KR102695746B1 - An electronic device including a display and an enhancing method of a distortion of an image displayed by the electronic device - Google Patents

Abstract

An electronic device is disclosed, comprising: a housing; a display which is visible through at least a portion of the housing and displays a screen using a plurality of pixels; a display driving circuit which provides a data voltage and a light-emitting signal for driving each of the plurality of pixels to the display; and a processor operatively connected to the display driving circuit and the sensor, wherein the processor sets one frame in which the display is driven and determines whether the display is displaying an execution screen of an application which operates at a first driving frequency or lower which is a designated driving frequency; and the display driving circuit sets a DA frame which provides the data voltage to a driving transistor of each of the plurality of pixels and a DH frame which maintains a data voltage value written in the address section, and controls a time for simultaneously supplying the light-emitting signal to a plurality of lines connected to the plurality of pixels in the DH frame. In addition to these, various embodiments are possible as can be understood from the specification.

Description

{An electronic device including a display and an enhancing method of a distortion of an image displayed by the electronic device}

Embodiments disclosed in this document relate to techniques for implementing an electronic device including a display and a method for improving distortion of an image displayed by the electronic device.

An electronic device can display an image through a display arranged on a surface of a housing. A plurality of pixels for displaying an image can be arranged on the display. The display can receive signals and voltages for displaying an image from a display driver IC (DDI). Each of the plurality of pixels can receive a data voltage corresponding to the brightness and color of an image to be displayed in a current frame from the display driver circuit. A driving transistor of a pixel is driven by the data voltage supplied in the current frame, so that a light-emitting element such as an organic light emitting diode (OLED) can emit light with a specified brightness. Specifically, the data voltage is supplied to a source electrode of the driving transistor, and the brightness of the light-emitting element driven by the driving transistor can be set by a voltage difference value between the source electrode of the driving transistor and the gate electrode of the driving transistor.

Meanwhile, the user may move at least a portion of the image displayed in the display area by using an input means such as a finger, a touch pen, and/or a stylus on the display area. For example, the user may scroll or flick a portion of the image to check a portion that was not visible in the display area before moving the image.

If the direction in which the scanning line is scanned and the direction in which the image is moved are different, a distortion phenomenon may occur due to the movement of the image, and the user may perceive the image distortion phenomenon. For example, if the scanning line is scanned from right to left and the image is moved from top to bottom, the right part of the image may be refreshed first, and the left part of the image may be refreshed later. Accordingly, a jelly phenomenon may occur in which the left part of the image ripples like waves, and the visibility of the image may be reduced.

Various embodiments disclosed in this document are intended to provide a method for reducing the jelly phenomenon of an image displayed on a display and an electronic device applying the method.

An electronic device according to one embodiment disclosed in the present document includes a housing, a display visible through at least a portion of the housing and displaying a screen using a plurality of pixels, a display driving circuit providing a data voltage and a light emitting signal for driving each of the plurality of pixels to the display, and a processor operatively connected to the display driving circuit and the sensor, wherein the processor sets one frame in which the display is driven and determines whether the display displays an execution screen of an application operating at a first driving frequency or lower, which is a designated driving frequency, and the display driving circuit is set to set a DA frame in which the data voltage is provided to a driving transistor of each of the plurality of pixels and a DH frame in which a data voltage value written in the address section is maintained, and control a time for simultaneously supplying the light emitting signal to a plurality of lines connected to the plurality of pixels in the DH frame.

In addition, an electronic device according to another embodiment disclosed in the present document includes a housing, a display that is visible through at least a portion of the housing and displays a screen using a plurality of pixels, a display driving circuit that provides a data voltage and a light-emitting signal for driving each of the plurality of pixels to the display, and a processor operatively connected to the display driving circuit and the sensor, wherein the processor sets one frame in which the display is driven and determines whether the display displays an execution screen of an application that operates at a first driving frequency or lower, which is a designated driving frequency, and the display driving circuit may be set to set a DA frame in which the data voltage is provided to a driving transistor of each of the plurality of pixels and a DH frame in which a data voltage value written in the address section is maintained, and the data voltage is written to the driving transistor throughout the DA frame, and the light-emitting signal may be simultaneously supplied to a plurality of lines connected to the plurality of pixels in the DH frame.

In addition, according to another embodiment disclosed in the present document, an electronic device includes a housing, a display visible through at least a portion of the housing and displaying a screen using a plurality of pixels, a display driving circuit providing a data voltage and a light-emitting signal for driving each of the plurality of pixels to the display, and a processor operatively connected to the display driving circuit and the sensor, wherein the processor sets one frame in which the display is driven and determines whether the display displays a still screen for a specified period of time, and the display driving circuit sets a DA frame in which the data voltage is provided to a driving transistor of each of the plurality of pixels and a DH frame in which a data voltage value written in the address section is maintained, and sets the DH frame to be repeated a plurality of times after the DA frame, and simultaneously supplies the light-emitting signal to a plurality of lines connected to the plurality of pixels in a GI section which is at least a portion of the DH frame.

According to the embodiments disclosed in this document, the leakage current characteristics of a pixel are improved so that a light-emitting signal can be supplied to a plurality of pixels simultaneously, thereby reducing the jelly phenomenon of an image displayed on a display.

In addition, according to the embodiments disclosed in this document, it is possible to reduce the jelly phenomenon of an image displayed on a display by simultaneously supplying a light emitting signal to a plurality of pixels in a holding period that maintains a data voltage value written in an address period.

In addition, according to the embodiments disclosed in this document, the driving frequency of the display can be reduced and power consumption can be reduced by increasing the time for simultaneously supplying a light-emitting signal to a plurality of pixels in a holding period.

In addition, various effects may be provided that are directly or indirectly identified through this document.

FIG. 1 is a drawing illustrating an unfolded state of an electronic device according to one embodiment.
FIG. 2 is a drawing illustrating a folded state of an electronic device according to one embodiment.
Figure 3 is an exploded perspective view of an electronic device according to one embodiment.
FIG. 4a is a drawing showing a display of an electronic device according to a comparative example.
FIG. 4b is a diagram illustrating a case of scrolling the display of an electronic device according to a comparative example.
FIG. 4c is a diagram illustrating a case of scrolling the display of an electronic device according to a comparative example.
FIG. 5 is a diagram illustrating a case of scrolling a display of an electronic device according to one embodiment.
FIG. 6 is a circuit diagram showing pixels of a display according to one embodiment.
FIG. 7 is a diagram illustrating a first DA/GI frame and a second DA/GI frame of a display of an electronic device according to one embodiment.
FIG. 8 is a diagram illustrating DA/GI frames and DH/GI frames of a display of an electronic device according to one embodiment.
FIG. 9 is a diagram illustrating a DA frame and a DH/GI frame of a display of an electronic device according to one embodiment.
FIG. 10 is a diagram illustrating a DA frame, a first DH frame, a second DH frame, and a third DH frame of a display of an electronic device according to one embodiment.
FIG. 11 is a diagram illustrating a DA frame, a first DH frame, a second DH frame, a third DH frame, and a fourth DH frame of a display of an electronic device according to one embodiment.
FIG. 12 is a block diagram of an electronic device within a network environment according to various embodiments.
FIG. 13 is a block diagram of a display device according to various embodiments.
In connection with the description of the drawings, the same or similar reference numerals may be used for identical or similar components.

Hereinafter, various embodiments of the present invention will be described with reference to the attached drawings. However, this is not intended to limit the present invention to specific embodiments, but should be understood to include various modifications, equivalents, and/or alternatives of the embodiments of the present invention.

FIG. 1 is a drawing illustrating an unfolded state of an electronic device according to one embodiment. FIG. 2 is a drawing illustrating a folded state of an electronic device according to one embodiment.

Referring to FIGS. 1 and 2, in one embodiment, the electronic device (10) may include a foldable housing (500), a hinge cover (530) covering a foldable portion of the foldable housing, and a flexible or foldable display (100) (hereinafter, simply referred to as “display” (100)) disposed within a space formed by the foldable housing (500). In this document, a surface on which the display (100) is disposed is defined as a first surface or the front surface of the electronic device (10). And, a surface opposite to the front surface is defined as a second surface or the back surface of the electronic device (10). In addition, a surface surrounding the space between the front surface and the back surface is defined as a third surface or the side surface of the electronic device (10).

In one embodiment, the foldable housing (500) may include a first housing structure (510), a second housing structure (520) including a sensor area (524), a first rear cover (580), and a second rear cover (590). The foldable housing (500) of the electronic device (10) is not limited to the shape and combination illustrated in FIGS. 1 and 2, and may be implemented by other shapes or combinations and/or combinations of parts. For example, in another embodiment, the first housing structure (510) and the first rear cover (580) may be formed integrally, and the second housing structure (520) and the second rear cover (590) may be formed integrally.

In the illustrated embodiment, the first housing structure (510) and the second housing structure (520) are arranged on both sides with respect to the folding axis (axis A) as the center, and may have an overall symmetrical shape with respect to the folding axis A. As described below, the angle or distance between the first housing structure (510) and the second housing structure (520) may vary depending on whether the state of the electronic device (10) is an unfolded state, a folded state, or an intermediate state. In the illustrated embodiment, the second housing structure (520), unlike the first housing structure (510), additionally includes a sensor area (524) in which various sensors are arranged, but may have a mutually symmetrical shape in other areas.

In one embodiment, as illustrated in FIG. 1, the first housing structure (510) and the second housing structure (520) may together form a recess for accommodating the display (100). In the illustrated embodiment, due to the sensor area (524), the recess may have two or more different widths in a direction perpendicular to the folding axis A.

For example, the recess may have (1) a first width (w1) between a first portion (510a) of the first housing structure (510) that is parallel to the folding axis A and a first portion (520a) formed at an edge of the sensor area (524) of the second housing structure (520), and (2) a second width (w2) formed by a second portion (510b) of the first housing structure (510) and a second portion (520b) of the second housing structure (520) that is parallel to the folding axis A and does not correspond to the sensor area (524). In this case, the second width (w2) may be formed longer than the first width (w1). In other words, the first part (510a) of the first housing structure (510) and the first part (520a) of the second housing structure (520) having mutually asymmetrical shapes may form a first width (w1) of the recess, and the second part (510b) of the first housing structure (510) and the second part (520b) of the second housing structure (520) having mutually symmetrical shapes may form a second width (w2) of the recess. In one embodiment, the first part (520a) and the second part (520b) of the second housing structure (520) may have different distances from the folding axis A. The width of the recess is not limited to the illustrated example. In various embodiments, the recess may have a plurality of widths due to the shape of the sensor area (524) or the asymmetrical shapes of the first housing structure (510) and the second housing structure (520).

In one embodiment, at least a portion of the first housing structure (510) and the second housing structure (520) may be formed of a metallic or non-metallic material having a rigidity selected to support the display (100).

In one embodiment, the sensor area (524) may be formed to have a predetermined area adjacent to one corner of the second housing structure (520). However, the arrangement, shape, and size of the sensor area (524) are not limited to the illustrated example. For example, in another embodiment, the sensor area (524) may be provided at another corner of the second housing structure (520) or any area between the upper corner and the lower corner. In one embodiment, components for performing various functions built into the electronic device (10) may be exposed to the front of the electronic device (10) through the sensor area (524) or through one or more openings provided in the sensor area (524). In various embodiments, the components may include various types of sensors. The sensor may include, for example, at least one of a front camera, a receiver, or a proximity sensor.

The first rear cover (580) is disposed on one side of the folding axis at the rear of the electronic device and may have, for example, a substantially rectangular periphery, and the periphery may be wrapped by the first housing structure (510). Similarly, the second rear cover (590) is disposed on the other side of the folding axis at the rear of the electronic device and may have its periphery wrapped by the second housing structure (520).

In the illustrated embodiment, the first rear cover (580) and the second rear cover (590) may have substantially symmetrical shapes with respect to the folding axis (A axis). However, the first rear cover (580) and the second rear cover (590) do not necessarily have mutually symmetrical shapes, and in other embodiments, the electronic device (10) may include the first rear cover (580) and the second rear cover (590) of various shapes. In another embodiment, the first rear cover (580) may be formed integrally with the first housing structure (510), and the second rear cover (590) may be formed integrally with the second housing structure (520).

In one embodiment, the first rear cover (580), the second rear cover (590), the first housing structure (510), and the second housing structure (520) may form a space in which various components of the electronic device (10) (e.g., a printed circuit board or a battery) may be placed. In one embodiment, one or more components may be placed or visually exposed on the rear surface of the electronic device (10). For example, at least a portion of the sub-display (190) may be visually exposed through the first rear area (582) of the first rear cover (580). In another embodiment, one or more components or sensors may be visually exposed through the second rear area (592) of the second rear cover (590). In various embodiments, the sensors may include a proximity sensor and/or a rear camera.

Referring to FIG. 2, the hinge cover (530) may be configured to be positioned between the first housing structure (510) and the second housing structure (520) so as to cover an internal component (e.g., the hinge structure). In one embodiment, the hinge cover (530) may be covered by a portion of the first housing structure (510) and the second housing structure (520) or exposed to the outside depending on the state of the electronic device (10) (flat state or folded state).

For example, as illustrated in FIG. 1, when the electronic device (10) is in an unfolded state, the hinge cover (530) may not be exposed because it is covered by the first housing structure (510) and the second housing structure (520). For example, as illustrated in FIG. 2, when the electronic device (10) is in a folded state (e.g., a fully folded state), the hinge cover (530) may be exposed to the outside between the first housing structure (510) and the second housing structure (520). For example, when the first housing structure (510) and the second housing structure (520) are in an intermediate state where they are folded with a certain angle, the hinge cover (530) may be partially exposed to the outside between the first housing structure (510) and the second housing structure (520). However, in this case, the exposed area may be less than that in the fully folded state. In one embodiment, the hinge cover (530) may include a curved surface.

The display (100) may be placed on a space formed by the foldable housing (500). For example, the display (100) may be placed on a recess formed by the foldable housing (500) and may constitute most of the front surface of the electronic device (10).

Accordingly, the front of the electronic device (10) may include a display (100), a portion of a first housing structure (510) adjacent to the display (100), and a portion of a second housing structure (520). And, the back of the electronic device (10) may include a first back cover (580), a portion of a first housing structure (510) adjacent to the first back cover (580), a second back cover (590), and a portion of a second housing structure (520) adjacent to the second back cover (590).

The above display (100) may refer to a display in which at least a portion of the display can be transformed into a flat or curved surface. In one embodiment, the display (100) may include a folding area (103), a first area (101) positioned on one side (the left side of the folding area (103) illustrated in FIG. 1) with respect to the folding area (103), and a second area (102) positioned on the other side (the right side of the folding area (103) illustrated in FIG. 1).

The division of regions of the display (100) illustrated in the above FIG. 1 is exemplary, and the display (100) may be divided into a plurality of regions (for example, four or more or two) depending on the structure or function. For example, in the embodiment illustrated in FIG. 1, the regions of the display (100) may be divided by a folding region (103) extending parallel to the y-axis or a folding axis (A-axis), but in other embodiments, the regions of the display (100) may be divided based on another folding region (for example, a folding region parallel to the x-axis) or another folding axis (for example, a folding axis parallel to the x-axis).

The first region (101) and the second region (102) may have an overall symmetrical shape centered on the folding region (103). However, unlike the first region (101), the second region (102) may include a cut notch depending on the presence of the sensor region (524), but may have a shape symmetrical to the first region (101) in other regions. In other words, the first region (101) and the second region (102) may include a portion having a symmetrical shape and a portion having an asymmetrical shape.

Hereinafter, the operations of the first housing structure (510) and the second housing structure (520) and each area of the display (100) according to the state of the electronic device (10) (e.g., flat state and folded state) will be described.

In one embodiment, when the electronic device (10) is in a flat state (e.g., FIG. 1), the first housing structure (510) and the second housing structure (520) may be arranged to face the same direction at an angle of 180 degrees. The surface of the first region (101) and the surface of the second region (102) of the display (100) may form an angle of 180 degrees with each other and face the same direction (e.g., toward the front of the electronic device). The folding region (103) may form the same plane as the first region (101) and the second region (102).

In one embodiment, when the electronic device (10) is in a folded state (e.g., FIG. 2), the first housing structure (510) and the second housing structure (520) may be arranged to face each other. The surface of the first region (101) and the surface of the second region (102) of the display (100) may form a narrow angle (e.g., between 0 and 10 degrees) with each other and face each other. The folding region (103) may be formed as a curved surface having at least a portion of a predetermined curvature.

In one embodiment, when the electronic device (10) is in an intermediate state (folded state) (e.g., FIG. 2), the first housing structure (510) and the second housing structure (520) may be arranged at a certain angle with respect to each other. The surface of the first region (101) and the surface of the second region (102) of the display (100) may form an angle that is larger than the folded state and smaller than the unfolded state. The folding region (103) may be formed as a curved surface having at least a certain curvature, and the curvature at this time may be smaller than that in the folded state.

Figure 3 is an exploded perspective view of an electronic device according to one embodiment.

Referring to FIG. 3, in one embodiment, the electronic device (10) may include a display unit (20), a bracket assembly (30), a substrate unit (600), a first housing structure (510), a second housing structure (520), a first rear cover (580), and a second rear cover (590). In this document, the display unit (20) may be referred to as a display module or a display assembly.

The above display unit (20) may include a display (100) and one or more plates or layers (140) on which the display (100) is mounted. In one embodiment, the plate (140) may be disposed between the display (100) and the bracket assembly (30). The display (100) may be disposed on at least a portion of one surface (e.g., an upper surface based on FIG. 3) of the plate (140). The plate (140) may be formed in a shape corresponding to the display (100). For example, a portion of the plate (140) may be formed in a shape corresponding to a notch (104) of the display (100).

The above bracket assembly (30) may include a first bracket (410), a second bracket (420), a hinge structure disposed between the first bracket (410) and the second bracket (420), a hinge cover (530) that covers the hinge structure when viewed from the outside, and a wiring member (430) (e.g., a flexible printed circuit (FPC)) that crosses the first bracket (410) and the second bracket (420).

In one embodiment, the bracket assembly (30) may be placed between the plate (140) and the substrate portion (600). For example, the first bracket (410) may be placed between the first area (101) of the display (100) and the first substrate (610). The second bracket (420) may be placed between the second area (102) of the display (100) and the second substrate (620).

In one embodiment, a wiring member (430) and at least a portion of a hinge structure (300) may be arranged inside the bracket assembly (30). The wiring member (430) may be arranged in a direction crossing the first bracket (410) and the second bracket (420) (e.g., in the x-axis direction). The wiring member (430) may be arranged in a direction perpendicular to a folding axis (e.g., the y-axis or the folding axis (A) of FIG. 1) of a folding area (103) of the electronic device (10) (e.g., in the x-axis direction).

The above substrate portion (600) may include a first substrate (610) disposed on the first bracket (410) side and a second substrate (620) disposed on the second bracket (420) side, as mentioned above. The first substrate (610) and the second substrate (620) may be disposed inside a space formed by the bracket assembly (30), the first housing structure (510), the second housing structure (520), the first rear cover (580), and the second rear cover (590). Components for implementing various functions of the electronic device (10) may be mounted on the first substrate (610) and the second substrate (620).

The first housing structure (510) and the second housing structure (520) can be assembled to each other so as to be coupled to both sides of the bracket assembly (30) while the display unit (20) is coupled to the bracket assembly (30). As described below, the first housing structure (510) and the second housing structure (520) can be coupled to the bracket assembly (30) by sliding on both sides of the bracket assembly (30).

In one embodiment, the first housing structure (510) may include a first rotational support surface (512), and the second housing structure (520) may include a second rotational support surface (522) corresponding to the first rotational support surface (512). The first rotational support surface (512) and the second rotational support surface (522) may include curved surfaces corresponding to curved surfaces included in the hinge cover (530).

In one embodiment, the first rotational support surface (512) and the second rotational support surface (522) may cover the hinge cover (530) so that the hinge cover (530) is not exposed or is minimally exposed to the rear surface of the electronic device (10) when the electronic device (10) is in an unfolded state (e.g., the electronic device of FIG. 1). Meanwhile, the first rotational support surface (512) and the second rotational support surface (522) may rotate along a curve included in the hinge cover (530) so that the hinge cover (530) is maximally exposed to the rear surface of the electronic device (10) when the electronic device (10) is in a folded state (e.g., the electronic device of FIG. 2).

FIG. 4a is a drawing showing a display (100) of an electronic device (10) according to a comparative example. The display (100) may include a first region (101), a second region (102), and a display driver circuit (110) (display driver IC, DDI).

In one embodiment, the first region (101) and the second region (102) can display an image (120). For example, the first region (101) and the second region (102) can display an execution screen of an application executed by the electronic device (10) as an image (120). Pixels may be arranged in the first region (101) and the second region (102) to display the image (120). Scan lines (115a, 115b, 115c, 115d, 115e) for driving the pixels may be arranged in the first region (101) and the second region (102). The scan lines (115a, 115b, 115c, 115d, 115e) may be arranged to cross the first region (101) and the second region (102) in the first direction (D1). In FIGS. 4A to 4C and FIG. 5, only five scan lines (115a, 115b, 115c, 115d, 115e) are illustrated due to limitations of the illustration. However, the present invention is not limited thereto, and the scan lines (115a, 115b, 115c, 115d, 115e) may be arranged as many times as the number of pixel rows formed by the pixels arranged in the first region (101) and the second region (102) in the first direction (D1).

In one embodiment, the display driving circuit (110) may be arranged so as not to overlap the first region (101) and the second region (102). The display driving circuit (110) may scan the scan lines (115a, 115b, 115c, 115d, 115e) in the first direction (D1). The display driving circuit (110) may supply scanning signals. The scanning signals may be supplied along the scan lines (115a, 115b, 115c, 115d, 115e) and supplied to pixels arranged in the first region (101) and the second region (102). The pixels supplied with the scanning signals may scan the data voltage of the current frame.

In one embodiment, the electronic device (10) may be a foldable electronic device (10) described in FIGS. 1 to 3. The foldable electronic device (10) may have an edge parallel to the first direction (D1) and an edge parallel to the second direction (D2) perpendicular to the first direction (D1) both having a length greater than a specified length. However, the present invention is not limited thereto, and the electronic device (10) may be a terminal in various forms, such as a tablet or a large-screen smart phone, having a display area greater than a specified width. The terminals in various forms may be terminals in which the scanning direction is set to one direction (e.g., the first direction (D1)) depending on the position of the display driving circuit (110), as in the example illustrated in FIG. 4a.

In one embodiment, a virtual boundary line (B) can be defined on a display (100) of an electronic device (10) to separate a first area (101) and a second area (102).

FIG. 4b is a drawing showing a case where the display (100) of an electronic device (10) is scrolled according to a comparative example.

In one embodiment, a user can move at least a portion of an image (121, 122) displayed in a first region (101) and a second region (102). The user can perform a touch input on the first region (101) and the second region (102) using a finger, a touch pen, and/or a stylus to move at least a portion of the image (121, 122). For example, the user can move the image (121, 122) displayed in the first region (101) and the second region (102) by scrolling or flicking in the second direction (D2), which is the illustrated scroll direction.

In one embodiment, the direction in which the scan lines (115a, 115b, 115c, 115d, 115e) are scanned and the direction in which the image (121, 122) is moved may be perpendicular to each other. The scan lines (115a, 115b, 115c, 115d, 115e) may be scanned in a first direction (D1) and the image (121, 122) may be scrolled in a second direction (D2). For example, when the electronic device (10) is used in the state illustrated in FIG. 4b, the user may scroll the image (121, 122) in the second direction (D2), which is an up-down direction. As another example, when the electronic device (10) is used by rotating it 90 degrees to the left or right in the state shown in FIG. 4b, the user can scroll the image (121, 122) in the first direction (D1), which is the left-right direction.

In one embodiment, when the direction in which scan lines (115a, 115b, 115c, 115d, 115e) are scanned and the direction in which images (121, 122) are moved are perpendicular to each other, a distortion phenomenon may occur due to the movement of images (121, 122). An address for sequentially writing data voltages to pixels may be performed in each of the scan lines (115a, 115b, 115c, 115d, 115e). In each of the scan lines (115a, 115b, 115c, 115d, 115e), pixels may sequentially emit light according to the data voltage.

In one embodiment, the images (121, 122) may include a first image (121) displayed in a first region (101) and a second image (122) displayed in a second region (102). When addresses and light are sequentially performed in each of the scan lines (115a, 115b, 115c, 115d, 115e), a deviation may occur between the time at which the first image (121) is displayed and the time at which the second image (122) is displayed. In this case, a difference may occur in the frames of the images displayed on both sides of the virtual boundary line (B) that separates the first region (101) and the second region (102). For example, when scanning of each of the scan lines (115a, 115b, 115c, 115d, 115e) progresses in a first direction (D1) from right to left and moves the image in a second direction (D2) from top to bottom or in an opposite direction of the second direction (D2) from bottom to top, the second image (122), which is the right part of the image (121, 122), may be updated first, and the first image (121), which is the left part of the image (121, 122), may be updated later. The first image (121) may be an image according to the data voltage supplied in the previous frame ((N-1)th Frame, where N is a natural number greater than or equal to 2). The second image (112) may be an image according to the data voltage supplied in the current frame (Nth Frame). When scrolling images (121, 122), a step (123) may occur due to a time difference between the first image (121) according to the data voltage supplied from the previous frame ((N-1)th Frame) and the second image (122) according to the data voltage supplied from the current frame (Nth Frame).

FIG. 4c is a drawing showing a case where the display (100) of an electronic device (10) is scrolled according to a comparative example.

In one embodiment, when the length from the portion where the display driving circuit (110) is arranged to the opposite edge is longer than a specified length, the user may perceive distortion of the image (124). The step (123) due to the time difference between the first image (121) displaying the image of the previous frame ((N-1)th Frame) and the second image (122) displaying the image of the current frame (Nth Frame) may accumulate in the user's eyes, causing a jelly scroll phenomenon in which the image (125) moving up and down is perceived as being diagonally tilted.

In one embodiment, when the first direction (D1), which is the scanning direction of the display driver circuit (DDI), and the second direction (D2), which is the scrolling direction, are different from each other, a jelly scroll phenomenon may occur due to a difference in the time for scanning the first area (101) and the second area (102). When the jelly scroll phenomenon occurs, the image (124) on the opposite side from the part where the display driver circuit (110) is arranged may ripple like waves. When the jelly scroll phenomenon occurs, the visibility of the image (124) may decrease. In the case of a portrait mode, such as a general smart phone, where the display driver circuit is arranged at a short edge, a jelly scroll issue may occur for scrolling the image when the display driver circuit (110) is located at the bottom and scrolls in the left and right directions. In addition, as illustrated in FIG. 4c, when the display driving circuit (110) is used in the landscape direction in a foldable electronic device (10) located on the right side, since the light emitting driver (EM Driver) emits light sequentially, when the screen is scrolled in the up and down directions, the first direction (D1), which is the scanning direction of the display driving circuit (110), and the second direction (D2), which is the scrolling direction, are vertical, so that a jelly scroll phenomenon may occur. With the advancement of technology for driving the display (100) in the display driving circuit (110), the display (100) can be driven by increasing the driving frequency up to 120 Hz, but it may not be easy to reduce the jelly scroll phenomenon itself even if the driving frequency is increased.

FIG. 5 is a drawing showing a case where a display (100) of an electronic device (10) is scrolled according to one embodiment.

In general, the display (100) can emit light while sequentially scanning the scan lines (115a, 115b, 115c, 115d, 115e). For example, after scanning the first scan line (115a), the display can emit light by a light-emitting signal supplied from a light-emitting driver. Thereafter, after scanning the second scan line (115b), the display can emit light by a light-emitting signal. When the display (100) emits light while sequentially scanning the scan lines (115a, 115b, 115c, 115d, 115e), a deviation in the time at which each of the scan lines (115a, 115b, 115c, 115d, 115e) emits light may occur.

In one embodiment, the display (100) can emit light simultaneously by a light emitting signal supplied from a light emitting driver after scanning of scan lines (115a, 115b, 115c, 115d, 115e) is completed. The supply of the scanning signal and the supply of the light emitting signal of the display driving circuit (110) can be processed separately. For example, after scanning the first scan line (115a), the second scan line (115b), the third scan line (115c), the fourth scan line (115d), and the fifth scan line (115e), light emitting signals can be supplied simultaneously to the scan lines (115a, 115b, 115c, 115d, 115e) so that the scan lines (115a, 115b, 115c, 115d, 115e) can be driven for global emission.

In one embodiment, when light is emitted simultaneously from each of the scan lines (115a, 115b, 115c, 115d, 115e), the time at which the image (125) is displayed in the first region (101) and the time at which the image (125) is displayed in the second region (102) may be substantially the same. Both the first region (101) and the second region (102) may display the image (125) according to the data voltage supplied in the current frame (Nth Frame). Since no step occurs in the image (125) displayed between the first region (101) and the second region (102), the jelly scroll phenomenon may be substantially reduced.

FIG. 6 is a circuit diagram (600) showing a pixel of a display (e.g., the display (100) of FIGS. 1 to 5) according to one embodiment. The pixel may include a light-emitting element (EL), a storage capacitor (Cst), and first to seventh transistors (T1, T2, T3, T4, T5, T6, T7).

In one embodiment, the light emitting element (EL) can emit light with a brightness set according to the gate voltage of the first transistor (T1), which is a driving transistor. The light emitting element (EL) can be an organic light emitting diode (OLED).

In one embodiment, the voltage of the gate electrode (G) of the first transistor (T1) can be kept constant by the storage capacitor (Cst). The first transistor (T1) can receive a data voltage (DATA) to the source electrode (S) under the control of the second transistor (T1). The first transistor (T1) can output a driving current for driving the light-emitting element (EL) to the drain electrode (D) according to the data voltage (DATA) and the voltage of the gate electrode (G). The first transistor (T1) can be a driving transistor of the pixel. For example, the first transistor (T1) can be a P-type (Positive type) MOSFET (Metal Oxide Semiconductor Field Effect Transistor).

In one embodiment, the second transistor (T2) can supply a data voltage to the first transistor (T1) based on the first scan signal (Scan1) in the current frame, which is the n-th frame (n is a natural number greater than or equal to 2). The second transistor (T2) can set an address section for writing the data voltage (DATA) to the first transistor (T1).

In one embodiment, the third transistor (T3) can maintain the gate voltage of the first transistor (T1) during the n-th frame based on the second scan signal (Scan2) in the n-th frame.

In one embodiment, the fourth transistor (T4) can initialize the data voltage (DATA) stored in the storage capacitor (Cst) in the n-th frame to the initialization voltage (Vinit) based on the second scan signal (Scan2) in the previous frame, i.e., the (n-1)th frame.

In one embodiment, the display (100) may apply Hybrid Oxide Poly-Si (HOP) technology. The third transistor (T3) and the fourth transistor (T4) may be oxide thin film transistors (Oxide TFTs) (610, 620). The leakage current of the oxide thin film transistors (610, 620) may be smaller than the leakage current of the polymer silicon thin film transistor (Poly-Si TFT). By changing the third transistor (T3) and the fourth transistor (T4) to oxide thin film transistors (610, 620), the third transistor (T3) and the fourth transistor (T4) may be driven separately using separate scan signals.

In one embodiment, the fifth transistor (T5) can supply a high-potential reference voltage (ELVDD) to the source electrode (S) of the first transistor (T1) based on the emission signal (EM) in the n-th frame. The sixth transistor (T6) can supply a driving current to the light-emitting element (EL) based on the emission signal (EM) in the n-th frame. The fifth transistor (T5) and the sixth transistor (T6) can set a holding section that maintains a data voltage (DATA) value written in an address section. In the holding section, the pixel maintains the data voltage (DATA) value in the previous frame without scanning and operates only by the emission signal (EM), so the holding section can be defined as a self-scan section.

In one embodiment, the seventh transistor (T7) can initialize the voltage applied to the gate electrode of the first transistor (T1), which is a driving transistor, to an initialization voltage (Vinit) based on the first scan signal (Scan1) in the next frame, which is the (n+1)-th frame.

In one embodiment, each of the plurality of pixels may receive a data voltage (DATA) corresponding to brightness and color to be displayed in a current frame from a display driving circuit (e.g., DDI (110) of FIG. 5). A first transistor (T1), which is a driving transistor of the pixel, may be driven by the data voltage (DATA) supplied in the current frame, which is the n-th frame, so that a light-emitting element (EL), such as an organic light-emitting diode, may emit light with a specified brightness. Specifically, the data voltage (DATA) is supplied to a source electrode (S) of the first transistor (T1), and the brightness of the light-emitting element (EL) driven by the first transistor (T1) may be set by a voltage difference value between the source electrode (S) of the first transistor (T1) and the gate electrode (G) of the first transistor (T1).

FIG. 7 is a drawing (700) showing a first DA/GI frame (710) and a second DA/GI frame (720) of a display (e.g., a display (100) of FIGS. 1 to 3, 5) of an electronic device (e.g., an electronic device (10) of FIGS. 1 to 3, 5) according to one embodiment. DA/GI frame may be an abbreviation defining Data Address (DA) and Global Illumination (GI).

In one embodiment, a processor (e.g., processor (1220) of FIG. 12) may set one frame that the display (100) drives. The one frame may include a first DA/GI frame (710) and a second DA/GI frame (720). For example, the first DA/GI frame (710) may belong to a current frame (e.g., the n-th frame of FIG. 6), and the second DA/GI frame (720) may belong to a next frame (e.g., the (n+1)-th frame of FIG. 6).

In one embodiment, the processor (1220) can determine whether the image displayed by the display (100) displays an execution screen of an application that operates at a first frequency or higher, which is a designated driving frequency. The processor (1220) can analyze the type of the application that is currently operating to determine the driving type of the image displayed by the display (100). For example, the processor (1220) can determine that the image displayed by the display (100) is a game application whose change amount over time is higher than a designated range.

In one embodiment, a display driving circuit (e.g., DDI (110) of FIG. 5) may set a first DA/GI frame (710) and a second DA/GI frame (720) to provide a data voltage (e.g., data voltage (DATA) of FIG. 6) to each of a plurality of pixels' driving transistors (e.g., first transistor (T1) of FIG. 6). The display driving circuit (110) may set the first DA/GI frame (710) and the second DA/GI frame (720) to write a new data voltage (DATA) for each frame when the display (100) displays an execution screen of an application operating at a first frequency or higher.

In one embodiment, the display driving circuit (110) may divide the first DA/GI frame (710) into a first DA section (711) and a first DH/GI section (712), and may divide the second DA/GI frame (720) into a second DA section (721) and a second DH/GI section (722). The first DA section (711) and the second DA section (721) may be sections in which data voltages (DATA) are written to pixels connected to the plurality of scan lines (115a, 115b, 115c, 115d, 115e) while sequentially changing scanning signals (n1, n2, n3, n4, ..., n1803, n1804) supplied to each of the plurality of scan lines (e.g., scan lines (115a, 115b, 115c, 115d, 115e) of FIG. 5) to a High state. The first DH/GI section (712) and the second DH/GI section (722) may be sections in which light emission signals (e.g., light emission signals (EM) of FIG. 6) are simultaneously supplied to pixels arranged on the display (100) while maintaining the written data voltage (DATA) to cause the pixels to light up.

In one embodiment, the display driving circuit (110) can perform global illumination (GI) driving that simultaneously supplies an emission signal (EM) to pixels arranged in the display (100) in the first DH/GI section (712) and the second DH/GI section (722), which are at least a portion of the first DA/GI frame (710) and the second DA/GI frame (720). The display driving circuit (110) can be driven at a driving frequency of about 120 Hz, which is a higher driving frequency than a general driving frequency, in order to perform global illumination driving that simultaneously supplies EM signals to the pixels. When the display driving circuit (110) applies global illumination driving, the jelly scroll phenomenon can be improved.

In one embodiment, the first DH/GI period (712) and the second DH/GI period (722) to which the display driving circuit (110) supplies the EM signal may be correlated with the first DA period (711) and the second DA period (721) to which the display driving circuit (110) addresses the data voltage (DATA). For example, the first DH/GI period (712) and the second DH/GI period (722) to which the display driving circuit (110) supplies the EM signal may be periods excluding the first DA period (711) and the second DA period (721) to which the display driving circuit (110) addresses the data voltage (DATA).

In one embodiment, the length of the first GI period (712) and the second GI period (722) for which the display driving circuit (110) supplies the EM signal may be limited. The luminance of the display (100) perceived by a human may match the sum of the total amount of light emitted by the display (100) during one frame. If the length of the first GI period (712) and the second GI period (722) for which the EM signal is supplied is limited, the luminance of the display (100) may be maintained only if the base luminance increases. If the base luminance increases, the driving voltage may increase and the power consumption may increase. If the power consumption is maintained, the luminance of the display (100) may be restricted.

In one embodiment, the display driving circuit (110) may supply EM signals to pixels simultaneously in at least a portion of the first DH/GI period (712) and the second DH/GI period (722) of the first DA/GI frame (710) and the second DA/GI frame (720), when the display (100) displays an execution screen of an application that operates at a first frequency or higher, which is a designated driving frequency, in the processor (1220). The display driving circuit (110) may perform global light emission driving when using a game application or a head mount display (HMD) that requires rapid reduction in latency.

FIG. 8 is a drawing (800) showing a DA/GI frame (810) and a DH/GI frame (820) of a display (e.g., a display (100) of FIGS. 1 to 3, 5) of an electronic device (e.g., an electronic device (10) of FIGS. 1 to 3, 5) according to one embodiment. The DA/GI frame (810) may be a data address and global driving frame. The DH/GI frame may be a data holding (DH) and global driving frame that maintains a written data voltage.

In one embodiment, a processor (e.g., processor (1220) of FIG. 12) can set one frame that the display (100) drives. The one frame can be a DA/GI frame (810) and/or a DH/GI frame (820). For example, the DA/GI frame (810) can belong to a current frame (e.g., the n-th frame of FIG. 6) and the DH/GI frame (820) can belong to a next frame (e.g., the (n+1)-th frame of FIG. 6).

In one embodiment, the processor (1220) can determine whether the image displayed by the display (100) displays an execution screen of an application that operates at a first frequency or lower, which is a designated driving frequency. The processor (1220) can analyze the type of the application that is currently operating to determine the driving type of the image displayed by the display (100). For example, the processor (1220) can determine that the image displayed by the display (100) is a general UI or web browser environment in which the amount of change over time is lower than a designated range.

In one embodiment, the display driving circuit (110) may set a DA/GI frame (810) that provides a data voltage (e.g., the data voltage (DATA) of FIG. 6) to each of a plurality of pixels' driving transistors (e.g., the first transistor (T1) of FIG. 6) and a DH/GI frame (820) that maintains the data voltage (DATA) value written in the DA/GI frame (810). The DA/GI frame (810) may be a section that supplies or writes a data voltage (DATA) or a pixel voltage corresponding to an image to be actually displayed in a current frame (the n-th frame) to a gate node of the driving transistor (T1). The DH/GI frame (820) may be a section that does not supply the data voltage (DATA) to the gate node of the driving transistor (T1) and maintains the data voltage (DATA) value of a current frame (the n-th frame), which is a previous frame, based on the DH/GI frame (820). In the DA/GI frame (820), the scan driver of the display driving circuit (110) does not operate, and the EM driver can operate normally.

In one embodiment, the display driving circuit (110) may divide the DA/GI frame (810) into a DA period (811) and a first GI period (812), and may divide the DH/GI frame (820) into a DH period (821) and a second GI period (822). The DA period (811) may be a period in which data voltages (DATA) are written to pixels connected to the plurality of scan lines (115a, 115b, 115c, 115d, 115e) while sequentially changing scanning signals (n1, n2, n3, n4, ..., n1803, n1804) supplied to each of the plurality of scan lines (e.g., the scan lines (115a, 115b, 115c, 115d, 115e) of FIG. 5) to a high state. The first GI section (812) and the GI section (822) may be sections that simultaneously supply a light emitting signal (e.g., the light emitting signal (EM) of FIG. 6) to pixels arranged in the display (100) to cause the pixels to light up.

In one embodiment, the display driving circuit (110) may be set to control the time for simultaneously supplying the emission signal (EM) to a plurality of lines (e.g., lines supplying the emission signal (EM) of FIG. 6) connected to a plurality of pixels in the DH section (821). The display driving circuit (110) may simultaneously supply the emission signal (e.g., the emission signal (EM) of FIG. 6) to the pixels arranged in the display (100) in at least a portion of the DH section (821) to cause the pixels to emit light. For example, the display driving circuit (110) may simultaneously supply the emission signal (EM) to the pixels arranged in the display (100) in a portion of the DH section (821) before the start of the second GI section (822). As another example, the display driving circuit (110) can simultaneously supply a light emitting signal (EM) to pixels arranged in the display (100) during the entire period except for the period when the synchronization signal (TE) is in a high state during the DH period (821).

In one embodiment, a display (100) using a hybrid oxide poly-silicon structure can maintain a voltage value of a gate node of a driving transistor (T1) when a data voltage (DATA) is not separately addressed to each of a plurality of data lines (DATA lines) in a DH/GI frame (820). The display driving circuit (110) can have a DH/GI frame (820) that maintains the voltage value of the gate node of the driving transistor (T1) without addressing the data voltage (DATA). For example, the display driving circuit (110) can set the DA/GI frame (810) and the DH/GI frame (820) to be alternately repeated in a general UI or web browser environment where fast latency compensation is not required. The display driving circuit (110) can control the width of a section in which an emission signal (EM) is simultaneously supplied to a plurality of pixels in the DH/GI frame (820).

In one embodiment, the display driving circuit (110) can control the base brightness of the display (100) based on the width of the section in which the emission signal (EM) is simultaneously supplied to the plurality of pixels. If the width of the section in which the emission signal (EM) is simultaneously supplied to the plurality of pixels is increased, the total time for which the image displayed by the display (100) is exposed to the user's field of vision during one frame can increase. If the time for which the image displayed by the display (100) is exposed increases, even if the base brightness of the display (100) is reduced, the user can perceive that the same brightness is displayed. If the base brightness of the display (100) is reduced, the gap, which is a difference value between the driving voltages (e.g., ELVDD and ELVSS of FIG. 6), can be reduced, thereby reducing power consumption.

In one embodiment, when the DA/GI frame (810) and the DH/GI frame (820) are alternately repeated, the driving frequency actually perceived by the user may be reduced by half compared to the driving frequency set by the processor (1120). For example, when the processor (1220) is driven at a driving frequency of 120 Hz and supplies 120 frames per second, the driving frequency perceived by the user may be 60 Hz since the DA/GI frame (810) and the DH/GI frame (820) are alternately repeated 60 times. However, since the emission signal (EM) is simultaneously supplied to a plurality of pixels in the DH/GI frame (820), the jelly scroll phenomenon may not occur.

FIG. 9 is a drawing (900) showing a DA frame (910) and a DH/GI frame (920) of a display (e.g., a display (100) of FIGS. 1 to 3, 5) of an electronic device (e.g., an electronic device (10) of FIGS. 1 to 3, 5) according to one embodiment. The DH/GI frame may be a data holding and global driving frame.

In one embodiment, a display driving circuit (e.g., a display driving circuit (110) of FIG. 5) may write a data voltage (e.g., a data voltage (DATA) of FIG. 6) to a driving transistor (e.g., a first transistor (T1) of FIG. 6) throughout a DA frame (910). The display driving circuit (110) may sequentially change scanning signals (n1, n2, n3, n4, ..., n1803, n1804) supplied to each of a plurality of scan lines (e.g., scan lines (115a, 115b, 115c, 115d, 115e) of FIG. 5) to a high state throughout an address section (910) while writing data voltages (DATA) to pixels connected to the plurality of scan lines (115a, 115b, 115c, 115d, 115e).

In one embodiment, the display driving circuit (110) may be set to simultaneously supply a light emitting signal (e.g., the light emitting signal (EM) of FIG. 6) to a plurality of lines (e.g., the lines supplying the light emitting signal (EM) of FIG. 6) connected to a plurality of pixels in a DH/GI frame (920). The display driving circuit (110) may be set to simultaneously supply the light emitting signal (EM) to a plurality of pixels arranged in the display (100) throughout the DH/GI frame (920).

In one embodiment, when writing a data voltage (DATA) in an address section (910), the time for writing the data voltage (DATA) may decrease as the driving frequency in the processor (120) increases. The display driving circuit (110) may separate the light-emitting section in the DA frame (910) so that the light-emitting signal (EM) is not supplied in the address section (910). The display driving circuit (110) may secure the time for writing the data voltage (DATA) in the DA frame (910) to the maximum extent. The display driving circuit (110) may secure the time for pixels arranged in the display (100) to simultaneously light by supplying the light-emitting signal (EM) as a whole in the DH/GI frame (920).

FIG. 10 is a drawing (1000) showing a DA frame (1010), a first DH frame (1020), a second DH frame (1030), and a third DH frame (1040) of a display (e.g., a display (100) of FIGS. 1 to 3, 5) of an electronic device (e.g., an electronic device (10) of FIGS. 1 to 3, 5) according to one embodiment. The DA frame may be a data address frame. The DH frame may be a data holding frame.

In one embodiment, a processor (e.g., processor (1220) of FIG. 12) can determine whether the display (100) displays a still screen for a specified period of time. The processor (1220) can determine whether an image displayed by the display (100) changes. The processor (1220) can determine whether a data voltage (e.g., data voltage (DATA) of FIG. 6) supplied from a display driving circuit (e.g., display driving circuit (110) of FIG. 5) to the display (100) remains substantially the same for a specified period of time.

In one embodiment, the display driving circuit (110) may be set such that a DH frame (1020, 1030, 1040) is repeated multiple times after a DA frame (1010). The display driving circuit (110) may be set such that a plurality of DH frames (1020, 1030, 1040) are repeated while a plurality of frames elapse after writing a data voltage (DATA) in one frame when displaying a screen that has been still for a specified period of time. For example, the display driving circuit (110) may set the DA frame (1010) and the DH frames (1020, 1030, 1040) such that the first DH frame (1020), the second DH frame (1030), and the third DH frame (1040) are repeated for three consecutive frames after one DA frame (1010).

In one embodiment, the display driving circuit (110) may be configured to simultaneously supply a light emitting signal (e.g., the light emitting signal (EM) of FIG. 6) to a plurality of lines connected to a plurality of pixels (e.g., lines supplying the light emitting signal (EM) of FIG. 6) during at least a portion of a DA frame (1010). The display driving circuit (110) sequentially changes scanning signals (n1, n2, n3, n4, ... n1803, n1804) supplied to each of a plurality of scan lines (e.g., scan lines (115a, 115b, 115c, 115d, 115e) of FIG. 5) to a high state, and can simultaneously supply a data voltage (DATA) to pixels connected to the plurality of scan lines (115a, 115b, 115c, 115d, 115e) and an emission signal (EM) to the plurality of pixels in the first GI section (1012) after the DA section (1011) ends.

In one embodiment, the display driving circuit (110) may be configured to simultaneously supply an emission signal (EM) to a plurality of lines connected to a plurality of pixels in at least a portion of a second GI period (1022), a third GI period (1032), and a fourth GI period (1042) of a first DH frame (1020), a second DH frame (1030), and a third DH frame (1040). The display driving circuit (110) may divide the first DH frame (1020) into a first DH period (1021) and a second GI period (1022). The display driving circuit (110) may divide the second DH frame (1030) into a second DH period (1031) and a third GI period (1032). The display driving circuit (110) can divide the third DH frame (1040) into a third DH section (1041) and a fourth GI section (1042). The display driving circuit (110) can stand by without supplying a light emission signal (EM) in the first DH section (1021), the second DH section (1031), and the third DH section (1041). The display driving circuit (110) can supply a light emission signal (EM) to a plurality of pixels simultaneously in the second GI section (1022), the third GI section (1032), and the fourth GI section (1042).

FIG. 11 is a drawing (1100) showing a DA frame (1110), a first DH frame (1120), a second DH frame (1130), a third DH frame (1140), and a fourth DH frame (1150) of a display (e.g., a display (100) of FIGS. 1 to 3 and 5) of an electronic device (e.g., an electronic device (10) of FIGS. 1 to 3 and 5) according to one embodiment.

In one embodiment, a processor (e.g., processor (1220) of FIG. 12) may determine whether the display (100) is displaying a still screen for a specified period of time.

In one embodiment, the display driving circuit (e.g., the display driving circuit (110) of FIG. 5) may set the DH frames (1120, 1130, 1140, 1150) to be repeated multiple times after the DA frame (1110). For example, the display driving circuit (110) may set the DA frame (1110) and the DH frames (1120, 1130, 1140, 1150) to be repeated for four consecutive frames after one DA frame (1110).

In one embodiment, the display driving circuit (110) may be set to simultaneously supply a light emitting signal (e.g., the light emitting signal (EM) of FIG. 6) to a plurality of lines connected to a plurality of pixels (e.g., lines supplying the light emitting signal (EM) of FIG. 6) in a first GI section (1112), which is at least a portion of a DA frame (1110). The display driving circuit (110) sequentially changes scanning signals (n1, n2, n3, n4, ... n1803, n1804) supplied to each of a plurality of scan lines (e.g., scan lines (115a, 115b, 115c, 115d, 115e) of FIG. 5) to a high state, and can simultaneously supply an emission signal (EM) to a plurality of pixels in a first GI period (1112), which is a period after the end of the DA period (1111), in which data voltages (DATA) are written to pixels connected to the plurality of scan lines (115a, 115b, 115c, 115d, 115e).

In one embodiment, the display driving circuit (110) may be configured to simultaneously supply a light emitting signal (e.g., the light emitting signal (EM) of FIG. 6) to a plurality of lines connected to a plurality of pixels (e.g., lines supplying the light emitting signal (EM) of FIG. 6) in at least a portion of the second GI period (1122), the third GI period (1132), the fourth GI period (1142), and the fifth GI period (1152) of the first DH frame (1120), the second DH frame (1130), the third DH frame (1140), and the fourth DH frame (1150). For example, the display driving circuit (110) can supply an emission signal (EM) to a plurality of pixels simultaneously in the second GI period (1122), the third GI period (1132), the fourth GI period (1142), and the fifth GI period (1152), excluding the synchronization periods (1121, 1131, 1141, 1151) in which the synchronization signal (TE) is in a high state among the first DH frame (1120), the second DH frame (1130), the third DH frame (1140), and the fourth DH frame (1150).

In one embodiment, the display driving circuit (110) can display a still image on the display (100) using only the emission signal (EM). The display driving circuit (110) can process the still image to be displayed on the display (100) using only the emission signal (EM) in the first DH frame (1120), the second DH frame (1130), the third DH frame (1140), and the fourth DH frame (1150). In the case of a still image, unlike a movement or touch event, since the data voltage (DATA) is maintained constant for a specified time elapses, the scan driver of the display driving circuit (110) does not need to operate. The display driving circuit (110) can significantly reduce the driving frequency perceived by the user compared to the driving frequency set by the processor (1220) by setting the DH frames (1120, 1130, 1140, 1150) to be repeated multiple times after the DA frame (1110). The display driving circuit (110) can reduce power consumption by reducing the driving frequency perceived by the user.

FIG. 12 is a block diagram of an electronic device (1201) in a network environment (1200) according to various embodiments. Referring to FIG. 12, in the network environment (1200), the electronic device (1201) may communicate with the electronic device (1202) through a first network (1298) (e.g., a short-range wireless communication network), or may communicate with the electronic device (1204) or the server (1208) through a second network (1299) (e.g., a long-range wireless communication network). According to one embodiment, the electronic device (1201) may communicate with the electronic device (1204) through the server (1208). According to one embodiment, the electronic device (1201) may include a processor (1220), a memory (1230), an input device (1250), an audio output device (1255), a display device (1260), an audio module (1270), a sensor module (1276), an interface (1277), a haptic module (1279), a camera module (1280), a power management module (1288), a battery (1289), a communication module (1290), a subscriber identification module (1296), or an antenna module (1297). In some embodiments, the electronic device (1201) may omit at least one of these components (e.g., the display device (1260) or the camera module (1280)), or may have one or more other components added. In some embodiments, some of these components may be implemented as a single integrated circuit. For example, a sensor module (1276) (e.g., a fingerprint sensor, an iris sensor, or an ambient light sensor) may be implemented embedded in a display device (1260) (e.g., a display).

The processor (1220) may control at least one other component (e.g., a hardware or software component) of the electronic device (1201) connected to the processor (1220) by executing, for example, software (e.g., a program (1240)), and may perform various data processing or calculations. According to one embodiment, as at least a part of the data processing or calculations, the processor (1220) may load a command or data received from another component (e.g., a sensor module (1276) or a communication module (1290)) into the volatile memory (1232), process the command or data stored in the volatile memory (1232), and store the resulting data in the nonvolatile memory (1234). According to one embodiment, the processor (1220) may include a main processor (1221) (e.g., a central processing unit or an application processor) and a secondary processor (1223) (e.g., a graphics processing unit, an image signal processor, a sensor hub processor, or a communication processor) that may operate independently or together with the main processor (1221). Additionally or alternatively, the secondary processor (1223) may be configured to use less power than the main processor (1221) or to be specialized for a given function. The secondary processor (1223) may be implemented separately from the main processor (1221) or as a part thereof.

The auxiliary processor (1223) may control at least a portion of functions or states associated with at least one of the components of the electronic device (1201) (e.g., the display device (1260), the sensor module (1276), or the communication module (1290)), for example, on behalf of the main processor (1221) while the main processor (1221) is in an inactive (e.g., sleep) state, or together with the main processor (1221) while the main processor (1221) is in an active (e.g., application execution) state. In one embodiment, the auxiliary processor (1223) (e.g., an image signal processor or a communication processor) may be implemented as a part of another functionally related component (e.g., a camera module (1280) or a communication module (1290)).

The memory (1230) can store various data used by at least one component (e.g., processor (1220) or sensor module (1276)) of the electronic device (1201). The data can include, for example, software (e.g., program (1240)) and input data or output data for commands related thereto. The memory (1230) can include volatile memory (1232) or nonvolatile memory (1234).

The program (1240) may be stored as software in memory (1230) and may include, for example, an operating system (1242), middleware (1244), or an application (1246).

The input device (1250) can receive commands or data to be used in a component of the electronic device (1201) (e.g., a processor (1220)) from an external source (e.g., a user) of the electronic device (1201). The input device (1250) can include, for example, a microphone, a mouse, a keyboard, or a digital pen (e.g., a stylus pen).

The audio output device (1255) can output an audio signal to the outside of the electronic device (1201). The audio output device (1255) can include, for example, a speaker or a receiver. The speaker can be used for general purposes such as multimedia playback or recording playback, and the receiver can be used to receive an incoming call. According to one embodiment, the receiver can be implemented separately from the speaker or as a part thereof.

The display device (1260) can visually provide information to an external party (e.g., a user) of the electronic device (1201). The display device (1260) can include, for example, a display, a holographic device, or a projector and a control circuit for controlling the device. According to one embodiment, the display device (1260) can include touch circuitry configured to detect a touch, or a sensor circuitry configured to measure a strength of a force generated by the touch (e.g., a pressure sensor).

The audio module (1270) can convert sound into an electrical signal, or vice versa, convert an electrical signal into sound. According to one embodiment, the audio module (1270) can obtain sound through an input device (1250), or output sound through an audio output device (1255), or an external electronic device (e.g., an electronic device (1202)) (e.g., a speaker or a headphone) directly or wirelessly connected to the electronic device (1201).

The sensor module (1276) can detect an operating state (e.g., power or temperature) of the electronic device (1201) or an external environmental state (e.g., user state) and generate an electrical signal or data value corresponding to the detected state. According to one embodiment, the sensor module (1276) can include, for example, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

The interface (1277) may support one or more designated protocols that may be used to directly or wirelessly connect the electronic device (1201) with an external electronic device (e.g., the electronic device (1202)). In one embodiment, the interface (1277) may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

The connection terminal (1278) may include a connector through which the electronic device (1201) may be physically connected to an external electronic device (e.g., the electronic device (1202)). According to one embodiment, the connection terminal (1278) may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).

The haptic module (1279) can convert an electrical signal into a mechanical stimulus (e.g., vibration or movement) or an electrical stimulus that a user can perceive through a tactile or kinesthetic sense. According to one embodiment, the haptic module (1279) can include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

The camera module (1280) can capture still images and moving images. According to one embodiment, the camera module (1280) can include one or more lenses, image sensors, image signal processors, or flashes.

The power management module (1288) can manage power supplied to the electronic device (1201). According to one embodiment, the power management module (1288) can be implemented as, for example, at least a part of a power management integrated circuit (PMIC).

The battery (1289) can power at least one component of the electronic device (1201). In one embodiment, the battery (1289) can include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

The communication module (1290) may support establishment of a direct (e.g., wired) communication channel or a wireless communication channel between the electronic device (1201) and an external electronic device (e.g., the electronic device (1202), the electronic device (1204), or the server (1208)), and performance of communication through the established communication channel. The communication module (1290) may operate independently from the processor (1220) (e.g., the application processor) and may include one or more communication processors that support direct (e.g., wired) communication or wireless communication. According to one embodiment, the communication module (1290) may include a wireless communication module (1292) (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module (1294) (e.g., a local area network (LAN) communication module or a power line communication module). A corresponding communication module among these communication modules can communicate with an external electronic device (1204) via a first network (1298) (e.g., a short-range communication network such as Bluetooth, WiFi direct, or infrared data association (IrDA)) or a second network (1299) (e.g., a long-range communication network such as a cellular network, the Internet, or a computer network (e.g., a LAN or WAN)). These various types of communication modules can be integrated into a single component (e.g., a single chip) or implemented as multiple separate components (e.g., multiple chips). The wireless communication module (1292) can identify and authenticate the electronic device (1201) within a communication network, such as the first network (1298) or the second network (1299), by using subscriber information (e.g., an international mobile subscriber identity (IMSI)) stored in the subscriber identification module (1296).

The antenna module (1297) can transmit or receive signals or power to or from an external device (e.g., an external electronic device). According to one embodiment, the antenna module (1297) can include one antenna including a radiator formed of a conductor or a conductive pattern formed on a substrate (e.g., a PCB). According to one embodiment, the antenna module (1297) can include a plurality of antennas. In this case, at least one antenna suitable for a communication method used in a communication network, such as the first network (1298) or the second network (1299), can be selected from the plurality of antennas by, for example, the communication module (1290). A signal or power can be transmitted or received between the communication module (1290) and the external electronic device through the selected at least one antenna. According to some embodiments, in addition to the radiator, another component (e.g., an RFIC) can be additionally formed as a part of the antenna module (1297).

At least some of the above components may be connected to each other and exchange signals (e.g., commands or data) with each other via a communication method between peripheral devices (e.g., a bus, a general purpose input and output (GPIO), a serial peripheral interface (SPI), or a mobile industry processor interface (MIPI)).

In one embodiment, commands or data may be transmitted or received between the electronic device (1201) and an external electronic device (1204) via a server (1208) connected to a second network (1299). Each of the external electronic devices (1202, 1204) may be the same or a different type of device as the electronic device (1201). In one embodiment, all or part of the operations executed in the electronic device (1201) may be executed in one or more of the external electronic devices (1202, 1204, or 1208). For example, when the electronic device (1201) is to perform a certain function or service automatically or in response to a request from a user or another device, the electronic device (1201) may, instead of or in addition to executing the function or service itself, request one or more external electronic devices to perform at least a part of the function or service. One or more external electronic devices that have received the request may execute at least a part of the requested function or service, or an additional function or service related to the request, and transmit the result of the execution to the electronic device (1201). The electronic device (1201) may process the result as is or additionally and provide it as at least a part of a response to the request. For this purpose, for example, cloud computing, distributed computing, or client-server computing technology may be used.

FIG. 13 is a block diagram (1300) of a display device (1260) according to various embodiments. Referring to FIG. 13, the display device (1260) may include a display (1310) and a display driver IC (DDI) (1330) for controlling the display (1310). The DDI (1330) may include an interface module (1331), a memory (1333) (e.g., a buffer memory), an image processing module (1335), or a mapping module (1337). The DDI (1330) may receive image information including, for example, image data or an image control signal corresponding to a command for controlling the image data, from another component of the electronic device 1201 through the interface module (1331). For example, according to one embodiment, image information may be received from a processor (1220) (e.g., a main processor (1221) (e.g., an application processor) or an auxiliary processor (1223) (e.g., a graphics processing unit) that operates independently of the function of the main processor (1221). The DDI (1330) may communicate with a touch circuit (1350) or a sensor module (1276) through the interface module (1331). In addition, the DDI (1330) may store at least some of the received image information in the memory (1333), for example, in units of frames. The image processing module (1335) may perform preprocessing or postprocessing (e.g., resolution, brightness, or size adjustment) on at least some of the image data based on at least the characteristics of the image data or the characteristics of the display (1310), for example. The mapping module (1337) may output a voltage value or a value corresponding to the image data preprocessed or postprocessed through the image processing module (1235). A current value can be generated. According to one embodiment, the generation of the voltage value or current value can be performed at least in part based on, for example, properties of pixels of the display (1310) (e.g., an arrangement of pixels (RGB stripe or pentile structure), or a size of each sub-pixel). At least some pixels of the display (1310) can be driven at least in part based on, for example, the voltage value or current value, so that visual information (e.g., text, an image, or an icon) corresponding to the image data can be displayed through the display (1310).

According to one embodiment, the display device (1260) may further include a touch circuit (1350). The touch circuit (1350) may include a touch sensor (1351) and a touch sensor IC (1353) for controlling the same. The touch sensor IC (1353) may control the touch sensor (1351) to detect, for example, a touch input or a hovering input for a specific location of the display (1310). For example, the touch sensor IC (1353) may detect the touch input or the hovering input by measuring a change in a signal (e.g., voltage, light amount, resistance, or charge amount) for a specific location of the display (1310). The touch sensor IC (1353) may provide information (e.g., location, area, pressure, or time) about the detected touch input or hovering input to the processor (1220). According to one embodiment, at least a portion of the touch circuit (1350) (e.g., the touch sensor IC (1353)) may be included as part of the display driver IC (1330), or as part of the display (1310), or as part of another component (e.g., the auxiliary processor (1223)) disposed external to the display device (1260).

According to one embodiment, the display device (1260) may further include at least one sensor (e.g., a fingerprint sensor, an iris sensor, a pressure sensor, or an illuminance sensor) of the sensor module (1276), or a control circuit therefor. In this case, the at least one sensor or the control circuit therefor may be embedded in a part of the display device (1260) (e.g., the display (1310) or the DDI (1330)) or a part of the touch circuit (1350). For example, when the sensor module (1276) embedded in the display device (1260) includes a biometric sensor (e.g., a fingerprint sensor), the biometric sensor may obtain biometric information (e.g., a fingerprint image) associated with a touch input through a part of the display (1310). For another example, when the sensor module (1276) embedded in the display device (1260) includes a pressure sensor, the pressure sensor may obtain pressure information associated with a touch input through a part or the entire area of the display (1310). According to one embodiment, the touch sensor (1351) or the sensor module (1276) may be disposed between pixels of a pixel layer of the display (1310), or above or below the pixel layer.

The electronic devices according to various embodiments disclosed in this document may be devices of various forms. The electronic devices may include, for example, portable communication devices (e.g., smartphones), computer devices, portable multimedia devices, portable medical devices, cameras, wearable devices, or home appliance devices. The electronic devices according to embodiments of this document are not limited to the above-described devices.

It should be understood that the various embodiments of this document and the terminology used herein are not intended to limit the technical features described in this document to specific embodiments, but rather to encompass various modifications, equivalents, or substitutes of the embodiments. In connection with the description of the drawings, similar reference numerals may be used for similar or related components. The singular form of a noun corresponding to an item may include one or more of the items, unless the context clearly dictates otherwise. In this document, each of the phrases "A or B", "at least one of A and B", "at least one of A or B", "A, B, or C", "at least one of A, B, and C" and "at least one of A, B, or C" can include any one of the items listed together in the corresponding phrase, or all possible combinations thereof. Terms such as "first", "second", or "first" or "second" may be used merely to distinguish one component from another, and do not limit the components in any other respect (e.g., importance or order). When a component (e.g., a first) is referred to as "coupled" or "connected" to another (e.g., a second) component, with or without the terms "functionally" or "communicatively," it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

The term "module" as used in this document may include a unit implemented in hardware, software or firmware, and may be used interchangeably with terms such as logic, logic block, component, or circuit, for example. A module may be an integrally configured component or a minimum unit of the component or a portion thereof that performs one or more functions. For example, according to one embodiment, a module may be implemented in the form of an application-specific integrated circuit (ASIC).

Various embodiments of the present document may be implemented as software (e.g., a program (1240)) including one or more instructions stored in a storage medium (e.g., an internal memory (1236) or an external memory (1238)) readable by a machine (e.g., an electronic device (1201)). For example, a processor (e.g., a processor (1220)) of the machine (e.g., an electronic device (1201)) may call at least one instruction among the one or more instructions stored from the storage medium and execute it. This enables the machine to operate to perform at least one function according to the at least one called instruction. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Here, ‘non-transitory’ simply means that the storage medium is a tangible device and does not contain signals (e.g. electromagnetic waves), and the term does not distinguish between cases where data is stored semi-permanently or temporarily on the storage medium.

According to one embodiment, the method according to various embodiments disclosed in the present document may be provided as included in a computer program product. The computer program product may be traded between a seller and a buyer as a commodity. The computer program product may be distributed in the form of a machine-readable storage medium (e.g., a compact disc read only memory (CD-ROM)), or may be distributed online (e.g., downloaded or uploaded) via an application store (e.g., Play Store™) or directly between two user devices (e.g., smartphones). In the case of online distribution, at least a part of the computer program product may be at least temporarily stored or temporarily generated in a machine-readable storage medium, such as a memory of a manufacturer's server, a server of an application store, or an intermediary server.

According to various embodiments, each component (e.g., a module or a program) of the above-described components may include a single or multiple entities. According to various embodiments, one or more of the components or operations of the above-described components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (e.g., a module or a program) may be integrated into a single component. In such a case, the integrated component may perform one or more functions of each of the components of the plurality of components identically or similarly to those performed by the corresponding component of the plurality of components prior to the integration. According to various embodiments, the operations performed by the module, program or other component may be executed sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations may be executed in a different order, omitted, or one or more other operations may be added.

Claims (20)

In electronic devices,
housing;
A display that is visible through at least a portion of the housing and displays a screen using a plurality of pixels;
A display driving circuit providing a data voltage and a light emitting signal for driving each of the plurality of pixels to the display; and
A processor operatively connected to the display driving circuit,
The above processor,
Set 1 frame that the above display drives,
Check whether the above display shows a still screen for a specified period of time,
The above display driving circuit, when displaying the still screen,
Setting up a DA frame that provides the above data voltage to each driving transistor of the plurality of pixels and a DH frame that maintains the data voltage value written in the address section,
Set the DH frame to be repeated consecutively multiple times after the DA frame,
An electronic device configured to simultaneously supply the light-emitting signal to a plurality of lines connected to the plurality of pixels during at least a portion of the GI section of the DH frame. In claim 1,
Each of the above plurality of pixels,
A second transistor for supplying a data voltage to the driving transistor based on the first scan signal of the current frame;
A third transistor for maintaining the data voltage supplied to the driving transistor during the current frame based on the second scan signal of the current frame;
A fourth transistor for initializing the data voltage based on the second scan signal of the previous frame of the current frame;
A fifth transistor for supplying a high-potential reference voltage to the driving transistor based on the above-described light-emitting signal; and
An electronic device further comprising a sixth transistor for supplying driving current to a light-emitting element based on the light-emitting signal. In claim 2,
An electronic device wherein the third transistor and the fourth transistor are oxide thin film transistors (Oxide TFTs). In claim 1,
The above display driving circuit is an electronic device set to simultaneously supply the light emitting signal to the plurality of pixels arranged in the display during the DH/GI section of the DH frame. In claim 1,
The above display driving circuit is an electronic device set to simultaneously supply the light emitting signal to the plurality of pixels arranged in the display during a GI period excluding a time when the synchronization signal is in a high state during the DH frame. In claim 1,
The above display driving circuit is an electronic device that sets the DA frame and the DH frame to be alternately repeated in a general UI or web browser environment. In claim 1,
An electronic device wherein the display driving circuit is set to control the base brightness of the display based on the width of the GI section in which the light-emitting signal is simultaneously supplied to the plurality of pixels. In claim 1,
An electronic device in which the display driving circuit is set to perform global illumination (GI) driving that simultaneously supplies the light-emitting signal to the plurality of pixels arranged in the display during the GI section, which is at least a part of the DH frame, excluding the DA frame, within the 1 frame. In electronic devices,
housing;
A display that is visible through at least a portion of the housing and displays a screen using a plurality of pixels;
A display driving circuit providing a data voltage and a light emitting signal for driving each of the plurality of pixels to the display; and
A processor operatively connected to the display driving circuit,
The above processor,
Set 1 frame that the above display drives,
Check whether the above display shows a still screen for a specified period of time,
The above display driving circuit, when displaying the still screen,
Setting up a DA frame that provides the above data voltage to each driving transistor of the plurality of pixels and a DH frame that maintains the data voltage value written in the address section,
Set the DH frame to be repeated consecutively multiple times after the DA frame,
An electronic device configured to divide the above DH frame into a DH section and a GI section, and to wait without supplying the light-emitting signal in the DH section and to simultaneously supply the light-emitting signal to a plurality of lines connected to the plurality of pixels in the GI section. In electronic devices,
housing;
A display that is visible through at least a portion of the housing and displays a screen using a plurality of pixels;
A display driving circuit providing a data voltage and a light emitting signal for driving each of the plurality of pixels to the display; and
A processor operatively connected to the display driving circuit,
The above processor,
Set 1 frame that the above display drives,
Check whether the above display shows a still screen for a specified period of time,
The above display driving circuit, when displaying the still screen,
Setting up a DA frame that provides the above data voltage to each driving transistor of the plurality of pixels and a DH frame that maintains the data voltage value written in the address section,
Set the DH frame to be repeated consecutively multiple times after the DA frame,
An electronic device configured to simultaneously supply the light-emitting signal to a plurality of lines connected to the plurality of pixels during a GI period, which is a period other than a synchronization period in which the synchronization signal is in a high state among the above DH frames. delete delete delete delete delete delete delete delete delete delete

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