CN115704973A - Display device and driving method thereof - Google Patents

Abstract

The invention discloses a display device and a driving method thereof. The sub-pixel structure is arranged on the substrate and located in the display area, wherein a first sub-pixel area in the sub-pixel structure comprises a first switch element and a first electrode, and a second sub-pixel area in the sub-pixel structure comprises a second switch element and a second electrode. The scanning lines are arranged on the substrate, wherein the first scanning line is electrically connected with the first switch element, and the second scanning line is electrically connected with the second switch element. The display medium layer is arranged on the sub-pixel structure. The alignment layer is arranged between the sub-pixel structure and the display medium layer. The peripheral circuit is arranged on the substrate and positioned in the peripheral area, wherein the peripheral circuit comprises a grid driving circuit and a time schedule controller, the grid driving circuit is electrically connected with a plurality of scanning lines, and the time schedule controller is electrically connected with the grid driving circuit. The direction of the electric field on the first electrode is different from the direction of the electric field on the second electrode.

Description

Display device and driving method thereof

technical field

The present invention relates to a display device and its driving method, in particular to a display device including an anti-peeping mode and its driving method.

Background technique

Today's display devices have been widely used in various electronic products, such as notebook computers, smart phones, wearable devices, smart watches, and car display screens, etc., providing users with more convenient information transmission and display. In the traditional anti-peeping technology of the display device, generally, an anti-peeping sheet is mounted on the display device, or a viewing angle control panel is additionally provided in the display device. However, these traditional anti-peeping technologies will increase the overall thickness and weight of the display device, and even cause the display brightness of the display device to decrease significantly.

Contents of the invention

The present invention provides a display device, wherein each sub-pixel structure includes a first sub-pixel area and a second sub-pixel area which are respectively controlled and have different extending directions of slits, so as to achieve display and anti-peeping effects. Moreover, the present invention also provides a driving method of a display device, the sub-pixel structure of the display device includes a first sub-pixel area and a second sub-pixel area.

In order to solve the above technical problems, the present invention provides a display device, the display device has a display area and a peripheral area located at least one outside of the display area, and the display device includes a substrate, a plurality of sub-pixel structures, a plurality of scanning lines, a display medium layer, alignment layer and peripheral circuits. The sub-pixel structures are disposed on the substrate and located in the display area, wherein at least one sub-pixel structure includes a first sub-pixel area and a second sub-pixel area, the first sub-pixel area includes a first switching element and a first electrode, and the second sub-pixel structure includes a first sub-pixel area and a first sub-pixel area. The pixel area includes a second switch element and a second electrode. The scanning lines are arranged on the substrate, wherein the plurality of scanning lines include a plurality of first scanning lines and a plurality of second scanning lines, one of the first scanning lines is electrically connected to at least one first switching element, and one of the second scanning lines At least one second switching element is electrically connected. The display medium layer is arranged on the multiple sub-pixel structures. The alignment layer is arranged between the plurality of sub-pixel structures and the display medium layer. The peripheral circuit is disposed on the substrate and located in the peripheral area, wherein the peripheral circuit includes a gate driving circuit and a timing controller, the gate driving circuit is electrically connected to a plurality of scanning lines, and the timing controller is electrically connected to the gate driving circuit. The direction of the electric field on the first electrode is different from the direction of the electric field on the second electrode.

In order to solve the above technical problems, the present invention also provides a driving method of a display device. The driving method includes: providing a display device, the display device has a display area and a peripheral area located at least one outside of the display area, wherein the display device includes a substrate, a plurality of sub-pixel structures, a plurality of scanning lines, a display medium layer and an alignment layer, and a sub-pixel The structure is arranged on the substrate and located in the display area, wherein at least one sub-pixel structure includes a first sub-pixel area and a second sub-pixel area, the first sub-pixel area includes a first switching element and a first electrode, and the second sub-pixel area It includes a second switching element and a second electrode, the direction of the electric field on the first electrode is different from the direction of the electric field on the second electrode, the scanning lines are arranged on the substrate, and the plurality of scanning lines include a plurality of first scanning lines and a plurality of second scanning lines. Scanning lines, one of the first scanning lines is electrically connected to at least one first switching element, one of the second scanning lines is electrically connected to at least one second switching element, the display medium layer is arranged on a plurality of sub-pixel structures, and the alignment layer is arranged on Between a plurality of sub-pixel structures and the display medium layer; displaying the first sub-pixel area, so that the display device is in a display mode; and stopping the display of the first sub-pixel area, and enabling the display of the second sub-pixel area, so that The display device is in privacy mode.

In the present invention, since the direction of the electric field on the first electrode of the first sub-pixel area is designed to be different from the direction of the electric field on the second electrode of the second sub-pixel area, and the first sub-pixel area is connected by different scan lines The first switch element in the second sub-pixel area and the second switch element in the second sub-pixel area, therefore, the anti-peeping function can be performed by whether the sub-pixel area is displayed or not, and there is no need for additional settings that will cause adverse effects on thickness, weight, and display brightness Affected privacy screens or viewing angle control panels.

Description of drawings

FIG. 1 is a schematic top view of a display area of a display device according to an embodiment of the present invention.

Figure 2 is a schematic cross-sectional view along the line A-A' of Figure 1.

FIG. 3 is a schematic diagram showing the signals of the scanning lines and the display conditions of the first sub-pixel area and the second sub-pixel area in the first display mode of the display device according to an embodiment of the present invention.

FIG. 4 is a schematic diagram showing the signals of the scanning lines and the display conditions of the first sub-pixel area and the second sub-pixel area in the second display mode of the display device according to an embodiment of the present invention.

FIG. 5 is a schematic diagram showing the signals of the scanning lines and the display conditions of the first sub-pixel area and the second sub-pixel area when the display device is in the anti-peeping mode according to an embodiment of the present invention.

FIG. 6 is a schematic top view of a transparent conductive layer of a display device according to another embodiment of the present invention.

FIG. 7 is a schematic top view of a display device according to an embodiment of the present invention.

FIG. 8 is a schematic top view of a sub-pixel structure, scan lines and gate driving circuits of a display device according to an embodiment of the present invention.

FIG. 9 is a schematic top view of a display device according to an embodiment of the present invention.

FIG. 10 is a schematic top view of a sub-pixel structure, scan lines and gate driving circuits of a display device according to an embodiment of the present invention.

FIG. 11 is a schematic top view of a sub-pixel structure, scan lines and gate driving circuits of a display device according to an embodiment of the present invention.

Explanation of reference numerals: 100, 200, PD1, PD2, PD2'—display device; 110—substrate; 120—subpixel structure; 120a—first subpixel area; 120b—second subpixel area; 122—first electrode ; 122S-first slit; 124-second electrode; 124S-second slit; 126-third electrode; 128-fourth electrode; 130, 132-alignment layer; 140-display medium layer; Substrate; AR-display area; CL1-first conductive layer; CL2-second conductive layer; CL3-third conductive layer; CL4-fourth conductive layer; D1-first direction; D2-second direction; DA-data Line; Dm-alignment direction; Ds1-first slit direction; Ds2-second slit direction; GDR-gate drive circuit; GDR1-first gate drive circuit part; GDR2-second gate drive circuit part; IL1-first insulating layer; IL2-second insulating layer; IL3-third insulating layer; MU-memory unit; PR-peripheral region; S1-first timing; S2-second timing; S3-third timing; S4 -Fourth timing; SC-scanning line; SC1, SC1', SC1_1, SC1_2, SC1_3, SC1_4-first scanning line; SC2, SC2', SC2_1, SC2_2, SC2_3, SC2_4-second scanning line; SDR-source Driving circuit; T1-first switching element; T2-second switching element; TC-timing controller; θ ₁ -first included angle; θ ₂ -second included angle.

Detailed ways

In order to enable those skilled in the art to further understand the present invention, the preferred embodiments of the present invention are listed below, and the composition and desired effects of the present invention are described in detail with reference to the accompanying drawings. It should be noted that the drawings are all simplified schematic diagrams, therefore, only the components and combinations related to the present invention are shown to provide a clearer description of the basic structure or implementation method of the present invention, and the actual components and layout may be more accurate. for complex. In addition, for the convenience of description, the components shown in the drawings of the present invention are not drawn in proportion to the number, shape, and size of the actual implementation, and the detailed proportions can be adjusted according to design requirements.

In the following description and claims, when "the A1 component is formed by B1", it means that the formation of the A1 component has B1 or uses B1, and the formation of the A1 component does not exclude one or more other features, regions, and steps , operation and/or existence or use of components. The ordinal numbers used in the specification and claims, such as "first", "second", etc., are used to modify elements, which do not imply and represent any previous ordinal numbers of the (or the plurality of) elements, Nor does it represent the order of a certain element with another element or the order of the manufacturing method. The use of the multiple ordinal numbers is only used to clearly distinguish an element with a certain name from another element with the same name. The claims and the description may not use the same term, accordingly, the first component in the description may be the second component in the claim. It should be noted that, in the following embodiments, without departing from the spirit of the present invention, features in several different embodiments may be replaced, reorganized, and mixed to complete other embodiments. As long as the features of the various embodiments do not violate the spirit of the invention or conflict, they can be mixed and matched arbitrarily.

The display device of the present invention can be a non-self-illuminating display device, such as a liquid crystal display device, an electrophoretic display device or other suitable display devices, and the display device of the present invention can also be a display device with a touch function (touch display device ), and the following embodiments take a liquid crystal display device as an example for illustration. It should be noted that the liquid crystal display device of the present invention can be, for example, a horizontal electric field driven liquid crystal display device and a fringe field switched liquid crystal display device, but not limited thereto. The display device of the present invention may include a display area and a peripheral area located at least one outside of the display area, wherein elements for performing display functions may be arranged in the display area, and the elements arranged in the peripheral area may assist elements in the display area. , so that the components in the display area can perform display functions. In some embodiments, the peripheral area may be disposed on multiple outer sides of the display area. For example, the peripheral area can surround the display area, but not limited thereto.

Please refer to FIG. 1 and FIG. 2. FIG. 1 is a schematic top view of a display area of a display device according to a first embodiment of the present invention, and FIG. 2 is a schematic cross-sectional view along line A-A' of FIG. 1 . It should be noted that, in this embodiment, the display device 100 is described by taking a fringe field switching liquid crystal display device as an example, but the present invention is not limited thereto. As shown in FIG. 1 and FIG. 2 , the display device 100 of this embodiment includes a substrate 110, a plurality of sub-pixel structures 120, a plurality of scanning lines SC, a plurality of data lines DA, a display medium layer 140, and at least one alignment layer (such as, Alignment layers 130, 132) and the opposite substrate 150, wherein the substrate 110 and the opposite substrate 150 are disposed opposite to each other, and the sub-pixel structure 120, the scan line SC, the data line DA, the display medium layer 140 and the alignment layer 130 are disposed on the substrate 110 , while the alignment layer 132 is disposed opposite to the opposite substrate 150 , and the display medium layer 140 is located between the substrate 110 and the opposite substrate 150 .

The substrate 110 and the opposite substrate 150 may comprise any suitable materials. In this embodiment, the substrate 110 and the opposite substrate 150 can each be a rigid substrate or a flexible substrate, and can include, for example, glass, plastic, quartz, sapphire, polyimide and/or poly Ethylene terephthalate, but not limited thereto. Moreover, the materials, shapes and sizes of the substrate 110 and the opposite substrate 150 may be the same or different from each other.

As shown in FIG. 1 and FIG. 2 , the sub-pixel structure 120 may be disposed between the display medium layer 140 and the substrate 110 and located in the display area, and the sub-pixel structure 120 is a unit of a display screen. The display device 100 may include a plurality of pixels, each pixel may include at least one sub-pixel structure 120 , and the number and color of the sub-pixel structures 120 included in a pixel may be changed according to requirements. For example, the plurality of sub-pixel structures 120 may include a green sub-pixel structure, a red sub-pixel structure and a blue sub-pixel structure, and each pixel may include a green sub-pixel structure, a red sub-pixel structure and a blue sub-pixel structure , so that the display device 100 can be a color display device, but not limited thereto. For another example, a plurality of sub-pixel structures 120 can be used to generate light of the same color, and each pixel can include one sub-pixel structure 120 , so that the display device 100 can be a monochrome display device, but not limited thereto.

As shown in FIG. 2, the sub-pixel structure 120 can be formed by at least one insulating layer, at least one conductive layer, at least one semiconductor layer, other suitable film layers or a combination thereof, wherein the material of the conductive layer can include metal, alloy, transparent conductive materials (such as indium tin oxide, indium zinc oxide, etc.), other suitable conductive materials or combinations thereof, examples of insulating layer materials may include silicon oxide, silicon nitride, silicon oxynitride, other suitable insulating materials or combinations thereof, semiconductor Examples of materials for the layers include polysilicon, amorphous silicon, metal oxide semiconductors (such as InGaZnO), other suitable semiconductor materials, or combinations thereof, but are not limited thereto. In this embodiment, the first conductive layer CL1, the first insulating layer IL1, the semiconductor layer (not shown), the second conductive layer CL2, the second insulating layer IL2, the third conductive layer CL3, the third insulating layer IL3 and The fourth conductive layers CL4 can be stacked sequentially and disposed on the substrate 110 to form a plurality of sub-pixel structures 120 , but not limited thereto.

In this embodiment, each sub-pixel structure 120 may include a first sub-pixel area 120a and a second sub-pixel area 120b, wherein the first sub-pixel area 120a may be referred to as a display sub-pixel area in the present invention, and is used for conventional For display, the second sub-pixel area 120b may be called an anti-peeping sub-pixel area in the present invention, and is used for displaying in the anti-peeping mode. The first sub-pixel area 120a may include a first switching element T1, and the second sub-pixel area 120b may include a second switching element T2, wherein the first switching element T1 and the second switching element T2 may be, for example, top-gate thin film transistors, Bottom-gate TFTs, double-gate TFTs or other suitable types of TFTs, but not limited thereto. For example, the first switching element T1 and the second switching element T2 in this embodiment can be bottom-gate thin film transistors, and the gate of the first switching element T1 and the gate of the second switching element T2 can be connected by a first conductive layer CL1, the source and drain of the first switching element T1 and the source and drain of the second switching element T2 can be formed by the second conductive layer CL2, the channel layer of the first switching element T1 and the second switching element The channel layer of T2 may be formed by a semiconductor layer, but not limited thereto. It should be noted that if the first switch element T1 and the second switch element T2 are other types of thin film transistors, the stacking sequence of the insulating layer, the conductive layer and the semiconductor layer can be adjusted according to requirements.

The first sub-pixel area 120 a further includes a first electrode 122 , and the second sub-pixel area 120 b further includes a second electrode 124 . It should be noted that the first electrode 122 is the electrode closest to the display medium layer 140 in the first sub-pixel region 120a, and the second electrode 124 is the electrode closest to the display medium layer 140 in the second sub-pixel region 120b. In this embodiment, the first sub-pixel region 120a further includes a third electrode 126, the second sub-pixel region 120b further includes a fourth electrode 128, and the first electrode 122 is disposed between the third electrode 126 and the display medium layer 140, The second electrode 124 is disposed between the fourth electrode 128 and the display medium layer 140 , but not limited thereto. Since the display device 100 of this embodiment is a fringe electric field switching liquid crystal display device, one of the first electrode 122 and the third electrode 126 in the first sub-pixel region 120a is a pixel electrode, and the first electrode in the first sub-pixel region 120a is a pixel electrode. The other of the first electrode 122 and the third electrode 126 is a common electrode, one of the second electrode 124 and the fourth electrode 128 of the second sub-pixel area 120b is a pixel electrode, and the second electrode of the second sub-pixel area 120b is a pixel electrode. The other of the second electrode 124 and the fourth electrode 128 is a common electrode.

For example, in this embodiment (as shown in FIG. 1 and FIG. 2 ), the first electrode 122 and the second electrode 124 are pixel electrodes, and the first electrode 122 and the second electrode 124 are made of the same conductive layer (eg, The fourth conductive layer CL4) is formed, the first electrode 122 and the second electrode 124 are separated from each other, the third electrode 126 and the fourth electrode 128 are common electrodes, and the third electrode 126 and the fourth electrode 128 are made of the same conductive layer (such as , the third conductive layer CL3) is formed, and the third electrode 126 and the fourth electrode 128 have regions connected to each other, but not limited thereto. In this embodiment, since the first electrode 122 and the second electrode 124 are pixel electrodes, and the third electrode 126 and the fourth electrode 128 are common electrodes, therefore, the first electrode 122 is electrically connected to the drain of the first switching element T1, The second electrode 124 is electrically connected to the drain of the second switching element T2, and the third electrode 126 and the fourth electrode 128 are electrically connected to a common voltage source, but not limited thereto. In this embodiment, the third conductive layer CL3 and the fourth conductive layer CL4 can be, for example, transparent conductive layers, but not limited thereto.

For another example, in other embodiments (not shown in the figure), the first electrode 122 and the second electrode 124 are common electrodes and are formed by the same conductive layer (for example, the fourth conductive layer CL4), and the third electrode 126 The fourth electrode 128 is a pixel electrode and is formed of the same conductive layer (eg, the third conductive layer CL3 ), while the third electrode 126 and the fourth electrode 128 are separated from each other, but not limited thereto. In this case, the first electrode 122 and the second electrode 124 are electrically connected to a common voltage source, the third electrode 126 is electrically connected to the drain of the first switching element T1, and the fourth electrode 128 is electrically connected to the drain of the second switching element T2) , but not limited to this.

The scanning line SC is electrically connected to the switching element (eg, the gate of the switching element) of the sub-pixel structure 120 to provide a switching signal to the switching element, and the data line DA is electrically connected to the switching element (eg, the source of the switching element) of the sub-pixel structure 120. ) to provide the display grayscale signal to the switch element, and when the switch element is turned on, the display grayscale signal is transmitted to the pixel electrode (eg, the first electrode 122 and/or the second electrode 124 in this embodiment). For example, in FIG. 1 and FIG. 2, the scan line SC may be formed by the first conductive layer CL1 and extends along the first direction D1, and the data line DA may be formed by the second conductive layer CL2 and extend along the second direction D2. Extending, wherein the first direction D1 is not parallel to the second direction D2 (for example, the first direction D1 is perpendicular to the second direction D2), but not limited thereto.

In FIG. 1 and FIG. 2, a plurality of scan lines SC includes a first scan line SC1 and a second scan line SC2, and each first scan line SC1 is electrically connected to the gate of at least one first switching element T1 (or, the first scan line One of the lines SC1 is electrically connected to at least one first switching element T1), and each second scanning line SC2 is electrically connected to the gate of at least one second switching element T2 (or, one of the second scanning lines SC2 is electrically connected to at least one first switching element T2). Two switching elements T2), that is, each sub-pixel structure 120 corresponds to two scan lines SC, but not limited thereto. In FIG. 1, each data line DA is electrically connected to the source of at least one first switch element T1 and the source of at least one second switch element T2 (or, one of the data lines DA is electrically connected to at least one first switch element T2). The source of a switching element T1 and the source of at least one second switching element T2), that is to say, the first switching element T1 and the second switching element T2 in the same sub-pixel structure 120 are electrically connected to the same data line DA, But not limited to this.

In FIG. 1 , the first scan lines SC1 and the second scan lines SC2 are arranged alternately, but not limited thereto. It should be noted that, in this embodiment, the first scan line SC1 is arranged between the first sub-pixel region 120a and the second sub-pixel region 120b, that is, the first sub-pixel region 120a and the second sub-pixel region 120b are respectively arranged on opposite sides of the first scan line SC1, so that the first scan line SC1 passes through the sub-pixel structure 120, and the sub-pixel structure 120 is located between two adjacent second scan lines SC2, but not limit. In other embodiments, the second scan line SC2 is disposed between the first sub-pixel region 120a and the second sub-pixel region 120b, so that the second scan line SC2 passes through the sub-pixel structure 120, and the sub-pixel structure 120 is located between two between adjacent first scan lines SC1, but not limited thereto. In other embodiments (for example, FIG. 8 ), the first scan line SC1 and the second scan line SC2 are respectively arranged on opposite sides of the sub-pixel structure 120 (the sub-pixel structure 120 is located between the first scan line SC1 and the second scan line SC2), therefore, no scan line SC passes through the sub-pixel structure 120, and the first scan line SC1 and the second scan line SC2 may exist between two adjacent sub-pixel structures 120, but not in the This is the limit. On the other hand, in FIG. 1, the data line DA is disposed between two adjacent sub-pixel structures 120, but not limited thereto.

In the present invention, the sizes of the first sub-pixel region 120a and the second sub-pixel region 120b can be designed according to requirements. Taking FIG. 1 as an example, the area of the first sub-pixel region 120a may be larger than the area of the second sub-pixel region 120b, but not limited thereto. In other embodiments, the area of the first sub-pixel region 120a may also be equal to or smaller than the area of the second sub-pixel region 120b. In the present invention, the top view shapes of the first sub-pixel region 120a and the second sub-pixel region 120b can be designed according to requirements. For example, in FIG. 1 , the top view shapes of the first sub-pixel region 120 a and the second sub-pixel region 120 b may be rectangular, but not limited thereto.

In the present invention, the arrangement of the first sub-pixel area 120a and the second sub-pixel area 120b can be designed according to requirements. For example, in this embodiment (as shown in FIG. 1 ), the relative relationship between the first sub-pixel region 120a and the second sub-pixel region 120b in each sub-pixel structure 120 is the same, therefore, a plurality of first sub-pixel regions 120a can be arranged along the first direction D1, the plurality of second sub-pixel regions 120b can be arranged along the first direction D1, and the plurality of first sub-pixel regions 120a and the plurality of second sub-pixel regions 120b can be arranged in the second direction D2 set alternately, but not limited to this. In other embodiments, in the sub-pixel structures 120 arranged in the first direction D1 and/or the second direction D2, the relative relationship between the first sub-pixel region 120a and the second sub-pixel region 120b in each sub-pixel structure 120 Not the same. For example, the relative relationship between the first sub-pixel region 120a and the second sub-pixel region 120b in two adjacent sub-pixel structures 120 in the first direction D1 may be different, so that the plurality of first sub-pixel regions 120a The plurality of second sub-pixel regions 120b may be arranged alternately in the first direction D1, but not limited thereto.

In FIG. 2, the display medium layer 140 is disposed on the sub-pixel structure 120. Specifically, the display medium layer 140 is sandwiched between the substrate 110 and the opposite substrate 150, and the display medium layer 140 can be, for example, a liquid crystal layer or other Suitable medium layer. In this embodiment, the display medium layer 140 may be a liquid crystal layer including a plurality of liquid crystal molecules, but not limited thereto. It should be noted that the liquid crystal molecules can be positive liquid crystal molecules or negative liquid crystal molecules, and the liquid crystal molecules in this embodiment are taken as positive liquid crystal molecules. In the present invention, a signal can be provided to the common electrode and the pixel electrode in the sub-pixel structure 120 to generate a corresponding electric field to correspondingly change the light (backlight) transmittance of the display medium layer 140 (for example, to rotate the liquid crystal molecules through the electric field ), so as to achieve the effect of displaying the screen.

In this embodiment, the display device 100 may have two alignment layers 130, 132, the alignment layer 130 is disposed between the sub-pixel structure 120 and the display medium layer 140, and the alignment layer 132 is disposed between the display medium layer 140 and the opposite substrate 150 between. The alignment layers 130, 132 are used to align the molecules (for example, liquid crystal molecules) in the display medium layer 140, and the alignment direction Dm of the alignment layers 130, 132 can be defined by any suitable alignment method, such as rubbing, cross-linking reaction , photoalignment or other suitable methods. In the present invention, the alignment direction Dm can be designed according to requirements. For example, in this embodiment (as shown in FIG. 1 ), the regions of the alignment layer 130 corresponding to the plurality of sub-pixel structures 120 all have the same alignment direction Dm (that is, the region of the alignment layer 130 corresponding to the first sub-pixel region 120a The region of the second sub-pixel region 120b has the same alignment direction Dm), and the region of the alignment layer 132 corresponding to the plurality of sub-pixel structures 120 also has the same alignment direction Dm (that is, the region of the alignment layer 132 corresponding to the first sub-pixel region 120a region and the region of the second sub-pixel region 120b have the same alignment direction Dm), that is to say, the alignment direction Dm of the region of the alignment layer 130 corresponding to the sub-pixel structure 120 is the same, and the alignment layer corresponding to the sub-pixel structure 120 The alignment directions Dm of the regions 132 are also the same, specifically, the display medium layer 140 in the regions where the first sub-pixel region 120a and the second sub-pixel region 120b are located in the sub-pixel structure 120 all have the same alignment direction Dm. For example, in this embodiment (as shown in FIG. 1 ), the alignment directions Dm of the alignment layers 130 and 132 may be parallel to the second direction D2, but not limited thereto. In addition, in some embodiments, the alignment layers 130 and 132 of the entire layer have parallel or antiparallel alignment directions.

In order to make the sub-pixel structure 120 generate a suitable electric field and electric field direction to change the light (backlight) transmittance of the display medium layer 140 (for example, to rotate the liquid crystal molecules through the electric field), the first electrode 122 in the first sub-pixel area 120a With at least one first slit 122S, the second electrode 124 in the second sub-pixel area 120b has at least one second slit 124S, therefore, the first electrode 122 and the third electrode 126 can be in the first sub-pixel area 120a An electric field that affects the rotation of the molecules (liquid crystal molecules) in the display medium layer 140 is generated, and the second electrode 124 and the fourth electrode 128 can generate an electric field that affects the rotation of the molecules (liquid crystal molecules) in the display medium layer 140 in the second sub-pixel region 120b. rotating electric field.

In the present invention, in order to make the display device 100 have a peep prevention function, the direction of the electric field generated by the first electrode 122 and the third electrode 126 is different from the direction of the electric field generated by the second electrode 124 and the fourth electrode 128 (that is, the first The direction of the electric field on the electrode 122 is different from the direction of the electric field on the second electrode 124). In this embodiment (as shown in FIG. 1 and FIG. 2 ), the design of the first slit 122S of the first electrode 122 in the first sub-pixel region 120a is different from that of the second electrode 124 in the second sub-pixel region 120b. The design of the second slit 124S makes the direction of the electric field on the first electrode 122 different from the direction of the electric field on the second electrode 124 .

Since the first sub-pixel region 120a is used for normal display, and the second sub-pixel region 120b is used for display in the anti-peeping mode, therefore, the design of the first slit 122S needs to make the first sub-pixel region 120a display There is a good display effect (for example, high brightness, high contrast and/or wide viewing angle), and the design of the second slit 124S needs to make the visible viewing angle caused by the second sub-pixel region 120b smaller when displaying. In detail, in this embodiment (as shown in FIG. 1 ), the first slit 122S can extend along the first slit direction Ds1, and the second slit 124S can extend along the second slit direction Ds2, wherein the first slit 122S can extend along the second slit direction Ds2. The slit direction Ds1 may not be parallel to the second slit direction Ds2, so that the direction of the electric field generated by the first electrode 122 and the third electrode 126 may be different from the direction of the electric field generated by the second electrode 124 and the fourth electrode 128 (ie, The direction of the electric field on one electrode 122 may be different from the direction of the electric field on the second electrode 124). For example, the included angle between the first slit direction Ds1 and the second slit direction Ds2 may be greater than or equal to 20 degrees, but not limited thereto.

In another point of view, there is a first angle θ ₁ between the first slit direction Ds1 and the alignment direction Dm of the alignment layer 130 (or alignment layer 132), and the second slit direction Ds2 132) There is a second included angle θ ₂ between the alignment directions Dm, and the first included angle θ ₁ is different from the second included angle θ ₂ . Please refer to Table 1. Table 1 records the light transmittance, contrast ratio and slit direction of the display device caused by various slit directions based on the simulation of the luminance and contrast ratio at each viewing angle caused by various slit directions. The luminance ratio of a display device whose included angle with the alignment direction Dm of the alignment layer 130 (or alignment layer 132) is 7 degrees (hereinafter simply referred to as having a slit direction of 7 degrees), wherein the angle θ in Table 1 is the slit direction The included angle between the slit direction and the alignment direction Dm of the alignment layer 130 (or the alignment layer 132 ).

[Table 1] Light transmittance, contrast ratio, and luminance ratio of a display device with a slit direction of 7 degrees due to the slit direction

In the simulation of luminance and contrast of each viewing angle and Table 1, when the difference between the angle θ and 7 degrees is larger, the luminance and contrast of each viewing angle are lower, so that the viewable viewing angle of the display device 100 is reduced. In addition, when the difference between the angle θ and 7 degrees is larger, if the user views the display device 100 at a smaller viewing angle, the user can still see the display of the display device 100 although the brightness and contrast are lower. screen; if the user watches the display device 100 with a larger viewing angle, the user will find it difficult to see the display screen of the display device 100 , and even the user can hardly see the display screen of the display device 100 . Therefore, the present invention uses this characteristic to carry out anti-peeping design.

According to the simulation of luminance and contrast at various viewing angles and Table 1, the present invention designs the first angle _θ1 between the first slit direction Ds1 and the alignment direction Dm to be different from the second slit direction Ds2 and the alignment direction Dm The second included angle θ ₂ between them enables the display device 100 to have an anti-peeping function. In some embodiments, the first included angle θ ₁ may be smaller than the second included angle θ ₂ , but not limited thereto. In some embodiments, the absolute value of the difference between the first angle _θ1 and the second angle _θ2 may be greater than or equal to 20 degrees, so that the display characteristics of the first sub-pixel region 120a and the second sub-pixel region 120b There are large differences, but not limited to this. In some embodiments, the first included angle _θ1 can be 4 degrees to 10 degrees (for example, 7 degrees), and the second included angle _θ2 can be 30 degrees to 70 degrees or 40 degrees to 60 degrees (for example, 50 degrees). ) to obtain a good display effect and anti-peeping effect, but not limited thereto.

According to the above-mentioned design for the first slit direction Ds1 and the second slit direction Ds2, when the first sub-pixel region 120a and the second sub-pixel region 120b display with the maximum grayscale signal (for example, but not limited to, 255) At this time, the viewing angle caused by the second sub-pixel region 120b may be smaller than the viewing angle caused by the first sub-pixel region 120a. In addition, according to Table 1 and the above design for the first slit direction Ds1 and the second slit direction Ds2, when the first sub-pixel region 120a and the second sub-pixel region 120b display grayscale signals at the maximum (for example, but not limited to , 255) when displaying, the ratio of the luminance of the second sub-pixel region 120b to the luminance of the first sub-pixel region 120a may be less than or equal to 0.7 (for example, the first included angle _θ1 is 7 degrees, and the second included angle θ ₂ is 20 degrees to 70 degrees), but not limited thereto.

The display device 100 may further include any desired film layers and/or structures. In some embodiments, the display device 100 may also optionally include a backlight module, so that the substrate 110 is located between the backlight module and the opposite substrate 150 to provide backlight. In addition, the display device 100 may optionally further include a light blocking layer. The light blocking layer may have light shielding properties, and is disposed on the substrate 110 or the opposite substrate 150 according to requirements. The light blocking layer may include, for example, black photoresist, black ink, black resin, black pigment, other suitable materials, or combinations thereof. The light blocking layer is used, for example, to shield underlying elements (eg, opaque switching elements or wires) or to reduce the probability of external light being reflected by elements in the display device 100 (eg, opaque switching elements or wires), but it is not intended to be limit. In some embodiments, the light blocking layer has a plurality of openings to define the light emitting regions of the sub-pixel structures 120 and separate the sub-pixel structures 120 in a plan view.

In some embodiments, the display device 100 may optionally include a color conversion layer, wherein the color conversion layer is used for color conversion of the received light. The color conversion layer can be disposed on the substrate 110 or the opposite substrate 150 according to requirements, and corresponds to the light-emitting area of the sub-pixel structure 120 in a plan view, wherein the color conversion layer is located on the light-emitting surface of the display device 100 and the components that emit light in the display device 100 (such as backlight module). In some embodiments, the color conversion layer may include color resists, quantum dot materials, fluorescent materials, phosphorescent materials, other suitable materials, or any combination thereof. In addition, the color conversion layers corresponding to different types of sub-pixel structures 120 can perform different light conversions. For example, the color conversion layer corresponding to the green sub-pixel structure can be used to convert the incident light into green light, the color conversion layer corresponding to the red sub-pixel structure can be used to convert the incident light into red light, and the color corresponding to the blue sub-pixel structure The conversion layer can convert incident light into blue light, but not limited thereto. In addition, in some embodiments, the display device 100 may also optionally include an optical film layer, such as an anti-reflection film, a brightness enhancement film, a polarizer, other suitable film layers, or any combination thereof, and the optical film layer may be disposed on any suitable location.

Please refer to FIG. 3 to FIG. 5. FIG. 3 is a schematic diagram showing the signals of the scanning lines and the display conditions of the first sub-pixel area and the second sub-pixel area of the display device in the first display mode according to an embodiment of the present invention. 4 is a schematic diagram showing the signal of the scanning line and the display situation of the first sub-pixel area and the second sub-pixel area in the second display mode of the display device according to an embodiment of the present invention. FIG. 5 shows an embodiment of the present invention A schematic diagram of the signal of the scanning line and the display of the first sub-pixel area and the second sub-pixel area of the display device in the anti-peeping mode, wherein the display mode of the display device may include the first display mode and/or the second display mode. It should be noted that when the sub-pixel areas in Figures 3 to 5 are drawn with a dotted grid bottom, it means that the sub-pixel area is in a display state; when the sub-pixel areas in Figures 3 to 5 are drawn with a white background When drawn, it indicates that the sub-pixel area is in a state of stopping display. In FIG. 3 to FIG. 5 , the first scan line SC1 is used to provide a signal to the first switching element T1 of the first sub-pixel region 120 a of the sub-pixel structure 120 in the first row, and the second scan line SC2 is used to provide a signal to the first switching element T1 of the sub-pixel structure 120 in the first row. The second switching element T2 of the second sub-pixel area 120b of the sub-pixel structure 120 in the row provides a signal, and the first scanning line SC1' is used to control the first sub-pixel area 120a of the sub-pixel structure 120 in the second row. The switch element T1 provides a signal, and the second scan line SC2 ′ is used to provide a signal to the second switch element T2 of the second sub-pixel region 120 b of the sub-pixel structure 120 in the second row. In FIG. 3 to FIG. 5 , the first timing sequence S1 , the second timing sequence S2 , the third timing sequence S3 and the fourth timing sequence S4 do not overlap each other.

In the present invention, the display device 100 has a first display mode (eg, FIG. 3 ), a second display mode (eg, FIG. 4 ) and an anti-peeping mode (eg, FIG. 5 ). When the display device 100 is in the first display mode, the first sub-pixel region 120a and the second sub-pixel region 120b display; when the display device 100 is in the second display mode, the first sub-pixel region 120a displays, and the second The sub-pixel area 120b stops displaying; when the display device 100 is in the anti-peeping mode, the first sub-pixel area 120a stops displaying, and the second sub-pixel area 120b performs displaying. The following will describe the first display mode, the second display mode, and the anti-peeping mode in detail, but it should be noted that the operation modes of the three modes of the present invention are only illustrative. Therefore, the first display mode, The operation modes of the second display mode and the anti-peeping mode are not limited to the following.

As shown in FIG. 3 and FIG. 4 , in the first display mode and the second display mode, the first scan line SC1 can provide a turn-on signal to the first sub-pixels of the sub-pixel structure 120 in the first row at the first timing S1 The first switching element T1 of the region 120 a , the first scan line SC1 ′ may provide a turn-on signal to the first switching element T1 of the first sub-pixel region 120 a of the sub-pixel structure 120 of the second row in the third timing S3 . Therefore, the first sub-pixel regions 120a of all the sub-pixel structures 120 shown in FIG. 3 and FIG. 4 can display images according to the received display grayscale signal (provided by the data line DA). In the present invention, since the first slit 122S of the first electrode 122 of the first sub-pixel region 120a is designed to enable the first sub-pixel region 120a to have a good display effect when displaying, as long as the first sub-pixel When the area 120a performs image display, the display device 100 can present a good image display effect.

In one embodiment, as shown in FIG. 3 , when the display device 100 is in the first display mode, the second scanning line SC2 may provide an on signal to the second sub-pixel structure 120 of the first row in the second timing S2. The second switching element T2 of the sub-pixel region 120b, and the second scan line SC2' may provide a turn-on signal to the second switching element T2 of the second sub-pixel region 120b of the sub-pixel structure 120 of the second row in the fourth timing S4. Therefore, the second sub-pixel regions 120b of all the sub-pixel structures 120 shown in FIG. 3 can also display images according to the received display grayscale signal (provided by the data line DA). The display characteristics of the first display mode can provide the user with a higher resolution (high resolution) and a more discreet view of the viewing angle (narrower viewing angle).

In another embodiment, as shown in FIG. 4 , when the display device 100 is in the second display mode, the second scan line SC2 does not provide the turn-on signal to the second sub-pixel region 120b of the sub-pixel structure 120 in the first row. The second switching element T2 of the second scan line SC2 ′ also does not provide a turn-on signal to the second switching element T2 of the second sub-pixel region 120 b of the sub-pixel structure 120 in the second row. Therefore, the second sub-pixel regions 120b of all the sub-pixel structures 120 shown in FIG. 4 stop displaying. When the display device 100 is in the second display mode, the scanning line SC can provide the turn-on signal to the first switching element T1 and/or the second switching element T2 at the corresponding timing, while the data line DA provides the lowest display grayscale signal ( For example, 0 gray scale) is given to the second switching element T2, so that the second sub-pixel regions 120b of all the sub-pixel structures 120 stop displaying. The display characteristics of the second display mode can provide the user with a normal view under the reading condition of low light source and energy-saving state.

As shown in FIG. 5 , when the display device 100 is in the anti-peeping mode, the first scanning line SC1 does not provide a turn-on signal to the first switching element T1 of the first sub-pixel region 120a of the sub-pixel structure 120 in the first row, and the second The scan line SC2 provides the turn-on signal to the second switching element T2 of the second sub-pixel region 120b of the sub-pixel structure 120 in the first row in the second timing S2, and the first scan line SC1' does not provide the turn-on signal to the second switch element T2 of the second row. The first switching element T1 of the first sub-pixel region 120a of the sub-pixel structure 120, the second scanning line SC2' provides an on signal to the second sub-pixel region 120b of the sub-pixel structure 120 of the second row in the fourth timing S4. The second switching element T2. Therefore, the first sub-pixel regions 120a of all the sub-pixel structures 120 shown in FIG. Display screen. In the present invention, since the second slit 124S of the second electrode 124 of the second sub-pixel region 120b is designed to make the viewing angle caused by the second sub-pixel region 120b smaller when displaying, the display device 100's display in anti-peep mode has a good anti-peep effect. In the anti-peeping mode of another embodiment, the scanning line SC can provide the turn-on signal to the first switching element T1 and/or the second switching element T2 at the corresponding timing, while the data line DA provides the lowest display grayscale signal ( For example, 0 grayscale) is given to the first switching element T1, so that the first sub-pixel region 120a does not display.

According to the above, in the driving method of the display device 100 , after the above-mentioned display device 100 is provided, different operations can be performed on the sub-pixel structure 120 according to the mode of the display device 100 . In FIG. 3 , the first sub-pixel region 120 a is enabled to display, and the second sub-pixel region 120 b is enabled to display, so that the display device 100 is in the first display mode. In FIG. 4 , the first sub-pixel region 120 a is enabled to display, and the second sub-pixel region 120 b is stopped to display, so that the display device 100 is in the second display mode. In FIG. 5 , the first sub-pixel region 120a is stopped from displaying, and the second sub-pixel region 120b is enabled to display, so that the display device 100 is in the anti-peeping mode.

In the first display mode shown in FIG. 3, the scan lines SC (the first scan line SC1, the second scan line SC2, the first scan line SC1', and the second scan line SC2') will be sequentially provided with a turn-on signal ( That is, the first scan lines SC1, SC1' will be sequentially provided with turn-on signals, and the second scan lines SC2, SC2' will be sequentially provided with turn-on signals), so that the first sub-pixel region 120a and the second sub-pixel region 120b to display. In addition, in FIG. 3 , the first scan lines SC1 , SC1 ′ and the second scan lines SC2 , SC2 ′ may be alternately provided with enable signals, but not limited thereto.

In the second display mode shown in FIG. 4 , the first scan lines SC1 and SC1' will be sequentially provided with turn-on signals, and the second scan lines SC2 and SC2' will not be provided with turn-on signals, so that the first sub-pixel region 120a to display, and make the second sub-pixel region 120b stop displaying.

In the anti-peeping mode shown in FIG. 5 , the first scan lines SC1 and SC1 ′ will not be provided with turn-on signals, and the second scan lines SC2 and SC2 ′ will be sequentially provided with turn-on signals, so that the first sub-pixel region 120 a The display is stopped, and the second sub-pixel region 120b is displayed.

Please refer to FIG. 6 , which is a schematic top view of a transparent conductive layer of a display device according to another embodiment of the present invention. As shown in FIG. 6 , the difference between this embodiment and the embodiments shown in FIG. 1 and FIG. 2 is that the display device 200 of this embodiment is an IPS liquid crystal display device, therefore, the first electrode 122 of the first sub-pixel region 120a is connected to the The third electrode 126 is formed of the same conductive layer, and the second electrode 124 and the fourth electrode 128 of the second sub-pixel region 120b are formed of the same conductive layer. In FIG. 6 , the first electrode 122 , the second electrode 124 , the third electrode 126 and the fourth electrode 128 can be interdigitated electrodes, therefore, a part of the third electrode 126 is located in the first slit of the first electrode 122 In 122S, a part of the fourth electrode 128 is located in the second slit 124S of the second electrode 124 , but not limited thereto.

Similarly, the first slit 122S of the first electrode 122 and the slit of the third electrode 126 extend along the first slit direction Ds1, and the second slit 124S of the second electrode 124 extends along the slit of the fourth electrode 128. Extending along the second slit direction Ds2, and the first slit direction Ds1 is not parallel to the second slit direction Ds2, so that the direction of the electric field generated by the first electrode 122 and the third electrode 126 can be different from that of the second electrode 124 and the second electrode 124. The direction of the electric field generated by the four electrodes 128 (ie, the direction of the electric field on the first electrode 122 may be different from the direction of the electric field on the second electrode 124 ). According to the above design, the display device 200 (IPS liquid crystal display device) can present a good picture display effect in the display mode (the first display mode and/or the second display mode), and the display device 200 in the anti-peeping mode The display can have a good anti-peep effect.

In another embodiment (not shown), the display device can design the alignment directions of the alignment layers 130 and 132 so that the direction of the electric field on the first electrode 122 is different from the direction of the electric field on the second electrode 124 . In each sub-pixel structure, the region of the alignment layer 130 corresponding to the first sub-pixel region 120a and the region corresponding to the second sub-pixel region 120b have different alignment directions, and the region of the alignment layer 132 corresponding to the first sub-pixel region 120a and the region corresponding to the corresponding Regions of the second sub-pixel region 120b have different alignment directions. In the alignment layer 130 (and/or the alignment layer 132), the region corresponding to the first sub-pixel region 120a has a first alignment direction, the region corresponding to the second sub-pixel region 120b has a second alignment direction, and the first alignment direction does not parallel to the second alignment direction. Accordingly, the included angle between the slit direction of the first slit 122S of the first electrode 122 in the first sub-pixel region 120a and the first alignment direction of the alignment layer 130 (or alignment layer 132 ) is different from that of the second sub-pixel The included angle between the slit direction of the second slit 124S of the second electrode 124 in the region 120b and the second alignment direction of the alignment layer 130 (or alignment layer 132) makes the direction of the electric field on the first electrode 122 different from that of the first The direction of the electric field on the two electrodes 124 . In addition, in this case, the slit direction of the first slit 122S of the first electrode 122 of the first sub-pixel region 120a may be the same as or different from the second slit 124S of the second electrode 124 of the second sub-pixel region 120b. direction of the slit.

The components located in the peripheral area of the display device will be described below, and the connection relationship, operation relationship and driving method between the components located in the display area and the components located in the peripheral area of the display device will be described. It should be noted that the design of the display area of the display device described below may be any combination of at least part of one or more of the above-mentioned embodiments.

Please refer to FIG. 7 and FIG. 8. FIG. 7 shows a schematic top view of a display device according to an embodiment of the present invention, and FIG. 8 shows a sub-pixel structure, scanning lines and gate driving circuits of a display device according to an embodiment of the present invention. top view diagram. As shown in FIG. 7, the display device PD1 may further include a peripheral circuit disposed on the substrate 110 and located in the peripheral region PR (the peripheral region PR in FIG. 120 provides signals (such as switching signals, displaying grayscale signals) to enable the sub-pixel structure 120 to perform a picture display function.

In FIG. 7 , the peripheral circuit may include a gate driving circuit GDR and a source driving circuit SDR, wherein the gate driving circuit GDR is electrically connected to the scan line SC, and the source driving circuit SDR is electrically connected to the data line DA. The gate driving circuit GDR supplies switching signals to the switching elements through the scan line SC, and the source driving circuit SDR supplies display gray-scale signals to the switching elements through the data line DA. Therefore, when the switching elements are turned on by the switching signals, the pixel electrode Can receive display grayscale signal for screen display.

In the present invention, the arrangement of the gate driving circuit GDR and the source driving circuit SDR can be designed according to requirements. For example, in FIG. 7 , the gate driving circuit GDR can be disposed on one outer side of the display region AR, and the source driving circuit SDR can be disposed on the other outer side of the display region AR. In other embodiments, the gate driving circuit GDR and the source driving circuit SDR may also be disposed on the same side of the peripheral region PR, but not limited thereto.

The peripheral circuit may include a timing controller TC. The timing controller TC is electrically connected to the gate driving circuit GDR and the source driving circuit SDR, and is used for providing timing signals to the gate driving circuit GDR and the source driving circuit SDR. Therefore, the gate drive circuit GDR can generate a corresponding switching signal according to the timing signal and transmit it to the corresponding scanning line SC, and the source driving circuit SDR can generate a corresponding display grayscale signal according to the timing signal and transmit it to the corresponding data line da. In this embodiment, the timing signal provided by the timing controller TC in the display mode (the first display mode and/or the second display mode) is different from the timing signal provided by the timing controller TC in the anti-peeping mode, so that the display device PD1 can display differently in two modes.

The timing controller TC can generate a corresponding timing signal according to a predetermined timing code, so that the gate driving circuit GDR and the source driving circuit SDR can provide corresponding signals to the scanning line SC and the data line DA according to the timing code, thereby enabling The display device PD1 is in a display mode (the first display mode and/or the second display mode) or an anti-peeping mode. For example, the timing code may include a display timing code executed in a display mode and an anti-peep timing code executed in an anti-peeping mode, but not limited thereto.

Optionally, the peripheral circuit may include a memory unit MU, wherein the memory unit MU is electrically connected to the timing controller TC and used for storing timing codes. For example, in FIG. 7 , the memory unit MU is disposed outside the timing controller TC and electrically connected to the timing controller TC through wires, but not limited thereto. For example, the memory unit MU can be included in the timing controller TC, but not limited thereto. It should be noted that the memory unit MU can be, for example, a charge-erasable programmable read-only memory, a one-time programming memory, or other suitable memories.

As shown in FIG. 8, the scan line SC and the data line DA are electrically connected to the switching elements in the sub-pixel structure 120, wherein the scan line SC is electrically connected to the gate drive circuit GDR on the right side of the display area AR, so that the first scan line SC1_1, SC1_2 , SC1_3 , SC1_4 are electrically connected to the first switch element T1 of the first sub-pixel region 120 a, and the second scan lines SC2_1 , SC2_2 , SC2_3 , SC2_4 are electrically connected to the second switch element T2 of the second sub-pixel region 120 b.

Please refer to Fig. 3 to Fig. 5, Fig. 7, Fig. 8 and the driving method mentioned above. In Fig. 7 and Fig. 8, since the gate driving circuit GDR is located on the right side of the display area AR, the gate driving circuit GDR is The right side of the area AR provides switching signals to the scanning lines SC, so that the scanning lines SC input switching signals to the first switching element T1 and the second switching element T2 in the display area AR from the right side of the display area AR. According to the first display mode (as shown in FIG. 3 ), the gate driving circuit GDR of FIG. 8 can sequentially provide a turn-on signal to the scan lines SC, so that the scan lines SC can be displayed on the same side (eg, the right side) of the display area AR. The first switch element T1 and the second switch element T2 in the area AR input the turn-on signal, so that the first sub-pixel area 120 a and the second sub-pixel area 120 b display. In FIG. 8 , the gate drive circuit GDR can alternately provide turn-on signals to the first scan lines SC1_1, SC1_2, SC1_3, SC1_4 and the second scan lines SC2_1, SC2_2, SC2_3, SC2_4, so that the first scan lines SC1_1, SC1_2, The SC1_3 , SC1_4 and the second scan lines SC2_1 , SC2_2 , SC2_3 , SC2_4 can alternately input the turn-on signal to the display area AR, but not limited thereto.

According to the second display mode (as shown in Figure 4), the gate drive circuit GDR in Figure 8 can sequentially provide turn-on signals to the first scan lines SC1_1, SC1_2, SC1_3, SC1_4, and not to the second scan lines SC2_1, SC2_2, SC2_3, SC2_4 provides the turn-on signal, so that the first scan lines SC1_1, SC1_2, SC1_3, SC1_4 can input the turn-on signal to the first switch element T1 in the display area AR from the same side (eg, the right side) of the display area AR, so that the first The sub-pixel region 120a performs display, and makes the second sub-pixel region 120b stop displaying.

According to the anti-peeping mode (as shown in Figure 5), the gate drive circuit GDR in Figure 8 may not provide the turn-on signal to the first scan lines SC1_1, SC1_2, SC1_3, SC1_4, and sequentially to the second scan lines SC2_1, SC2_2, SC2_3, SC2_4 The start signal is provided so that the second scan lines SC2_1, SC2_2, SC2_3, SC2_4 can input the start signal to the second switching element T2 in the display area AR from the same side (eg, the right side) of the display area AR, so that the first sub The pixel area 120a stops displaying, and enables the second sub-pixel area 120b to display.

Please refer to FIG. 9 and FIG. 10. FIG. 9 is a schematic top view of a display device according to an embodiment of the present invention, and FIG. 10 shows a sub-pixel structure, scanning lines and gate driving circuits of a display device according to an embodiment of the present invention. top view diagram. Compared with the structure described in FIG. 7 and FIG. 8 , the gate drive circuit GDR of the display device PD2 of this embodiment includes a first gate drive circuit part GDR1 and a second gate drive circuit part GDR2 , the first gate drive circuit part GDR2 The circuit part GDR1 and the second gate driving circuit part GDR2 are respectively disposed on opposite sides of the display area AR (for example, left and right sides of the display area AR), and are electrically connected to different scan lines SC respectively. For example, in FIG. 10, the first gate driving circuit part GDR1 can be electrically connected to the first scanning lines SC1_1, SC1_2, SC1_3, SC1_4, and the second gate driving circuit part GDR2 can be electrically connected to the second scanning lines SC2_1 and SC2_2. , SC2_3, SC2_4, but not limited thereto.

Please refer to FIG. 3 to FIG. 5, FIG. 9, FIG. 10 and the above-mentioned driving methods. In FIG. 9 and FIG. The circuit GDR provides switching signals to the scanning line SC from the left and right sides of the display area AR, so that the scanning line SC is connected to the first switching element T1 and the second switching element in the display area AR from the left and right sides of the display area AR. T2 input switch signal. According to the first display mode (as shown in Figure 3), the gate drive circuit GDR of FIG. 10 can sequentially provide turn-on signals to the scan lines SC, so that the first scan lines SC1_1, SC1_2, SC1_3, and SC1_4 are connected by the first side of the display area AR. (for example, the left side of the display area AR) input the start signal to the first switch element T1 of the display area AR, the second scan lines SC2_1, SC2_2, SC2_3, SC2_4 from the second side of the display area AR (for example, the display area AR The right side of AR) inputs the turn-on signal to the second switching element T2 of the display area AR, so that the first sub-pixel area 120 a and the second sub-pixel area 120 b display.

In FIG. 10 , the gate drive circuit GDR can alternately provide turn-on signals to the first scan lines SC1_1, SC1_2, SC1_3, SC1_4 and the second scan lines SC2_1, SC2_2, SC2_3, SC2_4, so that the first scan lines SC1_1, SC1_2, SC1_3 , SC1_4 and the second scan lines SC2_1 , SC2_2 , SC2_3 , SC2_4 can alternately input the turn-on signal to the display area AR. For example, the gate driving circuit GDR may first provide the turn-on signal to the first scan line SC1_1, then provide the turn-on signal to the second scan line SC2_1, and then provide the turn-on signal to the first scan line SC1_2, and so on, but not This is the limit. For example, the gate driving circuit GDR may first provide the turn-on signal to the second scan line SC2_1, then provide the turn-on signal to the first scan line SC1_1, and then provide the turn-on signal to the second scan line SC2_2, and so on, but not This is the limit.

According to the second display mode (as shown in FIG. 4 ), the gate drive circuit GDR of FIG. 10 can sequentially provide turn-on signals to the first scan lines SC1_1, SC1_2, SC1_3, and SC1_4, and not to the second scan lines SC2_1, SC2_2, SC2_3, SC2_4 provides the turn-on signal, so that the first scan lines SC1_1, SC1_2, SC1_3, SC1_4 can input the turn-on signal to the first switch element T1 in the display area AR from the first side (eg, left side) of the display area AR, so that the first The sub-pixel region 120a performs display, and makes the second sub-pixel region 120b stop displaying.

According to the anti-peeping mode (as shown in Figure 5), the gate drive circuit GDR of FIG. The turn-on signal is provided so that the second scan lines SC2_1, SC2_2, SC2_3, SC2_4 can input the turn-on signal to the second switch element T2 in the display region AR from the second side (eg, the right side) of the display region AR, so that the first sub The pixel area 120a stops displaying, and enables the second sub-pixel area 120b to display.

In addition, compared with the structures described in FIGS. 7 and 8 , the timing controller TC of the display device PD2 (as shown in FIG. 9 ) of this embodiment can be included in the source driving circuit SDR, and the memory unit MU can be included in the timing controller. within the controller TC, but not limited thereto.

Please refer to FIG. 11 . FIG. 11 is a schematic top view of a sub-pixel structure, scan lines and gate driving circuits of a display device according to an embodiment of the present invention. Compared with the structure described in FIG. 10 , the first gate driving circuit part GDR1 of the gate driving circuit GDR of the display device PD2' of this embodiment can be electrically connected to the second gate driving circuit part GDR2 through the scanning line SC, and also That is to say, each scan line SC may be electrically connected to the first gate driving circuit part GDR1 and the second gate driving circuit part GDR2 at opposite sides thereof. Therefore, both the first gate driving circuit part GDR1 and the second gate driving circuit part GDR2 are electrically connected to the first scanning lines SC1_1 , SC1_2 , SC1_3 , SC1_4 and the second scanning lines SC2_1 , SC2_2 , SC2_3 , SC2_4 .

Please refer to FIG. 3 to FIG. 5, FIG. 11 and the above-mentioned driving method. In FIG. 11, since the gate driving circuit GDR is located on the left and right sides of the display area AR, the gate driving circuit GDR is driven The left and right sides of the display area AR provide switching signals to the scanning line SC, so that the scanning line SC inputs switching signals to the first switching element T1 and the second switching element T2 in the display area AR from the left and right sides of the display area AR. According to the first display mode (as shown in FIG. 3 ), the gate drive circuit GDR of FIG. 11 can sequentially provide the scan lines SC with turn-on signals, so that the scan lines SC are simultaneously connected by the opposite sides of the display area AR (for example, the display area AR). Left side and right side) input the turn-on signal to the first switch element T1 and the second switch element T2 of the display area AR, so that the first sub-pixel area 120a and the second sub-pixel area 120b display. Similarly, in FIG. 11 , the gate drive circuit GDR can alternately provide turn-on signals to the first scan lines SC1_1, SC1_2, SC1_3, SC1_4 and the second scan lines SC2_1, SC2_2, SC2_3, SC2_4, so that the first scan line SC1_1 , SC1_2 , SC1_3 , SC1_4 and the second scan lines SC2_1 , SC2_2 , SC2_3 , SC2_4 can alternately input a turn-on signal to the display area AR.

According to the second display mode (as shown in Figure 4), the gate drive circuit GDR of FIG. SC2_4 provides the turn-on signal, so that the first scan lines SC1_1, SC1_2, SC1_3, and SC1_4 can be connected to the first switching element in the display area AR by the opposite sides of the display area AR (eg, the left and right sides of the display area AR) at the same time. T1 inputs a turn-on signal to enable the first sub-pixel region 120a to display and stop the second sub-pixel region 120b to display.

According to the anti-peeping mode (as shown in Figure 5), the gate drive circuit GDR of FIG. The turn-on signal is provided so that the second scan lines SC2_1, SC2_2, SC2_3, and SC2_4 can be simultaneously connected to the second switching element T2 in the display area AR by opposite sides of the display area AR (eg, the left and right sides of the display area AR). The turn-on signal is input so that the first sub-pixel region 120a stops displaying and the second sub-pixel region 120b performs displaying. Since the signal of the scanning line SC is simultaneously input to the switching elements in the display area AR from the opposite sides of the display area AR, the adjacent display The difference between the turn-on signals received by the switch elements on the left edge of the area AR and the turn-on signals received by the switch elements adjacent to the right edge of the display area AR is smaller, so as to improve the quality of the display image.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (18)

1. A display device having a display area and a peripheral area located on at least one outer side of the display area, wherein the display device comprises:

a substrate;

a plurality of sub-pixel structures disposed on the substrate and within the display area, wherein at least one of the sub-pixel structures comprises:

a first sub-pixel region including a first switch element and a first electrode; and

a second sub-pixel region including a second switch element and a second electrode;

a plurality of scan lines disposed on the substrate, wherein the plurality of scan lines include a plurality of first scan lines and a plurality of second scan lines, one of the plurality of first scan lines is electrically connected to at least one of the first switching elements, and one of the plurality of second scan lines is electrically connected to at least one of the second switching elements;

a display medium layer arranged on the plurality of sub-pixel structures;

the alignment layer is arranged between the plurality of sub-pixel structures and the display medium layer; and

a peripheral circuit disposed on the substrate and in the peripheral region, wherein the peripheral circuit includes:

a grid driving circuit electrically connected with the plurality of scanning lines; and

the time schedule controller is electrically connected with the grid driving circuit;

wherein a direction of an electric field on the first electrode is different from a direction of an electric field on the second electrode.

2. The display device as claimed in claim 1, wherein when the first sub-pixel region and the second sub-pixel region are displayed with a maximum display gray scale signal, a ratio of the luminance of the second sub-pixel region to the luminance of the first sub-pixel region is less than or equal to 0.7.

3. The display device according to claim 1, wherein a region of the alignment layer corresponding to the first sub-pixel region and a region of the alignment layer corresponding to the second sub-pixel region have the same alignment direction, the first electrode has at least one first slit extending along a first slit direction, the second electrode has at least one second slit extending along a second slit direction, and the first slit direction is not parallel to the second slit direction.

4. The display device according to claim 3, wherein the first slit direction has a first angle with the alignment direction, the second slit direction has a second angle with the alignment direction, and the first angle is smaller than the second angle.

5. The display device as claimed in claim 1, wherein when the first sub-pixel region and the second sub-pixel region are displaying with a maximum display gray scale signal, a viewing angle caused by the second sub-pixel region is smaller than a viewing angle caused by the first sub-pixel region.

6. The display device of claim 1, further comprising:

a plurality of data lines disposed on the substrate, one of the plurality of data lines electrically connecting at least one of the first switching elements and at least one of the second switching elements;

the peripheral circuit further comprises a source electrode driving circuit, and the source electrode driving circuit is electrically connected with the data lines and the time sequence controller.

7. The display device according to claim 6, wherein the timing controller is included in the source driving circuit.

8. The display device according to claim 1, wherein the gate driving circuit comprises a first gate driving circuit portion and a second gate driving circuit portion, the first gate driving circuit portion and the second gate driving circuit portion are respectively disposed at opposite sides of the display region, the first gate driving circuit portion is electrically connected to the first scanning lines, and the second gate driving circuit portion is electrically connected to the second scanning lines.

9. The display device according to claim 1, wherein the peripheral circuit further comprises a memory unit electrically connected to the timing controller for storing a timing code, wherein the timing controller provides timing signals to the gate driving circuit according to the timing code.

10. A method of driving a display device, comprising:

providing a display device having a display area and a peripheral area located on at least one outer side of the display area, wherein the display device comprises:

a substrate;

a plurality of sub-pixel structures disposed on the substrate and within the display area, wherein at least one of the sub-pixel structures comprises:

a first sub-pixel region including a first switch element and a first electrode; and

a second sub-pixel area including a second switching element and a second electrode, wherein the direction of the electric field on the first electrode is different from the direction of the electric field on the second electrode;

a plurality of scan lines disposed on the substrate, wherein the plurality of scan lines includes a plurality of first scan lines and a plurality of second scan lines, one of the plurality of first scan lines is electrically connected to at least one of the first switching elements, and one of the plurality of second scan lines is electrically connected to at least one of the second switching elements;

a display medium layer arranged on the plurality of sub-pixel structures; and

the alignment layer is arranged between the plurality of sub-pixel structures and the display medium layer;

displaying the first sub-pixel area to enable the display device to be in a display mode; and

and stopping displaying the first sub-pixel area, and displaying the second sub-pixel area so as to enable the display device to be in a peep-proof mode.

11. The method according to claim 10, wherein when the display device is in the display mode, the plurality of scan lines are sequentially supplied with an on signal to display the first sub-pixel area and the second sub-pixel area, wherein the plurality of scan lines input the on signal to the display area from a same side of the display area.

12. The method for driving a display device according to claim 10, wherein when the display device is in the display mode,

sequentially providing start signals to the first scan lines to display the first sub-pixel regions, and

sequentially providing opening signals for the second scanning lines to display the second sub-pixel region,

the plurality of first scanning lines input the starting signal to the display area from a first side of the display area, the plurality of second scanning lines input the starting signal to the display area from a second side of the display area, and the first side and the second side are opposite to each other.

13. The method for driving a display device according to claim 12, wherein the plurality of first scan lines and the plurality of second scan lines alternately input the turn-on signal to the display region.

14. The method according to claim 10, wherein when the display device is in the display mode, the plurality of scan lines are sequentially provided with turn-on signals to display the first sub-pixel region and the second sub-pixel region, and wherein the plurality of scan lines simultaneously input the turn-on signals to the display region from two opposite sides of the display region.

15. The method for driving a display device according to claim 10, wherein when the display device is in the display mode,

sequentially providing start signals to the first scan lines to display the first sub-pixel region, and

no start signal is provided for the plurality of second scanning lines to stop displaying the second sub-pixel regions,

the plurality of first scanning lines input the starting signal to the display area from the same side of the display area.

16. The method for driving a display device according to claim 10, wherein when the display device is in the display mode,

sequentially providing start signals to the first scan lines to display the first sub-pixel region, and

no start signal is provided for the plurality of second scanning lines to stop the display of the second sub-pixel areas,

the plurality of first scanning lines simultaneously input the starting signals to the display area from two opposite sides of the display area.

17. The method for driving a display device according to claim 10, wherein when the display device is in the peep prevention mode,

not providing start signals to the first scan lines to stop the display of the first sub-pixel region, an

Sequentially providing opening signals for the second scanning lines to display the second sub-pixel region,

the plurality of second scanning lines input the starting signal to the display area from the same side of the display area.

18. The method for driving a display device according to claim 10, wherein when the display device is in the peep prevention mode,

not providing start signals to the first scan lines to stop the display of the first sub-pixel region, an

Sequentially providing opening signals for the second scanning lines to display the second sub-pixel region,

and the plurality of second scanning lines simultaneously input the starting signals to the display area from two opposite sides of the display area.

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