CN109979385A - Display driving method, display drive apparatus and the display device of display panel - Google Patents
Display driving method, display drive apparatus and the display device of display panel Download PDFInfo
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/2007—Display of intermediate tones
- G09G3/2074—Display of intermediate tones using sub-pixels
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0257—Reduction of after-image effects
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Abstract
The embodiment of the invention discloses a kind of display driving method of display panel, display drive apparatus and display devices.This method comprises: the display grayscale of next sub-pixel unit of the display picture in at least one color in pre-set image viewing area is all larger than the first setting value with absolute value of the picture in the difference of the display grayscale of the corresponding sub-pixel unit in pre-set image viewing area is currently shown, the absolute value of next display picture difference of the display grayscale of the sub-pixel unit of same color in the sub-pixel unit of at least one color of pre-set image viewing area is respectively less than or is equal to the second setting value, current display picture is in the display grayscale of the sub-pixel unit of at least one color of the first subregion and current display picture when the absolute value of the difference of the display grayscale of the sub-pixel unit of the second subregion same color is all larger than third setting value, next display picture of pre-set image viewing area is divided at least two son display pictures.Present invention improves the ghosts of display panel.
Description
Technical Field
Embodiments of the present invention relate to display technologies, and in particular, to a display driving method, a display driving apparatus, and a display apparatus for a display panel.
Background
An Organic Light Emitting Diode (OLED) display panel is a self-luminous display panel, and the OLED display panel is increasingly used in various high-performance display fields due to its advantages of lightness, thinness, high brightness, wide viewing angle, high response speed, and wide temperature range.
The problem that the afterimage is easy to appear in the display process of the OLED display panel is a research and development subject of long-term attention in the display panel industry.
Disclosure of Invention
The invention provides a display driving method, a display driving device and a display device of a display panel, which are used for improving the ghost of the display panel and improving the picture display quality.
In a first aspect, an embodiment of the present invention provides a display driving method for a display panel, including:
acquiring a next display picture and a current display picture of a display panel;
comparing the next display frame with the current display frame; when the display panel comprises at least one preset image display area, the preset image display area comprises a first sub-area and a second sub-area, the first sub-area comprises at least one two pixel units, the second sub-area comprises at least one pixel unit, and each pixel unit comprises at least three sub-pixel units with different colors; the absolute value of the difference value between the display gray scale of the sub-pixel unit of at least one color in the preset image display area of the next display picture and the display gray scale of the sub-pixel unit corresponding to the preset image display area of the current display picture is larger than a first set value, and the absolute values of the display gray scale differences of the sub-pixel units of the same color in the sub-pixel units of the at least one color in the preset image display area of the next display picture are all less than or equal to a second set value, and when the absolute value of the difference between the display gray scale of the sub-pixel unit of the at least one color in the first sub-region of the current display picture and the display gray scale of the sub-pixel unit of the same color in the second sub-region of the current display picture is greater than a third set value, dividing the next display picture of the preset image display area into at least two sub-display pictures; wherein the third set value is greater than the first set value;
when the display of the current display picture is finished, driving the display panel to sequentially switch and display the at least two sub-display pictures; wherein, (A1j + A2j … … + Anj)/n ═ Aj, where Anj is the display brightness of the jth sub-pixel unit of the nth sub-display frame in the preset image display area, n is an integer greater than or equal to 2, Aj is the target display brightness of the jth sub-pixel unit of the next display frame, and when Aj is the target display brightness of one sub-pixel unit in the sub-pixel unit of the at least one color, A1j, A2j … …, and Anj are not equal to Aj.
Optionally, the first sub-region is adjacent to the second sub-region.
Optionally, the display frequency of the at least two sub-display frames is greater than or equal to the display frequency of the current display frame.
Optionally, the third setting value is equal to zero, the preset image display area is set to include at least one pixel group, each pixel group includes at least two pixel units, and (a1+ a2+ … … Am)/m ═ Aq, where Am is display luminance of an mth sub-pixel unit of the same color in each pixel group of the preset image display area of the ith sub-display picture, Aq is preset display luminance of a sub-pixel unit of the color in each pixel group of the preset image display area of the ith sub-display picture, and a1, a2, … …, and Am are not equal to Aq, where m is an integer greater than or equal to 2.
Optionally, at least two pixel units in each of the pixel groups are sequentially arranged along a first direction and/or a second direction, where the first direction and the second direction are mutually intersected.
Optionally, along the first direction and/or the second direction, arrangement modes of at least two pixel units in adjacent pixel groups are different.
Optionally, at least two pixel units in each pixel group are sequentially arranged along the first direction, a plurality of pixel groups are sequentially arranged along the first direction, and the arrangement modes of the pixel units in adjacent pixel groups are different along the second direction; or,
at least two pixel units in each pixel group are sequentially arranged along the second direction, a plurality of pixel groups are sequentially arranged along the second direction, and the arrangement modes of the pixel units in the adjacent pixel groups are different along the first direction.
Optionally, dividing the next display frame of the preset image display area into at least two sub-display frames, including:
and determining the display gray scale of each sub-pixel unit of each sub-display picture according to a display compensation table.
In a second aspect, an embodiment of the present invention further provides a display driving apparatus, including:
the image acquisition module is used for acquiring a next display picture and a current display picture of the display panel;
the comparison module is used for comparing the next display picture with the current display picture; when the display panel comprises at least one preset image display area, the preset image display area comprises a first sub-area and a second sub-area, the first sub-area comprises at least one pixel unit, the second sub-area comprises at least one pixel unit, and each pixel unit comprises at least three sub-pixel units with different colors; the absolute value of the difference value between the display gray scale of the sub-pixel unit of at least one color in the preset image display area of the next display picture and the display gray scale of the sub-pixel unit corresponding to the preset image display area of the current display picture is larger than a first set value, and the absolute values of the display gray scale differences of the sub-pixel units of the same color in the sub-pixel units of the at least one color in the preset image display area of the next display picture are all less than or equal to a second set value, and when the absolute value of the difference between the display gray scale of the sub-pixel unit of the at least one color in the first sub-region of the current display picture and the display gray scale of the sub-pixel unit of the same color in the second sub-region of the current display picture is greater than a third set value, dividing the next display picture of the preset image display area into at least two sub-display pictures; wherein the third set value is greater than the first set value;
the display driving module is used for driving the display panel to sequentially switch and display the at least two sub-display pictures when the display of the current display picture is finished; wherein, (A1j + A2j … … + Anj)/n ═ Aj, where Anj is the display brightness of the jth sub-pixel unit of the nth sub-display frame in the preset image display area, n is an integer greater than or equal to 2, Aj is the target display brightness of the jth sub-pixel unit of the next display frame, and when Aj is the target display brightness of one sub-pixel unit in the sub-pixel unit of the at least one color, A1j, A2j … …, and Anj are not equal to Aj.
In a third aspect, an embodiment of the present invention further provides a display device, including a display panel and the display driving device according to any embodiment of the present invention.
According to the embodiment of the invention, the next display picture is split into at least two sub-display pictures, namely the target display brightness of the next display picture is obtained by mixing A1j, A2j … … and Anj, and A1j, A2j … … and Anj are not equal to Aj, so that the display brightness of each sub-pixel unit can be selected to be darker and brighter relative to Aj according to needs.
Drawings
Fig. 1 is a flowchart of a display driving method of a display panel according to an embodiment of the present invention;
FIG. 2 is a diagram of a pixel group according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of another pixel group provided by an embodiment of the invention;
fig. 4 is a schematic diagram of a display driving apparatus according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a display device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
As the OLED display panel mentioned in the background art is prone to image sticking during the picture display process, the inventors have studied and found that the reason for this problem is: the driving transistor of each sub-pixel of the display panel is operated in a saturation state to drive the sub-pixel to emit light. When the display panel displays a picture with larger gray scale difference for a longer time and then switches to a picture with another intermediate gray scale, the driving current of the light-emitting device is different due to different initial gate-source voltages of the driving transistors in the picture with larger gray scale difference in the OLED display panel, so that the picture of the original picture is left in the process of converting the picture with larger gray scale difference into the gray scale picture, a short-term afterimage phenomenon is caused, and the display effect is seriously influenced. For example, when the display panel is switched to a picture with an intermediate gray scale after a picture with black and white alternating for a long time, a black and white image is left on the picture with the intermediate gray scale, that is, a residual image exists. In order to solve the above technical problem, the present application provides the following solutions:
fig. 1 is a flowchart of a display driving method of a display panel according to an embodiment of the present invention, and with reference to fig. 1, the method includes:
and step 110, acquiring a next display picture and a current display picture of the display panel.
The current display screen is a screen currently being displayed by the display panel, and the next display screen is a next screen to be displayed by the display panel.
And step 120, comparing the next display frame with the current display frame. When the display panel comprises at least one preset image display area, the preset image display area comprises a first sub-area and a second sub-area, the first sub-area comprises at least one pixel unit, the second sub-area comprises at least one pixel unit, and each pixel unit comprises at least three sub-pixel units with different colors; the absolute value of the difference value between the display gray scale of the sub-pixel unit of at least one color in the preset image display area of the next display picture and the display gray scale of the sub-pixel unit corresponding to the preset image display area of the current display picture is larger than a first set value, and the absolute values of the display gray scale differences of the sub-pixel units of the same color in the sub-pixel units of the at least one color in the preset image display area of the next display picture are all less than or equal to a second set value, and when the absolute value of the difference between the display gray scale of the sub-pixel unit of the at least one color in the first sub-region of the current display picture and the display gray scale of the sub-pixel unit of the same color in the second sub-region of the current display picture is greater than a third set value, dividing the next display picture of the preset image display area into at least two sub-display pictures; wherein the third setting value is greater than the first setting value.
The preset image display area may be in any shape, for example, a rectangle, a polygon, a circle, a ring, or an arc. The display panel may include one preset image display region or a plurality of preset image display regions. The first setting value is positive, the magnitude of the first setting value may be determined according to the characteristics of the driving transistor in the display panel, and the magnitude of the first setting value may be greater than or equal to 32 gray levels, for example. The sub-pixel units of at least one color may be a red sub-pixel unit, a green sub-pixel unit, and a blue sub-pixel unit. The absolute value of the difference value between the display gray scale of the sub-pixel unit of at least one color of the next display picture in the preset image display area and the display gray scale of the sub-pixel unit corresponding to the current display picture in the preset image display area is larger than a first set value, namely, the difference between the gray scales of the sub-pixel unit of at least one color of the next display picture and the current display picture is larger, and when the current display picture is switched to the next display picture, the brightness deviation is easy to occur.
For example, taking a red sub-pixel unit as an example, when the absolute value of the difference between the display gray scale of the red sub-pixel unit of the next display frame in the preset image display area and the display gray scale of the red sub-pixel unit corresponding to the current display frame in the preset image display area is greater than the first set value, because the display gray scale difference between the current display frame and the red sub-pixel unit of the next display frame is greater, the red sub-pixel unit is prone to have a luminance deviation when displaying the next display frame.
The absolute value of the difference value of the display gray scale of the sub-pixel units of the same color in the sub-pixel units of the at least one color in the preset image display area of the next display picture is smaller than or equal to a second set value, that is, the difference of the display gray scale between the sub-pixel units of the same color in the sub-pixel units of the at least one color in the next display picture is smaller, and the target display brightness value of each sub-pixel unit is close. The second setting value is greater than or equal to zero, and the magnitude of the second setting value can be determined according to the characteristics of the driving transistor of the display panel, as long as the display gray scale difference of the sub-pixel units of the same color in the sub-pixel units of the at least one color in the preset image display area is ensured to be small. For example, the second setting value may be zero, and at this time, the display gray scales of the sub-pixel units of the same color in the sub-pixel units of the at least one color in the preset image display area are the same, and the target display brightness is the same. For example, when the absolute value of the difference between the display gray scales of the red sub-pixel units in the preset image display area of the next display frame is smaller than or equal to the second set value, the difference between the display gray scales of the red sub-pixel units in the next display frame is smaller, and the target display luminance value of each red sub-pixel unit is close to the target display luminance value.
In addition, when the absolute value of the difference between the display gray scale of the sub-pixel unit of the at least one color in the first sub-region of the current display picture and the display gray scale of the sub-pixel unit of the same color in the second sub-region of the current display picture is greater than the third set value, that is, the difference between the display gray scale of the first sub-region and the display gray scale of the second sub-region is greater, when the current display picture is switched to the next display picture, the type of the residual image of the current display picture in the first sub-region is different from that in the second sub-region, or a residual image exists in one of the first sub-region and the second sub-region, and no residual image exists in the one of the first sub-region and. For example, the first sub-region is relatively dark in brightness relative to the target display brightness of the next display screen, and the second sub-region is relatively bright in brightness relative to the target display brightness of the next display screen, or the first sub-region is relatively bright in brightness relative to the target display brightness of the next display screen, and the second sub-region is relatively dark in brightness relative to the target display brightness of the next display screen, or the first sub-region is relatively dark or relatively bright in brightness relative to the target display brightness of the next display screen, and the display brightness of the second sub-region is equal to the target display brightness, so that human eyes can more easily recognize the afterimage due to the contrast between light and dark, and the image display quality of the display panel is.
The third setting value is a positive number, and the magnitude of the third setting value may be determined according to the characteristics of the driving transistor in the display panel. Exemplary third set points may be greater than or equal to 128, such as 130, 150, or 200, etc.
And step 130, when the display of the current display picture is finished, driving the display panel to sequentially switch and display at least two sub display pictures. Wherein, (A1j + A2j … … + Anj)/n ═ Aj, where Anj is the display brightness of the jth sub-pixel unit of the nth sub-display frame in the preset image display area, n is an integer greater than or equal to 2, Aj is the target display brightness of the jth sub-pixel unit of the next display frame, and when Aj is the target display brightness of one sub-pixel unit in the sub-pixel unit of the at least one color, A1j, A2j … …, and Anj are not equal to Aj.
Specifically, as the darker or brighter display image is, the less the human eye can recognize the brightness difference, the next display image is split into at least two sub-display images, that is, the target display brightness of the next display image is obtained by mixing A1j, A2j … … and Anj, and A1j, A2j … … and Anj are not equal to Aj, the display brightness of each sub-pixel unit can be selected as required to be darker and brighter values relative to Aj, so that the afterimage of each sub-display image is weaker relative to the next display image, and the next display image is obtained by rapidly switching a plurality of sub-display images, so that the human eye can not recognize the afterimage, and the image display quality of the display panel is improved.
For example, when the next display frame needs to display a 48-gray-scale image, that is, the display gray scales of the sub-pixels in the preset image display area are all 48 gray scales, the current display frame is a black frame in the first sub-area, the second sub-area is a white frame, that is, the display gray scales of the sub-pixel units in the first sub-area of the current display frame are all 0 gray scales, and the display gray scales of the sub-pixel units in the second sub-area are all 255 gray scales, at this time, the next display frame can be divided into two sub-display frames, the two sub-display frames can be respectively a gray scale frame with 12 gray scales and a gray scale frame with 128 gray scales, since the residual shadow when the black-white frame is switched to the 12 gray scales and the 128 gray scales is weaker than the 48 gray scales, and the mixed brightness of the 12 gray scales and the 128 gray scales is the target display brightness of 48 gray scales, the ghost shadow of the display panel is weakened, and the picture display quality of the display panel is improved.
In addition, the next display frame can be divided into 4 sub-display frames of 12 gray scales, 16 gray scales, 64 gray scales and 128 gray scales.
In this embodiment, the next display picture is split into at least two sub-display pictures, that is, the target display brightness of the next display picture is obtained by mixing A1j, A2j … …, and Anj, and A1j, A2j … …, and Anj are not equal to Aj, so that the display brightness of each sub-pixel unit can be selected to be darker and brighter relative to Aj as needed, and as the display picture is darker or brighter, human eyes cannot recognize the brightness difference, so that the afterimage of each sub-display picture is weaker relative to the next display picture, and the next display picture is obtained by rapidly switching a plurality of sub-display pictures, so that human eyes cannot recognize the afterimage, and the picture display quality of the display panel is improved.
Optionally, dividing the next display frame of the preset image display area into at least two sub-display frames, including:
and determining the display gray scale of each sub-pixel unit of each sub-display picture according to a display compensation table.
Specifically, the display compensation table stores display gray scale values of at least two sub-display frames corresponding to the display gray scale of the current display frame and the display gray scale of the next display frame. The display gray scale of the current display picture and the display gray scale of at least two sub-display pictures corresponding to the display gray scale of the next display picture can be rapidly determined by searching the display compensation table, and the compensation speed is improved.
It should be noted that the display compensation table may be determined according to the characteristics of the driving transistors of the display panel, each sub-pixel unit may be provided with one display compensation table, or a plurality of sub-pixel units may share one display compensation table, or when the characteristics of the driving transistors of the sub-pixels of the display panel are not greatly different, only one display compensation table is provided for the whole panel.
Optionally, the first sub-region is adjacent to the second sub-region.
Specifically, when the first sub-area is adjacent to the second sub-area, the human eyes can more easily recognize the display brightness difference between the first sub-area and the second sub-area, namely, the human eyes can more easily recognize the reaction, at the moment, the human eyes can be further ensured not to recognize the ghost image by splitting the next display image into at least two sub-display images, and the image display quality is improved.
Optionally, the display frequency of the at least two sub-display frames is greater than or equal to the display frequency of the current display frame.
Specifically, the arrangement enables human eyes to be unable to recognize the switching process of at least two sub-display pictures, and improves the picture display quality. For example, when the display frequency of the current display screen is large, the display frequencies of at least two sub display screens can be set to be equal to the display frequency of the current display screen, and the driving timing sequence of the panel does not need to be changed while ensuring that the switching process of the sub display screens cannot be identified by human eyes. When the display frequency of the current display picture is smaller, in order to ensure that human eyes cannot recognize the switching process of the sub display picture, the display frequency of the sub display picture can be set to be larger than that of the current display picture.
The display frequency, that is, the screen switching frequency of the display panel, may be 60Hz as an exemplary display frequency.
Optionally, the third setting value is equal to zero, the preset image display area is set to include at least one pixel group, each pixel group includes at least two pixel units, each pixel unit includes at least three sub-pixel units of different colors, and (a1+ a2+ … … Am)/m is Aq, where Am is a display luminance of an mth sub-pixel unit of a same color in each pixel group of the preset image display area of an ith sub-display picture, Aq is a preset display luminance of the sub-pixel unit of the color in each pixel group of the preset image display area of the ith sub-display picture, and a1, a2, … …, and Am are not equal to Aq, where m is an integer greater than or equal to 2.
Specifically, if the third setting value is equal to zero, the next display frame is a pure color frame in the preset image display area, and each sub-display frame is a pure color frame. Because the darker or brighter display image is, the less the human eye can recognize the brightness difference, by setting the sub-pixel units of the same color in the pixel group to different display gray scales, and setting the mixed color brightness of the display brightness of each sub-pixel unit to be equal to the preset display brightness of the sub-pixel unit of the color in the pixel group, where a1, a2, … … and Am are not equal to Aq, a1, a2, … … and Am can select the brighter or darker display brightness relative to Aq, the afterimage of each sub-pixel unit is weaker, and the afterimage of each sub-display image is weaker, the next display image obtained by quickly switching a plurality of sub-display images is further prevented from being recognized by the human eye, and the image display quality of the display panel is improved.
It should be noted that, the preset display brightness of the sub-pixel unit of the color in each pixel group of the ith sub-display image in the preset image display area is that when the next display image is split into at least two sub-display images, the display brightness of the ith sub-display image allocated to the sub-pixel unit is obtained.
Fig. 2 is a schematic diagram of a pixel group according to an embodiment of the present invention, and fig. 3 is a schematic diagram of another pixel group according to an embodiment of the present invention. Alternatively, referring to fig. 2 and 3, at least two pixel units in each pixel group 10 are sequentially arranged along a first direction X and/or a second direction Y, where the first direction X and the second direction Y intersect with each other.
Specifically, referring to fig. 2, the pixel group 10 includes a first pixel unit 11, a second pixel unit 12, and a third pixel unit 13, and the first pixel unit 11, the second pixel unit 12, and the third pixel unit 13 are sequentially arranged along the first direction X.
Referring to fig. 3, the pixel group 10 includes a first pixel unit 11, a second pixel unit 12, a third pixel unit 13, and a fourth pixel unit 14, and the first pixel unit 11, the second pixel unit 12, the third pixel unit 13, and the fourth pixel unit 14 are arranged in a matrix.
It should be noted that fig. 2 and fig. 3 only exemplarily show a case that the pixel group 10 includes three pixel units and four pixel units, and the present invention is not limited thereto, and in other embodiments, the pixel group 10 may further include 2 or more pixel units, and each pixel unit may also be arranged in other forms. And fig. 2 only exemplarily shows a case where at least two pixel units are arranged in the first direction X, and a case where at least two pixel units are arranged in the second direction is similar to fig. 2.
For example, when each pixel unit includes a red sub-pixel unit, a green sub-pixel unit, and a blue sub-pixel unit, referring to fig. 3, when the required display gray scale of the red sub-pixel unit of each pixel unit in the pixel group 10 is 48, the display gray scales of the red sub-pixel units of the first pixel unit 11, the second pixel unit 12, the third pixel unit 13, and the fourth pixel unit 14 may be set to be 12, 16, 64, and 128, respectively, and the brightness corresponding to the 48 gray scales is mixed by four display gray scales of 12, 16, 64, and 128.
Optionally, along the first direction X and/or the second direction Y, the arrangement of at least two pixel units in the adjacent pixel groups 10 is different.
Referring to fig. 3, the arrangement of the pixel units in the adjacent pixel groups 10 is different along the first direction X and the second direction Y, so as to avoid that a plurality of same display gray scales appear along the first direction X and the second direction Y, which causes a sub-display image to have a stripe-like phenomenon and affects the image display quality
Optionally, at least two pixel units in each pixel group are sequentially arranged along the first direction, a plurality of pixel groups are sequentially arranged along the first direction, and the arrangement modes of the pixel units in adjacent pixel groups are different along the second direction; or,
at least two pixel units in each pixel group are sequentially arranged along the second direction, a plurality of pixel groups are sequentially arranged along the second direction, and the arrangement modes of the pixel units in the adjacent pixel groups are different along the first direction.
Specifically, referring to fig. 2, along the second direction Y, the arrangement of the pixel units in the adjacent pixel groups 10 is different, so as to avoid that a plurality of same display gray scales appear along the second direction Y, so that the sub-display image has a stripe-like phenomenon, which affects the image display quality.
It should be noted that fig. 2 only exemplarily shows a case where at least two pixel units in the pixel group 10 are arranged along the first direction X, and the arrangement of the pixel units in the pixel group 10 adjacent to each other along the second direction Y is different, and a case where at least two pixel units in the pixel group 10 are arranged along the second direction Y, and the arrangement of the pixel units in the pixel group 10 adjacent to each other along the first direction X is different is similar to that in fig. 2.
Fig. 4 is a schematic diagram of a display driving apparatus according to an embodiment of the present invention, and referring to fig. 4, the display driving apparatus includes:
an image obtaining module 210, configured to obtain a next display frame and a current display frame of a display panel;
a comparing module 220, configured to compare the next display frame with the current display frame; when the display panel comprises at least one preset image display area, the preset image display area comprises a first sub-area and a second sub-area, the first sub-area comprises at least one pixel unit, the second sub-area comprises at least one pixel unit, and each pixel unit comprises at least three sub-pixel units with different colors; the absolute value of the difference value between the display gray scale of the sub-pixel unit of at least one color in the preset image display area of the next display picture and the display gray scale of the sub-pixel unit corresponding to the preset image display area of the current display picture is larger than a first set value, and the absolute values of the display gray scale differences of the sub-pixel units of the same color in the sub-pixel units of the at least one color in the preset image display area of the next display picture are all less than or equal to a second set value, and when the absolute value of the difference between the display gray scale of the sub-pixel unit of the at least one color in the first sub-region of the current display picture and the display gray scale of the sub-pixel unit of the same color in the second sub-region of the current display picture is greater than a third set value, dividing the next display picture of the preset image display area into at least two sub-display pictures; wherein the third set value is greater than the first set value;
the display driving module 230 is configured to drive the display panel to sequentially switch and display the at least two sub-display frames when the display of the current display frame is finished; wherein, (A1j + A2j … … + Anj)/n ═ Aj, where Anj is the display brightness of the jth sub-pixel unit of the nth sub-display frame in the preset image display area, n is an integer greater than or equal to 2, Aj is the target display brightness of the jth sub-pixel unit of the next display frame, and when Aj is the target display brightness of one sub-pixel unit in the sub-pixel unit of the at least one color, A1j, A2j … …, and Anj are not equal to Aj.
The display driving apparatus provided in this embodiment and the display driving method of the display panel provided in any embodiment of the present invention belong to the same inventive concept, and have corresponding beneficial effects, and detailed technical details of the display driving apparatus provided in any embodiment of the present invention are not described in detail in this embodiment.
The present embodiment further provides a display device, fig. 5 is a schematic diagram of a display device according to an embodiment of the present invention, and referring to fig. 5, the display device 100 includes a display panel 200 and a display driving device 300 according to any embodiment of the present invention.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A display driving method of a display panel, comprising:
acquiring a next display picture and a current display picture of a display panel;
comparing the next display frame with the current display frame; when the display panel comprises at least one preset image display area, the preset image display area comprises a first sub-area and a second sub-area, the first sub-area comprises at least one pixel unit, the second sub-area comprises at least one pixel unit, and each pixel unit comprises at least three sub-pixel units with different colors; the absolute value of the difference value between the display gray scale of the sub-pixel unit of at least one color in the preset image display area of the next display picture and the display gray scale of the sub-pixel unit corresponding to the preset image display area of the current display picture is larger than a first set value, and the absolute values of the display gray scale differences of the sub-pixel units of the same color in the sub-pixel units of the at least one color in the preset image display area of the next display picture are all less than or equal to a second set value, and when the absolute value of the difference between the display gray scale of the sub-pixel unit of the at least one color in the first sub-region of the current display picture and the display gray scale of the sub-pixel unit of the same color in the second sub-region of the current display picture is greater than a third set value, dividing the next display picture of the preset image display area into at least two sub-display pictures; wherein the third set value is greater than the first set value;
when the display of the current display picture is finished, driving the display panel to sequentially switch and display the at least two sub-display pictures; wherein, (A1j + A2j … … + Anj)/n ═ Aj, where Anj is the display brightness of the jth sub-pixel unit of the nth sub-display frame in the preset image display area, n is an integer greater than or equal to 2, Aj is the target display brightness of the jth sub-pixel unit of the next display frame, and when Aj is the target display brightness of one sub-pixel unit in the sub-pixel unit of the at least one color, A1j, A2j … …, and Anj are not equal to Aj.
2. The method of claim 1, wherein:
the display frequency of the at least two sub-display pictures is greater than or equal to the display frequency of the current display picture.
3. The method of claim 1, wherein:
and setting the preset image display area to include at least one pixel group, each pixel group including at least two pixel units, where (a1+ a2+ … … Am)/m is Aq, where Am is the display brightness of an mth sub-pixel unit of the same color in each pixel group of the preset image display area of the ith sub-display picture, Aq is the preset display brightness of the sub-pixel unit of the color in each pixel group of the preset image display area of the ith sub-display picture, and a1, a2, … …, and Am are all not equal to Aq, where m is an integer greater than or equal to 2.
4. The method of claim 3, wherein:
at least two pixel units in each pixel group are sequentially arranged along a first direction and/or a second direction, wherein the first direction and the second direction are mutually crossed.
5. The method of claim 4, wherein:
and along the first direction and/or the second direction, at least two pixel units in the adjacent pixel groups are arranged in different modes.
6. The method of claim 4, wherein:
at least two pixel units in each pixel group are sequentially arranged along the first direction, a plurality of pixel groups are sequentially arranged along the first direction, and the arrangement modes of the pixel units in the adjacent pixel groups are different along the second direction; or,
at least two pixel units in each pixel group are sequentially arranged along the second direction, a plurality of pixel groups are sequentially arranged along the second direction, and the arrangement modes of the pixel units in the adjacent pixel groups are different along the first direction.
7. The method according to claim 1, wherein dividing the next display frame of the predetermined image display area into at least two sub-display frames comprises:
and determining the display gray scale of each sub-pixel unit of each sub-display picture according to a display compensation table.
8. The method of claim 1, wherein:
the first sub-region is adjacent to the second sub-region.
9. A display driving apparatus, comprising:
the image acquisition module is used for acquiring a next display picture and a current display picture of the display panel;
the comparison module is used for comparing the next display picture with the current display picture; when the display panel comprises at least one preset image display area, the preset image display area comprises a first sub-area and a second sub-area, the first sub-area comprises at least one pixel unit, the second sub-area comprises at least one pixel unit, and each pixel unit comprises at least three sub-pixel units with different colors; the absolute value of the difference value between the display gray scale of the sub-pixel unit of at least one color in the preset image display area of the next display picture and the display gray scale of the sub-pixel unit corresponding to the preset image display area of the current display picture is larger than a first set value, and the absolute values of the display gray scale differences of the sub-pixel units of the same color in the sub-pixel units of the at least one color in the preset image display area of the next display picture are all less than or equal to a second set value, and when the absolute value of the difference between the display gray scale of the sub-pixel unit of the at least one color in the first sub-region of the current display picture and the display gray scale of the sub-pixel unit of the same color in the second sub-region of the current display picture is greater than a third set value, dividing the next display picture of the preset image display area into at least two sub-display pictures; wherein the third set value is greater than the first set value;
the display driving module is used for driving the display panel to sequentially switch and display the at least two sub-display pictures when the display of the current display picture is finished; wherein, (A1j + A2j … … + Anj)/n ═ Aj, where Anj is the display brightness of the jth sub-pixel unit of the nth sub-display frame in the preset image display area, n is an integer greater than or equal to 2, Aj is the target display brightness of the jth sub-pixel unit of the next display frame, and when Aj is the target display brightness of one sub-pixel unit in the sub-pixel unit of the at least one color, A1j, A2j … …, and Anj are not equal to Aj.
10. A display device characterized by comprising a display panel and the display drive device according to claim 9.
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