CN115116383A - Driving method of display panel and related device - Google Patents

Driving method of display panel and related device Download PDF

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Publication number
CN115116383A
CN115116383A CN202210611459.XA CN202210611459A CN115116383A CN 115116383 A CN115116383 A CN 115116383A CN 202210611459 A CN202210611459 A CN 202210611459A CN 115116383 A CN115116383 A CN 115116383A
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Prior art keywords
display area
voltage state
displayed
regions
display
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CN202210611459.XA
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Chinese (zh)
Inventor
王铁钢
张小宝
姜海斌
上官修宁
韩光光
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Yungu Guan Technology Co Ltd
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Yungu Guan Technology Co Ltd
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Priority to CN202210611459.XA priority Critical patent/CN115116383A/en
Publication of CN115116383A publication Critical patent/CN115116383A/en
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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]
    • 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]
    • 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
    • G09G3/34—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 by control of light from an independent source
    • G09G3/36—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 by control of light from an independent source using liquid crystals
    • 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
    • G09G2320/0209—Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

The application discloses a driving method and a related device of a display panel, wherein the display panel comprises a display area and a non-display area arranged in a first direction of the display area, and the driving method comprises the following steps: obtaining gray scale distribution information of a picture to be displayed in the display area in the first direction; setting the voltage state of the non-display area according to the gray scale distribution information; and synchronously driving the display area and the non-display area to work, wherein the display area displays the picture to be displayed, and the non-display area works based on the set voltage state of the non-display area. The mode can reduce energy consumption and unnecessary color influence, can dynamically set different non-display area voltage states according to pictures to ensure the effect of each frame of picture, and reduces vertical plane crosstalk.

Description

Driving method of display panel and related device
Technical Field
The present disclosure relates to the field of display technologies, and in particular, to a driving method of a display panel and a related device.
Background
When the display panel is used, adjacent areas with large gray scale difference on the vertical surface can be mutually influenced to cause vertical surface crosstalk, and the reason may be caused by data and DTFT gate coupling inside the screen body and cannot be solved by optimizing the design of the screen body.
Disclosure of Invention
The technical problem mainly solved by the application is to provide a driving method of a display panel and a related device, so as to solve the problem of vertical plane crosstalk existing in the display panel in the prior art when in use.
In order to solve the technical problem, the present application adopts a technical solution that: there is provided a driving method of a display panel including a display area and a non-display area disposed in a first direction of the display area, the driving method including:
obtaining gray scale distribution information of a picture to be displayed in the display area in the first direction;
setting the voltage state of the non-display area according to the gray scale distribution information;
and synchronously driving the display area and the non-display area to work, wherein the display area displays the picture to be displayed, and the non-display area works based on the set voltage state of the non-display area.
As an aspect, the step of setting the voltage state of the non-display area according to the gray scale distribution information includes:
judging whether the picture to be displayed is a single gray-scale image or not according to the gray-scale distribution information;
if yes, setting the non-display area to be in a high-impedance voltage state; if not, the to-be-displayed picture is divided into a plurality of areas, and the non-display area is set to be in a high-impedance voltage state or a low-gray-scale voltage state based on gray scale distribution information of any two adjacent areas in the first direction.
Preferably, the low gray scale voltage state includes a 0 gray scale voltage state.
As one scheme, before the step of determining whether the picture to be displayed is a single gray-scale image according to the gray-scale distribution information, the method further includes:
and setting the voltage state of the non-display area to be the high-impedance voltage state.
As one scheme, the step of dividing the to-be-displayed picture into a plurality of regions and setting the non-display region to be in a high impedance voltage state or a low gray scale voltage state based on gray scale distribution information of any two of the regions adjacent to each other in the first direction includes:
dividing the picture to be displayed into a plurality of regions arranged along the first direction, wherein the length of each region extending along a second direction perpendicular to the first direction is the same as the length of the picture to be displayed extending along the second direction;
setting the non-display area to the low grayscale voltage state in response to an absolute value of a difference between average grayscale levels of at least one set of any two adjacent regions in the first direction being greater than or equal to a first threshold.
Optionally, the driving method further includes:
dividing each of the regions into a plurality of sub-regions arranged along the second direction in response to an absolute value of a difference between average gray scales of any two of the regions adjacent in the first direction being smaller than the first threshold;
setting the non-display area to the low gray scale voltage state in response to the absolute value of the difference between the average gray scales of any two sub-areas adjacent to each other in at least one group in the first direction being greater than or equal to a second threshold; and setting the non-display area to the high-impedance voltage state in response to an absolute value of a difference between average gray scales of any two adjacent sub-areas in the first direction being smaller than the second threshold.
Optionally, each of the regions has the same width extending in the first direction; and/or the sub-regions each extend in the second direction for the same length, and the sub-regions each extend in the first direction for the same length.
As one scheme, the step of dividing the to-be-displayed picture into a plurality of regions and setting the non-display region to be in a high impedance voltage state or a low gray scale voltage state based on gray scale distribution information of any two of the regions adjacent to each other in the first direction includes:
dividing the picture to be displayed into a plurality of areas, wherein the picture to be displayed is divided into at least two areas in the first direction and the second direction perpendicular to the first direction;
setting the non-display area to the low grayscale voltage state in response to an absolute value of a difference between average grayscale levels of at least one set of any two adjacent regions in the first direction being greater than or equal to a first threshold; and setting the non-display area to the high-impedance voltage state in response to an absolute value of a difference between average gray scales of any two of the areas adjacent in the first direction being smaller than the first threshold.
Preferably, each of the regions has the same width extending in the first direction, and each of the regions has the same length extending in the second direction.
In order to solve the above technical problem, another technical solution adopted by the present application is: there is provided a driving apparatus for a display panel, comprising a memory and a processor coupled to each other, wherein the memory stores program instructions, and the processor is configured to execute the program instructions to implement the driving method for the display panel in any of the above embodiments.
In order to solve the above technical problem, another technical solution adopted by the present application is: provided is a display device including: the display panel driving device according to any of the above embodiments, and the display panel electrically connected to the driving device.
In order to solve the above technical problem, another technical solution adopted by the present application is to provide a storage device, which stores program instructions capable of being executed by a processor, where the program instructions are used to implement the driving method of the display panel described in any one of the above embodiments.
Being different from the prior art situation, the beneficial effect of this application is:
the driving method of the display panel, provided by the application, is used for acquiring a picture to be displayed in advance before the display of the display panel, analyzing the picture to be displayed to obtain gray scale distribution information of the picture in a first direction, and judging whether vertical plane crosstalk optimization is needed or not by comparing an absolute value of a difference value of average gray scales of adjacent areas in the first direction with a threshold value; if the optimization is needed, the non-display area is controlled to be in a low gray scale voltage state, the display area adjacent to a light color area affected by the dark color area of the display area is affected by the dark color state of the non-display area, and the display area is darkened, so that the color difference between the display area and the light color area is reduced, and the vertical plane crosstalk is effectively optimized; if the vertical surface crosstalk optimization is not needed, the non-display area is controlled to be in a high impedance state, energy consumption and unnecessary color influence are reduced, and different voltage states of the non-display area can be dynamically set according to pictures to ensure the effect of each frame of picture and reduce the effect of vertical surface crosstalk.
In addition, the method for analyzing the picture to be displayed by the driving method of the display panel adopts a gradual thinning analysis method from a large range to a small range, firstly judges whether the picture to be displayed is a single gray scale image or not, if the picture to be displayed is the single gray scale image, the optimization is not needed, the non-display area is controlled to be in a high impedance voltage state, the influence of the non-display area on the display effect of the single gray scale image is avoided, if the picture to be displayed is not the single gray scale image, the picture to be displayed is firstly divided into a plurality of areas which are uniformly distributed along a first direction, the absolute value of the difference value of the average gray scale of adjacent areas is calculated and compared with a first threshold value, if the absolute value of the difference value of the average gray scale of any adjacent area is larger than or equal to the first threshold value, the non-display area is controlled to be in a low gray scale voltage state, the vertical plane crosstalk is optimized, and if the absolute value of the difference value of the average gray scale of any adjacent area is smaller than the first threshold value, and if the absolute value of the difference value of the average gray scale of any adjacent sub-region is less than the second threshold, the vertical plane crosstalk is not required to be optimized, the non-display region is controlled to be in a high impedance state, the unnecessary data processing amount is reduced while the accuracy of analysis of the gray scale distribution information of the vertical plane of a picture to be displayed is ensured, the voltage state of the non-display region is dynamically set according to each picture, and the optimal display effect of each picture is ensured.
Drawings
FIG. 1 is a schematic flow chart illustrating a driving method of a display panel according to an embodiment of the present disclosure;
FIG. 2 is a schematic structural diagram of an embodiment of a display panel;
FIG. 3 is a flowchart illustrating an embodiment corresponding to step S2 in FIG. 1;
FIG. 4 is a flowchart illustrating an embodiment corresponding to step S23 in FIG. 3;
FIG. 5 is a schematic structural diagram of an embodiment of dividing a to-be-displayed picture into a plurality of regions;
FIG. 6 is a schematic structural diagram of another embodiment of dividing a to-be-displayed picture into a plurality of regions;
FIG. 7 is a schematic structural diagram of an embodiment of a display panel in an operating state;
FIG. 8 is a schematic structural diagram of an embodiment of a driving apparatus for a display panel according to the present application;
FIG. 9 is a schematic structural diagram of an embodiment of a display device according to the present application;
fig. 10 is a schematic structural diagram of an embodiment of a memory device according to the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection content of the present application.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic flow chart of an embodiment of a driving method of a display panel of the present application, and fig. 2 is a schematic structural diagram of an embodiment of the display panel. The display panel can be an OLED display panel, an LED display panel, a liquid crystal display panel and the like.
Therein, the display panel 1 includes a display area 101 and a non-display area 102 located in a first direction Y of the display area 101.
The first direction Y is a direction perpendicular to the scanning direction of the display panel 1, and the first direction Y is a column direction of the display panel 1 that is formed by scanning line by line. As shown in fig. 2, the non-display area 102 may be disposed above and below the display area 101. Of course, in other embodiments, the display panel 1 may further include the non-display region 102 located in the second direction X where the display region 101 is perpendicular to the first direction Y, but since the display panel 1 adopts the line scanning method, the non-display region 102 in the driving method mentioned below is only located in the first direction Y of the display region 101. Further, the driving method of the display panel provided by the present application includes:
s1: and obtaining gray scale distribution information of a picture to be displayed in the display area in the first direction.
Specifically, as shown in fig. 2, obtaining gray scale distribution information of the to-be-displayed picture in the first direction means obtaining gray scale information of all pixel points of the display area 101, and thus obtaining gray scale distribution information of the pixel points in the first direction Y.
For convenience of explanation, in this embodiment, an image analysis module is added inside the driver IC as an example, inside the driver IC, the voltage configuration module receives the to-be-displayed picture information sent by the processor, and configures the voltage information of all the pixel points of the display area 101 according to the to-be-displayed picture information, the voltage information is transmitted to the storage module inside the driver IC for storage, and the image analysis module acquires the voltage information by the storage module, analyzes the voltage information, thereby obtains the gray scale information of all the pixel points of the display area 101, and further obtains the gray scale distribution information of the to-be-displayed picture in the first direction Y.
S2: and setting the voltage state of the non-display area according to the gray scale distribution information.
The voltage of the non-display area can be a data voltage, that is, the voltage state of the non-display area can be controlled by controlling the data voltage value input to the non-display area through the data line.
Specifically, referring to fig. 3, fig. 3 is a flowchart illustrating an embodiment corresponding to step S2 in fig. 1. The specific implementation process of the step S2 may be:
s21: according to the gray scale distribution information of the to-be-displayed picture in the first direction obtained in S1, it is first determined whether the to-be-displayed picture is a single gray scale image.
Specifically, the single gray scale image means that the gray scales of the R component, the G component and the B component of all the pixel points of the image to be displayed are respectively the same, wherein the gray scales of the R component, the G component and the B component may be the same or different. The judgment method is that the image analysis module compares the gray scale information of all the pixel points.
S22: if the picture to be displayed is a single gray-scale image, the non-display area is set to be in a high impedance voltage state.
S23: if the image is not a single gray scale image, the image to be displayed is divided into a plurality of areas, and the non-display area is set to be in a high impedance voltage state or a low gray scale voltage state based on gray scale distribution information of any two adjacent areas in the first direction.
The high impedance voltage state mentioned in the above steps S22 and S23 means that the non-display area 102 is in the off state, and the non-display area is not subjected to any voltage output, so that the power consumption of the display panel can be effectively reduced. The low gray scale voltage state refers to a voltage state for controlling the non-display area 102 to display a dark color image, in one embodiment, the low gray scale voltage state may be a 0 gray scale voltage state, that is, the non-display area 102 is controlled to display a black color image, and in other embodiments, the low gray scale voltage state may also include other voltage states for controlling the non-display area to display a dark color image. In order to improve the optimization effect on the vertical plane crosstalk, the low gray scale voltage state is preferably a 0 gray scale voltage state.
In one embodiment, the image analysis module controls the Blank setting module to set the voltage state of the non-display area according to the analysis result, in other embodiments, the image analysis module feeds back the analyzed to-be-displayed picture and a signal obtained according to the analysis result to the Blank setting module, and the Blank setting module sets the voltage state of the non-display area, so that all display information of the display panel is obtained.
Specifically, in an embodiment, please refer to fig. 4, and fig. 4 is a flowchart illustrating an embodiment corresponding to step S23 in fig. 3. In the step S23, the step of dividing the to-be-displayed image into a plurality of regions and setting the non-display region to the high impedance voltage state or the low gray scale voltage state based on the gray scale distribution information of any two adjacent regions in the first direction includes:
s231: the method comprises the steps of dividing a picture to be displayed into a plurality of areas arranged along a first direction, wherein the length of each area extending along a second direction perpendicular to the first direction is the same as the length of the picture to be displayed extending along the second direction.
Specifically, fig. 5 is a schematic structural diagram of an embodiment in which a to-be-displayed frame is divided into a plurality of regions. As shown in fig. 5, the to-be-displayed picture is divided into n regions arranged along the first direction Y, and each region extends from one end of the display region to the other end of the display region.
In one embodiment, each region has the same width in the first direction Y, that is, the to-be-displayed picture is uniformly divided into a plurality of regions in the first direction Y, so as to ensure the accuracy of the analysis on the uniformity of the gray scale distribution on the vertical plane. Of course, in other embodiments, the widths of the two adjacent regions in the first direction Y may also be different.
In order to improve the accuracy of analysis, the to-be-displayed picture can be divided into as many areas arranged along the first direction Y as possible within a certain limit on the premise of avoiding excessive data processing amount.
S232: in response to the absolute value of the difference between the average gray levels of any two regions adjacent in the first direction being greater than or equal to the first threshold value, the non-display region is set to the low gray level voltage state.
Specifically, taking fig. 5 as an example, the image to be displayed in fig. 5 is divided into n regions arranged along the first direction Y, and at this time, an average gray scale of each region may be obtained first; then combining any two adjacent regions in the n regions to form n-1 combinations; and obtaining the absolute value of the difference value of the average gray scales of two adjacent areas in each combination.
When the absolute value of the difference value corresponding to at least one combination is greater than or equal to a first threshold value, the situation that gray scale mutation exists in two adjacent areas in the combination is indicated, and the vertical plane crosstalk phenomenon is easy to occur; the non-display region 102 can be set to a low gray scale voltage state at this time.
The vertical plane crosstalk is caused by a large gray scale difference between adjacent areas on the vertical plane, for example, the display block a and the display block b in the display area in fig. 2 are black with 0 gray scale, and the display color of the display block c is affected to become dark due to a large gray scale difference between the display block c and the display block a, the display block b, and the display color of the display block c is affected to become dark, so that the color difference between the display block c and the display blocks d, e is large, and the appearance is affected.
After the non-display area 102 is set to be in a low gray scale voltage state, the non-display area 102 displays a dark color, and the display blocks d and e are affected by the non-display area 102 to become dark, so that the color difference among the display blocks d and e and the display blocks c is reduced, and the problem of vertical plane crosstalk is optimized.
The first threshold value can be adjusted and selected according to product and customer requirements, for example, in a use scene with higher requirement on the uniformity of the displayed color, the first threshold value can be set to be smaller, and in a use scene with lower requirement on the uniformity of the displayed color, the first threshold value can be set to be larger.
In one application scenario, in synchronization with the above step S232, the non-display area is set to the high-impedance voltage state in response to the absolute value of the difference between the average gray levels of any two areas adjacent in the first direction being smaller than the first threshold.
When the absolute values of the difference values corresponding to all the combinations are smaller than the first threshold, it is indicated that there is no gray scale abrupt change in the image to be displayed in the first direction Y, and the probability of vertical plane crosstalk is low, so that the non-display area 102 is set to a high-impedance voltage state at this time, thereby reducing energy consumption and unnecessary color influence.
In one application scenario, in synchronization with the above step S232, when an absolute value in response to a difference between average gray levels of any two regions adjacent in the first direction is smaller than a first threshold, dividing each region into a plurality of sub-regions arranged in the second direction;
setting the non-display region to a low gradation voltage state in response to an absolute value of a difference between the average gradations of any two sub regions adjacent in the first direction being greater than or equal to a second threshold; and setting the non-display area to a high-impedance voltage state in response to an absolute value of a difference between the average gray scales of any two sub-areas adjacent in the first direction being smaller than a second threshold.
Since the area in the first direction Y includes all the pixel points from one end to the other end of the display area in the second direction X, the average gray scale thereof is actually an average value of the gray scales of all the pixel points within a certain width range in the second direction X, referring to fig. 5, the average gray scales of the areas corresponding to the display blocks a and b also include partial contents of the display blocks d and e, and therefore, the absolute value of the difference value of the average gray scales of the areas corresponding to the display blocks a and b and the areas corresponding to the display blocks c cannot accurately reflect the actual gray scale distribution difference in the vertical plane when the comparison is performed.
In order to further improve the accuracy of the analysis on the uniformity of the gray scale distribution on the vertical plane, each region in the first direction Y may be further divided, and in one usage scenario, fig. 6 is a schematic structural diagram of another embodiment in which the to-be-displayed picture is divided into a plurality of regions. Referring to fig. 6, each region is divided into m sub-regions arranged in the second direction X, thereby forming a two-dimensional network composed of nm sub-regions.
The average gray level of each sub-region is calculated and the absolute value of the difference of the average gray levels of two sub-regions adjacent in the first direction Y is calculated, referring to fig. 6, i.e., the absolute value of the difference of the average gray levels of … between the sub-region 11 and the sub-region 12, and between the sub-region 12 and the sub-region 13 and … between the sub-region 21 and the sub-region 22. At this time, referring to fig. 6, the sub-regions corresponding to the display block a, the display block b, and the display block c only include their own sub-regions, and the average gray scale represents a real gray scale distribution condition, and the absolute value of the difference between the average gray scales of the adjacent sub-regions can also reflect the uniformity of the gray scale distribution on the vertical plane more accurately.
The second threshold refers to the first threshold, and the selection can be adjusted according to the product and the customer requirements, which is not described herein again.
When the absolute value of the difference value of the average gray scales of any two adjacent sub-areas in the first direction Y is greater than or equal to the second threshold, it is determined that vertical plane crosstalk optimization is required, and at this time, the non-display area is controlled to be in a low gray scale voltage state, that is, the non-display area 102 is displayed in a dark color, and at this time, the display blocks d and e are affected by the non-display area 102 to be darkened, so that the color difference among the display blocks d, e and c is reduced, and the problem of vertical plane crosstalk is optimized.
And when the absolute value of the difference value of the average gray scales of any two adjacent subregions in the first direction Y is smaller than a second threshold value, determining that vertical plane crosstalk optimization is not needed, and controlling the non-display region to be in a high-impedance state at the moment to reduce energy consumption and unnecessary color influence.
Preferably, the length of each sub-region extending in the second direction X is the same, and the width of each sub-region extending in the first direction Y is the same, that is, the to-be-displayed picture is uniformly divided into a plurality of sub-regions in the first direction Y and the second direction X, so as to ensure the accuracy of the analysis of the gray scale distribution uniformity on the vertical plane.
Of course, in other embodiments, the to-be-displayed screen may be directly subdivided into a plurality of areas when step S23 is executed. The specific process can be as follows: when the picture to be displayed is a non-single gray scale image, the picture to be displayed can be directly divided into a plurality of areas in the first direction Y and the second direction X, the absolute value of the difference value of the average gray scale of the adjacent areas in the first direction Y is calculated, the gray scale distribution uniformity on the vertical surface is analyzed, and then the absolute value of the difference value is compared with a threshold value to judge whether the vertical surface crosstalk needs to be optimized. However, the solution may cause an increase in data analysis amount due to no gradual analysis process from a large range to a small range, for example, when the to-be-displayed picture is divided into a plurality of regions arranged along the first direction Y, the absolute value of the difference value of the average gray levels of adjacent regions is greater than the first threshold, and at this time, the non-display region 102 may be directly selected to be set in the low gray level voltage state without further dividing the region into sub-regions arranged along the second direction X.
In one embodiment, to further reduce the power consumption and the data processing amount, step S21 is preceded by:
the voltage state of the non-display area is set to a high-impedance voltage state.
Specifically, the voltage state of the non-display area 102 can be preset to be a high-impedance voltage state through the Blank setting module, and at this time, the non-display area 102 is in a disconnected state, and no voltage is input, so that energy consumption can be effectively reduced. Then, the image analysis module determines whether the voltage state of the non-display area 102 needs to be adjusted to a low gray scale voltage state according to the analysis result, if the voltage state of the non-display area 102 does not need to be adjusted, the Blank setting module does not need to set the voltage state of the non-display area 102 again, and the image analysis module can directly integrate the preset voltage information of the non-display area 102 and the to-be-displayed image processing information to obtain to-be-displayed image information of the display panel 100; if the adjustment is needed, the voltage state of the non-display area 102 is reset by the Blank setting module and then integrated with the processing information of the picture to be displayed to obtain the information of the picture to be displayed of the display panel 100.
S3: and synchronously driving the display area and the non-display area to work, wherein the display area displays a picture to be displayed, and the non-display area works based on the set voltage state of the non-display area.
After the voltage state of the non-display area 102 is set, the voltage information of the non-display area 102 and the information of the picture to be displayed are sent to the display panel for displaying.
In one embodiment, the Blank setting module does not preset the voltage state of the non-display area 102, the Blank setting module inside the driving IC sets the voltage state of the non-display area 102 after receiving the information from the image analysis module, and directly sends the voltage information of the non-display area 102 and the information of the picture to be displayed to the image correction module inside the driving IC after the setting is completed, such as the gamma correction module and the Demura correction module, and the image correction module processes the information and sends the information to the display panel for display.
In another embodiment, the Blank setting module presets the voltage state of the non-display area 102 as a high impedance voltage state, and if the voltage state of the non-display area 102 does not need to be changed after being analyzed by the image analysis module, the image analysis module sends preset voltage information of the non-display area 102 and processing information of a picture to be displayed to the image correction module, and the preset voltage information and the processing information of the picture to be displayed are sent to the display panel for display after being processed by the image correction module; if the voltage state of the non-display area 102 needs to be changed after being analyzed by the image analysis module, the Blank setting module sets the voltage state of the non-display area 102 after receiving the information of the image analysis module, the voltage information of the non-display area 102 and the information of the picture to be displayed are directly sent to the image correction module in the driving IC after the setting is finished, and the information is sent to the display panel for display after being processed by the image correction module.
Referring to fig. 7, fig. 7 is a schematic structural diagram of an embodiment of the working state of the display panel. After the non-display area 102 is set to be in the low gray scale voltage state, compared with the non-display area 102 preset to be in the high impedance voltage state shown in fig. 2, the colors of the display blocks d and e in the display image of the display panel are darkened due to the influence of the non-display area 102, so that the color difference among the display blocks d, e and c is reduced, and the problem of vertical plane crosstalk is effectively optimized.
Referring to fig. 8, fig. 8 is a schematic structural diagram of an embodiment of a driving device of a display panel according to the present application. The driving apparatus 20 of the display panel specifically includes a memory 21 and a processor 22 coupled to each other, where the memory 21 stores program instructions, and the processor 22 is configured to execute the program instructions to implement the steps in any of the above-mentioned driving methods of the display panel. Specifically, the driving means includes, but is not limited to: desktop computers, notebook computers, tablet computers, servers, etc., without limitation thereto. Further, the processor 22 may also be referred to as a CPU (Central Processing Unit). Processor 22 may be an integrated circuit chip having signal processing capabilities. The Processor 22 may also be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate array (Field-Programmable Gate array FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. In addition, the processor 22 may be commonly implemented by an integrated circuit chip.
Referring to fig. 9, fig. 9 is a schematic structural diagram of an embodiment of a display device according to the present application. The display device includes a driving device 20 of any one of the display panels described above and a display panel 1 electrically connected to the driving device 20. Wherein the display panel 1 includes but is not limited to: an OLED display panel, an LED display panel, a liquid crystal display panel, and the like.
Referring to fig. 10, fig. 10 is a schematic structural diagram of an embodiment of a storage device 30 of the present application, in which a program instruction 32 capable of being executed by a processor is stored, and the program instruction 32 is used to implement the steps in any one of the above-mentioned display panel driving methods. Optionally, the storage device 30 comprises: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above embodiments are only examples of the present application, and not intended to limit the scope of the present application, and all equivalent structures or equivalent processes performed by the present application and the contents of the attached drawings, which are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims (10)

1. A driving method of a display panel, the display panel including a display area and a non-display area disposed in a first direction of the display area, the driving method comprising:
obtaining gray scale distribution information of a picture to be displayed in the display area in the first direction;
setting the voltage state of the non-display area according to the gray scale distribution information;
and synchronously driving the display area and the non-display area to work, wherein the display area displays the picture to be displayed, and the non-display area works based on the set voltage state of the non-display area.
2. The driving method according to claim 1, wherein the step of setting the voltage state of the non-display area according to the gray scale distribution information comprises:
judging whether the picture to be displayed is a single gray-scale image or not according to the gray-scale distribution information;
if yes, setting the non-display area to be in a high-impedance voltage state; if not, dividing the picture to be displayed into a plurality of areas, and setting the non-display area to be in a high-impedance voltage state or a low-gray-scale voltage state based on gray scale distribution information of any two adjacent areas in the first direction;
preferably, the low gray scale voltage state includes a 0 gray scale voltage state.
3. The driving method according to claim 2, wherein before the step of determining whether the frame to be displayed is a single gray-scale image according to the gray-scale distribution information, the method further comprises:
and setting the voltage state of the non-display area to be the high-impedance voltage state.
4. The driving method according to claim 2, wherein the step of dividing the to-be-displayed screen into a plurality of regions and setting the non-display region to a high impedance voltage state or a low gray scale voltage state based on gray scale distribution information of any two of the regions adjacent in the first direction comprises:
dividing the picture to be displayed into a plurality of regions arranged along the first direction, wherein the length of each region extending along a second direction perpendicular to the first direction is the same as the length of the picture to be displayed extending along the second direction;
setting the non-display area to the low grayscale voltage state in response to an absolute value of a difference between average grayscale levels of at least one set of any two adjacent regions in the first direction being greater than or equal to a first threshold.
5. The driving method according to claim 4, further comprising:
dividing each of the regions into a plurality of sub-regions arranged along the second direction in response to an absolute value of a difference between average gray scales of any two of the regions adjacent in the first direction being smaller than the first threshold;
setting the non-display area to the low grayscale voltage state in response to an absolute value of a difference between average grayscales of any two of the sub areas adjacent to at least one group in the first direction being greater than or equal to a second threshold; and setting the non-display area to the high-impedance voltage state in response to the absolute value of the difference between the average gray levels of any two adjacent sub-areas in the first direction being smaller than the second threshold.
6. The driving method according to claim 5, wherein each of the regions has the same width extending in the first direction; and/or the length of each sub-region extending in the second direction is the same, and the length of each sub-region extending in the first direction is the same.
7. The driving method according to claim 2, wherein the step of dividing the to-be-displayed screen into a plurality of regions and setting the non-display region to a high impedance voltage state or a low gray scale voltage state based on gray scale distribution information of any two of the regions adjacent in the first direction comprises:
dividing the picture to be displayed into a plurality of regions, wherein the picture to be displayed is divided into at least two regions in the first direction and the second direction perpendicular to the first direction;
setting the non-display area to the low grayscale voltage state in response to an absolute value of a difference between average grayscale levels of at least one set of any two adjacent regions in the first direction being greater than or equal to a first threshold; and setting the non-display area to the high-impedance voltage state in response to an absolute value of a difference between average gray scales of any two of the areas adjacent in the first direction being smaller than the first threshold;
preferably, each of the regions has the same width extending in the first direction, and each of the regions has the same length extending in the second direction.
8. A driving apparatus of a display panel, comprising a memory and a processor coupled to each other, wherein the memory stores program instructions, and the processor is configured to execute the program instructions to implement the driving method according to any one of claims 1 to 7.
9. A display device, comprising:
a driving device as claimed in claim 8 and a display panel electrically connected to said driving device.
10. A storage device, characterized by storing program instructions executable by a processor for implementing the driving method according to any one of claims 1 to 7.
CN202210611459.XA 2022-05-30 2022-05-30 Driving method of display panel and related device Pending CN115116383A (en)

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Application Number Priority Date Filing Date Title
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Publications (1)

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