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CN110782834A - Display compensation method, device, display panel and system - Google Patents

Display compensation method, device, display panel and system Download PDF

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Publication number
CN110782834A
CN110782834A CN201910796297.XA CN201910796297A CN110782834A CN 110782834 A CN110782834 A CN 110782834A CN 201910796297 A CN201910796297 A CN 201910796297A CN 110782834 A CN110782834 A CN 110782834A
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Prior art keywords
color gamut
display area
sub
parameter
standard
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CN201910796297.XA
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CN110782834B (en
Inventor
周天朕
朱修剑
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Kunshan Govisionox Optoelectronics Co Ltd
Kunshan Guoxian Photoelectric Co Ltd
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Kunshan Guoxian Photoelectric Co Ltd
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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]
    • 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
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0666—Adjustment of display parameters for control of colour parameters, e.g. colour temperature

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

The embodiment of the invention provides a display compensation method, a display compensation device, a display panel and a display compensation system, and relates to the technical field of display. The display compensation method is used for a display panel, the display panel comprises a main display area and an auxiliary display area, the color depth of the auxiliary display area is lower than that of the main display area, and the method comprises the following steps: obtaining the color gamut parameter of the auxiliary standard color gamut corresponding to the auxiliary display area according to the obtained color gamut parameter of the auxiliary display area, the color gamut parameter of the main display area and the color gamut parameter of the standard color gamut; adjusting a driving signal for driving each sub-pixel in the auxiliary display area based on the color gamut parameter of the auxiliary standard color gamut and the color gamut parameter of the auxiliary display area to make the color gamut of the auxiliary display area tend to or be the same as the auxiliary standard color gamut; and adjusting the driving signals for driving the sub-pixels in the main display area based on the obtained color gamut parameters of the main display area and the color gamut parameters of the standard color gamut, so that the color gamut of the main display area tends to be or is the same as the standard color gamut. By utilizing the technical scheme of the invention, the display effect can be improved.

Description

Display compensation method, device, display panel and system
Technical Field
The invention belongs to the technical field of display, and particularly relates to a display compensation method, a display compensation device, a display panel and a display compensation system.
Background
The image display of the display panel is realized by lighting the pixels of the display panel. The pixels of the display panel include pixels of a color having a relatively high lighting operation voltage and pixels of a color having a relatively low lighting operation voltage.
In the case of lighting a pixel of a color having a relatively high operating voltage, a current is laterally conducted through the hole injection layer due to the influence of a crosstalk current or a thin film transistor leakage current, so that the pixel of the color having a relatively low operating voltage also slightly emits light. In this case, the display panel is lit at a lower gray scale, which may cause non-uniformity of a single color and color distortion, thereby reducing the display effect.
Disclosure of Invention
The embodiment of the invention provides a display compensation method, a display compensation device, a display panel and a display compensation system, which can reduce or even eliminate the phenomena of non-uniform single color and color distortion and improve the display effect.
In a first aspect, an embodiment of the present invention provides a display compensation method for a display panel, where the display panel includes a main display area and an auxiliary display area, where at least a part of light transmittance of the auxiliary display area is higher than that of the main display area, and a color depth of the auxiliary display area is lower than that of the main display area, the method includes: the method comprises the steps of obtaining color gamut parameters of an auxiliary display area, color gamut parameters of a main display area and color gamut parameters of a standard color gamut, and obtaining the color gamut parameters of the auxiliary standard color gamut corresponding to the auxiliary display area according to the color gamut parameters of the auxiliary display area, the color gamut parameters of the main display area and the color gamut parameters of the standard color gamut; adjusting a driving signal for driving each sub-pixel in the sub-display area based on the color gamut parameter of the sub-standard color gamut and the color gamut parameter of the sub-display area, so that the color gamut of the sub-display area tends to be the same as or close to the sub-standard color gamut; and adjusting the driving signals for driving the sub-pixels in the main display area based on the color gamut parameters of the main display area and the color gamut parameters of the standard color gamut so that the color gamut of the main display area tends to be the standard color gamut or is the same as the standard color gamut.
In some possible embodiments, obtaining the color gamut parameter of the sub standard color gamut corresponding to the sub display area according to the color gamut parameter of the sub display area, the color gamut parameter of the main display area, and the color gamut parameter of the standard color gamut includes: calculating to obtain an auxiliary drift value of the color gamut parameter of the main display area relative to the color gamut parameter of the auxiliary display area; and based on the auxiliary drift value, performing reduction processing on the color gamut parameters of the standard color gamut, and taking the color gamut parameters of the standard color gamut after the reduction processing as the color gamut parameters of the auxiliary standard color gamut.
In some possible embodiments, adjusting the driving signal for driving each sub-pixel in the sub-display region based on the color gamut parameter of the sub-standard color gamut and the color gamut parameter of the sub-display region includes: calculating to obtain a secondary shift value of the color gamut parameter of the secondary display area relative to the color gamut parameter of the secondary standard color gamut; calculating to obtain a secondary compensation target parameter by using the secondary drift value; and adjusting the driving signal for driving each sub-pixel in the sub-display region according to the sub-compensation target parameter.
In some possible embodiments, adjusting the driving signals for driving the sub-pixels in the main display area based on the color gamut parameter of the main display area and the color gamut parameter of the standard color gamut includes: calculating to obtain a main drift value of the color gamut parameter of the main display area relative to the color gamut parameter of the standard color gamut; calculating to obtain a main compensation target parameter by using the main drift value; and adjusting the driving signals for driving the sub-pixels in the main display area according to the main compensation target parameter.
In some possible embodiments, the sub display region includes a light transmissive display region having a higher light transmittance than the main display region.
In some possible embodiments, obtaining the color gamut parameter of the sub standard color gamut corresponding to the sub display area according to the color gamut parameter of the sub display area, the color gamut parameter of the main display area, and the color gamut parameter of the standard color gamut includes: obtaining a color gamut parameter of a first sub standard color gamut corresponding to the light-transmitting display area according to the color gamut parameter of the light-transmitting display area, the color gamut parameter of the main display area and the color gamut parameter of the standard color gamut; obtaining the color gamut parameter of a second secondary standard color gamut corresponding to the transitional display area according to the color gamut parameter of the transitional display area, the color gamut parameter of the main display area and the color gamut parameter of the standard color gamut; the auxiliary display area comprises a light-transmitting display area and a transition display area located between the light-transmitting display area and the main display area, the light transmittance of the light-transmitting display area is higher than that of the main display area, and the light transmittance of the transition display area is lower than that of the light-transmitting display area.
In some possible embodiments, adjusting the driving signal for driving each sub-pixel in the sub-display region based on the color gamut parameter of the sub-standard color gamut and the color gamut parameter of the sub-display region includes: calculating to obtain a first secondary drift value of the color gamut parameter of the transparent display area relative to the color gamut parameter of the first secondary standard color gamut and a second secondary drift value of the color gamut parameter of the transitional display area relative to the color gamut parameter of the second secondary standard color gamut; calculating to obtain a first secondary compensation target parameter by using the first secondary drift value; calculating to obtain a second secondary compensation target parameter by using the second secondary drift value; adjusting a driving signal for driving each sub-pixel in the light-transmitting display area according to the first sub-compensation target parameter; and adjusting the driving signals for driving the sub-pixels in the transitional display area according to the second sub-compensation target parameter.
In some possible embodiments, after adjusting the driving signal for driving each sub-pixel in the sub-display area, the method further includes: re-acquiring the color gamut parameters of the secondary display area, and determining the first white point coordinates of the color gamut of the secondary display area; if the deviation between the first white point coordinate and the first standard white point coordinate exceeds the first deviation threshold range, updating the color gamut parameter of the auxiliary standard color gamut corresponding to the auxiliary display area according to the newly acquired color gamut parameter of the auxiliary display area, the color gamut parameter of the main display area and the color gamut parameter of the standard color gamut, wherein the first standard white point coordinate is the white point coordinate of the auxiliary standard color gamut before each updating; and adjusting the driving signals for driving the sub-pixels in the secondary display area based on the updated color gamut parameters of the secondary standard color gamut and the newly acquired color gamut parameters of the secondary display area until the deviation between the first white point coordinate and the first standard white point coordinate is within the first deviation threshold range.
In some possible embodiments, if the deviation between the first white point coordinate and the first standard white point coordinate exceeds the first deviation threshold range, updating the color gamut parameter of the sub-standard color gamut corresponding to the sub-display area according to the color gamut parameter of the sub-display area, the color gamut parameter of the main display area, and the color gamut parameter of the standard color gamut, which are obtained again, includes: if the deviation between the white point coordinate of the first light transmission area and the standard white point coordinate of the first light transmission area exceeds the first deviation threshold range, updating the color gamut parameter of the first sub standard color gamut corresponding to the light transmission display area according to the color gamut parameter of the light transmission display area, the color gamut parameter of the main display area and the color gamut parameter of the standard color gamut which are obtained again, wherein the standard white point coordinate of the first light transmission area is the white point coordinate of the first sub standard color gamut before each updating; if the deviation between the white point coordinate of the first transition area and the standard white point coordinate of the first transition area exceeds the first deviation threshold range, updating the color gamut parameter of the second sub-standard color gamut corresponding to the transition display area according to the newly acquired color gamut parameter of the transition display area, the color gamut parameter of the main display area and the color gamut parameter of the standard color gamut, wherein the standard white point coordinate of the first transition area is the white point coordinate of the second sub-standard color gamut before updating each time; the auxiliary display area comprises a light-transmitting display area and a transition display area positioned between the light-transmitting display area and the main display area, the light transmittance of the light-transmitting display area is higher than that of the main display area, the light transmittance of the transition display area is lower than that of the light-transmitting display area, the first white point coordinate comprises a first light-transmitting area white point coordinate of the light-transmitting display area and a first transition area white point coordinate of the transition display area, and the first standard white point coordinate comprises a first light-transmitting area standard white point coordinate and a first transition area standard white point coordinate.
In some possible embodiments, adjusting the driving signals for driving the sub-pixels in the secondary display area based on the updated color gamut parameters of the secondary standard color gamut and the re-acquired color gamut parameters of the secondary display area until the deviation between the first white point coordinate and the first standard white point coordinate is within the first deviation threshold range comprises: based on the updated color gamut parameter of the first sub standard color gamut and the newly acquired color gamut parameter of the light-transmitting display area, adjusting a driving signal for driving each sub-pixel in the light-transmitting display area until the deviation between the white point coordinate of the first light-transmitting area and the standard white point coordinate of the first light-transmitting area is within a first deviation threshold range; and adjusting the driving signals for driving the sub-pixels in the transitional display area based on the updated color gamut parameters of the second sub-standard color gamut and the newly acquired color gamut parameters of the transitional display area until the deviation between the white point coordinates of the first transitional area and the standard white point coordinates of the first transitional area is within the first deviation threshold range.
In some possible embodiments, after adjusting the driving signals for driving the sub-pixels in the main display area, the method further includes: re-acquiring the color gamut parameters of the main display area, and determining a second white point coordinate of the color gamut of the main display area; and if the deviation between the second white point coordinate and the second standard white point coordinate exceeds a second deviation threshold range, adjusting the driving signals for driving the sub-pixels in the main display area based on the newly acquired color gamut parameter of the main display area and the color gamut parameter of the standard color gamut until the deviation between the second white point coordinate and the second standard white point coordinate is within the second deviation threshold range, wherein the second standard white point coordinate is the white point coordinate of the standard color gamut.
In some possible embodiments, obtaining the color gamut parameter of the secondary display area, the color gamut parameter of the primary display area, and the color gamut parameter of the standard color gamut includes: and periodically acquiring the color gamut parameters of the auxiliary display area, the color gamut parameters of the main display area and the color gamut parameters of the standard color gamut according to a preset detection period.
In some possible embodiments, the display compensation method further includes: establishing a first attenuation mapping relation between the attenuation time and the auxiliary compensation target parameter and a second attenuation mapping relation between the attenuation time and the main compensation target parameter according to each detection period, and the color gamut parameters of the auxiliary display area, the color gamut parameters of the main display area and the color gamut parameters of the standard color gamut obtained in the detection period; the auxiliary compensation target parameter is used for adjusting a driving signal for driving each sub-pixel in the auxiliary display area, and the main compensation target parameter is used for adjusting a driving signal for driving each sub-pixel in the main display area.
In some possible embodiments, the gamut parameters include color coordinates and/or color temperature.
In a second aspect, an embodiment of the present invention provides a display compensation method, which is applied to display panels to be tested in the same batch, where the display panels to be tested in the same batch include at least one group of display panels to be tested, each display panel to be tested includes a main display area and an auxiliary display area, at least part of light transmittance of the auxiliary display area is higher than that of the main display area, and color depth of the auxiliary display area is lower than that of the main display area; the display compensation method comprises the following steps: selecting one display panel to be tested from a group of display panels to be tested as a sample panel aiming at any group of display panels to be tested; obtaining an auxiliary compensation target parameter and a main compensation target parameter of the sample panel by using the display compensation method in the technical scheme of the first aspect, wherein the auxiliary compensation target parameter is used for adjusting a driving signal for driving each sub-pixel in the auxiliary display area, and the main compensation target parameter is used for adjusting a driving signal for driving each sub-pixel in the main display area; and respectively adjusting a driving signal for driving each sub-pixel in the auxiliary display area and a driving signal for driving each sub-pixel in the main display area in each display panel to be tested in a group of display panels to be tested based on the auxiliary compensation target parameter and the main compensation target parameter of the sample panel.
In some possible embodiments, the display compensation method further includes: searching a secondary compensation target parameter corresponding to the current attenuation time of the display panel to be detected according to a preset first attenuation mapping relation, wherein the first attenuation mapping relation is the mapping relation between the attenuation time and the secondary compensation target parameter; adjusting a driving signal of the display panel to be tested, which is used for driving each sub-pixel in the auxiliary display area, based on the auxiliary compensation target parameter corresponding to the current attenuation time; searching a main compensation target parameter corresponding to the current attenuation time of the display panel to be detected according to a preset second attenuation mapping relation, wherein the second attenuation mapping relation is the mapping relation between the attenuation time and the main compensation target parameter; and adjusting a driving signal of the display panel to be tested for driving each sub-pixel in the main display area based on the main compensation target parameter corresponding to the current attenuation time.
In some possible embodiments, the display compensation method further includes: acquiring a first white point coordinate and a second white point coordinate of each display panel to be detected, of which the driving signals are regulated, wherein the first white point coordinate is the white point coordinate of the color gamut of the secondary display area, and the second white point coordinate is the white point coordinate of the color gamut of the main display area; if the number fraction of the non-standard display panel in a set of display panels to be tested exceeds a standard fraction threshold, adjusting a drive signal for driving each sub-pixel in a sub-display area of the non-standard display panel and/or adjusting a drive signal for driving each sub-pixel in a main display area of the non-standard display panel using the display compensation method according to any one of claims 1 to 14; the non-standard display panel is a display panel to be tested, the deviation of a first white point coordinate and a first standard white point coordinate exceeds a first deviation threshold range, and/or the deviation of a second white point coordinate and a second standard white point coordinate exceeds a second deviation threshold range, the first standard white point coordinate is a white point coordinate of a secondary standard color gamut of the sample panel, and the second standard white point coordinate is a white point coordinate of the standard color gamut.
In a third aspect, an embodiment of the present invention provides a display compensation apparatus for a display panel, where the display panel includes a main display area and an auxiliary display area, where at least a part of light transmittance of the auxiliary display area is higher than that of the main display area, and a color depth of the auxiliary display area is lower than that of the main display area, the apparatus including: the processing module is used for acquiring the color gamut parameters of the auxiliary display area, the main display area and the standard color gamut, and obtaining the color gamut parameters of the auxiliary standard color gamut corresponding to the auxiliary display area according to the color gamut parameters of the auxiliary display area, the color gamut parameters of the main display area and the color gamut parameters of the standard color gamut; the first adjusting module is used for adjusting driving signals for driving each sub-pixel in the auxiliary display area based on the color gamut parameters of the auxiliary standard color gamut and the color gamut parameters of the auxiliary display area so as to enable the color gamut of the auxiliary display area to tend to be the same as the auxiliary standard color gamut or the same as the auxiliary standard color gamut; and the second adjusting module is used for adjusting the driving signals for driving the sub-pixels in the main display area based on the color gamut parameters of the main display area and the color gamut parameters of the standard color gamut so that the color gamut of the main display area tends to the standard color gamut or is the same as the standard color gamut.
In a fourth aspect, an embodiment of the present invention provides a display panel, including the display compensation apparatus in the technical solution of the third aspect.
In a fifth aspect, an embodiment of the present invention provides a display compensation system, which is applied to display panels to be tested in the same batch, where the display panels to be tested in the same batch include at least one group of display panels to be tested, each display panel to be tested includes a main display area and an auxiliary display area, at least part of light transmittance of the auxiliary display area is higher than that of the main display area, and color depth of the auxiliary display area is lower than that of the main display area; the system comprises: the processing device is used for selecting one display panel to be tested from a group of display panels to be tested as a sample panel aiming at any group of display panels to be tested; a sample compensation device, configured to obtain an auxiliary compensation target parameter and a main compensation target parameter of a sample panel by using the display compensation method in the first aspect, where the auxiliary compensation target parameter is used to adjust a driving signal for driving each sub-pixel in the auxiliary display area, and the main compensation target parameter is used to adjust a driving signal for driving each sub-pixel in the main display area; and the to-be-detected compensation device is used for adjusting a driving signal for driving each sub-pixel in the auxiliary display area and a driving signal for driving each sub-pixel in the main display area in each to-be-detected display panel in a group of to-be-detected display panels respectively based on the auxiliary compensation target parameter and the main compensation target parameter of the sample panel.
The embodiment of the invention provides a display compensation method, a display compensation device, a display panel and a display compensation system. And obtaining the color gamut parameters of the auxiliary standard color gamut corresponding to the auxiliary display area according to the color gamut parameters of the auxiliary display area, the color gamut parameters of the main display area and the color gamut parameters of the standard color gamut. And adjusting the driving signals for driving the sub-pixels of the auxiliary display area by using the color gamut parameters of the auxiliary display area and the color gamut parameters of the auxiliary standard color gamut. And adjusting the driving signals for driving the sub-pixels of the main display area by using the color gamut parameters of the main display area and the color gamut parameters of the standard color gamut. Therefore, in the process of utilizing the color gamut to perform display compensation, under the condition that the secondary display area cannot directly use the color gamut parameters of the standard color gamut to perform compensation, the display compensation of the secondary display area is realized, and the phenomena of non-uniform monochrome and color distortion are reduced or even eliminated, so that the display effect is improved.
Drawings
The present invention will be better understood from the following description of specific embodiments thereof taken in conjunction with the accompanying drawings, in which like or similar reference characters designate like or similar features.
FIG. 1 is a diagram illustrating display regions of a display panel according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of display regions on another display panel according to an embodiment of the invention;
FIG. 3 is a flowchart illustrating a display compensation method according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a standard color gamut and a sub-standard color gamut in an embodiment of the invention;
FIG. 5 is a flowchart illustrating a compensation method according to another embodiment of the present invention;
FIG. 6 is a flow chart illustrating another compensation method according to an embodiment of the present invention;
FIG. 7 is a flow chart showing another compensation method according to another embodiment of the present invention;
fig. 8 is a schematic structural diagram of a display compensation device according to an embodiment of the invention.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention. The present invention is in no way limited to any specific configuration and algorithm set forth below, but rather covers any modification, replacement or improvement of elements, components or algorithms without departing from the spirit of the invention. In the drawings and the following description, well-known structures and techniques are not shown in order to avoid unnecessarily obscuring the present invention.
The embodiment of the invention provides a display compensation method, a display compensation device, a display panel and a display compensation system, which can be applied to a display panel with a main display area and an auxiliary display area, and are used for adjusting driving signals of sub-pixels of the main display area and driving signals of sub-pixels of the auxiliary display area in the display panel, namely compensating the driving signals of the sub-pixels in the main display area of the display panel and compensating the driving signals of the sub-pixels in the auxiliary display area of the display panel so as to reduce or even eliminate the color cast phenomenon displayed by the display panel.
The display panel has a main display area and a sub display area. The primary display area is adjacent to at least a portion of the secondary display area. The secondary display region has at least a portion of higher light transmittance than the primary display region. The color depth of the sub display area is lower than the color depth of the main display area.
In some examples, fig. 1 is a schematic diagram of each display area on a display panel according to an embodiment of the present invention. As shown in fig. 1, the sub display region 12 may include a light transmissive display region 121. The main display region 11 is adjacent to at least part of the light transmissive display region 121. The light transmittance of the light-transmissive display region 121 is higher than that of the main display region 11. The color depth of the light-transmissive display region 121 is lower than the color depth of the main display region 11. A camera, a sensor, and the like may be disposed below the light-transmissive display region 121, which is not limited herein.
In other examples, fig. 2 is a schematic diagram of each display area on another display panel according to another embodiment of the present invention. As shown in fig. 2, on the basis that the sub display region 12 includes the light-transmissive display region 121, the sub display region may further include a transition display region 122. The transition display region 122 is located between the light-transmissive display region 121 and the main display region 11. The main display area 11 is adjacent to at least part of the transitional display area 122. The transitional display region 122 may surround at least a portion of the light transmissive display region 122. The transmittance of the transition display region 122 is lower than that of the light-transmissive display region 122, and the transmittance of the transition display region 122 may be identical to that of the main display region 11. The color depth of the transitional display region 122 is lower than the color depth of the main display region 11, and the color depth of the transmissive display region 121 is lower than the color depth of the main display region 11.
FIG. 3 is a flowchart illustrating a display compensation method according to an embodiment of the invention. As shown in fig. 3, the display compensation method may include steps S201 to S203.
In step S201, the color gamut parameter of the secondary display area, the color gamut parameter of the primary display area, and the color gamut parameter of the standard color gamut are obtained, and the color gamut parameter of the secondary standard color gamut corresponding to the secondary display area is obtained according to the color gamut parameter of the secondary display area, the color gamut parameter of the primary display area, and the color gamut parameter of the standard color gamut.
The gamut parameters may characterize the gamut coverage area. In some examples, the gamut parameters may include color coordinates and/or color temperature.
The standard color gamut is a color gamut that can be used as a standard, for example, the standard color gamut may be a standard red green Blue (sRGB) color gamut, a National Television Standards Committee (NTSC) color gamut, an Adobe RGB color gamut, a P3 color gamut, or the like, and is not limited herein.
The color depth of the auxiliary display area is lower than that of the main display area, and the auxiliary display area cannot adjust the driving signal by directly utilizing the standard color gamut. The color gamut parameters of the sub standard color gamut can be obtained according to the color gamut parameters of the sub display area, the color gamut parameters of the main display area and the color gamut parameters of the standard color gamut. Wherein the sub standard color gamut is a color gamut which is obtained by reduction of the standard color gamut and corresponds to the sub display area.
Specifically, the auxiliary drift value of the color gamut parameter of the main display area relative to the color gamut parameter of the auxiliary display area can be calculated. The auxiliary shift value is the difference value between the color gamut parameter of the main display area and the color gamut parameter of the auxiliary display area. And based on the auxiliary drift value, performing reduction processing on the color gamut parameters of the standard color gamut, and taking the color gamut parameters of the standard color gamut after the reduction processing as the color gamut parameters of the auxiliary standard color gamut. Namely, the color gamut parameter of the sub-standard color gamut is the difference value between the color gamut parameter of the standard color gamut and the auxiliary drift value.
For example, the color gamut parameter is a color coordinate, and the color coordinate includes a red color coordinate, a green color coordinate, and a blue color coordinate. The auxiliary drift values include a red auxiliary drift value Δ R _ major/minor (x, y), a green auxiliary drift value Δ G _ major/minor (x, y), and a blue auxiliary drift value Δ B _ major/minor (x, y). The auxiliary drift value can be calculated by equations (1) to (3):
Δ R _ main/sub (x, y) ═ R _ main (x, y) -R _ minor (x, y) (1)
Δ G _ main/sub (x, y) ═ G _ main (x, y) -G _ minor (x, y) (2)
Δ B _ main/sub (x, y) ═ B _ main (x, y) -B _ minor (x, y) (3)
Wherein, R _ main (x, y) is the red color coordinate of the main display area, G _ main (x, y) is the green color coordinate of the main display area, and B _ main (x, y) is the blue color coordinate of the main display area; r _ minor (x, y) is a red color coordinate of the sub display region, G _ minor (x, y) is a green color coordinate of the sub display region, and B _ minor (x, y) is a blue color coordinate of the sub display region.
The color gamut parameters of the sub-standard color gamut can be obtained by equations (4) to (6):
r _ CIE' (x, y) ═ R _ CIE (x, y) - Δ R _ major/minor (x, y) (4)
G _ CIE' (x, y) ═ G _ CIE (x, y) - Δ G _ primary/secondary (x, y) (5)
B _ CIE' (x, y) ═ B _ CIE (x, y) - Δ B _ primary/secondary (x, y) (6)
Wherein, R _ CIE ' (x, y) is a red color coordinate of the sub-standard color gamut, G _ CIE ' (x, y) is a green color coordinate of the sub-standard color gamut, B _ CIE ' (x, y) is a blue color coordinate of the sub-standard color gamut, R _ CIE (x, y) is a red color coordinate of the standard color gamut, G _ CIE (x, y) is a green color coordinate of the standard color gamut, and B _ CIE (x, y) is a blue color coordinate of the standard color gamut.
In some examples, the gamut coverage area of the sub-standard color gamut may also be calculated, and may be obtained by equation (7):
CIE’＝(Rx×Gy+Ry×Bx+Gx×By-Rx×By-Gx×Ry-Bx×Gy)/2
(7)
fig. 4 is a schematic diagram of a standard color gamut and a sub-standard color gamut in an embodiment of the invention. As shown in fig. 4, in the color gamut coordinate system, CIE x is the horizontal axis of the color gamut coordinate system, and CIE y is the vertical axis of the color gamut coordinate system. The area covered by the solid line triangle is the area covered by the standard color gamut, and the area covered by the dotted line triangle is the area covered by the sub-standard color gamut. The sub-standard color gamut is obtained by reducing the standard color gamut.
In step S202, the drive signals for driving the sub-pixels in the sub-display area are adjusted based on the color gamut parameter of the sub-standard color gamut and the color gamut parameter of the sub-display area so that the color gamut of the sub-display area tends to be the same as or closer to the sub-standard color gamut.
Specifically, a secondary shift value of the color gamut parameter of the secondary display area relative to the color gamut parameter of the secondary standard color gamut may be calculated. The secondary shift value is the difference value between the color gamut parameter of the secondary display area and the color gamut parameter of the secondary standard color gamut. And calculating to obtain a secondary compensation target parameter by using the secondary drift value. And adjusting the driving signal for driving each sub-pixel in the sub-display region according to the sub-compensation target parameter.
For example, the color gamut parameter is a color coordinate, and the color coordinate includes a red color coordinate, a green color coordinate, and a blue color coordinate. The secondary drift values include a red secondary drift value, a green secondary drift value, and a blue secondary drift value.
The secondary drift value can be obtained by equations (8) to (10), and the secondary compensation target parameter can be obtained by equation (11):
ΔR’_minor(x，y)＝R_minor(x，y)-R_CIE’(x，y) (8)
ΔG’_minor(x，y)＝G_minor(x，y)-G_CIE’(x，y) (9)
ΔB’_minor(x，y)＝B_minor(x，y)-B_CIE’(x，y) (10)
W_minor(x，y)＝ΔR’_minor(x，y)+ΔG’_minor(x，y)+ΔB’_minor(x，y)
(11)
wherein, Δ R ' _ minor (x, y) is the red secondary drift value, Δ G ' _ minor (x, y) is the green secondary drift value, Δ B ' _ minor (x, y) is the blue secondary drift value, and W _ minor (x, y) is the secondary compensation target parameter.
In step S203, the driving signals for driving the sub-pixels in the main display area are adjusted based on the color gamut parameter of the main display area and the color gamut parameter of the standard color gamut so that the color gamut of the main display area tends to the standard color gamut or is the same as the standard color gamut.
Specifically, a main shift value of the color gamut parameter of the main display area relative to the color gamut parameter of the standard color gamut can be calculated. The main shift value is the difference value between the color gamut parameter of the main display area and the color gamut parameter of the standard color gamut. And calculating to obtain a main compensation target parameter by using the main drift value. And adjusting the driving signals for driving the sub-pixels in the main display area according to the main compensation target parameter.
For example, the color gamut parameter is a color coordinate, and the color coordinate includes a red color coordinate, a green color coordinate, and a blue color coordinate. The main drift values include a red main drift value, a green main drift value, and a blue main drift value. The main drift value can be obtained by equations (12) to (14), and the main compensation target parameter can be obtained by equation (15):
ΔR’_main(x，y)＝R_main(x，y)-R_CIE(x，y) (12)
ΔG’_main(x，y)＝G_main(x，y)-G_CIE(x，y) (13)
ΔB’_main(x，y)＝B_main(x，y)-B_CIE(x，y) (14)
W_main(x，y)＝ΔR’_main(x，y)+ΔG’_main(x，y)+ΔB’_main(x，y)
(15)
wherein, Δ R ' _ main (x, y) is a red main drift value, Δ G ' _ main (x, y) is a green main drift value, Δ B ' _ main (x, y) is a blue main drift value, and W _ main (x, y) is a main compensation target parameter.
It is worth mentioning that the color temperature and the color coordinate can be converted to each other, for example, the sub compensation target parameter of the color coordinate calculated by the equation (11) in the above embodiment can also be converted to the sub compensation target parameter of the color temperature by the equations (16) and (17):
n＝(x-0.3320)/(0.1858-y) (16)
CCT_minor＝437×n 3+3601×n 2+6831×n+5517 (17)
wherein x and y in equation (16) are coordinate values in W _ minor (x, y), and CCT _ minor in equation (17) is a secondary compensation target parameter of color temperature.
The primary compensation target parameter of the color coordinates calculated by equation (14) in the above embodiment may also be converted into the primary compensation target parameter of the color temperature by equations (18) and (19):
n＝(x-0.3320)/(0.1858-y) (18)
CCT_main＝437×n 3+3601×n 2+6831×n+5517 (19)
wherein, x and y in the formula (18) are coordinate values in W _ main (x, y), and CCT _ main in the formula (19) is a main compensation target parameter of color temperature.
In some examples, the driving signal in the above embodiments may be a source output voltage of the sub-pixel.
In an embodiment of the present invention, the display panel includes a main display area and a sub display area, and a color depth of the sub display area is lower than that of the main display area. And obtaining the color gamut parameters of the auxiliary standard color gamut corresponding to the auxiliary display area according to the color gamut parameters of the auxiliary display area, the color gamut parameters of the main display area and the color gamut parameters of the standard color gamut. And adjusting the driving signals for driving the sub-pixels of the auxiliary display area by using the color gamut parameters of the auxiliary display area and the color gamut parameters of the auxiliary standard color gamut. And adjusting the driving signals for driving the sub-pixels of the main display area by using the color gamut parameters of the main display area and the color gamut parameters of the standard color gamut. Therefore, in the process of utilizing the color gamut to perform display compensation, under the condition that the secondary display area can not directly use the color gamut parameters of the standard color gamut to perform compensation, the display compensation of the secondary display area is realized, the phenomena of monochrome unevenness and color distortion are reduced or even eliminated, and the display effect is improved.
In some examples, as shown in fig. 1, the secondary display region comprises a light transmissive display region. The display compensation for the transparent display area can be performed according to the display compensation method in the above embodiment, and will not be described herein again.
In other examples, as shown in fig. 2, the secondary display region includes a light transmissive display region and a transitional display region. The display compensation of the transmissive display region and the transitional display region may be performed according to the display compensation method in the above-described embodiment, respectively.
For example, for the transparent display area, the color gamut parameter of the first sub standard color gamut corresponding to the transparent display area is obtained according to the color gamut parameter of the transparent display area, the color gamut parameter of the main display area, and the color gamut parameter of the standard color gamut. And calculating to obtain a first secondary drift value of the color gamut parameter of the transparent display area relative to the color gamut parameter of the first secondary standard color gamut. And calculating to obtain a first secondary compensation target parameter by using the first secondary drift value. And adjusting the driving signals for driving the sub-pixels in the light-transmitting display area according to the first sub-compensation target parameter.
For the transitional display area, the color gamut parameter of the second sub-standard color gamut corresponding to the transitional display area is obtained according to the color gamut parameter of the transitional display area, the color gamut parameter of the main display area and the color gamut parameter of the standard color gamut. And calculating to obtain a second secondary shift value of the color gamut parameter of the transition display area relative to the color gamut parameter of the second secondary standard color gamut. And calculating to obtain a second secondary compensation target parameter by using the second secondary drift value. And adjusting the driving signals for driving the sub-pixels in the transitional display area according to the second sub-compensation target parameter.
FIG. 5 is a flowchart illustrating a compensation method according to another embodiment of the present invention. Fig. 5 is different from fig. 3 in that the display compensation method may further include steps S204 to S208 to implement a verification process for display compensation.
In step S204, the gamut parameters of the secondary display area are retrieved, and the first white point coordinates of the gamut of the secondary display area are determined.
After adjusting the drive signals driving the sub-pixels of the sub-display section, it can be verified whether the adjustment reaches a desired target. In the embodiment of the present invention, the first white point coordinate of the current color gamut of the secondary display area may be determined according to the currently re-acquired color gamut parameter of the secondary display area.
In step S205, if the deviation between the first white point coordinate and the first standard white point coordinate exceeds the first deviation threshold range, the color gamut parameter of the sub-standard color gamut corresponding to the sub-display area is updated according to the newly acquired color gamut parameter of the sub-display area, the color gamut parameter of the main display area, and the color gamut parameter of the standard color gamut.
Wherein the first deviation threshold range is a deviation threshold range of white point coordinates in which an influence of a compensation effect on the sub display area in the verification process is within an acceptable range. The first deviation threshold range may be set according to a work scenario or a work requirement, and is not limited herein.
The first standard white point coordinate is the white point coordinate of the sub-standard color gamut before each update. For example, after the first adjustment of the driving signals of the sub-pixels of the sub-display area, the first standard white point coordinate is the white point coordinate of the sub-standard color gamut obtained in the process of the first adjustment of the driving signals of the sub-pixels of the sub-display area. For another example, if the deviation between the first white point coordinate and the first standard white point coordinate is higher than the first deviation threshold after the first adjustment of the driving signals of the sub-pixels of the sub-display area, the driving signals of the sub-pixels of the sub-display area need to be adjusted for the second time, and correspondingly, the first standard white point coordinate is the white point coordinate of the sub-standard color gamut obtained in the process of adjusting the driving signals of the sub-pixels of the sub-display area for the second time.
In step S206, the driving signals for driving the sub-pixels in the sub-display area are adjusted based on the updated color gamut parameters of the sub-standard color gamut and the re-acquired color gamut parameters of the sub-display area until the deviation between the first white point coordinate and the first standard white point coordinate is within the first deviation threshold range.
The method comprises the steps of repeatedly obtaining the color gamut parameters of the auxiliary display area, the main display area and the standard color gamut, updating the color gamut parameters of the auxiliary standard color gamut corresponding to the auxiliary display area, adjusting driving signals for driving sub-pixels in the auxiliary display area based on the updated color gamut parameters of the auxiliary standard color gamut and the obtained color gamut parameters of the auxiliary display area, and the like until the deviation between the first white point coordinate and the first standard white point coordinate is within a first deviation threshold range, and ending the verification process of the auxiliary display area.
In step S207, the gamut parameters of the main display area are re-acquired, and the second white point coordinates of the gamut of the main display area are determined.
After adjusting the drive signals driving the sub-pixels of the main display area, it can be verified whether the adjustment reaches the intended target. In the embodiment of the present invention, the second white point coordinate of the current color gamut of the main display area may be determined according to the color gamut parameter of the main display area which is currently obtained again.
In step S208, if the deviation between the second white point coordinate and the second standard white point coordinate exceeds the second deviation threshold range, the driving signals for driving the sub-pixels in the main display area are adjusted based on the newly acquired color gamut parameter of the main display area and the color gamut parameter of the standard color gamut until the deviation between the second white point coordinate and the second standard white point coordinate is within the second deviation threshold range.
Wherein the second deviation threshold range is the deviation threshold range of the white point coordinate in which the influence of the compensation effect on the main display area in the verification process is within the acceptable range. The second deviation threshold range may be set according to a work scenario or a work requirement, and is not limited herein.
The second standard white point coordinate is the white point coordinate of the standard color gamut.
And if the deviation between the second white point coordinate and the second standard white point coordinate exceeds a second deviation threshold range, adjusting driving signals for driving each sub-pixel in the main display area and the like on the basis of the newly acquired color gamut parameter of the main display area and the color gamut parameter of the standard color gamut until the deviation between the second white point coordinate and the second standard white point coordinate is within the second deviation threshold range, and ending the verification process of the main display area.
The first deviation threshold range and the second deviation threshold range in the above-described embodiments may be the same or different. For example, the first deviation threshold range and the second deviation threshold range are [ -0.005, 0.005 ].
In some examples, as shown in fig. 1, the secondary display area includes a transparent display area, and the verification process of the display compensation of the transparent display area may be performed according to the verification process of the secondary display area of the display compensation method in the foregoing embodiments, and is not described herein again.
In other examples, as shown in fig. 2, the sub display region includes a transparent display region and a transitional display region, and the verification process of the display compensation of the transparent display region and the transitional display region may be performed according to the verification process of the sub display region of the display compensation method in the above embodiments.
For example, the first white point coordinate includes a first transmissive region white point coordinate of the transmissive display region and a first transition region white point coordinate of the transition display region. The first standard white point coordinates include first pass zone standard white point coordinates and first transition zone standard white point coordinates.
For the light-transmitting display area, if the deviation between the first light-transmitting area white point coordinate and the first light-transmitting area standard white point coordinate exceeds the first deviation threshold range, the color gamut parameter of the first sub standard color gamut corresponding to the light-transmitting display area is updated according to the newly acquired color gamut parameter of the light-transmitting display area, the color gamut parameter of the main display area and the color gamut parameter of the standard color gamut. And adjusting the driving signals for driving the sub-pixels in the light-transmitting display area based on the updated color gamut parameter of the first sub-standard color gamut and the newly acquired color gamut parameter of the light-transmitting display area until the deviation between the white point coordinate of the first light-transmitting area and the standard white point coordinate of the first light-transmitting area is within the first deviation threshold range. And the first light transmission area standard white point coordinate is the white point coordinate of the first sub standard color gamut before each update.
For the transition display area, if the deviation between the first transition area white point coordinate and the first transition area standard white point coordinate exceeds the first deviation threshold range, the color gamut parameter of the second sub-standard color gamut corresponding to the transition display area is updated according to the newly acquired color gamut parameter of the transition display area, the color gamut parameter of the main display area and the color gamut parameter of the standard color gamut. And adjusting the driving signals for driving the sub-pixels in the transitional display area based on the updated color gamut parameters of the second sub-standard color gamut and the newly acquired color gamut parameters of the transitional display area until the deviation between the white point coordinates of the first transitional area and the standard white point coordinates of the first transitional area is within the first deviation threshold range. And the first transition area standard white point coordinate is the white point coordinate of the second secondary standard color gamut before each update.
In some embodiments, the display of the display panel may decay over time. In order to be able to cope with the attenuation, in case of an attenuation, the drive signal may be adjusted to a drive signal corresponding to the current attenuation. Specifically, in step 201 in the above embodiment, the color gamut parameter of the secondary display area, the color gamut parameter of the primary display area, and the color gamut parameter of the standard color gamut may be periodically acquired according to a preset detection period. The steps of the display compensation method described above are performed at each detection period. For example, if the detection period is 1000 hours, the steps of the display compensation method may be performed on the display panel every 1000 hours.
In some examples, a first attenuation mapping relation of the attenuation time and the auxiliary compensation target parameter and a second attenuation mapping relation of the attenuation time and the main compensation target parameter are established according to each detection period and the color gamut parameter of the auxiliary display area, the color gamut parameter of the main display area and the color gamut parameter of the standard color gamut obtained in the detection period.
And each detection period can calculate the auxiliary compensation target parameter and the main compensation target parameter corresponding to the detection period. And establishing the first attenuation mapping relation and the second attenuation mapping relation according to the auxiliary compensation target parameter and the main compensation target parameter which are calculated in each detection period and correspond to the detection period, so that the first attenuation mapping relation and the second attenuation mapping relation can be conveniently applied to other panels in the same batch with the display panel.
It should be noted that the display compensation method in the above embodiments may be specifically executed by a device, a module, a unit, a chip, and the like having a processing function, and is not limited herein. For example, the Display compensation method in the above embodiments may be specifically executed by a driving chip disposed in the Display panel, for example, by a Display Driver Integrated Circuit (DDIC). For another example, the display compensation method in the above embodiments may be specifically executed by a device that can be externally connected to the display panel.
FIG. 6 is a flowchart illustrating another compensation method according to an embodiment of the present invention. The display compensation method is applied to display panels to be tested in the same batch, the display panels to be tested in the same batch comprise at least one group of display panels to be tested, and the group of display panels to be tested comprises a plurality of display panels to be tested. The display compensation method may include steps S301 to S303.
In step S301, for any one set of display panels to be tested, one display panel to be tested is selected from the set of display panels to be tested as a sample panel.
The display panel to be tested in the embodiment of the present invention has the same structure as the display panel in the above embodiment, and both include a main display area and an auxiliary display area, which are not described herein again.
Any one display panel to be tested can be selected from a group of display panels to be tested as a template panel. A selection rule may also be preset, and a display panel to be tested is selected from a group of display panels to be tested as a sample panel according to the selection rule, which is not limited herein.
In step S302, the sub compensation target parameter and the main compensation target parameter of the sample panel are obtained by using the display compensation method applied to the display panel in the above embodiment.
The sub compensation target parameter is used for adjusting a driving signal for driving each sub-pixel in the sub display area. The main compensation target parameter is used for adjusting a driving signal for driving each sub-pixel in the main display area. For specific contents of the display compensation method applied to the display panel, reference may be made to the related description of the above embodiments, which is not repeated herein.
In step S303, a driving signal for driving each sub-pixel in the sub-display area and a driving signal for driving each sub-pixel in the main display area in each display panel to be tested in a group of display panels to be tested are adjusted based on the sub-compensation target parameter and the main compensation target parameter of the sample panel, respectively.
And adjusting the driving signal of each display panel to be tested in the group of display panels to be tested by using the auxiliary compensation target parameter and the main compensation target parameter obtained based on the sample panel. Specifically, based on the secondary compensation target parameter of the sample panel, the driving signal for driving each sub-pixel in the secondary display area in each display panel to be tested in the group of display panels to be tested is adjusted, so that the color gamut of the secondary display area of each display panel to be tested tends to the secondary standard color gamut of the sample panel or is the same as the secondary standard color gamut of the sample panel; and adjusting the driving signals for driving the sub-pixels in the main display area in each display panel to be tested in the group of display panels to be tested based on the main compensation target parameters of the sample panel, so that the color gamut of the main display area of each display panel to be tested tends to be the standard color gamut or is the same as the standard color gamut.
In the embodiment of the invention, the auxiliary compensation target parameter and the main compensation target parameter of one sample panel are utilized to adjust the driving signals of the auxiliary display area and the driving signals of the main display area of a group of display panels to be tested so as to realize the display compensation of the group of display panels to be tested, and reduce or even eliminate the phenomena of monochromatic unevenness and color distortion of the group of display panels to be tested. Under the condition that the number of the display panels to be tested is large, the time for performing display compensation on each display panel to be tested can be shortened, and therefore the display compensation efficiency of the display panels to be tested is improved. Especially in the scene that a large number of display panels to be tested in batches need to be subjected to display compensation, the efficiency of the display compensation can be improved more obviously.
In some embodiments, after the driving signal of each display panel to be tested in the group of display panels to be tested is adjusted in step S303, the display compensation effect may also be verified. Specifically, the first white point coordinate and the second white point coordinate of each display panel to be tested, of which the driving signals are adjusted, may be obtained. If the number ratio of the non-standard display panel in the set of display panels to be tested exceeds the standard ratio threshold, the display compensation method applied to the display panel in the above embodiment is utilized to adjust the driving signal for driving each sub-pixel in the sub-display area of the non-standard display panel and/or adjust the driving signal for driving each sub-pixel in the main display area of the non-standard display panel.
Wherein the first white point coordinate is a white point coordinate of a color gamut of the secondary display area. The second white point coordinate is the white point coordinate of the color gamut of the primary display area.
The non-standard display panel is a display panel to be tested, wherein the deviation of the first white point coordinate and the first standard white point coordinate exceeds a first deviation threshold range, and/or the deviation of the second white point coordinate and the second standard white point coordinate exceeds a second deviation threshold range. The related contents of the first deviation threshold range and the second deviation threshold range can be referred to the related description in the above embodiments, and are not described herein again.
The first standard white point coordinate is the white point coordinate of the secondary standard color gamut of the sample panel. The second standard white point coordinate is the white point coordinate of the standard color gamut.
The standard ratio threshold is the maximum value of the number ratio of the acceptable non-standard display panels in a group of display panels to be tested. The standard proportion threshold may be set according to a working scene and a working requirement, and is not limited herein.
FIG. 7 is a flowchart illustrating another compensation method according to another embodiment of the present invention. Fig. 7 is different from fig. 6 in that the display compensation method shown in fig. 7 may further include steps S304 to S307.
In step S304, a secondary compensation target parameter corresponding to the current attenuation time of the display panel to be tested is searched according to a preset first attenuation mapping relationship.
The first attenuation mapping relation is a mapping relation between attenuation time and a secondary compensation target parameter. In some examples, a display compensation experiment in the attenuation process may be performed on the sample panel, a secondary compensation target parameter obtained by performing display compensation on each attenuation time and each attenuation time is recorded, and a mapping relationship between each recorded attenuation time and the secondary compensation target parameter obtained by performing display compensation on each attenuation time, that is, a first attenuation mapping relationship is established.
In step S305, a driving signal of the display panel under test for driving each sub-pixel in the sub-display region is adjusted based on the sub-compensation target parameter corresponding to the current decay time.
If the display panel to be tested has been operated for a period of time, the secondary compensation target parameter corresponding to the current attenuation time of the display panel to be tested can be found in the first attenuation mapping relationship. And adjusting the driving signal of the display panel to be tested for driving each sub-pixel in the auxiliary display area based on the auxiliary compensation target parameter so that the color gamut of the auxiliary display area of the display panel to be tested is close to or equal to the auxiliary standard color gamut of the sample panel.
In step S306, a main compensation target parameter corresponding to the current attenuation time of the display panel to be detected is searched according to a preset second attenuation mapping relationship.
The second attenuation mapping relation is a mapping relation between attenuation time and a main compensation target parameter. In some examples, a display compensation experiment in the attenuation process may be performed on the sample panel, a main compensation target parameter obtained by performing display compensation on each attenuation time and each attenuation time is recorded, and a mapping relationship between each recorded attenuation time and the main compensation target parameter obtained by performing display compensation on each attenuation time, that is, a second attenuation mapping relationship is established.
In step S307, a driving signal of the display panel to be tested for driving each sub-pixel in the main display area is adjusted based on the main compensation target parameter corresponding to the current decay time.
If the display panel to be tested has been operated for a period of time, the main compensation target parameter corresponding to the current attenuation time of the display panel to be tested can be found in the second attenuation mapping relation. And adjusting the driving signal of the display panel to be tested for driving each sub-pixel in the main display area based on the auxiliary compensation target parameter so as to enable the color gamut of the main display area of the display panel to be tested to be close to or equal to the standard color gamut.
As the operation time goes by, the display of the display panel may be degraded. By using the sub compensation target parameter and the main compensation target parameter used in the initial period, the effect of performing display compensation on the driving signal of each sub-pixel in the sub display region and the driving signal of each sub-pixel in the main display region of the display panel in which attenuation occurs will be reduced. By utilizing the preset first attenuation mapping relation and the second attenuation mapping relation, the auxiliary compensation target parameter and the main compensation target parameter corresponding to the current attenuation time can be adopted to carry out display compensation on the driving signals of the sub-pixels in the auxiliary display area and the driving signals of the sub-pixels in the main display area of the display panel with attenuation, the display compensation effect can be kept, and the phenomenon that the display compensation effect is reduced or avoided.
Fig. 8 is a schematic structural diagram of a display compensation device according to an embodiment of the invention. The display compensation device is used for a display panel, and the display panel comprises a main display area and an auxiliary display area. The secondary display area has at least a portion of higher light transmittance than the primary display area, and the secondary display area has a color depth lower than the primary display area. As shown in fig. 8, the display compensation apparatus 400 may include a processing module 401, a first adjusting module 402, and a second adjusting module 403.
The processing module 401 is configured to obtain a color gamut parameter of the secondary display area, a color gamut parameter of the primary display area, and a color gamut parameter of the standard color gamut, and obtain a color gamut parameter of the secondary standard color gamut corresponding to the secondary display area according to the color gamut parameter of the secondary display area, the color gamut parameter of the primary display area, and the color gamut parameter of the standard color gamut.
And a first adjusting module 402, configured to adjust a driving signal for driving each sub-pixel in the sub-display area based on the color gamut parameter of the sub-standard color gamut and the color gamut parameter of the sub-display area, so that the color gamut of the sub-display area tends to be the same as or close to the sub-standard color gamut.
And a second adjusting module 403, configured to adjust a driving signal for driving each sub-pixel in the main display area based on the color gamut parameter of the main display area and the color gamut parameter of the standard color gamut, so that the color gamut of the main display area tends to the standard color gamut or is the same as the standard color gamut.
In some examples, the gamut parameters include color coordinates and/or color temperature.
In an embodiment of the present invention, the display panel includes a main display area and a sub display area, and a color depth of the sub display area is lower than that of the main display area. And obtaining the color gamut parameters of the auxiliary standard color gamut corresponding to the auxiliary display area according to the color gamut parameters of the auxiliary display area, the color gamut parameters of the main display area and the color gamut parameters of the standard color gamut. And adjusting the driving signals for driving the sub-pixels of the auxiliary display area by using the color gamut parameters of the auxiliary display area and the color gamut parameters of the auxiliary standard color gamut. And adjusting the driving signals for driving the sub-pixels of the main display area by using the color gamut parameters of the main display area and the color gamut parameters of the standard color gamut. Therefore, in the process of utilizing the color gamut to perform display compensation, under the condition that the secondary display area can not directly use the color gamut parameters of the standard color gamut to perform compensation, the display compensation of the secondary display area is realized, the phenomena of monochrome unevenness and color distortion are reduced or even eliminated, and the display effect is improved.
In some examples, the processing module 401 may be specifically configured to: calculating to obtain an auxiliary drift value of the color gamut parameter of the main display area relative to the color gamut parameter of the auxiliary display area; and based on the auxiliary drift value, performing reduction processing on the color gamut parameters of the standard color gamut, and taking the color gamut parameters of the standard color gamut after the reduction processing as the color gamut parameters of the auxiliary standard color gamut.
In some examples, the first adjustment module 402 may be specifically configured to: calculating to obtain a secondary shift value of the color gamut parameter of the secondary display area relative to the color gamut parameter of the secondary standard color gamut; calculating to obtain a secondary compensation target parameter by using the secondary drift value; and adjusting the driving signal for driving each sub-pixel in the sub-display region according to the sub-compensation target parameter.
In some examples, the second adjusting module 403 may be specifically configured to: calculating to obtain a main drift value of the color gamut parameter of the main display area relative to the color gamut parameter of the standard color gamut; calculating to obtain a main compensation target parameter by using the main drift value; adjusting drive signals for driving the sub-pixels in the main display area according to the main compensation target parameter
In some embodiments, the secondary display region comprises a light transmissive display region having a higher light transmittance than the primary display region
In other embodiments, the sub-display region includes a light-transmissive display region having a higher transmittance than the main display region and a transition display region between the light-transmissive display region and the main display region having a lower transmittance than the light-transmissive display region.
Correspondingly, the processing module 401 may specifically be configured to: obtaining a color gamut parameter of a first sub standard color gamut corresponding to the light-transmitting display area according to the color gamut parameter of the light-transmitting display area, the color gamut parameter of the main display area and the color gamut parameter of the standard color gamut; and obtaining the color gamut parameter of the second sub standard color gamut corresponding to the transitional display area according to the color gamut parameter of the transitional display area, the color gamut parameter of the main display area and the color gamut parameter of the standard color gamut.
Correspondingly, the first adjusting module 402 may be specifically configured to: calculating to obtain a first secondary drift value of the color gamut parameter of the transparent display area relative to the color gamut parameter of the first secondary standard color gamut and a second secondary drift value of the color gamut parameter of the transitional display area relative to the color gamut parameter of the second secondary standard color gamut; calculating to obtain a first secondary compensation target parameter by using the first secondary drift value; calculating to obtain a second secondary compensation target parameter by using the second secondary drift value; adjusting a driving signal for driving each sub-pixel in the light-transmitting display area according to the first sub-compensation target parameter; and adjusting the driving signals for driving the sub-pixels in the transitional display area according to the second sub-compensation target parameter.
In some embodiments, the processing module 401 is further configured to: re-acquiring the color gamut parameters of the secondary display area, and determining the first white point coordinates of the color gamut of the secondary display area; and if the deviation between the first white point coordinate and the first standard white point coordinate exceeds the first deviation threshold range, updating the color gamut parameter of the auxiliary standard color gamut corresponding to the auxiliary display area according to the newly acquired color gamut parameter of the auxiliary display area, the color gamut parameter of the main display area and the color gamut parameter of the standard color gamut.
Wherein the first standard white point coordinate is the white point coordinate of the sub-standard color gamut before each update.
The first adjusting module 402 is further configured to: and adjusting the driving signals for driving the sub-pixels in the secondary display area based on the updated color gamut parameters of the secondary standard color gamut and the newly acquired color gamut parameters of the secondary display area until the deviation between the first white point coordinate and the first standard white point coordinate is within the first deviation threshold range.
In some examples, the secondary display region comprises a light transmissive display region.
In other examples, the sub display region includes a light-transmissive display region having a higher transmittance than the main display region and a transition display region between the light-transmissive display region and the main display region having a lower transmittance than the light-transmissive display region.
Correspondingly, the processing module 401 may specifically be configured to: if the deviation between the first light-transmitting area white point coordinate and the first light-transmitting area standard white point coordinate exceeds the first deviation threshold range, updating the color gamut parameter of the first auxiliary standard color gamut corresponding to the light-transmitting display area according to the newly acquired color gamut parameter of the light-transmitting display area, the color gamut parameter of the main display area and the color gamut parameter of the standard color gamut; and if the deviation between the first transition area white point coordinate and the first transition area standard white point coordinate exceeds the first deviation threshold range, updating the color gamut parameter of the second sub-standard color gamut corresponding to the transition display area according to the newly acquired color gamut parameter of the transition display area, the color gamut parameter of the main display area and the color gamut parameter of the standard color gamut.
And the first light transmission area standard white point coordinate is the white point coordinate of the first sub standard color gamut before each update. The first transition region standard white point coordinate is the white point coordinate of the second sub-standard color gamut before each update. The first white point coordinates include a first transmissive region white point coordinate of the transmissive display region and a first transition region white point coordinate of the transition display region. The first standard white point coordinates include first transmissive area standard white point coordinates and first transitional area standard white point coordinates.
Correspondingly, the first adjusting module 402 may be specifically configured to: based on the updated color gamut parameter of the first sub standard color gamut and the newly acquired color gamut parameter of the light-transmitting display area, adjusting a driving signal for driving each sub-pixel in the light-transmitting display area until the deviation between the white point coordinate of the first light-transmitting area and the standard white point coordinate of the first light-transmitting area is within a first deviation threshold range; and adjusting the driving signals for driving the sub-pixels in the transitional display area based on the updated color gamut parameters of the second sub-standard color gamut and the newly acquired color gamut parameters of the transitional display area until the deviation between the white point coordinates of the first transitional area and the standard white point coordinates of the first transitional area is within the first deviation threshold range.
In other embodiments, the processing module 401 is further configured to: and re-acquiring the color gamut parameters of the main display area, and determining the second white point coordinate of the color gamut of the main display area.
The second determining module 403 is further configured to: and if the deviation between the second white point coordinate and the second standard white point coordinate exceeds a second deviation threshold range, adjusting the driving signals for driving the sub-pixels in the main display area based on the newly acquired color gamut parameter of the main display area and the color gamut parameter of the standard color gamut until the deviation between the second white point coordinate and the second standard white point coordinate is within the second deviation threshold range.
Wherein the second standard white point coordinate is a white point coordinate of the standard color gamut.
In some examples, the processing module 401 may be specifically configured to: and periodically acquiring the color gamut parameters of the auxiliary display area, the color gamut parameters of the main display area and the color gamut parameters of the standard color gamut according to a preset detection period.
In some examples, the display compensation apparatus may further include a map creation module.
The mapping establishment module may be specifically configured to: and establishing a first attenuation mapping relation between the attenuation time and the auxiliary compensation target parameter and a second attenuation mapping relation between the attenuation time and the main compensation target parameter according to each detection period, and the color gamut parameter of the auxiliary display area, the color gamut parameter of the main display area and the color gamut parameter of the standard color gamut obtained in the detection period.
The sub compensation target parameter is used for adjusting a driving signal for driving each sub-pixel in the sub display area. The main compensation target parameter is used for adjusting a driving signal for driving each sub-pixel in the main display area.
The display compensation means in the above-described embodiments may be a module or unit having a processing function such as a DDIC that can be mounted in the display panel.
An embodiment of the present invention may further provide a display panel, where the display panel includes the display compensation device in the foregoing embodiment. The display compensation apparatus can implement the display compensation method in the above-described embodiment.
The display panel may include, but is not limited to, an Organic Light-Emitting Diode (OLED) display panel, and the like.
An embodiment of the present invention may further provide a display device, which includes the display panel in the above embodiment. The display device may include, but is not limited to, any product or component with a display function, such as electronic paper, a mobile phone, a tablet computer, a television, a notebook computer, a digital photo frame, and a navigator.
The embodiment of the invention also provides a display compensation system. The display compensation system can be applied to display panels to be tested in the same batch. The display panels to be tested in the same batch comprise at least one group of display panels to be tested. The display panel to be tested comprises a main display area and an auxiliary display area. The secondary display region has at least a portion of higher light transmittance than the primary display region. The color depth of the sub display area is lower than that of the main display area. The display compensation system may include a processing device, a sample compensation device, and a compensation device under test.
And the processing device is used for selecting one display panel to be tested from a group of display panels to be tested as a sample panel aiming at any group of display panels to be tested.
The processing device may be a device having a processing function. The functions of the processing device may also be integrated into the sample compensation device, which is not limited herein.
And the sample compensation device is used for obtaining the auxiliary compensation target parameter and the main compensation target parameter of the sample panel by using the display compensation method applied to the display panel in the embodiment.
The sample compensation device may be a module, a unit, a chip, etc. having a processing function in the sample panel, or may be a device that can be externally connected to the sample panel, and is not limited herein.
The sub compensation target parameter is used for adjusting a driving signal for driving each sub-pixel in the sub display area. The main compensation target parameter is used for adjusting a driving signal for driving each sub-pixel in the main display area.
And the to-be-detected compensation device is used for adjusting a driving signal for driving each sub-pixel in the auxiliary display area and a driving signal for driving each sub-pixel in the main display area in each to-be-detected display panel in a group of to-be-detected display panels respectively based on the auxiliary compensation target parameter and the main compensation target parameter of the sample panel.
The compensation device to be tested may be a module, a unit, a chip, etc. having a processing function in the display panel to be tested, or may be a device that can be externally connected to the display panel to be tested, which is not limited herein.
In the embodiment of the invention, the auxiliary compensation target parameter and the main compensation target parameter of one sample panel are utilized to adjust the driving signals of the auxiliary display area and the driving signals of the main display area of a group of display panels to be tested so as to realize the display compensation of the group of display panels to be tested, and reduce or even eliminate the phenomena of monochromatic unevenness and color distortion of the group of display panels to be tested. Under the condition that the number of the display panels to be tested is large, the time for performing display compensation on each display panel to be tested can be shortened, and therefore the display compensation efficiency of the display panels to be tested is improved. Especially in the scene that a large number of display panels to be tested in batches need to be subjected to display compensation, the efficiency of the display compensation can be improved more obviously.
In some examples, the compensation device to be tested may be further configured to search a secondary compensation target parameter corresponding to the current attenuation time of the display panel to be tested according to a preset first attenuation mapping relationship, where the first attenuation mapping relationship is a mapping relationship between the attenuation time and the secondary compensation target parameter; adjusting a driving signal of the display panel to be tested, which is used for driving each sub-pixel in the auxiliary display area, based on the auxiliary compensation target parameter corresponding to the current attenuation time; searching a main compensation target parameter corresponding to the current attenuation time of the display panel to be detected according to a preset second attenuation mapping relation, wherein the second attenuation mapping relation is the mapping relation between the attenuation time and the main compensation target parameter; and adjusting a driving signal of the display panel to be tested for driving each sub-pixel in the main display area based on the main compensation target parameter corresponding to the current attenuation time.
In some examples, the compensation device under test may further be configured to obtain a first white point coordinate and a second white point coordinate of each display panel under test whose driving signals are adjusted; if the number ratio of the non-standard display panel in the set of display panels to be tested exceeds the standard ratio threshold, the display compensation method applied to the display panel in the above embodiment is utilized to adjust the driving signal for driving each sub-pixel in the sub-display area of the non-standard display panel and/or adjust the driving signal for driving each sub-pixel in the main display area of the non-standard display panel.
Wherein the first white point coordinate is a white point coordinate of a color gamut of the secondary display area. The second white point coordinate is the white point coordinate of the color gamut of the primary display area. The non-standard display panel is a display panel to be tested, wherein the deviation of the first white point coordinate and the first standard white point coordinate exceeds a first deviation threshold range, and/or the deviation of the second white point coordinate and the second standard white point coordinate exceeds a second deviation threshold range. The first standard white point coordinate is the white point coordinate of the secondary standard color gamut of the sample panel. The second standard white point coordinate is the white point coordinate of the standard color gamut.
It should be clear that the embodiments in this specification are described in a progressive manner, and the same or similar parts in the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. For device embodiments, display panel embodiments, display device embodiments and system embodiments, reference may be made to the description of the method embodiments for relevant points. The present invention is not limited to the specific steps and structures described above and shown in the drawings. Those skilled in the art may make various changes, modifications and additions or change the order between the steps after appreciating the spirit of the invention. Also, a detailed description of known process techniques is omitted herein for the sake of brevity.
The functional blocks shown in the above-described structural block diagrams may be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic circuit, an Application Specific Integrated Circuit (ASIC), suitable firmware, plug-in, function card, or the like. When implemented in software, the elements of the invention are the programs or code segments used to perform the required tasks. The program or code segments can be stored in a machine-readable medium or transmitted by a data signal carried in a carrier wave over a transport medium or communication link. A "machine-readable medium" may include any medium that can store or transport information. Examples of a machine-readable medium include electronic circuits, semiconductor memory devices, ROM, flash memory, Erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, Radio Frequency (RF) links, and so forth. The code segments may be downloaded via computer networks such as the internet, intranet, etc.
It will be appreciated by persons skilled in the art that the above embodiments are illustrative and not restrictive. Different features which are present in different embodiments may be combined to advantage. Other variations to the disclosed embodiments can be understood and effected by those skilled in the art upon studying the drawings, the specification, and the claims. In the claims, the term "comprising" does not exclude other means or steps; the indefinite article "a" does not exclude a plurality; the terms "first" and "second" are used to denote a name and not to denote any particular order. Any reference signs in the claims shall not be construed as limiting the scope. The functions of the various parts appearing in the claims may be implemented by a single hardware or software module. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

Claims (10)

1. A display compensation method for a display panel, the display panel including a main display region and a sub display region, the sub display region having at least a portion of a higher transmittance than the main display region, the sub display region having a lower color depth than the main display region, the method comprising:
obtaining the color gamut parameter of the auxiliary display area, the color gamut parameter of the main display area and the color gamut parameter of the standard color gamut, and obtaining the color gamut parameter of the auxiliary standard color gamut corresponding to the auxiliary display area according to the color gamut parameter of the auxiliary display area, the color gamut parameter of the main display area and the color gamut parameter of the standard color gamut;
adjusting a driving signal for driving each sub-pixel in the sub-display area based on the color gamut parameter of the sub-standard color gamut and the color gamut parameter of the sub-display area so that the color gamut of the sub-display area tends to be the same as or close to the sub-standard color gamut;
and adjusting the driving signals for driving the sub-pixels in the main display area based on the color gamut parameters of the main display area and the color gamut parameters of the standard color gamut so that the color gamut of the main display area tends to be the standard color gamut or is the same as the standard color gamut.
2. The method according to claim 1, wherein obtaining the color gamut parameter of the sub-standard color gamut corresponding to the sub-display area according to the color gamut parameter of the sub-display area, the color gamut parameter of the main display area, and the color gamut parameter of the standard color gamut comprises:
calculating to obtain an auxiliary drift value of the color gamut parameter of the main display area relative to the color gamut parameter of the auxiliary display area;
based on the auxiliary drift value, performing reduction processing on the color gamut parameter of the standard color gamut, and taking the color gamut parameter of the standard color gamut after the reduction processing as the color gamut parameter of the auxiliary standard color gamut;
preferably, the color gamut parameters comprise color coordinates and/or color temperature;
preferably, the sub display region includes a light-transmissive display region having a higher light transmittance than the main display region;
preferably, the auxiliary display area comprises a light-transmitting display area and a transition display area located between the light-transmitting display area and the main display area, the light transmittance of the light-transmitting display area is higher than that of the main display area, and the light transmittance of the transition display area is lower than that of the light-transmitting display area;
the obtaining of the color gamut parameter of the sub standard color gamut corresponding to the sub display area according to the color gamut parameter of the sub display area, the color gamut parameter of the main display area, and the color gamut parameter of the standard color gamut includes:
obtaining a color gamut parameter of a first sub standard color gamut corresponding to the light-transmitting display area according to the color gamut parameter of the light-transmitting display area, the color gamut parameter of the main display area and the color gamut parameter of the standard color gamut;
and obtaining the color gamut parameter of the second secondary standard color gamut corresponding to the transition display area according to the color gamut parameter of the transition display area, the color gamut parameter of the main display area and the color gamut parameter of the standard color gamut.
3. The method according to claim 1, wherein the adjusting the driving signals for driving the sub-pixels in the sub-display area based on the color gamut parameters of the sub-standard color gamut and the color gamut parameters of the sub-display area comprises:
calculating to obtain a secondary drift value of the color gamut parameter of the secondary display area relative to the color gamut parameter of the secondary standard color gamut;
calculating to obtain a secondary compensation target parameter by using the secondary drift value;
adjusting a driving signal for driving each sub-pixel in the sub-display area according to the sub-compensation target parameter;
preferably, the sub display region includes a light-transmissive display region having a higher light transmittance than the main display region;
preferably, the auxiliary display area comprises a light-transmitting display area and a transition display area located between the light-transmitting display area and the main display area, the light transmittance of the light-transmitting display area is higher than that of the main display area, and the light transmittance of the transition display area is lower than that of the light-transmitting display area;
the adjusting the driving signal for driving each sub-pixel in the sub-display area based on the color gamut parameter of the sub-standard color gamut and the color gamut parameter of the sub-display area comprises:
calculating to obtain a first secondary shift value of the color gamut parameter of the light-transmitting display area relative to the color gamut parameter of the first secondary standard color gamut and a second secondary shift value of the color gamut parameter of the transitional display area relative to the color gamut parameter of the second secondary standard color gamut;
calculating to obtain a first secondary compensation target parameter by using the first secondary drift value;
calculating to obtain a second secondary compensation target parameter by using the second secondary drift value;
adjusting a driving signal for driving each sub-pixel in the light-transmitting display area according to the first sub-compensation target parameter;
adjusting a driving signal for driving each sub-pixel in the transition display area according to the second secondary compensation target parameter;
preferably, after the adjusting the driving signal for driving each sub-pixel in the sub-display area, the method further includes:
re-acquiring the color gamut parameters of the secondary display area, and determining the first white point coordinate of the color gamut of the secondary display area;
if the deviation between the first white point coordinate and the first standard white point coordinate exceeds a first deviation threshold range, updating the color gamut parameter of the auxiliary standard color gamut corresponding to the auxiliary display area according to the newly acquired color gamut parameter of the auxiliary display area, the color gamut parameter of the main display area and the color gamut parameter of the standard color gamut, wherein the first standard white point coordinate is the white point coordinate of the auxiliary standard color gamut before each updating;
based on the updated color gamut parameters of the secondary standard color gamut and the newly acquired color gamut parameters of the secondary display area, adjusting driving signals for driving the sub-pixels in the secondary display area until the deviation between the first white point coordinate and the first standard white point coordinate is within the first deviation threshold range;
preferably, if the deviation between the first white point coordinate and the first standard white point coordinate exceeds a first deviation threshold range, updating the color gamut parameter of the sub-standard color gamut corresponding to the sub-display area according to the newly acquired color gamut parameter of the sub-display area, the color gamut parameter of the main display area, and the color gamut parameter of the standard color gamut includes:
if the deviation between the first light-transmitting area white point coordinate and the first light-transmitting area standard white point coordinate exceeds the first deviation threshold range, updating the color gamut parameter of the first sub standard color gamut corresponding to the light-transmitting display area according to the newly acquired color gamut parameter of the light-transmitting display area, the color gamut parameter of the main display area and the color gamut parameter of the standard color gamut, wherein the first light-transmitting area standard white point coordinate is the white point coordinate of the first sub standard color gamut before each updating;
if the deviation between the first transition area white point coordinate and a first transition area standard white point coordinate exceeds the first deviation threshold range, updating the color gamut parameter of a second sub-standard color gamut corresponding to the transition display area according to the newly acquired color gamut parameter of the transition display area, the color gamut parameter of the main display area and the color gamut parameter of the standard color gamut, wherein the first transition area standard white point coordinate is the white point coordinate of the second sub-standard color gamut before each updating;
the auxiliary display area comprises a light-transmitting display area and a transition display area positioned between the light-transmitting display area and the main display area, the light transmittance of the light-transmitting display area is higher than that of the main display area, the light transmittance of the transition display area is lower than that of the light-transmitting display area, the first white point coordinate comprises a first light-transmitting area white point coordinate of the light-transmitting display area and a first transition area white point coordinate of the transition display area, and the first standard white point coordinate comprises a first light-transmitting area standard white point coordinate and a first transition area standard white point coordinate;
preferably, the adjusting the driving signals for driving the sub-pixels in the secondary display area based on the updated color gamut parameters of the secondary standard color gamut and the newly acquired color gamut parameters of the secondary display area until the deviation between the first white point coordinate and the first standard white point coordinate is within the first deviation threshold range includes:
based on the updated color gamut parameter of the first sub standard color gamut and the newly acquired color gamut parameter of the light-transmitting display area, adjusting a driving signal for driving each sub-pixel in the light-transmitting display area until the deviation between the first light-transmitting area white point coordinate and the first light-transmitting area standard white point coordinate is within the first deviation threshold range;
and adjusting the driving signals for driving the sub-pixels in the transition display area based on the updated color gamut parameters of the second sub-standard color gamut and the newly acquired color gamut parameters of the transition display area until the deviation between the white point coordinates of the first transition area and the standard white point coordinates of the first transition area is within the first deviation threshold range.
4. The method of claim 1, wherein adjusting the driving signals for driving the sub-pixels in the main display area based on the color gamut parameters of the main display area and the color gamut parameters of the standard color gamut comprises:
calculating to obtain a main drift value of the color gamut parameter of the main display area relative to the color gamut parameter of the standard color gamut;
calculating to obtain a main compensation target parameter by using the main drift value;
adjusting a driving signal for driving each sub-pixel in the main display area according to the main compensation target parameter;
preferably, after the adjusting the driving signals for driving the sub-pixels in the main display area, the method further includes:
re-acquiring the color gamut parameters of the main display area, and determining a second white point coordinate of the color gamut of the main display area;
if the deviation between the second white point coordinate and the second standard white point coordinate exceeds a second deviation threshold range, adjusting a driving signal for driving each sub-pixel in the main display area based on the newly acquired color gamut parameter of the main display area and the color gamut parameter of the standard color gamut until the deviation between the second white point coordinate and the second standard white point coordinate is within the second deviation threshold range, wherein the second standard white point coordinate is the white point coordinate of the standard color gamut.
5. The method according to claim 1, wherein the obtaining of the color gamut parameter of the secondary display area, the color gamut parameter of the primary display area and the color gamut parameter of the standard color gamut comprises:
periodically acquiring the color gamut parameters of the auxiliary display area, the color gamut parameters of the main display area and the color gamut parameters of the standard color gamut according to a preset detection period;
preferably, the method further comprises:
establishing a first attenuation mapping relation between attenuation time and an auxiliary compensation target parameter and a second attenuation mapping relation between the attenuation time and a main compensation target parameter according to each detection period and the color gamut parameters of the auxiliary display area, the main display area and the standard color gamut obtained in the detection period;
the auxiliary compensation target parameter is used for adjusting a driving signal for driving each sub-pixel in the auxiliary display area, and the main compensation target parameter is used for adjusting a driving signal for driving each sub-pixel in the main display area.
6. The display compensation method is characterized by being applied to display panels to be tested in the same batch, wherein the display panels to be tested in the same batch comprise at least one group of display panels to be tested, each display panel to be tested comprises a main display area and an auxiliary display area, at least part of light transmittance of the auxiliary display area is higher than that of the main display area, and color depth of the auxiliary display area is lower than that of the main display area;
the method comprises the following steps:
selecting one display panel to be tested from a group of display panels to be tested as a sample panel aiming at any group of display panels to be tested;
obtaining a sub compensation target parameter and a main compensation target parameter of the sample panel by using the display compensation method according to any one of claims 1 to 5, wherein the sub compensation target parameter is used for adjusting a driving signal for driving each sub-pixel in the sub display area, and the main compensation target parameter is used for adjusting a driving signal for driving each sub-pixel in the main display area;
and adjusting a driving signal for driving each sub-pixel in the auxiliary display area and a driving signal for driving each sub-pixel in the main display area in each display panel to be tested in the group of display panels to be tested based on the auxiliary compensation target parameter and the main compensation target parameter of the sample panel respectively.
7. The method of claim 6, further comprising:
searching a secondary compensation target parameter corresponding to the current attenuation time of the display panel to be detected according to a preset first attenuation mapping relation, wherein the first attenuation mapping relation is the mapping relation between the attenuation time and the secondary compensation target parameter;
adjusting a driving signal of the display panel to be tested for driving each sub-pixel in the auxiliary display area based on an auxiliary compensation target parameter corresponding to the current attenuation time;
searching a main compensation target parameter corresponding to the current attenuation time of the display panel to be detected according to a preset second attenuation mapping relation, wherein the second attenuation mapping relation is the mapping relation between the attenuation time and the main compensation target parameter;
adjusting a driving signal of the display panel to be tested for driving each sub-pixel in the main display area based on a main compensation target parameter corresponding to the current attenuation time;
preferably, the method further comprises:
acquiring a first white point coordinate and a second white point coordinate of each display panel to be detected, of which the driving signals are adjusted, wherein the first white point coordinate is a white point coordinate of the color gamut of the secondary display area, and the second white point coordinate is a white point coordinate of the color gamut of the primary display area;
if the number fraction of non-standard display panels in the set of display panels to be tested exceeds a standard fraction threshold, adjusting a driving signal for driving each sub-pixel in the sub-display area of the non-standard display panel and/or adjusting a driving signal for driving each sub-pixel in the main display area of the non-standard display panel using the display compensation method according to any one of claims 1 to 5;
the non-standard display panel is a display panel to be tested, wherein the deviation of the first white point coordinate and the first standard white point coordinate exceeds a first deviation threshold range, and/or the deviation of the second white point coordinate and the second standard white point coordinate exceeds a second deviation threshold range, the first standard white point coordinate is the white point coordinate of the secondary standard color gamut of the sample panel, and the second standard white point coordinate is the white point coordinate of the standard color gamut.
8. A display compensation apparatus for a display panel, the display panel including a main display area and a sub display area, the sub display area having at least a portion of a higher transmittance than the main display area, the sub display area having a lower color depth than the main display area, the apparatus comprising:
the processing module is used for acquiring the color gamut parameters of the auxiliary display area, the main display area and the standard color gamut, and obtaining the color gamut parameters of the auxiliary standard color gamut corresponding to the auxiliary display area according to the color gamut parameters of the auxiliary display area, the color gamut parameters of the main display area and the color gamut parameters of the standard color gamut;
a first adjusting module, configured to adjust a driving signal for driving each sub-pixel in the sub-display area based on a color gamut parameter of the sub-standard color gamut and a color gamut parameter of the sub-display area, so that the color gamut of the sub-display area tends to the sub-standard color gamut or is the same as the sub-standard color gamut;
and the second adjusting module is used for adjusting the driving signals for driving the sub-pixels in the main display area based on the color gamut parameter of the main display area and the color gamut parameter of the standard color gamut so that the color gamut of the main display area tends to the standard color gamut or is the same as the standard color gamut.
9. A display panel comprising the display compensation apparatus as claimed in claim 8.
10. A display compensation system is characterized by being applied to display panels to be tested in the same batch, wherein the display panels to be tested in the same batch comprise at least one group of display panels to be tested, each display panel to be tested comprises a main display area and an auxiliary display area, at least part of light transmittance of the auxiliary display area is higher than that of the main display area, and color depth of the auxiliary display area is lower than that of the main display area;
the system comprises:
the processing device is used for selecting one display panel to be tested from a group of display panels to be tested as a sample panel aiming at any group of display panels to be tested;
sample compensation means for obtaining a sub compensation target parameter and a main compensation target parameter of the sample panel by using the display compensation method according to any one of claims 1 to 5, the sub compensation target parameter being used for adjusting a driving signal for driving each sub-pixel in the sub display area, and the main compensation target parameter being used for adjusting a driving signal for driving each sub-pixel in the main display area;
and the compensation device to be tested is used for adjusting a driving signal used for driving each sub-pixel in the auxiliary display area and a driving signal used for driving each sub-pixel in the main display area in each display panel to be tested in the group of display panels to be tested based on the auxiliary compensation target parameter and the main compensation target parameter of the sample panel respectively.
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