WO2016106852A1 - 一种显示面板的缺陷的灰阶补偿方法及灰阶补偿系统 - Google Patents

一种显示面板的缺陷的灰阶补偿方法及灰阶补偿系统 Download PDF

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WO2016106852A1
WO2016106852A1 PCT/CN2015/070695 CN2015070695W WO2016106852A1 WO 2016106852 A1 WO2016106852 A1 WO 2016106852A1 CN 2015070695 W CN2015070695 W CN 2015070695W WO 2016106852 A1 WO2016106852 A1 WO 2016106852A1
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Prior art keywords
defect
gamma curve
background
standard gamma
gray scale
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French (fr)
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胡厚亮
郭平昇
朱立伟
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TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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Priority to US14/425,042 priority Critical patent/US9436977B2/en
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals

Definitions

  • the invention belongs to the technical field of manufacturing display panels, and in particular to a gray scale compensation method and a gray scale compensation system for defects of a display panel.
  • Some defects can be improved by changing the external circuit voltage, or by changing the size of the digital gray scales to make these compensable defects finally display the brightness as consistent as possible with the normal area, thereby improving the display of the display panel. effect.
  • the gray scale compensation method of the defect of the prior art display panel is computationally intensive, and the compensation for the defect cannot achieve the best effect.
  • an object of the present invention is to provide a gray scale compensation method for a defect of a display panel, comprising the steps of: A) acquiring position coordinates of defects of a display panel, and based on position coordinates of the defects Determining a defect area where the defect is located; B) acquiring a gamma curve of the defect, a gamma curve of a background of the defect area, and a standard gamma curve of a background of the display panel; C) gamma based on the defect a curve, a gamma curve of a background of the defect area, and a standard gamma curve of a background of the display panel, a standard gamma curve of the defect and a standard gamma curve of a background of the defect area; D) based on the defect A standard gamma curve and a standard gamma curve of the background of the defect region calculate a grayscale compensation value for each grayscale of the defect.
  • the specific method of acquiring the standard gamma curve of the defect and the standard gamma curve of the background of the defect region in the step C) includes: a gamma curve based on the defect, a gamma of the background of the defect region
  • the horse curve and the standard gamma curve of the background of the display panel obtain the brightness of the defect a first mapping curve of the degree value and the background brightness value of the display panel, and a second mapping curve of the background brightness value of the defect area and the background brightness value of the display panel; utilizing the first mapping curve and the second mapping The curve acquires a standard gamma curve of the defect and a standard gamma curve of the background of the defect area.
  • step D a defect type of the defect is determined to determine whether the defect is a compensable defect, wherein when the defect is a compensable defect, step D) is performed.
  • the method for determining whether the defect is a compensable defect is: when the brightness value corresponding to the maximum gray level of the standard gamma curve of the defect and the brightness value corresponding to the minimum gray level satisfy the formula 1, the defect For compensable defects,
  • max represents the maximum gray level in the standard gamma curve of the defect
  • min represents the minimum gray level in the standard gamma curve of the defect
  • X(max) represents the brightness value corresponding to the maximum gray level
  • X (min) represents the brightness value corresponding to the minimum gray level
  • T represents a predetermined threshold
  • step D) the gray scale compensation value of each gray scale of the defect is calculated by using the standard gamma curve of the defect and the standard gamma curve of the background of the defect area,
  • gray1(L) represents the grayscale of the defect acquired with a specific luminance value L according to the standard gamma curve of the defect
  • gray2(L) represents the standard gamma curve according to the background of the defective region
  • ⁇ gray represents the gray scale compensation value of the gray1 (L) gray scale of the defect.
  • Another object of the present invention is to provide a gray scale compensation system for displaying defects of a panel, comprising: a position acquisition unit configured to acquire position coordinates of a defect of the display panel, and determining the position based on the position coordinates of the defect a defect area in which the defect is located; a gamma curve acquisition unit configured to acquire a gamma curve of the defect, a gamma curve of a background of the defect area, and a standard gamma curve of a background of the display panel; a standard gamma curve acquisition a unit configured to be based on a gamma curve of the defect, a gamma curve of a background of the defect area and a standard gamma curve of a background of the display panel, a standard gamma curve of the defect and a standard gamma curve of a background of the defect area; a calculation unit configured to be based on A standard gamma curve of the defect and a standard gamma curve of the background of
  • the standard gamma curve acquisition unit is further configured to acquire the brightness of the defect based on a gamma curve of the defect, a gamma curve of a background of the defect area, and a standard gamma curve of a background of the display panel. a first mapping curve of the value and the background brightness value of the display panel, and a second mapping curve of the background brightness value of the defect area and the background brightness value of the display panel; using the first mapping curve and the second mapping curve A standard gamma curve of the defect and a standard gamma curve of the background of the defect area are obtained.
  • the grayscale compensation system further includes: a compensable defect determining unit configured to determine a defect type of the defect to determine whether the defect is a compensable defect, wherein when the compensable When the defect determining unit determines that the defect is a compensable defect, the calculating unit calculates a standard gamma curve based on a standard gamma curve of the compensable defect and a background of the defect region where the compensable defect is located The gray scale compensation value of each gray scale of the compensated defect.
  • a compensable defect determining unit configured to determine a defect type of the defect to determine whether the defect is a compensable defect, wherein when the compensable When the defect determining unit determines that the defect is a compensable defect, the calculating unit calculates a standard gamma curve based on a standard gamma curve of the compensable defect and a background of the defect region where the compensable defect is located The gray scale compensation value of each gray scale of the compensated defect.
  • the compensable defect determining unit is further configured to determine the defect when the brightness value corresponding to the maximum gray level in the standard gamma curve of the defect and the brightness value corresponding to the minimum gray level satisfy the formula 1.
  • max represents the maximum gray level in the standard gamma curve of the defect
  • min represents the minimum gray level in the standard gamma curve of the defect
  • X(max) represents the brightness value corresponding to the maximum gray level
  • X (min) represents the brightness value corresponding to the minimum gray level
  • T represents a predetermined threshold
  • the calculating unit is further configured to calculate a grayscale compensation value of each grayscale of the defect according to a standard gamma curve of the defect and a standard gamma curve of a background of the defect region, using Equation 2,
  • gray1(L) represents the grayscale of the defect acquired with a specific luminance value L according to the standard gamma curve of the defect
  • gray2(L) represents the standard gamma curve according to the background of the defective region
  • ⁇ gray represents the gray scale compensation value of the gray1 (L) gray scale of the defect.
  • the gray scale compensation method and the gray scale compensation system of the defect of the display panel of the present invention can greatly reduce the amount of calculation, and can achieve the best effect in compensating for defects.
  • FIG. 1 is a flow chart of a gray scale compensation method of a defect of a display panel according to an embodiment of the present invention
  • FIG. 2 is a block diagram of a gray scale compensation system for a defect of a display panel in accordance with an embodiment of the present invention.
  • the display panel according to an embodiment of the present invention may be a liquid crystal display panel or an organic light emitting display panel.
  • FIG. 1 is a flow chart of a gray scale compensation method for a defect of a display panel in accordance with an embodiment of the present invention.
  • position coordinates of a defect of a display panel are acquired, and a defect area in which the defect is located is determined based on the position coordinates of the defect.
  • the specific method of acquiring the position coordinates of the defect of the display panel is: acquiring the brightness value of the defect of the display panel and the brightness value of the background of the display panel, and obtaining the display based on the brightness value of the defect of the display panel and the brightness value of the background of the display panel
  • the positional coordinates of the defect of the panel wherein the brightness value of the background of the display panel refers to the brightness value of the normal area (ie, the defect-free area) of the display panel.
  • a gamma curve of the defect In operation 120, a gamma curve of the defect, a gamma curve of the defect region, and a standard gamma curve of the display panel are acquired.
  • the gamma curve of the defect can be obtained by acquiring the brightness value of the defect in each gray level, wherein the gray level of the embodiment is 0-255, a total of 256 gray levels;
  • the gamma curve of the defect area can be Obtaining by acquiring the brightness value of the background of the defect area under each gray level, wherein the brightness value of the background of the defect area refers to the brightness value of the area other than the defect in the defect area;
  • the standard gamma of the display panel The curve can be obtained by the brightness value of the background of the display panel measured by the standard optical measuring device (CA310) under each gray scale.
  • a standard gamma curve of the defect and a standard gamma of the background of the defect region are obtained based on a gamma curve of the defect, a gamma curve of a background of the defect region, and a standard gamma curve of a background of the display panel. curve.
  • the specific method of obtaining the standard gamma curve of the defect and the standard gamma curve of the background of the defect region includes: a gamma curve based on the defect, a gamma curve of the background of the defect region, and a standard of the background of the display panel
  • the gamma curve acquires a first mapping curve of the brightness value of the defect and the background brightness value of the display panel, and a second mapping curve of the background brightness value of the defect area and the background brightness value of the display panel; using the first mapping curve and The second mapping curve acquires a standard gamma curve of the defect and a standard gamma curve of the background of the defect region.
  • a defect type of the defect is determined to determine if the defect is a compensable defect.
  • the method of determining whether the defect is a compensable defect is that when the brightness value corresponding to the maximum gray level of the defect and the brightness value corresponding to the minimum gray level satisfy the following formula 1, the defect is a compensable defect.
  • max represents the maximum gray level in the standard gamma curve of the defect
  • min represents the minimum gray level in the standard gamma curve of the defect
  • X(max) represents the brightness value corresponding to the maximum gray level of the defect
  • X ( Min) indicates the brightness value corresponding to the minimum gray level of the defect
  • T indicates the threshold value
  • the defect when there is a peak or trough in the standard gamma curve of the defect, the defect is a compensable defect.
  • operation 150 When the defect is a compensable defect, operation 150 is performed; and when the defect is an uncompensable defect, the operation is ended.
  • a grayscale offset value for each grayscale of the defect is calculated based on a standard gamma curve of the defect and a standard gamma curve of the background of the defect region.
  • the gray-scale compensation value of each gray scale of the defect is calculated by using the standard gamma curve of the defect and the standard gamma curve of the background of the defect area,
  • gray1 represents the grayscale of the defect acquired by the specific luminance value L according to the standard gamma curve of the defect
  • gray2 represents the background of the defective region obtained by the standard gamma curve according to the background of the defective region using the specific luminance value.
  • the gray scale, ⁇ gray represents the grayscale compensation value of the gray1(L) gray scale of the defect.
  • the operation 140 is performed to further reduce the calculation amount of the gray scale compensation method of the defect of the display panel according to the embodiment of the present invention, thereby improving the calculation efficiency. It should be understood that in the gray scale compensation method of the above-described defect of the display panel according to the embodiment of the present invention, the operation 140 may be omitted.
  • FIG. 2 is a block diagram of a gray scale compensation system for a defect of a display panel in accordance with an embodiment of the present invention.
  • a grayscale compensation system for a defect of a display panel includes: a position acquisition unit 210, a gamma curve acquisition unit 220, a standard gamma curve acquisition unit 230, a compensable defect determination unit 240, and calculation Unit 250.
  • the location obtaining unit 210 is configured to acquire location coordinates of a defect of the display panel, and determine a defect region where the defect is located based on the location coordinates of the defect. Further, the position obtaining unit 210 acquires the brightness value of the defect of the display panel and the brightness value of the background of the display panel, and acquires the position coordinate of the defect of the display panel based on the brightness value of the defect of the display panel and the brightness value of the background of the display panel; Wherein, the brightness value of the background of the display panel refers to the brightness value of the normal area of the display panel (ie, the defect-free area).
  • the gamma curve acquisition unit 220 is configured to acquire a gamma curve of the defect, a gamma curve of the defect region, and a standard gamma curve of the display panel. Further, the gamma curve acquiring unit 220 obtains the gamma curve of the defect by acquiring the brightness value of the defect in each gray scale, wherein the gray scale of the embodiment is 0 to 255, and a total of 256 gray levels; gamma The curve obtaining unit 220 may obtain a gamma curve of the defect region by acquiring a brightness value of the background of the defect region in each gray scale, wherein the brightness value of the background of the defect region refers to the defect region except the defect The luminance value of the region; the gamma curve acquisition unit 220 can obtain the standard gamma of the display panel by acquiring the luminance value of the background of the display panel measured by the standard optical measurement device under each gray scale from the standard optical measurement device (CA310). curve.
  • CA310 standard optical measurement device
  • the standard gamma curve acquisition unit 230 is configured to obtain a standard gamma curve of the defect and a background of the defect region based on a gamma curve of the defect, a gamma curve of a background of the defect region, and a standard gamma curve of a background of the display panel. Standard gamma curve. Further, the standard gamma curve acquisition unit 230 acquires the brightness value of the defect and the background brightness value of the display panel based on the gamma curve of the defect, the gamma curve of the background of the defect area, and the standard gamma curve of the background of the display panel.
  • the standard gamma curve obtaining unit 230 obtains the defect by using the first mapping curve and the second mapping curve The standard gamma curve and the standard gamma curve of the background of the defect region.
  • the compensable defect determination unit 240 is configured to judge the defect type of the defect to determine whether the defect is acceptable.
  • the defect of compensation Further, the compensable defect determining unit 240 is configured to determine whether the brightness value corresponding to the maximum gray level of the defect and the brightness value corresponding to the minimum gray level satisfy the above formula 1, thereby determining whether the defect is a compensable defect.
  • the compensable defect determining unit 240 determines the defect as a compensable defect.
  • the compensable defect determining unit 240 detects a peak or a trough of a standard gamma curve of the defect, the defect is determined as a compensable defect.
  • the calculating unit 250 is configured to calculate the gray scale of the defect based on the standard gamma curve of the defect and the standard gamma curve of the background of the defect region. Gray scale compensation value. Further, the calculation unit 250 calculates the defect by using the above formula 2 according to the standard gamma curve of the defect and the standard gamma curve of the background of the defect area. The gray scale compensation value of each gray scale.
  • the gray scale compensation method and the gray scale compensation system of the defect of the display panel according to the embodiment of the present invention can greatly reduce the amount of calculation, and can achieve the best effect in compensating for defects.

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Abstract

一种显示面板的缺陷的灰阶补偿方法及系统，包括步骤：A)获取显示面板的缺陷的位置坐标，并基于缺陷的位置坐标确定缺陷所在的缺陷区域（110）；B)获取缺陷的伽马曲线、缺陷区域的背景的伽马曲线以及显示面板的背景的标准伽马曲线（120）；C)基于缺陷的伽马曲线、缺陷区域的背景的伽马曲线以及显示面板的背景的标准伽马曲线获取缺陷的标准伽马曲线以及缺陷区域的背景的标准伽马曲线（130）；D)基于缺陷的标准伽马曲线以及缺陷区域的背景的标准伽马曲线计算缺陷的各灰阶的灰阶补偿值（150）。该灰阶补偿方法及系统能够大幅度减小计算量，并且能够对缺陷的补偿达到最好的效果。

Description

一种显示面板的缺陷的灰阶补偿方法及灰阶补偿系统 技术领域
本发明属于显示面板的制造技术领域，具体地讲，涉及一种显示面板的缺陷的灰阶补偿方法及灰阶补偿系统。
背景技术
随着显示技术的快速发展，能够实现高品质图像显示的显示面板(诸如，液晶显示面板或者有机发光显示面板)已成为市场的主流。然而，在现有的显示面板制造技术中，由于制程或材料的不足会导致显示面板出现点、线、带、块状等缺陷，而且完全避免这种缺陷的发生是非常困难的。
一些缺陷(诸如可补偿的缺陷)可通过改变外部电路电压来得到改善，或者通过改变数位灰阶的大小来使得这些可补偿的缺陷最终显示与正常区域尽量一致的亮度，从而提升显示面板的显示效果。然而，现有技术的显示面板的缺陷的灰阶补偿方法的计算量较大，并且对缺陷的补偿不能达到最好的效果。
发明内容
为了解决上述现有技术存在的问题，本发明的目的在于提供一种显示面板的缺陷的灰阶补偿方法，包括步骤：A)获取显示面板的缺陷的位置坐标，并基于所述缺陷的位置坐标确定所述缺陷所在的缺陷区域；B)获取所述缺陷的伽马曲线、所述缺陷区域的背景的伽马曲线以及显示面板的背景的标准伽马曲线；C)基于所述缺陷的伽马曲线、所述缺陷区域的背景的伽马曲线以及显示面板的背景的标准伽马曲线获取所述缺陷的标准伽马曲线以及所述缺陷区域的背景的标准伽马曲线；D)基于所述缺陷的标准伽马曲线以及所述缺陷区域的背景的标准伽马曲线计算所述缺陷的各灰阶的灰阶补偿值。
进一步地，步骤C)中获取所述缺陷的标准伽马曲线以及所述缺陷区域的背景的标准伽马曲线的具体方法包括：基于所述缺陷的伽马曲线、所述缺陷区域的背景的伽马曲线以及显示面板的背景的标准伽马曲线获取所述缺陷的亮 度值与显示面板的背景亮度值的第一映射曲线，以及所述缺陷区域的背景亮度值与显示面板的背景亮度值的第二映射曲线；利用所述第一映射曲线和所述第二映射曲线获取所述缺陷的标准伽马曲线以及所述缺陷区域的背景的标准伽马曲线。
进一步地，在执行步骤D)之前，对所述缺陷的缺陷类型进行判断，以确定所述缺陷是否为可补偿的缺陷，其中，当所述缺陷为可补偿的缺陷时，执行步骤D)。
进一步地，确定所述缺陷是否为可补偿的缺陷的方法为：当所述缺陷的标准伽马曲线中最大灰阶对应的亮度值与最小灰阶对应的亮度值满足式子1时，该缺陷为可补偿的缺陷，
[式子1]
Figure PCTCN2015070695-appb-000001
其中，max表示所述缺陷的标准伽马曲线中的最大灰阶，min表示所述缺陷的标准伽马曲线中的最小灰阶，X(max)表示所述最大灰阶对应的亮度值，X(min)表示所述最小灰阶对应的亮度值，T表示一预定阈值。
进一步地，在步骤D)中，根据所述缺陷的标准伽马曲线以及所述缺陷区域的背景的标准伽马曲线利用式子2计算所述缺陷的各灰阶的灰阶补偿值，
[式子2]Δgray＝gray2(L)-gray1(L)
其中，gray1(L)表示根据所述缺陷的标准伽马曲线利用特定亮度值L获取的所述缺陷的灰阶，gray2(L)表示根据所述缺陷区域的背景的标准伽马曲线利用所述特定亮度值L获取的所述缺陷区域的背景的灰阶，Δgray表示所述缺陷的gray1(L)灰阶的灰阶补偿值。
本发明的另一目的还在于提供一种显示面板的缺陷的灰阶补偿系统，包括：位置获取单元，被配置为获取显示面板的缺陷的位置坐标，并基于所述缺陷的位置坐标确定所述缺陷所在的缺陷区域；伽马曲线获取单元，被配置为获取所述缺陷的伽马曲线、所述缺陷区域的背景的伽马曲线以及显示面板的背景的标准伽马曲线；标准伽马曲线获取单元，被配置为基于所述缺陷的伽马曲线、 所述缺陷区域的背景的伽马曲线以及显示面板的背景的标准伽马曲线获取所述缺陷的标准伽马曲线以及所述缺陷区域的背景的标准伽马曲线；计算单元，被配置为基于所述缺陷的标准伽马曲线以及所述缺陷区域的背景的标准伽马曲线计算所述缺陷的各灰阶的灰阶补偿值。
进一步地，所述标准伽马曲线获取单元进一步被配置为基于所述缺陷的伽马曲线、所述缺陷区域的背景的伽马曲线以及显示面板的背景的标准伽马曲线获取所述缺陷的亮度值与显示面板的背景亮度值的第一映射曲线，以及所述缺陷区域的背景亮度值与显示面板的背景亮度值的第二映射曲线；利用所述第一映射曲线和所述第二映射曲线获取所述缺陷的标准伽马曲线以及所述缺陷区域的背景的标准伽马曲线。
进一步地，所述灰阶补偿系统还包括：可补偿缺陷确定单元，被配置为对所述缺陷的缺陷类型进行判断，以确定所述缺陷是否为可补偿的缺陷，其中，当所述可补偿缺陷确定单元确定所述缺陷为可补偿的缺陷时，所述计算单元基于所述可补偿的缺陷的标准伽马曲线以及所述可补偿的缺陷所在的缺陷区域的背景的标准伽马曲线计算所述可补偿的缺陷的各灰阶的灰阶补偿值。
进一步地，所述可补偿缺陷确定单元进一步被配置为当所述缺陷的标准伽马曲线中最大灰阶对应的亮度值与最小灰阶对应的亮度值满足式子1时，将所述缺陷确定为可补偿的缺陷，
[式子1]
Figure PCTCN2015070695-appb-000002
其中，max表示所述缺陷的标准伽马曲线中的最大灰阶，min表示所述缺陷的标准伽马曲线中的最小灰阶，X(max)表示所述最大灰阶对应的亮度值，X(min)表示所述最小灰阶对应的亮度值，T表示一预定阈值。
进一步地，所述计算单元被进一步配置为根据所述缺陷的标准伽马曲线以及所述缺陷区域的背景的标准伽马曲线利用式子2计算所述缺陷的各灰阶的灰阶补偿值，
[式子2]Δgray＝gray2(L)-gray1(L)
其中，gray1(L)表示根据所述缺陷的标准伽马曲线利用特定亮度值L获取的所述缺陷的灰阶，gray2(L)表示根据所述缺陷区域的背景的标准伽马曲线利用所述特定亮度值L获取的所述缺陷区域的背景的灰阶，Δgray表示所述缺陷的gray1(L)灰阶的灰阶补偿值。
本发明的显示面板的缺陷的灰阶补偿方法及灰阶补偿系统，其能够大幅度减小计算量，并且能够对缺陷的补偿达到最好的效果。
附图说明
通过结合附图进行的以下描述，本发明的实施例的上述和其它方面、特点和优点将变得更加清楚，附图中：
图1是根据本发明的实施例的显示面板的缺陷的灰阶补偿方法的流程图；
图2是根据本发明的实施例的显示面板的缺陷的灰阶补偿系统的模块图。
具体实施方式
以下，将参照附图来详细描述本发明的实施例。然而，可以以许多不同的形式来实施本发明，并且本发明不应该被解释为限制于这里阐述的具体实施例。相反，提供这些实施例是为了解释本发明的原理及其实际应用，从而使本领域的其他技术人员能够理解本发明的各种实施例和适合于特定预期应用的各种修改。
需要说明的是，根据本发明的实施例的显示面板可以是液晶显示面板或者有机发光显示面板。
图1是根据本发明的实施例的显示面板的缺陷的灰阶补偿方法的流程图。
参照图1，在操作110中，获取显示面板的缺陷的位置坐标，并基于该缺陷的位置坐标确定该缺陷所在的缺陷区域。
这里，获取显示面板的缺陷的位置坐标的具体方法为：获取显示面板的缺陷的亮度值以及显示面板的背景的亮度值，基于显示面板的缺陷的亮度值以及显示面板的背景的亮度值获取显示面板的缺陷的位置坐标；其中，显示面板的背景的亮度值指的是显示面板的正常区域(即无缺陷区域)的亮度值。
在操作120中，获取该缺陷的伽马(Gamma)曲线、该缺陷区域的伽马曲线以及显示面板的标准伽马曲线。
这里，该缺陷的伽马曲线可通过获取各灰阶下该缺陷的亮度值而获取，其中，本实施例的灰阶为0～255，共256个灰阶；该缺陷区域的伽马曲线可通过获取各灰阶下该缺陷区域的背景的亮度值而获取，其中，该缺陷区域的背景的亮度值指的是该缺陷区域中除该缺陷外的区域的亮度值；显示面板的标准伽马曲线可通过标准光学测量设备(CA310)在各灰阶下量测的显示面板的背景的亮度值而获取。
在操作130中，基于该缺陷的伽马曲线、该缺陷区域的背景的伽马曲线以及显示面板的背景的标准伽马曲线获取该缺陷的标准伽马曲线以及该缺陷区域的背景的标准伽马曲线。
这里，获取该缺陷的标准伽马曲线以及该缺陷区域的背景的标准伽马曲线的具体方法包括：基于该缺陷的伽马曲线、该缺陷区域的背景的伽马曲线以及显示面板的背景的标准伽马曲线获取该缺陷的亮度值与显示面板的背景亮度值的第一映射曲线，以及该缺陷区域的背景亮度值与显示面板的背景亮度值的第二映射曲线；利用该第一映射曲线和该第二映射曲线获取该缺陷的标准伽马曲线以及该缺陷区域的背景的标准伽马曲线。
在操作140中，对该缺陷的缺陷类型进行判断，以确定该缺陷是否为可补偿的缺陷。
这里，确定该缺陷是否为可补偿的缺陷的方法为：当该缺陷的最大灰阶对应的亮度值与最小灰阶对应的亮度值满足下面的式子1时，该缺陷为可补偿的缺陷。
[式子1]
Figure PCTCN2015070695-appb-000003
其中，max表示该缺陷的标准伽马曲线中的最大灰阶，min表示该缺陷的标准伽马曲线中的最小灰阶，X(max)表示该缺陷的最大灰阶对应的亮度值，X(min)表示该缺陷的最小灰阶对应的亮度值，T表示该阈值。
或者，当该缺陷的标准伽马曲线存在波峰或波谷时，该缺陷为可补偿的缺陷。
当该缺陷为可补偿的缺陷时，执行操作150；而当该缺陷为不可补偿的缺陷时，结束操作。
在操作150中，基于该缺陷的标准伽马曲线以及该缺陷区域的背景的标准伽马曲线计算该缺陷的各灰阶的灰阶补偿值。这里，根据该缺陷的标准伽马曲线以及该缺陷区域的背景的标准伽马曲线利用式子2计算该缺陷的各灰阶的灰阶补偿值，
[式子2]Δgray＝gray2(L)-gray1(L)
其中，gray1表示根据该缺陷的标准伽马曲线利用特定亮度值L获取的该缺陷的灰阶，gray2表示根据该缺陷区域的背景的标准伽马曲线利用该特定亮度值获取的该缺陷区域的背景的灰阶，Δgray表示该缺陷的gray1(L)灰阶的灰阶补偿值。
此外，需要说明的是，进行操作140是为了进一步减小根据本发明的实施例的显示面板的缺陷的灰阶补偿方法的计算量，从而提高计算效率。应当理解的是，在上述的据本发明的实施例的显示面板的缺陷的灰阶补偿方法中，可以省略操作140。
图2是根据本发明的实施例的显示面板的缺陷的灰阶补偿系统的模块图。
参照图2，根据本发明的实施例的显示面板的缺陷的灰阶补偿系统包括：位置获取单元210、伽马曲线获取单元220、标准伽马曲线获取单元230、可补偿缺陷确定单元240及计算单元250。
具体而言，位置获取单元210用于获取显示面板的缺陷的位置坐标，并基于该缺陷的位置坐标确定该缺陷所在的缺陷区域。进一步地，位置获取单元210获取显示面板的缺陷的亮度值以及显示面板的背景的亮度值，并基于显示面板的缺陷的亮度值以及显示面板的背景的亮度值获取显示面板的缺陷的位置坐标；其中，显示面板的背景的亮度值指的是显示面板的正常区域(即无缺陷区域)的亮度值。
伽马曲线获取单元220用于获取该缺陷的伽马(Gamma)曲线、该缺陷区域的伽马曲线以及显示面板的标准伽马曲线。进一步地，伽马曲线获取单元220通过获取各灰阶下该缺陷的亮度值而获取该缺陷的伽马曲线，其中，本实施例的灰阶为0～255，共256个灰阶；伽马曲线获取单元220可通过获取各灰阶下该缺陷区域的背景的亮度值而获取该缺陷区域的伽马曲线，其中，该缺陷区域的背景的亮度值指的是该缺陷区域中除该缺陷外的区域的亮度值；伽马曲线获取单元220可通过从标准光学测量设备(CA310)获取标准光学测量设备在各灰阶下量测的显示面板的背景的亮度值而获取显示面板的标准伽马曲线。
标准伽马曲线获取单元230用于基于该缺陷的伽马曲线、该缺陷区域的背景的伽马曲线以及显示面板的背景的标准伽马曲线获取该缺陷的标准伽马曲线以及该缺陷区域的背景的标准伽马曲线。进一步地，标准伽马曲线获取单元230基于该缺陷的伽马曲线、该缺陷区域的背景的伽马曲线以及显示面板的背景的标准伽马曲线获取该缺陷的亮度值与显示面板的背景亮度值的第一映射曲线，以及该缺陷区域的背景亮度值与显示面板的背景亮度值的第二映射曲线，并且标准伽马曲线获取单元230利用该第一映射曲线和该第二映射曲线获取该缺陷的标准伽马曲线以及该缺陷区域的背景的标准伽马曲线。
为了进一步减小根据本发明的实施例的显示面板的缺陷的灰阶补偿系统的计算量，这里，可补偿缺陷确定单元240用于对该缺陷的缺陷类型进行判断，以确定该缺陷是否为可补偿的缺陷。进一步地，可补偿缺陷确定单元240用于判断该缺陷的最大灰阶对应的亮度值与最小灰阶对应的亮度值是否满足上面的式子1，从而判断该缺陷是否为可补偿的缺陷。
当该缺陷的最大灰阶对应的亮度值与最小灰阶对应的亮度值是否满足上面的式子1时，可补偿缺陷确定单元240将该缺陷确定为可补偿的缺陷。或者，当可补偿缺陷确定单元240检测到该缺陷的标准伽马曲线存在波峰或波谷时，将该缺陷确定为可补偿的缺陷。
当可补偿缺陷确定单元240将该缺陷确定为可补偿的缺陷时，计算单元250用于基于该缺陷的标准伽马曲线以及该缺陷区域的背景的标准伽马曲线计算该缺陷的各灰阶的灰阶补偿值。进一步地，计算单元250根据该缺陷的标准伽马曲线以及该缺陷区域的背景的标准伽马曲线利用上面的式子2计算该缺陷 的各灰阶的灰阶补偿值。
综上，根据本发明的实施例的显示面板的缺陷的灰阶补偿方法及灰阶补偿系统，其能够大幅度减小计算量，并且能够对缺陷的补偿达到最好的效果。
虽然已经参照特定实施例示出并描述了本发明，但是本领域的技术人员将理解：在不脱离由权利要求及其等同物限定的本发明的精神和范围的情况下，可在此进行形式和细节上的各种变化。

Claims (14)

  1. 一种显示面板的缺陷的灰阶补偿方法，其中，包括步骤：
    A)获取显示面板的缺陷的位置坐标，并基于所述缺陷的位置坐标确定所述缺陷所在的缺陷区域；
    B)获取所述缺陷的伽马曲线、所述缺陷区域的背景的伽马曲线以及显示面板的背景的标准伽马曲线；
    C)基于所述缺陷的伽马曲线、所述缺陷区域的背景的伽马曲线以及显示面板的背景的标准伽马曲线获取所述缺陷的标准伽马曲线以及所述缺陷区域的背景的标准伽马曲线；
    D)基于所述缺陷的标准伽马曲线以及所述缺陷区域的背景的标准伽马曲线计算所述缺陷的各灰阶的灰阶补偿值。
  2. 根据权利要求1所述的灰阶补偿方法，其中，步骤C)中获取所述缺陷的标准伽马曲线以及所述缺陷区域的背景的标准伽马曲线的具体方法包括：
    基于所述缺陷的伽马曲线、所述缺陷区域的背景的伽马曲线以及显示面板的背景的标准伽马曲线获取所述缺陷的亮度值与显示面板的背景亮度值的第一映射曲线，以及所述缺陷区域的背景亮度值与显示面板的背景亮度值的第二映射曲线；
    利用所述第一映射曲线和所述第二映射曲线获取所述缺陷的标准伽马曲线以及所述缺陷区域的背景的标准伽马曲线。
  3. 根据权利要求1所述的灰阶补偿方法，其中，在执行步骤D)之前，对所述缺陷的缺陷类型进行判断，以确定所述缺陷是否为可补偿的缺陷，
    其中，当所述缺陷为可补偿的缺陷时，执行步骤D)。
  4. 根据权利要求2所述的灰阶补偿方法，其中，在执行步骤D)之前，对所述缺陷的缺陷类型进行判断，以确定所述缺陷是否为可补偿的缺陷，
    其中，当所述缺陷为可补偿的缺陷时，执行步骤D)。
  5. 根据权利要求3所述的灰阶补偿方法，其中，确定所述缺陷是否为可补偿的缺陷的方法为：当所述缺陷的标准伽马曲线中最大灰阶对应的亮度值与最小灰阶对应的亮度值满足式子1时，该缺陷为可补偿的缺陷，
    [式子1]
    Figure PCTCN2015070695-appb-100001
    其中，max表示所述缺陷的标准伽马曲线中的最大灰阶，min表示所述缺陷的标准伽马曲线中的最小灰阶，X(max)表示所述最大灰阶对应的亮度值，X(min)表示所述最小灰阶对应的亮度值，T表示一预定阈值。
  6. 根据权利要求4所述的灰阶补偿方法，其中，确定所述缺陷是否为可补偿的缺陷的方法为：当所述缺陷的标准伽马曲线中最大灰阶对应的亮度值与最小灰阶对应的亮度值满足式子1时，该缺陷为可补偿的缺陷，
    [式子1]
    Figure PCTCN2015070695-appb-100002
    其中，max表示所述缺陷的标准伽马曲线中的最大灰阶，min表示所述缺陷的标准伽马曲线中的最小灰阶，X(max)表示所述最大灰阶对应的亮度值，X(min)表示所述最小灰阶对应的亮度值，T表示一预定阈值。
  7. 根据权利要求1所述的灰阶补偿方法，其中，在步骤D)中，根据所述缺陷的标准伽马曲线以及所述缺陷区域的背景的标准伽马曲线利用式子2计算所述缺陷的各灰阶的灰阶补偿值，
    [式子2]Δgray＝gray2(L)-gray1(L)
    其中，gray1(L)表示根据所述缺陷的标准伽马曲线利用特定亮度值L获取的所述缺陷的灰阶，gray2(L)表示根据所述缺陷区域的背景的标准伽马曲线利用所述特定亮度值L获取的所述缺陷区域的背景的灰阶，Δgray表示所述缺陷的gray1(L)灰阶的灰阶补偿值。
  8. 一种显示面板的缺陷的灰阶补偿系统，其中，包括：
    位置获取单元，被配置为获取显示面板的缺陷的位置坐标，并基于所述缺陷的位置坐标确定所述缺陷所在的缺陷区域；
    伽马曲线获取单元，被配置为获取所述缺陷的伽马曲线、所述缺陷区域的背景的伽马曲线以及显示面板的背景的标准伽马曲线；
    标准伽马曲线获取单元，被配置为基于所述缺陷的伽马曲线、所述缺陷区域的背景的伽马曲线以及显示面板的背景的标准伽马曲线获取所述缺陷的标准伽马曲线以及所述缺陷区域的背景的标准伽马曲线；
    计算单元，被配置为基于所述缺陷的标准伽马曲线以及所述缺陷区域的背景的标准伽马曲线计算所述缺陷的各灰阶的灰阶补偿值。
  9. 根据权利要求8所述的灰阶补偿系统，其中，所述标准伽马曲线获取单元进一步被配置为基于所述缺陷的伽马曲线、所述缺陷区域的背景的伽马曲线以及显示面板的背景的标准伽马曲线获取所述缺陷的亮度值与显示面板的背景亮度值的第一映射曲线，以及所述缺陷区域的背景亮度值与显示面板的背景亮度值的第二映射曲线；利用所述第一映射曲线和所述第二映射曲线获取所述缺陷的标准伽马曲线以及所述缺陷区域的背景的标准伽马曲线。
  10. 根据权利要求8所述的灰阶补偿系统，其中，所述灰阶补偿系统还包括：可补偿缺陷确定单元，被配置为对所述缺陷的缺陷类型进行判断，以确定所述缺陷是否为可补偿的缺陷，
    其中，当所述可补偿缺陷确定单元确定所述缺陷为可补偿的缺陷时，所述计算单元基于所述可补偿的缺陷的标准伽马曲线以及所述可补偿的缺陷所在的缺陷区域的背景的标准伽马曲线计算所述可补偿的缺陷的各灰阶的灰阶补偿值。
  11. 根据权利要求9所述的灰阶补偿系统，其中，所述灰阶补偿系统还包括：可补偿缺陷确定单元，被配置为对所述缺陷的缺陷类型进行判断，以确定所述缺陷是否为可补偿的缺陷，
    其中，当所述可补偿缺陷确定单元确定所述缺陷为可补偿的缺陷时，所述计算单元基于所述可补偿的缺陷的标准伽马曲线以及所述可补偿的缺陷所在 的缺陷区域的背景的标准伽马曲线计算所述可补偿的缺陷的各灰阶的灰阶补偿值。
  12. 根据权利要求10所述的灰阶补偿系统，其中，所述可补偿缺陷确定单元进一步被配置为当所述缺陷的标准伽马曲线中最大灰阶对应的亮度值与最小灰阶对应的亮度值满足式子1时，将所述缺陷确定为可补偿的缺陷，
    [式子1]
    Figure PCTCN2015070695-appb-100003
    其中，max表示所述缺陷的标准伽马曲线中的最大灰阶，min表示所述缺陷的标准伽马曲线中的最小灰阶，X(max)表示所述最大灰阶对应的亮度值，X(min)表示所述最小灰阶对应的亮度值，T表示一预定阈值。
  13. 根据权利要求11所述的灰阶补偿系统，其中，所述可补偿缺陷确定单元进一步被配置为当所述缺陷的标准伽马曲线中最大灰阶对应的亮度值与最小灰阶对应的亮度值满足式子1时，将所述缺陷确定为可补偿的缺陷，
    [式子1]
    Figure PCTCN2015070695-appb-100004
    其中，max表示所述缺陷的标准伽马曲线中的最大灰阶，min表示所述缺陷的标准伽马曲线中的最小灰阶，X(max)表示所述最大灰阶对应的亮度值，X(min)表示所述最小灰阶对应的亮度值，T表示一预定阈值。
  14. 根据权利要求8所述的灰阶补偿系统，其中，所述计算单元被进一步配置为根据所述缺陷的标准伽马曲线以及所述缺陷区域的背景的标准伽马曲线利用式子2计算所述缺陷的各灰阶的灰阶补偿值，
    [式子2]Δgray＝gray2(L)-gray1(L)
    其中，gray1(L)表示根据所述缺陷的标准伽马曲线利用特定亮度值L获取的所述缺陷的灰阶，gray2(L)表示根据所述缺陷区域的背景的标准伽马曲线利用所述特定亮度值L获取的所述缺陷区域的背景的灰阶，Δgray表示所述缺陷的gray1(L)灰阶的灰阶补偿值。
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