WO2020082519A1 - 显示面板的亮度修正方法和亮度修正设备 - Google Patents

显示面板的亮度修正方法和亮度修正设备 Download PDF

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Publication number
WO2020082519A1
WO2020082519A1 PCT/CN2018/119672 CN2018119672W WO2020082519A1 WO 2020082519 A1 WO2020082519 A1 WO 2020082519A1 CN 2018119672 W CN2018119672 W CN 2018119672W WO 2020082519 A1 WO2020082519 A1 WO 2020082519A1
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gray
picture
full
grayscale
scale
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PCT/CN2018/119672
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English (en)
French (fr)
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李嘉航
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惠科股份有限公司
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Priority to US16/982,560 priority Critical patent/US11250812B2/en
Publication of WO2020082519A1 publication Critical patent/WO2020082519A1/zh

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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
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/10—Intensity circuits
    • 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
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10—Complex mathematical operations
    • G06F17/18—Complex mathematical operations for evaluating statistical data, e.g. average values, frequency distributions, probability functions, regression analysis
    • 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
    • G09G3/2092—Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
    • G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
    • 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
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G09G2320/0646—Modulation of illumination source brightness and image signal correlated to each other
    • 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
    • G09G2320/0673—Adjustment of display parameters for control of gamma adjustment, e.g. selecting another gamma curve
    • 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
    • G09G2320/0693—Calibration of display systems
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
    • G09G2360/145—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light originating from the display screen
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/13—Active-matrix OLED [AMOLED] displays comprising photosensors that control luminance

Definitions

  • the present application relates to the field of display technology, and in particular, to a brightness correction method and brightness correction device for a display panel.
  • LCD monitors have become the mainstream products of monitors due to the hot spots such as thin body, power saving and low radiation, which have been widely used.
  • Flat panel displays include thin film transistor liquid crystal displays (Thin Film Transistor-Liquid Crystal (TFT-LCD) and organic light-emitting diode (Organic Light-Emitting Diode, OLED) displays, etc.
  • TFT-LCD Thi Film Transistor-Liquid Crystal
  • OLED Organic Light-Emitting Diode
  • the thin film transistor liquid crystal display controls the rotation direction of the liquid crystal molecules to refract the light of the backlight module to generate a gray-scale picture, which has many advantages such as a thin body, power saving, and no radiation.
  • the organic light-emitting diode display is made of organic electroluminescent diodes, and has many advantages such as self-luminescence, short response time, high definition and contrast, flexible display and large-area full-color display.
  • the purpose of the present application is to provide a brightness correction method and brightness correction device for a display panel to solve the brightness correction of the display panel while improving the gamma parameter control effect of the display panel.
  • the present application provides a brightness correction method for a display panel, including the following steps:
  • Full-screen optical information collection at least one preset high-gray-scale image full-screen optical information, one low-gray-scale image full-screen optical information, and at least one intermediate gray-scale image full-screen optical information are collected;
  • the gray-scale correction matrix corresponding to the current gray-scale is obtained.
  • This application also discloses a brightness correction device for a display panel, including:
  • An optical information collector which collects at least one preset high-gray-scale picture full-frame optical information, one low-gray-scale picture full-screen optical information, and at least one intermediate gray-scale picture full-screen optical information;
  • a calculator calculating the target optical brightness value corresponding to the intermediate gray-scale picture based on the full-picture optical information of the high-gray-scale picture and the full-picture optical information of the low-gray-scale picture obtained by the optical information collector;
  • the gray scale corrector compares the full-frame optical information of the intermediate gray scale picture with the target optical brightness value corresponding to the current intermediate gray scale picture to obtain the gray scale correction matrix corresponding to the current gray scale.
  • This application uses the full-frame optical information of at least one high-gray-scale image and the full-frame optical information of a low-gray-scale image as the original data to calculate the target optical brightness value corresponding to the intermediate gray-scale image.
  • the full-screen optical information is corrected to obtain a gray-scale correction matrix.
  • the uniformity difference in the display panel is large, or the display Variation of the panel itself results in a large offset of the optical gamma.
  • the modified gray scale of this solution is calculated according to the specifications, which is more in line with the gamma control requirements of the panel gray scale, greatly reducing the process of gamma parameter specification detection of the modified display panel gray scale In the case, the panel's gamma parameter specification exceeds the situation of gamma control.
  • FIG. 1 is a schematic diagram of a flow of a brightness correction method of a display panel according to an embodiment of the present application
  • FIG. 2 is a schematic diagram of a flow of a method for brightness correction of a display panel according to another embodiment of the present application
  • FIG. 3 is a schematic flowchart of an optical collection process according to an embodiment of the present application.
  • FIG. 4 is a schematic diagram of a calculation process of a target optical brightness value according to an embodiment of the present application.
  • FIG. 5 is a schematic diagram of a calculation process of actual optical brightness values according to an embodiment of the present application.
  • FIG. 6 is a schematic diagram of a brightness compensation process calculator showing uneven areas according to an embodiment of the present application.
  • FIG. 7 is a schematic diagram of a picture detection and evaluation process after correction in the embodiment of the present application.
  • FIG. 8 is a schematic diagram of the position of the center area of the display panel according to an embodiment of the present application.
  • FIG. 9 is a schematic diagram of the standard gamma curve before and after the modification of the embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a brightness correction device for a display panel according to an embodiment of the present application.
  • the features defined as “first” and “second” may explicitly or implicitly include one or more of the features.
  • the meaning of “plurality” is two or more.
  • the term “including” and any variations thereof are intended to cover non-exclusive inclusions.
  • connection should be understood in a broad sense, for example, it can be fixed or detachable Connected, or connected integrally; either mechanically or electrically; directly connected, or indirectly connected through an intermediary, or internally connected between two components.
  • installation should be understood in a broad sense, for example, it can be fixed or detachable Connected, or connected integrally; either mechanically or electrically; directly connected, or indirectly connected through an intermediary, or internally connected between two components.
  • an embodiment of the present application discloses a display correction method for a display panel, including the following steps:
  • the full-frame optical information of at least one high-gray-scale picture and the full-frame optical information of a low-gray-scale picture are used as the original data to calculate the target optical brightness value corresponding to the intermediate gray-scale picture.
  • the actual full-screen optical information of the image is corrected to obtain a gray-scale correction matrix.
  • the uniformity difference in the display panel is large, Or the variation of the display panel itself leads to a large optical gamma shift.
  • the optical brightness value of the actual full-screen optical information of the current gray scale may cause the optical brightness of the display panel after gray scale trimming to exceed the gamma
  • the scope of the control requirements; and the gray scale after the correction of this scheme is calculated according to the specifications, which is more in line with the gamma control requirements of the panel gray scale, greatly reducing the gray scale of the display panel after the gamma parameter specification testing During the process, the panel's gamma parameter specification exceeds the gamma control situation.
  • the step of calculating the target optical brightness value corresponding to the intermediate gray scale according to the full-frame optical information of the high-gray scale picture and the full-frame optical information of the low-gray scale picture includes:
  • the average brightness value LvA of the high-gray scale screen and the average brightness value LvB of the low-gray scale screen are used to calculate the target brightness value lvm 'of the middle m gray scale through the above formula, and the target brightness value of the middle m gray scale screen It is the target brightness value that meets the standard gamma parameters.
  • the gray scale range of the low gray scale image is: 0-32 gray scale; the gray scale range of the high gray scale image is: 223-255 gray scale.
  • the target brightness values are relatively accurate and are closer to the actual display effect of the display panel.
  • the low-gray-scale picture is a completely black picture; the high-gray-scale picture is an all-white picture.
  • the full black grayscale screen and the full white grayscale screen because of the data voltage range, it is often impossible to compensate for the brightness by adjusting the data voltage of the pixel electrode corresponding to the uneven area, so the full black grayscale screen and the full
  • the white-gray scale picture is a picture that is actually displayed. Taking the actual full-screen optical information of the pictures at both ends of the gray scale as the calculation source of the target brightness value, the target optical brightness value corresponding to the middle gray scale of the display panel can be more in line with the gamma control requirements.
  • the full-screen optical information collection step at least three different intermediate gray-scale frames of full-frame optical information are collected;
  • the above three different intermediate grayscales Compare the pictures to get the grayscale correction matrix of three different intermediate grayscale pictures;
  • the grayscale correction matrix of other grayscale screens is obtained by interpolation calculation through the three intermediate grayscale screens.
  • the detection and correction process of this scheme is faster and the calculation
  • the grayscale correction matrix of the grayscale screen of the full grayscale screen is under the standard value, so the correction effect is very good.
  • the average brightness value LvA of the high-gray scale picture and the average brightness value LvB of the low-gray scale picture are calculated by selecting the K * Q central area of the gray-scale picture; where K represents the gray-scale picture The height, Q represents the width of the grayscale picture.
  • the optical information of the central area of the grayscale screen displayed is often captured during the quality inspection of the display panel to evaluate the quality of the display panel.
  • the optical of the K * Q central area of the grayscale screen is selected.
  • K Q
  • the central area where K is not equal to Q can also be selected, and the resolution of the display panel is selected, and K and Q become The central area of the proportional relationship.
  • the central area of the display screen is selected to calculate the required value in the correction process.
  • the brightness of the full screen is in line with the human The comfort of the eye's attention, which is conducive to improving the visual experience.
  • the brightness correction method of the display panel further includes the following steps:
  • the display panel drives the actually input picture with the compensated and corrected brightness and displays it on the display panel;
  • the feedback is unqualified. This prompts the inspector to perform rework processing or other corrections on the unqualified display panel, which improves the inspection rejection rate of the inspector and avoids poor quality
  • the display panel will flow into the subsequent process, increasing the production difficulty of the production line; if the gamma parameter specifications are confirmed to be qualified, it will enter the subsequent stage, which can increase the detection speed of the detection personnel and help improve production efficiency.
  • the step of obtaining the gray-scale correction matrix corresponding to the current gray-scale includes:
  • the target brightness value of the current gray-scale picture is calculated, and compared with the actual optical brightness value of each pixel of the current gray-scale picture, the compensated brightness value of each pixel of the current gray-scale picture is calculated and obtained separately
  • the grayscale correction matrix corresponding to the current grayscale screen After brightness correction, the display unevenness of the display panel is significantly improved. Even for a display panel that is not unevenly displayed, the overall brightness deviation of the display panel can be improved by brightness correction. Such a design can take into account the situation that the gamma parameter specification of the display panel exceeds the gamma control after brightness correction.
  • Another embodiment of the present application discloses a display brightness correction method for a display panel, including the following steps:
  • Full-screen optical information collection collects the full-screen optical information of a preset full-white grayscale image, the full-screen optical information of a full black grayscale image, and the full-scale of m grayscale images, n grayscale images, and g grayscale images Picture optical information, where m, n and g are gray scale values, 0 ⁇ m ⁇ n ⁇ g ⁇ 255;
  • m, n and g are the current gray scale values;
  • ⁇ is the standard gamma parameter preset by the display panel;
  • the target optical brightness values lvm ', lvn', lvg ' corresponding to the m gray scale picture, the n gray scale picture, the g gray scale picture and the actual optics of each pixel of the m gray scale picture, the n gray scale picture, the g gray scale picture
  • the brightness values Lvm (i, j), Lvn (i, j), Lvg (i, j) are compared to obtain the gray scale correction matrix corresponding to the m gray scale screen, the n gray scale screen, and the g gray scale screen;
  • FIGS. 2 to 7 another embodiment of the present application discloses a display correction method for a display panel, including:
  • S11 The image generator outputs the current grayscale screen data to the display panel
  • the display panel receives the current grayscale screen data, and displays the current grayscale screen according to the grayscale screen data;
  • the image collector collects the full-screen optical information of the current gray-scale screen displayed on the display panel, and transmits the full-screen optical information of the current gray-scale screen to the processor;
  • the m grayscale screen GLm, the n grayscale screen GLn, and the g grayscale screen GLg (0 ⁇ m ⁇ n ⁇ g ⁇ 255) are the current grayscale screens, and step S11 is re-executed until all image acquisition ends.
  • the processor calculates the actual optical brightness value of each pixel corresponding to the full white grayscale screen GLO and the full black grayscale screen GL255 according to the fullscreen optical information corresponding to the full white grayscale screen GLO and the full black grayscale screen GL255.
  • the processor calculates the m gray scale picture GLm, the n gray scale picture GLn, the g gray scale picture GLg according to the full-frame optical information corresponding to the m gray scale picture GLm, the n gray scale picture GLn, the g gray scale picture GLg Corresponding actual optical brightness values Lvm (i, j), Lvn (i, j) and Lvg (i, j) of each pixel; where: 0 ⁇ i ⁇ H, 0 ⁇ j ⁇ V; H represents the current gray scale The total number of rows of the picture, i represents the i-th row of the current gray-scale picture; V represents the total number of columns of the current gray-scale picture, and j represents the j-th column of the current gray-scale picture;
  • the processor combines the target brightness values Lvm ′, Lvn ′, and Lvg ′ of the m grayscale screen GLm, the n grayscale screen GLn, and the g grayscale screen GLg with the grayscale grayscale screen GLm, the grayscale screen GLn, the grayscale
  • the actual optical brightness values Lvm (i, j), Lvn (i, j), and Lvg (i, j) of each pixel of the screen GLg are compared, and the compensated brightness value of the current pixel (i, j) is calculated, and respectively Obtain the grayscale correction matrix corresponding to the m grayscale screen GLm, the grayscale correction matrix corresponding to the n grayscale screen GLn, and the grayscale correction matrix corresponding to the g grayscale screen GLg; especially for the uneven display area of the display panel, the current
  • the actual optical brightness value Lvm (i, j) of the pixel may be higher or lower than the target brightness value.
  • S53 Store the full grayscale correction matrix of all grayscale images of the GL0-GL255 to the display panel.
  • the full-screen optical information of the full-black gray-scale screen GL0 and the full-white gray-scale screen GL255 is measured by optical instruments, and calculated based on the actual brightness values of the full-black gray-scale screen GL0 and the full-white gray-scale screen GL255.
  • the target brightness of the brightness information of the gray scale screen GLm, the gray scale screen GLn, and the gray scale screen GLg can avoid the optical brightness and the hope of the actual display of the brightness information of the gray scale screen GLm, the gray scale screen GLn, the gray scale screen GLg There is an error in the display brightness, which results in the target brightness of the brightness information of the gray scale screen GLm, the gray scale screen GLn, and the gray scale screen GLg not corresponding to the target brightness value under the standard gamma, which in turn causes the optical gamma shift of the display panel.
  • the target brightness of the brightness information of the grayscale screen GLm, the grayscale screen GLn, and the grayscale screen GLg is obtained, and then the actual brightness worth the target brightness of the brightness information of the grayscale screen GLm, the grayscale screen GLn, the grayscale screen GLg
  • the compensated brightness value is calculated, and the gray of the grayscale screen such as the grayscale grayscale screen GLm, grayscale screen GLn, grayscale screen GLg, etc.
  • the optical gamma of the display panel after the correction is closer to the standard optical gamma, avoiding the large difference between the display panel and the display panel.
  • the horse exceeds the standard specifications and affects the quality of the display panel.
  • a brightness correction device 100 of a display panel 200 using the above correction method including:
  • the image generator 140 generates a specific preset picture to the display panel 200 to be detected, and drives the display panel 200 to display a preset picture.
  • the specific preset picture includes but is not limited to a high-gray-scale picture such as an all-white screen and a low-gray-scale picture. Such as a completely black picture and a plurality of intermediate gray-scale pictures, such as a full picture with the same gray-scale value.
  • the optical information collector 110 such as a camera or other optical collector, collects at least one preset high-gray-scale full-frame optical information, a low-gray-scale full-frame optical information, and at least one intermediate gray-scale image.
  • the calculator 120 such as a computer or a processor, calculates the target corresponding to the intermediate gray-scale picture based on the full-frame optical information of the high-gray-scale picture and the full-frame optical information of the low-gray-scale picture obtained by the optical information collector Optical brightness value;
  • the grayscale corrector 130 such as a computer or a processor, compares the full-frame optical information of the intermediate grayscale image with the target optical brightness value corresponding to the current intermediate grayscale image to obtain a grayscale correction matrix corresponding to the current grayscale.
  • the technical solution of this application can be widely adapted to various display panels, such as twisted nematic (TN) display panel, in-plane switching (IPS) display panel, and vertical alignment (VA) Display panels, multi-quadrant vertical alignment (Multi-Domain Vertical Alignment, MVA) display panels, of course, can also be other types of display panels, such as organic light-emitting diode (Organic Light-Emitting Diode, OLED) display panels, can be applied The above program.
  • TN twisted nematic
  • IPS in-plane switching
  • VA vertical alignment
  • MVA multi-quadrant vertical alignment
  • OLED Organic Light-Emitting Diode

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Abstract

一种显示面板的亮度修正方法和修正设备，显示面板的亮度修正方法，包括步骤：全画面光学信息采集（A）；根据高灰阶画面的全画面光学信息和低灰阶画面的全画面光学信息计算得到和中间灰阶画面对应的目标光学亮度值（B）；通过比较中间灰阶画面的全画面光学信息和当前中间灰阶画面对应的目标光学亮度值，得到当前灰阶对应的灰阶修正矩阵（C）。

Description

显示面板的亮度修正方法和亮度修正设备
本申请要求于2018年10月22日提交中国专利局、申请号为CN201811231616.4、发明名称为“一种显示面板的亮度修正方法和亮度修正设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及显示技术领域，尤其涉及一种显示面板的亮度修正方法和亮度修正设备。
背景技术
这里的陈述仅提供与本申请有关的背景信息，而不必然地构成现有技术。
随着科技的发展和进步，液晶显示器由于具备机身薄、省电和辐射低等热点而成为显示器的主流产品，得到了广泛应用。平板显示器包括薄膜晶体管液晶显示器(Thin Film Transistor-Liquid Crystal Display，TFT-LCD)和有机发光二极管(Organic Light-Emitting Diode，OLED)显示器等。其中，薄膜晶体管液晶显示器通过控制液晶分子的旋转方向，以将背光模组的光线折射出来产生灰阶画面，具有机身薄、省电、无辐射等众多优点。而有机发光二极管显示器是利用有机电致发光二极管制成，具有自发光、响应时间短、清晰度与对比度高、可实现柔性显示与大面积全色显示等诸多优点。
而显示装置制作工序多且精细度高，不可避免地会出现一些品质不良的显示装置，如亮度偏移甚至是出现亮度不均匀(Mura)，造成各种痕迹的现象。大大降低了显示装置的产品良率，显示装置的伽马光学规格进行管控，进而导致显示装置的伽马光学性能超过管控范围。解决对显示面板亮度修正的同时达到伽马参数管控规格是值得研究的方向。
技术解决方案
本申请的目的在于提供一种显示面板的亮度修正方法和亮度修正设备，以解决对显 示面板亮度修正同时提高显示面板的伽马参数管控效果。
为实现上述目的，本申请提供了一种显示面板的亮度修正方法，包括以下步骤：
全画面光学信息采集：至少采集一个预设的高灰阶画面的全画面光学信息、一个低灰阶画面的全画面光学信息、和至少一个中间灰阶画面的全画面光学信息；
根据所述高灰阶画面的全画面光学信息和和低灰阶画面的全画面光学信息计算得到和中间灰阶画面对应的目标光学亮度值；
通过比较中间灰阶画面的全画面光学信息和当前中间灰阶画面对应的目标光学亮度值，得到当前灰阶对应的灰阶修正矩阵。
本申请还公开了一种显示面板的亮度修正设备，包括：
光学信息采集器，采集至少一个预设的高灰阶画面的全画面光学信息、一个低灰阶画面的全画面光学信息、和至少一个中间灰阶画面的全画面光学信息；
计算器，根据所述光学信息采集器获得的高灰阶画面的全画面光学信息和和低灰阶画面的全画面光学信息计算得到和中间灰阶画面对应的目标光学亮度值；以及
灰阶修正器，比较中间灰阶画面的全画面光学信息和当前中间灰阶画面对应的目标光学亮度值，得到当前灰阶对应的灰阶修正矩阵。
本申请以至少一个高灰阶画面的全画面光学信息和和一个低灰阶画面的全画面光学信息为原始数据，计算得到中间灰阶对应的目标光学亮度值，以对中间灰阶画面的实际全画面光学信息进行修正，得到灰阶修正矩阵，相对于以当前灰阶的实际全画面光学信息为对应的目标光学亮度值的方案来说，若显示面板板内均匀度差异较大，或显示面板本身变异导致光学伽马偏移较大，以当前灰阶的实际全画面光学信息的光学亮度值为目标光学亮度值，可能会导致灰阶修整后的显示面板的光学亮度超出伽马管控要求的范围；而本方案修正后的灰阶是按照规格计算得到的，更符合面板灰阶的伽马管控要求，大大减小了修正后的显示面板的灰阶在进行伽马参数规格检测的过程中，面板的伽马参数规格超出伽马管控的情况。
附图说明
所包括的附图用来提供对本申请实施例的进一步的理解，其构成了说明书的一部分，示例本申请的实施方式，并与文字描述一起来阐释本申请的原理。显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。在附图中：
图1是本申请实施例一种显示面板的亮度修正方法的流程的示意图；
图2是本申请另一实施例一种显示面板的亮度修正方法的流程的示意图；
图3是本申请实施例光学采集过程的流程示意图；
图4是本申请实施例目标光学亮度值计算过程的示意图；
图5是本申请实施例实际光学亮度值计算过程的示意图；
图6是本申请实施例一种显示不均区域的亮度补偿过程计算器的示意图；
图7是本申请实施例修正后画面检测评价过程的示意图；
图8是本申请实施例显示面板中心区域位置示意图；
图9是本申请实施例修正前后与标准伽马曲线示意图；
图10是本申请实施例一种显示面板的亮度修正设备结构示意图。
本申请的实施方式
这里所公开的具体结构和功能细节仅仅是代表性的，并且是描述本申请的示例性实施例的目的。但是本申请可以通过许多替换形式来具体实现，并且不应当被解释成仅仅受限于这里所阐述的实施例。
在本申请的描述中，需要理解的是，术语“中心”、“横向”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，术语“第一”、“第二”仅作描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本申请的描述中，除非另有说明，“多个”的含义是两个或两个以上。另外，术语“包括”及其任何变形，意图在于覆盖不排他的包含。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本申请中的具体含义。
这里所使用的术语仅仅是为了描述具体实施例而不意图限制示例性实施例。除非上下文明确地另有所指，否则这里所使用的单数形式“一个”、“一项”还意图包括复数。还应当理解的是，这里所使用的术语“包括”和/或“包含”规定所陈述的特征、整数、步骤、操作、单元和/或组件的存在，而不排除存在或添加一个或更多其他特征、整数、步骤、操作、单元、组件和/或其组合。
下面参考附图和较佳的实施例对本申请作进一步说明。
参考图1和图10所示，本申请实施例公布了一种显示面板的显示修正方法，包括以下步骤：
A：全画面光学信息采集：至少采集一个预设的高灰阶画面的全画面光学信息、一个低灰阶画面的全画面光学信息、和至少一个中间灰阶画面的全画面光学信息；
B：根据所述高灰阶画面的全画面光学信息和和低灰阶画面的全画面光学信息计算得到和中间灰阶画面对应的目标光学亮度值；
C：通过比较中间灰阶画面的全画面光学信息和当前中间灰阶画面对应的目标光学亮度值，得到当前灰阶对应的灰阶修正矩阵。
本方案中，以至少一个高灰阶画面的全画面光学信息和和一个低灰阶画面的全画面光学信息为原始数据，计算得到中间灰阶对应的目标光学亮度值，以对中间灰阶画面的实际全画面光学信息进行修正，得到灰阶修正矩阵，相对于以当前灰阶的实际全画面光学信息为对应的目标光学亮度值的方案来说，若显示面板板内均匀度差异较大，或显示面板本身变异导致光学伽马偏移较大，以当前灰阶的实际全画面光学信息的光学亮度值为目标光学亮度值，可能会导致灰阶修整后的显示面板的光学亮度超出伽马管控要求的范围；而本方案修正后的灰阶是按照规格计算得到的，更符合面板灰阶的伽马管控要求，大大减小了修正后的显示面板的灰阶在进行伽马参数规格检测的过程中，面板的伽马参数规格超出伽马管控的情况。
本实施例可选的，根据所述高灰阶画面的全画面光学信息和和低灰阶画面的全画面 光学信息计算得到和中间灰阶对应的目标光学亮度值的步骤包括：
根据高灰阶画面的全画面光学信息和低灰阶画面的全画面光学信息，计算得到所述高灰阶画面的平均亮度值LvA以及低灰阶画面的平均亮度值LvB；
根据公式：
Figure PCTCN2018119672-appb-000001
计算得到在标准伽马参数下，对应中间m灰阶画面的目标亮度值lvm’；
其中，所述的A、B为当前灰阶值；γ为所述显示面板预设的标准伽马参数。
本方案中，以高灰阶画面的平均亮度值LvA以及低灰阶画面的平均亮度值LvB，通过上述公式计算出中间m灰阶的目标亮度值lvm’，中间m灰阶画面的目标亮度值是符合标准伽马参数下的目标亮度值，后续步骤使用该目标亮度值时，可以避免出现误差，提高管控伽马规格的准确性。
在一实施例中，所述的低灰阶画面的灰阶范围为：0-32灰阶；所述的高灰阶画面的灰阶范围为：223-255灰阶。本方案中，首先获取0-32灰阶范围内一个低灰阶画面和一个223-255灰阶范围的高灰阶画面的全画面光学信息，在上述灰阶范围内，通过上述公式计算得到的目标亮度值都比较准确，更贴近所述显示面板的实际显示效果。
本实施例可选的，所述的全画面光学信息采集步骤中，所述低灰阶画面为全黑画面；所述的高灰阶画面为全白画面。因为全黑灰阶画面和全白灰阶画面，因为数据电压范围的原因，往往是不能通过调节对应不均匀区域的像素电极的数据电压进行亮度补偿的，因此此时的全黑灰阶画面和全白灰阶画面是真实显示的画面。以此灰阶两端的画面的实际全画面光学信息为目标亮度值的计算来源，可以使得显示面板的中间灰阶对应的目标光学亮度值更符合伽马管控要求。
在一实施例中，所述的全画面光学信息采集步骤中，至少采集三个不同的中间灰阶画面的全画面光学信息；
所述通过比较中间灰阶画面的全画面光学信息和当前中间灰阶画面对应的目标光学亮度值，得到当前灰阶对应的灰阶修正矩阵的步骤中，分别对上述三个不同的中间灰阶画面进行比较，得到三个不同的中间灰阶画面的灰阶修正矩阵；
之后，再通过插值运算，得到其他灰阶画面的灰阶修正矩阵。
本方案中，通过三个中间灰阶画面，插值计算得到其他灰阶画面的灰阶修正矩阵，这样对比逐个灰阶画面检测再计算修正矩阵的方式，本方案检测修正过程更快，计算的地的全灰阶画面的灰阶画面的灰阶修正矩阵是在标准数值下的，因而修正效果非常好。
在一实施例中，计算得到所述高灰阶画面的平均亮度值LvA以及低灰阶画面的平均亮度值LvB是选取灰阶画面的K*Q中心区域来计算的；其中K表示灰阶画面的高度，Q表示灰阶画面的宽度。
本方案中，在显示面板品质检测的过程常抓取显示的灰阶画面的中心区域的光学信息来评价显示面板品质的，在修正过程中过程选取选取灰阶画面的K*Q中心区域的光学信息来计算得到所述高灰阶画面的平均亮度值以及低灰阶画面的平均亮度值，这样在后续比较修正后，显示面板显示的灰阶画面更符合标准伽马参数下的亮度。
其中，所述中心区域的可以选取高度和宽度相同的区域，即K＝Q的中心区域；当然也可以选取K不等于Q的中心区域，选取随所述显示面板分辨率，而K与Q成等比例关系的中心区域。本领域的技术人员可以根据显示面板的特性和实际需求，对K、Q的取值范围灵活选取。
另一方面，由于人眼对显示画面的中间区域的关注度对比非中间区域的关注度更加敏感，选取显示画面的中心区域计算修正过程所述需要的数值，是的全画面的亮度是符合人眼的关注的舒适度，这样有利于提高视觉体验。
在一实施例中，所述的显示面板的亮度修正方法还包括以下步骤：
根据各灰阶修正矩阵中各像素的补偿亮度值，显示面板对实际输入的画面，以补偿修正后的亮度进行驱动，在显示面板上显示；
对修正后的灰阶画面进行伽马参数规格确认：若显示面板伽马参数规格确认不合格，则反馈不合格；若伽马参数规格确认合格，则进入后续阶段。
本方案中，显示面板伽马参数规格确认不合格，则反馈不合格，这样提示检测人员对不合格的显示面板进行返工处理或者其他修正处理，提高了检测人员的检测拦检率，避免品质不良的显示面板流入下后续过程，增加产线的生产难度；若伽马参数规格确认合格，则进入后续阶段，这样可以提高检测人员的检测速度，有利提高生产效率。
在一实施例中，通过比较中间灰阶画面的全画面光学信息和当前中间灰阶画面对应的目标光学亮度值，得到当前灰阶对应的灰阶修正矩阵的步骤包括：
将当前灰阶画面的目标亮度值，与当前灰阶画面的每个像素的实际光学亮度值进行 比较，计算当前灰阶画面每个像素的补偿亮度值，并分别得到当前灰阶画面对应的灰阶修正矩阵。
本方案中，当前灰阶画面的目标亮度值是通过计算的，与当前灰阶画面的每个像素的实际光学亮度值进行比较，计算当前灰阶画面每个像素的补偿亮度值，并分别得到当前灰阶画面对应的灰阶修正矩阵。经过亮度修正后，显示面板的显示不均匀的情况获得明显改善，甚至对于不是显示不均匀的显示面板来说，显示面板整体亮度偏移的情况也可以通过亮度修正进行改善。这样的设计可以在亮度修正后，同时兼顾显示面板的伽马参数规格超出伽马管控的情况。
本申请又一实施例公布了一种显示面板的显示亮度修正方法，包括以下步骤：
全画面光学信息采集：采集一个预设的全白灰阶画面的全画面光学信息、一个全黑灰阶画面的全画面光学信息、和m灰阶画面、n灰阶画面、g灰阶画面的全画面光学信息，其中,m、n、g为灰阶值，0<m<n<g<255；
根据全白灰阶画面的全画面光学信息和全黑灰阶画面的全画面光学信息，计算得到所述全白灰阶画面的平均亮度值Lv255以及全黑灰阶画面的平均亮度值Lv0；
根据公式：
Figure PCTCN2018119672-appb-000002
Figure PCTCN2018119672-appb-000003
Figure PCTCN2018119672-appb-000004
计算得到在标准伽马参数下，对应m灰阶画面、n灰阶画面、g灰阶画面的目标亮度值lvm’、lvn’、lvg’；
其中，所述的m、n、g为当前灰阶值；γ为所述显示面板预设的标准伽马参数；
m灰阶画面、n灰阶画面、g灰阶画面对应的目标光学亮度值lvm’、lvn’、lvg’与m灰阶画面、n灰阶画面、g灰阶画面的每个像素的实际光学亮度值Lvm(i，j)、Lvn(i，j)、Lvg(i，j)进行比较，得到m灰阶画面、n灰阶画面、g灰阶画面对应的灰阶修正矩阵；
之后，再通过插值运算，得到其他灰阶的灰阶修正矩阵。
如图2至图7所示，本申请又一实施例公布了一种显示面板的显示修正方法，包括：
光学采集过程：
S1：以灰阶数值＝0时的全黑灰阶画面GL0为当前灰阶画面数据，执行以下步骤：
S11:图像生成器输出当前灰阶画面数据到显示面板；
S12:显示面板接收当前灰阶画面数据，并根据所述灰阶画面数据显示当前灰阶画面；
S13：图像采集器采集显示面板显示的当前灰阶画面的全画面光学信息，并将当前灰阶画面的全画面光学信息传送至处理器；
S2：分别以灰阶数值＝255时的全白灰阶画面GL255，以及全黑灰阶画面GL0至全白灰阶画面GL255之间至少三个互不相同的灰阶数值分别为m、n、g的m灰阶画面GLm、n灰阶画面GLn、g灰阶画面GLg(0<m<n<g<255)为当前灰阶画面，重新执行步骤S11，直至所有图像采集结束。
目标光学亮度值计算过程：
S31：处理器根据所述全白灰阶画面GLO和全黑灰阶画面GL255对应的全画面光学信息,计算得到全白灰阶画面GLO和全黑灰阶画面GL255对应的每个像素的实际光学亮度值Lv0(i，j)和Lv255(i，j)；其中：0≤i≤H，0≤j≤V；H表示当前灰阶画面的总行数，i表示当前灰阶画面的第i行；V代表当前灰阶画面的总列数，j表示当前灰阶画面的第j列；
S32：分别计算所述全白灰阶画面GLO和全黑灰阶画面GL255中心区域的平均亮度值Lv0及Lv255，其中，所述中心区域可以为K*K个像素；
S33：根据公式，计算得到在标准伽马参数下，对应m灰阶画面GLm、n灰阶画面GLn、g灰阶画面GLg的目标亮度值Lvm′、Lvn′、Lvg′：
其中，所述公式为：
Figure PCTCN2018119672-appb-000005
Figure PCTCN2018119672-appb-000006
Figure PCTCN2018119672-appb-000007
实际光学亮度值计算过程：
S4：处理器根据所述m灰阶画面GLm、n灰阶画面GLn、g灰阶画面GLg对应的全画面光学信息,计算得到m灰阶画面GLm、n灰阶画面GLn、g灰阶画面GLg对应的每个像素的实际光学亮度值Lvm(i，j)、Lvn(i，j)和Lvg(i，j)；其中：0≤i≤H，0≤j≤V；H表示当前灰阶画面的总行数，i表示当前灰阶画面的第i行；V代表当前灰阶画面的总列数，j表示当前灰阶画面的第j列；
显示不均区域亮度补偿计算过程：(生成三个中间灰阶画面的灰阶修正矩阵)
S51:处理器将m灰阶画面GLm、n灰阶画面GLn、g灰阶画面GLg的目标亮度值Lvm′、Lvn′、Lvg′，与灰阶灰阶画面GLm、灰阶画面GLn、灰阶画面GLg的每个像素的实际光学亮度值Lvm(i，j)、Lvn(i，j)和Lvg(i，j)分别进行比较，计算当前像素(i，j)的补偿亮度值，并分别得到m灰阶画面GLm对应的灰阶修正矩阵、n灰阶画面GLn对应的灰阶修正矩阵，和g灰阶画面GLg对应的灰阶修正矩阵；尤其是针对显示面板的显示不均区域，当前像素的实际光学亮度值Lvm(i，j)可能是高于或低于目标亮度值的，在计算得到当前像素的补偿亮度值后，根据补偿亮度值对实际的灰阶值进行补偿，即可将过高或过低的实际光学亮度校正到希望的目标亮度值；
S52:根据m灰阶画面GLm对应的灰阶修正矩阵、n灰阶画面GLn对应的灰阶修正矩阵，和g灰阶画面GLg对应的灰阶修正矩阵，利用插值的方法计算得到GL0～GL255所有灰阶画面的全灰阶修正矩阵；
S53：将所述GL0～GL255所有灰阶画面的全灰阶修正矩阵储存至所述显示面板中。
修正后画面检测评价过程：
S61:根据储存的GL0～GL255所有灰阶画面的全灰阶修正矩阵，根据各灰阶修正矩阵中各像素的补偿亮度值，显示面板对实际输入的画面，以补偿修正后的亮度进行驱动， 在显示面板上显示；
S62：对修正后的灰阶画面进行伽马参数规格确认：若显示面板伽马参数规格确认不合格，则反馈不合格；若伽马参数规格确认合格，则进入后续阶段。
本方案中，全黑灰阶画面GL0、全白灰阶画面GL255的全画面光学信息是通过光学仪器量测得到的，根据全黑灰阶画面GL0、全白灰阶画面GL255的实际亮度值，计算得出灰阶画面GLm、灰阶画面GLn、灰阶画面GLg的亮度信息的目标亮度，可以避免灰阶画面GLm、灰阶画面GLn、灰阶画面GLg的亮度信息的实际显示时的光学亮度与希望的显示亮度存在误差，导致灰阶画面GLm、灰阶画面GLn、灰阶画面GLg的亮度信息的目标亮度比标准伽马下的目标亮度值不对应，进而导致显示面板的光学伽马偏移。通过计算得到灰阶画面GLm、灰阶画面GLn、灰阶画面GLg的亮度信息的目标亮度，进而与灰阶画面GLm、灰阶画面GLn、灰阶画面GLg的亮度信息的目标亮度的实际亮度值得出补偿亮度值，根据灰阶灰阶画面GLm、灰阶画面GLn、灰阶画面GLg的补偿亮度值计算出灰阶灰阶画面GLm、灰阶画面GLn、灰阶画面GLg等灰阶画面的灰阶修正矩阵，最后根据灰阶修正矩阵进修，修正后显示面板的光学伽马与标准的光学伽马更加贴近，避免了显示面板因为自身的差异大，导致显示面板消除mura后，显示面板光学伽马超出标准的规格进而影响显示面板品质。
作为本申请的另一实施例，参考图10所示，公开了一种使用上述修正方法的显示面板200的亮度修正设备100，包括：
图像生成器140，产生特定预设画面给待检测的显示面板200，驱动显示面板200显示预设画面，所述特定预设画面包括但不限于高灰阶画面如全白画面，低灰阶画面如全黑画面和多个中间灰阶画面，如同一灰阶数值的全画面。
光学信息采集器110，如相机或者其他光学采集器，采集至少一个预设的高灰阶画面的全画面光学信息、一个低灰阶画面的全画面光学信息、和至少一个中间灰阶画面的全画面光学信息；
计算器120，如计算机或者处理器等，根据所述光学信息采集器获得的高灰阶画面的全画面光学信息和和低灰阶画面的全画面光学信息计算得到和中间灰阶画面对应的目标光学亮度值；
灰阶修正器130，如计算机或者处理器等，比较中间灰阶画面的全画面光学信息和当前中间灰阶画面对应的目标光学亮度值，得到当前灰阶对应的灰阶修正矩阵。
需要说明的是，本方案中涉及到的各步骤的限定，在不影响具体方案实施的前提下，并不认定为对步骤先后顺序做出限定，写在前面的步骤可以是在先执行的，也可以是在后执行的，甚至也可以是同时执行的，只要能实施本方案，都应当视为属于本申请的保护范围。
本申请的技术方案可以广泛适合各种显示面板，如扭曲向列型(Twisted Nematic，TN)显示面板、平面转换型(In-Plane Switching，IPS)显示面板、垂直配向型(Vertical Alignment，VA)显示面板、多象限垂直配向型(Multi-Domain Vertical Alignment，MVA)显示面板，当然，也可以是其他类型的显示面板，如有机发光二极管(Organic Light-Emitting Diode，OLED)显示面板，均可适用上述方案。
以上内容是结合具体的优选实施方式对本申请所作的进一步详细说明，不能认定本申请的具体实施只局限于这些说明。对于本申请所属技术领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干简单推演或替换，都应当视为属于本申请的保护范围。

Claims (17)

  1. 一种显示面板的亮度修正方法，包括以下步骤：
    全画面光学信息采集：至少采集一个预设的高灰阶画面的全画面光学信息、一个低灰阶画面的全画面光学信息、和至少一个中间灰阶画面的全画面光学信息；
    根据所述高灰阶画面的全画面光学信息和和低灰阶画面的全画面光学信息计算得到和中间灰阶画面对应的目标光学亮度值；以及
    通过比较中间灰阶画面的全画面光学信息和当前中间灰阶画面对应的目标光学亮度值，得到当前灰阶对应的灰阶修正矩阵。
  2. 根据权利要求1所述一种显示面板的亮度修正方法，其中，所述根据所述高灰阶画面的全画面光学信息和和低灰阶画面的全画面光学信息计算得到和中间灰阶对应的目标光学亮度值的步骤包括：
    根据高灰阶画面的全画面光学信息和低灰阶画面的全画面光学信息，计算得到所述高灰阶画面的平均亮度值LvA以及低灰阶画面的平均亮度值LvB；
    根据公式：
    Figure PCTCN2018119672-appb-100001
    计算得到在标准伽马参数下，对应m灰阶的目标亮度值lvm’；
    其中，所述的A、B、m为对应的灰阶值；γ为所述显示面板预设的标准伽马参数。
  3. 根据权利要求2所述一种显示面板的亮度修正方法，其中，所述低灰阶画面的灰阶范围为：0-32灰阶；
    所述高灰阶画面的灰阶范围为：223-255灰阶。
  4. 根据权利要求1所述一种显示面板的亮度修正方法，其中，所述的全画面光学信息采集步骤中，所述低灰阶画面为全黑画面；
  5. 根据权利要求4所述一种显示面板的亮度修正方法，其中，所述的全画面光学信息采集步骤中，所述的高灰阶画面为全白画面。
  6. 根据权利要求1所述一种显示面板的亮度修正方法，其中，所述的全画面光学信息采集步骤中，至少采集三个不同的中间灰阶画面的全画面光学信息；
    所述通过比较中间灰阶画面的全画面光学信息和当前中间灰阶画面对应的目标光学亮度值，得到当前灰阶对应的灰阶修正矩阵的步骤中，分别对上述三个不同的灰阶进 行比较，得到三个不同的灰阶对应的灰阶修正矩阵；
  7. 根据权利要求6所述一种显示面板的亮度修正方法，其中，所述通过比较中间灰阶画面的全画面光学信息和当前中间灰阶画面对应的目标光学亮度值，得到当前灰阶对应的灰阶修正矩阵的步骤中，分别对上述三个不同的灰阶进行比较，得到三个不同的灰阶对应的灰阶修正矩阵后，还包括步骤；
    通过插值运算，得到其他灰阶的灰阶修正矩阵。
  8. 根据权利要求2所述一种显示面板的亮度修正方法，其中，计算得到所述高灰阶画面的平均亮度值LvA以及低灰阶画面的平均亮度值LvB是选取灰阶画面的K*Q中心区域计算平均值的；
    其中K表示灰阶画面的高度，Q表示灰阶画面的宽度。
  9. 根据权利要求1所述一种显示面板的亮度修正方法，其中，所述显示面板的亮度修正方法还包括以下步骤：
    根据各灰阶修正矩阵中各像素的补偿亮度值，对实际输入的画面，以补偿修正后的亮度进行驱动，在显示面板上显示；
  10. 根据权利要求9所述一种显示面板的亮度修正方法，其中，根据各灰阶修正矩阵中各像素的补偿亮度值，对实际输入的画面，以补偿修正后的亮度进行驱动，在显示面板上显示后，包括步骤：
    对修正后的灰阶画面进行伽马参数规格确认：
  11. 根据权利要求10所述一种显示面板的亮度修正方法，其中，对修正后的灰阶画面进行伽马参数规格确认后，包括步骤；
    若显示面板伽马参数规格确认不合格，则反馈不合格；
  12. 根据权利要求10所述一种显示面板的亮度修正方法，其中，根据各灰阶修正矩阵中各像素的补偿亮度值，对实际输入的画面，以补偿修正后的亮度进行驱动，在显示面板上显示后，包括步骤：
    若伽马参数规格确认合格，则进入后续阶段。
  13. 根据权利要求1所述一种显示面板的亮度修正方法，其中，所述通过比较中间灰阶画面的全画面光学信息和当前中间灰阶画面对应的目标光学亮度值，得到当前灰阶对应的灰阶修正矩阵的步骤包括：
    将当前灰阶画面的目标亮度值，与当前灰阶画面的每个像素的实际光学亮度值进行比较，计算当前像素的补偿亮度值，并分别得到当前灰阶画面对应的灰阶修正矩阵。
  14. 根据权利要求8所述一种显示面板的亮度修正方法，其中，所述K*Q中心区域 的灰阶画面高度与灰阶画面宽度相等；
  15. 根据权利要求8所述一种显示面板的亮度修正方法，其中，所述K*Q中心区域的灰阶画面高度与灰阶画面宽度成比例关系。
  16. 一种显示面板的亮度修正方法，包括以下步骤：
    全画面光学信息采集：采集一个预设的全白灰阶画面的全画面光学信息、一个全黑灰阶画面的全画面光学信息、和m灰阶画面、n灰阶画面、g灰阶画面的全画面光学信息，其中,m、n、g为灰阶值，0<m<n<g<255；
    根据全白灰阶画面的全画面光学信息和全黑灰阶画面的全画面光学信息，计算得到所述全白灰阶画面的平均亮度值Lv255以及全黑灰阶画面的平均亮度值Lv0；以及
    根据公式：
    Figure PCTCN2018119672-appb-100002
    Figure PCTCN2018119672-appb-100003
    Figure PCTCN2018119672-appb-100004
    计算得到在标准伽马参数下，对应m灰阶画面、n灰阶画面、g灰阶画面的目标亮度值lvm’、lvn’、lvg’；
    其中，所述的m、n、g为当前灰阶值；γ为所述显示面板预设的标准伽马参数；
    m灰阶画面、n灰阶画面、g灰阶画面对应的目标光学亮度值lvm’、lvn’、lvg’与m灰阶画面、n灰阶画面、g灰阶画面的每个像素的实际光学亮度值Lvm(i，j)、Lvn(i，j)、Lvg(i，j)进行比较，得到m灰阶画面、n灰阶画面、g灰阶画面对应的灰阶修正矩阵；
    之后，再通过插值运算，得到其他灰阶的灰阶修正矩阵。
  17. 一种显示面板的亮度修正设备，包括：
    光学信息采集器，采集至少一个预设的高灰阶画面的全画面光学信息、一个低灰阶画面的全画面光学信息、和至少一个中间灰阶画面的全画面光学信息；
    计算器，根据所述光学信息采集器获得的高灰阶画面的全画面光学信息和和低灰阶画面的全画面光学信息计算得到和中间灰阶画面对应的目标光学亮度值；以及
    灰阶修正器，比较中间灰阶画面的全画面光学信息和当前中间灰阶画面对应的目标光学亮度值，得到当前灰阶对应的灰阶修正矩阵。
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