WO2011140742A1 - 校正lcd屏gamma值的方法和装置 - Google Patents

校正lcd屏gamma值的方法和装置 Download PDF

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Publication number
WO2011140742A1
WO2011140742A1 PCT/CN2010/075558 CN2010075558W WO2011140742A1 WO 2011140742 A1 WO2011140742 A1 WO 2011140742A1 CN 2010075558 W CN2010075558 W CN 2010075558W WO 2011140742 A1 WO2011140742 A1 WO 2011140742A1
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Prior art keywords
lcd screen
gamma value
value
gamma
module
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PCT/CN2010/075558
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English (en)
French (fr)
Inventor
王力刚
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中兴通讯股份有限公司
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to US13/386,415 priority Critical patent/US20130093656A1/en
Priority to EP10851247A priority patent/EP2456209A4/en
Publication of WO2011140742A1 publication Critical patent/WO2011140742A1/zh

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Classifications

    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/2003Display of colours
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/34Control 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
    • G09G3/36Control 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
    • G09G3/3607Control 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 for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00Details of colour television systems
    • H04N9/64Circuits for processing colour signals
    • H04N9/68Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits
    • H04N9/69Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits for modifying the colour signals by gamma correction
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00Control of display operating conditions
    • G09G2320/02Improving the quality of display appearance
    • G09G2320/0242Compensation of deficiencies in the appearance of colours
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00Control of display operating conditions
    • G09G2320/02Improving the quality of display appearance
    • G09G2320/0271Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
    • G09G2320/0276Adjustment 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
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00Control of display operating conditions
    • G09G2320/04Maintaining the quality of display appearance
    • G09G2320/043Preventing or counteracting the effects of ageing
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00Control of display operating conditions
    • G09G2320/06Adjustment of display parameters
    • G09G2320/0673Adjustment of display parameters for control of gamma adjustment, e.g. selecting another gamma curve

Definitions

  • the present invention relates to the field of LCD screen display, and more particularly to a method and apparatus for correcting gamma values of an LCD screen. Background technique
  • LCD Liquid Crystal Display
  • gamma value gray coefficient
  • the main defects of LCD screens commonly used in mobile communication terminal products are: poor display performance, mainly reflected in the phenomenon of color shift or chromatic aberration such as reddish or bluish on the screen; poor color contrast.
  • the main reasons for the above defects are:
  • the LCD screen currently used can only control the gamma value of the LCD screen by adjusting the brightness of the white backlight, thereby balancing the brightness, chromaticity and contrast of the LCD screen, and the method cannot separately control the LCD screen.
  • the gamma values of the three colors of RGB (red, green, and blue) cause color shift and chromatic aberration.
  • a primary object of the present invention is to provide a method and apparatus for correcting a gamma value of an LCD panel, which can improve the display effect of the LCD panel.
  • a method for correcting a gamma value of an LCD screen according to the present invention includes the following steps: setting different working state values of the LCD screen;
  • Gamma reflecting the LCD screen display effect corresponding to different working state values of the LCD screen The value is sampled to obtain a gamma value
  • the setting different working state values of the LCD screen specifically includes:
  • the working state value of the LCD screen display module is a red backlight module, a green backlight module, and a blue backlight module in the LCD screen display module.
  • the working state value of the LCD screen display module is a red backlight module, a green backlight module, and a blue backlight module in the LCD screen display module.
  • the gamma value representing the display effect of the LCD screen corresponding to different working state values of the LCD screen is sampled, and the step of obtaining the gamma value after the step further comprises:
  • the sample gamma value is stored accordingly.
  • the step of fitting the sample gamma value to the standard gamma curve to obtain a fitting gamma value that best matches the standard gamma curve comprises:
  • the gamma value of the sample is compared with the standard gamma value in the standard gamma curve to obtain the closest fitting gamma value to the standard gamma value, and a fitting gamma value parameter table is formed.
  • the working state of the LCD screen comprises: LCD screen brightness, contrast, saturation and/or gray scale.
  • the invention provides a device for correcting a gamma value of an LCD screen, comprising:
  • a setting module configured to set different working state values of the LCD screen
  • a measuring module configured to perform a sample gamma value according to different working state values of the LCD screen, and to obtain a gamma value of the LCD screen display effect
  • a fitting module configured to fit the sample gamma value to a standard gamma curve to obtain a gamma value that J most conforms to the standard gamma curve;
  • a parameter application adjustment module configured to save a corresponding working state value of the LCD screen corresponding to the fitted gamma value; and is further configured to read according to a preset matching gamma value and a working relationship value of the LCD screen Corresponding working state value of the LCD screen corresponding to the fitted gamma value, and adjusting the working state value of the current LCD screen.
  • the setting module is further configured to set an operating state value of the LCD screen display module under different display effects, wherein:
  • the working state value of the LCD screen display module is a combination of different working state values of the red backlight module, the green backlight module, and the blue backlight module in the LCD screen display module; the red backlight module and the green backlight
  • the different operating state values of the module and the blue backlight module are discrete current values that gradually increase from zero in increments of one tenth of the maximum value of the backlight current source.
  • the device further comprises:
  • a data storage module configured to store the sample gamma value according to an operating state sequence of a red backlight module, a green backlight module, and a blue backlight module in the LCD screen display module .
  • the fitting module is further configured to compare the stored gamma value with a standard gamma value in a standard gamma curve to obtain a fitting gamma value closest to the standard gamma value, and form a fitting gamma Value parameter table.
  • the working state of the LCD screen comprises: LCD screen brightness, contrast, saturation Degree and / or gray scale.
  • the invention improves the display effect of the LCD screen by adjusting the gamma values of the RGB three colors of the LCD screen separately, that is, the red, green and blue lights respectively, and optimizes the current working state value of the LCD screen by optimizing the LCD screen.
  • the display effect solves the problem of color shift or chromatic aberration caused by aging of the device and poor performance of the LCD screen of the existing product, and reduces the maintenance cost caused by the return or repair caused by the poor display effect of the LCD screen.
  • FIG. 1 is a schematic flow chart of a method for correcting a gamma value of an LCD screen according to an embodiment of the present invention
  • FIG. 2 is a schematic flow chart showing a setting process of different operating state values of a red backlight module in the above embodiment
  • FIG. 3 is a schematic flow chart showing the setting of different working state values of the green backlight module in the above embodiment
  • FIG. 4 is a schematic flow chart showing the setting of different working state values of the blue backlight module in the above embodiment
  • FIG. 5 is a schematic structural view of an apparatus for correcting a gamma value of an LCD screen according to the present invention. detailed description
  • Fig. 1 is a flow chart showing an embodiment of a method of correcting a gamma value of an LCD panel of the present invention.
  • a method for correcting a gamma value of an LCD screen includes the following steps:
  • Step 101 Set different working state values of the LCD screen.
  • Step 102 Perform a sample gamma value corresponding to different working state values of the LCD screen and display the effect of the LCD screen display, to obtain a gamma value;
  • Step 103 Store the gamma value according to the working state sequence of the red backlight module, the green backlight module, and the blue backlight module in the LCD screen display module.
  • the application environment of the embodiment includes at least: an LCD screen display module, a red backlight module, a green backlight module, and a blue backlight module in the LCD screen.
  • setting different working state values of the LCD screen specifically includes: setting an operating state value of the LCD screen display module under different display effects, wherein the working state value of the LCD screen display module is red in the LCD screen display module.
  • the current values of the backlight current source are 10-001, 10-002, and 10-003, respectively, indicating the operating status values of the red backlight module, the green backlight module, and the blue backlight module, and the red backlight module and the green backlight module.
  • the different operating state values of the blue backlight module are discrete current values that are gradually increased from zero in increments of one tenth of the maximum value of the backlight current source.
  • the specific setting process of the different working state values of the red backlight module is: Step 1001, setting the LCD screen display module to display red;
  • Step 1002 setting the current values of the backlight current source 10 - 001, 10 - 002, 10 - 003 are 1/10 Idd Max, 0, 0 respectively (Idd Max is the maximum current output by the backlight current source); In the middle, only the current value of the red backlight current source is changed, and the current values of the other two colors (blue and green) backlight current sources are all zero and remain unchanged. The same is true when the different working state values of the blue and green backlights are set below.
  • Step 1003 Measure the current values of the backlight current source 10—001, 10—002, and 10-003 to obtain a sample gamma value, and save the sample gamma value;
  • Step 1004 increasing the current of 10 001 gradually by using 1/10 of Idd Max as an increment value. Then, step 1003 is repeated, and the measured gamma values are sequentially recorded, the gamma values are saved, and the plurality of gamma values are sequentially stored.
  • the specific setting process of the different working state values of the green backlight module is: Step 2001, setting the LCD screen display module to display green;
  • Step 2002 setting the current values of the backlight current source 10-001, 10-002, 10-003 are 0, 1/lO Idd—Max, 0 (Idd—Max is the maximum current output by the backlight current source); 2003, measuring the current values of the backlight current source 10-001, 10-002, 10-003, obtaining a gamma value, and saving the gamma value;
  • the specific setting process of the different working state values of the blue backlight module is: Step 3001, setting the LCD screen display module to display blue;
  • Step 3002 setting the current values of the backlight current source 10—001, 10—002, and 10-003 are 0, 0, 1/10 Idd—Max (Idd—Max is the maximum current output by the backlight current source); 3003, measuring the current values of the backlight current source 10-001, 10-002, 10-003, obtaining a gamma value, and saving the gamma value;
  • Step 3004 stepping up the current of 10 to 003 by using 1/10 of Idd_Max as an increment value, and then repeating step 3003, sequentially recording the measured gamma values of the plurality of samples, and storing the gamma value of the sample, and Multiple gamma values are sequentially saved in sequence.
  • different working state values of the LCD screen are sequentially sampled, and a gamma value corresponding to different display effects of the LCD screen is obtained, and a gamma value parameter table is formed; according to the red backlight module in the LCD screen display module
  • the working state sequence of the green backlight module and the blue backlight module is performed by using the gamma value in the above-mentioned gamma value parameter table.
  • the purpose of storage is to facilitate the subsequent fitting of the gamma value to the standard gamma curve, and compare the gamma value with the corresponding standard gamma value in the standard gamma curve.
  • Step 104 fitting the gamma-like value to the standard gamma curve to obtain a fitted gamma value that best matches the standard gamma curve;
  • the gamma value of the sample is compared with the standard gamma value in the standard gamma curve to obtain the closest fitting gamma value to the standard gamma value, and a fitting gamma value parameter table is formed.
  • the gamma curve is a special tone curve.
  • the curve is a line at 45° to the coordinate axis, indicating that the input and output densities are the same; a gamma value higher than 1 will cause the output to brighten. A gamma value below 1 will cause the output to darken.
  • the standard requirement is that the input and output ratios are as close as possible to one.
  • Step 106 Read a corresponding working state value of the LCD screen corresponding to the fitting gamma value according to a preset relationship between the preset fitting gamma value and the working state value of the LCD screen, and adjust the working state value of the current LCD screen.
  • the working states of the LCD screen include: LCD screen brightness, contrast, gray scale, and
  • the terminal When the user needs to change the working state of the LCD screen to reset the working state of the LCD screen, for example, if the user sets the current LCD screen brightness to 5 levels, the terminal according to the pre- The corresponding relationship between the fitted gamma value and the working state value of the LCD screen is read, and the corresponding working state value of the LCD screen corresponding to the gamma value is read, that is, the red backlight module in the LCD screen display module is read (LED-R) Module), green backlight module (LED-G module) and blue backlight module (LED-B module) work status value, thus adjusting the current LCD screen working status value, that is, adjusting the current LCD screen display module red
  • the operating status values of the backlight module, the green backlight module, and the blue backlight module are used to improve the display of the LCD screen.
  • FIG. 5 is a block diagram showing an embodiment of an apparatus for correcting a gamma value of an LCD screen according to the present invention.
  • the device for correcting the gamma value of the LCD screen includes: a setting module 206, configured to set different working state values of the LCD screen 205;
  • the measuring module 202 is configured to compare the gamma value of the display effect of the LCD screen 205 according to different working state values of the LCD screen, to obtain a gamma value;
  • the data storage module 203 is configured to store the gamma values according to the working state of the red backlight module 20511, the green backlight module 20512, and the blue backlight module 20513 in the LCD screen display module 2051.
  • a fitting module 207 is configured to fit the gamma value of the sample with the standard gamma curve to obtain a gamma value that best fits the standard gamma curve;
  • the parameter application adjustment module 204 is configured to save the corresponding working state value of the LCD screen 205 corresponding to the fitted gamma value, and according to the preset fitting gamma value and the LCD screen working state. Corresponding relationship of values, reading the corresponding working state value of the LCD screen 205 corresponding to the fitted gamma value, and adjusting the working state value of the current LCD screen 205.
  • the above modules are all disposed in the terminal, and are connected to the terminal main control chip 201 through the data line, and the terminal main control chip 201 controls its operation.
  • the LCD screen 205 in this embodiment is connected to the terminal main control chip 201 through the setting module 206 for outputting the display effect; the LCD screen 205 includes:
  • the LCD screen display module 2051 is configured to display different colors and obtain an LCD screen display module 2051 working state value.
  • the LCD screen display module 2051 specifically includes:
  • a red backlight module 20511 for providing a red backlight source for the LCD screen display module 2051;
  • the green backlight module 20512 is configured to provide a green backlight source for the LCD screen display module 2051;
  • the blue backlight module 20513 is used to provide a blue backlight source for the LCD screen display module 2051.
  • the terminal main control chip 201 is connected to each functional module through a data line, and the internal circuit connection thereof is:
  • the current value of the backlight current source in the terminal main control chip 201 (10-001, 10-002, 10-003), the current output end thereof is connected to the red backlight module (LED-R) 20511 through the data line via the setting module 206, a green backlight module (LED_G) 20512 and a blue backlight module (LED_B) 20513 are connected;
  • the terminal main control chip 201 is connected to the LCD display module 2051 via a setting module 206 via a led bus (LED) to control the LCD display module (LCD) 2051;
  • the terminal master chip 201 is connected to the measurement module 202 via a usb bus (usb_bus) to control the measurement module (GAMMA_sensor) 202;
  • the terminal master chip 201 is connected to the data storage module 203 through a ram bus (ram bus). Controlling the access of the data gamma value by the data storage module 203;
  • the terminal master chip 201 is connected to the fitting module 207 via a data line to control the fitting module 207 to fit the sample gamma value to the standard gamma curve;
  • the terminal master chip 201 is connected to the parameter application adjustment module 204 via a flash bus (flash-bus) to control the access and adjustment of the fitting gamma value by the parameter application adjustment module 204.
  • flash bus flash-bus
  • the terminal main control chip 201 can be controlled through the keyboard.
  • the measurement module (GAMMA_sensor) 202 is connected to the terminal main control chip through the usb bus. 201, and the measurement module 202 is facing the LCD screen 205.
  • the terminal control chip 201 is controlled to enter the gamma data sampling mode through the keyboard input.
  • the terminal main control chip 201 will follow the method steps of correcting the LCD screen 205 gamma value according to the embodiment shown in FIG. 2, and respectively set by the setting module 206.
  • the different operating state values of the red backlight module 20511, the green backlight module 20512, and the blue backlight module 20513 in the LCD screen display module 2051 are measured by the measurement module 202 for the gamma value corresponding to the working state value of the LCD panel 205.
  • the gamma value is combined with the standard gamma curve to obtain the gamma value that best fits the standard gamma curve, and the fitting gamma value parameter table is obtained.
  • the terminal main control chip 201 controls the operating state value of the LCD screen 205 corresponding to the closest fitting gamma value, that is, the current value of the backlight current source 10-001, 10-002, 10-003 in the parameter application adjustment module. 204.
  • the terminal main control chip 201 starts the parameter application adjustment function according to the currently set working state of the LCD screen 205, and improves the display effect. For example, if the current brightness of the LCD screen 205 is set to 5, the terminal main control chip 201 reads and saves.
  • the current values of the corresponding backlight current source are 10-001, 10-002, 10-003 on the parameter application adjustment module 204, and the current working state value of the LCD screen 205 is adjusted (reset) to achieve the purpose of adjusting the current brightness.
  • the user can also adjust the current LCD screen 205 settings, such as setting the brightness of the LCD screen 205 to level 3 or saturation, gray scale, etc., to achieve the purpose of adjusting the display effect of the LCD screen 205.
  • the gamma values of the three colors of the LCD screen 205 can be separately adjusted, thereby improving the display effect of the LCD screen 205, if the original LCD
  • the screen 205 has a reddish 5%, and the driving current value of the red backlight module 20511 is reduced by 5% by the method of separately adjusting the three color lights, thereby solving the problem of display redness and improving the display effect.
  • the current working state value of the LCD screen 205 can be re-adjusted to optimize the display effect, which can make up for the problem that the prior art cannot adjust the color shift, and solve the color shift caused by the aging of the device and the performance deterioration of the LCD 205 of the existing product.
  • the chromatic aberration problem reduces the maintenance cost caused by the poor return of the LCD screen 205, the replacement of the hardware and the maintenance, and the user's operation of the device provided by the present invention is simple and convenient.

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  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
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Abstract

本发明提供一种校正LCD屏gamma值的方法和装置,用于解决现有LCD屏只能通过调节白色背光灯亮度来控制LCD屏的gamma值来平衡LCD屏亮度、色度和对比度,无法分开控制LCD屏RGB三色各自的gamma值,从而造成色偏和色差的问题。本发明通过采用分别调整LCD屏RGB三色各自的gamma值即红、绿和蓝三色光分开调整的方法,提高了LCD屏的显示效果,而且通过重新调整LCD屏的当前工作状态值,优化显示效果。

Description

校正 LCD屏 gamma值的方法和装置 技术领域
本发明涉及 LCD屏显示领域,尤其涉及一种校正 LCD屏伽马( gamma ) 值的方法和装置。 背景技术
LCD ( Liquid Crystal Display, 液晶显示)屏广泛应用在手机、 电脑、 电视以及相机等需要显示的众多领域。通常以调节 LCD屏的 gamma值(灰 度系数) 来达到调节 LCD屏显示效果的目的。
目前, 移动通讯终端产品普遍釆用的 LCD屏存在的主要缺陷有: 显示 效果差, 主要体现在屏幕有偏红或偏蓝等色偏或色差问题; 色彩对比度差。 导致上述缺陷的主要原因在于: 目前使用的 LCD屏只能通过调节白色背光 灯亮度来控制 LCD屏的 gamma值, 以此来平衡 LCD屏亮度、 色度和对比 度, 而该方法无法分开控制 LCD屏 RGB (红色、 绿色和蓝色)三色各自的 gamma值, 从而造成色偏和色差的问题。 同时, 通过调节白色背光灯亮度 来控制 LCD屏的 gamma值只是出厂时一次性调节, 无法应对以后因器件 老化导致性能下降所引起的色偏或色差等问题。 发明内容
本发明的主要目的在于提供一种校正 LCD屏 gamma值的方法和装置, 可提高 LCD屏的显示效果。
本发明提出的一种校正 LCD屏 gamma值的方法, 包括以下步骤: 设置 LCD屏的不同工作状态值;
对与 LCD屏的不同工作状态值对应的体现 LCD屏显示效果的 gamma 值进行釆样 , 得到釆样 gamma值;
将所述釆样 gamma值与标准 gamma曲线进行拟合, 得到最符合标准 gamma曲线的拟合 gamma值;
将与所述拟合 gamma值对应的 LCD屏的对应工作状态值保存; 根据预设的拟合 gamma值与 LCD 屏工作状态值的对应关系, 读取与 所述拟合 gamma值对应的 LCD屏的对应工作状态值, 并调整当前 LCD屏 的工作状态值。
优选地, 所述设置 LCD屏的不同工作状态值具体包括:
设置 LCD屏显示模块在不同显示效果下的工作状态值, 其中: 所述 LCD屏显示模块的工作状态值为 LCD屏显示模块中的红色背光 灯模块、 绿色背光灯模块以及蓝色背光灯模块的不同工作状态值的组合; 所述红色背光灯模块、 绿色背光灯模块以及蓝色背光灯模块的不同工 作状态值是以背光灯电流源最大值的十分之一为递增值的从零逐步增大的 离散的电流值。
优选地, 所述对与 LCD屏的不同工作状态值对应的体现 LCD屏显示 效果的 gamma值进行釆样, 得到釆样 gamma值步骤后还包括:
按照 LCD屏显示模块中的红色背光灯模块、 绿色背光灯模块以及蓝色 背光灯模块的工作状态顺序, 将所述釆样 gamma值进行相应存储。
优选地,所述将所述釆样 gamma值与标准 gamma曲线进行拟合,得到 最符合标准 gamma曲线的拟合 gamma值的步骤具体包括:
将存 4诸过的釆样 gamma值和标准 gamma曲线中的标准 gamma值进行 比较, 得到和标准 gamma值最接近的拟合 gamma值, 并形成拟合 gamma 值参数表。
优选地, 所述 LCD屏的工作状态包括: LCD屏亮度、 对比度、 饱和 度和 /或灰度。 本发明提出一种校正 LCD屏 gamma值的装置, 包括:
设置模块, 用于设置 LCD屏的不同工作状态值;
测量模块, 用于根据 LCD屏的不同工作状态值对体现 LCD屏显示效 果的 gamma值进行釆样 , 得到釆样 gamma值;
拟合模块,用于将所述釆样 gamma值与标准 gamma曲线进行拟合,得 J最符合标准 gamma曲线的以合 gamma值;
参数应用调整模块, 用于将与所述拟合 gamma值对应的 LCD屏的对 应工作状态值保存; 以及还用于根据预设的拟合 gamma值与 LCD 屏工作 状态值的对应关系, 读取与所述拟合 gamma值对应的 LCD屏的对应工作 状态值, 并调整当前 LCD屏的工作状态值。
优选地, 所述设置模块, 还用于设置 LCD屏显示模块在不同显示效果 下的工作状态值, 其中:
所述 LCD屏显示模块的工作状态值为 LCD屏显示模块中的红色背光 灯模块、 绿色背光灯模块以及蓝色背光灯模块的不同工作状态值的组合; 所述红色背光灯模块、 绿色背光灯模块以及蓝色背光灯模块的不同工 作状态值是以背光灯电流源最大值的十分之一为递增值的从零逐步增大的 离散的电流值。
优选地, 该装置还包括:
数据存储模块, 用于将所述釆样 gamma值按照 LCD屏显示模块中的 红色背光灯模块、 绿色背光灯模块以及蓝色背光灯模块的工作状态顺序, 将所述釆样 gamma值进行相应存储。
优选地,所述拟合模块,还用于将存储过的釆样 gamma值和标准 gamma 曲线中的标准 gamma值进行比较, 得到和标准 gamma值最接近的拟合 gamma值 , 并形成拟合 gamma值参数表。
优选地, 所述 LCD屏的工作状态包括: LCD屏亮度、 对比度、 饱和 度和 /或灰度。 本发明通过釆用分别调整 LCD屏 RGB三色各自的 gamma值即红、 绿 和蓝三色光分开调整的方法, 提高了 LCD屏的显示效果, 而且通过重新调 整 LCD屏的当前工作状态值, 优化显示效果, 解决现有产品 LCD屏因器 件老化、 性能变差导致的色偏或色差问题, 降低了由于 LCD屏显示效果差 造成的客退或维修造成的维护成本。 附图说明
图 1是本发明一种校正 LCD屏 gamma值的方法一实施例流程示意图; 图 2是上述实施例中红色背光灯模块的不同工作状态值的设置流程示 意图;
图 3是上述实施例中绿色背光灯模块的不同工作状态值的设置流程示 意图;
图 4是上述实施例中蓝色背光灯模块的不同工作状态值的设置流程示 意图;
图 5是本发明一种校正 LCD屏 gamma值的装置一实施例结构示意图。 具体实施方式
为了使本发明的技术方案更加清楚、 明了, 下面将结合附图作进一步 详述:
图 1示出了本发明一种校正 LCD屏 gamma值的方法一实施例流程示 意图。
如图 1所示, 本发明实施例提出的一种校正 LCD屏 gamma值的方法, 包括以下步骤:
步骤 101 , 设置 LCD屏的不同工作状态值; 步骤 102,对与 LCD屏的不同工作状态值对应的体现 LCD屏显示效果 的 gamma值进行釆样 , 得到釆样 gamma值;
步骤 103 , 按照 LCD屏显示模块中的红色背光灯模块、 绿色背光灯模 块以及蓝色背光灯模块的工作状态顺序, 将釆样 gamma值进行相应存储。 本实施例运用环境至少包括: LCD屏中的 LCD屏显示模块、 红色背光 灯模块、 绿色背光灯模块以及蓝色背光灯模块等。
上述步骤 101中,设置 LCD屏的不同工作状态值具体包括: 设置 LCD 屏显示模块在不同显示效果下的的工作状态值, 其中, LCD屏显示模块的 工作状态值为 LCD屏显示模块中的红色背光灯模块、 绿色背光灯模块以及 蓝色背光灯模块的不同工作状态值的组合。
以背光灯电流源的电流值 10— 001、 10— 002、 10— 003分别表示红色背光 灯模块、 绿色背光灯模块以及蓝色背光灯模块的工作状态值, 红色背光灯 模块、 绿色背光灯模块以及蓝色背光灯模块的不同工作状态值是以背光灯 电流源最大值的十分之一为递增值的从零逐步增大的的离散的电流值。 如图 2所示, 红色背光灯模块的不同工作状态值的具体设置过程为: 步骤 1001 , 设置 LCD屏显示模块显示红色;
步骤 1002 , 设置背光灯电流源的电流值 10— 001、 10—002、 10— 003分 别为 1/10 Idd Max、 0、 0 ( Idd Max为背光灯电流源输出的最大电流); 在设置过程中,仅改变红色背光灯电流源的电流值, 其它两种颜色(蓝 色和绿色) 背光灯电流源的电流值均为零, 且保持不变。 在下面设置蓝色 和绿色背光灯的不同工作状态值时, 与此同理。
步骤 1003 , 对背光灯电流源的电流值 10— 001、 10— 002、 10— 003进行 测量釆样, 得到一个釆样 gamma值, 并将釆样 gamma值进行保存;
步骤 1004, 以 Idd Max的 1/10为递增值, 逐步增大 10 001的电流, 之后重复步骤 1003 ,依次记录测量得到的多个釆样 gamma值 ,将釆样 gamma 值进行保存, 且多个釆样 gamma值依次连续存储。 如图 3所示, 绿色背光灯模块的不同工作状态值的具体设置过程为: 步骤 2001 , 设置 LCD屏显示模块显示绿色;
步骤 2002 , 设置背光灯电流源的电流值 10— 001、 10—002、 10— 003分 别为 0、 1/lO Idd— Max、 0 ( Idd— Max为背光灯电流源输出的最大电流); 步骤 2003 , 对背光灯电流源的电流值 10— 001、 10— 002、 10— 003进行 测量釆样, 得到一个釆样 gamma值, 将釆样 gamma值进行保存;
步骤 2004, 以 Idd— Max的 1/10为递增值, 逐步增大 10— 002的电流, 之后重复步骤 2003 , 依次记录得到的多个釆样 gamma值, 将釆样 gamma 值进行保存, 多个釆样 gamma值依次连续存储。 如图 4所示, 蓝色背光灯模块的不同工作状态值的具体设置过程为: 步骤 3001 , 设置 LCD屏显示模块显示蓝色;
步骤 3002 , 设置背光灯电流源的电流值 10— 001、 10—002、 10— 003分 别为 0、 0、 1/10 Idd— Max ( Idd— Max为背光灯电流源输出的最大电流); 步骤 3003 , 对背光灯电流源的电流值 10— 001、 10— 002、 10— 003进行 测量釆样, 得到一个釆样 gamma值, 并将釆样 gamma值进行保存;
步骤 3004, 以 Idd— Max的 1/10为递增值, 逐步增大 10— 003的电流, 之后重复步骤 3003 ,依次记录测量得到的多个釆样 gamma值,将釆样 gamma 值进行保存, 且多个釆样 gamma值依次连续保存。
按照上述方法, 对 LCD屏的不同工作状态值依次进行釆样, 得到对应 LCD屏不同显示效果的釆样 gamma值, 并形成釆样 gamma值参数表; 按 照 LCD屏显示模块中的红色背光灯模块、 绿色背光灯模块以及蓝色背光灯 模块的工作状态顺序,将上述釆样 gamma值参数表中的釆样 gamma值进行 相应存储,存储的目的是便于后续釆样 gamma值与标准 gamma曲线进行拟 合的步骤中, 将釆样 gamma值与标准 gamma曲线中对应的标准 gamma值 进行相应比较。 步骤 104, 将釆样 gamma值与标准 gamma曲线进行拟合, 得到最符合 标准 gamma曲线的拟合 gamma值;
将存 4诸过的釆样 gamma值和标准 gamma曲线中的标准 gamma值进行 比较, 得到和标准 gamma值最接近的拟合 gamma值, 并形成拟合 gamma 值参数表。
gamma曲线是一种特殊的色调曲线, 当 gamma值等于 1的时候, 曲线 为与坐标轴成 45°的直线, 表示输入和输出密度相同; 高于 1的 Gamma值 将会造成输出亮化, 而低于 1的 Gamma值将会造成输出暗化。 标准的要求 是输入和输出比率尽可能地接近于 1。 步骤 105 , 将与拟合 gamma值对应的 LCD屏的对应工作状态值保存。 将存 4诸过的釆样 gamma值和标准 gamma曲线中的标准 gamma值进行 比较,得到和标准 gamma值最接近的拟合 gamma值时,将该最接近的拟合 gamma值对应的 10— 001、 10—002、 10— 003电流源设置值进行保存。 步骤 106, 根据预设的拟合 gamma值与 LCD 屏工作状态值的对应关 系, 读取与拟合 gamma值对应的 LCD屏的对应工作状态值, 并调整当前 LCD屏的工作状态值。
本实施例中, LCD屏的工作状态包括: LCD屏亮度、 对比度、 灰度和
/或饱和度等。
当用户需要对 LCD屏的工作状态进行改变即对 LCD屏的工作状态进 行重新设置时, 比如用户设置当前 LCD屏亮度设置为 5级, 则终端根据预 设的拟合 gamma值与 LCD 屏工作状态值的对应关系, 读取与拟合 gamma 值对应的 LCD屏的对应工作状态值, 即读取 LCD屏显示模块中的红色背 光灯模块( LED— R模块 )、 绿色背光灯模块( LED— G模块)以及蓝色背光 灯模块( LED— B模块)的工作状态值,从而调整当前 LCD屏的工作状态值, 即调整当前 LCD屏显示模块中的红色背光灯模块、 绿色背光灯模块以及蓝 色背光灯模块的工作状态值, 以改善 LCD屏的显示效果。 本实施例通过釆用分别调整 LCD屏 RGB三色各自的 gamma值即红、 绿和蓝三色光分开调整的方法, 提高了 LCD屏的显示效果, 而且通过重新 调整 LCD屏的当前工作状态值, 优化显示效果, 解决现有产品 LCD屏因 器件老化、 性能变差导致的色偏或色差问题, 降低了由于 LCD屏显示效果 差造成的客退或维修造成的维护成本。 图 5示出了本发明一种校正 LCD屏 gamma值的装置一实施例结构示 意图。
如图 5所示, 本发明提出的一种校正 LCD屏 gamma值的装置, 包括: 设置模块 206, 用于设置 LCD屏 205的不同工作状态值;
测量模块 202 , 用于根据 LCD屏的不同工作状态值对体现 LCD屏 205 显示效果的 gamma值进行釆样 , 得到釆样 gamma值;
数据存储模块 203 ,用于按照 LCD屏显示模块 2051中的红色背光灯模 块 20511、绿色背光灯模块 20512以及蓝色背光灯模块 20513的工作状态顺 序, 将釆样 gamma值进行相应存储。
拟合模块 207 , 用于将釆样 gamma值与标准 gamma曲线进行拟合, 得 J最符合标准 gamma曲线的以合 gamma值;
参数应用调整模块 204,用于将与拟合 gamma值对应的 LCD屏 205的 对应工作状态值保存, 以及根据预设的拟合 gamma值与 LCD 屏工作状态 值的对应关系, 读取与拟合 gamma值对应的 LCD屏 205的对应工作状态 值, 并调整当前 LCD屏 205的工作状态值。
以上模块均设置在终端内, 且均通过数据线与终端主控芯片 201连接, 由终端主控芯片 201控制其工作。
本实施例中的 LCD屏 205 , 通过设置模块 206与终端主控芯片 201连 接, 用于输出显示效果; LCD屏 205包括:
LCD屏显示模块 2051 ,用于显示不同颜色,得到 LCD屏显示模块 2051 工作状态值; 其中, LCD屏显示模块 2051具体包括:
红色背光灯模块 20511 ,用于为 LCD屏显示模块 2051提供红色背光光 源;
绿色背光灯模块 20512,用于为 LCD屏显示模块 2051提供绿色背光光 源;
蓝色背光灯模块 20513 ,用于为 LCD屏显示模块 2051提供蓝色背光光 源。
终端主控芯片 201 通过数据线与各功能模块连接, 其内部电路连接具 体为:
终端主控芯片 201中背光灯电流源的电流值( 10— 001、 10— 002、 10— 003 ) 其电流输出端通过数据线经设置模块 206分别与红色背光灯模块 ( LED— R ) 20511、 绿色背光灯模块(LED_G ) 20512以及蓝色背光灯模块( LED_B ) 20513连接;
终端主控芯片 201通过 led总线( led— bus )经设置模块 206与 LCD显 示模块 2051连接以控制 LCD显示模块( LCD ) 2051 ;
终端主控芯片 201通过 usb总线( usb— bus )与测量模块 202连接以控 制测量模块( GAMMA_sensor ) 202;
终端主控芯片 201通过 ram总线 ( ram bus )与数据存储模块 203连接 以控制数据存储模块 203对釆样 gamma值的存取;
终端主控芯片 201通过数据线与拟合模块 207连接以控制拟合模块 207 将釆样 gamma值与标准 gamma曲线进行拟合;
终端主控芯片 201通过 flash总线( flash— bus )与参数应用调整模块 204 连接以控制参数应用调整模块 204对拟合 gamma值的存取与调整。
当用户通过本装置对出现色差或色偏的 LCD屏 205进行调整时, 可通 过键盘来控制终端主控芯片 201 , 首先, 通过 usb 总线将测量模块 ( GAMMA— sensor ) 202连接到终端主控芯片 201 , 并使测量模块 202正对 LCD屏 205。 然后通过键盘输入控制终端主控芯片 201进入 gamma数据釆 样模式, 终端主控芯片 201将按照如图 2所示实施例提出的一种校正 LCD 屏 205gamma值的方法步骤, 通过设置模块 206分别设置 LCD屏显示模块 2051 中的红色背光灯模块 20511、 绿色背光灯模块 20512以及蓝色背光灯 模块 20513的不同工作状态值, 通过测量模块 202对对应 LCD屏 205工作 状态值的 gamma值进行釆样 , 得到釆样 gamma值 , 形成釆样 gamma值参 数表, 并将釆样 gamma值参数表中的 gamma值存储在数据存储模块 203 上,再通过拟合模块 207将釆样 gamma值参数表中的釆样 gamma值与标准 gamma曲线进行以合, 得 j最符合标准 gamma曲线的以合 gamma值, 并 得到拟合 gamma值参数表。 由终端主控芯片 201 控制将该最接近的拟合 gamma 值对应的 LCD 屏 205 的工作状态值即背光灯电流源的电流值 10—001、 10—002、 10— 003保存在参数应用调整模块 204上。
此时, 终端主控芯片 201根据 LCD屏 205的当前已经设置的工作状态 启动参数应用调整功能, 改善显示效果, 比如 LCD屏 205的当前亮度设置 为 5级, 则终端主控芯片 201读取保存在参数应用调整模块 204上对应的 背光灯电流源的电流值 10—001、 10—002、 10— 003 , 并调整(重新设置) LCD 屏 205的当前工作状态值以达到调整当前亮度的目的。 用户也可以通过改变当前 LCD屏 205的设置比如设置 LCD屏 205的 亮度为 3级或饱和度、灰度等,以达到调整 LCD屏 205的显示效果的目的。
本实施例根据 LCD 屏 205 的不同工作状态, 可分别调整 LCD 屏 205RGB三色各自的 gamma值即红、 绿以及蓝三色光分开调整的方法, 提 高了 LCD屏 205的显示效果, 如果原来的 LCD屏 205有偏红 5%, 通过三 色光分开调整的方法, 将红色背光灯模块 20511的驱动电流值减少 5%, 解 决了显示偏红的问题,提高了显示效果。如此,可通过重新调整 LCD屏 205 的当前工作状态值, 优化显示效果, 弥补了现有技术无法调整色偏的问题, 解决现有产品 LCD屏 205因器件老化、 性能变差导致的色偏或色差问题, 降低了由于 LCD屏 205显示效果差造成的客退或更换硬件、 维修造成的维 护成本, 而其用户操作本发明提供的装置简单易行, 十分方便。
以上所述仅为本发明的优选实施例, 并非因此限制本发明的专利范围, 凡是利用本发明说明书及附图内容所作的等效结构或流程变换, 或直接或 间接运用在其他相关的技术领域, 均同理包括在本发明的专利保护范围内。

Claims

权利要求书
1、 一种校正 LCD屏伽马 (gamma )值的方法, 其特征在于, 该方法 包括:
设置液晶显示 (LCD )屏的不同工作状态值;
对与 LCD屏的不同工作状态值对应的体现 LCD屏显示效果的 gamma 值进行釆样 , 得到釆样 gamma值;
将所述釆样 gamma值与标准 gamma曲线进行拟合, 得到最符合标准 gamma曲线的拟合 gamma值;
根据预设的拟合 gamma值与 LCD 屏工作状态值的对应关系, 读取与 所述拟合 gamma值对应的 LCD屏的对应工作状态值, 并调整当前 LCD屏 的工作状态值。
2、根据权利要求 1所述的校正 LCD屏 gamma值的方法,其特征在于, 所述设置 LCD屏的不同工作状态值包括:
设置 LCD屏显示模块在不同显示效果下的工作状态值, 其中: 所述 LCD屏显示模块的工作状态值为 LCD屏显示模块中的红色背光 灯模块、 绿色背光灯模块以及蓝色背光灯模块的不同工作状态值的组合; 所述红色背光灯模块、 绿色背光灯模块以及蓝色背光灯模块的不同工 作状态值是以背光灯电流源最大值的十分之一为递增值的从零逐步增大的 离散的电流值。
3、根据权利要求 2所述的校正 LCD屏 gamma值的方法,其特征在于, 所述对与 LCD屏的不同工作状态值对应的体现 LCD屏显示效果的 gamma 值进行釆样, 得到釆样 gamma值步骤后还包括:
按照 LCD屏显示模块中的红色背光灯模块、 绿色背光灯模块以及蓝色 背光灯模块的工作状态顺序, 将所述釆样 gamma值进行相应存储。
4、 根据权利要求 1至 3任一项所述的校正 LCD屏 gamma值的方法, 其特征在于,所述将所述釆样 gamma值与标准 gamma曲线进行拟合,得到 最符合标准 gamma曲线的拟合 gamma值的步骤包括:
将存储的釆样 gamma值和标准 gamma曲线中的标准 gamma值进行比 较 , 得到和标准 gamma值最接近的拟合 gamma值, 并形成拟合 gamma值 参数表。
5、根据权利要求 4所述的校正 LCD屏 gamma值的方法,其特征在于, 所述 LCD屏的工作状态包括: LCD屏亮度、 对比度、 饱和度和 /或灰度。
6、 一种校正 LCD屏 gamma值的装置, 其特征在于, 该装置包括: 设置模块, 用于设置 LCD屏的不同工作状态值;
测量模块, 用于根据 LCD屏的不同工作状态值对体现 LCD屏显示效 果的 gamma值进行釆样 , 得到釆样 gamma值;
拟合模块,用于将所述釆样 gamma值与标准 gamma曲线进行拟合,得 J最符合标准 gamma曲线的以合 gamma值;
参数应用调整模块, 用于将与所述拟合 gamma值对应的 LCD屏的对 应工作状态值保存; 以及还用于根据预设的拟合 gamma值与 LCD 屏工作 状态值的对应关系, 读取与所述拟合 gamma值对应的 LCD屏的对应工作 状态值, 并调整当前 LCD屏的工作状态值。
7、根据权利要求 6所述的校正 LCD屏 gamma值的装置,其特征在于, 所述设置模块用于设置 LCD屏显示模块在不同显示效果下的工作状态 值, 其中:
所述 LCD屏显示模块的工作状态值为 LCD屏显示模块中的红色背光 灯模块、 绿色背光灯模块以及蓝色背光灯模块的不同工作状态值的组合; 所述红色背光灯模块、 绿色背光灯模块以及蓝色背光灯模块的不同工 作状态值是以背光灯电流源最大值的十分之一为递增值的从零逐步增大的 离散的电流值。
8、根据权利要求 7所述的校正 LCD屏 gamma值的装置,其特征在于, 所述装置还包括:
数据存储模块, 用于将所述釆样 gamma值按照 LCD屏显示模块中的 红色背光灯模块、 绿色背光灯模块以及蓝色背光灯模块的工作状态顺序, 将所述釆样 gamma值进行相应存储。
9、 根据权利要求 6、 7或 8所述的校正 LCD屏 gamma值的装置, 其 特征在于,
所述拟合模块将存储的釆样 gamma值和标准 gamma 曲线中的标准 gamma值进行比较, 得到和标准 gamma值最接近的拟合 gamma值, 并形 成拟合 gamma值参数表。
10、 根据权利要求 9所述的校正 LCD屏 gamma值的装置, 其特征在 于,
所述 LCD屏的工作状态包括: LCD屏亮度、 对比度、 饱和度和 /或灰 度。
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Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104008736B (zh) * 2013-02-26 2017-07-07 合肥京东方光电科技有限公司 自动调节液晶显示器伽马曲线的装置、光学调试装置
US10741116B2 (en) 2013-12-18 2020-08-11 Kunshan New Flat Panel Display Tech. Cr. Co. Ltd. Method and device for determining Gamma parameters and displaying method
CN104732953B (zh) * 2013-12-18 2017-10-17 昆山工研院新型平板显示技术中心有限公司 Gamma参数的确定方法和装置以及显示器的显示方法和装置
CN104299592B (zh) * 2014-11-07 2016-11-23 深圳市华星光电技术有限公司 液晶面板及其驱动方法
CN105679255A (zh) * 2014-11-21 2016-06-15 东莞宇龙通信科技有限公司 LCD显示屏的Gamma值烧录方法和烧录装置
CN109417616B (zh) 2016-08-22 2020-05-08 华为技术有限公司 用于图像处理的方法和装置
US10170080B2 (en) 2016-09-06 2019-01-01 Apple Inc. Electronic device having ancillary display with color control
CN107124602B (zh) * 2017-05-24 2018-10-19 四川长虹电器股份有限公司 生产线自动Gamma曲线调试方法
WO2019047114A1 (zh) * 2017-09-07 2019-03-14 深圳传音通讯有限公司 一种液晶显示伽马曲线调试方法及调试系统
US10643517B2 (en) * 2017-11-03 2020-05-05 HKC Corporation Limited Display device and display driving method
CN107767830B (zh) * 2017-11-03 2020-05-26 惠科股份有限公司 一种显示装置和显示驱动方法
CN110853560B (zh) * 2018-08-21 2022-10-21 西安中兴新软件有限责任公司 一种显示校正方法、装置、设备及存储介质
CN109147642B (zh) * 2018-09-18 2021-10-08 深圳市理邦精密仪器股份有限公司 显示屏gamma校正方法及其装置
KR102622612B1 (ko) * 2018-12-20 2024-01-09 주식회사 엘엑스세미콘 백라이트의 전력 소비를 절감하기 위한 영상데이터처리장치 및 디스플레이 장치
CN110634444B (zh) * 2019-09-24 2021-02-02 昆山国显光电有限公司 一种显示面板的补偿方法
CN114615482A (zh) * 2020-12-09 2022-06-10 深圳Tcl数字技术有限公司 一种白平衡调试方法、存储介质及智能电视
CN112992036B (zh) * 2021-02-26 2022-05-31 北海惠科光电技术有限公司 一种显示面板的驱动方法、装置及显示设备

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005017324A (ja) * 2003-06-23 2005-01-20 Hitachi Ltd 液晶表示装置
CN1324902C (zh) * 2004-02-16 2007-07-04 钰瀚科技股份有限公司 色彩校正的方法
CN101419783A (zh) * 2007-10-22 2009-04-29 中华映管股份有限公司 伽玛曲线校正方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004053715A (ja) * 2002-07-17 2004-02-19 Sanyo Electric Co Ltd 表示装置とそのγ補正方法
US7663597B2 (en) * 2003-07-16 2010-02-16 Honeywood Technologies, Llc LCD plateau power conservation
TWI307873B (en) * 2005-03-23 2009-03-21 Au Optronics Corp Gamma voltage generator and lcd utilizing the same
KR101117981B1 (ko) * 2005-05-12 2012-03-06 엘지디스플레이 주식회사 데이터 드라이버 및 이를 이용한 액정 표시장치
JP3848358B1 (ja) * 2006-02-15 2006-11-22 株式会社日出ハイテック マルチチャネル駆動回路
JP2008102379A (ja) * 2006-10-20 2008-05-01 Hitachi Ltd 画像表示装置及び画像表示方法
CN102013246B (zh) * 2009-09-07 2013-09-18 群康科技(深圳)有限公司 显示装置的伽马对应表的建立方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005017324A (ja) * 2003-06-23 2005-01-20 Hitachi Ltd 液晶表示装置
CN1324902C (zh) * 2004-02-16 2007-07-04 钰瀚科技股份有限公司 色彩校正的方法
CN101419783A (zh) * 2007-10-22 2009-04-29 中华映管股份有限公司 伽玛曲线校正方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2456209A4 *

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