WO2015096111A1 - 一种液晶显示器及其液晶显示器的亮度和对比度的调整方法 - Google Patents

一种液晶显示器及其液晶显示器的亮度和对比度的调整方法 Download PDF

Info

Publication number
WO2015096111A1
WO2015096111A1 PCT/CN2013/090606 CN2013090606W WO2015096111A1 WO 2015096111 A1 WO2015096111 A1 WO 2015096111A1 CN 2013090606 W CN2013090606 W CN 2013090606W WO 2015096111 A1 WO2015096111 A1 WO 2015096111A1
Authority
WO
WIPO (PCT)
Prior art keywords
display
output
signal
difference
contrast
Prior art date
Application number
PCT/CN2013/090606
Other languages
English (en)
French (fr)
Inventor
刘明
Original Assignee
深圳市华星光电技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市华星光电技术有限公司 filed Critical 深圳市华星光电技术有限公司
Priority to US14/440,107 priority Critical patent/US20160293117A1/en
Publication of WO2015096111A1 publication Critical patent/WO2015096111A1/zh

Links

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
    • G09G3/34Control 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
    • 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
    • G09G3/006Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
    • 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
    • G09G3/3611Control of matrices with row and column drivers
    • 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
    • G09G2320/0233Improving the luminance or brightness uniformity across the screen
    • 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
    • G09G2320/06Adjustment of display parameters
    • G09G2320/0626Adjustment of display parameters for control of overall brightness
    • 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
    • G09G2320/066Adjustment of display parameters for control of contrast
    • 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
    • G09G2320/0686Adjustment of display parameters with two or more screen areas displaying information with different brightness or 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
    • G09G2320/06Adjustment of display parameters
    • G09G2320/0693Calibration of display systems

Definitions

  • the present invention relates to a liquid crystal display device and an adjustment method, and more particularly to a method of adjusting a uniform brightness and contrast of a large-sized liquid crystal display.
  • the liquid crystal display structure includes a liquid crystal panel, a backlight structure, and a driving circuit.
  • the driving circuit is connected to an external power source and a signal, which converts the external power source into a voltage range driven by the liquid crystal panel, and simultaneously converts the external signal into an identifiable signal displayed on the liquid crystal panel.
  • the liquid crystal panel driving mode is mostly single circuit mode, that is, the liquid crystal panel is square, has four sides, two long sides and two short sides, and the whole four sides are enclosed into one display panel, and the display panel is driven by one driving interface.
  • Drive that is, a positive circuit passes through the line circuit of the panel, and until the final winding back to the negative terminal of the drive interface, the current in the positive and negative circuits travels through the entire panel.
  • the circuit in the panel has a certain impedance, the current will gradually decay after passing through the entire panel, so that half of the display is brighter and half is darker, which causes the brightness of the left and right (or upper and lower) sides of the display to be different.
  • the display is not good.
  • the main object of the present invention is to provide a liquid crystal display having uniform brightness and contrast in each display area, which avoids a phenomenon in which a large-area display has a local area that is too bright or too dark, and the color depth is different.
  • the invention provides a liquid crystal display, which is provided with a plurality of display areas, a signal input module, a signal output module and a signal comparison module, wherein the signal input module is electrically connected to the display area to introduce a display driving signal, a signal thereto
  • the output module is electrically connected to the display area to respectively output the display driving signal to the output signal source in the corresponding display area to generate an image or image
  • the signal comparison module is electrically connected with the signal output module to respectively respectively output the output signal source of each display area.
  • the output signal sources of the display areas are compared to obtain a signal comparison result.
  • the current of the display driving signal is adjusted according to the difference between the two, so as to be displayed. After the difference between the current values of the region is continuously reduced, a new output signal source is generated and output to the display area output display, so that the brightness or contrast of the displayed image or image in each display area is nearly uniform.
  • an adjustable resistor or a tunable capacitor is respectively disposed in each display area, and the output current value of the display area is changed by changing the magnitude of the resistance value or the capacitance value, so that the brightness and contrast in the output signal source are changed.
  • the display areas are respectively disposed in different liquid crystal panels.
  • the signal comparison result includes flag information of the display area corresponding to the output signal source.
  • the present invention also provides a method for adjusting the brightness and contrast of a liquid crystal display, comprising the steps of: Step 1) inputting a display driving signal from a signal input module to a corresponding display area;
  • Step 2) Exporting the display driving signal to the output signal source in the corresponding display area to generate an image or image;
  • the setting display area comprises an A half display screen and a B half display screen
  • step 2) the display driving signal is derived from the first half frame of the A half display by the A half display, and the first frame data of the B half display is derived through the B half display;
  • Step 3 In the signal comparison module, comparing the first frame data of the A half display screen with the first frame data of the B half display screen to obtain a first difference, and adjusting the current magnitude of the display driving signal according to the first difference, and outputting The current of the display area having a higher brightness or contrast is subtracted from the first difference so that the brightness or contrast in the output image or image of the two halves of the display is nearly uniform.
  • the method further includes the following steps: Step 4) After the display driving signal is introduced into the A half display screen and the B half display screen according to the first frame data of the A half display screen and the B half display screen, respectively, The output of each of the half display screens is displayed, and the second frame data of the A half display screen and the second frame data of the B half display screen are exported to the signal comparison module for comparison to obtain the second difference, and the current of the display drive signal is adjusted according to the second difference. And subtracting the second difference from the current outputting the display area with higher display brightness or contrast, so that the brightness or contrast in the output image or image of the two half display screens is close to the same.
  • the difference between the output signals of the A half display and the B half display is decremented, and the second difference is less than the first difference.
  • the present invention divides a large-sized display screen into a plurality of half-display screens by split screen processing, and each half-display screen is seamlessly joined, and an adjustable resistor or a capacitor is provided, by adjusting a resistor or a capacitor.
  • Change the current compare the output signal sources of each half display, adjust the current corresponding to the half display according to the difference between the previous frames, and increase the brightness or contrast of the display by increasing the current, otherwise reduce.
  • the contrast value and the brightness value of each display area are adjusted one by one, and the brightness and contrast of each independent display panel are kept uniform, so that the brightness and contrast between the upper and lower panels and the left and right panels are stable and uniform. Display an image or image.
  • FIG. 1 is a circuit block diagram of a display driving signal adjustment of a liquid crystal display according to the present invention
  • FIG. 2 is a flow chart of a method for controlling a signal source of a liquid crystal display according to the present invention. detailed description
  • the present invention provides a liquid crystal display, which is provided with a plurality of display areas 1 , a signal input module 2 , a signal output module 3 , and a signal comparison module 4 , wherein the signal input module 2 and the display area 1 Electrically connected to introduce a display driving signal thereto, and the signal output module 3 is electrically connected to the display area 1 to respectively derive the display driving signal in the corresponding display area 1 to generate an image source or image, and the signal comparison module 4 and the signal The output module 3 is electrically connected to respectively compare the output signal sources of the display areas 1, and compare the output signal sources of the display areas 1 in the signal comparison module 4 to obtain a signal comparison result, when the two are different.
  • the brightness or contrast of the image or image displayed in the area is nearly the same.
  • Each of the display areas 1 is separated from each other, and is divided into a plurality of independent sub-panels, and the display areas are respectively disposed in different liquid crystal panels.
  • the display areas 1 are in close proximity to each other to maintain the consistency of the picture. It can be divided according to the size of the overall display, and the brightness or contrast of the image or image output from each display area can be corrected by adjusting the current in the input display.
  • the signal comparison result includes marking information of the display area corresponding to the output signal source, that is, the marking information indicating the display area to be adjusted in the signal comparison result, such as increasing the brightness of the display area of the second row and the third column. value.
  • the brightness parameter is represented by a voltage value.
  • an adjustable resistor or a tunable capacitor is respectively disposed in each display area, and the output current value of the display area is changed by changing the magnitude of the resistance value or the capacitance value.
  • the resistance increases, the current decreases, which is inversely proportional.
  • the capacitance increases, the current also increases, which is in a proportional relationship. Assuming that the image or image output by a certain half display is bright, the current of the half display is reduced correspondingly, and the new display driving signal is introduced, so that the image or image outputted by the corresponding half display is darkened, and each half display
  • the brightness and contrast tend to be consistent, avoiding the phenomenon that the local color is too deep and the local color is shallow in the display panel.
  • the present invention also provides a method for adjusting brightness and contrast of a liquid crystal display, which comprises the following steps:
  • Step 1) inputting a display driving signal from the signal input module 2 to the corresponding display area 1;
  • Step 2) Exporting the display driving signal to the output signal source in the corresponding display area 1 to generate an image or image;
  • the display display area includes an A half display screen and a B half display screen; of course, the size of the overall display screen may also be set, and each half display screen is marked to adjust the brightness of the corresponding display screen. Contrast.
  • step 2) the display driving signal is derived from the first half frame of the A half display through the A half display, and the first frame data of the B half display is derived through the B half display, and the image or image data is included in the first frame data.
  • Step 3 In the signal comparison module, comparing the first frame data of the A half display screen with the first frame data of the B half display screen to obtain a first difference, and adjusting the current magnitude of the display driving signal according to the first difference, and outputting The current of the display area having a higher brightness or contrast is subtracted from the first difference so that the brightness or contrast in the output image or image of the two halves of the display is nearly uniform.
  • the method further includes the following steps: Step 4) After the display driving signal is introduced into the A half display screen and the B half display screen according to the first frame data of the A half display screen and the B half display screen, respectively, The output of each of the half display screens is displayed, and the second frame data of the A half display screen and the second frame data of the B half display screen are exported to the signal comparison module for comparison to obtain the second difference, and the current of the display drive signal is adjusted according to the second difference. And subtracting the second difference from the current outputting the display area with higher display brightness or contrast, so that the brightness or contrast in the output image or image of the two half display screens is close to the same.
  • the difference between the output signals of the A half display screen and the B half display screen is decreased, the second difference is smaller than the first difference, and so on, and the difference between the brightness and the contrast is continuously reduced until When the difference is zero, the correction is stopped.
  • the display is divided into two halves, half called A half display and the other half called B half display.
  • the existing signal sources are picture information transmission of one frame and one frame. It is assumed that the first frame picture information in the display driving signal is transmitted to the display screen, and the A half display screen and the B half display screen in the display screen are equivalent.
  • the output signal source including the brightness, contrast and other parameters are output to the signal comparison module through the respective signal output modules, at this time, in the signal comparison module
  • Two sets of data will be presented, one set of data is the display parameter of brightness, contrast, contrast, etc.
  • the signal comparison module compares the first frame data of the A half display screen with the first frame data of the B half display screen to generate a difference C1, and the first frame data of the A half display screen (or the B half display screen) One frame of data) is down (or up) Cl.
  • the first frame data of the A half display screen and the second frame data of the B half display screen are compared to generate a difference C2, which is semi-displayed for A
  • the first frame data of the display screen (or the first frame data of the B half display screen) is repaired (or up) C2, and the correction is continuously adjusted until the final difference C is 0, and the correction is stopped, eventually making the A half display and the B half
  • the brightness and contrast of the image or image output from the display are adjusted.
  • the invention divides the large-sized display screen into a plurality of half-display screens by split screen processing, and the half-display screens are seamlessly joined, and an adjustable resistor or a capacitor is provided, and the current is changed by adjusting the resistance or the capacitance, and the half display is performed.
  • the output signal source of the screen is compared, and the current corresponding to the half display screen is adjusted according to the difference between the previous frames of the two frames.
  • the brightness or contrast of the display screen is increased, and vice versa.
  • the contrast value and the brightness value of each display area are adjusted one by one, and the brightness and contrast of each independent display panel are kept uniform, so that the brightness and contrast between the upper and lower panels and the left and right panels are stable and uniform. Display an image or image.

Landscapes

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

Abstract

一种液晶显示器,设有若干个显示区域(1)、信号输入模块(2)、信号输出模块(3)和信号比较模块(4),其中,信号输入模块(2)与显示区域(1)电连接,以向其导入显示驱动信号,信号输出模块(3)与显示区域(1)电连接,以分别将显示驱动信号在相应的显示区域(1)导出输出信号源,生成图像或影像,信号比较模块(4)与信号输出模块(3)电连接,以将各显示区域(1)的输出信号源进行比对,在信号比较模块(4)中将各显示区域(1)的输出信号源进行比较,获得信号比较结果,两者不相同时,根据两者差值对应调整显示驱动信号的电流大小,以将经各显示区域(1)的电流值之间差值不断缩小后,生成新的输出信号源输出至显示区域(1)输出显示,使得在各显示区域(1)中所显示图像或影像的亮度或对比度接近一致。

Description

说 明 书
一种液晶显示器及其液晶显示器的亮度和对比度的调整方法 技术领域
本发明涉及一种液晶显示装置和调整方法, 尤其是指一种大尺寸液晶显示器及其亮度和 对比度调整均一的方法。
背景技术
目前, 电视多为液晶显示器, 液晶显示器结构包括液晶面板, 背光结构及驱动电路等。 驱动电路连接外部电源及信号, 其把外接电源转为液晶面板驱动的电压范围, 也同时把外部 信号转为液晶面板显示的可识别信号。
而现阶段液晶面板驱动模式多为单电路模式, 即液晶面板为方形, 有四条边, 其中两条 长边和两条短边, 整个四条边围成一个显示面板, 该显示面板由一个驱动接口驱动, 即一个 正极通过面板的线路回路, 一直到最后绕回到该驱动接口的负极, 正负极电路中的电流走遍 整个面板。
由于面板中的电路具有一定的阻抗, 电流经过整个面板后会逐渐衰减, 这样就会出现显 示方面的一半显示偏亮, 一半显示偏暗, 造成显示器左右 (或者上下) 半面的亮度色泽有差 异, 而造成显示效果不良。
发明内容
基于现有技术的不足, 本发明的主要目的在于提供一种各显示区域的亮度和对比度均一 的液晶显示器, 避免大尺寸显示器出现局部区域过亮或过暗显示, 颜色深浅不一的现象。
本发明提供了一种液晶显示器, 设有若干个显示区域、 信号输入模块、 信号输出模块和 信号比较模块, 其中, 所述信号输入模块与显示区域电连接, 以向其导入显示驱动信号, 信 号输出模块与显示区域电连接, 以分别将显示驱动信号在相应的显示区域导出输出信号源, 生成图像或影像, 信号比较模块与信号输出模块电连接, 以分别将各显示区域的输出信号源 进行比对, 在信号比较模块中将各显示区域的输出信号源进行比较, 获得信号比较结果, 当 两者不相同时, 根据两者差值对应调整显示驱动信号的电流大小, 以将经各显示区域的电流 值之间差值不断缩小后, 生成新的输出信号源输出至显示区域输出显示, 使得在各显示区域 中所显示图像或影像的亮度或对比度接近一致。
优选地, 所述各显示区域内分别设置可调电阻或可调电容, 通过改变电阻值或电容值的 大小来改变显示区域的输出电流值, 使得输出信号源中的亮度和对比度发生改变。 所述显示 区域分别设于不同的液晶面板中。 优选地, 在信号比较结果中包含有与输出信号源相对应的显示区域的标记信息。 本发明还提供了一种液晶显示器的亮度和对比度的调整方法, 其包括以下步骤: 步骤 1 ) 由信号输入模块向相对应的显示区域输入显示驱动信号;
步骤 2) 将显示驱动信号在相应的显示区域导出输出信号源, 生成图像或影像; 步骤 3 ) 在信号比较模块中将各显示区域的输出信号源进行比较, 获得信号比较结果, 当两者不相同时, 根据两者差值对应调整显示驱动信号的电流大小, 以将经各显示区域的电 流值之间差值不断缩小后, 生成新的输出信号源输出至显示区域输出显示, 使得在各显示区 域中所显示图像或影像的亮度或对比度接近一致。
其中, 在步骤 1 ) 设定显示区域包括 A半显示屏和 B半显示屏;
在步骤 2)显示驱动信号经 A半显示屏导出 A半显示屏第一帧数据, 经 B半显示屏导出 B半显示屏第一帧数据;
步骤 3 ) 在信号比较模块中, 将 A半显示屏第一帧数据和 B半显示屏第一帧数据进行比 较获得第一差值, 根据第一差值调整显示驱动信号的电流大小, 将输出显示亮度或对比度较 高的显示区域的电流减去第一差值, 使得经两半显示屏输出图像或影像中的亮度或对比度接 近一致。
在本发明的优选实施例中, 还进一步包括步骤 4) 根据 A半显示屏和 B半显示屏的第一 帧数据对显示驱动信号导入 A半显示屏和 B半显示屏进行修正后,再次分别由各半显示屏输 出显示, 导出 A半显示屏第二帧数据和 B半显示屏第二帧数据至信号比较模块进行比较获得 第二差值, 根据第二差值调整显示驱动信号的电流大小, 将输出显示亮度或对比度较高的显 示区域的电流减去第二差值,使得经两半显示屏输出图像或影像中的亮度或对比度接近一致。
其中, 所述 A半显示屏和 B半显示屏的输出信号源之间的差值递减, 第二差值小于第一 差值。
与现有技术相比, 本发明通过分屏化处理, 将大尺寸的显示屏分割呈若干半显示屏, 各 半显示屏无缝接合, 设有可调电阻或电容, 通过调整电阻或电容来改变电流, 将各半显示屏 的输出信号源进行比较, 根据两者前一帧的差值来调整对应半显示屏的电流, 通过增大电流, 将显示屏的亮度或对比度调高, 反之则降低。 通过上述自动反馈并调整的过程, 实现逐一调 整各个显示区域的对比度值和亮度值, 将各个独立的显示面板的亮度和对比度保持均一, 使 得上下面板、 左右面板之间亮度和对比度稳定、 统一的显示图像或影像。
附图说明
图 1为本发明一种液晶显示器的显示驱动信号调整的电路模块图;
图 2为本发明一种液晶显示器的信号源控制方法的流程图。 具体实施方式
为了实时对液晶显示器的各区域的光亮度进行调整, 驱动各区域保持均一的光亮度, 避 免产生局部区域的色差或亮度差现象, 提供了一种可对输入液晶显示器的显示驱动信号进行 调整的液晶显示器, 以及所述信号源的控制方法。
参照图 1所示, 本发明提供了一种液晶显示器, 设有若干个显示区域 1、 信号输入模块 2、 信号输出模块 3和信号比较模块 4, 其中, 所述信号输入模块 2与显示区域 1电连接, 以 向其导入显示驱动信号, 信号输出模块 3与显示区域 1 电连接, 以分别将显示驱动信号在相 应的显示区域 1导出输出信号源, 生成图像或影像, 信号比较模块 4与信号输出模块 3电连 接, 以分别将各显示区域 1的输出信号源进行比对, 在信号比较模块 4中将各显示区域 1的 输出信号源进行比较, 获得信号比较结果, 当两者不相同时, 根据两者差值对应调整显示驱 动信号的电流大小, 以将经各显示区域 1的电流值之间差值不断缩小后, 生成新的输出信号 源输出至显示区域输出显示, 使得在各显示区域中所显示图像或影像的亮度或对比度接近一 致。
其中, 所述各显示区域 1相互分离, 其为一块面板分割成几块各自独立的分面板, 所述 显示区域分别设于不同的液晶面板中。 各显示区域 1相互紧靠, 以保持画面的连贯性。 可根 据整体显示屏的大小对其进行分割, 通过对输入显示屏中的电流进行调整来修正各显示区域 所输出图像或影像的亮度或对比度。 在信号比较结果中包含有与输出信号源相对应的显示区 域的标记信息, 即信号比较结果中标示出待调整的显示区域的标记信息, 如升高第二行第三 列的显示区域的亮度值。 所述亮度参数以电压值表示其大小。
在本发明中, 所述各显示区域内分别设置可调电阻或可调电容, 通过改变电阻值或电容 值的大小来改变显示区域的输出电流值。 电阻增大, 则电流减小, 呈反比例关系; 电容增大, 则电流也增大, 呈正比例关系。 假设某一半显示屏所输出的图像或影像偏亮, 则对应减小该 半显示屏的电流, 导入的新显示驱动信号, 使得对应半显示屏所输出的图像或影像变暗, 各 半显示屏的亮度和对比度趋向一致, 避免出现显示面板中局部颜色过深、 局部颜色偏浅的现 象。
参照图 2所示, 本发明还提供了一种液晶显示器的亮度和对比度的调整方法, 其包括以 下步骤:
步骤 1 ) 由信号输入模块 2向相对应的显示区域 1输入显示驱动信号;
步骤 2) 将显示驱动信号在相应的显示区域 1导出输出信号源, 生成图像或影像; 步骤 3 ) 在信号比较模块 4中将各显示区域 1的输出信号源进行比较, 获得信号比较结 果, 当两者不相同时, 根据两者差值对应调整显示驱动信号的电流大小, 以将经各显示区域 1 的电流值之间差值不断缩小后, 生成新的输出信号源输出至显示区域 1输出显示, 使得在 各显示区域 1中所显示图像或影像的亮度或对比度接近一致。 若两者相同时, 则通过调整整 合型电路中暂存值的显示驱动信号的初始设定值(电流或电压值), 以达到相比较的显示区域 的亮度和对比度一致的效果。
其中, 在步骤 1 ) 设定显示区域包括 A半显示屏和 B半显示屏; 当然, 也可以根据整体 显示屏的尺寸设置, 并对各半显示屏进行标识, 以调整对应显示屏的亮度和对比度。
在步骤 2)显示驱动信号经 A半显示屏导出 A半显示屏第一帧数据, 经 B半显示屏导出 B半显示屏第一帧数据, 在第一帧数据中包含有图像或影像数据。
步骤 3 ) 在信号比较模块中, 将 A半显示屏第一帧数据和 B半显示屏第一帧数据进行比 较获得第一差值, 根据第一差值调整显示驱动信号的电流大小, 将输出显示亮度或对比度较 高的显示区域的电流减去第一差值, 使得经两半显示屏输出图像或影像中的亮度或对比度接 近一致。
在本发明的优选实施例中, 还进一步包括步骤 4) 根据 A半显示屏和 B半显示屏的第一 帧数据对显示驱动信号导入 A半显示屏和 B半显示屏进行修正后,再次分别由各半显示屏输 出显示, 导出 A半显示屏第二帧数据和 B半显示屏第二帧数据至信号比较模块进行比较获得 第二差值, 根据第二差值调整显示驱动信号的电流大小, 将输出显示亮度或对比度较高的显 示区域的电流减去第二差值,使得经两半显示屏输出图像或影像中的亮度或对比度接近一致。
其中, 所述 A半显示屏和 B半显示屏的输出信号源之间的差值递减, 第二差值小于第一 差值, 以此类推, 不断缩小两者亮度和对比度的差值, 直至差值为零时, 停止修正。
通过以下实施例具体说明各显示屏的显示驱动信号均一化调整的过程。
假设显示屏分为两半, 一半称为 A半显示屏, 另一半称为 B半显示屏。 现有的信号源均 为一帧一帧的画面信息传输, 假设显示驱动信号中的第一帧画面信息传到显示屏中时, 此时 显示屏中的 A半显示屏和 B半显示屏相当于一个整体显示, 但是由于两半显示屏的亮度、对 比度等参数不均等, 通过各自的信号输出模块向信号比较模块输出包含亮度、 对比度等参数 的输出信号源, 这时, 在信号比较模块中会呈现两组数据, 其中一组数据是 A半显示屏的亮 度、 对比度、 对比度等显示参数, 设为 A半显示屏的第一帧数据, 另一组数据是 B半显示屏 的亮度、 对比度、 对比度等显示参数, 设为 B半显示屏的第一帧数据。 当下个输出信号源导 出时, 信号比较模块中将呈现 A半显示屏的第二帧数据和 B半显示屏的第二帧数据。 这时, 信号比较模块将 A半显示屏第一帧数据和 B半显示屏第一帧数据进行比对, 产生一个差值 Cl, 对 A半显示屏第一帧数据 (或 B半显示屏第一帧数据) 进行下修 (或上调) Cl。 然后, 将 A半显示屏第一帧数据和 B半显示屏第二帧数据进行比对, 产生一个差值 C2, 对 A半显 示屏第一帧数据 (或 B半显示屏第一帧数据)进行下修 (或上调) C2, 不断调整修正, 直到 最后差值 C为 0时停止修正,最终使得 A半显示屏和 B半显示屏所输出的图像或影像的亮度 和对比度调整一致。
本发明通过分屏化处理, 将大尺寸的显示屏分割呈若干半显示屏, 各半显示屏无缝接合, 设有可调电阻或电容, 通过调整电阻或电容来改变电流, 将各半显示屏的输出信号源进行比 较, 根据两者前一帧的差值来调整对应半显示屏的电流, 通过增大电流, 将显示屏的亮度或 对比度调高, 反之则降低。 通过上述自动反馈并调整的过程, 实现逐一调整各个显示区域的 对比度值和亮度值, 将各个独立的显示面板的亮度和对比度保持均一, 使得上下面板、 左右 面板之间亮度和对比度稳定、 统一的显示图像或影像。

Claims

权 利 要 求 书
、 一种液晶显示器, 设有若干个显示区域、信号输入模块、 信号输出模块和信号比较模块, 其 中, 所述信号输入模块与显示区域电连接, 以向其导入显示驱动信号, 信号输出模块与显示 区域电连接, 以分别将显示驱动信号在相应的显示区域导出输出信号源, 生成图像或影像, 信号比较模块与信号输出模块电连接, 以分别将各显示区域的输出信号源进行比对, 其中, 所述各显示区域内分别设置可调电阻或可调电容, 通过改变电阻值或电容值的大小来改变显 示区域的输出电流值, 在信号比较模块中将各显示区域的输出信号源进行比较, 获得信号比 较结果, 当两者不相同时, 根据两者差值对应调整显示驱动信号的电流大小, 以将经各显示 区域的电流值之间差值不断缩小后, 生成新的输出信号源输出至显示区域输出显示, 使得在 各显示区域中所显示图像或影像的亮度或对比度接近一致。
、 根据权利要求 1所述的液晶显示器, 其中: 所述显示区域分别设于不同的液晶面板中。 、 根据权利要求 2所述的液晶显示器,其中:在信号比较结果中包含有与输出信号源相对应的 显示区域的标记信息。
、 一种液晶显示器的亮度和对比度的调整方法, 其中包括以下步骤:
步骤 1 ) 由信号输入模块向相对应的显示区域输入显示驱动信号, 设定显示区域包括 A半显 示屏和 B半显示屏;
步骤 2) 将显示驱动信号在相应的显示区域导出输出信号源, 生成图像或影像, 显示驱动信 号经 A半显示屏导出 A半显示屏第一帧数据, 经 B半显示屏导出 B半显示屏第一帧数据; 步骤 3 ) 在信号比较模块中将各显示区域的输出信号源进行比较, 获得信号比较结果, 当两 者不相同时,根据两者差值对应调整显示驱动信号的电流大小,将 A半显示屏第一帧数据和 B半显示屏第一帧数据进行比较获得第一差值,根据第一差值调整显示驱动信号的电流大小, 将输出显示亮度或对比度较高的显示区域的电流减去第一差值, 以将经各显示区域的电流值 之间差值不断缩小后, 生成新的输出信号源输出至显示区域输出显示, 使得在各显示区域中 所显示图像或影像的亮度或对比度接近一致。
、 根据权利要求 4所述的液晶显示器的亮度和对比度的调整方法, 其中进一步包括以下: 步骤 4) 根据 A半显示屏和 B半显示屏的第一帧数据对显示驱动信号导入 A半显示屏和 B 半显示屏进行修正后, 再次分别由各半显示屏输出显示, 导出 A半显示屏第二帧数据和 B 半显示屏第二帧数据至信号比较模块进行比较获得第二差值, 根据第二差值调整显示驱动信 号的电流大小, 将输出显示亮度或对比度较高的显示区域的电流减去第二差值, 使得经两半 显示屏输出图像或影像中的亮度或对比度接近一致。
、根据权利要求 5所述的液晶显示器的亮度和对比度的调整方法, 其中: 所述 A半显示屏和 B 半显示屏的输出信号源之间的差值递减, 第二差值小于第一差值。
7、 根据权利要求 5所述的液晶显示器的亮度和对比度的调整方法, 其中: 所述各显示区域内分 别设置可调电阻或可调电容, 通过改变电阻值或电容值的大小来改变显示区域的输出电流值。
8、一种液晶显示器, 设有若干个显示区域、信号输入模块、信号输出模块和信号比较模块, 其 中, 所述信号输入模块与显示区域电连接, 以向其导入显示驱动信号, 信号输出模块与显示 区域电连接, 以分别将显示驱动信号在相应的显示区域导出输出信号源, 生成图像或影像, 信号比较模块与信号输出模块电连接, 以分别将各显示区域的输出信号源进行比对, 其中: 在信号比较模块中将各显示区域的输出信号源进行比较, 获得信号比较结果, 当两者不相同 时, 根据两者差值对应调整显示驱动信号的电流大小, 以将经各显示区域的电流值之间差值 不断缩小后, 生成新的输出信号源输出至显示区域输出显示, 使得在各显示区域中所显示图 像或影像的亮度或对比度接近一致。
9、根据权利要求 8所述的液晶显示器,其中:所述各显示区域内分别设置可调电阻或可调电容, 通过改变电阻值或电容值的大小来改变显示区域的输出电流值,
10、 根据权利要求 8所述的液晶显示器, 其中: 所述显示区域分别设于不同的液晶面板中。
11、 根据权利要求 8所述的液晶显示器, 其中: 在信号比较结果中包含有与输出信号源相对应 的显示区域的标记信息。
12、 一种液晶显示器的亮度和对比度的调整方法, 其中包括以下步骤:
步骤 1 ) 由信号输入模块向相对应的显示区域输入显示驱动信号;
步骤 2) 将显示驱动信号在相应的显示区域导出输出信号源, 生成图像或影像;
步骤 3 ) 在信号比较模块中将各显示区域的输出信号源进行比较, 获得信号比较结果, 当两 者不相同时, 根据两者差值对应调整显示驱动信号的电流大小, 以将经各显示区域的电流值 之间差值不断缩小后, 生成新的输出信号源输出至显示区域输出显示, 使得在各显示区域中 所显示图像或影像的亮度或对比度接近一致。
13、 根据权利要求 12所述的液晶显示器的亮度和对比度的调整方法, 其中:
在步骤 1 ) 设定显示区域包括 A半显示屏和 B半显示屏;
在步骤 2) 显示驱动信号经 A半显示屏导出 A半显示屏第一帧数据, 经 B半显示屏导出 B 半显示屏第一帧数据。
14、 根据权利要求 13所述的液晶显示器的亮度和对比度的调整方法, 其中:
步骤 3 )在信号比较模块中, 将 A半显示屏第一帧数据和 B半显示屏第一帧数据进行比较获 得第一差值, 根据第一差值调整显示驱动信号的电流大小, 将输出显示亮度或对比度较高的 显示区域的电流减去第一差值, 使得经两半显示屏输出图像或影像中的亮度或对比度接近一 致。
、 根据权利要求 14所述的液晶显示器的亮度和对比度的调整方法, 其中进一步包括以下 步骤 4) 根据 A半显示屏和 B半显示屏的第一帧数据对显示驱动信号导入 A半显示屏和 B 半显示屏进行修正后, 再次分别由各半显示屏输出显示, 导出 A半显示屏第二帧数据和 B 半显示屏第二帧数据至信号比较模块进行比较获得第二差值, 根据第二差值调整显示驱动信 号的电流大小, 将输出显示亮度或对比度较高的显示区域的电流减去第二差值, 使得经两半 显示屏输出图像或影像中的亮度或对比度接近一致。
、根据权利要求 15所述的液晶显示器的亮度和对比度的调整方法, 其中: 所述 A半显示屏和 B半显示屏的输出信号源之间的差值递减, 第二差值小于第一差值。
、 根据权利要求 15所述的液晶显示器的亮度和对比度的调整方法, 其中: 所述各显示区域内 分别设置可调电阻或可调电容, 通过改变电阻值或电容值的大小来改变显示区域的输出电 流值。
PCT/CN2013/090606 2013-12-23 2013-12-26 一种液晶显示器及其液晶显示器的亮度和对比度的调整方法 WO2015096111A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US14/440,107 US20160293117A1 (en) 2013-12-23 2013-12-26 Liquid crystal displays and methods for adjusting brightness and contrast thereof

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310720117.2A CN103680469B (zh) 2013-12-23 2013-12-23 一种液晶显示器及其液晶显示器的亮度和对比度的调整方法
CN201310720117.2 2013-12-23

Publications (1)

Publication Number Publication Date
WO2015096111A1 true WO2015096111A1 (zh) 2015-07-02

Family

ID=50317829

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2013/090606 WO2015096111A1 (zh) 2013-12-23 2013-12-26 一种液晶显示器及其液晶显示器的亮度和对比度的调整方法

Country Status (3)

Country Link
US (1) US20160293117A1 (zh)
CN (1) CN103680469B (zh)
WO (1) WO2015096111A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105225646A (zh) * 2015-10-09 2016-01-06 惠科电子(深圳)有限公司 一种调整显示信号的显示参数的方法及系统

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112581903B (zh) * 2019-09-30 2022-05-06 华为终端有限公司 一种像素补偿方法和电子设备
CN112558907B (zh) * 2020-12-10 2021-08-10 深圳市普汇智联科技有限公司 基于摄像机的拼接墙颜色均匀性和一致性控制方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101312001A (zh) * 2007-05-22 2008-11-26 中华映管股份有限公司 背光装置及其亮度控制电路的控制方法
CN101350176A (zh) * 2007-07-20 2009-01-21 三星电子株式会社 用于显示装置的光源模块以及具有该光源模块的显示装置
CN101452677A (zh) * 2007-11-30 2009-06-10 广达电脑股份有限公司 驱动装置、背光模块及驱动方法
JP2010130810A (ja) * 2008-11-28 2010-06-10 Mitsumi Electric Co Ltd Led駆動装置
US20120075356A1 (en) * 2010-09-23 2012-03-29 Chia-Chun Liu Integrated backlight driving chip and led backlight device
CN102622960A (zh) * 2012-03-16 2012-08-01 中国科学院西安光学精密机械研究所 Led显示装置的亮度调节装置、led显示系统及其制作方法
CN102637412A (zh) * 2012-04-28 2012-08-15 深圳市华星光电技术有限公司 一种led背光驱动电路、液晶显示装置和一种驱动方法
CN103390389A (zh) * 2012-05-09 2013-11-13 冠捷投资有限公司 液晶显示装置、面板驱动装置及控制电路

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2335562B (en) * 1996-12-30 1999-11-03 Lg Electronics Inc Video input level control circuit in a video appliance
JP4143323B2 (ja) * 2002-04-15 2008-09-03 Nec液晶テクノロジー株式会社 液晶表示装置
TWI265469B (en) * 2005-02-18 2006-11-01 Asmedia Technology Inc An apparatus and method for compensating regional uniformity of a display panel
KR20070016873A (ko) * 2005-08-05 2007-02-08 삼성전자주식회사 백라이트 유닛, 이를 포함하는 디스플레이장치 및 그제어방법
JP4589368B2 (ja) * 2007-05-31 2010-12-01 株式会社 日立ディスプレイズ 液晶表示装置
CN201315148Y (zh) * 2008-11-14 2009-09-23 康佳集团股份有限公司 用于液晶电视的led背光源区域发光控制装置
CN101937653A (zh) * 2010-09-27 2011-01-05 彩虹集团公司 一种分区亮度一致性调整方法
CN102456317A (zh) * 2010-10-19 2012-05-16 昆达电脑科技(昆山)有限公司 可调节部分背光的显示屏
WO2012157651A1 (ja) * 2011-05-18 2012-11-22 シャープ株式会社 液晶表示装置、液晶表示装置の駆動方法、及びテレビジョン受像機
CN102915172B (zh) * 2011-08-03 2017-02-08 中兴通讯股份有限公司 一种管理显示屏的方法及装置
US9772704B2 (en) * 2013-08-15 2017-09-26 Apple Inc. Display/touch temporal separation

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101312001A (zh) * 2007-05-22 2008-11-26 中华映管股份有限公司 背光装置及其亮度控制电路的控制方法
CN101350176A (zh) * 2007-07-20 2009-01-21 三星电子株式会社 用于显示装置的光源模块以及具有该光源模块的显示装置
CN101452677A (zh) * 2007-11-30 2009-06-10 广达电脑股份有限公司 驱动装置、背光模块及驱动方法
JP2010130810A (ja) * 2008-11-28 2010-06-10 Mitsumi Electric Co Ltd Led駆動装置
US20120075356A1 (en) * 2010-09-23 2012-03-29 Chia-Chun Liu Integrated backlight driving chip and led backlight device
CN102622960A (zh) * 2012-03-16 2012-08-01 中国科学院西安光学精密机械研究所 Led显示装置的亮度调节装置、led显示系统及其制作方法
CN102637412A (zh) * 2012-04-28 2012-08-15 深圳市华星光电技术有限公司 一种led背光驱动电路、液晶显示装置和一种驱动方法
CN103390389A (zh) * 2012-05-09 2013-11-13 冠捷投资有限公司 液晶显示装置、面板驱动装置及控制电路

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105225646A (zh) * 2015-10-09 2016-01-06 惠科电子(深圳)有限公司 一种调整显示信号的显示参数的方法及系统

Also Published As

Publication number Publication date
CN103680469A (zh) 2014-03-26
CN103680469B (zh) 2015-12-30
US20160293117A1 (en) 2016-10-06

Similar Documents

Publication Publication Date Title
US10446095B2 (en) Image processing method of display device, image processing structure, and display device
US9208735B2 (en) Voltage adjustment method and apparatus of liquid crystal display panel
CN107481689B (zh) 图像处理装置及其处理方法
WO2020029719A1 (zh) 一种双层液晶屏、背光亮度控制方法、装置及电子设备
US8525752B2 (en) System and method for automatically adjusting electronic display settings
WO2017121140A1 (zh) 液晶显示屏的显示控制方法和装置
US10629139B2 (en) Backlight module and control method of display device
TWI529693B (zh) 顯示裝置及其色彩轉換方法
JP2021504758A (ja) 画像における高周波成分を検出する方法及び装置
CN103310740B (zh) 显示装置的影像处理方法及其显示装置
CN108615511A (zh) 显示方法及显示装置
US20110148863A1 (en) 3d display driving method and 3d display apparatus using the same
CN110992913A (zh) 一种液晶显示屏颜色补充校正方法
US20110012933A1 (en) Display device with automatic brightness adjustment and method for operating the same
US20210225318A1 (en) Method for eliminating residual image in liquid crystal display panel
WO2015096111A1 (zh) 一种液晶显示器及其液晶显示器的亮度和对比度的调整方法
WO2017063377A1 (zh) 显示处理方法、显示处理装置和显示装置
CN107657930A (zh) 改善lcd显示器色偏的方法及lcd显示器
JP2001231053A (ja) 画像表示装置の補正データ作成方法
Liu Revolution of the TFT LCD technology
TW202215395A (zh) 顯示裝置及影像校正方法
CN105405430A (zh) 显示面板、显示器及提高四基色纯色画面显示亮度的方法
WO2016165164A1 (zh) 一种多电压产生装置及液晶显示器
JPS63261327A (ja) カラ−液晶表示装置
CN102682723A (zh) 显示器的驱动装置及驱动方法

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 14440107

Country of ref document: US

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13900576

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13900576

Country of ref document: EP

Kind code of ref document: A1