WO2017210982A1 - 液晶显示器及改善液晶显示器的大视角色偏的方法 - Google Patents

液晶显示器及改善液晶显示器的大视角色偏的方法 Download PDF

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Publication number
WO2017210982A1
WO2017210982A1 PCT/CN2016/093002 CN2016093002W WO2017210982A1 WO 2017210982 A1 WO2017210982 A1 WO 2017210982A1 CN 2016093002 W CN2016093002 W CN 2016093002W WO 2017210982 A1 WO2017210982 A1 WO 2017210982A1
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Prior art keywords
frame image
displayed
value corresponding
gamma value
liquid crystal
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English (en)
French (fr)
Inventor
曾德康
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TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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Priority to US15/300,419 priority Critical patent/US10593250B2/en
Publication of WO2017210982A1 publication Critical patent/WO2017210982A1/zh
Anticipated expiration legal-status Critical
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    • 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
    • G09G3/3607—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 for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
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    • 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
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    • 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
    • G09G3/3611—Control of matrices with row and column drivers
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—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
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    • 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
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3685—Details of drivers for data electrodes
    • G09G3/3688—Details of drivers for data electrodes suitable for active matrices only
    • 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
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3696—Generation of voltages supplied to electrode drivers
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    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0264—Details of driving circuits
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    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
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    • G09G2310/08—Details of timing specific for flat panels, other than clock recovery
    • 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
    • G09G2320/0242—Compensation of deficiencies in the appearance of colours
    • 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
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/028—Improving the quality of display appearance by changing the viewing angle properties, e.g. widening the viewing angle, adapting the viewing angle to the view direction
    • 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

Definitions

  • the present invention generally relates to the field of liquid crystal display technologies, and more particularly to a liquid crystal display and method for improving the bias of a large-view character.
  • liquid crystal displays LCDs
  • CTR cathode ray tube
  • the liquid crystal display has an inherent defect that when the viewing angle becomes large, the optical brightness curve of each pixel cannot conform to a gamma value of 2.2, thereby causing a color shift phenomenon. The larger the viewing angle, the more obvious the color drift phenomenon.
  • Figure 1 shows the optical brightness curves at different viewing angles. It can be seen that the gamma value of the optical brightness curve of the pixel is 2.2 at the viewing angle of 0°, and the optical brightness curve of the pixel at the viewing angle of 30° and the viewing angle of 60°. The gamma value is getting farther away from 2.2.
  • each pixel in the display matrix of the liquid crystal panel into two regions, that is, a master sub-pixel region (master area) and a sub-sub-pixel region (slave). Area), by providing different gray scale voltages to the two regions at the same time, the liquid crystal deflection angles of the two regions are different, and the gamma values of the optical brightness curves are different.
  • the viewing angle becomes larger, although the gamma value of the optical brightness curve of the master area and the slave area changes, the neutralization of the two causes the gamma value of the optical brightness curve of the entire pixel to be close to 2.2, thereby improving the large View the color cast problem from the perspective.
  • An exemplary embodiment of the present invention is to provide a liquid crystal display and a method for improving the dominant role of the liquid crystal display, thereby overcoming the existing method of reducing the bias of the large-view character, increasing the product cost and reducing the transmittance of the liquid crystal panel. The problem.
  • a liquid crystal display comprising: a timing controller for transmitting data including a gamma value corresponding to a frame image to be displayed to a data source driving integrated circuit; data source driving integration a circuit for generating a gray for providing each pixel according to a gamma value corresponding to the frame image to be displayed and a grayscale value corresponding to each pixel of the liquid crystal panel in the frame image to be displayed a step voltage; a liquid crystal panel configured to display the frame image to be displayed based on a gray scale voltage supplied to each of the pixels, wherein the frame image to be displayed corresponds to a gamma value different from an adjacent frame The gamma value corresponding to the image.
  • the gamma value corresponding to the frame image to be displayed is different from the gamma value corresponding to the previous frame image of the frame image to be displayed and the next frame image of the frame image to be displayed.
  • a gamma value, and the gamma value corresponding to the previous frame image of the frame image to be displayed and the gamma value corresponding to the next frame image of the frame image to be displayed are the same.
  • the data source driving integrated circuit includes: a receiver, configured to receive, from the timing controller, data including a gamma value corresponding to the frame image to be displayed and parse the gamma value corresponding to the frame image to be displayed; a gamma module, generating ash for providing each pixel according to a gamma value corresponding to the frame image to be displayed and a grayscale value corresponding to each pixel of the liquid crystal panel in the frame image to be displayed a step voltage; a digital to analog converter that converts the generated gray scale voltage supplied to each of the pixels into an analog voltage.
  • the timing controller transmits the data including the gamma value corresponding to the frame image to be displayed to the data source driving integrated circuit by using a signal transmission protocol.
  • the signal communication protocol is a P2P transmission protocol.
  • a method of improving a large-view character bias of a liquid crystal display comprising: (A) a timing controller transmitting data including a gamma value corresponding to a frame image to be displayed to a data source driving integrated circuit; (B) the data source driving integrated circuit generates, according to the gamma value corresponding to the frame image to be displayed and the grayscale value corresponding to each pixel of the liquid crystal panel in the frame image to be displayed a grayscale voltage supplied to each of the pixels; (C) a liquid crystal panel displays the frame image to be displayed based on a grayscale voltage supplied to each of the pixels, wherein the frame image to be displayed corresponds to The gamma value is different from the gamma value corresponding to the adjacent frame image.
  • the gamma value corresponding to the frame image to be displayed is different from the gamma value corresponding to the previous frame image of the frame image to be displayed and the next frame image of the frame image to be displayed.
  • Gamma value Moreover, the gamma value corresponding to the previous frame image of the frame image to be displayed and the gamma value corresponding to the next frame image of the frame image to be displayed are the same.
  • the step (B) includes: (b1) receiving, by the receiver, data including a gamma value corresponding to the frame image to be displayed from the timing controller and parsing a gamma value corresponding to the frame image to be displayed;
  • the gamma module generates, according to the gamma value corresponding to the frame image to be displayed and the grayscale value corresponding to each pixel of the liquid crystal panel in the frame image to be displayed, for generating for each pixel Gray scale voltage;
  • a digital to analog converter converts the generated gray scale voltage supplied to each of the pixels into an analog voltage.
  • the timing controller transmits the data including the gamma value corresponding to the frame image to be displayed to the data source driving integrated circuit by using a signal transmission protocol.
  • the signal communication protocol is a P2P transmission protocol.
  • the liquid crystal display according to the exemplary embodiment of the present invention and the method for improving the large-view character bias of the liquid crystal display can reduce the color shift of the large viewing angle without increasing the product cost and reducing the transmittance of the liquid crystal panel, thereby increasing The viewing angle of a large liquid crystal display.
  • Figure 1 shows an optical brightness curve at different viewing angles
  • FIG. 2 is a block diagram showing the structure of a liquid crystal display according to an exemplary embodiment of the present invention.
  • FIG. 3 is a block diagram showing the structure of a data source driving integrated circuit according to an exemplary embodiment of the present invention
  • FIG. 4 illustrates a flow chart of a method of improving a large-view character bias of a liquid crystal display according to an exemplary embodiment of the present invention
  • FIG. 5 illustrates a flow chart of a method of generating a gray scale voltage, according to an exemplary embodiment of the present invention.
  • FIG. 2 illustrates a structural block diagram of a liquid crystal display according to an exemplary embodiment of the present invention.
  • a liquid crystal display according to an exemplary embodiment of the present invention includes a timing controller 10, a data source driving integrated circuit 20, and a liquid crystal panel 30.
  • the liquid crystal display according to an exemplary embodiment of the present invention may have other functions necessary for the liquid crystal display to perform its own functions in addition to the timing controller 10, the data source driving integrated circuit 20, and the liquid crystal panel 30.
  • the device is not limited in this regard.
  • a timing controller 10 (TCON) is used to transmit data including a gamma value corresponding to a frame image to be displayed to the data source driving integrated circuit 20.
  • the timing controller 10 may transmit data including a gamma value corresponding to a frame image to be displayed to the data source driving integrated circuit 20 using a signal transmission protocol.
  • the signal communication protocol may be a P2P transmission protocol.
  • the P2P transmission protocol may be a Samsung-led USI-T protocol, an LG-led ISP protocol, a Novatek-led PHI protocol, and the like.
  • the data source driving integrated circuit 20 (Source IC) is configured to generate, according to the gamma value corresponding to the frame image to be displayed and the grayscale value corresponding to each pixel of the liquid crystal panel 30 in the frame image to be displayed. And a grayscale voltage supplied to each of the pixels, wherein the gamma value corresponding to the frame image to be displayed is different from the gamma value corresponding to the adjacent frame image. That is, the gamma value corresponding to the frame image to be displayed is different from the gamma value corresponding to the image of the previous frame and the gamma value corresponding to the image of the next frame.
  • the gamma value corresponding to the frame image to be displayed is different from the gamma value corresponding to the previous frame image of the frame image to be displayed and the gamma corresponding to the next frame image of the frame image to be displayed.
  • the horse value, and the gamma value corresponding to the previous frame image of the frame image to be displayed and the gamma value corresponding to the next frame image of the frame image to be displayed are the same.
  • the gamma values corresponding to the odd frame images are the same (for example, the first gamma value), and the gamma values corresponding to the even frame images are the same (for example, the second gamma value) , but the first gamma value and the second gamma value are different.
  • the first gamma value and the second gamma value may be set according to actual conditions, for example, the first gamma value and the second gamma value may be set according to actual measurement and debugging conditions, for example, the first gamma value It can be 1.8 and the second gamma value can be 2.3.
  • the liquid crystal panel 30 is for displaying the frame image to be displayed based on a gray scale voltage supplied to each of the pixels.
  • FIG. 3 illustrates a structural block diagram of a data source driving integrated circuit according to an exemplary embodiment of the present invention.
  • a data source driving integrated circuit 20 may include a receiver 201, a gamma module 202, and a digital to analog converter 203.
  • the data source driving integrated circuit 20 may have its data source driving integration as a liquid crystal display in addition to the receiver 201, the gamma module 202, and the digital to analog converter 203.
  • Other devices necessary for the circuit to perform its own functions are not limited by the present invention.
  • the receiver 201 is configured to receive data including a gamma value corresponding to the frame image to be displayed from the timing controller and parse the gamma value corresponding to the frame image to be displayed from the received data.
  • the gamma module 202 generates, according to the gamma value corresponding to the frame image to be displayed and the grayscale value corresponding to each pixel of the liquid crystal panel 30 in the frame image to be displayed, for each pixel to be provided. Gray scale voltage.
  • a digital to analog converter 203 converts the generated gray scale voltages supplied to each of the pixels into analog voltages.
  • the timing controller 10 transmits a gamma value corresponding to the frame image to the data source driving integrated circuit 20 when a frame image is to be displayed, thereby data source driving integration
  • the circuit 20 can provide a corresponding gray scale voltage to each pixel in the liquid crystal panel 30 according to the gamma value corresponding to the frame image to display the one frame image.
  • the timing controller 10 transmits the gamma value corresponding to the next frame image to the data source driving integrated circuit 20, so that the data source drives the integrated circuit 20
  • a corresponding gray scale voltage may be supplied to each pixel in the liquid crystal panel 30 according to a gamma value corresponding to the next frame image to display the next frame image. Since the gamma values corresponding to the one frame image and the next frame image are different, the liquid crystal panel 30 displays the one frame image and the next frame image at the same position of the liquid crystal panel 30.
  • optical brightness curves of the pixels are different, and the optical brightness curves of the gamma value close to 2.2 are neutralized by the two optical brightness curves by the human eye visual integration, thereby reducing the large-view character bias, and the liquid crystal panel 30 is The higher the refresh rate, the more obvious the effect of reducing the bias of the big view.
  • the above-described devices can perform other functions that they should perform as devices in the liquid crystal display in addition to the above functions.
  • the timing controller 10 in addition to transmitting data including a gamma value corresponding to a frame image to be displayed to the data source driving integrated circuit 20, The grayscale value corresponding to each pixel of the liquid crystal panel 30 in the frame image to be displayed is transmitted to the data source driving integrated circuit 20.
  • the liquid crystal display according to an exemplary embodiment of the present invention can utilize an existing device in a liquid crystal display and a P2P communication architecture without adding additional device and technical support, and is more convenient to implement without increasing cost.
  • FIG. 4 illustrates a flow chart of a method of improving a large-view character bias of a liquid crystal display, according to an exemplary embodiment of the present invention.
  • step S10 the timing controller transmits data including a gamma value corresponding to the frame image to be displayed to the data source driving integrated circuit.
  • the timing controller may transmit data including a gamma value corresponding to the frame image to be displayed to the data source driving integrated circuit using a signal transmission protocol.
  • the signal communication protocol may be a P2P transmission protocol.
  • the P2P transmission protocol may be a Samsung-led USI-T protocol, an LG-led ISP protocol, a Novatek-led PHI protocol, and the like.
  • step S20 the data source driving integrated circuit generates, according to the gamma value corresponding to the frame image to be displayed and the grayscale value corresponding to each pixel of the liquid crystal panel in the frame image to be displayed, for generating the a gray scale voltage of each pixel, wherein the gamma value corresponding to the frame image to be displayed is different from the gamma value corresponding to the adjacent frame image. That is, the gamma value corresponding to the frame image to be displayed is different from the gamma value corresponding to the image of the previous frame and the gamma value corresponding to the image of the next frame.
  • the gamma value corresponding to the frame image to be displayed is different from the gamma value corresponding to the previous frame image of the frame image to be displayed and the gamma corresponding to the next frame image of the frame image to be displayed.
  • the horse value, and the gamma value corresponding to the previous frame image of the frame image to be displayed and the gamma value corresponding to the next frame image of the frame image to be displayed are the same.
  • the gamma values corresponding to the odd frame images are the same (for example, the first gamma value), and the gamma values corresponding to the even frame images are the same (for example, the second gamma value) , but the first gamma value and the second gamma value are different.
  • the first gamma value and the second gamma value may be set according to actual conditions, for example, the first gamma value and the second gamma value may be set according to actual measurement and debugging conditions, for example, the first gamma value It can be 1.8 and the second gamma value can be 2.3.
  • step S30 the liquid crystal panel displays the frame image to be displayed based on the gray scale voltage supplied to each of the pixels.
  • FIG. 5 illustrates a flow chart of a method of generating a gray scale voltage, according to an exemplary embodiment of the present invention.
  • step S201 the receiver receives data including a gamma value corresponding to the frame image to be displayed from the timing controller and parses the gamma value corresponding to the frame image to be displayed.
  • step S202 the gamma module generates, according to the gamma value corresponding to the frame image to be displayed and the grayscale value corresponding to each pixel of the liquid crystal panel in the frame image to be displayed, for providing to each of the The grayscale voltage of the pixel.
  • step S203 the digital-to-analog converter converts the generated gray scale voltage supplied to each of the pixels into an analog voltage.
  • a timing controller transmits a gamma value corresponding to the frame image to a data source driving integrated circuit when a frame image is to be displayed. Therefore, the data source driving integrated circuit can provide a corresponding gray scale voltage to each pixel in the liquid crystal panel according to the gamma value corresponding to the frame image to display the one frame image.
  • the timing controller sends the gamma value corresponding to the next frame image to the data source driving integrated circuit, so that the data source driving integrated circuit can
  • the gamma value corresponding to the next frame image provides a corresponding gray scale voltage to each pixel in the liquid crystal panel to display the next frame image.
  • the gamma values corresponding to the one frame image and the next frame image are different, when the liquid crystal panel displays the one frame image and the next frame image, the pixel at the same position of the liquid crystal panel The optical brightness curve is different, and the optical brightness curve of the gamma value close to 2.2 is neutralized by the human visual integration, thereby reducing the bias of the large-view character, and the refresh frequency of the liquid crystal panel is increased. High, the effect of reducing the bias of the big view is more obvious.
  • the method for improving the dominant role of the liquid crystal display according to an exemplary embodiment of the present invention can utilize the existing devices in the liquid crystal display and the P2P communication architecture without adding additional devices and technical support, without increasing the cost. It's more convenient.
  • the liquid crystal display according to the exemplary embodiment of the present invention and the method for improving the large-view character bias of the liquid crystal display can reduce the color shift of the large viewing angle without increasing the product cost and reducing the transmittance of the liquid crystal panel, thereby increasing The viewing angle of a large liquid crystal display.

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  • 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 (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

提供一种液晶显示器及改善液晶显示器的大视角色偏的方法。液晶显示器包括：时序控制器（10），用于将包括待显示的帧图像对应的伽马值的数据发送到数据源驱动集成电路（20）；数据源驱动集成电路（20），用于根据待显示的帧图像对应的伽马值和待显示的帧图像中液晶面板的每个像素对应的灰阶值，生成用于提供给所述每个像素的灰阶电压；液晶面板（30），基于提供给每个像素的灰阶电压来显示待显示的帧图像，其中，待显示的帧图像对应的伽马值不同于相邻的帧图像对应的伽马值。根据液晶显示器及改善液晶显示器的大视角色偏的方法，能够在不提高产品成本、不降低液晶面板的穿透率的情况下，降低大视角的色偏，从而增大液晶显示器的观看视角。

Description

液晶显示器及改善液晶显示器的大视角色偏的方法 技术领域
本发明总体说来涉及液晶显示器技术领域，更具体地讲，涉及一种改善大视角色偏的液晶显示器及方法。
背景技术
近年来，液晶显示器(LCD)以其体积小、重量轻、显示质量高等优点逐渐替代了以往的阴极射线显像管(CRT)显示器。然而，液晶显示器存在一个固有的缺陷，即当观看视角(view angle)变大时，每个像素的光学亮度曲线无法符合伽马(gamma)值为2.2，从而出现颜色漂移(color shift)的现象，观看视角越大，颜色漂移现象就越明显。图1示出在不同视角下的光学亮度曲线，可以看出，在0°视角时，像素的光学亮度曲线的gamma值为2.2，而在30°视角及60°视角时像素的光学亮度曲线的gamma值越来越远离2.2。
针对大视角色偏问题，目前一般通过下述方式解决：将液晶面板的显示矩阵(array)中的每个像素分为2个区，即主子像素区域(master area)和次子像素区域(slave area)，通过在同一时刻对2个区提供不同的灰阶电压，使得2个区的液晶偏转角度不一样，从而光学亮度曲线的gamma值不同。当观看视角变大时，虽然会导致master区和slave区的光学亮度曲线的gamma值发生变化，但两者中和后会使得整个像素的光学亮度曲线的gamma值接近于2.2，从而改善大的观看视角下的色偏问题。虽然通过上述方式改善了色偏问题，但需要额外增加扫描线(scan line)、数据线(data line)和薄膜晶体管(TFT)，一方面产品成本增高，另一方面使得液晶面板的开口率变小，降低了液晶面板的穿透率。
发明内容
本发明的示例性实施例在于提供一种液晶显示器及改善液晶显示器的大视角色偏的方法，以克服现有的降低大视角色偏的方式提高了产品成本、降低了液晶面板的穿透率的问题。
根据本发明的示例性实施例，提供一种液晶显示器，其包括：时序控制器，用于将包括待显示的帧图像对应的伽马值的数据发送到数据源驱动集成电路；数据源驱动集成电路，用于根据所述待显示的帧图像对应的伽马值和所述待显示的帧图像中液晶面板的每个像素对应的灰阶值，生成用于提供给所述每个像素的灰阶电压；液晶面板，用于基于提供给所述每个像素的灰阶电压来显示所述待显示的帧图像，其中，所述待显示的帧图像对应的伽马值不同于相邻的帧图像对应的伽马值。
可选地，所述待显示的帧图像对应的伽马值不同于所述待显示的帧图像的上一帧图像对应的伽马值和所述待显示的帧图像的下一帧图像对应的伽马值，并且，所述待显示的帧图像的上一帧图像对应的伽马值和所述待显示的帧图像的下一帧图像对应的伽马值相同。
可选地，数据源驱动集成电路包括：接收器，用于从时序控制器接收包括待显示的帧图像对应的伽马值的数据并解析出所述待显示的帧图像对应的伽马值；伽马模块，根据所述待显示的帧图像对应的伽马值和所述待显示的帧图像中液晶面板的每个像素对应的灰阶值，生成用于提供给所述每个像素的灰阶电压；数模转换器，将生成的用于提供给所述每个像素的灰阶电压转换成模拟电压。
可选地，时序控制器利用信号传输协议将包括待显示的帧图像对应的伽马值的数据发送到数据源驱动集成电路。
可选地，所述信号通信协议是P2P传输协议。
根据本发明的另一示例性实施例，提供一种改善液晶显示器的大视角色偏的方法，其包括：(A)时序控制器将包括待显示的帧图像对应的伽马值的数据发送到数据源驱动集成电路；(B)数据源驱动集成电路根据所述待显示的帧图像对应的伽马值和所述待显示的帧图像中液晶面板的每个像素对应的灰阶值，生成用于提供给所述每个像素的灰阶电压；(C)液晶面板基于提供给所述每个像素的灰阶电压来显示所述待显示的帧图像，其中，所述待显示的帧图像对应的伽马值不同于相邻的帧图像对应的伽马值。
可选地，所述待显示的帧图像对应的伽马值不同于所述待显示的帧图像的上一帧图像对应的伽马值和所述待显示的帧图像的下一帧图像对应的伽马值， 并且，所述待显示的帧图像的上一帧图像对应的伽马值和所述待显示的帧图像的下一帧图像对应的伽马值相同。
可选地，步骤(B)包括：(b1)接收器从时序控制器接收包括待显示的帧图像对应的伽马值的数据并解析出所述待显示的帧图像对应的伽马值；(b2)伽马模块根据所述待显示的帧图像对应的伽马值和所述待显示的帧图像中液晶面板的每个像素对应的灰阶值，生成用于提供给所述每个像素的灰阶电压；(b3)数模转换器将生成的用于提供给所述每个像素的灰阶电压转换成模拟电压。
可选地，时序控制器利用信号传输协议将包括待显示的帧图像对应的伽马值的数据发送到数据源驱动集成电路。
可选地，所述信号通信协议是P2P传输协议。
根据本发明示例性实施例的液晶显示器及改善液晶显示器的大视角色偏的方法，能够在不提高产品成本、不降低液晶面板的穿透率的情况下，降低大视角的色偏，从而增大液晶显示器的观看视角。
将在接下来的描述中部分阐述本发明总体构思另外的方面和/或优点，还有一部分通过描述将是清楚的，或者可以经过本发明总体构思的实施而得知。
附图说明
图1示出在不同视角下的光学亮度曲线；
图2示出根据本发明示例性实施例的液晶显示器的结构框图；
图3示出根据本发明示例性实施例的数据源驱动集成电路的结构框图；
图4示出根据本发明示例性实施例的改善液晶显示器的大视角色偏的方法的流程图；
图5示出根据本发明示例性实施例的生成灰阶电压的方法的流程图。
具体实施方式
现将详细参照本发明的实施例，所述实施例的示例在附图中示出，其中，相同的标号始终指的是相同的部件。以下将通过参照附图来说明所述实施例，以便解释本发明。
图2示出根据本发明示例性实施例的液晶显示器的结构框图。如图2所示，根据本发明示例性实施例的液晶显示器包括：时序控制器10、数据源驱动集成电路20和液晶面板30。
这里，应该理解，根据本发明示例性实施例的液晶显示器除具有时序控制器10、数据源驱动集成电路20和液晶面板30之外，还可具有其作为液晶显示器执行其自身功能所必须的其他器件，本发明对此不作限制。
具体说来，时序控制器10(Timing controller,TCON)用于将包括待显示的帧图像对应的伽马值的数据发送到数据源驱动集成电路20。
作为示例，时序控制器10可利用信号传输协议将包括待显示的帧图像对应的伽马值的数据发送到数据源驱动集成电路20。优选地，所述信号通信协议可以是P2P传输协议。例如，所述P2P传输协议可以是三星主导的USI-T协议、LG主导的ISP协议、Novatek主导的PHI协议等。
数据源驱动集成电路20(Source IC)用于根据所述待显示的帧图像对应的伽马值和所述待显示的帧图像中液晶面板30的每个像素对应的灰阶值，生成用于提供给所述每个像素的灰阶电压，其中，所述待显示的帧图像对应的伽马值不同于相邻的帧图像对应的伽马值。即，所述待显示的帧图像对应的伽马值与其上一帧图像所对应的伽马值和其下一帧图像所对应的伽马值均不同。
优选地，所述待显示的帧图像对应的伽马值不同于所述待显示的帧图像的上一帧图像对应的伽马值和所述待显示的帧图像的下一帧图像对应的伽马值，并且，所述待显示的帧图像的上一帧图像对应的伽马值和所述待显示的帧图像的下一帧图像对应的伽马值相同。具体说来，从第一帧图像开始，奇数帧图像对应的伽马值相同(例如，为第一伽马值)，偶数帧图像对应的伽马值相同(例如，为第二伽马值)，但第一伽马值和第二伽马值不同。这里，第一伽马值和第二伽马值可根据实际情况进行设置，例如，可根据实际测量和调试情况来设置第一伽马值和第二伽马值，例如，第一伽马值可为1.8、第二伽马值可为2.3。
液晶面板30用于基于提供给所述每个像素的灰阶电压来显示所述待显示的帧图像。
图3示出根据本发明示例性实施例的数据源驱动集成电路的结构框图。如 图3所示，根据本发明示例性实施例的数据源驱动集成电路20可包括：接收器201、伽马模块202和数模转换器203。
这里，应该理解，根据本发明示例性实施例的数据源驱动集成电路20除具有接收器201、伽马模块202和数模转换器203之外，还可具有其作为液晶显示器的数据源驱动集成电路执行其自身功能所必须的其他器件，本发明对此不作限制。
具体说来，接收器201用于从时序控制器接收包括待显示的帧图像对应的伽马值的数据并从接收到的数据中解析出所述待显示的帧图像对应的伽马值。
伽马模块202根据所述待显示的帧图像对应的伽马值和所述待显示的帧图像中液晶面板30的每个像素对应的灰阶值，生成用于提供给所述每个像素的灰阶电压。
数模转换器203(DAC)将生成的用于提供给所述每个像素的灰阶电压转换成模拟电压。
在根据本发明的示例性实施例的液晶显示器中，时序控制器10在即将显示一帧图像时，将与该帧图像对应的伽马值发送到数据源驱动集成电路20，从而数据源驱动集成电路20可根据该帧图像对应的伽马值来向液晶面板30中的各个像素提供相应的灰阶电压以显示所述一帧图像。相应地，时序控制器10在即将显示所述一帧图像的下一帧图像时，将与该下一帧图像对应的伽马值发送到数据源驱动集成电路20，从而数据源驱动集成电路20可根据该下一帧图像对应的伽马值来向液晶面板30中的各个像素提供相应的灰阶电压以显示所述下一帧图像。由于所述一帧图像和所述下一帧图像所对应的伽马值不同，因此，液晶面板30在显示所述一帧图像和所述下一帧图像时，液晶面板30的同一位置处的像素的光学亮度曲线不同，而通过人眼视觉积分，正好将这两条光学亮度曲线中和出一条伽马值接近2.2的光学亮度曲线，从而降低了大视角色偏，并且，液晶面板30的刷新频率越高，降低大视角色偏的效果越明显。
此外，应该理解，上述器件在执行上述功能之外，还可执行其作为液晶显示器中的器件应该执行的其他功能。以时序控制器10为例，其除了将包括待显示的帧图像对应的伽马值的数据发送到数据源驱动集成电路20之外，还可 将所述待显示的帧图像中液晶面板30的每个像素对应的灰阶值发送到数据源驱动集成电路20。
根据本发明示例性实施例的液晶显示器，能够利用液晶显示器中现有的器件及P2P通信架构，无需增加额外的器件和技术支持，在不增加成本的同时，实现上更便捷。
图4示出根据本发明示例性实施例的改善液晶显示器的大视角色偏的方法的流程图。
如图4所示，在步骤S10，时序控制器将包括待显示的帧图像对应的伽马值的数据发送到数据源驱动集成电路。
作为示例，时序控制器可利用信号传输协议将包括待显示的帧图像对应的伽马值的数据发送到数据源驱动集成电路。优选地，所述信号通信协议可以是P2P传输协议。例如，所述P2P传输协议可以是三星主导的USI-T协议、LG主导的ISP协议、Novatek主导的PHI协议等。
在步骤S20，数据源驱动集成电路根据所述待显示的帧图像对应的伽马值和所述待显示的帧图像中液晶面板的每个像素对应的灰阶值，生成用于提供给所述每个像素的灰阶电压，其中，所述待显示的帧图像对应的伽马值不同于相邻的帧图像对应的伽马值。即，所述待显示的帧图像对应的伽马值与其上一帧图像所对应的伽马值和其下一帧图像所对应的伽马值均不同。
优选地，所述待显示的帧图像对应的伽马值不同于所述待显示的帧图像的上一帧图像对应的伽马值和所述待显示的帧图像的下一帧图像对应的伽马值，并且，所述待显示的帧图像的上一帧图像对应的伽马值和所述待显示的帧图像的下一帧图像对应的伽马值相同。具体说来，从第一帧图像开始，奇数帧图像对应的伽马值相同(例如，为第一伽马值)，偶数帧图像对应的伽马值相同(例如，为第二伽马值)，但第一伽马值和第二伽马值不同。这里，第一伽马值和第二伽马值可根据实际情况进行设置，例如，可根据实际测量和调试情况来设置第一伽马值和第二伽马值，例如，第一伽马值可为1.8、第二伽马值可为2.3。
在步骤S30，液晶面板基于提供给所述每个像素的灰阶电压来显示所述待显示的帧图像。
图5示出根据本发明示例性实施例的生成灰阶电压的方法的流程图。
如图5所示，在步骤S201，接收器从时序控制器接收包括待显示的帧图像对应的伽马值的数据并解析出所述待显示的帧图像对应的伽马值。
在步骤S202，伽马模块根据所述待显示的帧图像对应的伽马值和所述待显示的帧图像中液晶面板的每个像素对应的灰阶值，生成用于提供给所述每个像素的灰阶电压。
在步骤S203，数模转换器将生成的用于提供给所述每个像素的灰阶电压转换成模拟电压。
在根据本发明的示例性实施例的改善液晶显示器的大视角色偏的方法中，时序控制器在即将显示一帧图像时，将与该帧图像对应的伽马值发送到数据源驱动集成电路，从而数据源驱动集成电路可根据该帧图像对应的伽马值来向液晶面板中的各个像素提供相应的灰阶电压以显示所述一帧图像。相应地，时序控制器在即将显示所述一帧图像的下一帧图像时，将与该下一帧图像对应的伽马值发送到数据源驱动集成电路，从而数据源驱动集成电路可根据该下一帧图像对应的伽马值来向液晶面板中的各个像素提供相应的灰阶电压以显示所述下一帧图像。由于所述一帧图像和所述下一帧图像所对应的伽马值不同，因此，液晶面板在显示所述一帧图像和所述下一帧图像时，液晶面板的同一位置处的像素的光学亮度曲线不同，而通过人眼视觉积分，正好将这两条光学亮度曲线中和出一条伽马值接近2.2的光学亮度曲线，从而降低了大视角色偏，并且，液晶面板的刷新频率越高，降低大视角色偏的效果越明显。
根据本发明示例性实施例的改善液晶显示器的大视角色偏的方法，能够利用液晶显示器中现有的器件及P2P通信架构，无需增加额外的器件和技术支持，在不增加成本的同时，实现上更便捷。
根据本发明示例性实施例的液晶显示器及改善液晶显示器的大视角色偏的方法，能够在不提高产品成本、不降低液晶面板的穿透率的情况下，降低大视角的色偏，从而增大液晶显示器的观看视角。
虽然已表示和描述了本发明的一些示例性实施例，但本领域技术人员应该理解，在不脱离由权利要求及其等同物限定其范围的本发明的原理和精神的情 况下，可以对这些实施例进行修改。

Claims (16)

  1. 一种液晶显示器，其中，包括：
    时序控制器，用于将包括待显示的帧图像对应的伽马值的数据发送到数据源驱动集成电路；
    数据源驱动集成电路，用于根据所述待显示的帧图像对应的伽马值和所述待显示的帧图像中液晶面板的每个像素对应的灰阶值，生成用于提供给所述每个像素的灰阶电压；
    液晶面板，用于基于提供给所述每个像素的灰阶电压来显示所述待显示的帧图像，
    其中，所述待显示的帧图像对应的伽马值不同于相邻的帧图像对应的伽马值。
  2. 根据权利要求1所述的液晶显示器，其中，所述待显示的帧图像对应的伽马值不同于所述待显示的帧图像的上一帧图像对应的伽马值和所述待显示的帧图像的下一帧图像对应的伽马值，并且，所述待显示的帧图像的上一帧图像对应的伽马值和所述待显示的帧图像的下一帧图像对应的伽马值相同。
  3. 根据权利要求1所述的液晶显示器，其中，数据源驱动集成电路包括：
    接收器，用于从时序控制器接收包括待显示的帧图像对应的伽马值的数据并解析出所述待显示的帧图像对应的伽马值；
    伽马模块，根据所述待显示的帧图像对应的伽马值和所述待显示的帧图像中液晶面板的每个像素对应的灰阶值，生成用于提供给所述每个像素的灰阶电压；
    数模转换器，将生成的用于提供给所述每个像素的灰阶电压转换成模拟电压。
  4. 根据权利要求2所述的液晶显示器，其中，数据源驱动集成电路包括：
    接收器，用于从时序控制器接收包括待显示的帧图像对应的伽马值的数据并解析出所述待显示的帧图像对应的伽马值；
    伽马模块，根据所述待显示的帧图像对应的伽马值和所述待显示的帧图像中液晶面板的每个像素对应的灰阶值，生成用于提供给所述每个像素的灰阶电压；
    数模转换器，将生成的用于提供给所述每个像素的灰阶电压转换成模拟电压。
  5. 根据权利要求1所述的液晶显示器，其中，时序控制器利用信号传输协议将包括待显示的帧图像对应的伽马值的数据发送到数据源驱动集成电路。
  6. 根据权利要求2所述的液晶显示器，其中，时序控制器利用信号传输协议将包括待显示的帧图像对应的伽马值的数据发送到数据源驱动集成电路。
  7. 根据权利要求5所述的液晶显示器，其中，所述信号通信协议是P2P传输协议。
  8. 根据权利要求6所述的液晶显示器，其中，所述信号通信协议是P2P传输协议。
  9. 一种改善液晶显示器的大视角色偏的方法，其中，包括：
    (A)时序控制器将包括待显示的帧图像对应的伽马值的数据发送到数据源驱动集成电路；
    (B)数据源驱动集成电路根据所述待显示的帧图像对应的伽马值和所述待显示的帧图像中液晶面板的每个像素对应的灰阶值，生成用于提供给所述每个像素的灰阶电压；
    (C)液晶面板基于提供给所述每个像素的灰阶电压来显示所述待显示的帧图像，
    其中，所述待显示的帧图像对应的伽马值不同于相邻的帧图像对应的伽马值。
  10. 根据权利要求9所述的方法，其中，所述待显示的帧图像对应的伽马 值不同于所述待显示的帧图像的上一帧图像对应的伽马值和所述待显示的帧图像的下一帧图像对应的伽马值，并且，所述待显示的帧图像的上一帧图像对应的伽马值和所述待显示的帧图像的下一帧图像对应的伽马值相同。
  11. 根据权利要求9所述的方法，其中，步骤(B)包括：
    (b1)接收器从时序控制器接收包括待显示的帧图像对应的伽马值的数据并解析出所述待显示的帧图像对应的伽马值；
    (b2)伽马模块根据所述待显示的帧图像对应的伽马值和所述待显示的帧图像中液晶面板的每个像素对应的灰阶值，生成用于提供给所述每个像素的灰阶电压；
    (b3)数模转换器将生成的用于提供给所述每个像素的灰阶电压转换成模拟电压。
  12. 根据权利要求10所述的方法，其中，步骤(B)包括：
    (b1)接收器从时序控制器接收包括待显示的帧图像对应的伽马值的数据并解析出所述待显示的帧图像对应的伽马值；
    (b2)伽马模块根据所述待显示的帧图像对应的伽马值和所述待显示的帧图像中液晶面板的每个像素对应的灰阶值，生成用于提供给所述每个像素的灰阶电压；
    (b3)数模转换器将生成的用于提供给所述每个像素的灰阶电压转换成模拟电压。
  13. 根据权利要求9所述的方法，其中，时序控制器利用信号传输协议将包括待显示的帧图像对应的伽马值的数据发送到数据源驱动集成电路。
  14. 根据权利要求10所述的方法，其中，时序控制器利用信号传输协议将包括待显示的帧图像对应的伽马值的数据发送到数据源驱动集成电路。
  15. 根据权利要求13所述的方法，其中，所述信号通信协议是P2P传输协议。
  16. 根据权利要求14所述的方法，其中，所述信号通信协议是P2P传输协议。
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