WO2017156812A1 - 显示驱动电路及显示面板 - Google Patents

显示驱动电路及显示面板 Download PDF

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Publication number
WO2017156812A1
WO2017156812A1 PCT/CN2016/078768 CN2016078768W WO2017156812A1 WO 2017156812 A1 WO2017156812 A1 WO 2017156812A1 CN 2016078768 W CN2016078768 W CN 2016078768W WO 2017156812 A1 WO2017156812 A1 WO 2017156812A1
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Prior art keywords
display panel
gamma reference
reference voltage
display
buffer
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Ceased
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PCT/CN2016/078768
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English (en)
French (fr)
Inventor
邢振周
张俊骁
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Wuhan China Star Optoelectronics Technology Co Ltd
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Wuhan China Star Optoelectronics Technology Co Ltd
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Priority to US15/114,082 priority Critical patent/US10002583B2/en
Publication of WO2017156812A1 publication Critical patent/WO2017156812A1/zh
Anticipated expiration legal-status Critical
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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • 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
    • G—PHYSICS
    • 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
    • G09G2310/027—Details of drivers for data electrodes, the drivers handling digital grey scale data, e.g. use of D/A converters
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/021—Power management, e.g. power saving

Definitions

  • the present invention relates to the field of liquid crystal display technology, and in particular, to a display driving circuit and a display panel.
  • the present invention provides a high-resolution display driving circuit and a display panel that can support a picture with low power consumption, so as to solve the problem that the existing display driving circuit and the display panel have high power consumption or cannot support the picture. High resolution technical issues.
  • the embodiment of the invention provides a display driving circuit for driving a corresponding display panel for screen display, which includes:
  • a line buffer for receiving a video data signal
  • a Gamma reference voltage generator for generating a Gamma reference voltage corresponding to the video data signal
  • a buffer for buffering the video data signal and the Gamma reference voltage for output to a data line of the display panel
  • the Gamma reference voltage generator has a first working time and a second working time
  • the Gamma reference voltage generator outputs the Gamma reference voltage to the buffer during the first operating time; the Gamma reference voltage generator outputs a common voltage to the buffer during the second operating time ;
  • the first working time is a charging time of a display pixel of the display panel
  • the second working time is a non-charging time of a display pixel of the display panel
  • the display driving circuit further includes:
  • a level shifter for voltage boosting the video data signal
  • a digital to analog converter for converting the uplifted video data signal into an analog signal
  • the buffer is specifically configured to buffer the video data signal of the analog signal and the Gamma reference voltage to be output to the data line of the display panel.
  • the Gamma reference voltage generator generates the common voltage according to a voltage of a common line of the display panel, wherein the common voltage is output to a data line of the display panel.
  • the gamma reference voltage generator generates the common voltage according to a voltage of a common line of a set region of the display panel, and the common voltage is output to the display panel The data line corresponding to the area.
  • the embodiment of the invention further provides a display driving circuit for driving a corresponding display panel for screen display, which comprises:
  • a line buffer for receiving a video data signal
  • a Gamma reference voltage generator for generating a Gamma reference voltage corresponding to the video data signal
  • a buffer for buffering the video data signal and the Gamma reference voltage for output to a data line of the display panel
  • the Gamma reference voltage generator has a first working time and a second working time
  • the Gamma reference voltage generator outputs the Gamma reference voltage to the buffer during the first operating time; the Gamma reference voltage generator outputs a common voltage to the buffer during the second operating time .
  • the first working time is a charging time of display pixels of the display panel.
  • the second working time is a non-charging time of display pixels of the display panel.
  • the Gamma reference voltage generator generates the common voltage according to a voltage of a common line of the display panel, wherein the common voltage is output to a data line of the display panel.
  • the gamma reference voltage generator generates the common voltage according to a voltage of a common line of a set region of the display panel, and the common voltage is output to the display panel The data line corresponding to the area.
  • the display driving circuit further includes:
  • a level shifter for voltage boosting the video data signal
  • a digital to analog converter for converting the uplifted video data signal into an analog signal
  • the buffer is specifically configured to buffer the video data signal of the analog signal and the Gamma reference voltage to be output to the data line of the display panel.
  • An embodiment of the present invention further provides a display panel including a data line, a scan line, a common line, a display driving circuit, and display pixels alternately formed by the data line and the scan line;
  • the display driving circuit comprises:
  • a line buffer for receiving a video data signal
  • a Gamma reference voltage generator for generating a Gamma reference voltage corresponding to the video data signal
  • a buffer for buffering the video data signal and the Gamma reference voltage for output to the data line of the display panel
  • the Gamma reference voltage generator has a first working time and a second working time
  • the Gamma reference voltage generator outputs the Gamma reference voltage to the buffer during the first operating time; the Gamma reference voltage generator outputs a common voltage to the buffer during the second operating time .
  • the first working time is a charging time of display pixels of the display panel.
  • the second working time is a non-charging time of display pixels of the display panel.
  • the Gamma reference voltage generator generates the common voltage according to a voltage of the common line of the display panel, wherein the common voltage is output to the data of the display panel line.
  • the Gamma reference voltage generator generates the common voltage according to a voltage of a common line of a set region of the display panel, and the common voltage is output to a setting of the display panel The data line corresponding to the area.
  • the display driving circuit further includes:
  • a level shifter for voltage boosting the video data signal
  • a digital to analog converter for converting the uplifted video data signal into an analog signal
  • the buffer is specifically configured to buffer the video data signal of the analog signal and the Gamma reference voltage for output to the data line of the display panel.
  • the display driving circuit and the display panel of the present invention can support high-resolution images by setting different Gamma reference voltages generated by the Gamma reference voltage generator under different working hours, and the overall power consumption is low;
  • the display driver circuit and the display panel have high power consumption or cannot support the high resolution technical problem of the picture.
  • FIG. 1 is a schematic structural view of a preferred embodiment of a display driving circuit of the present invention
  • FIG. 2 is a waveform diagram of an output signal of a Gamma reference voltage generator of a preferred embodiment of the display driving circuit of the present invention
  • FIG. 3 is a schematic diagram of a common voltage output of a Gamma reference voltage generator of a preferred embodiment of the display driving circuit of the present invention
  • FIG. 4 is a second schematic diagram of a common voltage output of a Gamma reference voltage generator of a preferred embodiment of the display driving circuit of the present invention.
  • FIG. 1 is a schematic structural view of a preferred embodiment of a display driving circuit of the present invention.
  • the display drive circuit 10 includes a line buffer 11, a level shifter 12, a digital-to-analog converter 13, a Gamma reference voltage generator 14, and a buffer 15.
  • Line buffer 11 is for receiving video data signals; level shifter 12 is for voltage boosting of video data signals; digital to analog converter 13 is for converting raised video data signals into analog signals; Gamma reference voltage generator 14 is for generating a Gamma reference voltage corresponding to the video data signal; the buffer 15 is for buffering the video data signal and the Gamma reference voltage for output to the data line of the display panel.
  • the Gamma reference voltage generator 14 has a first working time and a second working time.
  • the first working time is the charging time of the display pixels of the corresponding display panel
  • the second working time is the non-charging time of the display pixels of the corresponding display panel.
  • the Gamma reference voltage generator 14 At the first operating time, the Gamma reference voltage generator 14 outputs the Gamma reference voltage to the buffer 15; at the second operating time, the Gamma reference voltage generator 14 outputs the common voltage to the buffer 15.
  • the line buffer 11 is first used.
  • Buffer receives an external video data signal, and then level shifter 12 (Level Shifter) raises the voltage of the received video data signal.
  • level shifter 12 Level Shifter
  • digital to analog converter 13 converts the raised video data signal into an analog signal to facilitate display pixel driving.
  • the Gamma reference voltage generator 14 While the video data signal is input to the digital-to-analog converter 13, the Gamma reference voltage generator 14 generates a Gamma reference voltage corresponding to the video data signal, and transmits it to the buffer 15 through the digital-to-analog converter 13, in the digital-to-analog converter 13. The video data signal is also transmitted to the buffer 15.
  • the buffer 15 buffers the video data signal and the corresponding Gamma reference voltage to output to the data line of the display panel, thereby performing screen display.
  • the time when the display pixels of the display panel are scanned corresponds to the first working time of the Gamma reference voltage generator 14, and the gap time of two adjacent line scans corresponds to Gamma.
  • the Gamma reference voltage generator 14 of the display driving circuit 10 of the preferred embodiment outputs the Gamma reference voltage to the buffer 15 at the first operating time t1, thereby performing line scanning of the display pixels of the display panel in cooperation with the video data signal.
  • the Gamma reference voltage generator 14 outputs a common voltage to the buffer 15 at the second operation time t2, thereby outputting a common voltage to the pixel electrode of the display pixel of the display panel via the data line, and displaying the pixel electrode and the common electrode of the pixel (with the common line)
  • the voltage applied is a common voltage.
  • the Gamma reference voltage generator 14 does not need to output Gamma at the second working time t2.
  • the reference voltage further reduces the power loss of the Gamma reference voltage generator 14 to save power.
  • the Gamma reference voltage generator 14 can generate a common voltage according to the voltage of the common line of the display panel to ensure a voltage difference across the liquid crystal layer. Specifically, as shown in FIG. 3, the Gamma reference voltage generator 14 obtains the voltage VCOM of the common line of the entire display panel. If there are a plurality of different common lines, the average value of the common line voltage may be taken, and then according to the overall public The voltage of the line is used to generate a common voltage of the Gamma reference voltage generator 14.
  • the Gamma reference voltage generator 14 can generate a common voltage according to the voltage of the common line of the set region of the display panel to ensure a voltage difference across the liquid crystal layer.
  • the display panel is divided into six setting areas, and the voltages of the common lines of the six setting areas are VCOM1, VCOM2, VCOM3, VCOM4, VCOM5, and VCOM6 (the above six voltages can be the same) Or different).
  • the Gamma reference voltage generator 14 can generate corresponding six common voltages according to the voltages of the common lines of the six set regions, respectively, so that the common voltage on the pixel electrodes and the voltage on the common electrode are more matched, thereby further saving the display panel. Display power consumption.
  • the display driving circuit of the preferred embodiment can support a high-resolution picture by setting different Gamma reference voltages generated by the Gamma reference voltage generator at different operating times, and the overall power consumption is low.
  • the present invention also provides a display panel including a data line, a scan line, a common line, a display driving circuit, and display pixels interleaved by the data line and the scan line.
  • the display driving circuit includes a line buffer, a level shifter, a digital to analog converter, a Gamma reference voltage generator, and a buffer.
  • a line buffer is used to receive the video data signal; a level shifter is used to voltage boost the video data signal; a digital to analog converter is used to convert the uplifted video data signal into an analog signal; and a Gamma reference voltage generator is used to generate the video data signal Corresponding Gamma reference voltage; the buffer is used to buffer the video data signal and the Gamma reference voltage for output to the data line of the display panel.
  • the Gamma reference voltage generator has a first working time and a second working time. During the first operating time, the Gamma reference voltage generator outputs a Gamma reference voltage to the buffer; during the second operating time, the Gamma reference voltage generator outputs a common voltage to the buffer.
  • the first working time is a charging time of the display pixels of the display panel
  • the second working time is a non-charging time of the display pixels of the display panel.
  • the Gamma reference voltage generator generates a common voltage according to a voltage of a common line of the display panel, wherein the common voltage is output to the data line of the display panel.
  • the Gamma reference voltage generator generates a common voltage according to a voltage of a common line of a set region of the display panel, and the common voltage is output to a data line corresponding to a set region of the display panel.
  • the display driving circuit and the display panel of the present invention can support high-resolution images by setting different Gamma reference voltages generated by the Gamma reference voltage generator under different working hours, and the overall power consumption is low;
  • the display driver circuit and the display panel have high power consumption or cannot support the high resolution technical problem of the picture.

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

Abstract

一种显示驱动电路及显示面板，显示驱动电路（10）包括线缓冲器（11）、Gamma基准电压生成器（14）以及缓冲器（15），其中Gamma基准电压生成器（14）具有第一工作时间（t1）以及第二工作时间（t2）；在第一工作时间（t1），Gamma基准电压生成器（14）输出Gamma基准电压至缓冲器（15）；在第二工作时间（t2），Gamma基准电压生成器（14）输出公共电压至缓冲器（15）。

Description

显示驱动电路及显示面板 技术领域
本发明涉及液晶显示技术领域，特别涉及一种显示驱动电路及显示面板。
 背景技术
随着科技的发展，人们对显示面板的要求越来越高，如高分辨率以及真彩色等。为了满足用户的需求，现有的中小尺寸显示面板的移动终端的解析度不断提高，用户可以使用移动终端的高清屏幕播放高清电影以及显示高清图片。
但是由于显示面板的解析度的提高，显示面板中的显示像素越来越多，显示驱动电路给显示面板中的显示像素进行充电的充电功耗也越来越大，导致高解析度的移动终端的电池待机时间较短，无法满足用户的需求。
故，有必要提供一种显示驱动电路及显示面板，以解决现有技术所存在的问题。
 技术问题
有鉴于此，本发明提供一种功耗较低且可支持画面的高解析度的显示驱动电路及显示面板；以解决现有的显示驱动电路及显示面板的功耗较高或不可支持画面的高解析度的技术问题。
 技术解决方案
本发明实施例提供一种显示驱动电路，用于驱动相应的显示面板进行画面显示，其包括：
线缓冲器，用于接收视频数据信号；
Gamma基准电压生成器，用于生成与所述视频数据信号对应的Gamma基准电压；以及
缓冲器，用于对所述视频数据信号以及所述Gamma基准电压进行缓冲处理，以输出至所述显示面板的数据线；
其中所述Gamma基准电压生成器具有第一工作时间以及第二工作时间，
在所述第一工作时间，所述Gamma基准电压生成器输出所述Gamma基准电压至所述缓冲器；在所述第二工作时间，所述Gamma基准电压生成器输出公共电压至所述缓冲器；
其中所述第一工作时间为所述显示面板的显示像素的充电时间，所述第二工作时间为所述显示面板的显示像素的非充电时间；
其中所述显示驱动电路还包括：
电平转换器，用于对所述视频数据信号进行电压抬升；以及
数模转换器，用于将抬升后的所述视频数据信号转换为模拟信号；
所述缓冲器具体用于对模拟信号的所述视频数据信号以及所述Gamma基准电压进行缓冲处理，以输出至所述显示面板的数据线。
在本发明所述的显示驱动电路中，所述Gamma基准电压生成器根据所述显示面板的公共线的电压生成所述公共电压，其中所述公共电压输出至所述显示面板的数据线。
在本发明所述的显示驱动电路中，所述Gamma基准电压生成器根据所述显示面板的设定区域的公共线的电压生成所述公共电压，所述公共电压输出至所述显示面板的设定区域对应的数据线。
本发明实施例还提供一种显示驱动电路，用于驱动相应的显示面板进行画面显示，其包括：
线缓冲器，用于接收视频数据信号；
Gamma基准电压生成器，用于生成与所述视频数据信号对应的Gamma基准电压；以及
缓冲器，用于对所述视频数据信号以及所述Gamma基准电压进行缓冲处理，以输出至所述显示面板的数据线；
其中所述Gamma基准电压生成器具有第一工作时间以及第二工作时间，
在所述第一工作时间，所述Gamma基准电压生成器输出所述Gamma基准电压至所述缓冲器；在所述第二工作时间，所述Gamma基准电压生成器输出公共电压至所述缓冲器。
在本发明所述的显示驱动电路中，所述第一工作时间为所述显示面板的显示像素的充电时间。
在本发明所述的显示驱动电路中，所述第二工作时间为所述显示面板的显示像素的非充电时间。
在本发明所述的显示驱动电路中，所述Gamma基准电压生成器根据所述显示面板的公共线的电压生成所述公共电压，其中所述公共电压输出至所述显示面板的数据线。
在本发明所述的显示驱动电路中，所述Gamma基准电压生成器根据所述显示面板的设定区域的公共线的电压生成所述公共电压，所述公共电压输出至所述显示面板的设定区域对应的数据线。
在本发明所述的显示驱动电路中，所述显示驱动电路还包括：
电平转换器，用于对所述视频数据信号进行电压抬升；以及
数模转换器，用于将抬升后的所述视频数据信号转换为模拟信号；
所述缓冲器具体用于对模拟信号的所述视频数据信号以及所述Gamma基准电压进行缓冲处理，以输出至所述显示面板的数据线。
本发明实施例还提供一种显示面板，其包括数据线、扫描线、公共线、显示驱动电路以及由所述数据线和所述扫描线交错形成的显示像素；
其中所述显示驱动电路包括：
线缓冲器，用于接收视频数据信号；
Gamma基准电压生成器，用于生成与所述视频数据信号对应的Gamma基准电压；以及
缓冲器，用于对所述视频数据信号以及所述Gamma基准电压进行缓冲处理，以输出至所述显示面板的所述数据线；
其中所述Gamma基准电压生成器具有第一工作时间以及第二工作时间，
在所述第一工作时间，所述Gamma基准电压生成器输出所述Gamma基准电压至所述缓冲器；在所述第二工作时间，所述Gamma基准电压生成器输出公共电压至所述缓冲器。
在本发明所述的显示面板中，所述第一工作时间为所述显示面板的显示像素的充电时间。
在本发明所述的显示面板中，所述第二工作时间为所述显示面板的显示像素的非充电时间。
在本发明所述的显示面板中，所述Gamma基准电压生成器根据所述显示面板的所述公共线的电压生成所述公共电压，其中所述公共电压输出至所述显示面板的所述数据线。
在本发明所述的显示面板中，所述Gamma基准电压生成器根据所述显示面板的设定区域的公共线的电压生成所述公共电压，所述公共电压输出至所述显示面板的设定区域对应的数据线。
在本发明所述的显示面板中，所述显示驱动电路还包括：
电平转换器，用于对所述视频数据信号进行电压抬升；以及
数模转换器，用于将抬升后的所述视频数据信号转换为模拟信号；
所述缓冲器具体用于对模拟信号的所述视频数据信号以及所述Gamma基准电压进行缓冲处理，以输出至所述显示面板的所述数据线。
 有益效果
本发明的显示驱动电路及显示面板通过在不同工作时间，设置Gamma基准电压生成器生成的不同的Gamma基准电压，可对高解析度的画面进行支持，且整体功耗较低；解决了现有的显示驱动电路及显示面板的功耗较高或不可支持画面的高解析度的技术问题。
 附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面对实施例中所需要使用的附图作简单的介绍。下面描述中的附图仅为本发明的部分实施例，对于本领域普通技术人员而言，在不付出创造性劳动的前提下，还可以根据这些附图获取其他的附图。
图1为本发明的显示驱动电路的优选实施例的结构示意图；
图2为本发明的显示驱动电路的优选实施例的Gamma基准电压生成器的输出信号波形图；
图3为本发明的显示驱动电路的优选实施例的Gamma基准电压生成器的公共电压输出示意图之一；
图4为本发明的显示驱动电路的优选实施例的Gamma基准电压生成器的公共电压输出示意图之二。
 本发明的最佳实施方式
请参照附图中的图式，其中相同的组件符号代表相同的组件。以下的说明是基于所例示的本发明具体实施例，其不应被视为限制本发明未在此详述的其它具体实施例。
请参照图1，图1为本发明的显示驱动电路的优选实施例的结构示意图。该显示驱动电路10包括线缓冲器11、电平转换器12、数模转换器13、Gamma基准电压生成器14以及缓冲器15。
线缓冲器11用于接收视频数据信号；电平转换器12用于对视频数据信号进行电压抬升；数模转换器13用于将抬升后的视频数据信号转换为模拟信号；Gamma基准电压生成器14用于生成与视频数据信号对应的Gamma基准电压；缓冲器15用于对视频数据信号以及Gamma基准电压进行缓冲处理，以输出至显示面板的数据线。
其中Gamma基准电压生成器14具有第一工作时间以及第二工作时间。第一工作时间为相应的显示面板的显示像素的充电时间，第二工作时间为相应的显示面板的显示像素的非充电时间。
在第一工作时间，Gamma基准电压生成器14输出Gamma基准电压至缓冲器15；在第二工作时间，Gamma基准电压生成器14输出公共电压至缓冲器15。
本优选实施例的显示驱动电路10使用时，首先线缓冲器11（Line Buffer）接收外部的视频数据信号，随后电平转换器12（Level Shifter）对接收到的视频数据信号的电压进行抬升。然后通过数模转换器13（D/A Converter）将抬升后的视频数据信号转换为模拟信号，以便于进行显示像素的驱动。
在视频数据信号输入到数模转换器13的同时，Gamma基准电压生成器14生成与视频数据信号对应的Gamma基准电压，并通过数模转换器13传输至缓冲器15，数模转换器13中的视频数据信号也传输至缓冲器15。这样缓冲器15对视频数据信号以及相应的Gamma基准电压进行缓冲处理，以输出至显示面板的数据线，从而进行画面显示。
请参照图2，由于显示面板的显示像素一般是按行扫描，显示面板的显示像素进行扫描的时间对应Gamma基准电压生成器14的第一工作时间，两个相邻行扫描的间隙时间对应Gamma基准电压生成器14的第二工作时间。
本优选实施例的显示驱动电路10的Gamma基准电压生成器14在第一工作时间t1输出Gamma基准电压至缓冲器15，从而配合视频数据信号进行显示面板的显示像素的行扫描。
Gamma基准电压生成器14在第二工作时间t2输出公共电压至缓冲器15，从而经数据线，输出公共电压至显示面板的显示像素的像素电极，显示像素的像素电极和公共电极（与公共线连接）施加电压均为公共电压，此时显示面板的液晶层两端的电压差为零，不会造成显示面板的功耗损失；同时Gamma基准电压生成器14在第二工作时间t2不需要输出Gamma基准电压，进一步降低了Gamma基准电压生成器14的功耗损失，达到节省功耗的目的。
优选的，Gamma基准电压生成器14可根据显示面板的公共线的电压来生成公共电压，以保证液晶层两端的电压差。这里具体可如图3所示，Gamma基准电压生成器14获取显示面板整体的公共线的电压VCOM，如有多条不同的公共线，可取上述公共线电压的平均值，然后根据该整体的公共线的电压来生成Gamma基准电压生成器14的公共电压。
优选的，Gamma基准电压生成器14可根据显示面板的设定区域的公共线的电压生成公共电压，以保证液晶层两端的电压差。这里具体可如图4所示，该显示面板分为6个设定区域，6个设定区域的公共线的电压分别为VCOM1、VCOM2、VCOM3、VCOM4、VCOM5以及VCOM6（以上六个电压可相同、也可不同）。这里Gamma基准电压生成器14可分别根据6个设定区域的公共线的电压生成对应的6个公共电压，以使得像素电极上的公共电压与公共电极上的电压更加匹配，进一步节省显示面板的显示功耗。
本优选实施例的显示驱动电路通过在不同工作时间，设置Gamma基准电压生成器生成的不同的Gamma基准电压，可对高解析度的画面进行支持，且整体功耗较低。
本发明还提供一种显示面板，该显示面板包括数据线、扫描线、公共线、显示驱动电路以及由数据线和扫描线交错形成的显示像素。该显示驱动电路包括线缓冲器、电平转换器、数模转换器、Gamma基准电压生成器以及缓冲器。
线缓冲器用于接收视频数据信号；电平转换器用于对视频数据信号进行电压抬升；数模转换器用于将抬升后的视频数据信号转换为模拟信号；Gamma基准电压生成器用于生成与视频数据信号对应的Gamma基准电压；缓冲器用于对视频数据信号以及Gamma基准电压进行缓冲处理，以输出至显示面板的数据线。
其中Gamma基准电压生成器具有第一工作时间以及第二工作时间。在第一工作时间，Gamma基准电压生成器输出Gamma基准电压至缓冲器；在第二工作时间，Gamma基准电压生成器输出公共电压至缓冲器。
优选的，第一工作时间为显示面板的显示像素的充电时间，第二工作时间为显示面板的显示像素的非充电时间。
优选的，Gamma基准电压生成器根据显示面板的公共线的电压生成公共电压，其中公共电压输出至显示面板的数据线。
优选的，Gamma基准电压生成器根据显示面板的设定区域的公共线的电压生成公共电压，公共电压输出至显示面板的设定区域对应的数据线。
本发明的显示驱动电路及显示面板通过在不同工作时间，设置Gamma基准电压生成器生成的不同的Gamma基准电压，可对高解析度的画面进行支持，且整体功耗较低；解决了现有的显示驱动电路及显示面板的功耗较高或不可支持画面的高解析度的技术问题。
综上所述，虽然本发明已以优选实施例揭露如上，但上述优选实施例并非用以限制本发明，本领域的普通技术人员，在不脱离本发明的精神和范围内，均可作各种更动与润饰，因此本发明的保护范围以权利要求界定的范围为准。

Claims (15)

  1. 一种显示驱动电路，用于驱动相应的显示面板进行画面显示，其包括：
    线缓冲器，用于接收视频数据信号；
    Gamma基准电压生成器，用于生成与所述视频数据信号对应的Gamma基准电压；以及
    缓冲器，用于对所述视频数据信号以及所述Gamma基准电压进行缓冲处理，以输出至所述显示面板的数据线；
    其中所述Gamma基准电压生成器具有第一工作时间以及第二工作时间，
    在所述第一工作时间，所述Gamma基准电压生成器输出所述Gamma基准电压至所述缓冲器；在所述第二工作时间，所述Gamma基准电压生成器输出公共电压至所述缓冲器；
    其中所述第一工作时间为所述显示面板的显示像素的充电时间，所述第二工作时间为所述显示面板的显示像素的非充电时间；
    其中所述显示驱动电路还包括：
    电平转换器，用于对所述视频数据信号进行电压抬升；以及
    数模转换器，用于将抬升后的所述视频数据信号转换为模拟信号；
    所述缓冲器具体用于对模拟信号的所述视频数据信号以及所述Gamma基准电压进行缓冲处理，以输出至所述显示面板的数据线。
  2. 根据权利要求1所述的显示驱动电路，其中所述Gamma基准电压生成器根据所述显示面板的公共线的电压生成所述公共电压，其中所述公共电压输出至所述显示面板的数据线。
  3. 根据权利要求1所述的显示驱动电路，其中所述Gamma基准电压生成器根据所述显示面板的设定区域的公共线的电压生成所述公共电压，所述公共电压输出至所述显示面板的设定区域对应的数据线。
  4. 一种显示驱动电路，用于驱动相应的显示面板进行画面显示，其包括：
    线缓冲器，用于接收视频数据信号；
    Gamma基准电压生成器，用于生成与所述视频数据信号对应的Gamma基准电压；以及
    缓冲器，用于对所述视频数据信号以及所述Gamma基准电压进行缓冲处理，以输出至所述显示面板的数据线；
    其中所述Gamma基准电压生成器具有第一工作时间以及第二工作时间，
    在所述第一工作时间，所述Gamma基准电压生成器输出所述Gamma基准电压至所述缓冲器；在所述第二工作时间，所述Gamma基准电压生成器输出公共电压至所述缓冲器。
  5. 根据权利要求4所述的显示驱动电路，其中所述第一工作时间为所述显示面板的显示像素的充电时间。
  6. 根据权利要求4所述的显示驱动电路，其中所述第二工作时间为所述显示面板的显示像素的非充电时间。
  7. 根据权利要求4所述的显示驱动电路，其中所述Gamma基准电压生成器根据所述显示面板的公共线的电压生成所述公共电压，其中所述公共电压输出至所述显示面板的数据线。
  8. 根据权利要求4所述的显示驱动电路，其中所述Gamma基准电压生成器根据所述显示面板的设定区域的公共线的电压生成所述公共电压，所述公共电压输出至所述显示面板的设定区域对应的数据线。
  9. 根据权利要求4所述的显示驱动电路，其中所述显示驱动电路还包括：
    电平转换器，用于对所述视频数据信号进行电压抬升；以及
    数模转换器，用于将抬升后的所述视频数据信号转换为模拟信号；
    所述缓冲器具体用于对模拟信号的所述视频数据信号以及所述Gamma基准电压进行缓冲处理，以输出至所述显示面板的数据线。
  10. 一种显示面板，其包括数据线、扫描线、公共线、显示驱动电路以及由所述数据线和所述扫描线交错形成的显示像素；
    其中所述显示驱动电路包括：
    线缓冲器，用于接收视频数据信号；
    Gamma基准电压生成器，用于生成与所述视频数据信号对应的Gamma基准电压；以及
    缓冲器，用于对所述视频数据信号以及所述Gamma基准电压进行缓冲处理，以输出至所述显示面板的所述数据线；
    其中所述Gamma基准电压生成器具有第一工作时间以及第二工作时间，
    在所述第一工作时间，所述Gamma基准电压生成器输出所述Gamma基准电压至所述缓冲器；在所述第二工作时间，所述Gamma基准电压生成器输出公共电压至所述缓冲器。
  11. 根据权利要求10所述的显示面板，其中所述第一工作时间为所述显示面板的显示像素的充电时间。
  12. 根据权利要求10所述的显示面板，其中所述第二工作时间为所述显示面板的显示像素的非充电时间。
  13. 根据权利要求10所述的显示面板，其中所述Gamma基准电压生成器根据所述显示面板的所述公共线的电压生成所述公共电压，其中所述公共电压输出至所述显示面板的所述数据线。
  14. 根据权利要求10所述的显示面板，其中所述Gamma基准电压生成器根据所述显示面板的设定区域的公共线的电压生成所述公共电压，所述公共电压输出至所述显示面板的设定区域对应的数据线。
  15. 根据权利要求10所述的显示面板，其中所述显示驱动电路还包括：
    电平转换器，用于对所述视频数据信号进行电压抬升；以及
    数模转换器，用于将抬升后的所述视频数据信号转换为模拟信号；
    所述缓冲器具体用于对模拟信号的所述视频数据信号以及所述Gamma基准电压进行缓冲处理，以输出至所述显示面板的所述数据线。
PCT/CN2016/078768 2016-03-17 2016-04-08 显示驱动电路及显示面板 Ceased WO2017156812A1 (zh)

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180322839A1 (en) * 2017-05-05 2018-11-08 HKC Corporation Limited Display panel and display apparatus using same

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1804985A (zh) * 2005-01-10 2006-07-19 京东方显示器科技公司 液晶显示装置的源极驱动器驱动方法
US20110157249A1 (en) * 2009-12-28 2011-06-30 Seung Nam Park Reference voltage generating circuit and method for generating gamma reference voltage
CN103165089A (zh) * 2011-12-08 2013-06-19 乐金显示有限公司 定时控制器、具有定时控制器的液晶显示设备及驱动方法
CN104658496A (zh) * 2013-11-25 2015-05-27 乐金显示有限公司 显示装置
CN105070262A (zh) * 2015-08-26 2015-11-18 深圳市华星光电技术有限公司 一种源极驱动电路和液晶显示面板

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI336876B (en) * 2004-11-10 2011-02-01 Himax Tech Inc Data driving system and display having adjustable common voltage
JP4878795B2 (ja) * 2005-08-16 2012-02-15 ルネサスエレクトロニクス株式会社 表示制御回路および表示制御方法
US7773104B2 (en) * 2006-09-13 2010-08-10 Himax Technologies Limited Apparatus for driving a display and gamma voltage generation circuit thereof
KR101410955B1 (ko) * 2007-07-20 2014-07-03 삼성디스플레이 주식회사 표시장치 및 표시장치의 구동방법
KR101330353B1 (ko) * 2008-08-08 2013-11-20 엘지디스플레이 주식회사 액정표시장치와 그 구동방법
KR101911087B1 (ko) * 2011-11-22 2018-12-31 리쿠아비스타 비.브이. 전기 습윤 표시 패널의 구동 방법 및 이를 수행하는 전기 습윤 표시 장치
CN102998858A (zh) * 2012-12-11 2013-03-27 京东方科技集团股份有限公司 阵列基板、显示面板、显示装置及其控制方法
KR20150082816A (ko) * 2014-01-08 2015-07-16 삼성디스플레이 주식회사 표시 패널의 구동 방법 및 이를 수행하기 위한 표시 장치
KR102363770B1 (ko) * 2014-07-15 2022-02-17 엘지디스플레이 주식회사 액정 패널, 액정 디스플레이 장치와 이의 구동 방법
CN104809993A (zh) * 2015-04-15 2015-07-29 深圳市华星光电技术有限公司 源极驱动器及液晶显示器

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1804985A (zh) * 2005-01-10 2006-07-19 京东方显示器科技公司 液晶显示装置的源极驱动器驱动方法
US20110157249A1 (en) * 2009-12-28 2011-06-30 Seung Nam Park Reference voltage generating circuit and method for generating gamma reference voltage
CN103165089A (zh) * 2011-12-08 2013-06-19 乐金显示有限公司 定时控制器、具有定时控制器的液晶显示设备及驱动方法
CN104658496A (zh) * 2013-11-25 2015-05-27 乐金显示有限公司 显示装置
CN105070262A (zh) * 2015-08-26 2015-11-18 深圳市华星光电技术有限公司 一种源极驱动电路和液晶显示面板

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