CN104483789A - 液晶显示面板及其驱动方法 - Google Patents

液晶显示面板及其驱动方法 Download PDF

Info

Publication number
CN104483789A
CN104483789A CN201410752075.5A CN201410752075A CN104483789A CN 104483789 A CN104483789 A CN 104483789A CN 201410752075 A CN201410752075 A CN 201410752075A CN 104483789 A CN104483789 A CN 104483789A
Authority
CN
China
Prior art keywords
switch
signal
pixel electrode
sweep
pixel
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CN201410752075.5A
Other languages
English (en)
Other versions
CN104483789B (zh
Inventor
陈政鸿
姜佳丽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TCL China Star Optoelectronics Technology Co Ltd
Original Assignee
Shenzhen China Star Optoelectronics Technology Co Ltd
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 Shenzhen China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to CN201410752075.5A priority Critical patent/CN104483789B/zh
Priority to US14/416,395 priority patent/US9501994B2/en
Priority to PCT/CN2014/095599 priority patent/WO2016090698A1/zh
Publication of CN104483789A publication Critical patent/CN104483789A/zh
Application granted granted Critical
Publication of CN104483789B publication Critical patent/CN104483789B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136286—Wiring, e.g. gate line, drain line
    • 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
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136213—Storage capacitors associated with the pixel electrode
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/13624—Active matrix addressed cells having more than one switching element per pixel
    • 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
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix
    • 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
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix
    • G09G3/3659—Control of matrices with row and column drivers using an active matrix the addressing of the pixel involving the control of two or more scan electrodes or two or more data electrodes, e.g. pixel voltage dependant on signal of two data electrodes
    • 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
    • G09G2320/0666—Adjustment of display parameters for control of colour parameters, e.g. colour temperature
    • 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
    • G09G3/2003—Display 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
    • 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
    • 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
    • G09G3/3674—Details of drivers for scan electrodes
    • G09G3/3677—Details of drivers for scan electrodes suitable for active matrices only

Landscapes

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

Abstract

本发明公开了一种液晶显示面板及其驱动方法，该液晶显示面板包括多个像素单元，每个像素单元包括：数据线；第一扫描线；第二扫描线；第一开关，其配置以接收第一扫描线的扫描信号而开启；第二开关，其配置以接收第二扫描线的预先设定的扫描信号而临界开启；像素电极，其配置以在第一开关开启时，接收来自数据线的数据信号而具有电位，并且在第二开关临界开启时，该像素电极的电位通过该第二开关逐渐减少，直至与公共电极的电位一致。本发明所提出的一种新型的液晶显示面板及其驱动方法，能够实现同一像素在一帧的不同时间内呈现出不同的电压，并且该液晶显示面板内的像素单元的设计不会引起开口率和穿透率的降低。

Description

液晶显示面板及其驱动方法
技术领域
本发明是有关于一种液晶显示器，且特别是有关于一种液晶显示面板及其驱动方法。
背景技术
垂直配向型液晶显示器(Vertical Alignment Liquid Crystal Display,简称VA-LCD)以其宽视野角、高对比度和无须摩擦配向等优势，成为大尺寸TFT-LCD的常用显示器。根据结构和工艺的不同，形成了多种不同的VA显示技术，作为VA显示技术的共性，不同视野角下的色偏(Color Shift)现象是VA产品设计必须面对的重大课题。
为了解决这种大视角下色偏的现象，本领域技术人员设计了多种像素结构来实现降低色偏的目的。常见的针对这种大视角下色偏的对策是采用空间法，即将像素单元的ITO区域划分为若干个畴(Domain)，通过设计多个TFT的方式令不同畴之间亮度不同，来达到大视角下低色偏的效果。
图1所为现有技术中具有三个TFT的像素单元的等效电路图。Gn输出高电平时，通过TFT1向A区的液晶电容Clc-A、存储电容Cst-A、电荷共享电容Ccs-A和Ccs-B进行充放电，通过TFT2向B区的液晶电容Clc-B和存储电容Cst-B进行充放电，最后达到基本相同的像素电压VpA和VpB。充放电结束后，TFT1和TFT2关断，Gn+1输出高电平，TFT3打开，通过电荷共享电容Ccs-A和Ccs-B的电容耦合分压，在节点C形成的电压就是B区域最后的像素电压VpB。由于像素电压VpA和像素电压VpB的存在压差，使得不同畴之间的亮度不同，因此实现了大视角下低色偏的效果。
然而，上述设计会使得开口率较正常的像素设计有很大的降低，进而引起Cell(压接了PCB和COF的液晶屏)穿透率的降低，导致背光源成本的提高。因此，如何解决上述问题，在不降低开口率和穿透率的情况下，实现大视角下低色偏显示效果，乃业界所致力的课题之一。
发明内容
本发明所要解决的技术问题之一是需要提供一种液晶显示面板，该液晶显示面板能够在不降低开口率和穿透率的情况下，实现大视角下低色偏显示效果。另外还提供了该液晶显示面板的驱动方法。
1)为了解决上述技术问题，本发明提供了一种液晶显示面板，包括：多个像素单元，每个像素单元包括：一数据线；一第一扫描线；一第二扫描线，其与所述第一扫描线相邻，配置以发送预先设定的扫描信号；一第一开关，其连接于所述数据线和一像素电极之间，配置以接收所述第一扫描线的扫描信号而开启；一第二开关，其连接于一像素电极和一公共电极之间，配置以接收所述第二扫描线的预先设定的扫描信号而临界开启；一存储电容，其连接于所述像素电极和所述公共电极之间；一液晶电容，其一端连接于所述像素电极；其中，所述像素电极在第一开关开启时，接收来自所述数据线的数据信号而具有电位，并且在所述第二开关临界开启时，该像素电极的电位通过该第二开关逐渐减少，直至与所述公共电极的电位一致。
2)在本发明的第1)项的一个优选实施方式中，所述第一开关和所述第二开关均包括一栅极、一第一源/漏极以及一第二源/漏极，其中，该第一开关的栅极连接所述第一扫描线，该第一开关的第一源/漏极和第二源/漏极分别连接所述数据线和所述像素电极；该第二开关的栅极连接所述第二扫描线，该第二开关的第一源/漏极和第二源/漏极分别连接所述像素电极和所述公共电极。
3)在本发明的第1)项或第2)项中的一个优选实施方式中，所述预先设定的扫描信号为一组随着所述数据线的数据信号的变化而变化的信号。
4)在本发明的第1)项至第3)项中任一个优选实施方式中，所述预先设定的扫描信号的正向电压基于所述公共电压和规定调整电压得到；所述预先设定的扫描信号的负向电压基于所述数据信号的负向电压和所述规定调整电压得到。
5)在本发明的第1)项至第4)项中任一个优选实施方式中，所述规定调整电压的范围是-14V至14V。
6)根据本发明另一方面，还提供了一种上述液晶显示面板的驱动方法，该方法包括：在一正/负半周期间，多条扫描线中的一第一扫描线传送一扫描信号使所述第一开关开启，以将所述数据线中的一数据线的一数据信号传送至一像素电极，而使该像素电极具有电位；同时，在该正/负半周期间，与所述第一扫描线相邻的第二扫描线传送预先设定的扫描信号使所述第二开关临界开启，并通过该第二开关逐渐拉降/拉升所述像素电极的电位，直至所述像素电极的电位与所述公共电极的电位一致。
7)在本发明的第6)项的一个优选实施方式中，所述预先设定的扫描信号为一组随着所述数据线的数据信号的变化而变化的信号。
8)在本发明的第6)项或第7)项中的一个优选实施方式中，所述预先设定的扫描信号的正向电压基于所述公共电压和规定调整电压得到；所述预先设定的扫描信号的负向电压基于所述数据信号的负向电压和所述规定调整电压得到。
9)在本发明的第6)项至第8)项中任一个优选实施方式中，所述规定调整电压的范围是-14V至14V。
与现有技术相比，本发明的一个或多个实施例可以具有如下优点：
本发明实施例的液晶显示面板的像素单元未采用空间法来设计，且通过预先设定的扫描信号对该液晶显示面板进行驱动，能够在不降低开口率的情况下实现同一像素电极在一帧的不同时间呈现出不同的电压，即同一像素在一帧的不同时间呈现不同的亮度，进而实现低色偏的功能。并且由于本发明实施例的液晶显示面板没有降低Cell穿透率，因此无需对背光源增加额外的电路，进而不会增加背光源的成本。
本发明的其它特征和优点将在随后的说明书中阐述，并且，部分地从说明书中变得显而易见，或者通过实施本发明而了解。本发明的目的和其他优点可通过在说明书、权利要求书以及附图中所特别指出的结构来实现和获得。
附图说明
附图用来提供对本发明的进一步理解，并且构成说明书的一部分，与本发明的实施例共同用于解释本发明，并不构成对本发明的限制。在附图中：
图1是现有技术中具有三个TFT的像素单元的等效电路示意图；
图2是根据本发明一实施例的液晶显示面板的结构示意图；
图3是根据本发明一实施例的液晶显示面板的一像素单元的概略结构示意图；
图4是根据本发明一实施例的液晶显示面板的一像素单元的等效电路示意图；
图5是根据本发明一实施例的液晶显示面板的驱动方法的一驱动时序图；
图6是对利用本发明实施例的驱动方法进行模拟的结果图。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚，以下结合附图对本发明作进一步地详细说明。
请参考图2，图2是根据本发明一实施例的液晶显示面板的结构示意图。该显示面板包括影像显示区100、源极驱动器200以及栅极驱动器300。影像显示区100包括由多条数据线(也可称为资料线，如图所示的N条数据线DL1～DLN)与多条扫描线(也可称为闸极线，如图所示的M条扫描线GL1～GLM)交错配置形成的阵列以及多个像素结构110。源极驱动器200通过与其耦接的多条数据线将所提供的数据信号传输至影像显示区100中。栅极驱动器300通过与其耦接的多条扫描线将所提供的扫描信号传输至影像显示区100中。
需要说明的是，本文中涉及到的“像素结构”包括多个像素单元，且各个像素单元被分别配置在由多条数据线和多条扫描线交错形成的每个像素区中，具体如图3所示的例子。在图3中，数据线D(x)和扫描线G1(y)、G2(y)形成了一个像素区，在该像素区中配置了一个像素单元。
图4是关于本发明一实施例的像素单元的等效电路图。请参考图4，该像素单元包括开关元件(T1和T2)、存储电容CST1以及液晶电容CLC。开关元件T1和T2均优选以薄膜晶体管制作而成。
具体如图4所示，开关元件T1连接于数据线Data(x)和一像素电极Vpixel之间，且其控制端(栅极)连接扫描线Gate1(y)，存储电容CST1则连接于像素电极Vpixel与一公共电极Com(y)之间，液晶电容CLC连接于像素电极Vpixel与另一公共电极之间。当开关元件T1接收到来自扫描线Gata1(y)的开启信号时，该开关元件T1开启，数据线Data(x)上的数据信号经由开关元件T1传送至存储电容CST1，存储电容CST1则根据数据信号充电而存储至相应的电位，基于此，像素电极Vpixel也具有相对应的电位，该像素单元就依据此显示影像数据。
然而，以上显示是无法实现低色偏效果的，为了降低成本，并且不影响开口率和穿透率，本实施例提供了一种改进，正如图4所示，该像素设计还包括一开关元件T2，其连接于上述公共电极Com(y)和上述像素电极Vpixel之间，且其控制端连接扫描线Gate2(y)。
需要重点说明的是，相比传统的像素设计，扫描线Gate2(y)传输的信号为一组预先设定的扫描信号，且其大小可调，在本实施例中，该预先设定的扫描信号为一组随着数据信号改变(相对于公共电压)而改变的方波信号。
如图5所示，扫描线Gate2(y)传输的方波信号的占空比与数据线Data(x)传输的方波信号的占空比相同，且数据线Data(x)传输的信号为正向电压信号时，扫描线Gate2(y)传输的信号也为正向电压信号，同理，数据线Data(x)传输的信号为负向电压信号时，扫描线Gate2(y)传输的信号也为负向电压信号。上述这种设置是为了能够使像素电极随着T2的打开而进行缓慢漏电，进而实现同一像素单元在一帧的不同时间呈现不同的亮度，实现低色偏的效果。
优选地，预先设定的扫描信号的大小亦与数据线Data(x)相关。本实施例中，预先设定的扫描信号的正向电压Vgate2+基于公共电压Vcom和规定调整电压X得到，且预先设定的扫描信号的负向电压Vgate2-基于数据信号的负向电压Vdata-和规定调整电压X得到。也就是说，可以通过如下表达式分别得到预先设定的扫描信号的正向电压Vgate2+和负向电压Vgate2-：
(Vgate2+)＝Vcom+X
(Vgate2-)＝(Vdata-)+X
考虑到实际显示时所需要的亮度，优选地，X的取值范围在(-14V～14V)，通过调整X值的大小来调整像素的亮度，最终达到所需要的大视角显示效果。当然，上述仅是一个优选例子，本领域技术人员可以根据实际需要选择规定调整电压X。
在开关元件T2接收来自扫描线Gate2(y)的预先设定的扫描信号时，开关元件T2将临界开启。所谓“临界开启”可以定义为TFT未工作在其饱和电压下的TFT状态，后文也可称为微开启。
在开关元件T2在微开启过程中，使像素电极Vpixel的电位缓慢漏电至公共电极Com(y)的电位(公共电压)，换言之，该像素电极Vpixel的电位通过该开关元件T2逐渐减少，直至与公共电极Com(y)的电位一致，那么，在整个漏电过程中像素电极Vpixel的电位在一帧的不同时间具有不同的电位，也就实现了同一像素在一帧的不同时间呈现不同的亮度，进而实现低色偏的功能。
下面参考图5说明在2D显示时的具体驱动时序情况。然，图5仅为示例而已，并非用以限定本发明，亦即在不脱离本发明的精神和范围内，像素电极Vpixel的电位变化可依据实际需求有所调整。
在进行2D显示时，概述地说是，通过增设的开关元件T2和控制该元件的扫描线Gate2(y)的扫描信号来将像素电极Vpixel的电位拉低，造成该像素电极Vpixel的电位在一帧的不同时间形成一定的差异△V，实现较佳的低色偏效果。
具体地，请同时参考图4和图5，在正半周(即极性反转中的正极性反转，数据信号电位大于公共电极COM的电位)期间，当扫描线Gate1(y)传输扫描信号(输出高电平)时，开关元件T1根据扫描信号开启，使数据线Data(x)上的数据信号经由开关元件T1传送至存储电容CST1，存储电容CST1则根据数据信号充电而存储相应的电位，致使像素电极Vpixel据此具有相对应的电位。
接着，由于扫描线Gate2(y)在此期间传送预先设定的扫描信号，开关元件T2根据该扫描信号微开启，通过该开关元件T2像素电极Vpixel的电位被缓慢拉降(漏电)，直至像素电极Vpixel的电位与公共电极COM的电位一致，这样，在正半周期内，能够实现同一像素在不同时间具有不同电压。
相反地，于负半周(即极性反转中的负极性反转，数据信号电位小于公共电极COM的电位)期间，当扫描线Gate1(y)传输扫描信号时，开关元件T1根据扫描信号开启，使得数据线Data(x)上的数据信号经由开关元件T1传送至存储电容CST1，存储电容CST1则根据数据信号充电而存储相应的电位，致使像素电极Vpixel据此具有相对应的电位。
接着，由于扫描线Gate2(y)在此期间传送直流扫描信号，开关元件T2根据扫描信号微开启，通过该开关元件T2像素电极Vpixel的电位被逐渐拉升，直至像素电极Vpixel的电位与公共电极COM的电位一致，这样，在负半周期形成同一像素在不同时间具有不同电压。
如此一来，无论在进行正极性反转操作还是负极性反转操作的状态下，同一像素在一帧的不同时间均具有不同的电位，使得所呈现的亮度也不同，因此能够有效地解决在2D显示时显示器具有色偏的问题，实现低色偏功能。
另外，本实施例的像素单元相比现有技术中，没有增加多个TFT或多个电容，致使没有影响开口率和Cell穿透率的大小，进而没有提高背光源的成本。
进一步，本发明的发明人通过实验来验证本发明实施例的效果，具体如图6所示，可以看出像素电极Vpixel的电位呈现缓慢的变化，且达到同一像素在一帧的不同时间呈现不同的电压的效果。
以上所述，仅为本发明较佳的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉该技术的人员在本发明所揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应该以权利要求的保护范围为准。

Claims (9)

1.一种液晶显示面板，包括：
多个像素单元，每个像素单元包括：
一数据线；
一第一扫描线；
一第二扫描线，其与所述第一扫描线相邻，配置以发送预先设定的扫描信号；
一第一开关，其连接于所述数据线和一像素电极之间，配置以接收所述第一扫描线的扫描信号而开启；
一第二开关，其连接于一像素电极和一公共电极之间，配置以接收所述第二扫描线的预先设定的扫描信号而临界开启；
一存储电容，其连接于所述像素电极和所述公共电极之间；
一液晶电容，其一端连接于所述像素电极；
其中，所述像素电极在第一开关开启时，接收来自所述数据线的数据信号而具有电位，并且在所述第二开关临界开启时，该像素电极的电位通过该第二开关逐渐减少，直至与所述公共电极的电位一致。
2.根据权利要求1所述的液晶显示面板，其特征在于，所述第一开关和所述第二开关均包括一栅极、一第一源/漏极以及一第二源/漏极，
其中，该第一开关的栅极连接所述第一扫描线，该第一开关的第一源/漏极和第二源/漏极分别连接所述数据线和所述像素电极；
该第二开关的栅极连接所述第二扫描线，该第二开关的第一源/漏极和第二源/漏极分别连接所述像素电极和所述公共电极。
3.根据权利要求1所述的液晶显示面板，其特征在于，
所述预先设定的扫描信号为一组随着所述数据线的数据信号的变化而变化的信号。
4.根据权利要求3所述的液晶显示面板，其特征在于，
所述预先设定的扫描信号的正向电压基于所述公共电压和规定调整电压得到；
所述预先设定的扫描信号的负向电压基于所述数据信号的负向电压和所述规定调整电压得到。
5.根据权利要求4所述的液晶显示面板，其特征在于，
所述规定调整电压的范围是-14V至14V。
6.一种如权利要求1至5中任一项所述液晶显示面板的驱动方法，该方法包括：
在一正/负半周期间，多条扫描线中的一第一扫描线传送一扫描信号使所述第一开关开启，以将所述数据线中的一数据线的一数据信号传送至一像素电极，而使该像素电极具有电位；
同时，在该正/负半周期间，与所述第一扫描线相邻的第二扫描线传送预先设定的扫描信号使所述第二开关临界开启，并通过该第二开关逐渐拉降/拉升所述像素电极的电位，直至所述像素电极的电位与所述公共电极的电位一致。
7.根据权利要求6所述的驱动方法，其特征在于，
所述预先设定的扫描信号为一组随着所述数据线的数据信号的变化而变化的信号。
8.根据权利要求7所述的驱动方法，其特征在于，
所述预先设定的扫描信号的正向电压基于所述公共电压和规定调整电压得到；
所述预先设定的扫描信号的负向电压基于所述数据信号的负向电压和所述规定调整电压得到。
9.根据权利要求8所述的驱动方法，其特征在于，
所述规定调整电压的范围是-14V至14V。
CN201410752075.5A 2014-12-10 2014-12-10 液晶显示面板及其驱动方法 Active CN104483789B (zh)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201410752075.5A CN104483789B (zh) 2014-12-10 2014-12-10 液晶显示面板及其驱动方法
US14/416,395 US9501994B2 (en) 2014-12-10 2014-12-30 Liquid crystal display panel and driving method thereof
PCT/CN2014/095599 WO2016090698A1 (zh) 2014-12-10 2014-12-30 液晶显示面板及其驱动方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410752075.5A CN104483789B (zh) 2014-12-10 2014-12-10 液晶显示面板及其驱动方法

Publications (2)

Publication Number Publication Date
CN104483789A true CN104483789A (zh) 2015-04-01
CN104483789B CN104483789B (zh) 2017-09-26

Family

ID=52758352

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410752075.5A Active CN104483789B (zh) 2014-12-10 2014-12-10 液晶显示面板及其驱动方法

Country Status (3)

Country Link
US (1) US9501994B2 (zh)
CN (1) CN104483789B (zh)
WO (1) WO2016090698A1 (zh)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106842748A (zh) * 2017-03-28 2017-06-13 信利半导体有限公司 一种液晶显示装置的像素结构及液晶显示装置
CN107045240A (zh) * 2017-06-07 2017-08-15 深圳市华星光电技术有限公司 一种液晶显示面板及装置
CN107132676A (zh) * 2017-05-15 2017-09-05 深圳市华星光电技术有限公司 液晶显示装置的视角模式切换方法及液晶显示装置
WO2018121301A1 (zh) * 2016-12-27 2018-07-05 惠科股份有限公司 液晶显示器
WO2018232808A1 (zh) * 2017-06-23 2018-12-27 深圳市华星光电技术有限公司 液晶面板及其驱动显示方法
CN111381408A (zh) * 2018-12-29 2020-07-07 咸阳彩虹光电科技有限公司 一种像素阵列及其液晶面板
WO2020206789A1 (zh) * 2019-04-09 2020-10-15 深圳市华星光电技术有限公司 液晶显示装置及其驱动方法

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107643617A (zh) * 2017-10-25 2018-01-30 惠科股份有限公司 驱动装置及显示装置
US11672534B2 (en) 2020-10-02 2023-06-13 Cilag Gmbh International Communication capability of a smart stapler
US11877897B2 (en) 2020-10-02 2024-01-23 Cilag Gmbh International Situational awareness of instruments location and individualization of users to control displays
US11748924B2 (en) 2020-10-02 2023-09-05 Cilag Gmbh International Tiered system display control based on capacity and user operation
US11963683B2 (en) 2020-10-02 2024-04-23 Cilag Gmbh International Method for operating tiered operation modes in a surgical system
US11830602B2 (en) 2020-10-02 2023-11-28 Cilag Gmbh International Surgical hub having variable interconnectivity capabilities
US11992372B2 (en) 2020-10-02 2024-05-28 Cilag Gmbh International Cooperative surgical displays
GB2607627B (en) * 2021-06-10 2024-01-24 Advanced Risc Mach Ltd Circuitry and method
US11776477B1 (en) * 2022-12-28 2023-10-03 Novatek Microelectronics Corp. Pixel circuit of a display panel

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060024867A1 (en) * 2004-03-24 2006-02-02 Paik Woon S Method of applying electrical stress to low-temperature poly-crystalline thin film transistor
US20090262106A1 (en) * 2008-04-22 2009-10-22 Samsung Electronics Co., Ltd. Method of driving a display panel and display apparatus having the display panel
CN102445796A (zh) * 2011-07-22 2012-05-09 深圳市华星光电技术有限公司 液晶显示装置及其插黑方法
CN102749751A (zh) * 2011-04-22 2012-10-24 奇美电子股份有限公司 显示面板
CN103235428A (zh) * 2013-05-06 2013-08-07 深圳市华星光电技术有限公司 液晶面板的暗点修复方法及液晶面板
CN103454823A (zh) * 2013-09-09 2013-12-18 深圳市华星光电技术有限公司 一种阵列基板及液晶显示面板
CN103576400A (zh) * 2012-07-18 2014-02-12 群康科技(深圳)有限公司 显示器及其驱动方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2979655B2 (ja) * 1991-01-14 1999-11-15 松下電器産業株式会社 アクティブマトリクス基板の駆動方法
JP2517842B2 (ja) * 1994-09-19 1996-07-24 株式会社日立製作所 表示装置
JP2005070110A (ja) * 2003-08-26 2005-03-17 Hitachi Displays Ltd 液晶表示装置
CN101493623B (zh) * 2007-11-06 2010-08-11 上海广电光电子有限公司 垂直取向模式液晶显示装置的像素电路
CN101840119A (zh) * 2009-03-20 2010-09-22 瀚宇彩晶股份有限公司 像素结构及其驱动方法
CN103400563B (zh) * 2013-08-15 2015-04-15 深圳市华星光电技术有限公司 阵列基板及液晶显示装置
US9057899B2 (en) * 2013-09-09 2015-06-16 Shenzhen China Star Optoelectronics Technology Co., Ltd Array substrate and liquid crystal panel
CN103472643B (zh) * 2013-09-25 2016-01-06 深圳市华星光电技术有限公司 一种液晶显示装置、像素结构及其驱动方法
CN103531143B (zh) * 2013-10-22 2015-12-30 深圳市华星光电技术有限公司 阵列基板及3d显示设备

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060024867A1 (en) * 2004-03-24 2006-02-02 Paik Woon S Method of applying electrical stress to low-temperature poly-crystalline thin film transistor
US20090262106A1 (en) * 2008-04-22 2009-10-22 Samsung Electronics Co., Ltd. Method of driving a display panel and display apparatus having the display panel
CN102749751A (zh) * 2011-04-22 2012-10-24 奇美电子股份有限公司 显示面板
CN102445796A (zh) * 2011-07-22 2012-05-09 深圳市华星光电技术有限公司 液晶显示装置及其插黑方法
CN103576400A (zh) * 2012-07-18 2014-02-12 群康科技(深圳)有限公司 显示器及其驱动方法
CN103235428A (zh) * 2013-05-06 2013-08-07 深圳市华星光电技术有限公司 液晶面板的暗点修复方法及液晶面板
CN103454823A (zh) * 2013-09-09 2013-12-18 深圳市华星光电技术有限公司 一种阵列基板及液晶显示面板

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018121301A1 (zh) * 2016-12-27 2018-07-05 惠科股份有限公司 液晶显示器
CN106842748A (zh) * 2017-03-28 2017-06-13 信利半导体有限公司 一种液晶显示装置的像素结构及液晶显示装置
CN107132676A (zh) * 2017-05-15 2017-09-05 深圳市华星光电技术有限公司 液晶显示装置的视角模式切换方法及液晶显示装置
US10593277B2 (en) 2017-05-15 2020-03-17 Shenzhen China Star Optoelectronics Technology Co., Ltd Viewing angle mode switching methods of liquid crystal display device and liquid crystal display device
CN107045240A (zh) * 2017-06-07 2017-08-15 深圳市华星光电技术有限公司 一种液晶显示面板及装置
CN107045240B (zh) * 2017-06-07 2018-12-11 深圳市华星光电半导体显示技术有限公司 一种液晶显示面板及装置
WO2018223591A1 (zh) * 2017-06-07 2018-12-13 深圳市华星光电半导体显示技术有限公司 一种液晶显示面板及装置
WO2018232808A1 (zh) * 2017-06-23 2018-12-27 深圳市华星光电技术有限公司 液晶面板及其驱动显示方法
CN111381408A (zh) * 2018-12-29 2020-07-07 咸阳彩虹光电科技有限公司 一种像素阵列及其液晶面板
WO2020206789A1 (zh) * 2019-04-09 2020-10-15 深圳市华星光电技术有限公司 液晶显示装置及其驱动方法

Also Published As

Publication number Publication date
CN104483789B (zh) 2017-09-26
US20160171947A1 (en) 2016-06-16
US9501994B2 (en) 2016-11-22
WO2016090698A1 (zh) 2016-06-16

Similar Documents

Publication Publication Date Title
CN104483789A (zh) 液晶显示面板及其驱动方法
CN104460151A (zh) 液晶显示面板及其驱动方法
CN101512628B (zh) 有源矩阵基板及具备该有源矩阵基板的显示装置
CN100461253C (zh) 液晶显示器及其驱动方法
TWI397734B (zh) 液晶顯示器及其驅動方法
US20080309599A1 (en) Active Matrix Type Display Device and Drive Control Circuit Used in the Same
US20110249046A1 (en) Liquid crystal display device
US8441424B2 (en) Liquid crystal display device and method of driving the same
CN105047166A (zh) 液晶显示面板驱动方法及液晶显示装置
CN107065253A (zh) 显示面板的驱动方法、显示面板和显示装置
JP2006106690A (ja) 駆動電圧生成回路及びそれを備える表示装置
CN103777421B (zh) 液晶显示装置及其驱动方法
CN109509439B (zh) 显示设备
CN105118470A (zh) 一种栅极驱动电路及栅极驱动方法、阵列基板和显示面板
CN104375346A (zh) 液晶显示面板与液晶显示面板的驱动方法
CN104062824A (zh) 像素结构、具备该像素结构的显示面板
WO2017049679A1 (zh) 一种液晶显示面板及其驱动方法
CN104464680A (zh) 一种阵列基板和显示装置
CN107274851A (zh) 显示面板及其驱动方法和显示装置
US9135881B2 (en) LCD panel driver circuit, driving method and LCD device
CN105304036B (zh) 显示装置
US8913046B2 (en) Liquid crystal display and driving method thereof
CN104050911B (zh) 显示面板及其驱动方法
CN203150082U (zh) 一种用于显示装置驱动控制的光敏控制器和显示装置
CN102456314A (zh) 显示装置及具有显示装置的电子设备

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant