WO2013040963A1 - Tft-lcd面板及其驱动方法 - Google Patents

Tft-lcd面板及其驱动方法 Download PDF

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Publication number
WO2013040963A1
WO2013040963A1 PCT/CN2012/080030 CN2012080030W WO2013040963A1 WO 2013040963 A1 WO2013040963 A1 WO 2013040963A1 CN 2012080030 W CN2012080030 W CN 2012080030W WO 2013040963 A1 WO2013040963 A1 WO 2013040963A1
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sub
gate lines
units
driving
gate
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PCT/CN2012/080030
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English (en)
French (fr)
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吕敬
彭宽军
张玉婷
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京东方科技集团股份有限公司
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Priority to KR1020127028655A priority Critical patent/KR20130041801A/ko
Priority to EP12778025.2A priority patent/EP2597511A4/en
Priority to JP2014531080A priority patent/JP2014529104A/ja
Priority to US13/698,447 priority patent/US20130141658A1/en
Publication of WO2013040963A1 publication Critical patent/WO2013040963A1/zh

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    • 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
    • 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
    • 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
    • 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
    • G09G3/3674—Details of drivers for scan electrodes
    • G09G3/3677—Details of drivers for scan 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
    • G09G3/3685—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
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0202—Addressing of scan or signal lines
    • G09G2310/0205—Simultaneous scanning of several lines in flat panels
    • 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

  • a thin film transistor liquid crystal display (Thin Film Transistor Liquid)
  • the Gate Driver on Array (GOA) technology is a typical example of these new technologies.
  • the GOA technology integrates the gate driving unit on the array substrate to form a GOA unit, thereby eliminating the external gate driver circuit (Gate Driver IC) portion, and achieving the purpose of reducing product cost from two aspects of material cost and process steps. .
  • P is the power consumption
  • f is the frequency of the clock signal
  • C is the size of the capacitor
  • V is the difference between the high and low levels of the pulse signal.
  • the power consumption of the GOA portion is proportional to the frequency f of the clock pulse signal in the case where the clock pulse signal is determined at a high level and a low level.
  • the power consumption of the GOA section will be doubled.
  • such changes can sometimes lead to product design failures.
  • the GOA technology uses a TFT process, in contrast to the conventional Complementary Metal Oxide Semiconductor (CMOS) process in the Chip On Film (COF) mode, in addition to the logic power consumption of the panel.
  • CMOS Complementary Metal Oxide Semiconductor
  • COF Chip On Film
  • One of the technical problems to be solved by the embodiments of the present invention is that the panel logic power consumption is not increased at a high refresh rate and the pixel charging rate is satisfied.
  • An embodiment of the present invention provides a thin film transistor liquid crystal display (TFT-LCD) panel, comprising: a plurality of sub-pixel units defined by a plurality of rows of gate lines and a plurality of columns of data lines, each row of gate lines being connected to provide a gate a driving unit of the pole driving signal, wherein a first data line and a second data line for providing data signals for the column of pixel units are respectively disposed on two sides of each column of sub-pixel units; and two adjacent sub-pixel units of each column are respectively associated with the first A data line and a second data line are connected; each of the two driving units provides the same gate driving signal, and one of the driving units is connected to the odd-numbered gate lines, and the other driving unit is connected to the even-numbered gate lines.
  • TFT-LCD thin film transistor liquid crystal display
  • the two drive units that provide the same gate drive signal are connected to adjacent gate lines.
  • two drive units connected to adjacent gate lines are respectively located on both sides of the panel.
  • the drive unit is a GOA drive unit.
  • Another embodiment of the present invention provides a driving method for the above TFT-LCD panel, for charging each sub-pixel unit on the panel, including:
  • the two driving units that provide the same gate driving signal are driven and the two rows of gate lines connected thereto are simultaneously turned on, and the first data line and the second line are disposed on both sides of each column of the sub-pixel unit.
  • the data lines are respectively charged with the sub-pixel units connected thereto, so that the sub-pixel units connected to the two rows of gate lines are simultaneously charged.
  • the two drive units that provide the same gate drive signal are connected to adjacent gate lines.
  • the drive unit is a GOA drive unit.
  • a first data line and a second data line for providing data signals for the column of pixel units are respectively disposed on two sides of each column of sub-pixel units, and two of the same gate driving signals are provided.
  • a driving unit (for example, a GOA driving unit) is connected to two rows of gate lines. When a gate driving signal arrives, the two rows of gate lines are simultaneously opened, and the first data line and the second data line are respectively connected to the sub-pixel unit. Charging.
  • the TFT-LCD panel can not only increase the charging time of the pixels to improve the charging rate of the pixels, but also reduce the frequency of the clock pulses on the panel to lower the panel. Logic power consumption.
  • FIG. 1 is a schematic view of a TFT-LCD panel in the prior art
  • FIG. 2 is a schematic diagram of a TFT-LCD panel according to an embodiment of the present invention.
  • 21-sub-pixel unit 22-first data line; 23-second data line; 24-gate line; 25-GOA unit. detailed description
  • an embodiment of the present invention provides a TFT-LCD panel 100.
  • a plurality of sub-pixel units 21 defined by a plurality of row gate lines 24 and a plurality of columns of data lines 22, 23 are connected, and each row of gate lines 24 is connected to a GOA unit 25 for providing gate drive signals.
  • the GOA unit 25 is an example of a driving unit in the present invention, which is integrated on the array substrate. In other embodiments of the invention, other forms of drive units, such as COF, may also be employed.
  • a first data line 22 and a second data line 23 for providing data signals for the column of pixel units are disposed on both sides of each column of sub-pixel units 21.
  • the first data line 22 is located on the left side of the sub-pixel unit column
  • the second data line 23 is located on the right side of the sub-pixel unit column.
  • Two adjacent sub-pixel units 21 in each column i.e., two sub-pixel units 21 adjacent in the vertical direction in the drawing, are connected to the first data line 22 and the second data line 23, respectively.
  • Each of the two GOA units 25 is provided with the same gate drive signal, and one of the two GOA units providing the same gate drive signal is connected to the odd-numbered gate lines, and the other The GOA cells are connected to even row gate lines.
  • the odd row gate lines and the even row gate lines may be two adjacent gate lines, that is, not limited to the adjacent relationship shown in FIG. 2.
  • the above two GOA units use the same clock signal, including the pulse width of the clock signal, the rising edge time, the falling edge time, etc., using the same circuit design.
  • each column of sub-pixel units are respectively provided with a first data line 22 and a second data line 23 for providing data signals for the column of pixel units.
  • Two GOA units 25 providing the same gate drive signal are connected to the two rows of gate lines 24; when the gate drive signal comes, the two rows of gate lines 24 are simultaneously turned on, and the first data line 22 and the second data line 23 are respectively directed Charge the sub-pixel unit connected to it.
  • the TFT-LCD panel of this embodiment can not only increase the charging time of the pixels to improve the charging rate of the pixels, but also reduce the frequency of the clock pulses on the panel. To reduce the logic power consumption of the panel.
  • two GOA cells 25 that provide the same gate drive signal are connected to adjacent gate lines 24.
  • the two GOA units 25 connected to the adjacent grid lines 24 are located on either side of the panel, for example, in a peripheral area outside the display area of the panel.
  • the technical solution of the embodiment of the present invention can not only improve the charging rate of the pixel, but also reduce the logic power consumption of the panel.
  • the embodiment of the present invention further provides a driving method of a TFT-LCD panel, which is used for charging each sub-pixel unit on the panel, and the method includes:
  • Step 101 When the gate driving signal arrives, provide two of the same gate driving signals
  • the GOA unit drives the two rows of gate lines connected thereto to be simultaneously opened, and the first data line and the second data line disposed on both sides of each column of the sub-pixel unit are respectively charged with the sub-pixel unit connected thereto, so that the two The sub-pixel units connected to the gate lines are simultaneously charged.
  • step 101 During the driving process of the panel, the above step 101 is repeated, and as the progressive scanning progresses, charging of all the sub-pixel unit rows on the panel is completed.
  • the specific process refers to the foregoing embodiment, and details are not described herein again.
  • two GOA cells providing the same gate drive signal are coupled to adjacent gate lines.
  • the adjacent two rows of gate lines 24 connected by the two GOA units 25 that provide the same gate driving signal are simultaneously turned on, and the two sides of each column of the sub-pixel unit are respectively provided with data for the column of pixel units.
  • the first data line 22 and the second data line 23 of the signal are respectively charged with sub-pixel units connected thereto.
  • the TFT-LCD panel of this embodiment can not only increase the charging time of the pixels to improve the charging rate of the pixels, but also reduce the frequency of the clock pulses on the panel. To reduce the logic power consumption of the panel.

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

Abstract

一种TFT-LCD面板及其驱动方法，其在高刷新频率下不会增加面板逻辑功耗，并且满足像素充电率的要求。该TFT-LCD面板包括：由数行栅线（24）和数列数据线（22，23）交叉定义的数个子像素单元（21），每行栅线（24）连接一个用于提供栅极驱动信号的驱动单元（25），每列子像素单元（21）的两侧分别设置有为该列像素单元（21）提供数据信号的第一数据线（22）和第二数据线（23）；每列相邻的两个子像素单元（21）分别与第一数据线（22）和第二数据线（23）连接；每两个驱动单元（25）提供相同的栅极驱动信号，其中一个驱动单元（25）与奇数行栅线连接，另一个驱动单元（25）与偶数行栅线连接。

Description

TFT-LCD面板及其驱动方法 技术领域
本发明的实施例一种薄膜晶体管液晶显示器（ Thin Film Transistor Liquid
Crystal Display, TFT-LCD ) 面板及其驱动方法。 背景技术
随着 TFT-LCD产业的发展， TFT-LCD产品的竟争日趋激烈， 业界通过 釆用新技术以降低产品的成本， 从而提高其产品在市场上的竟争力。 阵列 基板行驱动 (Gate Driver on Array, GOA)技术就是这些新技术的典型代表。 GOA技术是将栅极驱动单元集成于阵列基板上以形成 GOA单元， 从而可 以省掉外接栅极驱动电路（Gate Driver IC )部分， 从材料成本和工艺步骤 两个方面可以达到降低产品成本的目的。
在研究的过程中， 发明人发现现有 GOA技术中至少存在如下问题： 在面板驱动过程中， 不论是 GOA时钟信号还是数据线上的 (数据)信 号， 都是以方波的形式驱动的， 所以面板的逻辑功耗可以用下面的公式来 表示及计算：
P = ( 1/2 ) fCV2
其中， P表示功耗（power ), f表示时钟脉冲信号的频率， C表示电容 的大小， V表示脉冲信号高电平与低电平的差值。
从上述公式中可以看到， GOA部分的功耗在时钟脉冲信号高电平与低 电平确定的情况下， 与时钟脉冲信号的频率 f存在正比的关系。 例如， 面板 刷新频率由 60Hz驱动变为 120Hz驱动时， GOA部分的功耗将会增加一倍。 对于逻辑功耗有特定要求的面板， 这样的变化有时甚至会导致产品设计的 失败。
GOA技术由于釆用了 TFT工艺，相对于传统的覆晶薄膜（ Chip On Film, COF ) 方式中釆用的互补金属氧化物半导体 ( Complementary Metal Oxide Semiconductor, CMOS )工艺，除了面板的逻辑功耗会有一定程度的上升夕卜， GOA信号的延迟比 COF方式要大， 所以当面板的刷新频率要求提高时，无 法满足像素的充电率要求 t 发明内容
本发明的实施例所要解决的技术问题之一在于， 在高刷新频率下不会增 加面板逻辑功耗， 并满足像素充电率的要求。
本发明的一个实施例提供了一种薄膜晶体管液晶显示 ( TFT-LCD )面板， 包括： 由数行栅线和数列数据线交叉定义的数个子像素单元， 每行栅线连接 一个用于提供栅极驱动信号的驱动单元， 每列子像素单元的两侧分别设置有 为该列像素单元提供数据信号的第一数据线和第二数据线； 每列相邻的两个 子像素单元分别与所述第一数据线和第二数据线连接； 每两个驱动单元提供 相同的栅极驱动信号， 且其中一个驱动单元与奇数行栅线连接， 另一个驱动 单元与偶数行栅线连接。
例如，所述提供相同的栅极驱动信号的两个驱动单元与相邻的栅线连接。 例如 , 与相邻栅线连接的两个驱动单元分别位于面板的两侧。
例如， 所述驱动单元为 GOA驱动单元。
本发明的另一个实施例提供了一种上述 TFT-LCD面板的驱动方法， 用 于对所述面板上的各子像素单元充电， 包括：
当栅极驱动信号到来时， 提供相同的栅极驱动信号的两个驱动单元驱动 和与之相连接的两行栅线同时打开， 设置在每列子像素单元两侧的第一数据 线和第二数据线分别为与之相连接的子像素单元充电， 使得与所述两行栅线 相连接的子像素单元同时充电。
例如，所述提供相同的栅极驱动信号的两个驱动单元与相邻的栅线连接。 例如， 所述驱动单元为 GOA驱动单元。
例如， 釆用上述实施例的技术方案后， 每列子像素单元的两侧分别设置 有为该列像素单元提供数据信号的第一数据线和第二数据线， 提供相同的栅 极驱动信号的两个驱动单元（例如 GOA驱动单元）连接两行栅线， 当栅极 驱动信号到来时， 上述两行栅线同时打开， 第一数据线和第二数据线分别为 与之相连接的子像素单元充电。 与只能为一行栅线相连接的子像素单元充电 的情形相比， 该 TFT-LCD面板不仅能够增加像素的充电时间以改善像素的 充电率， 还能够降低面板上时钟脉冲的频率以降低面板的逻辑功耗。 附图说明
为了更清楚地说明本发明实施例的技术方案， 下面将对实施例的附图作 简单地介绍，显而易见地，下面描述中的附图仅仅涉及本发明的一些实施例， 而非对本发明的限制。
图 1为现有技术中的一种 TFT-LCD面板的示意图；
图 2为本发明实施例中所述的 TFT-LCD面板的示意图。
附图标记：
11-子像素单元； 12-数据线； 13-栅线； 14-GOA单元；
21-子像素单元； 22-第一数据线； 23-第二数据线； 24-栅线； 25-GOA单 元。 具体实施方式
下面结合附图对本发明实施例的 TFT-LCD面板及其驱动方法进行详细 描述。 所描述的实施例仅仅是本发明的一部分实施例， 而不是全部的实 施例。 基于所描述的本发明的实施例， 本领域普通技术人员在无需创造 性劳动的前提下所能获得的所有其他实施例， 都属于本发明保护的范 围。
如图 2所示， 本发明实施例提供一种 TFT-LCD面板 100。 数行栅线 24 和数列数据线 22、 23交叉定义的数个子像素单元 21 , 每行栅线 24连接一 个用于提供栅极驱动信号的 GOA单元 25。 GOA单元 25是本发明之中的驱 动单元的示例， 集成在阵列基板之上。 在本发明的其他实施例之中， 还可 以釆用其他驱动单元形式， 例如 COF。
每列子像素单元 21 的两侧分别设置有为该列像素单元提供数据信号的 第一数据线 22和第二数据线 23。 在图中， 第一数据线 22位于子像素单元 列的左侧， 第二数据线 23位于子像素单元列的右侧。
每列中相邻的两个子像素单元 21 , 即图中垂直方向上相邻的两个子像 素单元 21 , 分别与所述第一数据线 22和第二数据线 23连接。
每两个 GOA单元 25被提供相同的栅极驱动信号，且所述提供相同的栅 极驱动信号的两个 GOA单元中的一个 GOA单元与奇数行栅线连接， 另一 个 GOA单元与偶数行栅线连接。 这里， 奇数行栅线和偶数行栅线可以为不 相邻的两条栅线， 即不局限于图 2中所示的相邻关系。
上述两个 GOA单元釆用相同的时钟信号， 包括时钟信号的脉冲宽度、 上升沿时刻、 下降沿时刻等釆用完全相同的电路设计。
本实施例提供的 TFT-LCD面板 100, 每列子像素单元的两侧分别设置 有为该列像素单元提供数据信号的第一数据线 22和第二数据线 23。提供相 同的栅极驱动信号的两个 GOA单元 25连接两行栅线 24; 当栅极驱动信号 到来时， 上述两行栅线 24同时打开， 第一数据线 22和第二数据线 23分别 向为与之相连接的子像素单元充电。 与只能为一行栅线相连接的子像素单 元充电的情形相比， 该实施例的 TFT-LCD面板不仅能够增加像素的充电时 间以改善像素的充电率， 还能够降低面板上时钟脉冲的频率以降低面板的 逻辑功耗。
如图 2所示， 在一个示例之中， 提供相同的栅极驱动信号的两个 GOA 单元 25与相邻的栅线 24连接。与相邻栅线 24连接的两个 GOA单元 25分 别位于面板的两侧， 例如位于面板的显示区域外的周边区域之中。
由于提供相同的栅极驱动信号的两个 GOA单元 25连接相邻两行栅线 24, 当栅极驱动信号到来时， 上述相邻两行栅线 24同时打开， 设置在每列 子像素单元两侧的第一数据线 22和第二数据线 23分别为与之相连接的子 像素单元充电， 使得与相邻两行栅线 24相连接的子像素单元同时充电。
例如， 当分辨率为 1440 xRGB χ 900的显示器工作在 120Hz的面板刷新 频率之下时， 对于逐行扫描技术中， 一行最大可用充电时间等于用周期除 以扫描行数， 即 1÷120÷900=9.25 ( μδ ); 相比之下， 本发明实施例提供的 TFT-LCD 面板可以同时驱动两行， 此时的最大可用充电时间为 1÷120÷(900÷2)=18.5 ( s ), 与逐行扫描相比增加了一倍， 面板上脉冲时钟 信号的频率为 1÷18.5=54000 ( Hz ), 与逐行扫描的 1÷9.25=108000 ( Hz )相 比下降了一倍， 因此， 釆用本发明实施例的技术方案， 不仅可以改善像素 的充电率， 还可以降低面板的逻辑功耗。
同时， 在釆用上述设计方案时， 如图 2所示， 每个 GOA单元 25在水平 方向空间不变的情况下， 垂直方向空间从原来的一个子像素单元高度变为 目前的两个子像素单元的高度， 所以上述 GOA单元 25的可用空间可以增 加为原来的 2 倍， 对于周边电路的设计， 比如公共电极、 时钟信号等都有 了更大的余地。
本发明实施例还提供一种 TFT-LCD面板的驱动方法， 用于对所述面板 上的各子像素单元充电， 该方法包括：
步骤 101、 当栅极驱动信号到来时， 提供相同的栅极驱动信号的两个
GOA单元驱动与之相连接的两行栅线同时打开， 设置在每列子像素单元两 侧的第一数据线和第二数据线分别为与之相连接的子像素单元充电， 使得 与所述两行栅线相连接的子像素单元同时充电。
所述面板的驱动过程中， 重复上述步骤 101 , 随着逐步扫描的进行， 完 成对所述面板上所有子像素单元行的充电。 具体的过程参照上述实施例， 在此不再赘述。
通过当每一个栅极驱动信号到来时，将与两行栅线相连接的子像素单元 同时充电来改善像素的充电率并且降低面板的逻辑功耗。
进一步的， 在一个示例之中， 提供相同的栅极驱动信号的两个 GOA单 元与相邻的栅线连接。
当栅极驱动信号到来时，提供相同的栅极驱动信号的两个 GOA单元 25 连接的相邻两行栅线 24同时打开， 每列子像素单元的两侧分别设置有为该 列像素单元提供数据信号的第一数据线 22和第二数据线 23分别为与之相 连接的子像素单元充电。 与只能为一行栅线相连接的子像素单元充电的情 况相比， 该实施例的 TFT-LCD面板不仅能够增加像素的充电时间以改善像 素的充电率， 还能够降低面板上时钟脉冲的频率以降低面板的逻辑功耗。
以上所述， 仅为本发明的具体实施方式， 但本发明的保护范围并不局 限于此， 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内， 可 轻易想到变化或替换， 都应涵盖在本发明的保护范围之内。 因此， 本发明 的保护范围应所述以权利要求的保护范围为准。

Claims

权利要求书
1、 一种薄膜晶体管液晶显示器（TFT-LCD ) 面板， 包括： 由数行栅线 和数列数据线交叉定义的数个子像素单元， 每行栅线连接一个用于提供栅极 驱动信号的驱动单元， 其中，
每列子像素单元的两侧分别设置有为该列像素单元提供数据信号的第一 数据线和第二数据线；
每列相邻的两个子像素单元分别与所述第一数据线和第二数据线连接； 每两个驱动单元提供相同的栅极驱动信号， 且其中一个驱动单元与奇数 行栅线连接， 另一个驱动单元与偶数行栅线连接。
2、 根据权利要求 1所述的 TFT-LCD面板， 其中，
所述提供相同的栅极驱动信号的两个驱动单元与相邻的栅线连接。
3、 根据权利要求 1或 2所述的 TFT-LCD面板， 其中，
与相邻栅线连接的两个驱动单元分别位于面板的两侧。
4、 根据权利要求 1-3任一所述的 TFT-LCD面板， 其中， 所述驱动单元 为 GOA驱动单元。
5、 一种如权利要求 1 的薄膜晶体管液晶显示器（TFT-LCD ) 面板的驱 动方法， 用于对所述面板上的各子像素单元充电， 包括：
当栅极驱动信号到来时， 提供相同的栅极驱动信号的两个驱动单元将与 之相连接的两行栅线同时打开， 设置在每列子像素单元两侧的第一数据线和 第二数据线分别为与之相连接的子像素单元充电， 使得与所述两行栅线相连 接的子像素单元同时充电。
6、根据权利要求 5所述的方法， 其中， 所述提供相同的栅极驱动信号的 两个驱动单元与相邻的栅线连接。
7、 根据权利要求 5或 6所述的方法， 其中， 所述驱动单元为 GOA驱动 单元。
8、 根据权利要求 5-7任一所述的方法， 还包括： 重复扫描过程直到面板 上所有子像素单元行完成充电。
PCT/CN2012/080030 2011-09-22 2012-08-13 Tft-lcd面板及其驱动方法 WO2013040963A1 (zh)

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