WO2015100728A1 - 一种液晶面板的驱动方法及驱动电路 - Google Patents

一种液晶面板的驱动方法及驱动电路 Download PDF

Info

Publication number
WO2015100728A1
WO2015100728A1 PCT/CN2014/070081 CN2014070081W WO2015100728A1 WO 2015100728 A1 WO2015100728 A1 WO 2015100728A1 CN 2014070081 W CN2014070081 W CN 2014070081W WO 2015100728 A1 WO2015100728 A1 WO 2015100728A1
Authority
WO
WIPO (PCT)
Prior art keywords
pulse signal
control signal
signal
timing
timing pulse
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.)
Ceased
Application number
PCT/CN2014/070081
Other languages
English (en)
French (fr)
Inventor
曾德康
秦杰辉
谭小平
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 GB1610683.3A priority Critical patent/GB2535943B/en
Priority to RU2016125806A priority patent/RU2645289C2/ru
Priority to DE112014006086.0T priority patent/DE112014006086T5/de
Priority to US14/234,148 priority patent/US9236021B2/en
Priority to JP2016540594A priority patent/JP6219525B2/ja
Priority to KR1020167019892A priority patent/KR101838831B1/ko
Publication of WO2015100728A1 publication Critical patent/WO2015100728A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611Control of matrices with row and column drivers
    • G09G3/3674Details of drivers for scan electrodes
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611Control of matrices with row and column drivers
    • G09G3/3696Generation of voltages supplied to electrode drivers
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00Command of the display device
    • G09G2310/02Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0202Addressing of scan or signal lines
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00Command of the display device
    • G09G2310/02Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0264Details of driving circuits
    • G09G2310/0286Details of a shift registers arranged for use in a driving circuit
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00Command of the display device
    • G09G2310/06Details of flat display driving waveforms
    • G09G2310/067Special waveforms for scanning, where no circuit details of the gate driver are given
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00Command of the display device
    • G09G2310/08Details of timing specific for flat panels, other than clock recovery

Definitions

  • the present invention relates to the field of liquid crystal display, and more particularly to a driving method and a driving circuit for a liquid crystal panel. Background technique
  • CTR cathode ray tube
  • LCD liquid crystal display
  • backlight type liquid crystal displays which include a liquid crystal panel and a backlight module.
  • the backlight module includes a vertical and horizontal scanning line and a control line.
  • the data line is controlled by a data driving chip, and the data chip receives data.
  • the data voltage is output to the data line of the liquid crystal panel on the falling edge; the scan line is controlled by the scan driver chip disposed on both sides of the liquid crystal panel.
  • the scan driver chip disposed on both sides of the liquid crystal panel.
  • STV start voltage pulse
  • CKV clock voltage pulse
  • the control signals of these scan driver chips are transmitted from the printed circuit board PCBA to the glass of the liquid crystal panel via the flexible circuit board of the data chip, and are transmitted to the scan driver chip through the glass trace.
  • the mainstream design of the panel has been developed to the narrow bezel.
  • the cost of adding a signal is that there is one more line on the glass, which will occupy the space of the glass edge.
  • the timing controller chip T-CON (the timing controller) must have one more.
  • the control signal will also increase in cost. Summary of the invention
  • an object of the present invention is to provide a driving method and a driving circuit for a liquid crystal panel which can reduce wiring of a liquid crystal panel and reduce cost.
  • the present invention provides a method for driving a liquid crystal panel, including a timing driving process, wherein the timing driving process includes:
  • the start pulse signal has a first rising edge rising from a low level to a high level and a first falling edge falling from a high level to a low level;
  • the timing pulse signal has a second rising edge rising from a low level to an intermediate level, a third rising edge rising from an intermediate level to a high level, and falling from a high level to a middle The second falling edge of the level and the third falling edge falling from the intermediate level to the low level.
  • the method further includes a scan driving process, including the steps:
  • Receiving step receiving a control signal input by the timing driving circuit
  • Conversion step generating a target control signal based on the control signal
  • the scan driving signal for driving the liquid crystal panel is output according to the target control signal.
  • the target control signal includes a start pulse signal, a clock pulse signal, and an enable control signal.
  • the conversion steps include:
  • Timing pulse signal Converting the timing pulse signal into a clock pulse signal and an enable control signal, wherein a rising edge of the clock pulse signal is a third rising edge of the timing pulse signal, and a falling edge of the clock pulse signal is a third falling edge of the timing pulse signal
  • the rising edge of the enable control signal is the second rising edge of the timing pulse signal
  • the falling edge of the enable control signal is the second falling edge of the timing pulse signal.
  • control signal includes a prior start pulse signal and a plurality of subsequent timing pulse signals.
  • Another object of the present invention is to provide a liquid crystal panel driving circuit including a timing driving chip, a scan line, and a scan driving chip coupled to the scan line, wherein the timing driving chip transmits a control signal to the scan driving chip.
  • the control signal includes:
  • Start pulse signal the start pulse signal has a first rise from a low level to a high level a first falling edge along and falling from a high level to a low level;
  • Timing pulse signal The timing pulse signal shown has a second rising edge rising from a low level to an intermediate level, a third rising edge rising from an intermediate level to a high level, and falling from a high level to an intermediate level. The second falling edge and the third falling edge falling from the intermediate level to the low level.
  • the scan driving chip is provided with a decoding module for converting the control signal into a target control signal, and the scan driving chip outputs a scan driving signal for driving the liquid crystal panel according to the target control signal.
  • the target control signal includes a start pulse signal, a clock pulse signal, and an enable control signal.
  • the decoding module converts the start pulse signal into a start pulse signal; converts the timing pulse signal into a clock pulse signal and an enable control signal, wherein a rising edge of the clock pulse signal is a timing pulse signal
  • the rising edge of the clock pulse signal is the third falling edge of the timing pulse signal
  • the rising edge of the enable control signal is the second rising edge of the timing pulse signal
  • the falling edge of the enable control signal is the timing pulse signal Two falling edges.
  • the control signal includes a prior start pulse signal and a plurality of subsequent timing pulse signals.
  • the control signal includes a prior start pulse signal and a plurality of subsequent timing pulse signals.
  • the timing driving chip transmits a control signal to the scan driving chip, and the scan driving chip decodes the control signal into a start pulse signal, a clock pulse signal, and a control scan signal output. Enable the control signal. In this way, only one trace for transmitting the control signal is needed between the timing driving chip and the scan driving chip, thereby reducing the wiring of the liquid crystal panel, which can reduce the design difficulty and reduce the cost.
  • FIG. 1 is a schematic diagram of driving waveforms provided by the prior art.
  • FIG. 2 is a schematic diagram of driving waveforms and a driving waveform after decoding according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a driving circuit of a liquid crystal panel according to an embodiment of the present invention. detailed description
  • the driving method of the liquid crystal panel provided by the embodiment includes a timing driving process and a scanning driving process.
  • the timing driving process includes generating a control signal CS, wherein the control signal CS includes a prior start pulse signal and a plurality of subsequent periodic timing pulse signals during an effective display time.
  • the start pulse signal has a first rising edge rising from a low level to a high level and a first falling edge falling from a high level to a low level;
  • the timing pulse signal has a rise from a low level to an intermediate level
  • Receiving step receiving a control signal CS input by the timing driving circuit
  • Conversion step generating a target control signal based on the control signal CS;
  • the scan driving signal for driving the liquid crystal panel is output according to the target control signal.
  • the target control signal generated based on the control signal CS includes a start pulse signal STV, a clock pulse signal CKV, and an enable control signal OE, which are specifically: converting the start pulse signal into a start pulse signal STV; The timing pulse signal is converted into a clock pulse signal CKV and an enable control signal OE.
  • the first rising edge of the start pulse signal is the rising edge of the start pulse signal STV
  • the first falling edge of the start pulse signal is the falling edge of the start pulse signal STV
  • the second rising edge of the timing pulse signal is the enable control
  • the rising edge of the signal OE, the second falling edge of the timing pulse signal is the falling edge of the enable control signal OE
  • the third rising edge of the timing pulse signal is the rising edge of the clock pulse signal CKV
  • the third falling edge of the timing pulse signal is The falling edge of the clock pulse signal CKV.
  • the embodiment further provides a driving circuit for the liquid crystal panel.
  • the driving circuit 100 includes a timing driving chip 100, a scan line, and a scan driving chip 200 coupled to the scan line.
  • the scan driving chip 200 includes a decoding module. 210.
  • the timing driving chip 100 outputs a control signal CS to the scan driving chip 200.
  • the control signal CS includes a prior start pulse signal and a plurality of subsequent timing pulse signals.
  • the starting pulse has a first rising edge rising from a low level to a high level and a first falling edge falling from a high level to a low level; the timing pulse signal has a second rise from a low level to an intermediate level A third rising edge that rises from the intermediate level to the high level, a second falling edge that falls from the high level to the intermediate level, and a third falling edge that falls from the intermediate level to the low level.
  • the control signal CS is decoded by the decoding module 210 into a target control signal including a start pulse signal STV, a clock pulse signal CKV, and an enable control signal OE, which is specifically:
  • the pulse signal is converted into a start pulse signal STV; the timing pulse signal is converted into a clock pulse signal CKV and an enable control signal OE.
  • the first rising edge of the start pulse signal is the rising edge of the start pulse signal STV
  • the first falling edge of the start pulse signal is the falling edge of the start pulse signal STV
  • the second rising edge of the timing pulse signal is the enable control
  • the rising edge of the signal OE, the second falling edge of the timing pulse signal is the falling edge of the enable control signal OE
  • the third rising edge of the timing pulse signal is the rising edge of the clock pulse signal CKV
  • the third falling edge of the timing pulse signal is The falling edge of the clock pulse signal CKV.
  • the scan driving chip 200 outputs a scan driving signal to the scan line in accordance with the target control signal, and the trace drive signal is used to drive the liquid crystal panel.
  • the timing driving chip transmits a control signal to the scan driving chip, and the scan driving chip decodes the control signal into a start pulse signal for controlling the output of the scan signal. , clock pulse signal and enable control signal.
  • the timing driving chip transmits a control signal to the scan driving chip
  • the scan driving chip decodes the control signal into a start pulse signal for controlling the output of the scan signal. , clock pulse signal and enable control signal.

Landscapes

  • 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)
  • Liquid Crystal (AREA)

Abstract

提供了一种液晶面板的驱动方法,包括时序驱动过程,所述时序驱动过程包括:产生一起始脉冲信号,所述起始脉冲信号具有从低电平上升到高电平的第一上升沿和从高电平下降到低电平的第一下降沿;产生时序脉冲信号,所述时序脉冲信号具有从低电平上升到中间电平的第二上升沿、从中间电平上升到高电平的第三上升沿、从高电平下降到中间电平的第二下降沿以及从中间电平下降到低电平的第三下降沿。还提供了一种液晶面板的驱动电路。该驱动方法及驱动电路中,时序驱动芯片仅将一用于控制扫描驱动信号的控制信号传输到扫描驱动芯片中,从而减少液晶面板的走线。

Description

一种液晶面板的驱动方法及驱动电路 技术领域
本发明涉及液晶显示领域, 更具体地说, 涉及一种液晶面板的驱动方法及 驱动电路。 背景技术
现今科技蓬勃发展, 信息商品种类推陈出新, 满足了大众不同的需求。 早 期显示器多半为阴极射线管 (Cathode Ray Tube, CRT) 显示器, 由于其体积 庞大与耗电量大, 而且所产生的辐射对于长时间使用显示器的使用者而言, 存 在危害身体的问题。 因此, 现今市面上的显示器渐渐由液晶显示器 (Liquid Crystal Display, LCD) 取代旧有的 CRT显示器。 现有市场上的液晶显示器大部分为背光型液晶显示器, 其包括液晶面板及 背光模块 (backlight module 液晶面板包括纵横交错的扫描线和控制线, 数 据线通过数据驱动芯片来控制,数据芯片接受数据启动信号 TP1 (latched pulse) 后, 在下降沿会把数据电压输出给液晶面板的数据线; 扫描线通过设置在液晶 面板两侧的扫描驱动芯片进行控制。 目前控制液晶显示每一行开启和关闭的扫 描驱动芯片需求的控制信号有 3个,如图 1所示,分别是开始脉冲信号 STV( start voltage pulse) , 控制第一行扫描的开始; 时钟脉冲信号 CKV ( clock voltage pulse), 提供到扫描驱动芯片移位寄存器, 控制每一行的开关频率, 在上升沿 侦测到 STV为高电平的时候开始动作;输出使能控制信号 OE (output enable), 其中, 使能控制信号 OE的脉冲信号包含时钟脉冲信号 CKV的上升沿。 因为 液晶面板内部有寄生电容, 扫描输出电压送到液晶面板内会有延时, 行与行之 间的关闭和开启会有交叠的问题, 形成重叠区, 这样会造成数据错充的问题。 而加入 OE之后, OE的高电平会将扫描输出电压强制拉低。 因此, 将 OE置 于行与行开启和关闭的切换之间, 强行使相邻的扫描线不再有同时开启的重叠 区, 避开两行有交叠开启的时间, 避免了数据错充的问题。
这些扫描驱动芯片的控制信号会由印刷电路板 PCBA, 经由数据芯片的软 性电路板传到液晶面板的玻璃, 通过玻璃走线传送到扫描驱动芯片, 目前液晶 面板的主流设计都往窄边框方面发展, 增加一个信号带来的代价是玻璃上要多 走一根线, 会占据玻璃边沿的空间, 另外时序控制芯片 T-CON ( timing controller) 也要多一个控制信号, 成本上也会增加。 发明内容
为解决上述现有技术所存在的问题, 本发明的目的在于提供一种可以减少 液晶面板走线、 降低成本的一种液晶面板的驱动方法及驱动电路。
为了实现上述目的, 本发明提供的一种液晶面板的驱动方法, 包括时序驱 动过程, 其中, 所述时序驱动过程包括:
A、 产生一起始脉冲信号: 所述起始脉冲信号具有从低电平上升到高电平 的第一上升沿和从高电平下降到低电平的第一下降沿;
B、 产生时序脉冲信号: 所述时序脉冲信号具有从低电平上升到中间电平 的第二上升沿、 从中间电平上升到高电平的第三上升沿、 从高电平下降到中间 电平的第二下降沿以及从中间电平下降到低电平的第三下降沿。
其中, 还包括扫描驱动过程, 包括步骤:
接收步骤: 接收时序驱动电路输入的控制信号;
转换步骤: 基于所述控制信号生成目标控制信号;
输出步骤: 根据目标控制信号输出用于驱动液晶面板的扫描驱动信号。 其中, 所述目标控制信号包括开始脉冲信号、 时钟脉冲信号和使能控制信 号。
其中, 转换步骤包括:
将所述起始脉冲信号转换为开始脉冲信号;
将所述时序脉冲信号转换为时钟脉冲信号和使能控制信号, 其中, 时钟脉 冲信号的上升沿为时序脉冲信号的第三上升沿, 时钟脉冲信号的下降沿为时序 脉冲信号的第三下降沿; 使能控制信号的上升沿为时序脉冲信号的第二上升 沿, 使能控制信号的下降沿为时序脉冲信号的第二下降沿。
其中, 在一个有效显示时间内, 所述控制信号包括一个在先的起始脉冲信 号和多个在后的时序脉冲信号。
本发明的另一目的在于提供一种液晶面板驱动电路, 包括时序驱动芯片、 扫描线以及与扫描线耦合的扫描驱动芯片, 其中, 所述时序驱动芯片将一控制 信号传输到扫描驱动芯片中, 所述控制信号包括:
起始脉冲信号: 所述起始脉冲信号具有从低电平上升到高电平的第一上升 沿和从高电平下降到低电平的第一下降沿;
时序脉冲信号: 所示时序脉冲信号具有从低电平上升到中间电平的第二上 升沿、 从中间电平上升到高电平的第三上升沿、 从高电平下降到中间电平的第 二下降沿以及从中间电平下降到低电平的第三下降沿。
其中, 所述时序驱动芯片与扫描驱动芯片之间仅有一根用于传输所述控制 信号的走线。
其中, 所述扫描驱动芯片内设有一用于将所述控制信号转换为目标控制信 号的解码模块, 所述扫描驱动芯片根据目标控制信号输出用于驱动液晶面板的 扫描驱动信号。
, 其中, 所述目标控制信号包括开始脉冲信号、 时钟脉冲信号和使能控制 信号。 其中, 所述解码模块将所述起始脉冲信号转换为开始脉冲信号; 将所述时 序脉冲信号转换为时钟脉冲信号和使能控制信号, 其中, 时钟脉冲信号的上升 沿为时序脉冲信号的第三上升沿, 时钟脉冲信号的下降沿为时序脉冲信号的第 三下降沿; 使能控制信号的上升沿为时序脉冲信号的第二上升沿, 使能控制信 号的下降沿为时序脉冲信号的第二下降沿。
其中, 在一个有效显示时间内, 所述控制信号包括一个在先的起始脉冲信 号和多个在后的时序脉冲信号。 其中, 在一个有效显示时间内, 所述控制信号包括一个在先的起始脉冲信 号和多个在后的时序脉冲信号。 本发明提供的液晶面板的驱动方法及驱动电路中, 时序驱动芯片将一控制 信号传输到扫描驱动芯片中, 扫描驱动芯片将该控制信号解码为控制扫描信号 输出的开始脉冲信号、 时钟脉冲信号和使能控制信号。 这样使得时序驱动芯片 与扫描驱动芯片之间仅需要一根用于传输所述控制信号的走线, 从而减少液晶 面板的走线, 既可以降低设计难度, 又可以减少成本。 附图说明
图 1为现有技术提供的驱动波形示意图。
图 2 为本发明一实施例提供的驱动波形示意图及解码后的驱动波形示意 图。 图 3为本发明一实施例提供的例液晶面板的驱动电路示意图。 具体实施方式
现在对本发明实施例进行详细的描述, 其示例表示在附图中, 其中, 相同 的标号始终表示相同部件。 下面通过参照附图对实施例进行描述以解释本发 明。
参阅图 2, 本实施例提供的液晶面板的驱动方法, 包括时序驱动过程和扫 描驱动过程。 所述时序驱动过程包括产生一控制信号 CS, 其中, 在一个有效 显示时间内控制信号 CS包括一个在先的起始脉冲信号和多个在后的周期性的 时序脉冲信号。该起始脉冲信号具有从低电平上升到高电平的第一上升沿和从 高电平下降到低电平的第一下降沿; 该时序脉冲信号具有从低电平上升到中间 电平的第二上升沿、 从中间电平上升到高电平的第三上升沿、 从高电平下降到 中间电平的第二下降沿以及从中间电平下降到低电平的第三下降沿。
在扫描驱动过程中, 包括以下步骤:
接收步骤: 接收时序驱动电路输入的控制信号 CS;
转换步骤: 基于该控制信号 CS生成目标控制信号;
输出步骤: 根据目标控制信号输出用于驱动液晶面板的扫描驱动信号。 优选地, 在转换步骤中, 基于控制信号 CS生成的目标控制信号包括开始 脉冲信号 STV、 时钟脉冲信号 CKV和使能控制信号 OE, 其具体为: 将起始 脉冲信号转换为开始脉冲信号 STV;将所述时序脉冲信号转换为时钟脉冲信号 CKV和使能控制信号 OE。 其中, 起始脉冲信号的第一上升沿为开始脉冲信号 STV的上升沿, 起始脉冲信号的第一下降沿为开始脉冲信号 STV的下降沿; 时序脉冲信号的第二上升沿为使能控制信号 OE的上升沿, 时序脉冲信号的第 二下降沿为使能控制信号 OE的下降沿; 时序脉冲信号的第三上升沿为时钟脉 冲信号 CKV的上升沿,时序脉冲信号的第三下降沿为时钟脉冲信号 CKV的下 降沿。
本实施例还提供了一种液晶面板的驱动电路, 如图 3所示, 包括时序驱动 芯片 100、 扫描线以及与扫描线耦合的扫描驱动芯片 200, 其中, 扫描驱动芯 片 200内含有一解码模块 210。 时序驱动芯片 100输出一控制信号 CS到扫描 驱动芯片 200中,在一优选的实施例中,时序驱动芯片 100与扫描驱动芯片 200 之间仅有一根用于传输控制信号 CS的走线。 在一个有效显示时间内, 控制信 号 CS包括一个在先的起始脉冲信号和多个在后的时序脉冲信号。 该起始脉冲 信号具有从低电平上升到高电平的第一上升沿和从高电平下降到低电平的第 一下降沿; 该时序脉冲信号具有从低电平上升到中间电平的第二上升沿、 从中 间电平上升到高电平的第三上升沿、从高电平下降到中间电平的第二下降沿以 及从中间电平下降到低电平的第三下降沿。
扫描驱动芯片 200接收该控制信号 CS后, 通过解码模块 210将该控制信 号 CS解码为包括开始脉冲信号 STV、时钟脉冲信号 CKV和使能控制信号 OE 的目标控制信号, 其具体为: 将起始脉冲信号转换为开始脉冲信号 STV; 将所 述时序脉冲信号转换为时钟脉冲信号 CKV和使能控制信号 OE。其中, 起始脉 冲信号的第一上升沿为开始脉冲信号 STV 的上升沿, 起始脉冲信号的第一下 降沿为开始脉冲信号 STV 的下降沿; 时序脉冲信号的第二上升沿为使能控制 信号 OE的上升沿,时序脉冲信号的第二下降沿为使能控制信号 OE的下降沿; 时序脉冲信号的第三上升沿为时钟脉冲信号 CKV的上升沿, 时序脉冲信号的 第三下降沿为时钟脉冲信号 CKV的下降沿。
扫描驱动芯片 200根据目标控制信号输出扫描驱动信号至扫描线, 该描驱 动信号用于驱动液晶面板。
综上所述, 本发明提供的液晶面板的驱动方法及驱动电路中, 时序驱动芯 片将一控制信号传输到扫描驱动芯片中, 扫描驱动芯片将该控制信号解码为控 制扫描信号输出的开始脉冲信号、 时钟脉冲信号和使能控制信号。 这样使得时 序驱动芯片与扫描驱动芯片之间仅需要一根用于传输所述控制信号的走线, 从 而减少液晶面板的走线, 既可以降低设计难度, 又可以减少成本。
需要说明的是, 在本文中, 诸如第一和第二等之类的关系术语仅仅用来将 一个实体或者操作与另一个实体或操作区分开来, 而不一定要求或者暗示这些 实体或操作之间存在任何这种实际的关系或者顺序。 而且, 术语"包括"、 "包 含"或者其任何其他变体意在涵盖非排他性的包含, 从而使得包括一系列要素 的过程、 方法、 物品或者设备不仅包括那些要素, 而且还包括没有明确列出的 其他要素, 或者是还包括为这种过程、 方法、 物品或者设备所固有的要素。 在 没有更多限制的情况下, 由语句 "包括一个 ...... "限定的要素, 并不排除在包括 所述要素的过程、 方法、 物品或者设备中还存在另外的相同要素。 虽然本发明是参照其示例性的实施例被具体描述和显示的,但是本领域的 普通技术人员应该理解, 在不脱离由权利要求限定的本发明的精神和范围的情 况下, 可以对其进行形式和细节的各种改

Claims

权利要求书
1、 一种液晶面板的驱动方法, 包括时序驱动过程, 其中, 所述时序驱动 过程包括:
A、 产生一起始脉冲信号: 所述起始脉冲信号具有从低电平上升到高电平 的第一上升沿和从高电平下降到低电平的第一下降沿;
B、 产生时序脉冲信号: 所述时序脉冲信号具有从低电平上升到中间电平 的第二上升沿、 从中间电平上升到高电平的第三上升沿、 从高电平下降到中间 电平的第二下降沿以及从中间电平下降到低电平的第三下降沿。
2、 根据权利要求 1所述的驱动方法, 其中, 还包括扫描驱动过程, 包括 步骤:
接收步骤: 接收时序驱动电路输入的控制信号;
转换步骤: 基于所述控制信号生成目标控制信号;
输出步骤: 根据目标控制信号输出用于驱动液晶面板的扫描驱动信号。
3、 根据权利要求 2所述的驱动方法, 其中, 所述目标控制信号包括开始 脉冲信号、 时钟脉冲信号和使能控制信号。
4、 根据权利要求 3所述的驱动方法, 其中, 转换步骤包括:
将所述起始脉冲信号转换为开始脉冲信号;
将所述时序脉冲信号转换为时钟脉冲信号和使能控制信号, 其中, 时钟脉 冲信号的上升沿为时序脉冲信号的第三上升沿, 时钟脉冲信号的下降沿为时序 脉冲信号的第三下降沿; 使能控制信号的上升沿为时序脉冲信号的第二上升 沿, 使能控制信号的下降沿为时序脉冲信号的第二下降沿。
5、 根据权利要求 4所述的驱动方法, 其中, 在一个有效显示时间内, 所 述控制信号包括一个在先的起始脉冲信号和多个在后的时序脉冲信号。
6、 根据权利要求 3所述的驱动方法, 其中, 在一个有效显示时间内, 所 述控制信号包括一个在先的起始脉冲信号和多个在后的时序脉冲信号。
7、 根据权利要求 2所述的驱动方法, 其中, 在一个有效显示时间内, 所 述控制信号包括一个在先的起始脉冲信号和多个在后的时序脉冲信号。
8、 根据权利要求 1所述的驱动方法, 其中, 在一个有效显示时间内, 所 述控制信号包括一个在先的起始脉冲信号和多个在后的时序脉冲信号。
9、 一种液晶面板驱动电路, 包括时序驱动芯片、 扫描线以及与扫描线耦 合的扫描驱动芯片, 其中, 所述时序驱动芯片将一控制信号传输到扫描驱动芯 片中, 所述控制信号包括:
起始脉冲信号: 所述起始脉冲信号具有从低电平上升到高电平的第一上升 沿和从高电平下降到低电平的第一下降沿;
时序脉冲信号: 所示时序脉冲信号具有从低电平上升到中间电平的第二上 升沿、 从中间电平上升到高电平的第三上升沿、 从高电平下降到中间电平的第 二下降沿以及从中间电平下降到低电平的第三下降沿。
10、 根据权利要求 9所述的驱动电路, 其中, 所述时序驱动芯片与扫描驱 动芯片之间仅有一根用于传输所述控制信号的走线。
11、 根据权利要求 10所述的驱动电路, 其中, 所述扫描驱动芯片内设有 一用于将所述控制信号转换为目标控制信号的解码模块, 所述扫描驱动芯片根 据目标控制信号输出用于驱动液晶面板的扫描驱动信号。
12、 根据权利要求 9所述的驱动电路, 其中, 所述扫描驱动芯片内设有一 用于将所述控制信号转换为目标控制信号的解码模块, 所述扫描驱动芯片根据 目标控制信号输出用于驱动液晶面板的扫描驱动信号。
13、 根据权利要求 12所述的驱动电路, 其中, 所述目标控制信号包括开 始脉冲信号、 时钟脉冲信号和使能控制信号。
14、 根据权利要求 13所述的驱动电路, 其中, 所述解码模块将所述起始 脉冲信号转换为开始脉冲信号; 将所述时序脉冲信号转换为时钟脉冲信号和使 能控制信号, 其中, 时钟脉冲信号的上升沿为时序脉冲信号的第三上升沿, 时 钟脉冲信号的下降沿为时序脉冲信号的第三下降沿; 使能控制信号的上升沿为 时序脉冲信号的第二上升沿,使能控制信号的下降沿为时序脉冲信号的第二下 降沿。
15、 根据权利要求 14所述的驱动电路, 其中, 在一个有效显示时间内, 所述控制信号包括一个在先的起始脉冲信号和多个在后的时序脉冲信号。
16、 根据权利要求 13所述的驱动电路, 其中, 在一个有效显示时间内, 所述控制信号包括一个在先的起始脉冲信号和多个在后的时序脉冲信号。
17、 根据权利要求 12所述的驱动电路, 其中, 在一个有效显示时间内, 所述控制信号包括一个在先的起始脉冲信号和多个在后的时序脉冲信号。
18、 根据权利要求 11 所述的驱动电路, 其中, 在一个有效显示时间内, 所述控制信号包括一个在先的起始脉冲信号和多个在后的时序脉冲信号。
19、 根据权利要求 10所述的驱动电路, 其中, 在一个有效显示时间内, 所述控制信号包括一个在先的起始脉冲信号和多个在后的时序脉冲信号。
20、 根据权利要求 9所述的驱动电路, 其中, 在一个有效显示时间内, 所 述控制信号包括一个在先的起始脉冲信号和多个在后的时序脉冲信号。
PCT/CN2014/070081 2013-12-30 2014-01-03 一种液晶面板的驱动方法及驱动电路 Ceased WO2015100728A1 (zh)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB1610683.3A GB2535943B (en) 2013-12-30 2014-01-03 Driving Method and Circuit for Liquid Crystal Display Panel
RU2016125806A RU2645289C2 (ru) 2013-12-30 2014-01-03 Способ возбуждения и управляющая схема для панели жидкокристаллического дисплея
DE112014006086.0T DE112014006086T5 (de) 2013-12-30 2014-01-03 Ansteuerverfahren und Ansteuerschaltung für ein Flüssigkristallbildschirmpanel
US14/234,148 US9236021B2 (en) 2013-12-30 2014-01-03 Driving method and circuit for liquid crystal display panel
JP2016540594A JP6219525B2 (ja) 2013-12-30 2014-01-03 液晶パネルの駆動方法及び駆動回路
KR1020167019892A KR101838831B1 (ko) 2013-12-30 2014-01-03 액정 패널의 구동방법 및 구동회로

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310747086.X 2013-12-30
CN201310747086.XA CN103745702B (zh) 2013-12-30 2013-12-30 一种液晶面板的驱动方法及驱动电路

Publications (1)

Publication Number Publication Date
WO2015100728A1 true WO2015100728A1 (zh) 2015-07-09

Family

ID=50502715

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2014/070081 Ceased WO2015100728A1 (zh) 2013-12-30 2014-01-03 一种液晶面板的驱动方法及驱动电路

Country Status (8)

Country Link
US (1) US9236021B2 (zh)
JP (1) JP6219525B2 (zh)
KR (1) KR101838831B1 (zh)
CN (1) CN103745702B (zh)
DE (1) DE112014006086T5 (zh)
GB (1) GB2535943B (zh)
RU (1) RU2645289C2 (zh)
WO (1) WO2015100728A1 (zh)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103956148B (zh) * 2014-05-20 2015-12-30 深圳市华星光电技术有限公司 显示装置的驱动方法及用于该方法的显示装置的电路结构
CN105390106B (zh) * 2015-12-07 2018-12-21 深圳市华星光电技术有限公司 薄膜晶体管液晶显示面板的电平转换电路及电平转换方法
CN105810169A (zh) * 2016-05-25 2016-07-27 深圳市华星光电技术有限公司 液晶显示器的驱动系统及驱动方法
CN118737004B (zh) * 2024-06-14 2025-06-03 灵犀视芯显示技术(深圳)有限公司 一种闸极控制信号侦测方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1527114A (zh) * 2003-03-04 2004-09-08 京东方显示器科技公司 驱动液晶显示装置的装置
US20050128175A1 (en) * 2003-12-11 2005-06-16 Hong Jin C. Apparatus and method of driving liquid crystal display device
WO2007108574A1 (en) * 2006-03-23 2007-09-27 Anapass Inc. Display, timing controller and data driver for transmitting serialized multi-level data signal
TW200816110A (en) * 2006-09-25 2008-04-01 Novatek Microelectronics Corp Display apparatus and transmission method of the control signals
CN101273394A (zh) * 2005-09-23 2008-09-24 安纳帕斯股份有限公司 利用时钟嵌入多电平信号的显示器、定时控制器以及列驱动器集成电路
KR20090052664A (ko) * 2007-11-21 2009-05-26 엘지디스플레이 주식회사 액정표시장치의 제어신호 전송회로 및 그 제어신호의전송방법
TW201009798A (en) * 2008-08-27 2010-03-01 Au Optronics Corp Control signal generation method of gate driver integrated circuit, gate driver integrated circuit and liquid crystal display device
CN102024431A (zh) * 2009-09-16 2011-04-20 北京京东方光电科技有限公司 Tft-lcd驱动电路

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100293523B1 (ko) * 1998-02-25 2001-09-17 구본준, 론 위라하디락사 액정표시장치
DE69917479T2 (de) * 1998-10-26 2005-06-02 Janez Pirs Ansteuerungsschema und elektronischer schaltkreis für ein elektooptisches lcd-schaltelement
JP3201603B1 (ja) 1999-06-30 2001-08-27 富士通株式会社 駆動装置、駆動方法およびプラズマディスプレイパネルの駆動回路
KR100339021B1 (ko) * 2000-07-27 2002-06-03 윤종용 평판 디스플레이 장치
JP4626933B2 (ja) * 2001-08-20 2011-02-09 パナソニック株式会社 マトリクス表示装置及びその駆動方法
EP1351213A1 (en) * 2002-03-28 2003-10-08 Mitron OY System and method for controlling a liquid crystal display and a liquid crystal display
TW583640B (en) * 2003-03-04 2004-04-11 Chunghwa Picture Tubes Ltd Display scan integrated circuit
JP2004309961A (ja) 2003-04-10 2004-11-04 Advanced Display Inc 液晶表示装置
KR100965598B1 (ko) * 2003-12-11 2010-06-23 엘지디스플레이 주식회사 액정표시장치의 구동장치 및 방법
KR100583318B1 (ko) * 2003-12-17 2006-05-25 엘지.필립스 엘시디 주식회사 액정표시장치의 게이트 구동장치 및 방법
KR20070012972A (ko) * 2005-07-25 2007-01-30 삼성전자주식회사 표시 장치, 그 구동 장치 및 방법
CN101868817B (zh) * 2007-11-20 2015-01-07 皇家飞利浦电子股份有限公司 节省功率的透射型显示器
KR101510879B1 (ko) * 2008-02-04 2015-04-10 엘지디스플레이 주식회사 표시장치
US9509525B2 (en) * 2008-09-05 2016-11-29 Ketra, Inc. Intelligent illumination device
US9276766B2 (en) * 2008-09-05 2016-03-01 Ketra, Inc. Display calibration systems and related methods
CN101354876B (zh) * 2008-09-11 2011-06-01 友达光电股份有限公司 栅极驱动集成电路及其控制信号产生方法及液晶显示器
JP2010256401A (ja) * 2009-04-21 2010-11-11 Renesas Electronics Corp ドライバ及び表示装置
CN102890923B (zh) * 2012-10-23 2016-03-09 深圳市华星光电技术有限公司 一种液晶面板的扫描驱动电路、液晶显示装置和驱动方法
CN102956217B (zh) * 2012-11-30 2015-04-22 深圳市华星光电技术有限公司 一种液晶面板的驱动方法、驱动电路和液晶显示装置
CN103345897B (zh) * 2013-06-20 2015-07-01 深圳市华星光电技术有限公司 主动矩阵显示装置、扫描驱动电路及其扫描驱动方法

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1527114A (zh) * 2003-03-04 2004-09-08 京东方显示器科技公司 驱动液晶显示装置的装置
US20050128175A1 (en) * 2003-12-11 2005-06-16 Hong Jin C. Apparatus and method of driving liquid crystal display device
CN101273394A (zh) * 2005-09-23 2008-09-24 安纳帕斯股份有限公司 利用时钟嵌入多电平信号的显示器、定时控制器以及列驱动器集成电路
WO2007108574A1 (en) * 2006-03-23 2007-09-27 Anapass Inc. Display, timing controller and data driver for transmitting serialized multi-level data signal
TW200816110A (en) * 2006-09-25 2008-04-01 Novatek Microelectronics Corp Display apparatus and transmission method of the control signals
KR20090052664A (ko) * 2007-11-21 2009-05-26 엘지디스플레이 주식회사 액정표시장치의 제어신호 전송회로 및 그 제어신호의전송방법
TW201009798A (en) * 2008-08-27 2010-03-01 Au Optronics Corp Control signal generation method of gate driver integrated circuit, gate driver integrated circuit and liquid crystal display device
CN102024431A (zh) * 2009-09-16 2011-04-20 北京京东方光电科技有限公司 Tft-lcd驱动电路

Also Published As

Publication number Publication date
KR20160100401A (ko) 2016-08-23
GB2535943A (en) 2016-08-31
US9236021B2 (en) 2016-01-12
US20150194113A1 (en) 2015-07-09
CN103745702B (zh) 2016-07-06
KR101838831B1 (ko) 2018-03-14
JP2017502340A (ja) 2017-01-19
JP6219525B2 (ja) 2017-10-25
GB201610683D0 (en) 2016-08-03
GB2535943B (en) 2020-11-18
CN103745702A (zh) 2014-04-23
RU2645289C2 (ru) 2018-02-19
DE112014006086T5 (de) 2016-09-08
RU2016125806A (ru) 2018-01-10

Similar Documents

Publication Publication Date Title
CN102479494B (zh) 液晶显示装置
US8269712B2 (en) High-reliability gate driving circuit
KR101521732B1 (ko) 게이트 구동 회로 및 방법, 및 액정 디스플레이
US8392775B2 (en) Shift register circuit
WO2014063335A1 (zh) 一种液晶面板的扫描驱动电路、液晶显示装置和驱动方法
EP3165998A1 (en) Transmit electrode scanning circuit, array substrate and display device
US20150154927A1 (en) Gate driver-on-array driving circuit and driving method
US20140375614A1 (en) Active matrix display, scanning driven circuit and the method thereof
US20170178560A1 (en) Gate driving circuit and display device using the same
WO2015100728A1 (zh) 一种液晶面板的驱动方法及驱动电路
KR20160004181A (ko) 네로우 베젤을 갖는 표시장치
CN102087839A (zh) 驱动液晶显示设备的装置和方法
EP3040977B1 (en) Display device
WO2021103140A1 (zh) 驱动电路
CN100356431C (zh) 驱动液晶显示装置的装置
CN110047448A (zh) 触摸面板控制装置、触摸面板控制方法及输入显示装置
WO2022199189A1 (zh) 栅极驱动模块、栅极控制信号的生成方法和显示装置
US8416182B2 (en) Apparatus and method for driving a liquid crystal display device for reducing ripple noise
CN100555401C (zh) 显示设备的控制信号产生电路及产生方法
KR102333734B1 (ko) 레벨 시프터 및 이를 구비한 평판표시장치
KR102118928B1 (ko) 액정표시장치
US20140111502A1 (en) Scan driving circuit of lcd panel, lcd device, and driving method
CN108898996B (zh) 栅极驱动单元的下拉电路及显示装置
CN102237048A (zh) 栅极波型产生方法及其电路
KR101777869B1 (ko) 액정표시장치와 그 구동방법

Legal Events

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

Ref document number: 14234148

Country of ref document: US

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

Ref document number: 14877528

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2016540594

Country of ref document: JP

Kind code of ref document: A

ENP Entry into the national phase

Ref document number: 201610683

Country of ref document: GB

Kind code of ref document: A

Free format text: PCT FILING DATE = 20140103

ENP Entry into the national phase

Ref document number: 2016125806

Country of ref document: RU

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 112014006086

Country of ref document: DE

ENP Entry into the national phase

Ref document number: 20167019892

Country of ref document: KR

Kind code of ref document: A

122 Ep: pct application non-entry in european phase

Ref document number: 14877528

Country of ref document: EP

Kind code of ref document: A1