WO2015096253A1 - 液晶显示面板的驱动系统架构及应用其的液晶显示器 - Google Patents

液晶显示面板的驱动系统架构及应用其的液晶显示器 Download PDF

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Publication number
WO2015096253A1
WO2015096253A1 PCT/CN2014/071087 CN2014071087W WO2015096253A1 WO 2015096253 A1 WO2015096253 A1 WO 2015096253A1 CN 2014071087 W CN2014071087 W CN 2014071087W WO 2015096253 A1 WO2015096253 A1 WO 2015096253A1
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Prior art keywords
circuit
gamma correction
correction buffer
programmable gamma
liquid crystal
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PCT/CN2014/071087
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English (en)
French (fr)
Inventor
许神贤
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深圳市华星光电技术有限公司
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Priority to US14/240,388 priority Critical patent/US20150177552A1/en
Publication of WO2015096253A1 publication Critical patent/WO2015096253A1/zh

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    • 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
    • G09G2300/00Aspects of the constitution of display devices
    • G09G2300/04Structural and physical details of display devices
    • G09G2300/0421Structural details of the set of electrodes
    • G09G2300/0426Layout of electrodes and connections
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00Control of display operating conditions
    • G09G2320/02Improving the quality of display appearance
    • G09G2320/0233Improving the luminance or brightness uniformity across the screen
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02Details of power systems and of start or stop of display operation
    • G09G2330/028Generation of voltages supplied to electrode drivers in a matrix display other than LCD

Definitions

  • the present invention relates to the field of liquid crystal displays, and more particularly to a drive system architecture of a liquid crystal display panel and a liquid crystal display using the same. Background technique
  • LCDs liquid crystal displays
  • Programmable gamma correction buffer circuit can automatically detect and adjust voltage by sensor and combined with software to improve the accuracy of voltage travel, and then adjust the color that is most suitable for ffl Reduced flicker, widely used in liquid crystal display products.
  • the P-Gamma IC is usually placed on a Control Board (C board), and the P-Gamma IC is supplied with a voltage via a Flexible Flat Cable (FFC).
  • C board Control Board
  • FFC Flexible Flat Cable
  • One of the technical problems to be solved by the present invention is to provide a driving system architecture of a liquid crystal display panel, which can reduce the shipping cost and reduce the problem of P-Gamma IC assembly errors.
  • a liquid crystal display to which the system architecture is applied is also provided.
  • the present invention provides a driving system rack hook of a liquid crystal display panel, comprising: at least two data driving circuits respectively corresponding to different circuit boards for providing data lines to the liquid crystal display panel a control panel connected to the plurality of circuit boards; a programmable gamma correction buffer circuit disposed in one of the plurality of circuit boards and electrically connected to a data driving circuit corresponding to the circuit board to It provides a reference voltage, and the programmable gamma correction buffer circuit provides a reference voltage to other data drive circuits through traces through the control panel and other boards.
  • a voltage dividing circuit is added to the trace of the programmable gamma correction buffer circuit to make the programmable gamma correction buffer circuit to each data driving circuit
  • the reference voltages provided are equal.
  • the compensation resistor is added to the trace of the programmable gamma correction buffer circuit, so that the programmable gamma correction circuit and The resistance values between the respective data driving circuits are equal, so that the reference voltages supplied from the programmable gamma correction buffer circuits to the respective data driving circuits are equal.
  • the circuit in which the programmable gamma correction buffer circuit is located A compensation resistor is added on the board such that the sum of the trace resistance and the compensation resistor on the circuit board is equal to the trace resistance of the programmable gamma correction buffer circuit and another data drive circuit.
  • the programmable gamma correction buffer circuit when the data driving circuit is an odd number, the programmable gamma correction buffer circuit is set at The data drive circuit in the middle position corresponds to the circuit board.
  • a liquid crystal display includes: a liquid crystal display panel; a driving system architecture, comprising: at least two data driving circuits respectively corresponding to different circuit boards for The liquid crystal display panel provides a data line voltage; a control panel connected to the plurality of circuit boards: a programmable gamma correction buffer circuit disposed on one of the plurality of circuit boards and data driven on the circuit board The circuit is electrically coupled to provide a reference voltage thereto, and the programmable gamma correction snubber circuit provides a reference voltage to other data drive circuits via traces of the control panel and other circuit boards.
  • a voltage dividing circuit is added to the trace of the programmable gamma correction buffer circuit, so that the programmable gamma correction buffer circuit provides each data driving circuit The reference voltages are equal.
  • the compensation resistor is added to the trace of the programmable gamma correction buffer circuit, so that the programmable gamma correction buffer circuit and The resistance values between the respective data driving circuits are equal, so that the reference voltages supplied from the programmable gamma correction buffer circuits to the respective data driving circuits are equal.
  • the programmable gamma correction buffer circuit when the data driving circuit is an odd number, the programmable gamma correction buffer circuit is set at The data drive circuit in the middle position corresponds to the circuit board.
  • One or more implementations of the present invention may have the following advantages over the prior art;
  • the present invention sets the P-Gamma 1C on the X board instead of the control panel, so that the client does not need to associate the P-Gamma IC with a specific control panel during assembly, thereby reducing shipping costs and reducing corresponding errors. risk.
  • the present invention further introduces a voltage dividing circuit, which generally uses the voltage value of the controlled source voltage terminal as a reference voltage, and is supplemented by other control circuit voltage dividing resistors, thereby improving the optical brightness bias caused by voltage inconsistency.
  • FIG. 1 is a schematic structural diagram of a drive system assembly connection of a liquid crystal display panel in the prior art
  • FIG. 2 is a schematic structural diagram of a driving system of a liquid crystal display panel according to an embodiment of the invention
  • FIG. 3 is a schematic structural diagram of a driving system of a liquid crystal display panel according to another embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION
  • FIG. 2 is a schematic diagram showing the architecture of a driving system of a liquid crystal display panel according to an embodiment of the present invention. The composition of the system architecture will be described below with reference to FIG.
  • the system architecture includes a control panel (C board), a programmable gamma correction buffer circuit (P-Gamma 1 C ), and at least two data driving circuits (Source ICs) corresponding to different boards.
  • C board control panel
  • P-Gamma 1 C programmable gamma correction buffer circuit
  • Source ICs data driving circuits
  • the data driving circuit is used for the liquid crystal display panel to provide the voltage of the TFT data line, and the P-Gamma lC is used to provide the reference voltage of the Source Driver IC.
  • Each X board is connected to the control panel via FFC.
  • P-Gamn C is not disposed on C boa d as in the prior art, but is disposed on one of a plurality of X boards.
  • the trace impedance of the P-Gamma IC and the data driving circuit 1 is schematically plotted: R_i and its trace impedance R2 with respect to the other data driving circuit 2.
  • the voltage provided by the P-Gamma IC is transmitted to the corresponding data drive circuit via, for example, FFC traces.
  • the P-Gamma 1C is disposed on one of the plurality of circuit boards and is electrically connected to the data driving circuit 1 corresponding to the circuit board to supply a reference voltage thereto, and the P-Gamma IC passes through the control panel and the other The traces of the board provide a reference voltage to another data drive circuit (Source IC 2 ).
  • the liquid crystal display panel since the P-Gamma: C is disposed on the X board instead of the C board, the liquid crystal display panel has already set the corresponding parameters before leaving the factory, and does not need to be updated after the shipment, and makes the customer It is not necessary to assemble the P-Gamma C for a specific C board during post-assembly, which can reduce the shipping cost and reduce the risk of corresponding errors.
  • the present invention also provides another embodiment, as shown in FIG. It is an improvement based on Fig. 2, and the same portions as those of Fig. 2 will not be described again, and only the differences from Fig. 2 will be described in detail.
  • the compensation resistor Rc is added to the trace on the X board where the P-Gamma IC is placed, so that the trace impedance of the Gamma IC to each data driving circuit is equal.
  • the present invention also provides a liquid crystal display comprising the above described drive system architecture.
  • the present invention sets the P-Gamma 1C on the X board instead of the control panel, so that the client does not need to associate the P-Gamma C with a specific control panel, thereby reducing shipping costs and reducing corresponding errors. risks of.
  • the present invention further introduces a voltage dividing circuit, which generally uses the voltage of the controlled source voltage terminal as the reference voltage, and is supplemented by other control circuit voltage dividing resistors, thereby improving the optical brightness deviation caused by the voltage inconsistency.

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

Abstract

 一种液晶显示面板的驱动系统架构及应用其的液晶显示器,该驱动系统架构包括:至少两个数据驱动电路,分别对应不同的电路板,用于向所述液晶显示面板提供资料线电压;与多个所述电路板连接的控制面板;一可编程伽马校正缓冲电路,其设置在所述多个电路板的其中之一且与对应该电路板的数据驱动电路电连接以向其提供参考电压,并且所述可编程伽马校正缓冲电路通过经由所述控制面板和其他电路板的走线向其他数据驱动电路提供参考电压。通过将P-Gama IC设置在X board而非控制面板上,使得客户端在组装时不需要将P-Gama IC对应特定控制面板,进而减少出货成本且降低对应错误的风险。

Description

液晶显示面板的驱动系统架构及应用其的液晶显示器
技术领域
本发明涉及液晶显示器领域, 尤其涉及一种液晶显示面板的驱动系统架构及引用其 的液晶显示器。 背景技术
近年来, 随着薄型化的显示趋势, 液晶显示器 (Liquid Crystal Display, 简称: LCD ) 已广泛使用在各种电子产品的应用中, 例如手机、 笔记本计算机以及彩色电视机等。
可编程伽马校正缓冲电路 (P Gamma IC ) 因可藉由感器测并结合软体来自动侦测及 调节电压, 提升电压行进过程中的精准度, 进而调整最适合使 ffl者的色彩并且能降低闪 烁度, 在液晶显示器产品中被广泛应用。
一般, 在高解析度的面板上, P- Gamma IC通常会放至在控制面板 (Control Board, 简称 C board) 上, 经由柔性扁平电缆 ( Flexible Flat Cable , 简称 FFC ) 将 P- Gamma IC 提供电压到数据驱动电路 (Source Driver IC ) 的电路板 X boari上, 具体如图 i所示。
然而在出货给客户时, 会将爾有 X board的面板和 C board分开出货, 这样会出现以 T问题: 有些面板厂商会针对不同面板去更新 P-Gamma IC的电压, 所以每片 C board就 必需调整对应的面板, 因而造成出货成本增加 ϋ也增加对 P-Gamma IC 组装对应错误面 板的风险。
因此, 如何解决上述 1¾]题, 以降低出货成本且减少 P- Gamma C 组装错误的问题, 乃业界所致力的课题之 -。 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的驱动系统架构, 其 能够降低出货成本旦减少 P- Gamma IC组装错误的问题。 另外, 还提供了一种应用该系统 架构的液晶显示器。 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的驱动系统架钩, 包 括: 至少两个数据驱动电路, 分别对应不同的电路板, 用于向所述液晶显示面板提供资 料线电压; 与多个所述电路板连接的控制面板; 一可编程伽马校正缓冲电路, 其设置在 所述多个电路板的其中之一且与对应该电路板的数据驱动电路电连接以向其提供参考电 压, 并 ϋ所述可编程伽马校正缓冲电路通过经由所述控制面板和其他电路板的走线向其 他数据驱动电路提供参考电压。
2) 在本发明的第 1 ) 项的 ·个优选实施方式中, 在所述可编程伽马校正缓冲电路的 走线上增设分压电路, 使得可编程伽马校正缓冲电路向各个数据驱动电路提供的参考电 压相等。
3 )在本发明的第 1 )项或第 2)项中的一个优选实施方式中, 在所述可编程伽马校正 缓冲电路的走线上增设补偿电阻, 使得可编程伽马校正缓 电路与各个数据驱动电路之 间的电阻值相等, 进而使得可编程伽马校正缓冲电路向各个数据驱动电路提供的参考电 压相等。
4) 在本发明的第 1 ) 项-第 3 ) 项中任一项的一个优选实施方式中, 在所述数据驱动 电路为两个时, 在所述可编程伽马校正缓冲电路所在的电路板上增设补偿电阻, 使得该 电路板上的走线电阻与 偿电阻的和等于该可编程伽马校正缓冲电路与另一数据驱动电 路的走线电阻》
5 ) 在本发明的第 1 ) 项-第 4) 项中任一项的一个优选实施方式中, 在所述数据驱动 电路为奇数个时, 所述可编程伽马校正缓冲电路被设置在处于中间位置的数据驱动电路 所对应的电路板上。
6) 根据本发明的另一方面, 还提供了一种液晶显示器, 包括: 液晶显示面板; 驱动 系统架构, 其包括: 至少两个数据驱动电路, 分别对应不同的电路板, 用于向所述液晶 显示面板提供资料线电压; 与多个所述电路板连接的控制面板: 一可编程伽马校正缓冲 电路, 其设置在所述多个电路板的其中之一 与对该电路板的数据驱动电路电连接以向 其提供参考电压, 并旦所述可编程伽马校正缓冲电路通过经 ffl所述控制面板和其他电路 板的走线向其他数据驱动电路提供参考电压。
7) 在本发明的第 6) 项的一个优选实施方式中, 在所述可编程伽马校正缓冲电路的 走线上增设分压电路, 使得可编程伽马校正缓冲电路向各个数据驱动电路提供的参考电 压相等。 8)在本发明的第 6)项或第 7)项中的一个优选实施方式中, 在所述可编程伽马校正 缓冲电路的走线上增设 偿电阻, 使得可编程伽马校正缓冲电路与各个数据驱动电路之 间的电阻值相等, 进而使得可编程伽马校正缓冲电路向各个数据驱动电路提供的参考电 压相等。
9) 在本发明的第 6) 项-第 8) 项中任一项的一个优选实施方式中, 在所述数据驱动 电路为两个时, 在所述可编程伽马校正缓冲电路所在的电路板上增设补偿电阻, 使得该 电路板上的走线电阻与 偿电阻的和等干该可编程伽马校正缓冲电路与另一数据驱动电 路的走线电阻。
10)在本发明的第 6)项-第 9)项中任一项的一个优选实施方式中, 在所述数据驱动 电路为奇数个时, 所述可编程伽马校正缓冲电路被设置在处于中间位置的数据驱动电路 所对应的电路板上。 与现有技术相比, 本发明的一个或多个实施 ^可以具有如下优点;
综上所述, 本发明通过将 P- Gamma 1C设置在 X board而非控制面板上, 使得客户端 在组装 不需要将 P-Gamma IC 对应特定控制面板, 进而减少出货成本且降低对应错误 的风险。 另外, 本发明又引入了分压电路, 总体以所控源电压端电压值较低者为参考电 压, 辅以其他控制线路分压电阻来实现, 进而来改善电压不一致所造成的光学亮度偏 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 ^、 权 利要求 ^以及^图中所特别指出的结构来实现和获得。 附图说明
^图用来提供对本发明的进一步理解, 并旦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。 在跗图中:
图 i是现有技术中液晶显示面板的驱动系统组装连接的架构示意图;
图 2是根据本发明一实施例的液晶显示面板的驱动系统架构示意图;
图 3是根据本发明另一实施例的液晶显示面板的驱动系统架构示意图。 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 ^图对本发明作进一步地 详细说明。
图 2 是根据本发明一实施例的液晶显示面板的驱动系统架构示意图, 下面参考图 2 来说明该系统架构的组成。
如图 2 所示, 该系统架构包括一控制面板 (C board ) 、 可编程伽马校正缓冲电路 ( P-Gamma 1 C ) 以及至少两个数据驱动电路 (Source IC ) , 分别对应不同的电路板 (X board) , 为了方便绘制和说明, 在图 2中仅包含 2个: X board, 容易理解, 其仅为一个示 倒, 不对 X board的个数进行任何限定。
其中, 数据驱动电路用来 ^液晶显示面板提供 TFT资料线的电压, P-Gamma lC用来 提供 Source Driver IC的参考电压。 各个 X board分别通过 FFC与控制面板连接。
在图 2中可以看出, P- Gamn : C没有像现有技术那样设置在 C boa d上, 而是设置 在多个 X board的其中之一。 并且, 示意性地绘制了该 P- Gamma IC与数据驱动电路 1的 走线阻抗 :R_i以及其与另一数据驱动电路 2的走线阻抗 R2。 P- Gamma IC所提供的电压经 由例如 FFC走线被传输到相应的数据驱动电路上。 也就是说, P-Gamma 1C设置在多个电 路板的其中之一且与对应该电路板的数据驱动电路 1 电连接以向其提供参考电压, 并且 P-Gamma IC通过经由控制面板和另一电路板的走线向另一数据驱动电路 (Source IC 2 ) 提供参考电压。
根据以上连接架构, 由于将 P- Gamma : C设置在 X board上而不是 C board上, 使得 液晶显示面板出厂前就已经设定好相应的参数,在出 Γ后不需要进行更新,并且使得客户 在后期组装时不需要将 P- Gamma C 对应特定 C board进行组装, 这样就可以减少出货成 本并降低对应错误的风险。
本发明还提供了另一实施例, 具体如图 3所示。 其是在图 2的基础上进行的改进, 与 图 2相同的部分在此不再赘述, 仅详细说明与图 2的区别点。
在该实施倒中, 在 P- Gamma IC所处的 X board上的走线上增加了补偿电阻 Rc, 使得 该 Gamma IC至各数据驱动电路的走线阻抗相等。
如图 3所示, 为方便描述, 仅绘制了在其中一个 X board上的线路阻抗 R1上和另一 个 X board上的线路阻抗 R2。 而且, 在线路阻抗 R1上还串联增加一补偿电阻 Rc , 使得 Ri÷ Rc=R2。 由于: P- Gamma IC到各个数据驱动电路的走线阻抗相同, 因此使得传输的参 考电压 V1 V2 , 进而改善了电压不一致所造成的光学亮度偏差。 也就是说, 通过在 P- Gamma IC的走线上增设补偿电阻, 使得 P- Gamma IC与各个数据驱动电路之间的电阻 值相等, 进而使得 P- Gamma IC向各个数据驱动电路提供的参考电压相等。 当然以上补偿电阻仅是一个例子, 可以采用其他形式的分压电路进行分压, 使得 P- Gamma 1C向各个数据驱动电路提供的参考电压值相同。 另外,在数据驱动电路为奇数个时,可编程伽马校正缓冲电路被设置在处于中间位置 的数据驱动电路所对应的电路板上。 这样,在设置补偿电阻时,不需要设定过多的补偿电 阻, 在电路上能够节省成本和损耗。 另外, 本发明还提供了一种液晶显示器, 其包括上述的驱动系统架构。
综上所述, 本发明通过将 P- Gamma 1C设置在 X board而非控制面板上, 使得客户端 在组装 ^不需要将 P- Gamma C 对应特定控制面板, 进而减少出货成本且降低对应错误 的风险。 另外, 本发明又引入了分压电路, 总体以所控源电压端电压值较低者为参考电 压, 辅以其他控制线路分压电阻来实现, 进而来改善电压不一致所造成的光学亮度偏
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 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圈之内。 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

权利要求书
1、 一种液晶显示面板的驱动系统架构, 其中, 包括:
至少两个数据驱动电路,分别对应不同的电路板.,用于向所述液晶显示面板提供资料 线电压;
与多个所述电路板连接的控制面板- 一-可编程伽马校正缓冲电路,其设置在所述多个电路板的其中之一且与对应该电路板 的数据驱动电路电连接以向其提供参考电压,并且所述可编程伽马校正缓冲电路通过经由 所述控制面板和其他电路板的走线^其他数据驱动电路提供参考电压。
2、 根据权利要求〗所述的驱动系统架构, 其中,
在所述可编程伽马校正缓冲电路的走线上增设分压电路,使得可编程伽马校正缓冲电 路「 各个数据驱动电路提供的参考电压相等。
3、 根据权利要求 2所述的驱动系统架构, 其中,
在所述可编程伽马校正缓冲电路的走线上增设 偿电阻,使得可编程伽马校正缓冲电 路与各个数据驱动电路之间的电阻值相等,进而使得可编程伽马校正缓冲电路向各个数据 驱动电路提供的参考电压相等。
4、 根据权利要求 3所述的驱动系统架构, 其中,
在所述数据驱动电路为两个时,
在所述可编程伽马校正缓冲电路所在的电路板上增设补偿电阻,使得该电路板上的走 线电阻与补偿电阻的和等于该可编程伽马校正缓冲电路与另一数据驱动电路的走线电阻。
5、 根据权利要求 1所述的驱动系统架构, 其中,
在所述数据驱动电路为奇数个^,
所述可编程伽马校正缓冲电路被设置在处于中间位置的数据驱动电路所对应的电路 板上。
6、 一种液晶显示器, 包括:
液晶显示面板;
驱动系统架构, 其包括- 至少两个数据驱动电路,分别对应不同的电路板,用于向所述液晶显示面板提供资料 线电压;
与多个所述电路板连接的控制面板;
一可编程伽马校正缓冲电路,其设置在所述多个电路板的其中之一且与对应该电路板 的数据驱动电路电连接以向其提供参考电压,并且所述可编程伽马校正缓冲电路通过经由 所述控制面板和其他电路板的走线^其他数据驱动电路提供参考电压。
7、 根据权利要求 6所述的液晶显示器, 其中,
在所述可编程伽马校正缓冲电路的走线上增设分压电路,使得可编程伽马校正缓冲电 路向各个数据驱动电路提供的参考电压相等。
8、 根据权利要求 7所述的液晶显示器, 其中,
在所述可编程伽马校正缓冲电路的走线上增设 偿电阻,使得可编程伽马校正缓冲电 路与各个数据驱动电路之间的电阻值相等,进而使得可编程伽马校正缓冲电路向各个数据 驱动电路提供的参考电压相等。
9、 根据权利要求 8所述的液晶显示器, 其中,
在所述数据驱动电路为两个时,
在所述可编程伽马校正缓冲电路所在的电路板上增设补偿电阻,使得该电路板上的走 线电阻与补偿电阻的和等于该可编程伽马校正缓冲电路与另一数据驱动电路的走线电阻。
10、 根据权利要求 6所述的液晶显示器, 其中,
在所述数据驱动电路为奇数个^,
所述可编程伽马校正缓冲电路被设置在处于中间位置的数据驱动电路所对应的电路 板上。
PCT/CN2014/071087 2013-12-25 2014-01-22 液晶显示面板的驱动系统架构及应用其的液晶显示器 WO2015096253A1 (zh)

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