WO2014043893A1 - 降低ic误动作的驱动电路及液晶显示面板 - Google Patents

降低ic误动作的驱动电路及液晶显示面板 Download PDF

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Publication number
WO2014043893A1
WO2014043893A1 PCT/CN2012/081759 CN2012081759W WO2014043893A1 WO 2014043893 A1 WO2014043893 A1 WO 2014043893A1 CN 2012081759 W CN2012081759 W CN 2012081759W WO 2014043893 A1 WO2014043893 A1 WO 2014043893A1
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WIPO (PCT)
Prior art keywords
negative feedback
array
driving chip
feedback module
signal
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PCT/CN2012/081759
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English (en)
French (fr)
Inventor
王金杰
陈政鸿
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TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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Priority to DE112012006823.8T priority Critical patent/DE112012006823T5/de
Priority to US13/700,488 priority patent/US8963899B2/en
Publication of WO2014043893A1 publication Critical patent/WO2014043893A1/zh
Anticipated expiration legal-status Critical
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    • 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
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/12—Test circuits or failure detection circuits included in a display system, as permanent part thereof

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a driving circuit and a liquid crystal display panel for reducing IC malfunction.
  • the liquid crystal display panel includes a TFT (Thin Film Transistor) substrate and a CF (Color) Filter, color filter) substrate in which an ITO (Indium Tin) is disposed on the CF substrate Oxide, tin-doped indium oxide) transparent conductive film.
  • a data driver chip (Source driver IC) and a scan driver chip (Gate driver) are disposed on the TFT substrate.
  • IC Signal transmission is realized between the data driving chip and the scanning driving chip through a wire on array (WOA) line provided on the TFT substrate.
  • the potential of the ITO transparent conductive film on the CF substrate usually changes, and the potential change of the ITO transparent conductive film causes the potential of the WOA line to fluctuate. Since the scan driver chip is affected by the voltage of the WOA line, variations in the potential of the WOA line tend to cause the scan driver chip to malfunction and cause the screen display to be abnormal.
  • the technical problem to be solved by the present invention is to provide a driving circuit and a liquid crystal display panel for reducing the malfunction of the IC, which can eliminate the phenomenon that the scanning driving chip generates a malfunction due to the potential fluctuation of the array wiring, thereby improving the liquid crystal display panel. Display quality.
  • a technical solution adopted by the present invention is to provide a driving circuit for reducing IC malfunction, which includes a data driving chip, a scanning driving chip, and an array wiring, wherein the data driving chip and the scanning driving chip are The data driving chip provides driving signals to the scan driving chip through the array traces, and the driving circuit further includes a negative feedback module, and the negative feedback module is electrically connected to the array traces, so that the potential of the array traces is kept constant; Wherein, the input end of the negative feedback module is electrically connected to the array trace near the scan driver chip to extract the input scan drive chip signal from the array trace as the input signal of the negative feedback module; the output terminal of the negative feedback module is electrically connected to the array The line is adjacent to the data driving chip to feed the output signal of the negative feedback module into the array trace; the negative feedback module includes a comparison unit, an amplifying unit and a feedback unit that are electrically connected.
  • the comparison unit extracts the input signal of the negative feedback module, and compares the input signal with the feedback signal provided by the feedback unit to obtain a difference signal; the amplification unit receives the difference signal and amplifies the difference signal and outputs the difference signal to the array trace.
  • the negative feedback module includes a voltage series negative feedback circuit, a voltage parallel negative feedback circuit, a current series negative feedback circuit or a current parallel negative feedback circuit.
  • a driving circuit for reducing IC malfunction which includes a data driving chip, a scan driving chip, and an array trace, wherein the data driving chip and the scan driving chip
  • the data driving chip provides driving signals to the scan driving chip through the array traces
  • the driving circuit further includes a negative feedback module, and the negative feedback module is electrically connected to the array traces, so that the potential of the array traces is kept constant.
  • the input end of the negative feedback module is electrically connected to the array trace near the scan driver chip to extract the signal input to the scan driver chip from the array trace as an input signal of the negative feedback module.
  • the output end of the negative feedback module is electrically connected to the array trace near the data driving chip to feed the output signal of the negative feedback module into the array trace.
  • the negative feedback module includes a comparison unit, an amplification unit, and a feedback unit that are electrically connected.
  • the comparison unit extracts the input signal of the negative feedback module from the array trace near the scan driver chip, and compares the input signal with the feedback signal provided by the feedback unit to obtain a difference signal; the amplification unit receives the difference signal and the difference value The signal is amplified and output to the array trace near the data driver chip.
  • the negative feedback module includes a voltage series negative feedback circuit, a voltage parallel negative feedback circuit, a current series negative feedback circuit or a current parallel negative feedback circuit.
  • a liquid crystal display panel including an array substrate and a color filter substrate, wherein a driving circuit for reducing IC malfunction is disposed on the array substrate.
  • the driving circuit comprises a data driving chip, a scan driving chip and an array trace. wherein the data driving chip and the scan driving chip are electrically connected by an array trace, and the data driving chip supplies a driving signal to the scan driving chip through the array trace, and drives the driving circuit.
  • the circuit further includes a negative feedback module electrically coupled to the array traces such that the potential of the array traces remains constant.
  • the input end of the negative feedback module is electrically connected to the array trace near the scan driver chip to extract the signal input to the scan driver chip from the array trace as an input signal of the negative feedback module.
  • the output end of the negative feedback module is electrically connected to the array trace near the data driving chip to feed the output signal of the negative feedback module into the array trace.
  • the negative feedback module includes a comparison unit, an amplification unit, and a feedback unit that are electrically connected.
  • the comparison unit extracts the input signal of the negative feedback module from the array trace near the scan driver chip, and compares the input signal with the feedback signal provided by the feedback unit to obtain a difference signal; the amplification unit receives the difference signal and the difference value The signal is amplified and output to the array trace near the data driver chip.
  • the negative feedback module includes a voltage series negative feedback circuit, a voltage parallel negative feedback circuit, a current series negative feedback circuit or a current parallel negative feedback circuit.
  • the invention has the beneficial effects that: in contrast to the prior art, the present invention controls the potential of the array traces by using a negative feedback module electrically connected to the array traces, so that the potential of the array traces is made. Since it is kept constant, the scan driver chip is prevented from malfunction due to the potential fluctuation of the array trace, thereby improving the display quality of the liquid crystal display panel.
  • FIG. 1 is a schematic structural view of an embodiment of a driving circuit for reducing IC malfunction according to the present invention
  • FIG. 2 is a circuit diagram of a specific embodiment of the negative feedback module shown in FIG. 1;
  • FIG. 3 is a schematic structural view of an embodiment of a liquid crystal display panel of the present invention.
  • FIG. 1 is a schematic structural diagram of an embodiment of a driving circuit for reducing IC malfunction.
  • the driving circuit 100 of the present invention includes a data driving chip 101, a scanning driving chip 102, and an array. Line 103 and negative feedback module 104.
  • the data driving chip 101 and the scan driving chip 102 are electrically connected through the array traces 103, so that the data driving chip 101 can provide driving signals to the scan driving chip 102 through the array traces 103.
  • the negative feedback module 104 is electrically connected to the array trace 103, and the specific connection is:
  • the input of the negative feedback module 104 is electrically connected to the array trace 103 near the scan driver chip 102 to extract the signal input to the scan driver chip 102 from the array trace 103 as the input signal Xi of the negative feedback module 104.
  • the output of the negative feedback module 104 is electrically connected to the array trace 103 near the data driving chip 101 to feed the output signal X0 of the negative feedback module 104 into the array trace 103. Therefore, the potential of the array trace 103 is controlled by the negative feedback module 104 such that the potential of the array trace 103 remains constant.
  • the negative feedback module 104 includes a comparison unit 141, an amplification unit 142, and a feedback unit 143 that are electrically connected.
  • the comparison unit 141 extracts the input signal Xi of the negative feedback module 104 from the array trace 103 near the scan driver chip 102, and compares the input signal Xi with the feedback signal Xf provided by the feedback unit 143 to obtain a difference signal Xd, which is amplified.
  • the unit 142 receives the difference signal Xd and amplifies the difference signal Xd to form an output signal X0, and outputs it to the array trace 103 near the data driving chip 101.
  • the feedback signal Xf provided by the feedback unit 143 is extracted from the output signal X0.
  • FIG. 2 is a circuit diagram of a specific embodiment of the negative feedback module shown in FIG. 1.
  • the negative feedback module 104 in this embodiment is specifically a voltage series negative feedback circuit, which includes an integrated operational amplifier 140, a feedback unit 143, and an output resistor 144.
  • the integrated operational amplifier 140 includes a comparison unit 141 and an amplification unit 142 shown in FIG. And the forward input terminal of the integrated operational amplifier 140 is electrically connected to the array trace 103 near the scan driver chip 102, and the negative input terminal of the integrated operational amplifier 140 is electrically connected to the feedback unit 143.
  • the feedback unit 143 includes a resistor 1431 and a resistor 1432. Moreover, one end of the resistor 1431 and one end of the resistor 1432 are electrically connected to the negative input terminal of the integrated operational amplifier 140, the other end of the resistor 1431 is grounded, and the other end of the resistor 1432 is electrically connected to the output terminal of the integrated operational amplifier 140.
  • the output of the integrated operational amplifier 140 is further electrically coupled to the array trace 103 near the data drive chip 101 and the output resistor 144, and the output resistor 144 is used to form the output voltage signal U0.
  • the integrated operational amplifier 140 extracts the input voltage signal Ui of the negative feedback module 104 from the array trace 103 near the scan driver chip 102.
  • the resistor 1431 and the resistor 1432 in the feedback unit 143 extract a portion of the output voltage signal U0 of the integrated operational amplifier 140 as the feedback voltage signal Uf, and the input voltage signal Ui and the feedback voltage signal Uf are compared in the integrated operational amplifier 140 to obtain a difference voltage signal. Ud.
  • the integrated operational amplifier 140 amplifies the differential voltage signal Ud and outputs it to obtain an output voltage U0.
  • the output voltage signal U0 controls the potential on the array trace 103 near the data driving chip 101, so that the potential on the array trace 103 is constant, thereby ensuring that the data driving chip 101 supplies a normal driving signal to the scan driving chip 102, thereby reducing the The malfunction of the scan driver chip 102 is scanned.
  • the negative feedback module 104 may specifically be a voltage parallel negative feedback circuit, a current series negative feedback circuit, or a current parallel negative feedback circuit.
  • FIG. 3 is a schematic structural diagram of an embodiment of a liquid crystal display panel having the foregoing driving circuit for reducing IC malfunction.
  • the liquid crystal display panel 300 of the present invention includes an array substrate 301 and a color filter substrate 302 which are disposed opposite to each other.
  • the color filter substrate 302 is provided with a whole ITO transparent conductive film, wherein the area of the ITO transparent conductive film is equal to the area of the array substrate 301.
  • the array substrate 301 is provided with a driving circuit for reducing IC malfunction as shown in FIG. 1.
  • the driving circuit includes a data driving chip 101, a scanning driving chip 102, an array wiring 103, and a negative feedback module 104.
  • the data driving chip 101 and the scan driving chip 102 are electrically connected through the array traces 103, so that the data driving chip 101 supplies driving signals to the scan driving chip 102 through the array traces 103.
  • the data driving chip 101 further includes a plurality of data lines S1, S2, and S3, and the capacitor structures 303, 304 are formed between the data lines S1, S2, and S3 and the ITO transparent conductive film of the color filter substrate 302. 305.
  • a capacitor structure 306 is also formed between the ITO transparent conductive film of the color filter substrate 302 and the array traces 103.
  • the negative feedback module 104 has the same structure as the negative feedback module in the driving circuit for reducing the malfunction of the IC shown in FIG. 1, and the specific structure thereof will not be described herein.
  • the specific working process of the liquid crystal display panel 300 of the present invention is as follows:
  • the data lines S1, S2, and S3 in the array substrate 301 simultaneously transmit signals, so that the potential of the ITO transparent conductive film on the color filter substrate 302 is easily transmitted by the data lines S1, S2, and S3.
  • the influence of the signal produces fluctuations.
  • the potential change of the ITO transparent conductive film on the color filter substrate 302 causes the potential of the array trace 103 to fluctuate.
  • the comparison unit 141 extracts the unstable voltage signal input to the scan driving chip 102 from the array trace 103 near the scan driving chip 102 as the input voltage signal of the negative feedback module 104, and inputs the input voltage signal and the feedback voltage signal provided by the feedback unit 143. Comparing to obtain a difference voltage signal, the amplifying unit 142 receives the difference voltage signal and amplifies the difference voltage signal to form an output voltage signal, and outputs the output voltage signal to the array trace 103 near the data driving chip 101 to control the array trace 103. The potential on it. The feedback voltage signal provided by the feedback unit 143 is extracted from the output voltage signal.
  • the potential on the array trace 103 is controlled by the negative feedback module 104, so that the potential of the array trace 103 is kept constant, thereby reducing the malfunction of the scan driving chip 102, and improving the liquid crystal display panel 300. Display quality.
  • the present invention provides a negative feedback module electrically connected to the array trace for extracting a voltage signal on the array trace adjacent to the scan driver chip and a feedback voltage signal extracted from the output of the negative feedback module. Compare and adjust, and finally transfer to the array trace near the data driver chip to control the potential on the array trace, so that the potential of the array trace remains constant. Therefore, the malfunction of the scan driver chip due to the potential fluctuation of the array trace is reduced, thereby improving the display quality of the liquid crystal display panel.

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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)

Description

降低IC误动作的驱动电路及液晶显示面板
【技术领域】
本发明涉及显示技术领域，特别是涉及一种降低IC误动作的驱动电路及液晶显示面板。
【背景技术】
液晶显示面板包括TFT（Thin Film Transistor，薄膜场效应晶体管)基板以及CF（Color Filter，彩色滤光片）基板，其中，CF基板上设置有一ITO（Indium Tin Oxide，掺锡氧化铟）透明导电膜。TFT基板上设置有数据驱动芯片(Source driver IC)和扫描驱动芯片（Gate driver IC）。数据驱动芯片和扫描驱动芯片之间通过设置在TFT基板上的阵列走线(Wire on array，WOA)线路实现信号传输。
但是，在液晶显示面板显示时，CF基板上的ITO透明导电膜的电位通常会变化，而ITO透明导电膜的电位变化又使得WOA线路的电位产生变动。由于扫描驱动芯片会受WOA线路的电压影响，因此WOA线路的电位产生变动易于使扫描驱动芯片产生误动作而导致画面显示异常。
【发明内容】
本发明主要解决的技术问题是提供一种降低IC误动作的驱动电路及液晶显示面板，能够消除因阵列走线的电位波动而引起扫描驱动芯片产生误动作的现象，从而提高了液晶显示面板的显示品质。
为解决上述技术问题，本发明采用的一个技术方案是：提供一种降低IC误动作的驱动电路，其包括数据驱动芯片、扫描驱动芯片以及阵列走线，其中，数据驱动芯片和扫描驱动芯片之间通过阵列走线电连接，数据驱动芯片通过阵列走线向扫描驱动芯片提供驱动信号，驱动电路进一步包括负反馈模块，负反馈模块电连接于阵列走线，使得阵列走线的电位保持恒定；其中，负反馈模块的输入端电连接阵列走线靠近扫描驱动芯片处，以从阵列走线上提取输入扫描驱动芯片的信号作为负反馈模块的输入信号；负反馈模块的输出端电连接阵列走线靠近数据驱动芯片处，以将负反馈模块的输出信号送入至阵列走线中；负反馈模块包括电连接的比较单元、放大单元以及反馈单元。
其中，比较单元提取负反馈模块的输入信号，并将输入信号与反馈单元提供的反馈信号进行比较得到差值信号；放大单元接收差值信号并将差值信号放大之后输出至阵列走线上。
其中，负反馈模块包括电压串联负反馈电路、电压并联负反馈电路、电流串联负反馈电路或者电流并联负反馈电路。
为解决上述技术问题，本发明采用的另一个技术方案是：提供一种降低IC误动作的驱动电路，其包括数据驱动芯片、扫描驱动芯片以及阵列走线，其中，数据驱动芯片和扫描驱动芯片之间通过阵列走线电连接，数据驱动芯片通过阵列走线向扫描驱动芯片提供驱动信号，驱动电路进一步包括负反馈模块，负反馈模块电连接于阵列走线，使得阵列走线的电位保持恒定。
其中，负反馈模块的输入端电连接阵列走线靠近扫描驱动芯片处，以从阵列走线上提取输入扫描驱动芯片的信号作为负反馈模块的输入信号。
其中，负反馈模块的输出端电连接阵列走线靠近数据驱动芯片处，以将负反馈模块的输出信号送入至阵列走线中。
其中，负反馈模块包括电连接的比较单元、放大单元以及反馈单元。
其中，比较单元从阵列走线上靠近扫描驱动芯片处提取负反馈模块的输入信号，并将输入信号与反馈单元提供的反馈信号进行比较得到差值信号；放大单元接收差值信号并将差值信号放大之后输出至阵列走线上靠近数据驱动芯片处。
其中，负反馈模块包括电压串联负反馈电路、电压并联负反馈电路、电流串联负反馈电路或者电流并联负反馈电路。
为解决上述技术问题，本发明采用的另一个技术方案是：提供一种液晶显示面板，其包括阵列基板以及彩色滤光片基板，其中在阵列基板上设置一种降低IC误动作的驱动电路，该驱动电路包括数据驱动芯片、扫描驱动芯片以及阵列走线，其中，数据驱动芯片和扫描驱动芯片之间通过阵列走线电连接，数据驱动芯片通过阵列走线向扫描驱动芯片提供驱动信号，驱动电路进一步包括负反馈模块，负反馈模块电连接于阵列走线，使得阵列走线的电位保持恒定。
其中，负反馈模块的输入端电连接阵列走线靠近扫描驱动芯片处，以从阵列走线上提取输入扫描驱动芯片的信号作为负反馈模块的输入信号。
其中，负反馈模块的输出端电连接阵列走线靠近数据驱动芯片处，以将负反馈模块的输出信号送入至阵列走线中。
其中，负反馈模块包括电连接的比较单元、放大单元以及反馈单元。
其中，比较单元从阵列走线上靠近扫描驱动芯片处提取负反馈模块的输入信号，并将输入信号与反馈单元提供的反馈信号进行比较得到差值信号；放大单元接收差值信号并将差值信号放大之后输出至阵列走线上靠近数据驱动芯片处。
其中，负反馈模块包括电压串联负反馈电路、电压并联负反馈电路、电流串联负反馈电路或者电流并联负反馈电路。
本发明的有益效果是：区别于现有技术的情况，本发明通过设置一电连接于阵列走线上的负反馈模块，利用负反馈模块控制阵列走线上的电位，使得阵列走线的电位保持恒定，因此降低扫描驱动芯片因阵列走线的电位波动而引起的误动作，进而提高了液晶显示面板的显示品质。
【附图说明】
图1是本发明一种降低IC误动作的驱动电路实施例的结构示意图；
图2是图1所示的负反馈模块的一种具体实施例的电路图；
图3是本发明一种液晶显示面板实施例的结构示意图。
【具体实施方式】
下面结合附图和实施例对本发明进行详细说明。
请参阅图1，图1是本发明一种降低IC误动作的驱动电路实施例的结构示意图，如图1所示，本发明的驱动电路100包括数据驱动芯片101、扫描驱动芯片102、阵列走线103以及负反馈模块104。
本实施例中，数据驱动芯片101和扫描驱动芯片102之间通过阵列走线103电连接，使得数据驱动芯片101可通过阵列走线103向扫描驱动芯片102提供驱动信号。负反馈模块104电连接于阵列走线103，具体连接为：
负反馈模块104的输入端电连接阵列走线103靠近扫描驱动芯片102处，以从阵列走线103上提取输入扫描驱动芯片102的信号作为负反馈模块104的输入信号Xi。负反馈模块104的输出端电连接阵列走线103靠近数据驱动芯片101处，以将负反馈模块104的输出信号X0送入至阵列走线103中。因此，通过负反馈模块104对阵列走线103的电位进行控制，使得阵列走线103的电位保持恒定。
本实施例中，负反馈模块104包括电连接的比较单元141、放大单元142以及反馈单元143。
其中，比较单元141从阵列走线103上靠近扫描驱动芯片102处提取负反馈模块104的输入信号Xi，并将输入信号Xi与反馈单元143提供的反馈信号Xf进行比较得到差值信号Xd，放大单元142接收差值信号Xd并将差值信号Xd放大之后形成输出信号X0，并输出至阵列走线103上靠近数据驱动芯片101处。其中，反馈单元143提供的反馈信号Xf是从输出信号X0中提取的。
请参阅图2，图2是图1所示的负反馈模块的一种具体实施例的电路图。如图2所示，本实施例中的负反馈模块104具体为电压串联负反馈电路，其包括集成运算放大器140，反馈单元143以及输出电阻144。
其中，集成运算放大器140包括图1所示的比较单元141和放大单元142。并且集成运算放大器140的正向输入端电连接阵列走线103靠近扫描驱动芯片102处，集成运算放大器140的负向输入端电连接反馈单元143。反馈单元143包括电阻1431和电阻1432。并且，电阻1431的一端和电阻1432的一端电连接集成运算放大器140的负向输入端，电阻1431的另一端接地，电阻1432的另一端电连接集成运算放大器140的输出端。集成运算放大器140的输出端进一步电连接阵列走线103上靠近数据驱动芯片101处和输出电阻144，输出电阻144用以形成输出电压信号U0。
本实施例中，集成运算放大器140从阵列走线103上靠近扫描驱动芯片102处提取负反馈模块104的输入电压信号Ui。反馈单元143中的电阻1431和电阻1432提取集成运算放大器140的输出电压信号U0的一部分作为反馈电压信号Uf，并且输入电压信号Ui和反馈电压信号Uf在集成运算放大器140中比较得到差值电压信号Ud。集成运算放大器140将该差值电压信号Ud放大之后输出，得到输出电压U0。输出电压信号U0控制阵列走线103上靠近数据驱动芯片101处的电位，使得阵列走线103上的电位恒定，从而保证了数据驱动芯片101向扫描驱动芯片102提供正常的驱动信号，因此降低了扫描驱动芯片102的误动作。
在其他优选实施中，负反馈模块104具体还可以为电压并联负反馈电路、电流串联负反馈电路或者电流并联负反馈电路等。
请参阅图3，图3是本发明一种具有前述的降低IC误动作的驱动电路的液晶显示面板的一种实施例的结构示意图。如图3所示，本发明的液晶显示面板300包括对向设置的阵列基板301和彩色滤光片基板302。
本实施例中，彩色滤光片基板302上设置有整片的ITO透明导电膜，其中，ITO透明导电膜的面积与阵列基板301的面积相等。阵列基板301上设置有如图1所示的降低IC误动作的驱动电路，该驱动电路包括数据驱动芯片101、扫描驱动芯片102、阵列走线103和负反馈模块104。
其中，数据驱动芯片101和扫描驱动芯片102通过阵列走线103电连接，使得数据驱动芯片101通过阵列走线103向扫描驱动芯片102提供驱动信号。本实施例中，数据驱动芯片101进一步包括多条数据线S1、S2以及S3，并且数据线S1、S2以及S3和彩色滤光片基板302的ITO透明导电膜之间形成电容结构303、304以及305。同理，彩色滤光片基板302的ITO透明导电膜与阵列走线103之间也形成电容结构306。
本实施例中，负反馈模块104与图1所示的降低IC误动作的驱动电路中的负反馈模块的结构相同，其具体的结构此处不再赘述。
请一并参阅图1至图3所示，本发明液晶显示面板300的具体工作过程为：
在液晶显示面板300进行显示时，阵列基板301中的数据线S1、S2以及S3同时输送信号，使得彩色滤光片基板302上的ITO透明导电膜的电位易于受数据线S1、S2以及S3输送的信号的影响而产生波动。而彩色滤光片基板302上的ITO透明导电膜的电位变化又使得阵列走线103的电位产生变动。
比较单元141从阵列走线103靠近扫描驱动芯片102处提取输入扫描驱动芯片102的不稳定的电压信号作为负反馈模块104的输入电压信号，并将输入电压信号与反馈单元143提供的反馈电压信号进行比较得到差值电压信号，放大单元142接收差值电压信号并将差值电压信号放大之后形成输出电压信号，并输出至阵列走线103上靠近数据驱动芯片101处，以控制阵列走线103上的电位。其中，反馈单元143提供的反馈电压信号是从输出电压信号中提取的。
因此，本发明实施例通过负反馈模块104对阵列走线103上的电位进行控制，使得阵列走线103的电位保持恒定，从而降低了扫描驱动芯片102的误动作，提高了液晶显示面板300的显示品质。
综上所述，本发明通过设置一电连接于阵列走线上的负反馈模块，用于提取阵列走线上靠近扫描驱动芯片的电压信号，并与从负反馈模块输出处提取的反馈电压信号进行比较和调整，最后再输送到阵列走线上靠近数据驱动芯片处，以控制阵列走线上的电位，使得阵列走线的电位保持恒定。因此降低扫描驱动芯片因阵列走线的电位波动而引起的误动作，进而提高了液晶显示面板的显示品质。
以上所述仅为本发明的实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (15)

  1. 一种降低IC误动作的驱动电路，其包括数据驱动芯片、扫描驱动芯片以及阵列走线，其中，所述数据驱动芯片和所述扫描驱动芯片之间通过所述阵列走线电连接，所述数据驱动芯片通过所述阵列走线向所述扫描驱动芯片提供驱动信号，其中：
    所述驱动电路进一步包括负反馈模块，所述负反馈模块电连接于所述阵列走线，使得所述阵列走线的电位保持恒定；
    其中，所述负反馈模块的输入端电连接所述阵列走线靠近所述扫描驱动芯片处，以从所述阵列走线上提取输入所述扫描驱动芯片的信号作为所述负反馈模块的输入信号；
    所述负反馈模块的输出端电连接所述阵列走线靠近所述数据驱动芯片处，以将所述负反馈模块的输出信号送入至所述阵列走线中；
    所述负反馈模块包括电连接的比较单元、放大单元以及反馈单元。
  2. 根据权利要求1所述的驱动电路，其中，所述比较单元提取所述负反馈模块的输入信号，并将所述输入信号与所述反馈单元提供的反馈信号进行比较得到差值信号；所述放大单元接收所述差值信号并将所述差值信号放大之后输出至所述阵列走线上。
  3. 根据权利要求1所述的驱动电路，其中，所述负反馈模块包括电压串联负反馈电路、电压并联负反馈电路、电流串联负反馈电路或者电流并联负反馈电路。
  4. 一种降低IC误动作的驱动电路，其包括数据驱动芯片、扫描驱动芯片以及阵列走线，其中，所述数据驱动芯片和所述扫描驱动芯片之间通过所述阵列走线电连接，所述数据驱动芯片通过所述阵列走线向所述扫描驱动芯片提供驱动信号，其中：
    所述驱动电路进一步包括负反馈模块，所述负反馈模块电连接于所述阵列走线，使得所述阵列走线的电位保持恒定。
  5. 根据权利要求4所述的驱动电路，其中，所述负反馈模块的输入端电连接所述阵列走线靠近所述扫描驱动芯片处，以从所述阵列走线上提取输入所述扫描驱动芯片的信号作为所述负反馈模块的输入信号。
  6. 根据权利要求5所述的驱动电路，其中，所述负反馈模块的输出端电连接所述阵列走线靠近所述数据驱动芯片处，以将所述负反馈模块的输出信号送入至所述阵列走线中。
  7. 根据权利要求4所述的驱动电路，其中，所述负反馈模块包括电连接的比较单元、放大单元以及反馈单元。
  8. 根据权利要求7所述的驱动电路，其中，所述比较单元从所述阵列走线上靠近所述扫描驱动芯片处提取所述负反馈模块的输入信号，并将所述输入信号与所述反馈单元提供的反馈信号进行比较得到差值信号；所述放大单元接收所述差值信号并将所述差值信号放大之后输出至所述阵列走线上靠近所述数据驱动芯片处。
  9. 根据权利要求4所述的驱动电路，其中，所述负反馈模块包括电压串联负反馈电路、电压并联负反馈电路、电流串联负反馈电路或者电流并联负反馈电路。
  10. 一种液晶显示面板，其包括阵列基板以及彩色滤光片基板，其中在所述阵列基板上设置一种降低IC误动作的驱动电路，所述驱动电路包括数据驱动芯片、扫描驱动芯片以及阵列走线，其中，所述数据驱动芯片和所述扫描驱动芯片之间通过所述阵列走线电连接，所述数据驱动芯片通过所述阵列走线向所述扫描驱动芯片提供驱动信号，其中：
    所述驱动电路进一步包括负反馈模块，所述负反馈模块电连接于所述阵列走线，使得所述阵列走线的电位保持恒定。
  11. 根据权利要求10所述的液晶显示面板，其中，所述负反馈模块的输入端电连接所述阵列走线靠近所述扫描驱动芯片处，以从所述阵列走线上提取输入所述扫描驱动芯片的信号作为所述负反馈模块的输入信号。
  12. 根据权利要求11所述的液晶显示面板，其中，所述负反馈模块的输出端电连接所述阵列走线靠近所述数据驱动芯片处，以将所述负反馈模块的输出信号送入至所述阵列走线中。
  13. 根据权利要求10所述的液晶显示面板，其中，所述负反馈模块包括电连接的比较单元、放大单元以及反馈单元。
  14. 根据权利要求13所述的液晶显示面板，其中，所述比较单元从所述阵列走线上靠近所述扫描驱动芯片处提取所述负反馈模块的输入信号，并将所述输入信号与所述反馈单元提供的反馈信号进行比较得到差值信号；所述放大单元接收所述差值信号并将所述差值信号放大之后输出至所述阵列走线上靠近所述数据驱动芯片处。
  15. 根据权利要求10所述的液晶显示面板，其中，所述负反馈模块包括电压串联负反馈电路、电压并联负反馈电路、电流串联负反馈电路或者电流并联负反馈电路。
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