WO2016119271A1 - 液晶显示面板及液晶显示装置 - Google Patents

液晶显示面板及液晶显示装置 Download PDF

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Publication number
WO2016119271A1
WO2016119271A1 PCT/CN2015/072127 CN2015072127W WO2016119271A1 WO 2016119271 A1 WO2016119271 A1 WO 2016119271A1 CN 2015072127 W CN2015072127 W CN 2015072127W WO 2016119271 A1 WO2016119271 A1 WO 2016119271A1
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Prior art keywords
scan
signal
liquid crystal
crystal display
driving chip
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PCT/CN2015/072127
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English (en)
French (fr)
Inventor
徐向阳
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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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    • 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
    • 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
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2230/00—Details of flat display driving waveforms

Definitions

  • the present invention relates to the field of liquid crystal display, and in particular to a liquid crystal display panel and a liquid crystal display device.
  • the liquid crystal display device As a high-quality flat panel display device, the liquid crystal display device has the advantages of small size, low power consumption, high resolution, high color saturation and fast image refreshing speed.
  • the liquid crystal display panel generally uses an external driving chip to charge the pixel capacitance in the liquid crystal display panel by using a progressive scanning method.
  • the external driver chip has COF (Chip On Film, chip on the film) and COG (chip on Glass, set on the glass plate) two kinds of packaging methods, but due to the different package chip impedance and the attenuation of the driving signal, the scanning signal output pulse of different driving chips will be different; thus the pixel switching ability of different pixels is different. , causing display defects of the horizontal band-shaped defect (H-block) of the corresponding liquid crystal display device.
  • COF Chip On Film, chip on the film
  • COG chip on Glass, set on the glass plate
  • the object of the present invention is to provide a liquid crystal display panel and a liquid crystal display device with different scanning signal output pulse differences of different driving chips, so as to solve the output pulse of the scanning signals of different driving chips of the existing liquid crystal display panel and the liquid crystal display device.
  • the difference is large, resulting in a technical problem of poor display of the liquid crystal display device.
  • Embodiments of the present invention provide a liquid crystal display panel including a data line, a scan line, and a pixel unit formed by interleaving the data line and the scan line;
  • the liquid crystal display panel further includes:
  • a data driving chip connected to the data line for inputting a data signal to the data line
  • a scan driving chip set including at least two scan driving chips connected to the corresponding scan lines for inputting scan signals to the scan lines;
  • the comparison unit is respectively connected to at least two scan driving chips for performing signal compensation on the scan signal output by the other scan driving chip according to the scan signal output by the scan driving chip.
  • the difference between the scan signals output by the two scan driving chips is less than a set value
  • the signal of the scan signal outputted by the scan driving chip that outputs the scan signal is signal-compensated; the scan line inputs the corresponding scan signal to the pixel unit for display driving.
  • the scan signal outputted by the scan driving chip that outputs the scan signal is subjected to signal compensation.
  • the comparison unit includes a comparison amplifier, and the scan driving chip that outputs the scan signal earlier is connected to the first input end of the comparison amplifier through a delay device;
  • the scan driving chip having a later scan signal is respectively connected to the second input end of the comparison amplifier and the signal output interface; the output end of the comparison amplifier is connected to the signal output interface.
  • the comparison amplifier compares the scan signals of the second input terminal according to the scan signal of the first input terminal, thereby generating a calibration coefficient and the Calibration factor output.
  • the signal output interface calibrates the scan signal of the second input terminal according to the calibration coefficient, and scans the scan signal of the second input end from the calibration
  • the signal output interface is output to the corresponding scan line.
  • Embodiments of the present invention provide a liquid crystal display panel including a data line, a scan line, and a pixel unit formed by interleaving the data line and the scan line;
  • the liquid crystal display panel further includes:
  • a data driving chip connected to the data line for inputting a data signal to the data line
  • a scan driving chip set including at least two scan driving chips connected to the corresponding scan lines for inputting scan signals to the scan lines;
  • the comparison unit is respectively connected to at least two scan driving chips for performing signal compensation on the scan signal output by the other scan driving chip according to the scan signal output by the scan driving chip.
  • the difference between the scan signals output by the two scan driving chips is made smaller than a set value.
  • the scan signal outputted by the scan driving chip that outputs the scan signal is subjected to signal compensation.
  • the comparison unit includes a comparison amplifier, and the scan driving chip that outputs the scan signal earlier is connected to the first input end of the comparison amplifier through a delay device;
  • the scan driving chip having a later scan signal is respectively connected to the second input end of the comparison amplifier and the signal output interface; the output end of the comparison amplifier is connected to the signal output interface.
  • the comparison amplifier compares the scan signals of the second input terminal according to the scan signal of the first input terminal, thereby generating a calibration coefficient and the Calibration factor output.
  • the signal output interface calibrates the scan signal of the second input terminal according to the calibration coefficient, and scans the scan signal of the second input end from the calibration
  • the signal output interface is output to the corresponding scan line.
  • the scan line inputs the corresponding scan signal to the pixel unit row by row for display driving.
  • the present invention also provides a liquid crystal display device including a backlight and a liquid crystal display panel; wherein the liquid crystal display panel includes:
  • a pixel unit formed by interleaving the data line and the scan line;
  • a data driving chip connected to the data line for inputting a data signal to the data line
  • a scan driving chip set including at least two scan driving chips connected to the corresponding scan lines for inputting scan signals to the scan lines;
  • the comparison unit is respectively connected to at least two scan driving chips for performing signal compensation on the scan signal outputted by the other scan driving chip according to the scan signal output by the scan driving chip, so that the two The difference between the scan signals output by the scan driver chip is less than the set value.
  • the scan signal outputted by the scan driving chip that outputs the scan signal is subjected to signal compensation.
  • the comparison unit includes a comparison amplifier, and the scan driving chip that outputs the scan signal earlier is connected to the first input terminal of the comparison amplifier through a delay device;
  • the scan driving chip having a later scan signal is respectively connected to the second input end of the comparison amplifier and the signal output interface; the output end of the comparison amplifier is connected to the signal output interface.
  • the comparison amplifier compares the scan signals of the second input terminal according to the scan signal of the first input terminal, thereby generating a calibration coefficient and the Calibration factor output.
  • the signal output interface calibrates the scan signal of the second input terminal according to the calibration coefficient, and scans the calibrated scan signal of the second input terminal from the The signal output interface is output to the corresponding scan line.
  • the scan line inputs the corresponding scan signal to the pixel unit row by row for display driving.
  • the liquid crystal display panel and the liquid crystal display device of the present invention have a comparison unit, so that the difference of the scanning signal output pulses of the different driving chips is small, thereby improving the display of the liquid crystal display device.
  • the invention solves the technical problem that the difference between the scanning signal output pulses of the different driving chips of the conventional liquid crystal display panel and the liquid crystal display device is large, resulting in poor display of the liquid crystal display device.
  • FIG. 1 is a schematic structural view of a preferred embodiment of a liquid crystal display panel of the present invention.
  • FIG. 2 is a schematic structural view of a scan driving chip set and a comparison unit of a preferred embodiment of the liquid crystal display panel of the present invention
  • 3A is a waveform diagram of scan signals of different scan driving chips before comparison unit calibration of the liquid crystal display panel of the present invention
  • 3B is a waveform diagram of scan signals of different scan driving chips after comparison unit calibration of the liquid crystal display panel of the present invention.
  • FIG. 1 is a schematic structural view of a preferred embodiment of a liquid crystal display panel according to the present invention
  • FIG. 2 is a schematic structural view of a scan driving chip set and a comparison unit of a preferred embodiment of the liquid crystal display panel of the present invention.
  • the liquid crystal display panel 10 includes a data line 11 , a scan line 12 , and a pixel unit 13 alternately formed by the data line 11 and the scan line 12 .
  • the liquid crystal display panel 10 further includes a data driving chip 14 , at least two scan driving chip sets 15 , and Comparison unit.
  • the scan driving chipset includes at least two scan driving chips, and the data driving chip 14 is connected to the data line 11 for inputting a data signal to the data line 11; the scan driving chip of the scan driving chip set 15 is connected to the corresponding scanning line 12, For inputting a scan signal to the scan line 12; a comparison unit (not shown in FIG. 1) is respectively connected to the two scan drive chips for scanning the output of the other scan drive chip according to the scan signal output by one scan drive chip The signal is signal compensated such that the difference between the scan signals output by the two scan drive chips is less than a set value. In order to perform the compensation operation better, the comparison unit performs signal compensation on the scan signal outputted by the scan drive chip whose output scan signal is later.
  • the scan driver chipset may also include more than two scan driver chips. The comparison unit performs signal compensation on the scan drive chips of the two pairs, so that the difference of the scan signal pulses output by all the scan driver chips is small.
  • the scan driving chipset 15 includes a scan driving chip 151 that outputs an earlier scan signal and a scan driving chip 152 that outputs a later scan signal.
  • the comparison unit includes a comparison amplifier 161 and a signal output interface 162.
  • the scan driving chip 151 that outputs the scan signal earlier is connected to the first input end of the comparison amplifier 161 through the delay unit 163, and the scan input driving chip 152 that outputs the later scan signal and the second input end of the comparison amplifier 161 and the signal output interface, respectively.
  • the 162 is connected, and the output of the comparison amplifier 161 is connected to the signal output interface 162.
  • the data driving chip 14 inputs a data signal to the corresponding pixel unit 13 through the data line 11, and the scan driving chip inputs a scan signal to the corresponding pixel unit 13 through the scan line 12. Since the output pulses of the scan signals of the different scan driving chips are different, the comparison unit here performs signal compensation on the scan signals output from the scan drive chip 152 which outputs the scan signals later. Specifically, as shown in FIG. 2, the scan driving chip 151 outputs a scan signal before the scan driving chip 152.
  • the scan driving chip 151 outputs a scan signal, and the scan line 12 inputs the corresponding scan signal to the pixel unit 13 for display driving, and the scan signal output from the scan driving chip 151 is input to the first input of the comparison amplifier 161 through the delay unit 163. The end is such that a comparison operation can be performed with the scan signal subsequently generated by the scan driving chip 152.
  • the scan driving chip 152 then outputs a scan signal, which is input to the second input terminal of the comparison amplifier 161; the comparison amplifier 161 compares the scan signals of the second input terminal according to the scan signal of the first input terminal, thereby generating a calibration coefficient, and The calibration coefficient is output from the output to the signal output interface 162. If the scan signal of the first input terminal is greater than the scan signal of the second input terminal, the calibration coefficient generated by the comparison amplifier 161 is positive. If the scan signal of the first input terminal is smaller than the scan signal of the second input terminal, the calibration coefficient generated by the amplifier 161 is compared. Negative.
  • the signal output interface 162 receives the calibration coefficient outputted by the output of the comparison amplifier 161, and the signal output interface 162 receives the scan output signal from the scan driving chip 152, and the signal output interface 162 calibrates the scan signal output by the scan driving chip 152 according to the calibration coefficient. If the calibration coefficient is positive, the scan signal outputted by the scan driving chip 152 is amplified. If the calibration coefficient is negative, the scan signal output from the scan driving chip 152 is reduced; so that the scan signal output by the scan driving chip 151 is made. The difference between the scan signal outputted by the scan driver chip 152 and the scan signal may be less than a set value, which may be set according to a user's request.
  • the final signal output interface 162 outputs the calibrated scan signals to the corresponding scan lines 12 row by row.
  • the comparison unit performs positive or negative compensation on the scan signal output from the scan driving chip 152 according to the scan signal output from the scan driving chip 151, the difference between the scan signals output by the scan driving chip 151 and the scan driving chip 152 can be Less than the set value.
  • FIG. 3A is a waveform diagram of scan signals of different scan driving chips before comparison unit calibration of the liquid crystal display panel of the present invention
  • FIG. 3B is a comparison unit of the liquid crystal display panel of the present invention after calibration Waveforms of the scan signals of different scan drive chips.
  • the scanning signals of the different scanning driving chips (scanning driving chip 301A and scanning driving chip 302A) before the comparison unit calibration have a larger amplitude difference
  • the different scanning driving after the comparison unit is calibrated.
  • the amplitudes of the scanning signals of the chips are substantially the same, thereby avoiding display failure of the liquid crystal display device caused by the difference in scanning signals of different driving chips.
  • the comparison unit by providing the comparison unit, the scanning signal output pulse difference of the different driving chips is small, thereby improving the display effect of the liquid crystal display device.
  • the present invention also provides a liquid crystal display device including a backlight and a liquid crystal display panel.
  • the liquid crystal display panel includes a data line, a scan line, a pixel unit, a data driving chip, a scan driving chip set, and a comparison unit.
  • the pixel unit is formed by interleaving the data line and the scan line; the data driving chip is connected to the data line for inputting the data signal to the data line; the comparing unit is respectively connected to the two scan driving chips, and is configured to scan the signal output according to a scan driving chip. And performing signal compensation on the scan signal outputted by the other scan driving chip, so that the difference between the scan signals output by the two scan driving chips is less than the set value.
  • the scan signal outputted by the scan driving chip whose output scan signal is later is subjected to signal compensation.
  • the comparison unit comprises a comparison amplifier, and the scan driver chip that outputs the scan signal is connected to the first input end of the comparison amplifier through the delay device; the scan drive chip that outputs the scan signal is later, and the second of the comparison amplifier respectively.
  • the input terminal and the signal output interface are connected; the output of the comparison amplifier is connected to the signal output interface.
  • the comparison amplifier compares the scan signals of the second input according to the scan signal of the first input to generate a calibration coefficient and output the calibration coefficient from the output.
  • the signal output interface calibrates the scan signal of the second input terminal according to the calibration coefficient, and outputs the scan signal of the calibrated second input terminal to the corresponding scan line from the signal output interface.
  • the specific working principle of the liquid crystal display device of the preferred embodiment is the same as or similar to the description in the preferred embodiment of the liquid crystal display panel described above. For details, refer to the related description in the above liquid crystal display panel.
  • the liquid crystal display panel and the liquid crystal display device of the present invention provide a comparison unit, so that the scanning signal output pulse difference of different driving chips is small, thereby improving the display effect of the liquid crystal display device; and solving the existing liquid crystal display panel and liquid crystal display device The difference in scanning signal output pulses of different driving chips is large, resulting in a technical problem of poor display of the liquid crystal display device.

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Abstract

一种液晶显示面板（10），其包括数据线（11）、扫描线（12）、像素单元（13）、数据驱动芯片（14）、扫描驱动芯片组（15）以及比较单元，其中比较单元用于根据一扫描驱动芯片（151）输出的扫描信号，对另一扫描驱动芯片（152）输出的扫描信号进行信号补偿。该液晶显示面板（10）设置比较单元，使得不同驱动芯片的扫描信号输出脉冲差异较小，从而提高了液晶显示装置的显示效果。

Description

液晶显示面板及液晶显示装置 技术领域
本发明涉及液晶显示领域，特别是涉及一种液晶显示面板及液晶显示装置。
 背景技术
液晶显示装置作为一种优质的平板显示装置，具有体积小、功耗低、分辨率高、色彩饱和度高以及图像刷新速度快等优点。其中的液晶显示面板一般采用外挂式驱动芯片使用逐行扫描的方式对液晶显示面板中的像素电容进行充电.
通常外挂式驱动芯片具有COF（Chip On Film,，薄膜上设置芯片）以及COG（chip on glass，玻璃板上设置芯片）两种封装方式，但由于不同驱动芯片的封装阻抗以及驱动信号的衰减不同，导致不同驱动芯片的扫描信号输出脉冲会有差异；从而不同像素的像素开关能力具有差异，造成相应的液晶显示装置横向带状不良(H-block)的显示缺陷。
故，有必要提供一种液晶显示面板及液晶显示装置，以解决现有技术所存在的问题。
 技术问题
本发明的目的在于提供一种不同驱动芯片的扫描信号输出脉冲差异较小的液晶显示面板及液晶显示装置；以解决现有的液晶显示面板及液晶显示装置的由于不同驱动芯片的扫描信号输出脉冲的差异较大，导致液晶显示装置的显示不良的技术问题。
 技术解决方案
本发明实施例提供一种液晶显示面板，其包括数据线、扫描线以及由所述数据线和所述扫描线交错形成的像素单元；
其中所述液晶显示面板还包括：
数据驱动芯片，与所述数据线连接，用于给所述数据线输入数据信号；
扫描驱动芯片组，包括至少两个扫描驱动芯片，与相应的所述扫描线连接，用于给所述扫描线输入扫描信号；以及
比较单元，分别与至少两个所述扫描驱动芯片连接，用于根据一所述扫描驱动芯片输出的所述扫描信号，对另一所述扫描驱动芯片输出的所述扫描信号进行信号补偿，以使得两个所述扫描驱动芯片输出的扫描信号的差值小于设定值；
其中对输出所述扫描信号较晚的所述扫描驱动芯片输出的所述扫描信号进行信号补偿；所述扫描线逐行将相应的所述扫描信号输入至像素单元进行显示驱动。
在本发明所述的液晶显示面板中，对输出所述扫描信号较晚的所述扫描驱动芯片输出的所述扫描信号进行信号补偿。
在本发明所述的液晶显示面板中，所述比较单元包括比较放大器，输出所述扫描信号较早的所述扫描驱动芯片通过延时器与所述比较放大器的第一输入端连接；输出所述扫描信号较晚的所述扫描驱动芯片，分别与所述比较放大器的第二输入端以及信号输出接口连接；所述比较放大器的输出端与所述信号输出接口连接。
在本发明所述的液晶显示面板中，所述比较放大器根据所述第一输入端的扫描信号，对所述第二输入端的扫描信号进行对比，从而生成校准系数并从所述输出端将所述校准系数输出。
在本发明所述的液晶显示面板中，所述信号输出接口根据所述校准系数，对所述第二输入端的扫描信号进行校准，并将校准后的所述第二输入端的扫描信号从所述信号输出接口输出至相应的所述扫描线上。
本发明实施例提供一种液晶显示面板，其包括数据线、扫描线以及由所述数据线和所述扫描线交错形成的像素单元；
其中所述液晶显示面板还包括：
数据驱动芯片，与所述数据线连接，用于给所述数据线输入数据信号；
扫描驱动芯片组，包括至少两个扫描驱动芯片，与相应的所述扫描线连接，用于给所述扫描线输入扫描信号；以及
比较单元，分别与至少两个所述扫描驱动芯片连接，用于根据一所述扫描驱动芯片输出的所述扫描信号，对另一所述扫描驱动芯片输出的所述扫描信号进行信号补偿，以使得两个所述扫描驱动芯片输出的扫描信号的差值小于设定值。
在本发明所述的液晶显示面板中，对输出所述扫描信号较晚的所述扫描驱动芯片输出的所述扫描信号进行信号补偿。
在本发明所述的液晶显示面板中，所述比较单元包括比较放大器，输出所述扫描信号较早的所述扫描驱动芯片通过延时器与所述比较放大器的第一输入端连接；输出所述扫描信号较晚的所述扫描驱动芯片，分别与所述比较放大器的第二输入端以及信号输出接口连接；所述比较放大器的输出端与所述信号输出接口连接。
在本发明所述的液晶显示面板中，所述比较放大器根据所述第一输入端的扫描信号，对所述第二输入端的扫描信号进行对比，从而生成校准系数并从所述输出端将所述校准系数输出。
在本发明所述的液晶显示面板中，所述信号输出接口根据所述校准系数，对所述第二输入端的扫描信号进行校准，并将校准后的所述第二输入端的扫描信号从所述信号输出接口输出至相应的所述扫描线上。
在本发明所述的液晶显示面板中，所述扫描线逐行将相应的所述扫描信号输入至像素单元进行显示驱动。
本发明还提供一种液晶显示装置，其包括背光源以及液晶显示面板；其中所述液晶显示面板包括：
数据线；
扫描线；
像素单元，由所述数据线和所述扫描线交错形成；
数据驱动芯片，与所述数据线连接，用于给所述数据线输入数据信号；
扫描驱动芯片组，包括至少两个扫描驱动芯片，与相应的所述扫描线连接，用于给所述扫描线输入扫描信号；以及
比较单元，分别与至少两个所述扫描驱动芯片连接，用于根据一所述扫描驱动芯片输出的所述扫描信号，对另一扫描驱动芯片输出的扫描信号进行信号补偿，以使得两个所述扫描驱动芯片输出的扫描信号的差值小于设定值。
在本发明所述的液晶显示装置中，对输出所述扫描信号较晚的所述扫描驱动芯片输出的所述扫描信号进行信号补偿。
在本发明所述的液晶显示装置中，所述比较单元包括比较放大器，输出所述扫描信号较早的所述扫描驱动芯片通过延时器与所述比较放大器的第一输入端连接；输出所述扫描信号较晚的所述扫描驱动芯片，分别与所述比较放大器的第二输入端以及信号输出接口连接；所述比较放大器的输出端与所述信号输出接口连接。
在本发明所述的液晶显示装置中，所述比较放大器根据所述第一输入端的扫描信号，对所述第二输入端的扫描信号进行对比，从而生成校准系数并从所述输出端将所述校准系数输出。
在本发明所述的液晶显示装置中，所述信号输出接口根据所述校准系数，对所述第二输入端的扫描信号进行校准，并将校准后的所述第二输入端的扫描信号从所述信号输出接口输出至相应的所述扫描线上。
在本发明所述的液晶显示装置中，所述扫描线逐行将相应的所述扫描信号输入至像素单元进行显示驱动。
 有益效果
相较于现有的液晶显示面板及液晶显示装置，本发明的液晶显示面板及液晶显示装置通过设置比较单元，使得不同驱动芯片的扫描信号输出脉冲差异较小，从而提高了液晶显示装置的显示效果；解决了现有的液晶显示面板及液晶显示装置的由于不同驱动芯片的扫描信号输出脉冲的差异较大，导致液晶显示装置的显示不良的技术问题。
 附图说明
图1为本发明的液晶显示面板的优选实施例的结构示意图；
图2为本发明的液晶显示面板的优选实施例的扫描驱动芯片组和比较单元的结构示意图；
图3A为本发明的液晶显示面板的比较单元校准前的不同扫描驱动芯片的扫描信号的波形图；
图3B为本发明的液晶显示面板的比较单元校准后的不同扫描驱动芯片的扫描信号的波形图。
 本发明的最佳实施方式
以下各实施例的说明是参考附加的图式，用以例示本发明可用以实施的特定实施例。本发明所提到的方向用语，例如「上」、「下」、「前」、「后」、「左」、「右」、「内」、「外」、「侧面」等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本发明，而非用以限制本发明。
在图中，结构相似的单元是以相同标号表示。
请参照图1和图2，图1为本发明的液晶显示面板的优选实施例的结构示意图；图2为本发明的液晶显示面板的优选实施例的扫描驱动芯片组和比较单元的结构示意图。该液晶显示面板10包括数据线11、扫描线12以及由数据线11和扫描线12交错形成的像素单元13，其中液晶显示面板10还包括数据驱动芯片14、至少两个扫描驱动芯片组15以及比较单元。其中扫描驱动芯片组包括至少两个扫描驱动芯片，数据驱动芯片14与数据线11连接，用于给数据线11输入数据信号；扫描驱动芯片组15的扫描驱动芯片与相应的扫描线12连接，用于给扫描线12输入扫描信号；比较单元（图1中未示出）分别与两条扫描驱动芯片连接，用于根据一扫描驱动芯片输出的扫描信号，对另一扫描驱动芯片输出的扫描信号进行信号补偿，以使得两个扫描驱动芯片输出的扫描信号的差值小于设定值。为了较好的进行补偿操作，比较单元对输出扫描信号较晚的扫描驱动芯片输出的扫描信号进行信号补偿。当然这里扫描驱动芯片组也可包括两个以上的扫描驱动芯片，比较单元通过对两两组合的扫描驱动芯片进行信号补偿，从而使得所有的扫描驱动芯片输出的扫描信号脉冲的差异较小。
请参照图2，其中扫描驱动芯片组15包括输出扫描信号较早的扫描驱动芯片151和输出扫描信号较晚的扫描驱动芯片152。该比较单元包括比较放大器161以及信号输出接口162。输出扫描信号较早的扫描驱动芯片151通过延时器163与比较放大器161的第一输入端连接，输出扫描信号较晚的扫描驱动芯片152分别与比较放大器161的第二输入端以及信号输出接口162连接，比较放大器161的输出端与信号输出接口162连接。
本优选实施例的液晶显示面板10使用时，数据驱动芯片14通过数据线11给相应的像素单元13输入数据信号，扫描驱动芯片通过扫描线12给相应的像素单元13输入扫描信号。由于不同扫描驱动芯片的扫描信号的输出脉冲存在差异，这里的比较单元对输出扫描信号较晚的扫描驱动芯片152输出的扫描信号进行信号补偿。具体的如图2所示，其中扫描驱动芯片151先于扫描驱动芯片152输出扫描信号。
首先扫描驱动芯片151输出扫描信号，扫描线12逐行将相应的扫描信号输入至像素单元13进行显示驱动；同时扫描驱动芯片151输出的扫描信号通过延时器163输入至比较放大器161的第一输入端，以使得可与扫描驱动芯片152后续产生的扫描信号进行对比操作。
随后扫描驱动芯片152输出扫描信号，该扫描信号输入至比较放大器161的第二输入端；比较放大器161根据第一输入端的扫描信号，对第二输入端的扫描信号进行对比，从而生成校准系数，并从输出端将该校准系数输出至信号输出接口162。如第一输入端的扫描信号大于第二输入端的扫描信号，则比较放大161器生成的校准系数为正，如第一输入端的扫描信号小于第二输入端的扫描信号，则比较放大器161生成的校准系数为负。
然后信号输出接口162接收比较放大器161的输出端输出的校准系数，同时信号输出接口162接收扫描驱动芯片152输出扫描信号，信号输出接口162根据该校准系数对扫描驱动芯片152输出的扫描信号进行校准，如校准系数为正，则对扫描驱动芯片152输出的扫描信号进行放大处理，如校准系数为负，则对扫描驱动芯片152输出的扫描信号进行缩小处理；使得扫描驱动芯片151输出的扫描信号和扫描驱动芯片152输出的扫描信号的差值可以小于设定值，该设定值可根据用户的要求进行设定。最后信号输出接口162将校准后的扫描信号逐行输出至相应的扫描线12上。
由于比较单元根据扫描驱动芯片151输出的扫描信号，对扫描驱动芯片152输出的扫描信号进行信号的正补偿或负补偿，从而使得扫描驱动芯片151和扫描驱动芯片152输出的扫描信号的差值可以小于设定值。
具体如图3A和图3B所示，图3A为本发明的液晶显示面板的比较单元校准前的不同扫描驱动芯片的扫描信号的波形图；图3B为本发明的液晶显示面板的比较单元校准后的不同扫描驱动芯片的扫描信号的波形图。从图3A可见，比较单元校准前的不同扫描驱动芯片(扫描驱动芯片301A和扫描驱动芯片302A)的扫描信号的具有较大的幅值差异，而图3B中，比较单元校准后的不同扫描驱动芯片(扫描驱动芯片301B和扫描驱动芯片302B)的扫描信号的幅值已基本相同，从而避免了不同驱动芯片的扫描信号的差异导致的液晶显示装置的显示不良。
本发明的液晶显示面板及液晶显示装置通过设置比较单元，使得不同驱动芯片的扫描信号输出脉冲差异较小，从而提高了液晶显示装置的显示效果。
本发明还提供一种液晶显示装置，该液晶显示装置包括背光源以及液晶显示面板。该液晶显示面板包括数据线、扫描线、像素单元、数据驱动芯片、扫描驱动芯片组以及比较单元。像素单元由数据线和扫描线交错形成；数据驱动芯片与数据线连接，用于给数据线输入数据信号；比较单元分别与两个扫描驱动芯片连接，用于根据一扫描驱动芯片输出的扫描信号，对另一扫描驱动芯片输出的扫描信号进行信号补偿，以使得两个扫描驱动芯片输出的扫描信号的差值小于设定值。
优选的，对输出扫描信号较晚的扫描驱动芯片输出的扫描信号进行信号补偿。
优选的，该比较单元包括比较放大器，输出扫描信号较早的扫描驱动芯片通过延时器与比较放大器的第一输入端连接；输出扫描信号较晚的扫描驱动芯片，分别与比较放大器的第二输入端以及信号输出接口连接；比较放大器的输出端与信号输出接口连接。
优选的，比较放大器根据第一输入端的扫描信号，对第二输入端的扫描信号进行对比，从而生成校准系数并从输出端将校准系数输出。
优选的，信号输出接口根据校准系数，对第二输入端的扫描信号进行校准，并将校准后的第二输入端的扫描信号从信号输出接口输出至相应的扫描线上。
本优选实施例的液晶显示装置的具体工作原理与上述的液晶显示面板的优选实施例中的描述相同或相似，具体请参见上述液晶显示面板中的相关描述。
本发明的液晶显示面板及液晶显示装置通过设置比较单元，使得不同驱动芯片的扫描信号输出脉冲差异较小，从而提高了液晶显示装置的显示效果；解决了现有的液晶显示面板及液晶显示装置的由于不同驱动芯片的扫描信号输出脉冲的差异较大，导致液晶显示装置的显示不良的技术问题。
综上所述，虽然本发明已以优选实施例揭露如上，但上述优选实施例并非用以限制本发明，本领域的普通技术人员，在不脱离本发明的精神和范围内，均可作各种更动与润饰，因此本发明的保护范围以权利要求界定的范围为准。

Claims (17)

  1. 一种液晶显示面板，其包括数据线、扫描线以及由所述数据线和所述扫描线交错形成的像素单元；
    其中所述液晶显示面板还包括：
    数据驱动芯片，与所述数据线连接，用于给所述数据线输入数据信号；
    扫描驱动芯片组，包括至少两个扫描驱动芯片，与相应的所述扫描线连接，用于给所述扫描线输入扫描信号；以及
    比较单元，分别与至少两个所述扫描驱动芯片连接，用于根据一所述扫描驱动芯片输出的所述扫描信号，对另一所述扫描驱动芯片输出的所述扫描信号进行信号补偿，以使得两个所述扫描驱动芯片输出的扫描信号的差值小于设定值；
    其中对输出所述扫描信号较晚的所述扫描驱动芯片输出的所述扫描信号进行信号补偿；所述扫描线逐行将相应的所述扫描信号输入至像素单元进行显示驱动。
  2. 根据权利要求1所述的液晶显示面板，其中对输出所述扫描信号较晚的所述扫描驱动芯片输出的所述扫描信号进行信号补偿。
  3. 根据权利要求2所述的液晶显示面板，其中所述比较单元包括比较放大器，输出所述扫描信号较早的所述扫描驱动芯片通过延时器与所述比较放大器的第一输入端连接；输出所述扫描信号较晚的所述扫描驱动芯片，分别与所述比较放大器的第二输入端以及信号输出接口连接；所述比较放大器的输出端与所述信号输出接口连接。
  4. 根据权利要求3所述的液晶显示面板，其中所述比较放大器根据所述第一输入端的扫描信号，对所述第二输入端的扫描信号进行对比，从而生成校准系数并从所述输出端将所述校准系数输出。
  5. 根据权利要求4所述的液晶显示面板，其中所述信号输出接口根据所述校准系数，对所述第二输入端的扫描信号进行校准，并将校准后的所述第二输入端的扫描信号从所述信号输出接口输出至相应的所述扫描线上。
  6. 一种液晶显示面板，其包括数据线、扫描线以及由所述数据线和所述扫描线交错形成的像素单元；
    其中所述液晶显示面板还包括：
    数据驱动芯片，与所述数据线连接，用于给所述数据线输入数据信号；
    扫描驱动芯片组，包括至少两个扫描驱动芯片，与相应的所述扫描线连接，用于给所述扫描线输入扫描信号；以及
    比较单元，分别与至少两个所述扫描驱动芯片连接，用于根据一所述扫描驱动芯片输出的所述扫描信号，对另一所述扫描驱动芯片输出的所述扫描信号进行信号补偿，以使得两个所述扫描驱动芯片输出的扫描信号的差值小于设定值。
  7. 根据权利要求6所述的液晶显示面板，其中对输出所述扫描信号较晚的所述扫描驱动芯片输出的所述扫描信号进行信号补偿。
  8. 根据权利要求7所述的液晶显示面板，其中所述比较单元包括比较放大器，输出所述扫描信号较早的所述扫描驱动芯片通过延时器与所述比较放大器的第一输入端连接；输出所述扫描信号较晚的所述扫描驱动芯片，分别与所述比较放大器的第二输入端以及信号输出接口连接；所述比较放大器的输出端与所述信号输出接口连接。
  9. 根据权利要求8所述的液晶显示面板，其中所述比较放大器根据所述第一输入端的扫描信号，对所述第二输入端的扫描信号进行对比，从而生成校准系数并从所述输出端将所述校准系数输出。
  10. 根据权利要求9所述的液晶显示面板，其中所述信号输出接口根据所述校准系数，对所述第二输入端的扫描信号进行校准，并将校准后的所述第二输入端的扫描信号从所述信号输出接口输出至相应的所述扫描线上。
  11. 根据权利要求6所述的液晶显示面板，其中所述扫描线逐行将相应的所述扫描信号输入至像素单元进行显示驱动。
  12. 一种液晶显示装置，其包括背光源以及液晶显示面板；其中所述液晶显示面板包括：
    数据线；
    扫描线；
    像素单元，由所述数据线和所述扫描线交错形成；
    数据驱动芯片，与所述数据线连接，用于给所述数据线输入数据信号；
    扫描驱动芯片组，包括至少两个扫描驱动芯片，与相应的所述扫描线连接，用于给所述扫描线输入扫描信号；以及
    比较单元，分别与至少两个所述扫描驱动芯片连接，用于根据一所述扫描驱动芯片输出的所述扫描信号，对另一扫描驱动芯片输出的扫描信号进行信号补偿，以使得两个所述扫描驱动芯片输出的扫描信号的差值小于设定值。
  13. 根据权利要求12所述的液晶显示装置，其中对输出所述扫描信号较晚的所述扫描驱动芯片输出的所述扫描信号进行信号补偿。
  14. 根据权利要求13所述的液晶显示装置，其中所述比较单元包括比较放大器，输出所述扫描信号较早的所述扫描驱动芯片通过延时器与所述比较放大器的第一输入端连接；输出所述扫描信号较晚的所述扫描驱动芯片，分别与所述比较放大器的第二输入端以及信号输出接口连接；所述比较放大器的输出端与所述信号输出接口连接。
  15. 根据权利要求14所述的液晶显示装置，其中所述比较放大器根据所述第一输入端的扫描信号，对所述第二输入端的扫描信号进行对比，从而生成校准系数并从所述输出端将所述校准系数输出。
  16. 根据权利要求15所述的液晶显示装置，其中所述信号输出接口根据所述校准系数，对所述第二输入端的扫描信号进行校准，并将校准后的所述第二输入端的扫描信号从所述信号输出接口输出至相应的所述扫描线上。
  17. 根据权利要求12所述的液晶显示装置，其中所述扫描线逐行将相应的所述扫描信号输入至像素单元进行显示驱动。
PCT/CN2015/072127 2015-01-29 2015-02-03 液晶显示面板及液晶显示装置 Ceased WO2016119271A1 (zh)

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