WO2013181861A1 - 一种显示面板及平板显示装置的驱动方法 - Google Patents

一种显示面板及平板显示装置的驱动方法 Download PDF

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Publication number
WO2013181861A1
WO2013181861A1 PCT/CN2012/076834 CN2012076834W WO2013181861A1 WO 2013181861 A1 WO2013181861 A1 WO 2013181861A1 CN 2012076834 W CN2012076834 W CN 2012076834W WO 2013181861 A1 WO2013181861 A1 WO 2013181861A1
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WIPO (PCT)
Prior art keywords
scan
wires
data
driving chip
output end
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PCT/CN2012/076834
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English (en)
French (fr)
Inventor
郑华
陈政鸿
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深圳市华星光电技术有限公司
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Priority to US13/522,700 priority Critical patent/US20130321362A1/en
Publication of WO2013181861A1 publication Critical patent/WO2013181861A1/zh

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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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0421—Structural details of the set of electrodes
    • G09G2300/0426—Layout of electrodes and connections
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0223—Compensation for problems related to R-C delay and attenuation in electrodes of matrix panels, e.g. in gate electrodes or on-substrate video signal electrodes
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen

Definitions

  • the present invention relates to the field of flat panel display, and in particular to a display panel and a driving method of the flat panel display device.
  • the flat panel display has the characteristics of flatness, lightness, thinness, power saving, etc., and gradually replaces the conventional video image display to become a mainstream display device.
  • users are increasingly demanding flat panel displays to achieve a better visual experience.
  • the parameters affecting the display performance of the flat panel display mainly include contrast, brightness, viewing angle, reaction time, etc., especially the brightness of the display panel, which is an important indicator for measuring the quality of the flat panel display device.
  • the brightness of the display panel depends on the backlight source, and the wiring of the driver chip of the display panel is also an important factor affecting the brightness.
  • the flat panel display device includes a display panel 11, a printed circuit board 12, and a source driver chip (Source). IC) 13 and first and second gate driving chips (Gate IC) 14 and 15.
  • the printed circuit board 12 and the source driving chip 13 are disposed on the side of a data line (not shown) of the vertical display panel, and the source driving chip 13 is electrically connected to the printed circuit board 12.
  • the first and second gate driving chips 14 and 15 are disposed on one side of a gate line (not shown) of the vertical display panel.
  • the first gate driving chip 14 is closer to the outermost source driving chip 13, and the second gate driving chip 15 is farther from the outermost source driving chip 13.
  • the third and fourth gate driving chips 16 and 17 and the first and second gate driving chips 14 and 15 are bilaterally symmetrically distributed on the display panel 11 or may be distributed on the same side of the display panel 11.
  • the existing wiring method is: the printed circuit board 12 is first and second.
  • the gate driving chip supplies a gate driving signal VGH, and VGH is input to the first gate driving chip 14 via the metal wire 1.
  • the first gate driving chip 14 outputs VGH, and VGH is input to the second gate driving chip 15 via the metal wire 2.
  • the gate driving signal VGH is transmitted to the second gate driving chip 15 more than a metal wire 2 is transmitted to the first gate driving chip 14, and the metal wire 2 brings additional Resistance and parasitic capacitance. Therefore, the amplitude and waveform of the VGH signals input to the second gate driving chip 15 and the first gate driving chip 14 respectively are different, as shown in FIG. 3, wherein the pattern 21 indicates that the VGH signal is input to the first gate driving.
  • the amplitude and waveform of the chip 14 and the graph 22 represent the amplitude and waveform of the VGH signal input to the second gate driver chip 15. Since the input signals of the first and second gate driving chips 14 and 15 are different, the amplitude and waveform of the corresponding output also differ, as shown in FIG.
  • the graphic 23 represents the output of the first gate driving chip 14.
  • the amplitude and waveform diagram, the graph 24 represents the output amplitude and waveform of the second gate drive chip 15.
  • the first gate driving chip 14 and the second gate driving chip 15 have different amplitudes and waveforms on the input and output, so that the brightness of the display panel 11 in the display area controlled by the second gate driving chip 15 is different from the first
  • the brightness of the display area controlled by a gate driving chip 14 is generally that the brightness of the former is smaller than the brightness of the latter, and generally the gate lines of most display panels are horizontally designed, so that the brightness of the display panel 11 is longitudinally distributed. The uneven distribution of brightness affects the display effect of the display panel.
  • the technical problem to be solved by the present invention is to provide a display panel and a driving method of the flat panel display device, which can more uniformly distribute the brightness of the display panel and improve the display effect.
  • a technical solution adopted by the present invention is to provide a display panel including a scan line, a data line, a data driving chip, and at least two scan driving chips; the scan lines are horizontally distributed, and the data lines are vertical.
  • the data driving chip is disposed on one side of the vertical data line direction, and the scanning driving chip is disposed on one side of the vertical scanning line direction;
  • the data driving chip includes a first scanning signal input end, a data signal input end, and a first scan signal output And a data signal output end;
  • the scan driving chip includes a second scan signal input end and a second scan signal output end; the second scan signal input end of each scan drive chip passes through the corresponding wire and the first scan signal of the data drive chip
  • the output ends are connected, at least the resistances of the wires corresponding to the two scan driving chips are equal or the difference is less than a predetermined value;
  • the scan lines are connected to the second scan signal output end of the scan driving chip, and the data lines are connected to the data signal output end of the data driving chip. ; all wires have equal or less than equal resistance Value.
  • all the wires comprise a common portion and a branch portion; the number of branch portions of the wires is consistent with the number of scan driving chips, and the common portion of one wire corresponds to the branch portions of at least two wires; the common portion of the wires is connected to the data driving chip at one end The first scan signal output end is connected to one end of the branch portion of the at least two wires, and the other end of the branch portion of each wire is connected to the second scan signal input end of the corresponding scan driver chip.
  • the number of common parts of the wires is one, and the resistivity and length of the branches of all the wires are equal.
  • a common portion of the wires passes through a scan driving chip.
  • the at least one scan driving chip includes a third input end and a third output end, and at least one transmission circuit enters the scan driving chip through the third input end, and passes through the scan driving chip through the third output end.
  • a flat panel display device including a display panel; the display panel includes a scan line, a data line, a data driving chip, and at least two scan driving chips; Directional distribution, data lines are vertically distributed; the data driving chip is disposed on one side of the vertical data line direction, and the scanning driving chip is disposed on one side of the vertical scanning line direction; the data driving chip includes a first scanning signal input end and a data signal input end a first scan signal output end and a data signal output end; the scan drive chip includes a second scan signal input end and a second scan signal output end; and the second scan signal input end of each scan drive chip is driven by a corresponding wire and data The first scan signal output end of the chip is connected, at least the resistances of the wires corresponding to the two scan drive chips are equal or the difference is less than a predetermined value; the scan line is connected with the second scan signal output end of the scan drive chip, and the data line and the data drive chip are connected
  • the resistances of all the wires are equal or the difference is less than a predetermined value.
  • all the wires comprise a common portion and a branch portion; the number of branch portions of the wires is consistent with the number of scan driving chips, and the common portion of one wire corresponds to the branch portions of at least two wires; the common portion of the wires is connected to the data driving chip at one end The first scan signal output end is connected to one end of the branch portion of the at least two wires, and the other end of the branch portion of each wire is connected to the second scan signal input end of the corresponding scan driver chip.
  • the number of common parts of the wires is one, and the resistivity and length of the branches of all the wires are equal.
  • a common portion of the wires passes through a scan driving chip.
  • the at least one scan driving chip includes a third input end and a third output end, and at least one transmission circuit enters the scan driving chip through the third input end, and passes through the scan driving chip through the third output end.
  • another technical solution adopted by the present invention is to provide a driving method of a flat panel display device, comprising providing a scan driving signal to at least two scan driving chips through respective wires having equal resistances or different values smaller than a predetermined value.
  • Driving the pixel switch to open; providing a data driving signal to the data driving chip after the pixel switch is turned on, so that the data driving signal enters the corresponding pixel operating element through the opened pixel switch.
  • the step of providing the scan driving signals to the at least two scan driving chips through the corresponding wires having the same resistance or the difference is less than the predetermined value is specifically: through the corresponding wires whose resistances are equal or the difference is less than the predetermined value, and via a data driving chip At least two scan driver chips provide scan drive signals.
  • all the wires comprise a common portion and a branch portion; the number of branch portions of the wires is consistent with the number of scan driving chips, and the common portion of one wire corresponds to the branch portions of at least two wires.
  • the common portion of the wires is one, and after passing through one scan driving chip, the branch portions of all the wires have the same resistivity and length.
  • the invention has the beneficial effects that the scanning signal input end of each scanning driving chip is connected to the scanning signal output end of the data driving chip through corresponding wires, and the resistances of the wires corresponding to at least two scanning driving chips are equal or poor.
  • the value is less than the predetermined value, so that the signal input amplitude and the waveform of the at least two scan driving chips are consistent, thereby reducing or even eliminating the phenomenon that the brightness of the display panel is longitudinally distributed, so that the brightness is more evenly distributed, and the display effect of the display panel is improved.
  • FIG. 1 is a schematic diagram of wiring of a driving chip of a display panel in the prior art
  • Figure 2 is an enlarged schematic view of a broken line portion of Figure 1;
  • FIG. 3 is an input amplitude and waveform diagram of the first gate driving chip and the second gate driving chip in the wiring mode shown in FIG. 2 in the prior art;
  • FIG. 4 is an output amplitude and waveform diagram of the first gate driving chip and the second gate driving chip in the wiring mode shown in FIG. 2 in the prior art;
  • FIG. 5 is a schematic structural view of an embodiment of a display panel of the present invention.
  • Fig. 6 is a flow chart showing an embodiment of a driving method of the flat panel display device of the present invention.
  • the display panel of the invention can reduce or even eliminate the phenomenon that the brightness is distributed longitudinally, so that the brightness is more evenly distributed, and the display effect of the display panel is improved.
  • an embodiment of the display panel of the present invention includes a scan line 106, a data line 107, a data drive chip 101, first and second scan drive chips 102 and 103, and a printed circuit board 105.
  • the scanning lines 106 are distributed in the horizontal direction, and the data lines 107 are distributed in the vertical direction.
  • the data driving chip 101, the first scan driving chip 102, and the second scan driving chip 103 are disposed in the side region 104 of the display panel.
  • the data line 107 of the display panel of the present embodiment is designed in the vertical direction (vertical direction)
  • the scanning line 106 is designed in the horizontal direction (horizontal direction)
  • the data driving chip 101 is disposed on one side of the vertical data line 107 direction
  • the first and second scanning driving chips are provided.
  • 102 and 103 are disposed on one side of the direction of the vertical scanning line 106.
  • the data driving chip 101 includes a first scan signal input terminal 1011, a data signal input terminal 1012, a first scan signal output terminal 1013, and a data signal output terminal 1014.
  • the scan driving chip takes the first scan driving chip 102 as an example, and includes a second scan signal input end 1021 and a second scan signal output end 1022. Since the printed circuit board 105 that supplies the data driving signal and the scan driving signal to the data driving chip 101 and the first and second scanning driving chips 102 and 103 is connected to the data driving chip 101, a scan driving is required on the data driving chip 101.
  • the input and output of the signal that is, the first scan signal input terminal 1011 and the first scan signal output terminal 1013, enable the scan drive signal to be transmitted to the first and second scan drive chips 102 and 103 through the data drive chip 101.
  • the second scan signal input end 1021 of the first scan driving chip 102 is connected to the first scan signal output end 1013 of the data driving chip 101 through the wire 201, and the second scan signal output end 1022 is connected to the scan line 106 for scanning.
  • the line 106 provides a scan driving signal;
  • the second scan signal input terminal 1031 of the second scan driving chip 103 is connected to the first scan signal output terminal 1013 of the data driving chip 101 via a wire 202.
  • the first scan signal input terminal 1011 and the data signal input terminal 1012 of the data driving chip are connected to the printed circuit board 105, and the data signal output terminal 1014 is connected to the data line 107 to supply the data driving signal to the data line 107.
  • the scan driving signal is input through the first scan signal input terminal 1011 of the data driving chip 101, passes through the data driving chip 101 and is from the first The scan signal output terminal 1013 outputs and then respectively transmitted to the first and second scan driving chips 102 and 103 through the wire 201 and the wire 202, respectively, and the first and second scan driving chips 102 and 103 pass through the second scan signal output terminal 1022.
  • Scan line 106 provides a scan drive signal.
  • both the wire 201 and the wire 202 include a common portion and a branch portion.
  • the wire 201 is composed of a main conductor 2011 and a first branch conductor 2012
  • the conductor 202 is composed of a main conductor 2011 and a second branch conductor 2021.
  • the main wire 2011 serves as a common portion of the wire 201 and the wire 202
  • the first branch wire 2012 corresponds to a branch portion of the wire 201
  • the second branch wire 2021 corresponds to a branch portion of the wire 202.
  • the main lead 2011 passes through the first scan driving chip 102.
  • the first scan driving chip 102 further includes a third input end 1023 and a third output end 1024.
  • the main line 2011 enters the first scan driving chip 102 through the third input end 1023.
  • the first scan driver chip 102 is then passed through the third output 1024.
  • One end of the main wire 2011 is connected to the first scan signal output terminal 1013 of the data driving chip 101, and the other end is connected to one end of the first branch wire 2012 and the second branch wire 2021.
  • the other ends of the first branch wire 2012 and the second branch wire 2021 are respectively connected to the second scan signal input end 1021 of the first scan driving chip 102 and the second scan signal input end 1031 of the second scan driving chip 103.
  • the resistivity and the length of the first branch wire 2012 and the second branch wire 2021 are equal, so that the resistances of the wire 201 and the wire 202 are equal.
  • the difference between the resistances of the wires 201 and the wires 202 may be allowed, and two The resistance difference needs to be less than a predetermined value.
  • the setting of the predetermined value is determined according to the actual situation. For example, in order to achieve a more uniform display effect, the setting is as small as possible, limited to the technical level and the technical level.
  • the number of scan driving chips of the present invention is at least two.
  • the scan driving chips of this embodiment are exemplified by two, which are first and second scan driving chips 102 and 103 respectively, and branches of corresponding wires.
  • the number of parts is also two, which are the first branch wire 2012 and the second branch wire 2021, respectively, that is, the branch portion of the wire is consistent with the number of scan driving chips.
  • a common portion of one wire corresponds to a branch portion of the two wires.
  • a main conductor line 2011 is connected to the first branch wire 2012 and the second branch wire 2021.
  • the scan driving signal is transmitted through the main line 2011 and then transmitted to the first scan driving chip 102 and the second scan driving chip 103 through the first branch wire 2012 and the second branch wire 2021, respectively.
  • the first branch conductor 2012 and the second branch conductor 2021 are equal electrical resistivity and length, such that the resistances of the conductors 201 and the conductors 202 are equal or less than a predetermined value, thereby causing the first scan driving chip 102 and the second scan.
  • the signal input amplitude and waveform of the driving chip 103 are as identical as possible, thereby reducing or even eliminating the longitudinal distribution of the brightness of the display panel, improving the uniformity of the brightness of the display panel, and improving the display effect.
  • the number of scan driving chips may also be three or more, and the number of branch portions of the wires is correspondingly three or more, and at this time, the common portion of the wires corresponds to at least the branch portions of the three wires.
  • the number of scan driving chips may also be three or more, and the number of branch portions of the wires is correspondingly three or more, and at this time, the common portion of the wires corresponds to at least the branch portions of the three wires.
  • the resistances of the three wires composed of the main conductor and the three branch wires are equal or less than a predetermined value, and the three branch wires are The resistivity and length are equal.
  • two or more main conductors may be disposed such that the two or more main conductors correspond to more branch conductors than the main conductor, and of course, the resistance of each of the main conductors and the branch conductors is equal or poor.
  • the value needs to be less than the predetermined value.
  • the number of data driving chips in this embodiment may also be multiple, which is not specifically limited herein.
  • the scanning driving signal is transmitted by the data driving chip closest to the scanning driving chip.
  • the common portion of the wires may not pass through the scan driving chip, and even the scan driving signal may be directly input from the printed circuit board into the scan driving chip without passing through the data driving chip.
  • An embodiment of the flat panel display device of the present invention includes the display panel as described in the above embodiments, and the flat panel display device of the present embodiment may be a display type flat panel display device such as a liquid crystal display, a plasma display or an organic light emitting diode display.
  • an embodiment of a driving method of a flat panel display device includes the following steps:
  • Step S101 providing a scan driving signal to at least two scan driving chips through respective wires having equal resistances or different values smaller than a predetermined value to drive the pixel switches to be turned on.
  • the printed circuit board is connected to the display panel through the data driving chip, and the scanning circuit board supplies the scanning driving signals to the at least two scanning driving chips via the corresponding wires of the resistors having the same or different difference of less than the predetermined value and via the data driving chip.
  • All of the wires include a common portion and a branch portion, and the number of branch portions of the wires is identical to the number of scan driving chips, and the number of common portions of the wires is one and passes through a scan driving chip, and a common portion of one of the wires corresponds to The branching portion of at least two wires.
  • the number of scan driving chips is at least two
  • the number of branch portions of the wires is at least two
  • at least two paths are formed by the common portions of the wires and the branch portions of the at least two wires, respectively, so that the scan driving signal passes.
  • At least two paths are transmitted to at least two scan driver chips.
  • the scan driving signal is transmitted to the first scan driving chip 102 via the wire 201; the scan driving signal is transmitted to the second scan driving through the wire 202.
  • the chip 103 thereby driving the pixel switch to open.
  • the wire 201 is composed of a main line 2011 and a first branch wire 2012
  • the wire 202 is composed of a main line 2011 and a second branch wire 2021.
  • the main wire 2011 serves as a common portion of the wire 201 and the wire 202
  • the first branch wire 2012 corresponds to a branch portion of the wire 201
  • the second branch wire 2021 corresponds to a branch portion of the wire 202.
  • the first branch wire 2012 and the second branch wire 2021 are equal in electrical resistivity and length such that the resistance of the wire 201 and the wire 202 are equal, or the difference in resistance between the two is less than a predetermined value.
  • Step S102 After the pixel switch is turned on, the data driving chip is provided with a data driving signal, so that the data driving signal enters the corresponding pixel operating element through the opened pixel switch.
  • step S101 the scan driving signal is input to the scan driving chip to drive the opening of the pixel switch.
  • the data driving signal provided by the data driving chip enters the corresponding pixel operating element through the opened pixel switch, for example, entering the liquid crystal display device.
  • a pixel electrode is used to drive the display of the flat panel display device.
  • the driving signals are supplied to the at least two scan driving chips through the respective wires having the same resistance or the difference is less than the predetermined value, so that the signal input amplitudes and waveforms of the at least two scan driving chips are consistent. It can improve the uniformity of the brightness of the flat panel display device and improve the display effect.

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  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
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Abstract

一种显示面板，包括数据驱动芯片（101）和至少两个扫描驱动芯片（102，103）；在数据驱动芯片（101）设置有第一扫描信号输入（1011）、输出端（1013），在扫描驱动芯片设置有第二扫描信号输入（1021）、输出端（1022）；使各扫描驱动芯片（102，103）的第二扫描信号输入端（1021，1031）均通过相应的导线与数据驱动芯片的第一扫描信号输出端（1013）连接，至少对应两个所述扫描驱动芯片（102，103）的导线的电阻相等或差值小于预定值。还提供一种平板显示装置及其驱动方法。该显示面板亮度更均匀分布。

Description

一种显示面板及平板显示装置的驱动方法
【技术领域】
本发明涉及平板显示领域，特别是涉及一种显示面板及平板显示装置的驱动方法。
【背景技术】
平板显示器具有平面化、轻、薄、省电等特点，使其逐渐代替传统的视频图像显示器而成为主流的显示装置。随着显示技术的不断发展，用户对平板显示器的要求也越来越高，以能获得更好的视觉体验效果。
影响平板显示器显示效果的参数主要有对比度、亮度、可视角度、反应时间等，尤其是显示面板的亮度，更是做为衡量平板显示装置好坏的一个重要指标。而显示面板的亮度除了取决于背光光源，显示面板的驱动芯片的布线也是影响亮度的重要因素。
参阅图1和图2，平板显示装置包括显示面板11、印刷电路板12、源极驱动芯片（Source IC）13以及第一、第二栅极驱动芯片（Gate IC）14和15。印刷电路板12和源极驱动芯片13设置在垂直显示面板的数据线（图未示）一侧，源极驱动芯片13与印刷电路板12电连接。第一、第二栅极驱动芯片14和15设置在垂直显示面板的栅极线（图未示）的一侧。第一栅极驱动芯片14距离最外侧的源极驱动芯片13较近，第二栅极驱动芯片15距离最外侧的源极驱动芯片13较远。第三、第四栅极驱动芯片16和17与第一、第二栅极驱动芯片14和15在显示面板11双边对称分布，也可以分布在显示面板11同一侧。
继续参阅图1和图2，对于上述的驱动芯片的布局，以第一、第二栅极驱动芯片14和15的布线为例，现有布线方法为：印刷电路板12向第一、第二栅极驱动芯片提供栅极驱动信号VGH，VGH经过金属导线1输入到第一栅极驱动芯片14。第一栅极驱动芯片14输出VGH，VGH经过金属导线2输入到第二栅极驱动芯片15。
现有的驱动芯片的布线中，栅极驱动信号VGH传输到第二栅极驱动芯片15比传输到第一栅极驱动芯片14要多经过一段金属导线2，而金属导线2会带来额外的电阻和寄生电容。因此，VGH信号分别输入到第二栅极驱动芯片15和第一栅极驱动芯片14的幅值和波形均有差别，如图3所示，其中图形21表示VGH信号输入到第一栅极驱动芯片14的幅值和波形图，图形22表示VGH信号输入到第二栅极驱动芯片15的幅值和波形图。由于第一、第二栅极驱动芯片14和15的输入信号有差别，对应地输出的幅值和波形也存在差异，如图4所示，其中图形23表示第一栅极驱动芯片14的输出幅值和波形图，图形24表示第二栅极驱动芯片15的输出幅值和波形图。第一栅极驱动芯片14和第二栅极驱动芯片15在输入和输出的幅值、波形上均存在差异，使得显示面板11在第二栅极驱动芯片15控制的显示区域的亮度不同于第一栅极驱动芯片14控制的显示区域的亮度，通常是前者的亮度小于后者亮度，而一般大部分显示面板的栅极线都是横向设计，因此会造成显示面板11的亮度呈纵向分布，亮度的不均匀分布影响了显示面板的显示效果。
【发明内容】
本发明主要解决的技术问题是提供一种显示面板及平板显示装置的驱动方法，能够使显示面板亮度更均匀分布，提高显示效果。
为解决上述技术问题，本发明采用的一个技术方案是：提供一种显示面板，显示面板包括扫描线、数据线、数据驱动芯片以及至少两个扫描驱动芯片；扫描线水平方向分布，数据线垂直方向分布；数据驱动芯片设置于垂直数据线方向的一侧，扫描驱动芯片设置于垂直扫描线方向的一侧；数据驱动芯片包括第一扫描信号输入端、数据信号输入端、第一扫描信号输出端以及数据信号输出端；扫描驱动芯片包括第二扫描信号输入端以及第二扫描信号输出端；各个扫描驱动芯片的第二扫描信号输入端均通过相应的导线与数据驱动芯片的第一扫描信号输出端连接，至少对应两个扫描驱动芯片的导线的电阻相等或差值小于预定值；扫描线与扫描驱动芯片的第二扫描信号输出端连接，数据线与数据驱动芯片的数据信号输出端连接；所有导线的电阻相等或差值小于预定值。
其中，所有导线均包括共同部分和分支部分；导线的分支部分的数量与扫描驱动芯片的数量一致，一根导线的共同部分对应至少两根导线的分支部分；导线的共同部分一端连接数据驱动芯片的第一扫描信号输出端，另一端连接至少两根导线的分支部分的一端，每根导线的分支部分的另一端连接相应的扫描驱动芯片的第二扫描信号输入端。
其中，导线的共同部分数量为一，所有导线的分支部分电阻率、长度均相等。
其中，导线的共同部分经过一个扫描驱动芯片。
其中，至少一个扫描驱动芯片包括第三输入端和第三输出端，至少一条传输电路通过第三输入端进入扫描驱动芯片，通过第三输出端穿出扫描驱动芯片。
为解决上述技术问题，本发明采用的另一个技术方案是：提供一种平板显示装置，包括显示面板；显示面板包括扫描线、数据线、数据驱动芯片以及至少两个扫描驱动芯片；扫描线水平方向分布，数据线垂直方向分布；数据驱动芯片设置于垂直数据线方向的一侧，扫描驱动芯片设置于垂直扫描线方向的一侧；数据驱动芯片包括第一扫描信号输入端、数据信号输入端、第一扫描信号输出端以及数据信号输出端；扫描驱动芯片包括第二扫描信号输入端以及第二扫描信号输出端；各个扫描驱动芯片的第二扫描信号输入端均通过相应的导线与数据驱动芯片的第一扫描信号输出端连接，至少对应两个扫描驱动芯片的导线的电阻相等或差值小于预定值；扫描线与扫描驱动芯片的第二扫描信号输出端连接，数据线与数据驱动芯片的数据信号输出端连接。
其中，所有导线的电阻相等或差值小于预定值。
其中，所有导线均包括共同部分和分支部分；导线的分支部分的数量与扫描驱动芯片的数量一致，一根导线的共同部分对应至少两根导线的分支部分；导线的共同部分一端连接数据驱动芯片的第一扫描信号输出端，另一端连接至少两根导线的分支部分的一端，每根导线的分支部分的另一端连接相应的扫描驱动芯片的第二扫描信号输入端。
其中，导线的共同部分数量为一，所有导线的分支部分电阻率、长度均相等。
其中，导线的共同部分经过一个扫描驱动芯片。
其中，至少一个扫描驱动芯片包括第三输入端和第三输出端，至少一条传输电路通过第三输入端进入扫描驱动芯片，通过第三输出端穿出扫描驱动芯片。
为解决上述技术问题，本发明采用的又一个技术方案是：提供一种平板显示装置的驱动方法，包括通过电阻相等或差值小于预定值的相应导线向至少两个扫描驱动芯片提供扫描驱动信号，以驱动像素开关打开；在像素开关打开后向数据驱动芯片提供数据驱动信号，以使数据驱动信号通过打开的像素开关进入相应的像素操作元件。
其中，通过电阻相等或差值小于预定值的相应导线向至少两个扫描驱动芯片提供扫描驱动信号的步骤具体为：通过电阻相等或差值小于预定值的相应导线、并经由一个数据驱动芯片向至少两个扫描驱动芯片提供扫描驱动信号。
其中，所有导线均包括共同部分和分支部分；导线的分支部分的数量与扫描驱动芯片的数量一致，一根导线的共同部分对应至少两根导线的分支部分。
其中，导线的共同部分数量为一，且经过一个扫描驱动芯片，所有导线的分支部分电阻率、长度均相等。
本发明的有益效果是：本发明通过相应的导线将各个扫描驱动芯片的扫描信号输入端与数据驱动芯片的扫描信号输出端连接，并且使至少对应两个扫描驱动芯片的导线的电阻相等或差值小于预定值，使得至少两个扫描驱动芯片的信号输入幅值和波形一致，由此能够减少或甚至消除显示面板的亮度呈纵向分布的现象，使亮度更均匀分布，提高显示面板的显示效果。
【附图说明】
图1是现有技术中一种显示面板的驱动芯片的布线示意图；
图2是图1中虚线部分的放大示意图；
图3是现有技术中第一栅极驱动芯片和第二栅极驱动芯片在图2所示的布线方式下的输入幅值和波形图；
图4是现有技术中第一栅极驱动芯片和第二栅极驱动芯片在图2所示的布线方式下的输出幅值和波形图；
图5是本发明显示面板的一实施例的结构示意图；
图6是本发明平板显示装置的驱动方法的一实施例的流程图。
【具体实施方式】
本发明的显示面板能够减少甚至消除亮度呈纵向分布的现象，使亮度更均匀分布，提高显示面板的显示效果。
下面将结合附图和实施例对本发明进行详细地描述。
参阅图5，本发明的显示面板的一实施例包括扫描线106、数据线107、数据驱动芯片101、第一、第二扫描驱动芯片102和103以及印刷电路板105。扫描线106水平方向分布，数据线107垂直方向分布。数据驱动芯片101、第一扫描驱动芯片102和第二扫描驱动芯片103设置于显示面板的侧边区域104。本实施例的显示面板的数据线107纵向（垂直方向）设计，扫描线106横向（水平方向）设计，数据驱动芯片101设置于垂直数据线107方向的一侧，第一、第二扫描驱动芯片102和103设置于垂直扫描线106方向的一侧。
数据驱动芯片101包括第一扫描信号输入端1011、数据信号输入端1012、第一扫描信号输出端1013以及数据信号输出端1014。扫描驱动芯片以第一扫描驱动芯片102为例，包括第二扫描信号输入端1021以及第二扫描信号输出端1022。由于向数据驱动芯片101和第一、第二扫描驱动芯片102和103提供数据驱动信号和扫描驱动信号的印刷电路板105与数据驱动芯片101连接，因此，在数据驱动芯片101上需设置扫描驱动信号的输入端和输出端，即第一扫描信号输入端1011和第一扫描信号输出端1013，以使扫描驱动信号通过数据驱动芯片101传输至第一、第二扫描驱动芯片102和103。
具体地，第一扫描驱动芯片102的第二扫描信号输入端1021通过导线201与数据驱动芯片101的第一扫描信号输出端1013连接，第二扫描信号输出端1022与扫描线106连接以向扫描线106提供扫描驱动信号；第二扫描驱动芯片103的第二扫描信号输入端1031通过导线202与数据驱动芯片101的第一扫描信号输出端1013连接。数据驱动芯片的第一扫描信号输入端1011和数据信号输入端1012与印刷电路板105连接，数据信号输出端1014与数据线107连接以向数据线107提供数据驱动信号。当印刷电路板105向第一、第二扫描驱动芯片102和103提供扫描驱动信号时，扫描驱动信号经数据驱动芯片101的第一扫描信号输入端1011输入，经过数据驱动芯片101并从第一扫描信号输出端1013输出，然后分别通过导线201和导线202分别传输至第一、第二扫描驱动芯片102和103，第一、第二扫描驱动芯片102和103通过第二扫描信号输出端1022向扫描线106提供扫描驱动信号。印刷电路板105向数据驱动芯片101提供数据驱动信号时，数据驱动信号直接由数据信号输入端1012输入至数据驱动芯片101，然后由数据信号输出端1014输出至数据线107。
其中，导线201和导线202的电阻相等。导线201和导线202均包括共同部分和分支部分。如图5所示，导线201由主导线2011和第一分支导线2012组成，导线202由主导线2011和第二分支导线2021组成。主导线2011作为导线201和导线202的共同部分，第一分支导线2012对应为导线201的分支部分，第二分支导线2021对应为导线202的分支部分。主导线2011经过第一扫描驱动芯片102，此时第一扫描驱动芯片102还包括第三输入端1023以及第三输出端1024，主导线2011通过第三输入端1023进入第一扫描驱动芯片102，然后通过第三输出端1024穿出第一扫描驱动芯片102。主导线2011的一端连接数据驱动芯片101的第一扫描信号输出端1013，另一端连接至第一分支导线2012和第二分支导线2021的一端。第一分支导线2012和第二分支导线2021的各另一端分别连接第一扫描驱动芯片102的第二扫描信号输入端1021以及第二扫描驱动芯片103的第二扫描信号输入端1031。并且，第一分支导线2012和第二分支导线2021的电阻率、长度均相等，以使得导线201和导线202的电阻相等。本领域技术人员可以理解的是，在实际情况中，受各种因素的影响，若难以使得两根导线的电阻完全相等，此时，可以允许导线201和导线202的电阻存在差值，并且两者电阻差值需小于预定值。此预定值的设定按实际情况确定，比如为实现显示效果更均匀的目的，尽量设置小一些，以技术水平和工艺水平为限。
值得注意的是，本发明的扫描驱动芯片的数量至少为两个，本实施例的扫描驱动芯片以两个为例，分别为第一、第二扫描驱动芯片102和103，对应的导线的分支部分的数量也为两根，分别为第一分支导线2012和第二分支导线2021，即导线的分支部分与扫描驱动芯片的数量一致。一根导线的共同部分对应着两个导线的分支部分，如图5所示，一根主导线2011同时连接着第一分支导线2012和第二分支导线2021。
本发明显示面板的实施例，扫描驱动信号先经过主导线2011传输，然后分别通过第一分支导线2012和第二分支导线2021传输至第一扫描驱动芯片102和第二扫描驱动芯片103。通过设计第一分支导线2012和第二分支导线2021的电阻率和长度均相等，以使得导线201和导线202的电阻相等或差值小于预定值，进而使得第一扫描驱动芯片102和第二扫描驱动芯片103的信号输入幅值和波形尽可能地相同，由此能够减少甚至消除显示面板的亮度呈纵向分布的情况，提高显示面板亮度的均匀性，提高显示效果。
当然，在更多实施例中，扫描驱动芯片的数量还可以是三个或以上，导线的分支部分的数量对应地为三根或以上，此时导线的共同部分至少对应三根导线的分支部分。举例而言，当扫描驱动芯片有三个时，一根主导线同时连接三根分支导线，并且由主导线分别和三根分支导线组成的三根导线的电阻相等或差值小于预定值，而三根分支导线的电阻率、长度均相等。甚至，可以设置两根或以上的主导线，使该两根或以上的主导线对应连接数量比主导线多的分支导线，当然由主导线和分支导线组成的各根导线的电阻相等或电阻差值需小于预定值。对于扫描驱动芯片数量的其他情况，此处不再一一赘述。当然，本实施例的数据驱动芯片的数量也可以为多个，在此不作具体限制，而当数据驱动芯片的数量为多个时，扫描驱动信号由最靠近扫描驱动芯片的数据驱动芯片传输。此外，导线的共同部分也可以不经过扫描驱动芯片，甚至，扫描驱动信号也可以不经过数据驱动芯片，而直接自印刷电路板输入扫描驱动芯片。
本发明平板显示装置的一实施例，包括如上述实施例所述的显示面板，并且本实施例的平板显示装置可以是液晶显示器、等离子显示器或有机发光二极管显示器等显示器类型的平板显示装置。
参阅图6，本发明一种平板显示装置的驱动方法的一实施例，包括步骤：
步骤S101；通过电阻相等或差值小于预定值的相应导线向至少两个扫描驱动芯片提供扫描驱动信号，以驱动像素开关打开。
具体地，印刷电路板通过数据驱动芯片与显示面板连接，由印刷电路板通过电阻相等或差值小于预定值的相应导线、并经由一个数据驱动芯片向至少两个扫描驱动芯片提供扫描驱动信号。
所有所述导线包括共同部分和分支部分，并且导线的分支部分的数量与扫描驱动芯片的数量一致，导线的共同部分数量为一根并且经过一个扫描驱动芯片，一根所述导线的共同部分对应至少两根导线的分支部分。
具体而言，扫描驱动芯片的数量至少为两个，导线的分支部分数量至少为两根，由导线的共同部分分别和至少两根导线的分支部分形成至少两条通路，以使得扫描驱动信号通过至少两条通路传输至至少两个扫描驱动芯片。以图5的显示面板实施例为例进行说明，并且以两个扫描驱动芯片为例，扫描驱动信号经过导线201传输至第一扫描驱动芯片102；扫描驱动信号经过导线202传输至第二扫描驱动芯片103，由此可驱动像素开关打开。其中，导线201由主导线2011和第一分支导线2012组成，导线202由主导线2011和第二分支导线2021组成。主导线2011作为导线201和导线202的共同部分，第一分支导线2012对应为导线201的分支部分，第二分支导线2021对应为导线202的分支部分。第一分支导线2012和第二分支导线2021的电阻率和长度均相等，以使得导线201和导线202的电阻相等，或者两者电阻差值小于预定值。
步骤S102：在所述像素开关打开后向数据驱动芯片提供数据驱动信号，以使所述数据驱动信号通过打开的像素开关进入相应的像素操作元件。
步骤S101中，扫描驱动信号输入扫描驱动芯片以驱动像素开关的打开，像素开关打开后，数据驱动芯片提供的数据驱动信号通过打开的像素开关进入相应的像素操作元件，比如进入液晶显示装置中的像素电极，以驱动平板显示装置显示。
本实施例的平板显示装置的驱动方法，通过电阻相等或差值小于预定值的相应导线向至少两个扫描驱动芯片提供驱动信号，使得至少两个扫描驱动芯片的信号输入幅值和波形一致，能够提高平板显示装置亮度的均匀性，提高显示效果。
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. 一种显示面板，其中：
    所述显示面板包括扫描线、数据线、数据驱动芯片以及至少两个扫描驱动芯片；
    所述扫描线水平方向分布，所述数据线垂直方向分布；
    所述数据驱动芯片设置于垂直数据线方向的一侧，所述扫描驱动芯片设置于垂直扫描线方向的一侧；
    所述数据驱动芯片包括第一扫描信号输入端、数据信号输入端、第一扫描信号输出端以及数据信号输出端；
    所述扫描驱动芯片包括第二扫描信号输入端以及第二扫描信号输出端；
    各个所述扫描驱动芯片的第二扫描信号输入端均通过相应的导线与数据驱动芯片的第一扫描信号输出端连接，至少对应两个所述扫描驱动芯片的导线的电阻相等或差值小于预定值；
    所述扫描线与所述扫描驱动芯片的第二扫描信号输出端连接，所述数据线与所述数据驱动芯片的数据信号输出端连接；
    所有所述导线的电阻相等或差值小于预定值。
  2. 根据权利要求1所述的显示面板，其中，
    所有所述导线均包括共同部分和分支部分；
    所述导线的分支部分的数量与扫描驱动芯片的数量一致，一根所述导线的共同部分对应至少两根导线的分支部分；
    所述导线的共同部分一端连接所述数据驱动芯片的第一扫描信号输出端，另一端连接至少两根导线的分支部分的一端，每根所述导线的分支部分的另一端连接相应的扫描驱动芯片的第二扫描信号输入端。
  3. 根据权利要求2所述的显示面板，其中，
    所述导线的共同部分数量为一，所有所述导线的分支部分电阻率、长度均相等。
  4. 根据权利要求3所述的显示面板，其中，
    所述导线的共同部分经过一个所述扫描驱动芯片。
  5. 根据权利要求4所述的显示面板，其中，
    所述至少一个扫描驱动芯片包括第三输入端和第三输出端，至少一条所述传输电路通过第三输入端进入扫描驱动芯片，通过第三输出端穿出扫描驱动芯片。
  6. 一种平板显示装置，其中，包括显示面板；
    所述显示面板包括扫描线、数据线、数据驱动芯片以及至少两个扫描驱动芯片；
    所述扫描线水平方向分布，所述数据线垂直方向分布；
    所述数据驱动芯片设置于垂直数据线方向的一侧，所述扫描驱动芯片设置于垂直扫描线方向的一侧；
    所述数据驱动芯片包括第一扫描信号输入端、数据信号输入端、第一扫描信号输出端以及数据信号输出端；
    所述扫描驱动芯片包括第二扫描信号输入端以及第二扫描信号输出端；
    各个所述扫描驱动芯片的第二扫描信号输入端均通过相应的导线与数据驱动芯片的第一扫描信号输出端连接，至少对应两个所述扫描驱动芯片的导线的电阻相等或差值小于预定值；
    所述扫描线与所述扫描驱动芯片的第二扫描信号输出端连接，所述数据线与所述数据驱动芯片的数据信号输出端连接；
  7. 根据权利要求6所述的平板显示装置，其中，
    所有所述导线的电阻相等或差值小于预定值。
  8. 根据权利要求7所述的平板显示装置，其中，
    所有所述导线均包括共同部分和分支部分；
    所述导线的分支部分的数量与扫描驱动芯片的数量一致，一根所述导线的共同部分对应至少两根导线的分支部分；
    所述导线的共同部分一端连接所述数据驱动芯片的第一扫描信号输出端，另一端连接至少两根导线的分支部分的一端，每根所述导线的分支部分的另一端连接相应的扫描驱动芯片的第二扫描信号输入端。
  9. 根据权利要求8所述的平板显示装置，其中，
    所述导线的共同部分数量为一，所有所述导线的分支部分电阻率、长度均相等。
  10. 根据权利要求9所述的平板显示装置，其中，
    所述导线的共同部分经过一个所述扫描驱动芯片。
  11. 根据权利要求10所述的平板显示装置，其中，
    所述至少一个扫描驱动芯片包括第三输入端和第三输出端，至少一条所述传输电路通过第三输入端进入扫描驱动芯片，通过第三输出端穿出扫描驱动芯片。
  12. 一种平板显示装置的驱动方法，其中，包括：
    通过电阻相等或差值小于预定值的相应导线向至少两个扫描驱动芯片提供扫描驱动信号，以驱动像素开关打开；
    在所述像素开关打开后向数据驱动芯片提供数据驱动信号，以使所述数据驱动信号通过打开的像素开关进入相应的像素操作元件。
  13. 根据权利要求12所述的方法，其中，
    所述通过电阻相等或差值小于预定值的相应导线向至少两个扫描驱动芯片提供扫描驱动信号的步骤具体为：通过电阻相等或差值小于预定值的相应导线、并经由一个数据驱动芯片向至少两个扫描驱动芯片提供扫描驱动信号。
  14. 根据权利要求12所述的方法，其中，
    所有所述导线均包括共同部分和分支部分；
    所述导线的分支部分的数量与扫描驱动芯片的数量一致，一根所述导线的共同部分对应至少两根导线的分支部分。
  15. 根据权利要求14所述的方法，其中，
    所述导线的共同部分数量为一，且经过一个所述扫描驱动芯片，所有所述导线的分支部分电阻率、长度均相等。
PCT/CN2012/076834 2012-06-05 2012-06-13 一种显示面板及平板显示装置的驱动方法 WO2013181861A1 (zh)

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