WO2016183934A1 - 一种显示装置 - Google Patents

一种显示装置 Download PDF

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Publication number
WO2016183934A1
WO2016183934A1 PCT/CN2015/085376 CN2015085376W WO2016183934A1 WO 2016183934 A1 WO2016183934 A1 WO 2016183934A1 CN 2015085376 W CN2015085376 W CN 2015085376W WO 2016183934 A1 WO2016183934 A1 WO 2016183934A1
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WO
WIPO (PCT)
Prior art keywords
display panel
leads
driving circuit
display device
lead
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PCT/CN2015/085376
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English (en)
French (fr)
Inventor
邢振周
熊彬
黄耀立
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武汉华星光电技术有限公司
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Application filed by 武汉华星光电技术有限公司 filed Critical 武汉华星光电技术有限公司
Priority to US14/897,679 priority Critical patent/US20180130426A1/en
Publication of WO2016183934A1 publication Critical patent/WO2016183934A1/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
    • 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
    • G09G3/3406—Control of illumination source
    • 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
    • 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
    • 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
    • G09G2300/043—Compensation electrodes or other additional electrodes in matrix displays related to distortions or compensation signals, e.g. for modifying TFT threshold voltage in column driver
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0264—Details of driving circuits
    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2370/00—Aspects of data communication
    • G09G2370/08—Details of image data interface between the display device controller and the data line driver circuit

Definitions

  • the present invention relates to the field of display technology, and in particular to a display device.
  • liquid crystal displays have become the most common display devices.
  • each pixel is controlled by a grid line and a data line which are criss-crossed on the substrate to realize display of an image.
  • the gate driving signal and the source driving signal are emitted from a driving circuit chip in the liquid crystal display, and the gate driving signal and the source driving signal are respectively transmitted to the substrate by using a chip on film (COF). Grid and data lines.
  • a COF is connected to a gate line or a data line of a display panel (Ative Area, AA for short) through a set of fanouts.
  • a plurality of lead wires 1 are included in a set of fan-shaped wires. Since the fan-shaped wires are generally fan-shaped, the length of the lead wires 1 at both ends of the fan-shaped wires is greater than the length of the lead wires 1 in the middle of the fan-shaped wires, so the resistance of the lead wires 1 at both ends is greater than the middle.
  • the resistance value of the lead 1 is large, and the waveforms of the gate driving signal or the source driving signal transmitted by the lead wires 1 at both ends are seriously distorted, which affects the uniformity of the gate driving signal or the source driving signal, thereby affecting the display of the display panel. Uniformity.
  • Embodiments of the present invention provide a display device including a display panel and a driving circuit disposed at a periphery of the display panel, the driving circuit including a plurality of output terminals arranged side by side, and the display panel corresponding to the driving circuit
  • the output end is provided with a plurality of input terminals arranged side by side, and the resistance between each output end of the driving circuit and the corresponding input end of the display panel is equal; or the output signal of each output end of the driving circuit is intermediate Gradually increase to both ends.
  • each output end of the driving circuit is connected to each input end of the display panel by a fan-shaped wire
  • the sector wire includes a plurality of leads, the length of the plurality of leads increasing from a middle to a both ends of the sector wire.
  • the resistances of the plurality of leads are equal.
  • the plurality of leads are formed with via holes, and the number of via holes on the plurality of leads decreases from the middle to the both ends of the fan-shaped wires, so that the resistances of the plurality of leads are equal.
  • each via has the same size.
  • the plurality of leads are provided with resistors, and the resistance values of the plurality of leads are decreased from the middle to the both ends of the fan-shaped wires, so that the resistances of the plurality of leads are equal.
  • the width of the plurality of leads is increased from the middle to the both ends of the fan-shaped wire, so that the resistances of the plurality of leads are equal.
  • each output end of the driving circuit has a resistor connected in series, and the resistance of the resistor connected in series is decreased by the middle to the both ends of the output terminals arranged side by side.
  • the display device further includes a linear operational amplification module disposed on a side of the driving circuit adjacent to the display panel, and output signals of the output ends of the driving circuit are input to the linear operational amplification module, and are arranged side by side. In the middle to the both ends of each output end, the linear operation amplification module increases the amplification degree of the output signals of the respective output ends.
  • the linear operation amplification module increases the amplification degree of the output signals of the respective output terminals linearly from the middle to the both ends of the output terminals arranged side by side.
  • the present invention provides the following beneficial effects:
  • the embodiment of the present invention provides a display device including a display panel and a driving circuit disposed around the periphery of the display panel.
  • the resistance values between the respective output ends of the driving circuit to the corresponding input ends of the display panel are equal, or the intensity of the driving signal is increased according to the attenuation degree of the driving signals after passing through the sector wires, thereby improving the display of the display panel. Uniformity.
  • FIG. 1 is a schematic structural view of a display device in the prior art
  • FIG. 2 is a schematic structural view of a sector wire in the first embodiment of the present invention.
  • FIG. 3 is a schematic structural view of a display device in a second embodiment of the present invention.
  • FIG. 4 is a schematic structural view of a display device in a third embodiment of the present invention.
  • Figure 5 is a view showing the relationship between the resistance of the lead wire and the lead length in the second and third embodiments of the present invention.
  • FIG. 6 is a schematic structural view of a display device in a fourth embodiment of the present invention.
  • Figure 7 is a schematic structural view of a display device in a fifth embodiment of the present invention.
  • Fig. 8 is a view showing the relationship between the degree of operation amplification and the length of the lead wire in the fifth embodiment of the present invention.
  • Embodiments of the present invention provide a display device including a display panel and a driving circuit disposed at a periphery of the display panel.
  • the driving circuit includes a plurality of output terminals arranged side by side, and the display panel is provided with a plurality of side by side corresponding to the driving circuit. Input. Wherein, the resistance between each output end of the driving circuit and the corresponding input end of the display panel is equal.
  • the gate driving circuit and the source driving circuit are not distinguished. Collectively referred to as the drive circuit.
  • the gate drive signal output by the gate drive circuit and the source drive signal output by the source drive circuit are also collectively referred to as drive signals.
  • the driving circuit has a plurality of output terminals, and the corresponding display panel has the same number of input terminals.
  • the driving circuit is disposed on a printed circuit board (PCB) which is much smaller than the display panel by circuit integration technology.
  • PCB printed circuit board
  • each output end of the driving circuit and each corresponding input end on the display panel are usually connected through a set of sector wires.
  • a set of sector wires includes a plurality of leads 1 because the fan-shaped wires are generally fan-shaped, and the length of the leads 1 at both ends of the sector wires is greater than the length of the leads 1 located in the middle of the sector wires.
  • the resistance value is determined by factors such as the cross-sectional area and length of the lead 1, and the cross-sectional areas of the lead wires 1 are the same in the prior art sector wires.
  • the lengths of the respective leads 1 are different, and when the materials of the respective leads 1 are the same, the resistance values of the respective leads 1 are different.
  • via holes 2 may be provided on the lead wires 1 to adjust the resistance values of the lead wires 1 so that the resistance values of the respective lead wires 1 are equal.
  • each of the via holes 2 if the size of each of the via holes 2 is the same, for each of the lead wires 1 in the fan-shaped wires, the number of the via holes 2 tends to decrease from the middle to the both ends.
  • the arc of the hole wall is used to lengthen the length of the lead 1 at the via 2, thereby increasing the resistance of the lead 1.
  • the via 2 can be disposed on the lead portion of the display panel, and further, since the drive circuit and the display panel are connected by COF, the via 2 can also be disposed on the lead portion on the COF. In the end, the resistance of each lead 1 can be made the same, thereby improving the uniformity of the screen display.
  • the two leads 1 at the two ends of the fan-shaped wire may not be provided with the via 2, and only a suitable number of vias 2 are provided on the remaining leads 1, so that the resistance values of the remaining leads 1 are the same as those of the two leads 1 at both ends. equal.
  • each lead 1 is the same.
  • a resistor having a suitable resistance value may be connected in series to each lead 1. 3.
  • the resistance of each of the resistors 3 for compensating the resistance of the lead 1 is linearly decreasing from the length of the lead 1, that is, the resistors connected in series from the middle to the both ends of the fan-shaped wires. The resistance of 3 is decremented in turn.
  • the two leads 1 at the ends of the sector wires may have no resistors 3 connected in series. By connecting an appropriate resistor 3 in series, the resistance of the remaining leads 1 is equal to the resistance of the two leads 1 at both ends, thereby improving the display uniformity of the display panel.
  • the resistor 3 may not be connected in series to each of the leads 1, but may be integrated in advance on an integrated circuit (IC) provided with a drive circuit.
  • IC integrated circuit
  • a set of parallel resistor strings 4 are integrally disposed at each output end of the driving circuit.
  • the resistor string 4 also changes linearly, and appears to be linearly decreasing from the middle to the both ends, that is, the longer the length of the lead 1, the smaller the resistance of the corresponding resistor in the resistor string 4. That is, for each output end of the driving circuit, the resistance values of the resistors connected in series from the middle to the both ends are sequentially decreased.
  • the linear resistance string 4 integrated in the IC is used to equalize the difference in the resistance of each lead 1 due to the difference in the length of the lead 1, thereby improving the uniformity of the display screen of the display panel.
  • the resistance value is inversely proportional to the cross-sectional area of the lead 1. If the height of the lead 1 cannot be increased, the resistance value of the lead 1 can be reduced by maintaining the height of the conventional lead 1 and increasing the width of the lead 1. Specifically, as shown in FIG. 6, in the fourth embodiment of the present invention, the width of each lead 1 is gradually increased from the middle to the both ends of the sector wire, that is, the width of the lead 1 in the middle of the sector wire is constant, and the rest are The farther the lead 1 is from the most intermediate lead 1, the larger the width of the lead 1, so that the resistance of each lead 1 is equal to the resistance of the most intermediate lead 1.
  • the ratio of the width of each lead 1 to the width of the lead 1 in the middle of the sector lead is exactly equal to the ratio of the length of the lead 1 and the lead of the middlemost lead 1.
  • the purpose of the above various solutions is to improve the uniformity of the display screen of the display panel by changing the resistance of the lead 1 or compensating the resistance of the lead 1.
  • each lead 1 of the sector wire since the material and width of each lead 1 of the sector wire are the same, only the length is different. The longer the length of the lead 1, the larger the resistance value, and the greater the degree of attenuation of the drive signal when transmitting the drive signal.
  • the attenuation of the driving signal can also be compensated, that is, the output signals of the output ends of the driving circuit are gradually increased from the middle to the both ends.
  • the degree of amplification of the output signal should substantially compensate for the attenuation of the drive signal by the lead 1 of different lengths, so that the drive signal actually received by the corresponding input end of the display panel is substantially equal to the drive signal that should be received theoretically.
  • a linear operational amplification module 5 is integrated on an IC integrated with a driving circuit, and the linear operational amplification module 5 is disposed on a side of the driving circuit close to the display panel.
  • the input end of the linear operation amplifying module 5 is connected to the output end of the driving circuit, and is connected to the driving signal outputted by the driving circuit, and correspondingly amplified and compensated for the driving signal, and then sent to the fan-shaped wires through the output end of the linear operation amplifying module 5
  • the driving signal after amplification and compensation is sent to the display panel by the fan-shaped wire for display by the display panel.
  • the linear operational amplification module 5 increases the degree of amplification of the output signals of the respective output terminals from the middle to the both ends of the respective output terminals arranged side by side by the drive circuit.
  • the degree of amplification of the drive signal outputted by the linear operational amplification module 5 to each output end of the drive circuit is linearly increasing with respect to the length of the lead 1 corresponding to the drive signal. Therefore, the linear operational amplifier module can be used to equalize the difference in the resistance of each lead 1 due to the difference in length of each lead and the degree of attenuation of the waveform of the drive signal, thereby improving the uniformity of the display screen of the display panel.
  • an embodiment of the present invention provides a display device including a display panel and a driving circuit disposed at a periphery of the display panel.
  • the resistance values between the respective output ends of the driving circuit to the corresponding input ends of the display panel are equal, or the intensity of the driving signal is increased according to the attenuation degree of the driving signals after passing through the sector wires, thereby improving the display of the display panel. Uniformity.

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  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
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Abstract

一种显示装置，属于显示技术领域，以解决扇形导线的各引线阻值不相等，影响显示面板的显示均一性的技术问题。该显示装置包括显示面板和设置于显示面板周边的驱动电路，该驱动电路包括多个并排设置的输出端，该显示面板上对应该驱动电路的输出端设置有多个并排设置的输入端。其中，该驱动电路各输出端与该显示面板的对应输入端之间的阻值相等；或，该驱动电路的各输出端的输出信号由中间向两端逐渐增强。本发明可用于液晶电视、液晶显示器、手机、平板电脑等显示装置。

Description

一种显示装置
本申请要求享有2015年5月19日提交的名称为“一种显示装置”的中国专利申请CN201510255868.0的优先权，其全部内容通过引用并入本文中。
技术领域
本发明涉及显示技术领域，具体地说，涉及一种显示装置。
背景技术
随着显示技术的发展，液晶显示器已经成为最为常见的显示装置。
在液晶显示器中，由基板上纵横交错的栅线和数据线控制各个像素，以实现图像的显示。栅极驱动信号和源极驱动信号是从液晶显示器中的驱动电路芯片发出的，通常利用覆晶薄膜(Chip On Film，简称COF)将栅极驱动信号和源极驱动信号分别传输至基板上的栅线和数据线。
具体的，如图1所示，一个COF通过一组扇形导线(fanout)连接至显示面板(Ative Area，简称AA)的栅线或数据线。一组扇形导线中包括多条引线1，因为扇形导线的整体呈扇形，位于扇形导线两端的引线1的长度会大于位于扇形导线中间的引线1的长度，所以两端引线1的阻值比中间引线1的阻值大，会使两端引线1所传输的栅极驱动信号或源极驱动信号的波形严重失真，影响栅极驱动信号或源极驱动信号的均匀性，进而影响显示面板的显示均一性。
发明内容
本发明的目的在于提供一种显示装置，以解决扇形导线的各引线阻值不相等，影响显示面板的显示均一性的技术问题。
本发明实施例提供了一种显示装置，该显示装置包括显示面板和设置于显示面板周边的驱动电路，所述驱动电路包括多个并排设置的输出端，所述显示面板上对应所述驱动电路的输出端设置有多个并排设置的输入端，所述驱动电路各输出端与所述显示面板的对应输入端之间的阻值相等；或，所述驱动电路的各输出端的输出信号由中间向两端逐渐增强。
其中，所述驱动电路的各输出端与所述显示面板的各输入端之间通过扇形导线连接， 所述扇形导线包括多条引线，所述多条引线的长度从所述扇形导线的中间到两端递增。
其中，所述多条引线的阻值相等。
其中，所述多条引线上形成有过孔，所述多条引线上的过孔数量从所述扇形导线的中间到两端递减，以使得所述多条引线的阻值相等。
其中，各过孔的大小相同。
其中，所述多条引线上设置有电阻，所述多条引线上的电阻阻值由所述扇形导线的中间到两端递减，以使得所述多条引线的阻值相等。
其中，所述多条引线的宽度由所述扇形导线的中间到两端递增，以使得所述多条引线的阻值相等。
其中，所述驱动电路的各输出端串联有电阻，由并排设置的各输出端的中间到两端，各输出端所串联的电阻的阻值递减。
其中，所述显示装置还包括设置在所述驱动电路靠近所述显示面板的一侧的线性运算放大模块，所述驱动电路的各输出端的输出信号输入所述线性运算放大模块，且由并排设置的各输出端的中间到两端，所述线性运算放大模块对各输出端的输出信号的放大程度递增。
其中，由并排设置的各输出端的中间到两端，所述线性运算放大模块对各输出端的输出信号的放大程度呈线性递增。
本发明带来了以下有益效果：本发明实施例提供了一种显示装置，该显示装置包括显示面板、设置于显示面板周边的驱动电路。该显示装置中，驱动电路的各输出端到显示面板对应输入端之间的阻值相等，或根据各驱动信号通过扇形导线后的衰减程度，相应提高驱动信号的强度，从而提高显示面板的显示均一性。
本发明的其它特征和优点将在随后的说明书中阐述，并且，部分地从说明书中变得显而易见，或者通过实施本发明而了解。本发明的目的和其他优点可通过在说明书、权利要求书以及附图中所特别指出的结构来实现和获得。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要的附图做简单的介绍：
图1是现有技术中的显示装置的结构示意图；
图2是本发明第一实施例中的扇形导线的结构示意图；
图3是本发明第二实施例中的显示装置的结构示意图；
图4是本发明第三实施例中的显示装置的结构示意图；
图5是本发明第二和第三实施例中的引线对应的电阻与引线长度的关系示意图；
图6是本发明第四实施例中的显示装置的结构示意图；
图7是本发明第五实施例中的显示装置的结构示意图；
图8是本发明第五实施例中的运算放大程度与引线长度的关系示意图。
具体实施方式
以下将结合附图及实施例来详细说明本发明的实施方式，借此对本发明如何应用技术手段来解决技术问题，并达成技术效果的实现过程能充分理解并据以实施。需要说明的是，只要不构成冲突，本发明中的各个实施例以及各实施例中的各个特征可以相互结合，所形成的技术方案均在本发明的保护范围之内。
本发明实施例提供了一种显示装置，该显示装置包括显示面板、设置于显示面板周边的驱动电路，驱动电路包括多个并排设置的输出端，显示面板设置有对应驱动电路的多个并排设置的输入端。其中，驱动电路的各输出端与显示面板的对应输入端之间的阻值相等。
需要说明的是，由于本发明实施例不涉及栅极驱动电路输出的栅极驱动信号或源极驱动电路输出的源极驱动信号，因此，将栅极驱动电路和源极驱动电路不进行区分、统称为驱动电路。类似的，栅极驱动电路输出的栅极驱动信号、源极驱动电路输出的源极驱动信号同样统称驱动信号。
如图1所示，驱动电路具有多个输出端，对应的显示面板具有个数相同的输入端。驱动电路通过电路集成技术，设置在一块尺寸远小于显示面板的印刷电路板(Printed Circuit Board，简称PCB)上。为了实现驱动电路的各输出端与显示面板上的对应输入端的连接，通常是通过一组扇形导线连接驱动电路的各输出端与显示面板上的各对应输入端。一组扇形导线包括多条引线1，因为扇形导线的整体呈扇形，位于扇形导线两端的引线1的长度会大于位于扇形导线中间的引线1的长度。在各引线1的线宽、材质均相同的情况下，根据电阻值计算公式
Figure PCTCN2015085376-appb-000001
可知(式中ρ代表引线1的材质，l表示引线1的长度，S表示引线1的横截面积)，位于扇形导线两端的引线1的阻值大于位于扇形导线中间的引线1的阻值。因此，位于扇形导线两端的引线1传输的驱动信号的衰减、延迟现象较为严重，导致两端引线1上传输的驱动信号的波形严重失真，影响驱动信号的均一性，进而影响显示面板的显示均一性。
因此，为了提高驱动信号的均一性、提高显示面板的显示均一性，在本发明实施例中，可通过调节各引线1的阻值或预先对各引线1的阻值进行补偿来实现。具体的，至少有以 下几种方式来处理：
由前文记载可知，阻值是由引线1的横截面积和长度等因素决定的，且现有技术的扇形导线中，各引线1的横截面积均相同。但是如图1所示，各引线1的长度却各不相同，在各引线1的材质相同的情况下，各条引线1的阻值各不相同。如图2所示，在本发明第一实施例中，可在引线1上设置过孔2，以调节各引线1的阻值，使得各引线1的阻值相等。
具体的，若每个过孔2的大小都相同，对于扇形导线中的各引线1而言，过孔2的数量从中间至两端呈依次递减的趋势。利用孔壁的弧度来延长过孔2处的引线1的长度，进而增大引线1的阻值。过孔2可设置在显示面板上的引线部分，此外，由于驱动电路和显示面板之间是通过COF连接的，因此过孔2也可设置在COF上的引线部分。最终都可使得各条引线1的阻值相同，从而提升画面显示的均一性。
显然，位于扇形导线两端的两引线1上可不设置过孔2，仅在其余引线1上设置个数适合的过孔2，使得其余引线1的阻值都与位于两端的两引线1的阻值相等。
如图3所示，本发明的第二实施例中，每一引线1的宽度都相同，为了使得每一引线1的阻值都相等，可在每一引线1上串联上阻值适当的电阻3。具体的，如图5所示，各用于补偿引线1阻值的电阻3的阻值与引线1的长度呈线性递减，即由扇形导线的中间到两端，每一引线1上串联的电阻3的阻值依次递减。即越是位于扇形导线中间的引线1，其上串联的电阻3的阻值越大；而越是靠近扇形导线的两端的引线1，其上串联的电阻3的阻值越小。特别是位于扇形导线的两端的两引线1，其上可不串联有电阻3。通过串联适当的电阻3，使得其余引线1的阻值都与两端的两引线1的阻值相等，从而提高显示面板的显示均一性。
另外，电阻3也可不串联在各引线1上，而是预先整合在设置有驱动电路的集成电路(Integrated Circuit，简称IC)上。具体的，如图4所示，在本发明的第三实施例中，驱动电路的各输出端处集成设置有一组并联的电阻串4。如图5所示，该电阻串4也呈线性变化，表现为从中间至两端呈线性递减，即长度越长的引线1，电阻串4中对应的电阻的阻值越小。即对于驱动电路的各输出端而言，自中间向两端，各输出端串联的电阻的阻值依次减小。利用集成在IC内的线性电阻串4来均衡因引线1长度不同而导致的各引线1的阻值的不同，从而提高显示面板显示画面的均一性。
由电阻值计算公式
Figure PCTCN2015085376-appb-000002
可知，电阻值与引线1的横截面积成反比，若无法增加引线1的高度，可通过保持现有的引线1的高度、增大引线1的宽度来减小引线1的电阻值。具体的，如图6所示，在本发明第四实施例中，由扇形导线的中间到两端，各引线1的宽 度逐渐增加，即扇形导线最中间的引线1的宽度不变，其余各引线1距离最中间的引线1越远，引线1的宽度越大，使得各引线1的阻值与最中间的引线1的电阻值相等。其中，每一引线1的宽度与扇形导线最中间的引线1的宽度的比值恰好与该引线1的长度以及最中间的引线1的比值相等。通过增加每一引线1的宽度，来抵消各引线1的长度增加的电阻值，使得各引线1的阻值相等。
显然，上述各种解决方法的目的均是通过改变引线1的电阻或对引线1的电阻进行补偿，来提高显示面板的显示画面的均一性。
如图1所示，由于扇形导线的各引线1的材质、宽度都相同，仅有长度不同。长度越长的引线1，电阻值就越大，在传输驱动信号时，对驱动信号的衰减的程度越强烈、明显。
为了提高显示面板的显示画面的均一性，也可以对驱动信号的衰减进行补偿，即令驱动电路各输出端的输出信号由中间向两端逐渐增强。输出信号放大程度应基本上能够弥补长度不一的引线1对驱动信号的衰减程度，使得显示面板的对应输入端实际接收到的驱动信号与理论应接收到的驱动信号基本相等。
具体的，在本发明第五实施例中，如图7所示，在集成有驱动电路的IC上集成线性运算放大模块5，该线性运算放大模块5设置于驱动电路上靠近显示面板的一侧。线性运算放大模块5的输入端连接驱动电路的输出端，接入驱动电路输出的驱动信号，对驱动信号进行对应的放大、补偿之后，通过线性运算放大模块5的输出端输送给扇形导线的各输入端，由扇形导线将放大、补偿之后的驱动信号输送给显示面板，供显示面板进行显示。
由于扇形导线中，由中间至两端，引线1的长度逐渐增长。因此，对于线性运算放大模块5而言，由驱动电路并排设置的各输出端的中间到两端，线性运算放大模块5对各输出端的输出信号的放大程度递增。具体的，如图8所示，可知线性运算放大模块5对驱动电路各输出端输出的驱动信号的放大程度，与对应传输该驱动信号的引线1的长度呈线性递增的关系。从而可利用该线性运算放大模块来均衡因各引线的长度不同而造成的各引线1的阻值不同、对驱动信号的波形的衰减程度不同的情况，提升显示面板的显示画面的均一性。
综上，本发明实施例提供了一种显示装置，该显示装置包括显示面板、设置于显示面板周边的驱动电路。该显示装置中，驱动电路的各输出端到显示面板对应输入端之间的阻值相等，或根据各驱动信号通过扇形导线后的衰减程度，相应提高驱动信号的强度，从而提高显示面板的显示均一性。
虽然本发明所公开的实施方式如上，但所述的内容只是为了便于理解本发明而采用的实施方式，并非用以限定本发明。任何本发明所属技术领域内的技术人员，在不脱离本发 明所公开的精神和范围的前提下，可以在实施的形式上及细节上作任何的修改与变化，但本发明的专利保护范围，仍须以所附的权利要求书所界定的范围为准。

Claims (10)

  1. 一种显示装置，包括显示面板和设置于显示面板周边的驱动电路，所述驱动电路包括多个并排设置的输出端，所述显示面板上对应所述驱动电路的输出端设置有多个并排设置的输入端，
    所述驱动电路各输出端与所述显示面板的对应输入端之间的阻值相等；
    或，所述驱动电路的各输出端的输出信号由中间向两端逐渐增强。
  2. 根据权利要求1所述的显示装置，其中，所述驱动电路的各输出端与所述显示面板的各输入端之间通过扇形导线连接，所述扇形导线包括多条引线，所述多条引线的长度从所述扇形导线的中间到两端递增。
  3. 根据权利要求2所述的显示装置，其中，所述多条引线的阻值相等。
  4. 根据权利要求3所述的显示装置，其中，所述多条引线上形成有过孔，所述多条引线上的过孔数量从所述扇形导线的中间到两端递减，以使得所述多条引线的阻值相等。
  5. 根据权利要求4所述的显示装置，其中，
    各过孔的大小相同。
  6. 根据权利要求3所述的显示装置，其中，
    所述多条引线上设置有电阻，所述多条引线上的电阻阻值由所述扇形导线的中间到两端递减，以使得所述多条引线的阻值相等。
  7. 根据权利要求3所述的显示装置，其中，
    所述多条引线的宽度由所述扇形导线的中间到两端递增，以使得所述多条引线的阻值相等。
  8. 根据权利要求2所述的显示装置，其中，
    所述驱动电路的各输出端串联有电阻，由并排设置的各输出端的中间到两端，各输出端所串联的电阻的阻值递减。
  9. 根据权利要求2所述的显示装置，其中，还包括设置在所述驱动电路靠近所述显示面板的一侧的线性运算放大模块，所述驱动电路的各输出端的输出信号输入所述线性运算放大模块，且由并排设置的各输出端的中间到两端，所述线性运算放大模块对各输出端的输出信号的放大程度递增。
  10. 根据权利要求9所述的显示装置，其中，由并排设置的各输出端的中间到两端，所述线性运算放大模块对各输出端的输出信号的放大程度呈线性递增。
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