CN101206831B - 显示驱动电路 - Google Patents

显示驱动电路 Download PDF

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Publication number
CN101206831B
CN101206831B CN2007101530128A CN200710153012A CN101206831B CN 101206831 B CN101206831 B CN 101206831B CN 2007101530128 A CN2007101530128 A CN 2007101530128A CN 200710153012 A CN200710153012 A CN 200710153012A CN 101206831 B CN101206831 B CN 101206831B
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China
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mentioned
power supply
driver circuit
display driver
power
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CN2007101530128A
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CN101206831A (zh
Inventor
平间厚志
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Lapis Semiconductor Co Ltd
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Oki Electric Industry Co Ltd
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Publication of CN101206831A publication Critical patent/CN101206831A/zh
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    • G—PHYSICS
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    • 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
    • G09G3/22—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 using controlled light sources
    • G09G3/30—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 using controlled light sources using electroluminescent panels
    • G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
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    • G09G3/22—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 using controlled light sources
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    • 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
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Abstract

本发明提供小型化的COG安装方式的显示驱动电路。在接地线(62)的大致中心部附近配置接地端子(65)且与该接地线(62)连接。由此，从左侧的开关元件(64-1，...)流入的驱动电流，从接地线(62)的左侧向中心部流动并向接地端子(65)流出，从右侧的开关元件(64-(n/2+1)，...)流入的驱动电流，从接地线(62)的右侧向中心部流动且向接地端子(65)流出。即，向长度为L的接地线(62)流入的驱动电流的路径被限定为从左右向中心部，且该电流路径的最大长度为L/2。其结果，即使比以往缩小接地线(62)的宽度(W)，也可满足电迁移。从而，可缩短基材(61)的短边长度，可使扫描线驱动电路(60)小型化。

Description

显示驱动电路
技术领域
本发明涉及用于驱动使用了有机电致发光(以下称“有机EL”)元件或发光二极管(以下称“LED”)等的显示装置的显示驱动电路，特别是涉及与形成在玻璃基板上的显示部的引线键合连接的将芯片固定于玻璃上(以下称“COG”)的安装方式的芯片状的显示驱动电路。
背景技术
图2中(a)、(b)是表示以往的COG安装方式的有机EL驱动电路的显示屏的模式化的概略构成图，同图(a)是整体的俯视图、以及同图(b)是同图(a)的I1-I2线截面图。
该显示屏1具有大致方形的玻璃基板2，在该玻璃基板2上的大致中央形成有作为显示画面的显示区域10。在显示区域10中，形成有多根数据线SEG和与它们正交的多根扫描线COM，在这些数据线SEG与扫描线COM的各交叉处，分别连接有有机EL元件(以下简称“EL元件”)11并配置成矩阵状。数据线SEG和扫描线COM以引线的形状从显示区域10引出至玻璃基板2的周缘。这些数据线SEG和扫描线COM例如利用使用了ITO(Indium Tin Oxide)的透明导电膜而形成的。使用了ITO的透明导电膜与布线电阻非常小的铜布线膜相比，具有较大的布线电阻。
通过COG安装方式，将多个芯片状的数据线驱动电路20(＝20-1～20-n)键合连接在从显示区域10引出的多根数据线SEG上。各数据线驱动电路20由根据显示用图像数据来进行接通/断开动作的晶体管的开关元件等构成，且具有向数据线SEG提供规定的电流等的功能。同样地，也通过COG安装方式，将多个芯片状的扫描线驱动电路30(＝30-1～30-n)键合连接在从显示区域10引出的多根扫描线COM上。各扫描线驱动电路30由根据显示用的图像数据进行接通/断开动作的晶体管的开关元件等构成，且具有按顺序将各扫描线COM降低到接地电位(例如，OV)等的功能。
另外，在玻璃基板2上，将未图示的其他相关部件(控制电路)搭载在显示区域10的周边的空区域上。
图3是表示图2中EL元件附近的X部分以及扫描线驱动电路30-1的一部分的Y部分的概略的电路图。并且，图4中(a)、(b)是表示图2中的扫描线驱动电路30的概略的构成图，同图(a)是俯视图，以及同图(b)是同图(a)中的I11-I12线截面图。
在图3中的X部分所示的EL元件附近，在数据线SEG和与其交叉的扫描线COM之间按正向连接有EL元件11。
图3中的Y部分和图4所示的扫描线驱动电路30具有大致矩形的基材31。在基材31上的长边方向，延长设置有具有规定宽度W和长度L的接地线32。在基材31上的一方的长边侧，配设有多个输出端子33(＝33-1～33-n)，在这些输出端子33与接地线32之间，连接有由晶体管构成的多个驱动用开关元件34(＝34-1～34-n)。这些开关元件34通过未图示的控制电路等的控制进行接通/断开动作。
并且，在基材31上的另一方的长边侧，将接地端子35-1、35-2配设在两短边部，这些接地端子35-1、35-2与接地线32的两端连接。多个输出端子33和接地端子35-1、35-2通过形成在它们之上的突起36，连接在各扫描线COM上。
例如，在使某EL元件11发光时，将与该EL元件11连接的扫描线COM，通过扫描线驱动电路30中的输出端子33和开关元件34而与接地线32连接，使该扫描线COM为接地电位(0V)。并且，从数据线驱动电路20，向与该EL元件11连接的数据线SEG，提供驱动电流。于是，驱动电流以数据线SEG→EL元件11→扫描线COM→输出端子33→开关元件34→接地线32→接地端子35-1、35-2的路径流动，EL元件11发光。该发光量(发光程度)依赖于驱动电流的电流值。
与如此构成的显示屏1有关的技术，例如也已公开在以下文献等中。
【专利文献1】：日本特开2002-151276号公报
【专利文献2】：日本特开2003-131617号公报
【专利文献3】：日本特开2004-206056号公报
【专利文献4】：日本特开2005-144685号公报
在专利文献1中记载了EL元件的颜色平衡较好，且发光亮度的平衡较好、可显示颜色鲜艳的图像的EL显示装置的技术。在专利文献2中记载了图2和图3所示的以往的EL驱动电路的技术。在专利文献3中记载了无需扩大额缘部，即可抑制亮度不均、且保持显示品质的EL驱动电路的技术。另外，在专利文献4中记载了在多个EL元件的发光光量上没有差值的结构的行扫描头以及采用了该行扫描头的复印机的技术。
但是，在以往的显示驱动电路(例如，图4所示的扫描线驱动电路30)中，存在如下问题。
在以往的扫描线驱动电路30中，接地端子35-1、35-2连接在接地线32的两端，这些接地端子35-1、35-2通过COG安装，借助于突起36与扫描线SEG连接。
在COG安装中，接触电阻较大，此外，劣化也较严重，因此，如果还存在该劣化，则接触电阻值有数Ω～数十Ω的偏差。此时，扫描线驱动电路30内的接地线32的电阻值由电迁移(电迁移指当电流向极细布线流动时，由于高密度的电子流动以及所伴随的原子的移动而产生的断路或短路事故的现象)而决定，但是，在考虑到图4那样的有源矩阵有机EL等显示屏1时，例如，可假定需要直流电流最大1.0A左右的允许值。
当如此假定时，一般情况下由于允许电流为1mA/μm左右，所以在接地线32的长度L为10000μm左右时，需要1000μm的接地线宽度W。此时，由于薄层电阻为0.05chm/□左右，所以长度L的接地线32的电阻值R，在图4(a)的俯视图中从右到左为0.5Ω。其结果，如图4(a)中箭头所示那样，可充分地认为作为电流路径是，从左端的输出端子33-1向接地线32流入的输出电流从右端的接地端子35-2向地流动的情况。
当欲使用接地线32的两端的接地端子35-1、35-2将其吸收时，为了降低突起36处的接触电阻，需要接地端子数为100个左右，则基材31的长边的长度过大，在安装上，是不现实的。此外，接地线宽度W也整整需要1000μm，从而基材31的短边的长度变大，因此存在扫描线驱动电路30的平面尺寸(大小)大型化这样的进行COG安装时的特有问题。
为了解决这样的问题，例如，可考虑利用专利文献1、3、4的技术。
在专利文献1的图1中，记载了将连接作为电源端子的两个引出端子(相当于接地端子35-1、35-2)与电源提供线(相当于数据线SEG)之间的引绕布线(相当于接地线32)的宽度设定为最佳值的技术。如果利用该技术将接地线32的宽度W设定为最佳值的话，如上所述，需要1000μm左右，所以扫描线驱动电路30的短边方向的尺寸变大，从而不能解决上述问题。
在专利文献3中，记载了：虽不是显示驱动电路侧，但通过将用于向EL显示屏提供电源的电源布线的宽度设定为图18记载的以往的宽度的一半，来使额缘的区域(相当于显示区域10的周边)变窄的内容。可将电源布线宽度设定为以往的宽度的一半是因为，如专利文献3的图4所示那样，电源布线以从两处的安装端子部延伸的方式而形成的缘故。在利用了该专利文献3的技术时，如本申请说明书的图4所记载的那样，相当于在接地线32的两端，连接接地端子35-1、35-2且设接地线32的宽度W为1/2的情况，从而根本无法解决上述问题。
在专利文献4的图1中，记载了如下技术，即在与显示屏的显示驱动电路技术不同的复印机的行扫描头中，通过在各线的两端及中间点设置向电源线和接地线供电的供电点，来消除针对多个EL元件的发光光量的差值，从而使其均匀化。但是，在该技术中，完全没有考虑布线的宽度，而且其为与COG安装完全不同的技术，因此，如何利用该专利文献4的技术，才能解决上述问题，是极为困难的。
如此，即使利用了专利文献1、3、4的技术，也难于解决进行COG安装时的上述的特有的问题。
发明内容
本发明的目的在于解决如下问题，即在采用如COG那样的接触电阻较大的安装方式时，由于难于控制显示驱动电路内的电流路径，因此存在难以实现显示驱动电路小型化的问题。
本发明为与形成在玻璃基板上的显示部的多根引线键合连接的COG安装方式的芯片状的显示驱动电路，其具有：大致矩形的基材；延长设置在上述基材上的长边方向且具有规定宽度的电源布线；在上述基材上，沿上述电源布线并以规定的间隔配设，且通过突起分别与上述多根引线键合连接的多个输出端子；在上述基材上，沿上述电源布线并以规定的间隔配设，且在上述多个输出端子与上述电源布线之间被分别连接的多个驱动用开关元件；以及在上述基材上与上述电源布线的中心部连接，且通过突起与上述引线键合连接的电源端子。
根据本发明，由于在电源线的中心部连接了电源端子，所以可将电源线的宽度设定为小于以往的宽度。由此，可缩短基材的短边长度，可小型化扫描线驱动电路。
附图说明
图1是表示本发明的实施例1的显示屏中的显示驱动电路(例如，扫描线驱动电路)的概略构成图。
图2是表示以往COG安装方式的有机EL驱动电路中的显示屏的模式化的概略构成图。
图3是表示图2中的EL元件附近的X部分、以及扫描线驱动电路30-1的一部分的Y部分的概略的电路图。
图4是表示图2中的扫描线驱动电路30的概略构成图。
图5是表示本发明的实施例2的显示屏中的显示驱动电路(例如，扫描线驱动电路)的概略构成图。
图6是表示图5中(a)中的扫描线驱动电路的线路图的放大图。
图中：40-显示屏；41-玻璃基板；50-显示区域；60，60A-扫描线驱动电路；61-基材；62-接地线；63，63-1～63-n-输出端子；64，64-1～64-n-开关元件；65，65-1，65-2，65-3-接地端子；66-突起。
具体实施方式
COG安装方式的芯片状的显示驱动电路是与形成在玻璃基板上的显示部的多根引线键合连接的电路，具有：大致矩形的基材；延长设置在上述基材上的长边方向且具有规定宽度的电源布线(例如，接地线)；在上述基材上，沿上述电源布线并以规定的间隔配设，且通过突起分别与上述多根引线键合连接的多个输出端子；在上述基材上，沿上述电源布线并以规定的间隔配设，且在上述多个输出端子与上述电源布线之间被分别连接的多个驱动用开关元件；以及在上述基材上与上述电源布线的中心部连接，且通过突起与上述引线键合连接的电源端子(例如，接地端子)。
(实施例1的构成)
图1中(a)、(b)是表示本发明的实施例1的显示屏中的显示驱动电路(例如，扫描线驱动电路)的概略构成图，同图(a)是俯视图，以及同图(b)是同图(a)中的I21-I22线截面图。
与以往的图2相同，显示屏40具有大致方形的玻璃基板41，在该玻璃基板41上的大致中央位置形成有显示区域50。在显示区域50中，形成有多根数据线SEG、和与它们正交的多根扫描线COM，在这些数据线SEG与扫描线COM的各交叉处，分别连接有EL元件51并配置成矩阵状。这些数据线SEG和扫描线COM例如是利用使用了ITO(Indium Tin Oxide)的透明导电膜而形成的。
与以往的图2相同，在从显示区域50以引线的形式引出且按规定的间隔配置的多根数据线SEG上，通过COG安装方式键合连接有未图示的多个芯片状的数据驱动电路。同样地，在从显示区域50以引线的形式引出且按规定的间隔配置的多根扫描线COM上，也通过COG安装方式键合连接有多个芯片状的扫描线驱动电路60。
扫描线驱动电路60具有大致矩形的基材61。在基材61上的长边方向，从基材61的一方的短边侧到另一方的短边侧延长设置具有规定宽度W、长度L(例如，约10000μm)、以及长度L的电阻值R(例如，约0.5Ω)的电源布线(例如，接地线)62。在基材61上的一方的长边侧，以规定间隔配设有多个输出端子63(＝63-1～63-n)，在这些输出端子63与接地线62之间，连接有由晶体管构成的多个驱动用开关元件64(＝64-1～64-n)。这些开关元件64通过未图示的控制电路等的控制进行接通/断开动作。
并且，在基材61上的另一方的长边侧的大致中心部，配设电源端子(例如，接地端子)65，该接地端子65连接在接地线62的大致中心部。以接地端子65为中心而到接地线62的左端和右端为止的电阻值分别为R/2(例如，约0.25Ω)。多个输出端子63和接地端子65通过形成在它们之上的金属(Au)等的突起66连接在各扫描线COM上。
(实施例1的动作)
例如，在使某个EL元件51发光时，将与该EL元件51连接的扫描线COM，通过扫描线驱动电路60中的输出端子63和开关元件64而与接地线62连接，将该扫描线COM设为接地电位(0V)。并且，从未图示的数据线驱动电路，向与该EL元件51连接的数据线SEG提供驱动电流。于是，驱动电流以数据线SEG→EL元件51→扫描线COM→输出端子63→开关元件64→接地线62→中心部的接地端子65的路径流动，EL元件51发光。
在此，通过未图示的控制电路等的控制，在开关元件64-1、...、64-n/2、64-(n/2+1)、......、64-n从图1中(a)的左侧向右侧依次呈接通状态地进行扫描时，从左侧的输出端子63-1、...、63-n/2流入的驱动电流，如图1中(a)中的箭头所示，通过左侧的开关元件64-1、...而从接地线62的左侧向中心部流动，经过该中心部的接地端子65被释放到地。另外，从右侧的输出端子63-(n/2+1)、......、63-n流入的驱动电流，如图1中(a)中的箭头所示，通过右侧的开关元件64-(n/2+1)、...而从接地线62的右侧向中心部流动，经过该中心部的接地端子65被释放到地。
在COG安装中，由于接触电阻较大，所以与以往的图4相同，例如，当假定需要直流电流最大1.0A左右的允许值时，由于允许电流为1mA/μm左右，所以在接地线62的长度L约为10000μm左右时，该长度L的接地线62的电阻值R约为0.5Ω。
但是，在本实施例1中，由于接地端子65被配置在接地线62的大致中心部附近并与该接地线62相连接，所以从左侧的开关元件64-1、...流入的驱动电流从接地线62的左侧向中心部流动并流向接地端子65，从右侧的开关元件64-(n/2+1)、...流入的驱动电流从接地线62的右侧向中心部流动并流向接地端子65。即，向长度为L的接地线62流入的驱动电流的路径被限制为从左右向中心部，该电流路径的最大长度为L/2。由于薄层电阻为0.05Chm/□左右，所以长度为L/2的接地线62的电阻值R/2约为0.25Ω。其结果，即使将接地线62的宽度W缩小为以往的一半即500μm左右，也可满足电迁移。因此，可缩短基材61的短边长度，可使扫描线驱动电路60小型化。
(实施例1的效果)
根据本实施例1，具有以下(1)、(2)那样的效果。
(1)由于在接地线62的中心部附近配置接地端子65且使其与该接地线62连接，所以可将接地线62的长度L设定为与以往相同，而将宽度W设定为以往的一半。由此，可缩短基材61的短边长度，且可使扫描线驱动电路60小型化。
(2)也可在接地线62的中心部附近，配设有多个与该接地线62连接的接地端子65，并通过突起将它们与扫描线COM连接。由此，多个接地端子处的接触并联合成电阻值变小，从而可向中心部的接地端子处高效率地释放从接地线62的左右流入的驱动电流。
(实施例2)
例如，与以往的图2的多个扫描线驱动电路30-1～30-n相同，当在显示区域50的周边，配置了多个实施例1的图1的扫描线驱动电路60时，在与各扫描线驱动电路60相连接的扫描线COM的断开处(例如，与左侧的扫描线驱动电路连接的右端的扫描线COM、和连接于与其相邻的右侧的扫描线驱动电路的左端的扫描线COM之间)，由于电源阻抗之差，而有可能产生显示不均。为了控制该显示不均等，在本实施例2中，其构成如下。
(实施例2的构成)
图5中(a)、(b)是在表示本发明的实施例2的显示屏中的显示驱动电路(例如，扫描线驱动电路)的概略构成图，同图(a)是俯视图、以及同图(b)是同图(a)中I31-I32线截面图。并且，图6是表示图5中(a)中的扫描线驱动电路的线路图的放大图。在图5中(a)、(b)以及图6中，对与表示实施例1的图1中(a)、(b)中的要素共同的要素，附加共同的符号。
在本实施例2的扫描线驱动电路60A中，代替实施例1的接地端子65，在接地线62的中心部附近配置有多个(例如，2m个(其中m为1以上的整数))接地端子65-1且将它们与该接地线62的中心部连接，并且，在接地线62的左端部附近配置有多个(例如，m个)接地端子65-2且将它们与该接地线62的左端部连接，并且，在接地线62的右端部附近配置有多个(例如，m个)接地端子65-3且将它们与该接地线62的右端部连接。这些2m个接地端子65-1、m个接地端子65-2、以及m个接地端子65-3通过分别形成在它们之上的Au等突起66，连接在各扫描线COM上。
配置在接地线62的中心部附近的2m个接地端子65-1的平面上的形成面积大于配置在接地线62的两端部附近的m个接地端子65-2的形成面积或m个接地端子65-3的形成面积。由此，中心部的2m个接地端子65-1的接触并联合成电阻值小于两端部的m个接地端子65-2或m个接地端子65-3的接触并联合成电阻值。
此外，设置在接地线62的中心部附近的2m个接地端子65-1被配置为其密度高于设置在接地线62的两端部附近的各m个接地端子65-2或65-3。例如，2m个接地端子65-1中的相邻的接地端子之间的距离P1被配置为窄于各m个接地端子65-2或65-3中的相邻的接地端子之间的距离P2。其他构成与实施例1相同。
(实施例2的动作)
例如，在开关元件64-1、...、64-n/2、64-(n/2+1)、...、64-n从图5中(a)的左侧向右侧依次呈接通状态而进行扫描时，从左侧的输出端子63-1、......、63-n/2流入的驱动电流如图5中(a)中的箭头所示，通过左侧的开关元件64-1、...，一部分驱动电流从接地线62的左侧，经过左侧的多个接地端子65-2，被释放到地，其余的大部分驱动电流则从接地线62的左侧，经过中心部的多个接地端子65-1，被释放到地。另外，从右侧的输出端子63-(n/2+1)、...、63-n流入的驱动电流如图5中(a)中的箭头所示，通过右侧的开关元件64-(n/2+1)、...，其中一部分电流从接地线62的右侧，经过右侧的多个接地端子65-3，被释放到地，其余的大部分驱动电流则从接地线62的右侧，经过中心部的多个接地端子65-1，被释放到地。
例如，当设1个接地端子的接触电阻值为最小(min)1Ω/最大(max)10Ω，左右两端部的接地端子数为20个，中心部的接地端子数为40个时，左右两端部的接触并联合成电阻值为最小(min)0.1Ω、最大(max)0.5Ω，中心部最小(min)为0.05Ω、最大(max)为0.25Ω。因此，大约7成的驱动电流流向中心部的多个接地端子65-1，大约3成的驱动电流流向左右两端部的多个接地端子65-2、65-3。
(实施例2的效果)
根据本实施例2，具有以下(3)～(5)的效果
(3)由于在接地线62的左右两端部也设置了多个接地端子65-2、65-3，所以在显示区域50的周边配置了多个扫描驱动电路60A时，在与各扫描线驱动电路60A连接的扫描线COM的断开处，电源阻抗之差较小。因此，可减轻产生在该断开处的显示不均。
(4)由于使中心部的2m个接地端子65-1的接触并联合成电阻值小于接地线62中的两端部的m个接地端子65-2或m个接地端子65-3的接触并联合成电阻值，所以可使大部分驱动电流流向中心部的2m个接地端子65-1。因此，具有与实施例1的效果(1)、(2)相同的效果。
(5)由于使接地线62的中心部的接地端子之间的距离P1窄于左右两端部的接地端子之间的距离P2，所以中心部的多个接地端子65-1的密度变高。因此，可缩短中心部的多个接地端子65-1的长边方向的整体长度，可抑制扫描线驱动电路60A的长边长度的增加。
(变形例)
本发明不局限于实施例1、2，可有各种利用方式或变形。作为利用方式和变形例，例如，有如下(a)～(c)那样的情况。
(a)显示屏40的显示区域50也可变更为图示以外的电路构成，所采用EL元件51以外的其他的LED等显示元件而构成。
(b)可用任意比率设定实施例2的接地线62的中心部的接地端子65-1的个数和左右两端部的接地端子65-2、65-3的个数。
(c)在实施例1、2中，对扫描线驱动电路60、60A进行了说明，但是，也可适用于图2的数据线驱动电路20等的其他显示驱动电路。例如，在图1和图5中，也可用电源线代替接地线62，用其他电路构成的开关元件代替驱动用开关元件64，用电源端子代替接地端子65等。

Claims (16)

1.一种显示驱动电路，为与形成在玻璃基板上的显示部的多根引线键合连接的、将芯片固定于玻璃上的安装方式的芯片状显示驱动电路，其特征在于，具有：
大致矩形的基材；
延长设置在上述基材上的长边方向且具有规定宽度的电源布线；
在上述基材上，沿上述电源布线并以规定的间隔配设，且通过突起分别与上述多根引线键合连接的多个输出端子；
在上述基材上，沿上述电源布线并以规定的间隔配设，且在上述多个输出端子与上述电源布线之间被分别连接的多个驱动用开关元件；
以及在上述基材上与上述电源布线的中心部连接，且通过突起与上述引线键合连接的电源端子。
2.根据权利要求1所述的显示驱动电路，其特征在于，上述电源布线从上述基材的一方的短边侧向另一方的短边侧延长设置，
上述多个输出端子形成在上述基材上的一方的长边侧，
上述多个驱动用开关元件沿上述电源布线形成在上述多个输出端子与上述电源布线之间，
上述电源端子形成在上述基材上的另一方的长边侧。
3.根据权利要求1所述的显示驱动电路，其特征在于，在上述电源布线的两端部还分别配设并连接有上述电源端子。
4.根据权利要求2所述的显示驱动电路，其特征在于，在上述电源布线的两端部还分别配设并连接有上述电源端子。
5.根据权利要求3所述的显示驱动电路，其特征在于，在上述电源布线的中心部和两端部分别设置多个上述电源端子。
6.根据权利要求4所述的显示驱动电路，其特征在于，在上述电源布线的中心部和两端部分别设置多个上述电源端子。
7.根据权利要求5所述的显示驱动电路，其特征在于，与上述电源布线的中心部连接的上述多个电源端子的形成面积大于与上述电源布线的两端部连接的上述多个电源端子的形成面积。
8.根据权利要求6所述的显示驱动电路，其特征在于，与上述电源布线的中心部连接的上述多个电源端子的形成面积大于与上述电源布线的两端部连接的上述多个电源端子的形成面积。
9.根据权利要求5所述的显示驱动电路，其特征在于，上述电源端子以上述中心部的个数多于上述两端部的个数的方式被配设。
10.根据权利要求6所述的显示驱动电路，其特征在于，上述电源端子以上述中心部的个数多于上述两端部的个数的方式被配设。
11.根据权利要求5所述的显示驱动电路，其特征在于，上述中心部的上述多个电源端子以其密度高于上述两端部的上述多个电源端子的方式被配设。
12.根据权利要求6所述的显示驱动电路，其特征在于，上述中心部的上述多个电源端子以其密度高于上述两端部的上述多个电源端子的方式被配设。
13.根据权利要求5所述的显示驱动电路，其特征在于，上述中心部的上述多个电源端子以与上述两端部的上述多个电源端子相比，其相邻电源端子之间的距离较窄的方式被配设。
14.根据权利要求6所述的显示驱动电路，其特征在于，上述中心部的上述多个电源端子以与上述两端部的上述多个电源端子相比，其相邻电源端子之间的距离较窄的方式被配设。
15.根据权利要求1至14的任意一项所述的显示驱动电路，其特征在于，上述电源布线为接地线或电源线。
16.根据权利要求15所述的显示驱动电路，其特征在于，上述电源端子为接地端子。
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Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE48714E1 (en) 2009-06-26 2021-08-31 Turbonomic, Inc. Managing application performance in virtualization systems
USRE48680E1 (en) 2009-06-26 2021-08-10 Turbonomic, Inc. Managing resources in container systems
USRE48663E1 (en) 2009-06-26 2021-07-27 Turbonomic, Inc. Moving resource consumers in computer systems
JP2011150270A (ja) * 2009-12-25 2011-08-04 Sony Corp 駆動回路および表示装置
KR101258260B1 (ko) * 2010-04-16 2013-04-25 엘지디스플레이 주식회사 유기전계발광표시장치
KR102026927B1 (ko) 2012-12-24 2019-10-01 엘지디스플레이 주식회사 구동부를 포함하는 표시장치
JP2015070086A (ja) * 2013-09-27 2015-04-13 シナプティクス・ディスプレイ・デバイス株式会社 集積回路モジュール及び表示モジュール

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002151276A (ja) * 2000-08-10 2002-05-24 Semiconductor Energy Lab Co Ltd 表示装置及び電子機器
JP2003131617A (ja) * 2001-10-26 2003-05-09 Oki Electric Ind Co Ltd 駆動回路
CN1421833A (zh) * 2001-11-22 2003-06-04 奇美电子股份有限公司 平面显示器及其驱动芯片
JP2004206056A (ja) * 2002-06-21 2004-07-22 Seiko Epson Corp ディスプレイ用基板、電気光学装置、及び電子機器
CN1601336A (zh) * 2003-09-24 2005-03-30 精工爱普生株式会社 电光装置及电子设备
JP2005144685A (ja) * 2003-11-11 2005-06-09 Seiko Epson Corp ラインヘッドおよびそれを用いた画像形成装置

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0682802A (ja) * 1992-08-31 1994-03-25 Hitachi Ltd 液晶表示装置
JP3483759B2 (ja) * 1998-03-19 2004-01-06 株式会社東芝 液晶表示装置
US6445039B1 (en) * 1998-11-12 2002-09-03 Broadcom Corporation System and method for ESD Protection
JP2002108284A (ja) * 2000-09-28 2002-04-10 Nec Corp 有機ｅｌ表示装置及びその駆動方法
JP3675797B2 (ja) * 2000-11-08 2005-07-27 シチズン時計株式会社 液晶表示装置
JP3494146B2 (ja) * 2000-12-28 2004-02-03 日本電気株式会社 有機ｅｌ駆動回路及びパッシブマトリクス有機ｅｌ表示装置並びに有機ｅｌ駆動方法
US6396308B1 (en) * 2001-02-27 2002-05-28 Sun Microsystems, Inc. Sense amplifier with dual linearly weighted inputs and offset voltage correction
JP3895199B2 (ja) * 2002-03-08 2007-03-22 株式会社 日立ディスプレイズ 表示装置
JP2004046124A (ja) * 2002-05-15 2004-02-12 Semiconductor Energy Lab Co Ltd パッシブマトリクス型発光装置
JP4004994B2 (ja) * 2003-06-05 2007-11-07 株式会社アドバンスト・ディスプレイ 表示装置
JP4111174B2 (ja) * 2003-08-08 2008-07-02 セイコーエプソン株式会社 電気光学パネル、電気光学装置及び電子機器
JP2005062582A (ja) * 2003-08-18 2005-03-10 Hitachi Displays Ltd 表示装置
KR100574368B1 (ko) * 2004-09-30 2006-04-27 엘지전자 주식회사 데이터 집적회로 및 이를 이용한 플라즈마 디스플레이패널의 구동장치
JP2006106077A (ja) * 2004-09-30 2006-04-20 Seiko Epson Corp 電気光学装置及び電子機器
JP4869744B2 (ja) * 2006-03-09 2012-02-08 株式会社 日立ディスプレイズ Ｌｅｄ照明装置及びこれを用いた液晶表示装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002151276A (ja) * 2000-08-10 2002-05-24 Semiconductor Energy Lab Co Ltd 表示装置及び電子機器
JP2003131617A (ja) * 2001-10-26 2003-05-09 Oki Electric Ind Co Ltd 駆動回路
CN1421833A (zh) * 2001-11-22 2003-06-04 奇美电子股份有限公司 平面显示器及其驱动芯片
JP2004206056A (ja) * 2002-06-21 2004-07-22 Seiko Epson Corp ディスプレイ用基板、電気光学装置、及び電子機器
CN1601336A (zh) * 2003-09-24 2005-03-30 精工爱普生株式会社 电光装置及电子设备
JP2005144685A (ja) * 2003-11-11 2005-06-09 Seiko Epson Corp ラインヘッドおよびそれを用いた画像形成装置

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JP4425264B2 (ja) 2010-03-03
US20170148381A1 (en) 2017-05-25
US9799265B2 (en) 2017-10-24
US9208716B2 (en) 2015-12-08
US20140176522A1 (en) 2014-06-26
KR101451770B1 (ko) 2014-10-16
US20160055795A1 (en) 2016-02-25
CN101206831A (zh) 2008-06-25

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