JP2006227230A - Panel for liquid crystal display - Google Patents

Panel for liquid crystal display Download PDF

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JP2006227230A
JP2006227230A JP2005039976A JP2005039976A JP2006227230A JP 2006227230 A JP2006227230 A JP 2006227230A JP 2005039976 A JP2005039976 A JP 2005039976A JP 2005039976 A JP2005039976 A JP 2005039976A JP 2006227230 A JP2006227230 A JP 2006227230A
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liquid crystal
connection electrode
wiring
electrode
crystal display
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Kanetaka Sekiguchi
関口  金孝
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Citizen Watch Co Ltd
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Citizen Watch Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To obtain a connection structure of a drive circuit of a liquid crystal display panel which is provided with an optimum condition as a color liquid crystal display panel and which is highly reliable, even when a pixel pitch of the color liquid crystal display panel is made into an intricate tiny form. <P>SOLUTION: The liquid crystal display panel has a set of mutually adjacent display electrodes (Y1, Y2, Y3) connected to connection electrode pads (116, 117, 118) via wiring electrodes (113, 114, 115), and the liquid crystal display panel is characterized in that mutually adjacent display electrodes of respective red, green, and blue color pixel portions are grouped as a set, and a plurality of connection electrode pads corresponding to the one set of the display electrodes are arranged in series in the direction perpendicularly intersecting an outer edge of a display region. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は液晶表示装置に係り、カラー液晶表示パネルの配線電極と接続電極パッドの構造に関する。   The present invention relates to a liquid crystal display device, and more particularly to a structure of wiring electrodes and connection electrode pads of a color liquid crystal display panel.

近年OA(Office Automation)機器の軽量・薄型・短小化や電子システム手帳などPDA(Personal Digital Assistance)機器の高機能・大画面化に伴い、液晶表示パネルの高密度化と有効表示面積の拡大要求は留まらない。   In recent years, with the increasing functionality and large screens of PDA (Personal Digital Assistance) devices such as OA (Office Automation) devices that are lighter, thinner and shorter, and electronic system notebooks, there is a demand for higher density of liquid crystal display panels and expansion of effective display area. Does not stop.

液晶表示パネルは対向する基板2枚のマトリックス状電極により基板間の液晶を駆動するが、液晶表示パネルの高密度化、すなわち画素の細密化によりそれぞれの表示電極は細ピッチとなり、これに伴い引き出し配線部および液晶表示パネル駆動回路を接合あるいは液晶表示パネル駆動集積回路を搭載する接続電極パッド部、いわゆる液晶表示パネルの額縁は更なる狭小化を迫られている。   The liquid crystal display panel drives the liquid crystal between the substrates by the matrix electrodes on the two opposing substrates. However, due to the high density of the liquid crystal display panel, that is, the finer pixels, each display electrode has a fine pitch, and is pulled out accordingly. The connection electrode pad portion on which the wiring portion and the liquid crystal display panel drive circuit are joined or the liquid crystal display panel drive integrated circuit is mounted, that is, the frame of the so-called liquid crystal display panel is required to be further narrowed.

液晶表示パネルの駆動回路は一般的に接続電極パッド部に直接液晶表示パネル駆動集積回路を搭載するCOG(Chip On Glass)実装、あるいは接続電極パッド部に液晶表示パネル駆動集積回路を搭載したテープフィルムの液晶表示パネル駆動回路を接続するTAB(Tape Automated Bonding)実装という方法があるが、いずれの方法においても接続パッド部は可能な限り大きくして液晶表示パネル駆動集積回路あるいは液晶表示パネル駆動集積回路を搭載したテープフィルムとの確実な導通と強固な接続が要求される。   The drive circuit of a liquid crystal display panel is generally a tape film in which a liquid crystal display panel driving integrated circuit is mounted on the connection electrode pad portion or a COG (Chip On Glass) mounting in which the liquid crystal display panel driving integrated circuit is directly mounted on the connection electrode pad portion. There is a method called TAB (Tape Automated Bonding) mounting for connecting the liquid crystal display panel drive circuit, but in either method, the connection pad portion is made as large as possible, and the liquid crystal display panel drive integrated circuit or the liquid crystal display panel drive integrated circuit Secure connection and strong connection with tape film equipped with is required.

図3は従来の液晶表示パネルの平面図であり、図4は図3に示す液晶表示パネルのB−B断面図である。図3において300は液晶表示パネル、301は表示領域、313はY配線電極領域、316はY接続電極パッド領域、323はX配線電極領域、326はX接続電極パッド領域であり、311は表示領域301のY側外周辺、321は表示領域301のX側外周辺、Aは後述する電極配線詳細部を示す。   3 is a plan view of a conventional liquid crystal display panel, and FIG. 4 is a cross-sectional view taken along the line BB of the liquid crystal display panel shown in FIG. 3, 300 is a liquid crystal display panel, 301 is a display area, 313 is a Y wiring electrode area, 316 is a Y connection electrode pad area, 323 is an X wiring electrode area, 326 is an X connection electrode pad area, and 311 is a display area. Reference numeral 301 denotes an outer periphery on the Y side, reference numeral 321 denotes an outer periphery on the X side of the display area 301, and reference numeral A denotes an electrode wiring detail portion described later.

図4に示す液晶表示パネルのB−B断面図はCOG実装で、接続電極パッド領域に液晶表示パネル駆動集積回路を直接搭載した例で説明する。前記液晶表示パネル300の構成において、411は第1基板、421は第2基板、401は液晶層、412は表示電極群、422は対向電極群、429はカラーフィルタ、430は液晶表示パネル駆動集積回路である。   The cross-sectional view taken along the line BB of the liquid crystal display panel shown in FIG. 4 will be described by an example in which the liquid crystal display panel driving integrated circuit is directly mounted in the connection electrode pad region by COG mounting. In the configuration of the liquid crystal display panel 300, 411 is a first substrate, 421 is a second substrate, 401 is a liquid crystal layer, 412 is a display electrode group, 422 is a counter electrode group, 429 is a color filter, 430 is a liquid crystal display panel driving integration. Circuit.

液晶表示パネル300の第1基板411と第2基板421は透明なガラス基板であって、第1基板411と第2基板421の対向する面の第1基板411側には表示電極群412、第2基板421にはカラーフィルタ429と対向電極群422を設けてあり、この表示電極群412と対向電極群422との間には液晶を注入した液晶層401が存在する。   The first substrate 411 and the second substrate 421 of the liquid crystal display panel 300 are transparent glass substrates, and the display electrode group 412 and the first electrode 411 are arranged on the first substrate 411 side of the opposing surface of the first substrate 411 and the second substrate 421. The two substrates 421 are provided with a color filter 429 and a counter electrode group 422, and a liquid crystal layer 401 into which liquid crystal is injected exists between the display electrode group 412 and the counter electrode group 422.

前記液晶表示パネル300において、表示領域301には第1基板411上に設けた表示電極群412と、第2基板421上に設けた前記表示電極群412と直交する対向電極群422があり、前記表示電極群412と前記対向電極群422の電極の重なり部分にはマトリックス型の画素部が配置されている。画素部は行と列とに配置され、この表示領域301の表示電極群412からY配線電極領域313を介してY接続電極パッド領域316へ配線され、また対向電極群422からX配線電極領域323を介してX接続電極パッド領域326へ配線されている。そしてこのY接続電極パッド領域316およびX接続電極パッド領域326に液晶表示パネル駆動集積回路430を搭載している。   In the liquid crystal display panel 300, the display region 301 includes a display electrode group 412 provided on the first substrate 411 and a counter electrode group 422 orthogonal to the display electrode group 412 provided on the second substrate 421. A matrix type pixel portion is arranged in an overlapping portion of the electrodes of the display electrode group 412 and the counter electrode group 422. The pixel portions are arranged in rows and columns, wired from the display electrode group 412 of the display region 301 to the Y connection electrode pad region 316 via the Y wiring electrode region 313, and from the counter electrode group 422 to the X wiring electrode region 323. To the X connection electrode pad region 326. A liquid crystal display panel driving integrated circuit 430 is mounted on the Y connection electrode pad region 316 and the X connection electrode pad region 326.

なお、図4のB−B断面図において、第2基板421上の対向電極群422からX配線電極領域323を経由してX接続電極パッド領域326へ導通する配線も存在して液晶表示パネル駆動集積回路を搭載してあるが、同断面図には図示していない。   In the cross-sectional view taken along the line BB in FIG. 4, there is also a wiring that conducts from the counter electrode group 422 on the second substrate 421 to the X connection electrode pad region 326 via the X wiring electrode region 323, and the liquid crystal display panel drive Although an integrated circuit is mounted, it is not shown in the sectional view.

また、対向電極群422は第2基板421側にあり、X配線電極領域323およびX接続電極パッド領域326を同一の第2基板421上に形成する場合と、X配線電極領域323とX接続電極パッド領域326とを第1基板411上に形成し、第2基板421側の対向電極群422と第1基板411側のX配線領域323とを、前記表示領域301のX側外周辺321に設けた接続電極により導通させる場合があり、本実施例では後者の構成を示している。   The counter electrode group 422 is on the second substrate 421 side, and the X wiring electrode region 323 and the X connection electrode pad region 326 are formed on the same second substrate 421, and the X wiring electrode region 323 and the X connection electrode are formed. A pad region 326 is formed on the first substrate 411, and a counter electrode group 422 on the second substrate 421 side and an X wiring region 323 on the first substrate 411 side are provided on the X-side outer periphery 321 of the display region 301. In some cases, the latter configuration is shown in this embodiment.

なお、前記液晶表示パネル300がTFT(Thin Film Transistor)方式の場合は表示電極群412がマトリックス型の画素部を形成し、対向電極群422は1枚の電極で形成している。また、前記液晶表示パネル300が、反射型の場合は第1基板411の外側に反射板が配置されるが、いずれの場合も接続電極と接続電極パッドに関しては略同一の構造である。 When the liquid crystal display panel 300 is a TFT (Thin Film Transistor) type, the display electrode group 412 forms a matrix type pixel portion, and the counter electrode group 422 is formed by one electrode. Further, when the liquid crystal display panel 300 is of a reflective type, a reflection plate is disposed outside the first substrate 411. In either case, the connection electrodes and the connection electrode pads have substantially the same structure.

図3および図4で説明した液晶表示パネル構造においては、液晶表示パネルの高密度化、すなわち画素の細密化を行うと電極配置が平面構造であることから当然画素間隔は狭小となり、この結果、画素から液晶表示パネルの外周へ引き出す配線電極は細ピッチとなり、これに接続する接続電極パッド幅も配線電極と同様に狭小となってしまう。   In the liquid crystal display panel structure described with reference to FIG. 3 and FIG. 4, when the density of the liquid crystal display panel is increased, that is, when the pixels are finer, the electrode arrangement is naturally a flat structure, and as a result, the pixel interval is reduced. The wiring electrodes drawn out from the pixels to the outer periphery of the liquid crystal display panel have a fine pitch, and the width of the connection electrode pad connected to the wiring electrodes is narrow as in the case of the wiring electrodes.

しかし液晶表示パネル駆動集積回路を接続する接続電極パッド幅は可能な限り大きいことが望ましいことは先に述べた通りである。従来技術の液晶表示パネル構造における接続電極パッド幅の拡大手法を以下の図5にもとづいて説明する。   However, as described above, it is desirable that the width of the connection electrode pad for connecting the liquid crystal display panel driving integrated circuit is as large as possible. A method for expanding the connection electrode pad width in the conventional liquid crystal display panel structure will be described with reference to FIG.

図5は従来技術の液晶表示パネルの配線図を示し、図3における電極配線詳細部Aに対応する。図5において前記表示領域301に設けられた表示電極群412は複数の表示電極Y1、Y2、Y3等で形成され、前記対向電極群422は複数の対向電極X1、X2、X3等で形成されており、表示電極群412の各表示電極Y1、Y2、Y3と対向電極群422の各対向電極X1、X2、X3が直交交差する重なり部がひとつの画素を形成している。一例として表示電極Y3と対向電極X1が重なる部分G13がひとつの画素である。   FIG. 5 shows a wiring diagram of a conventional liquid crystal display panel, which corresponds to the electrode wiring detail portion A in FIG. In FIG. 5, the display electrode group 412 provided in the display region 301 is formed by a plurality of display electrodes Y1, Y2, Y3, etc., and the counter electrode group 422 is formed by a plurality of counter electrodes X1, X2, X3, etc. In addition, an overlapping portion where each display electrode Y1, Y2, Y3 of the display electrode group 412 and each counter electrode X1, X2, X3 of the counter electrode group 422 intersect at right angles forms one pixel. As an example, a portion G13 where the display electrode Y3 and the counter electrode X1 overlap is one pixel.

前記表示領域301の隣接する表示電極Y1、Y2、Y3を1組とした場合、前記Y接続電極パッド領域316には、前記表示電極Y1、Y2、Y3に対応して第1接続電極パッド516、第2接続電極パッド517、第3接続電極パッド518を設け、これらの接続電極パッド516、517、518は各々前記Y配線電極領域313に設けた第1配線電極513、第2配線電極514、第3配線電極515により前記表示領域301の表示電極Y1、Y2、Y3に接続されている。   When the display electrodes Y1, Y2, and Y3 adjacent to each other in the display area 301 are set as one set, the Y connection electrode pad area 316 includes first connection electrode pads 516 corresponding to the display electrodes Y1, Y2, and Y3, A second connection electrode pad 517 and a third connection electrode pad 518 are provided, and these connection electrode pads 516, 517, and 518 are the first wiring electrode 513, the second wiring electrode 514, the second wiring electrode 513 provided in the Y wiring electrode region 313, respectively. The three wiring electrodes 515 are connected to the display electrodes Y1, Y2, and Y3 in the display region 301.

同様に前記X接続電極パッド領域326には、前記表示領域301の隣接する対向電極X1、X2、X3を1組とした場合、これらの対向電極X1、X2、X3に対応して第1接続電極パッド526、第2接続電極パッド527、第3接続電極パッド528を設け、これらの接続電極パッド526、527、528は各々前記X配線電極領域323に設けた第1配線電極523、第2配線電極524、第3配線電極525により前記表示領域301の対向電極X1、X2、X3に接続されている。   Similarly, in the X connection electrode pad region 326, when the counter electrodes X1, X2, and X3 adjacent to each other in the display region 301 are set as a pair, the first connection electrodes corresponding to these counter electrodes X1, X2, and X3 are used. A pad 526, a second connection electrode pad 527, and a third connection electrode pad 528 are provided. These connection electrode pads 526, 527, and 528 are the first wiring electrode 523 and the second wiring electrode provided in the X wiring electrode region 323, respectively. 524 and the third wiring electrode 525 are connected to the counter electrodes X1, X2, and X3 of the display region 301.

しかしこれらの隣接する表示電極Y1、Y2、Y3に対応する接続電極パッド516、
517、518を前記表示領域301のY側外周辺311に対して平行に並べた場合には、隣接する接続電極パッド同士が接触しないように各接続電極パッド516、517、518の幅は各表示電極Y1、Y2、Y3の幅と同じか前記各表示電極の幅以下に狭くする必要があり、画素の細密化を行うと液晶表示パネル駆動集積回路の接続に必要な接続電極パッド幅を確保できないという問題があった。
However, connection electrode pads 516 corresponding to these adjacent display electrodes Y1, Y2, Y3,
When 517 and 518 are arranged in parallel to the Y-side outer periphery 311 of the display region 301, the width of each connection electrode pad 516, 517, and 518 is set to each display so that adjacent connection electrode pads do not contact each other. The width of the electrodes Y1, Y2 and Y3 must be the same as or smaller than the width of each display electrode. If the pixels are made finer, the connection electrode pad width necessary for connecting the liquid crystal display panel driving integrated circuit cannot be secured. There was a problem.

図5のY接続電極パッド領域316は、この問題を解決するための接続電極パッドの配置を示すもので、前記表示領域301のY側外周辺311に対して符号VYおよび矢印で示す直交方向に、前記1組の接続電極パッドである第1接続電極パッド516と第3接続電極パッド518は前記表示領域301に近い位置に、中央の第2接続電極パッド517は前記表示領域301より遠い位置に交互に配置し、前記第2接続電極パッド517への配線電極514は第1接続電極パッド516および第3接続電極パッド518の間に配置する、いわゆる千鳥配置としている。この結果、前記1組の表示電極Y1、Y2、Y3の範囲幅130において接続電極パッドの幅を表示電極の幅より広くすることができる。   The Y connection electrode pad region 316 in FIG. 5 shows the arrangement of connection electrode pads for solving this problem. The Y connection electrode pad region 316 is orthogonal to the Y side outer periphery 311 of the display region 301 in the orthogonal direction indicated by reference sign VY and an arrow. The first connection electrode pad 516 and the third connection electrode pad 518 which are the pair of connection electrode pads are close to the display area 301, and the central second connection electrode pad 517 is far from the display area 301. Alternatingly arranged, the wiring electrodes 514 to the second connection electrode pads 517 are arranged between the first connection electrode pads 516 and the third connection electrode pads 518 so-called staggered arrangement. As a result, the width of the connection electrode pad can be made wider than the width of the display electrode in the range width 130 of the set of display electrodes Y1, Y2, and Y3.

なお、上記説明においては隣接する表示電極Y1、Y2、Y3を1組とする接続電極の範囲516aについての千鳥配置を説明したが、隣接する1組の接続電極の範囲516bはY側外周辺311に対して直交方向の接続電極パッド配置が逆転する。しかし、隣り合った接続電極パッドで見れば同じY側外周辺311に対して直交方向に、1個おきに交互に配置した千鳥配置の構成になっている。   In the above description, the staggered arrangement of the connection electrode range 516a including the adjacent display electrodes Y1, Y2, and Y3 as one set has been described. However, the adjacent set of connection electrode ranges 516b includes the Y-side outer periphery 311. The connection electrode pad arrangement in the orthogonal direction is reversed. However, when viewed from adjacent connection electrode pads, every other one is alternately arranged in the orthogonal direction with respect to the same Y-side outer periphery 311.

かくして、図5に示す如く前記表示領域301のすべての表示電極に対応する接続電極パッドを表示領域301のY側外周辺311に対して直交方向に、1個おきに交互に配置することで、前記Y接続電極パッド領域316のすべての接続電極パッドが千鳥配置されるものである。同様に対向電極X1、X2、X3についても前記X接続電極パッド領域316のすべての接続電極パッドを、前記表示領域301のX側外周辺321に対して1個おきに交互に配置することで、前記X接続電極パッド領域326のすべての接続電極パッドが千鳥配置されるものである。   Thus, as shown in FIG. 5, the connection electrode pads corresponding to all the display electrodes in the display region 301 are alternately arranged in the orthogonal direction with respect to the Y-side outer periphery 311 of the display region 301. All the connection electrode pads in the Y connection electrode pad region 316 are staggered. Similarly, with respect to the counter electrodes X1, X2, and X3, all the connection electrode pads in the X connection electrode pad region 316 are alternately arranged with respect to the X-side outer periphery 321 of the display region 301 alternately. All the connection electrode pads in the X connection electrode pad region 326 are staggered.

すなわち、従来技術の液晶表示パネルの接続電極パッドは、表示領域301に近い位置と表示領域301より遠い位置に、配線電極1本毎に接続電極パッドを交互に配置する千鳥配置として、表示領域301に近い接続電極パッドの間を表示領域301より遠い接続電極パッドへの接続電極を通すことで、各接続電極パッドを前記表示領域301の外周辺に対して平行に並べた場合より広い接続電極パッド幅を確保する構成が取られていた。   That is, the connection electrode pads of the conventional liquid crystal display panel are arranged in a staggered arrangement in which connection electrode pads are alternately arranged for each wiring electrode at a position close to the display area 301 and a position far from the display area 301. The connection electrode pads wider than the case where the connection electrode pads are arranged in parallel to the outer periphery of the display region 301 by passing the connection electrodes to the connection electrode pads far from the display region 301 between the connection electrode pads close to the display region 301 The structure which secured the width was taken.

特開2002−196703JP2002-196703

しかし、図5に示す千鳥配置された接続電極パッドにおいても、接続電極パッドを表示領域301の外周辺に対して平行に並べた場合に比べると、前記千鳥配置された場合の接続電極パッドの幅は前記平行に並べた場合の接続電極パッド幅の1.5倍以下にしかならない。   However, even in the connection electrode pads arranged in a staggered pattern shown in FIG. 5, the width of the connection electrode pads in the staggered arrangement as compared with the case where the connection electrode pads are arranged in parallel to the outer periphery of the display region 301. Is less than 1.5 times the width of the connection electrode pad when arranged in parallel.

このことを図5により説明すると、Y接続電極パッド領域316において、前記1組の表示電極Y1、Y2、Y3に対応する接続電極パッド516、517、518の占めることができる幅130は、前記表示電極Y1、Y2、Y3の幅、すなわち表示電極3個分の幅であり、表示領域301に近い位置に接続電極パッド516と518の2個を並べ、表示領域301より遠い位置に接続電極パッド517を配置する千鳥配置構造としてある。   This will be described with reference to FIG. 5. In the Y connection electrode pad region 316, the width 130 that can be occupied by the connection electrode pads 516, 517, and 518 corresponding to the one set of display electrodes Y1, Y2, and Y3 is the display area. The width of the electrodes Y 1, Y 2, Y 3, that is, the width of three display electrodes, two connection electrode pads 516 and 518 are arranged at a position close to the display area 301, and the connection electrode pad 517 is positioned far from the display area 301. This is a staggered arrangement structure.

従って、表示領域301に近い位置に配置する接続電極パッド516と518の確保できる最大電極幅は前記表示電極Y1、Y2、Y3の3個分の幅を2等分した幅、すなわち前記表示電極1個の幅の1.5倍であるが、実際には表示電極Y2と表示領域301より遠い位置の接続電極パッド517を接続する配線電極514を前記表示領域301に近い位置の接続電極パッド516と518の間を通す配線スペース確保が必要なことから前記接続電極パッド516と518の幅は前記表示電極1個の幅の1.5倍には満たない。   Therefore, the maximum electrode width that can be secured for the connection electrode pads 516 and 518 arranged near the display region 301 is a width obtained by dividing the width of the three display electrodes Y1, Y2, and Y3 into two, that is, the display electrode 1 The wiring electrode 514 that connects the display electrode Y2 and the connection electrode pad 517 far from the display area 301 is actually connected to the connection electrode pad 516 at a position close to the display area 301. Since it is necessary to secure a wiring space for passing between 518, the width of the connection electrode pads 516 and 518 is less than 1.5 times the width of one display electrode.

また、液晶表示パネルの高密度化、すなわち画素の細密化を実施すると前記表示電極Y1、Y2等の表示電極幅が狭小となるばかりでなく、線間絶縁確保のため前記表示領域301に近い位置の接続電極パッド516と518間を通す前記配線電極514の配線スペースの占める割合が増加するので前記接続電極パッド516、518等の電極パッド幅はさらに狭小となり、前述の接続電極パッドを表示領域301の外周辺に対して平行に並べた場合との優位さがなくなる場合もあった。   Further, when the density of the liquid crystal display panel is increased, that is, the pixels are made finer, not only the width of the display electrodes Y1, Y2, etc. is narrowed, but also the position close to the display region 301 in order to ensure insulation between lines. Since the proportion of the wiring space of the wiring electrode 514 passing between the connection electrode pads 516 and 518 increases, the width of the electrode pads of the connection electrode pads 516 and 518 and the like is further reduced, and the connection electrode pads are displayed in the display region 301. In some cases, the superiority to the case of arranging them in parallel with respect to the outer periphery of each of them was lost.

さらに、カラー化した液晶表示パネルの表示電極配列は表示領域の外周辺に対して平行に3原色の循環、すなわち隣接する表示電極Y1を赤色(R)、Y2を緑(G)、Y3を青色(B)とする表示電極ブロックとすると、これに続くブロックもR、G、B、R、G、B、R、G、Bの配列とする必要がある。   Further, the display electrode arrangement of the colorized liquid crystal display panel is a circulation of three primary colors parallel to the outer periphery of the display area, that is, the adjacent display electrode Y1 is red (R), Y2 is green (G), and Y3 is blue. Assuming that the display electrode block is (B), the subsequent blocks must also be arranged in R, G, B, R, G, B, R, G, B.

この3色のR、G、Bの繰り返しに対して、千鳥配置の接続電極パッド構造では表示電極1本おきに表示領域の外周辺に対して近い位置と遠い位置に接続電極パッドを配置するから、表示電極と接続電極パッドを接続する配線電極の長さが交互に長短を繰り返すことになる。この結果、配線電極の抵抗や隣接する電極との浮遊容量による相互干渉の条件は表示電極2本毎の繰り返しとなる。   With respect to the repetition of the three colors R, G, and B, in the connection electrode pad structure of the staggered arrangement, the connection electrode pads are arranged at positions close to and far from the outer periphery of the display area every other display electrode. The lengths of the wiring electrodes connecting the display electrodes and the connection electrode pads are alternately repeated longer and shorter. As a result, the condition of mutual interference due to the resistance of the wiring electrode and the stray capacitance with the adjacent electrode is repeated for every two display electrodes.

従って、R、G、Bの3本を1組とする表示電極の配列に対して、千鳥配置の接続電極パッドは表示領域の外周辺に対して近い位置と遠い位置の表示電極2本毎の繰り返しであるから、同一色の配線電極の抵抗や隣接する電極との浮遊容量による相互干渉の条件は、3本と2本の公約数である6本毎になり、せっかく液晶表示パネルを細密化しても表示条件が粗くなってしまうという課題もあった。   Therefore, in contrast to the display electrode arrangement in which R, G, and B are set as one set, the staggered connection electrode pads are provided for each of the two display electrodes at positions close to and far from the outer periphery of the display area. Since it is repeated, the condition of mutual interference due to the resistance of the wiring electrode of the same color and the stray capacitance with the adjacent electrode is every 6 which is a common divisor of 3 and 2, and the liquid crystal display panel is made finer. However, there is a problem that the display conditions become rough.

また、接続電極パッドに液晶表示パネル駆動集積回路の電気的接続を行うには、接続電極パッドの大きさが一定面積以上ないと電気的接続の信頼性は確保できない。このため、前記接続電極パッド516、517等の電極パッドの形状は接続電極パッド幅が狭小な分だけ前記表示領域301のY側外周辺311に対して直交方向に長さを大きくして面積を確保する必要があった。この結果、画素の細密化に伴い接続電極パッドの形状が極端に細長い長方形となってしまい、この形状の悪さが液晶表示パネル駆動集積回路との電気的接続を行う上で信頼性を損なうという問題もあった。   Further, in order to electrically connect the liquid crystal display panel driving integrated circuit to the connection electrode pad, the reliability of the electrical connection cannot be ensured unless the size of the connection electrode pad exceeds a certain area. For this reason, the shape of the electrode pads such as the connection electrode pads 516 and 517 is increased by increasing the length in the orthogonal direction with respect to the Y-side outer periphery 311 of the display region 301 by an amount corresponding to the narrow connection electrode pad width. It was necessary to secure. As a result, the shape of the connection electrode pad becomes an extremely elongated rectangle as the pixels become finer, and the bad shape impairs the reliability of the electrical connection with the liquid crystal display panel driving integrated circuit. There was also.

すなわち、本発明の目的は、カラー液晶表示パネルの画素ピッチを細密化してもカラー液晶表示パネルとしての最適な条件、すなわち、同一カラー画素に対して同一の駆動条件を備え、信頼性の高い液晶表示パネルと液晶表示パネル駆動回路あるいは液晶表示パネル駆動集積回路との接続構造を実現することであり、構造的にはカラー3原色に対して単純な繰り返しパターンとすることで、接続電極パッド幅が画素ピッチの2倍以上の幅広を確保できて、表示領域の外周辺に対して直交方向にも自由度があり、接続電極パッド面積設定が容易な液晶表示パネルを提供することであり、液晶表示パネルの高密度化に伴う狭小画素ピッチに起因する配線電極間の絶縁不良を防ぎ、カラー液晶表示パネル駆動の電気的特性にも優れ、液晶表示パネル駆動集積回路設計の容易さも兼ね備えた信頼性の高い高密度化液晶表示パネルを提供することにある。   That is, it is an object of the present invention to provide a highly reliable liquid crystal that has optimum conditions as a color liquid crystal display panel even when the pixel pitch of the color liquid crystal display panel is made fine, that is, the same driving condition for the same color pixel. This is to realize a connection structure between the display panel and the liquid crystal display panel drive circuit or the liquid crystal display panel drive integrated circuit. In terms of structure, the connection electrode pad width is reduced by adopting a simple repetitive pattern for the three primary colors. The present invention provides a liquid crystal display panel that can secure a width that is at least twice the pixel pitch, has a degree of freedom in the orthogonal direction with respect to the outer periphery of the display area, and can easily set the connection electrode pad area. Prevents poor insulation between wiring electrodes due to narrow pixel pitch due to higher density of panels, and has excellent electrical characteristics for driving color liquid crystal display panels. To provide a dynamic integrated circuit ease even higher density liquid crystal display panel having high reliability both designs.

上記目的を達成するための本発明の液晶表示パネルは、第1の基板と第2の基板の間隙に液晶層を有し、前記第1の基板上に設ける表示電極と、第2の基板上に設ける対抗電極との重なり部を赤色、緑色、青色の各カラー画素部として表示領域を形成し、該表示領域は複数の行と列に画素部を設けるマトリックス型を有し、前記表示電極は配線電極を介して接続電極パッドに接続する液晶表示パネルにおいて、前記画素部の隣接する赤色、緑色、青色の各カラー画素部の表示電極を1組とし、該1組の表示電極に対応する複数の接続電極パッドを前記表示領域の外周辺に対して直交方向に直列配置したことを特徴とする。   In order to achieve the above object, a liquid crystal display panel of the present invention has a liquid crystal layer in the gap between a first substrate and a second substrate, a display electrode provided on the first substrate, and a second substrate. The display region is formed as a red, green, and blue color pixel portion that overlaps with the counter electrode provided in the display region, and the display region has a matrix type in which pixel portions are provided in a plurality of rows and columns. In a liquid crystal display panel connected to a connection electrode pad via a wiring electrode, a display electrode of each of the color pixel portions of red, green, and blue adjacent to the pixel portion is set as one set, and a plurality of pieces corresponding to the one set of display electrodes The connection electrode pads are arranged in series in an orthogonal direction with respect to the outer periphery of the display region.

すなわち、本発明の液晶表示パネルは赤色、緑色、青色の各カラー画素部の表示電極を1組とし、前記1組の表示電極に対応する接続電極パッドを表示領域の外周辺に対して直交方向に直列配置してあるので前記接続電極パッド領域は直列方向に同一順序のカラー対応の1組の接続電極パッドを前記表示領域の外周辺に対して水平方向に並列に並べる構成である。従って、各カラーに対応する接続電極パッドの配置と配線条件は全ての接続電極パッド領域において同一パターンで構成することになり、画質の向上に加えて前記接続電極パッドに接続する液晶表示パネル駆動集積回路設計も容易となる。   That is, in the liquid crystal display panel of the present invention, the display electrodes of the color pixel portions of red, green, and blue are one set, and the connection electrode pads corresponding to the one set of display electrodes are orthogonal to the outer periphery of the display area. Since the connection electrode pad region is arranged in series, the pair of connection electrode pads corresponding to the same color in the same order is arranged in parallel in the horizontal direction with respect to the outer periphery of the display region. Accordingly, the arrangement and wiring conditions of the connection electrode pads corresponding to each color are configured in the same pattern in all the connection electrode pad regions, and in addition to the improvement of the image quality, the liquid crystal display panel driving integration connected to the connection electrode pads is performed. Circuit design is also easy.

前記表示領域の外周辺に対して直交方向に直列配置された接続電極パッドは、前記表示領域に近い方から遠い方に向って緑色、赤色、青色の順に配設されていることを特徴とする。   The connection electrode pads arranged in series in the orthogonal direction with respect to the outer periphery of the display area are arranged in order of green, red, and blue from the side closer to the display area toward the far side. .

すなわち、本発明の液晶表示パネルは視覚的に最も重要で良い条件を必要とする緑色接続電極パッドを表示領域に近い方に配置し、以下順に赤色接続電極パッド、青色接続電極パッドを配置することで、重要なカラーの配線電極を短くして配線抵抗および他の配線および接続電極パッドとの浮遊容量による相互干渉を削減している。   That is, in the liquid crystal display panel of the present invention, the green connection electrode pads that require the most important visual conditions are arranged closer to the display area, and the red connection electrode pads and the blue connection electrode pads are arranged in the following order. Therefore, the wiring electrodes of important colors are shortened to reduce mutual interference due to wiring resistance and stray capacitance with other wirings and connection electrode pads.

前記1組の表示電極と接続電極パッドとを接続する1組の配線電極には各配線電極の配線電極抵抗を個別に調整するための配線電極抵抗調整手段が設けられていることを特徴とする。   A set of wiring electrodes for connecting the set of display electrodes and connection electrode pads is provided with wiring electrode resistance adjusting means for individually adjusting the wiring electrode resistance of each wiring electrode. .

すなわち、本発明の液晶表示パネルは1組の接続電極パッドを表示領域外周辺に対して直交方向に直列配置してあるため表示領域に近い配線電極は短くて抵抗値は小さく、表示領域より遠い配線電極は長くて抵抗値は大きくなるが、各配線電極の配線電極抵抗を調整することで各接続電極パッド、すなわち、液晶表示パネル駆動回路側からみた液晶表示パネル駆動インピーダンス値を等しくできる。   That is, in the liquid crystal display panel of the present invention, a set of connection electrode pads are arranged in series in a direction orthogonal to the outer periphery of the display area, so that the wiring electrodes near the display area are short and have a small resistance value and are far from the display area. Although the wiring electrode is long and the resistance value is large, the liquid crystal display panel driving impedance value seen from each connection electrode pad, that is, the liquid crystal display panel driving circuit side can be made equal by adjusting the wiring electrode resistance of each wiring electrode.

前記配線電極抵抗調整手段が前記配線電極の電極幅を調整する手段であることを特徴とする。   The wiring electrode resistance adjusting means is means for adjusting an electrode width of the wiring electrode.

すなわち、本発明の液晶表示パネルは配線電極抵抗調整手段を配線電極の電極幅を調整することで配線抵抗調整部分の長さを増やすことなく各配線電極のインピーダンス値を均一化できる。   That is, the liquid crystal display panel of the present invention can make the impedance value of each wiring electrode uniform without increasing the length of the wiring resistance adjusting portion by adjusting the electrode width of the wiring electrode by the wiring electrode resistance adjusting means.

前記直列配置された接続電極パッドの数が3の倍数であることを特徴とする。   The number of connection electrode pads arranged in series is a multiple of three.

すなわち、本発明の液晶表示パネルは1組の直列配置された接続電極パッドの数が3の倍数であることから、カラー液晶表示パネルの表示色である3原色に対応し、かつ、接続電極パッド幅を格段に拡幅できて、同じ接続電極パッド構成の繰り返し構造であることから液晶表示パネル駆動集積回路の設計も容易となる。   That is, the liquid crystal display panel of the present invention corresponds to the three primary colors that are the display colors of the color liquid crystal display panel since the number of the series of connection electrode pads arranged in series is a multiple of 3, and the connection electrode pads The width can be remarkably increased, and the liquid crystal display panel driving integrated circuit can be easily designed because of the repeated structure of the same connection electrode pad configuration.

すなわち、本発明によれば、接続電極パッド幅が画素ピッチの2倍以上の幅広を確保でき、かつ、長手方向、すなわち表示領域側外周辺対する直交方向に対しても自由度があり、接続電極パッド面積設定が容易な液晶表示パネルであって、接続電極パッドと配線は緑色、赤色、青色の優先順で各カラーに対応した配置条件で、全ての接続電極パッド領域において同一パターンで構成し、液晶表示パネル駆動回路側からみた各表示電極の駆動インピーダンス値を揃えることで、画質の向上に加えて前記接続電極パッドに接続する液晶表示パネル駆動集積回路設計も容易な高密度化液晶表示パネルを提供することができる。   That is, according to the present invention, the connection electrode pad width can be ensured to be at least twice as wide as the pixel pitch, and there is a degree of freedom in the longitudinal direction, that is, the orthogonal direction with respect to the outer periphery on the display region side. It is a liquid crystal display panel with easy pad area setting, and the connection electrode pads and wiring are arranged in the same pattern in all connection electrode pad areas under the arrangement conditions corresponding to each color in the priority order of green, red, blue, By aligning the drive impedance value of each display electrode as seen from the liquid crystal display panel drive circuit side, in addition to improving the image quality, the liquid crystal display panel drive integrated circuit connected to the connection electrode pad can be designed easily. Can be provided.

以下、本発明の実施形態について図面にもとづいて説明する。本発明の液晶表示パネルの基本構造は先の図3の平面図、図4の断面図に示した従来の一般的な液晶表示パネルと共通する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. The basic structure of the liquid crystal display panel of the present invention is common to the conventional general liquid crystal display panel shown in the plan view of FIG. 3 and the sectional view of FIG.

図1は本発明の実施例であり、液晶表示パネルの詳細配線図であって、図3に示す液晶表示パネルのA部の詳細配線図である。図2は図1に示す本発明の配線電極と接続電極パッド構造の詳細平面図である。   1 is a detailed wiring diagram of a liquid crystal display panel according to an embodiment of the present invention, and is a detailed wiring diagram of a portion A of the liquid crystal display panel shown in FIG. 2 is a detailed plan view of the wiring electrode and connection electrode pad structure of the present invention shown in FIG.

図1において、前記表示領域301は、Y方向は表示電極Y1、Y2、Y3を形成し、X方向は対向電極X1、X2、X3を形成しており、表示電極Y1、Y2、Y3と対向電極X1、X2、X3とが直交交差するマトリックス型である。そして表示電極Y1、Y2、Y3と対向電極X1、X2、X3の重なり部がひとつの画素を形成しており、符号G11、G12、G13、G21、G22、G23、G31、G32、G33で示す交点に各画素を形成してある。本実施例においてはそれぞれ隣接する3個の表示電極Y1、Y2、Y3を一組とし、あるいは隣接する3個の対向電極X1、X2、X3を一組としている。   In FIG. 1, the display region 301 has display electrodes Y1, Y2, and Y3 formed in the Y direction, and counter electrodes X1, X2, and X3 formed in the X direction, and the display electrodes Y1, Y2, and Y3 and the counter electrodes are formed. It is a matrix type in which X1, X2, and X3 intersect at right angles. The overlapping portion of the display electrodes Y1, Y2, and Y3 and the counter electrodes X1, X2, and X3 forms one pixel. Each pixel is formed. In this embodiment, three adjacent display electrodes Y1, Y2, and Y3 are set as one set, or three adjacent counter electrodes X1, X2, and X3 are set as one set.

ここで、表示電極Y1、Y2、Y3は、カラー液晶パネルのY1が緑色、Y2が赤色、Y3が青色の表示電極に対応している。また、対向電極X1、X2、X3は、いわゆるコモン電極であって、カラー表示液晶パネルであってもモノクロ表示液晶パネルであっても差異は無いが、配線電極および接続電極パッドの電極構造は同じである。以下、一例として隣接する3個の表示電極Y1、Y2、Y3に関わる電極構造を説明する。 Here, the display electrodes Y1, Y2, and Y3 correspond to display electrodes in which Y1 of the color liquid crystal panel is green, Y2 is red, and Y3 is blue. The counter electrodes X1, X2, and X3 are so-called common electrodes, and there is no difference between a color display liquid crystal panel and a monochrome display liquid crystal panel, but the electrode structures of the wiring electrodes and connection electrode pads are the same. It is. Hereinafter, an electrode structure related to three display electrodes Y1, Y2, and Y3 adjacent to each other will be described as an example.

前記Y接続電極パッド領域316には前記表示電極Y1、Y2、Y3に対応する第1接続電極パッド116、第2接続電極パッド117、第3接続電極パッド118を表示領域301のY側外周辺311に対して直交方向に表示領域301の近くから前記接続電極パッド116、117、118の順に直列配置してあり、各表示電極と対応する各接続電極パッドは各々第1接続電極113、第2接続電極114、第3接続電極115を介して接続してある。   In the Y connection electrode pad region 316, the first connection electrode pad 116, the second connection electrode pad 117, and the third connection electrode pad 118 corresponding to the display electrodes Y1, Y2, and Y3 are arranged on the Y side outer periphery 311 of the display region 301. The connection electrode pads 116, 117, and 118 are arranged in series in the direction orthogonal to the display region 301 from the vicinity thereof, and the connection electrode pads corresponding to the display electrodes are the first connection electrode 113 and the second connection, respectively. The electrodes 114 and the third connection electrode 115 are connected.

また、Y接続電極パッド領域316内の第1接続電極パッド116、第2接続電極パッド117、第3接続電極パッド118の形状は前記Y側外周辺311に対する平行辺の長さが異なっている。すなわち表示領域301に近い第1接続電極パッド116の平行辺L1の長さが最も短く、以下第2電極パッド接続117の平行辺L2、第3接続電極パッド118の平行辺L3の順に長くなっている。   Further, the first connection electrode pad 116, the second connection electrode pad 117, and the third connection electrode pad 118 in the Y connection electrode pad region 316 have different parallel side lengths with respect to the Y-side outer periphery 311. In other words, the length of the parallel side L1 of the first connection electrode pad 116 close to the display region 301 is the shortest, and the parallel side L2 of the second electrode pad connection 117 and the parallel side L3 of the third connection electrode pad 118 become longer in this order. Yes.

そしてこれらの各接続電極パッドは図1に示す如く、前記Y側外周辺311に対する一方の直交辺を揃えて配置することにより、他方の直行辺側に前記各接続電極パッドの平行辺の長さの差にもとづく配線スペースを形成する。そしてこの配線スペースに前記Y配線電極領域313の第2配線電極114、第3配線電極115を配設するのである。   Then, as shown in FIG. 1, these connection electrode pads are arranged so that one orthogonal side with respect to the Y-side outer periphery 311 is aligned, so that the length of the parallel side of each connection electrode pad is on the other orthogonal side. A wiring space based on the difference is formed. Then, the second wiring electrode 114 and the third wiring electrode 115 in the Y wiring electrode region 313 are arranged in this wiring space.

その構造は、表示電極Y1と第1接続電極パッド116を接続する第1配線電極113は直接配線してあるが、表示電極Y2と第2接続電極パッド117を接続する第2配線電極114は前記第1接続電極パッド116と、第2接続電極パッド117との平行辺の長さの差にもとづく配線スペースに配設し、また表示電極Y3と第3接続電極パッド118を接続する第3配線電極115は前記第2接続電極パッド117と、前記第3接続電極パッド118との平行辺の長さの差にもとづく配線スペースに配設してある。   The structure is such that the first wiring electrode 113 connecting the display electrode Y1 and the first connection electrode pad 116 is directly wired, but the second wiring electrode 114 connecting the display electrode Y2 and the second connection electrode pad 117 is A third wiring electrode disposed in a wiring space based on a difference in length between parallel sides of the first connection electrode pad 116 and the second connection electrode pad 117, and connecting the display electrode Y3 and the third connection electrode pad 118. Reference numeral 115 denotes a wiring space based on the difference in length between parallel sides of the second connection electrode pad 117 and the third connection electrode pad 118.

すなわち、本実施例では表示電極Y1と第1接続電極パッド116間は第1配線電極113を介して接続してあり、同様に隣接する表示電極Y2、Y3と接続電極パッド117、118間は他の接続電極パッドを避けて配線電極114、115を介して接続してある。   That is, in this embodiment, the display electrode Y1 and the first connection electrode pad 116 are connected via the first wiring electrode 113, and the adjacent display electrodes Y2 and Y3 and the connection electrode pads 117 and 118 are similarly connected. The connection electrode pads are avoided and the wiring electrodes 114 and 115 are used for connection.

従って、表示領域301から近い第1接続電極パッド116の電極パッド幅は狭く、第2接続電極パッド117、第3接続電極パッド118の順に接続電極パッド幅は広くなり、各接続電極パッド116、117、118の平行辺の長さに差異が生じるが、本実施例においては、各接続電極パッド116、117、118の直交辺の長さを変えることで各接続電極パッド116、117、118の面積を略同じにしている。   Accordingly, the electrode pad width of the first connection electrode pad 116 close to the display region 301 is narrow, the connection electrode pad width becomes wider in the order of the second connection electrode pad 117 and the third connection electrode pad 118, and each connection electrode pad 116, 117. 118, the lengths of the parallel sides of the connection electrode pads 116, 117, 118 are changed by changing the lengths of the orthogonal sides of the connection electrode pads 116, 117, 118 in this embodiment. Are approximately the same.

また、前記Y接続電極パッド領域316の第1接続電極パッド116、第2接続電極パッド117、第3接続電極パッド118は表示領域301の隣接する表示電極Y1、Y2、Y3と対応していて、それぞれをY配線領域313の第1配線電極113、第2配線電極114、第3配線電極115を介して接続してあるが、このY配線電極領域313、Y接続電極パッド領域316の全面には絶縁膜106を形成してある。   The first connection electrode pad 116, the second connection electrode pad 117, and the third connection electrode pad 118 in the Y connection electrode pad region 316 correspond to the adjacent display electrodes Y1, Y2, and Y3 in the display region 301, respectively. Each of them is connected through the first wiring electrode 113, the second wiring electrode 114, and the third wiring electrode 115 in the Y wiring region 313. The Y wiring electrode region 313 and the Y connection electrode pad region 316 are all over the entire surface. An insulating film 106 is formed.

また、Y接続電極パッド領域316には液晶パネル駆動集積回路430を搭載するが、前記各接続電極パッド116、117、118上の前記絶縁膜106には前記液晶パネル駆動集積回路430の接続部に合わせて絶縁膜開口116a、117a、118aを設けてあり、前記液晶パネル駆動集積回路430の対応する電極と各接続電極パッド116、117、118は前記絶縁膜開口116a、117a、118aを通して導通接続を行うのである。   A liquid crystal panel driving integrated circuit 430 is mounted on the Y connection electrode pad region 316, and the insulating film 106 on each of the connection electrode pads 116, 117, 118 is connected to the connection portion of the liquid crystal panel driving integrated circuit 430. In addition, insulating film openings 116a, 117a, and 118a are provided, and the corresponding electrodes of the liquid crystal panel driving integrated circuit 430 and the connection electrode pads 116, 117, and 118 are electrically connected through the insulating film openings 116a, 117a, and 118a. Do it.

すなわち、図4に示す第1基板411上に前記Y側外周辺311に対する平行辺の長さがL1の第1接続電極パッド116、平行辺の長さがL2の第2接続電極パッド117、平行辺の長さがL3の第3接続電極パッド118、および第1配線電極113、第2配線電極114、第3配線電極115を配設し、前記第1接続電極パッド116、第2接続電極パッド117、第3接続電極パッド118の各絶縁膜開口116a、117a、118aを除く周辺部と前記第1配線電極113、第2配線電極114、第3配線電極115の全面を絶縁膜106で覆ってあるのである。   That is, on the first substrate 411 shown in FIG. 4, the first connection electrode pad 116 having a parallel side length L1 with respect to the Y-side outer periphery 311 and the second connection electrode pad 117 having a parallel side length L2 is parallel. A third connection electrode pad 118 having a side length L3, a first wiring electrode 113, a second wiring electrode 114, and a third wiring electrode 115 are disposed. The first connection electrode pad 116 and the second connection electrode pad 117, the peripheral portions of the third connection electrode pads 118 other than the insulating film openings 116a, 117a, and 118a and the entire surfaces of the first wiring electrode 113, the second wiring electrode 114, and the third wiring electrode 115 are covered with the insulating film 106. There is.

一般的に接続電極パッドは極力幅広が望ましいことは前述の通りである。このために前記接続パッドの側辺を通す配線電極同士の間隔、および前記接続パッドと前記配線電極の間隔を狭くする必要があるが、前述のごとく本発明は各電極間の間隔を狭めても液晶パネル駆動集積回路の対応する電極と導通接続を行う各接続電極パッドの絶縁膜開口以外のY配線電極領域313とY接続電極パッド領域316上は全て絶縁膜106で覆ってあるため、これらの電極間を狭めても湿度や汚れによる電極間の絶縁不良は発生しない。   As described above, it is generally desirable that the connection electrode pad be as wide as possible. For this reason, it is necessary to reduce the distance between the wiring electrodes passing through the side of the connection pad and the distance between the connection pad and the wiring electrode. However, as described above, the present invention can reduce the distance between the electrodes. Since the Y wiring electrode region 313 and the Y connection electrode pad region 316 are all covered with the insulating film 106 except for the insulating film opening of each connection electrode pad that conducts conductive connection with the corresponding electrode of the liquid crystal panel driving integrated circuit. Even if the distance between the electrodes is narrowed, insulation failure between the electrodes due to humidity and dirt does not occur.

なお、上記表示領域の電極材料には透明性に優れた酸化インジウムスズ(ITO:Indium Tin Oxide)膜など、配線電極や接続電極パッドには主として金属系のアルミニウム膜など、絶縁膜にはシリコンの酸化あるいは窒化膜等で生成する。   The electrode material for the display area is an indium tin oxide (ITO) film having excellent transparency, such as a metal-based aluminum film for wiring electrodes and connection electrode pads, and silicon for the insulating film. It is formed by oxidation or nitride film.

次に配線電極と接続電極パッドの詳細構造を図2にもとづいて詳述する。図2は本発明の配線電極と接続電極パッド構造の詳細平面図であって、隣接する3個の表示電極Y1、Y2、Y3に関わる1組の配線構造について説明する。   Next, the detailed structure of the wiring electrode and the connection electrode pad will be described in detail with reference to FIG. FIG. 2 is a detailed plan view of the wiring electrode and connection electrode pad structure of the present invention, and a set of wiring structures related to three adjacent display electrodes Y1, Y2, and Y3 will be described.

図2において209は配線電極抵抗調整領域であり、前記配線電極の一部に設けてある。前記配線電極抵抗調整領域において、113aは第1配線電極113の配線電極抵抗調整部、114aは第2配線電極114の配線電極抵抗調整部であり、本来の第1配線電極113、第2配線電極114の配線経路の一部であって電極幅が狭小となっている箇所である。   In FIG. 2, reference numeral 209 denotes a wiring electrode resistance adjustment region, which is provided in a part of the wiring electrode. In the wiring electrode resistance adjustment region, 113a is a wiring electrode resistance adjusting unit of the first wiring electrode 113, 114a is a wiring electrode resistance adjusting unit of the second wiring electrode 114, and the original first wiring electrode 113 and second wiring electrode. This is a portion of the wiring path 114 where the electrode width is narrow.

前記第1配線電極113の配線電極抵抗調整部113aの電極幅が狭小箇所の長さに比べて前記第2配線電極114の配線電極抵抗調整部114aの電極幅の狭小箇所の長さは短く、第3配線電極115には電極幅が狭小な配線電極抵抗調整部は設けていない。   The length of the narrow portion of the electrode width of the wiring electrode resistance adjusting portion 114a of the second wiring electrode 114 is shorter than the length of the narrow portion of the electrode width of the wiring electrode resistance adjusting portion 113a of the first wiring electrode 113, The third wiring electrode 115 is not provided with a wiring electrode resistance adjusting portion having a narrow electrode width.

この配線電極抵抗調整領域209を設ける理由は、前記接続電極パッド116、117、118が前記表示領域301のY側外周辺311に対して直交方向に直列配置してあるため、前記配線電極116、117、118の長さは表示領域301から遠いほど長くなり、その配線抵抗が増すことになる。従って、表示領域301から接続電極パッド116、117、118までの配線電極抵抗値に差異が生じ、各接続電極パッドから見た液晶示電極の駆動条件が異なることになり、画質低下の要因となるのである。   The reason why the wiring electrode resistance adjustment region 209 is provided is that the connection electrode pads 116, 117, 118 are arranged in series in a direction orthogonal to the Y-side outer periphery 311 of the display region 301. The distances 117 and 118 become longer as the distance from the display area 301 increases, and the wiring resistance increases. Accordingly, a difference occurs in the wiring electrode resistance values from the display area 301 to the connection electrode pads 116, 117, and 118, and the driving conditions of the liquid crystal display electrodes as viewed from each connection electrode pad are different, which causes a reduction in image quality. It is.

この画質低下を防ぐために本発明の液晶表示パネルは、1組の配線電極の各配線電極113、114、115の経路に配線電極抵抗調整領域209を設けて各配線電極の経路条件を変えることで表示領域301から接続電極パッド116、117、118までの配線電極抵抗値を揃えているのである。   In order to prevent this deterioration in image quality, the liquid crystal display panel of the present invention provides a wiring electrode resistance adjustment region 209 in the path of each wiring electrode 113, 114, 115 of a set of wiring electrodes, thereby changing the path condition of each wiring electrode. The wiring electrode resistance values from the display area 301 to the connection electrode pads 116, 117, and 118 are made uniform.

なお、第3接続電極パッド118には配線電極抵抗調整部を設けていないが、この第3接続電極パッド118は表示領域301から最も遠い位置にあり、配線電極長が他の配線電極に対して最も長く、配線電極抵抗値が高いので、この第3配線電極115の配線電極抵抗を基準に他の第1配線電極113および第2配線電極114の配線電極抵抗調整部113a、114aの配線の経路、すなわち配線電極幅あるいは長さをそれぞれ変えることで表示領域301から接続電極パッド116、117、118までの各配線電極抵抗値を揃えるのである。
なお、第3接続電極パッド118には配線電極抵抗調整部を設けていないが、この第3接続電極パッド118は表示領域301から最も遠い位置にあり、配線電極長が他の配線電極に対して最も長く、配線電極抵抗値が高いので、
第3配線電極115の配線電極抵抗を基準に他の第1配線電極113および第2配線電極114の配線経路条件を変えて各配線電極抵抗値を揃えるのである。すなわち、配線電極抵抗調整部113a、114aの配線電極幅をそれぞれ変えることで表示領域301から各接続電極パッド116、117、118までの各配線電極抵抗値を揃えるのである。
The third connection electrode pad 118 is not provided with a wiring electrode resistance adjusting portion, but the third connection electrode pad 118 is farthest from the display area 301 and the wiring electrode length is longer than that of the other wiring electrodes. Since the wiring electrode resistance value is the longest and the wiring electrode resistance value is high, the wiring path of the wiring electrode resistance adjusting portions 113a and 114a of the other first wiring electrode 113 and the second wiring electrode 114 on the basis of the wiring electrode resistance of the third wiring electrode 115 That is, the wiring electrode resistance values from the display area 301 to the connection electrode pads 116, 117, and 118 are made uniform by changing the width or length of the wiring electrode.
The third connection electrode pad 118 is not provided with a wiring electrode resistance adjusting portion, but the third connection electrode pad 118 is farthest from the display area 301 and the wiring electrode length is longer than that of the other wiring electrodes. Because it is the longest and the wiring electrode resistance value is high,
The wiring electrode resistance values are made uniform by changing the wiring path conditions of the other first wiring electrode 113 and the second wiring electrode 114 based on the wiring electrode resistance of the third wiring electrode 115. That is, the wiring electrode resistance values from the display region 301 to the connection electrode pads 116, 117, and 118 are made uniform by changing the wiring electrode widths of the wiring electrode resistance adjusting sections 113a and 114a.

以上、本発明の電極構造はカラー液晶表示パネルの隣接した3原色の表示電極Y1、Y2、Y3を1組とすることで、液晶表示パネル全体の接続電極パッド構成を各カラー画素同士が同一条件で配置される構造となる。   As described above, in the electrode structure of the present invention, the display electrodes Y1, Y2, and Y3 of the three primary colors adjacent to each other in the color liquid crystal display panel are set as one set so that the connection electrode pad configuration of the entire liquid crystal display panel is the same for each color pixel. It becomes the structure arranged by.

例えば、1組の表示電極に対して、表示電極Y1の列のY接続電極パッド116には緑(G)色の信号を入力し、表示電極Y2の列のY接続電極パッド117には赤(R)色の信号を入力し、表示電極Y3の列のY接続電極パッド118には青(B)色の信号を入力する。このような構成とすれば、各カラー画素の駆動条件を同一にできるとともに、液晶
パネル駆動回路側の接続電極パッドに出力する信号も、接続電極パッド位置ごとに同一パターンの繰り返しとなるため液晶表示パネル駆動集積回路の設計も容易になる。
For example, for a set of display electrodes, a green (G) signal is input to the Y connection electrode pad 116 in the column of the display electrode Y1, and red (to the Y connection electrode pad 117 in the column of the display electrode Y2). R) color signals are input, and blue (B) color signals are input to the Y connection electrode pads 118 in the column of the display electrodes Y3. With such a configuration, the driving conditions of each color pixel can be made the same, and the signal output to the connection electrode pad on the liquid crystal panel drive circuit side also repeats the same pattern at each connection electrode pad position, so that the liquid crystal display The panel drive integrated circuit can be easily designed.

また、本発明の液晶表示パネルはこれら隣接するカラー3原色対応の表示電極と配線電極と接続電極パッドを3個ずつ1組とする配線ブロックを形成し、前記配線ブロックを表示領域の外周辺に対して水平方向に連ねた構造としているが、さらに、この隣接する画素に対応した電極の数を3の倍数(3×N)を1組とすることで、接続電極パッドの平行方向の幅はさらに広くすることができる。   In the liquid crystal display panel of the present invention, the adjacent display electrodes corresponding to the three primary colors, a wiring block having three wiring electrodes and three connection electrode pads are formed, and the wiring block is formed on the outer periphery of the display area. However, the width of the connection electrode pad in the parallel direction is further increased by setting the number of electrodes corresponding to the adjacent pixels to a multiple of 3 (3 × N) as one set. It can be made even wider.

以上は本発明の液晶表示パネルのY方向に関する電極構造の詳細であるが、X方向に関する電極構造もY方向に関する電極構造と同じ構造としてある。   The above is the details of the electrode structure in the Y direction of the liquid crystal display panel of the present invention, but the electrode structure in the X direction is the same as the electrode structure in the Y direction.

また、上記各実施例では液晶表示パネル駆動回路をCOG実装にもとづいて説明したが、TAB実装にも適用でき、また、表示領域はアクティブ型液晶表示パネルやパッシブ型液晶表示パネルの双方に適用できることは当然である。   In each of the above embodiments, the liquid crystal display panel driving circuit has been described based on COG mounting. However, it can also be applied to TAB mounting, and the display area can be applied to both active liquid crystal display panels and passive liquid crystal display panels. Is natural.

すなわち、本発明の液晶表示パネルは隣接するカラー対応の3原色の表示電極または対向電極を1組とする前記1組の表示電極または対向電極幅内に、前記1組の表示電極または対向電極に対応する複数の接続電極パッドを、表示領域外周辺に対して直交方向に直列配置し、前記表示領域から遠い接続電極パッドに接続する配線電極は前記表示領域から近い接続電極パッドの側辺を通す接続電極パッド部を同一パターンの繰り返し配置という効率的配置構造であることから、高密度化されたカラー液晶表示パネルの微細画素に対して最適な接続電極パッドと言える。   That is, the liquid crystal display panel according to the present invention includes the one set of display electrodes or counter electrodes within the width of the one set of display electrodes or counter electrodes in which the three primary color display electrodes or counter electrodes corresponding to adjacent colors are set as one set. A plurality of corresponding connection electrode pads are arranged in series in a direction orthogonal to the periphery outside the display area, and wiring electrodes connected to connection electrode pads far from the display area pass through the side of the connection electrode pad close to the display area. Since the connection electrode pad portion has an efficient arrangement structure in which the same pattern is repeatedly arranged, it can be said that the connection electrode pad is optimum for the fine pixels of the high-density color liquid crystal display panel.

本発明の実施例であり、液晶表示パネルの詳細配線図である。It is an Example of this invention and is a detailed wiring diagram of a liquid crystal display panel. 図1に示す本発明の配線電極と接続電極パッド構造の詳細平面図である。It is a detailed top view of the wiring electrode and connection electrode pad structure of this invention shown in FIG. 図3は従来の液晶表示パネルの平面図である。FIG. 3 is a plan view of a conventional liquid crystal display panel. 従来の液晶表示パネルの断面図である。It is sectional drawing of the conventional liquid crystal display panel. 従来技術の液晶表示パネルの配線図である。It is a wiring diagram of the liquid crystal display panel of a prior art.

符号の説明Explanation of symbols

106 絶縁膜
113、513 第1配線電極
114、514 第2配線電極
115、515 第3配線電極
113a 配線電極抵抗調整部
114a 配線電極抵抗調整部
116、516 第1接続電極パッド
117、517 第2接続電極パッド
118、518 第3接続電極パッド
209 配線電極抵抗調整領域
300 液晶表示パネル
301 表示領域
313 Y配線電極領域
316 Y接続電極パッド領域
323 X配線電極領域
326 X接続電極パッド領域
401 液晶層
411 第1基板
412 表示電極群
421 第2基板
422 対向電極群
430 液晶表示パネル駆動集積回路
X1、X2、X3 対向電極
Y1、Y2、Y3 表示電極

106 Insulating film 113, 513 First wiring electrode 114, 514 Second wiring electrode 115, 515 Third wiring electrode 113a Wiring electrode resistance adjustment unit 114a Wiring electrode resistance adjustment unit 116, 516 First connection electrode pads 117, 517 Second connection Electrode pads 118, 518 Third connection electrode pad 209 Wiring electrode resistance adjustment region 300 Liquid crystal display panel 301 Display region 313 Y wiring electrode region 316 Y connection electrode pad region 323 X wiring electrode region 326 X connection electrode pad region 401 Liquid crystal layer 411 First 1 substrate 412 display electrode group 421 second substrate 422 counter electrode group 430 liquid crystal display panel drive integrated circuit X1, X2, X3 counter electrode Y1, Y2, Y3 display electrode

Claims (5)

第1の基板と第2の基板の間隙に液晶層を有し、前記第1の基板上に設ける表示電極と、第2の基板上に設ける対抗電極との重なり部を赤色、緑色、青色の各カラー画素部として表示領域を形成し、該表示領域は複数の行と列に画素部を設けるマトリックス型を有し、前記表示電極は配線電極を介して接続電極パッドに接続する液晶表示パネルにおいて、前記画素部の隣接する赤色、緑色、青色の各カラー画素部の表示電極を1組とし、該1組の表示電極に対応する複数の接続電極パッドを前記表示領域の外周辺に対して直交方向に直列配置したことを特徴とする液晶表示パネル。   A liquid crystal layer is provided in the gap between the first substrate and the second substrate, and an overlapping portion between the display electrode provided on the first substrate and the counter electrode provided on the second substrate is formed of red, green, and blue In a liquid crystal display panel in which a display region is formed as each color pixel portion, the display region has a matrix type in which pixel portions are provided in a plurality of rows and columns, and the display electrode is connected to a connection electrode pad through a wiring electrode The display electrodes of each of the color pixel portions adjacent to the pixel portion are a set, and a plurality of connection electrode pads corresponding to the set of display electrodes are orthogonal to the outer periphery of the display region. A liquid crystal display panel characterized by being arranged in series in a direction. 前記表示領域の外周辺に対して直交方向に直列配置された接続電極パッドは、前記表示領域に近い方から遠い方に向って緑色、赤色、青色の順に配設されている請求項1記載の液晶表示パネル。   The connection electrode pads arranged in series in an orthogonal direction with respect to the outer periphery of the display area are arranged in the order of green, red, and blue from the side closer to the display area toward the far side. LCD display panel. 前記1組の表示電極と接続電極パッドとを接続する1組の配線電極には各配線電極の配線電極抵抗を個別に調整するための配線電極抵抗調整手段が設けられている請求項1乃至2項のいずれか1項に記載の液晶表示パネル。   The wiring electrode resistance adjusting means for individually adjusting the wiring electrode resistance of each wiring electrode is provided in the one set of wiring electrodes connecting the one set of display electrodes and the connection electrode pads. The liquid crystal display panel according to any one of the items. 前記配線電極抵抗調整手段が前記配線電極の電極幅を調整する手段である請求項3記載の液晶表示パネル。   4. The liquid crystal display panel according to claim 3, wherein the wiring electrode resistance adjusting means is means for adjusting an electrode width of the wiring electrode. 前記直列配置された接続電極パッドの数が3の倍数である請求項1乃至4項のいずれか1項に記載の液晶表示パネル。

The liquid crystal display panel according to claim 1, wherein the number of connection electrode pads arranged in series is a multiple of three.

JP2005039976A 2005-02-17 2005-02-17 Panel for liquid crystal display Pending JP2006227230A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009192685A (en) * 2008-02-13 2009-08-27 Seiko Instruments Inc Color filter substrate, liquid crystal display device and display device
JP2009258689A (en) * 2008-03-24 2009-11-05 Citizen Holdings Co Ltd Optical modulation device
WO2012157720A1 (en) * 2011-05-18 2012-11-22 シャープ株式会社 Liquid crystal panel and liquid crystal display device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009192685A (en) * 2008-02-13 2009-08-27 Seiko Instruments Inc Color filter substrate, liquid crystal display device and display device
JP2009258689A (en) * 2008-03-24 2009-11-05 Citizen Holdings Co Ltd Optical modulation device
WO2012157720A1 (en) * 2011-05-18 2012-11-22 シャープ株式会社 Liquid crystal panel and liquid crystal display device

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