JP2004212423A - Liquid crystal display element - Google Patents

Liquid crystal display element Download PDF

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Publication number
JP2004212423A
JP2004212423A JP2002378584A JP2002378584A JP2004212423A JP 2004212423 A JP2004212423 A JP 2004212423A JP 2002378584 A JP2002378584 A JP 2002378584A JP 2002378584 A JP2002378584 A JP 2002378584A JP 2004212423 A JP2004212423 A JP 2004212423A
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Japan
Prior art keywords
electrodes
scanning
electrode
substrate
cross
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JP2002378584A
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Japanese (ja)
Inventor
Hiroyuki Fujii
浩之 藤井
Youshibi Saito
洋志美 斉藤
Shuichi Ishido
修一 石堂
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Casio Computer Co Ltd
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Casio Computer Co Ltd
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Priority to JP2002378584A priority Critical patent/JP2004212423A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To narrow a picture frame region on a periphery of a display region of a liquid crystal display element wherein scanning electrodes and signal electrodes are connected to one driving circuit. <P>SOLUTION: On a signal electrode substrate 2 with a terminal aligning part, a plurality of signal electrode terminal wiring lines 6a directed from a plurality of the signal electrodes 6 of the substrate 2 to the terminal aligning part, a plurality of crossed part electrodes 9 formed on the lateral side of electrode terminals of the scanning electrodes 5 in the picture frame region B between a display region A and a seal part of a sealant 3 respectively corresponding to a plurality of the scanning electrodes 5 on a scanning electrode substrate 1 and a plurality of scanning electrode terminal wiring lines 10 directed from the crossed part electrodes 9 through a region between the formed part thereof and an outer periphery of the seal part to the terminal aligning part are disposed. A plurality of protruding parts 13 formed respectively corresponding to a plurality of the crossed part electrodes 9 with a height corresponding to a gap between the substrates are disposed on the scanning electrode substrate 1. Terminals of a plurality of the scanning electrodes 5 are formed so as to be extended on a plurality of the protruding parts 13. The extended parts of the scanning electrodes 5 on the protruding parts 13 are contacted and connected with a plurality of the crossed part electrodes 9. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
この発明は単純マトリックス型の液晶表示素子に関する。
【0002】
【従来の技術】
単純マトリックス型の液晶表示素子は、行方向に沿う複数の走査電極が形成された第1の基板と、列方向の一端に前記第1の基板の外方に張出す端子配列部を有し、列方向に沿う複数の信号電極及びこれらの信号電極からそれぞれ前記端子配列部に導出された複数の信号電極端子配線が形成され、前記第1の基板と対向配置された第2の基板と、前記走査電極と信号電極とが対向する部分により形成される複数の画素がマトリックス状に配列する表示領域を取り囲んで設けられ、前記第1と第2の基板を接合する枠状のシール材と、前記第1と第2の基板間の前記シール材により囲まれた領域に設けられた液晶層とにより構成されている。
【0003】
この単純マトリックス型液晶表示素子には、第2の基板に設けられた複数の走査電極と、第2の基板に設けられた複数の信号電極とをそれぞれ別の駆動回路に接続するようにしたものと、前記複数の走査電極と信号電極とを1つの駆動回路に接続するようにしたものとがある。
【0004】
後者の液晶表示素子は、従来、信号電極が設けられた第2の基板の列方向の一端(信号電極の電極端側の端部)に前記第1の基板の外方に張出す端子配列部を形成し、この基板に、複数の信号電極から前記端子配列部に導出された複数の信号電極端子配線と、シール材によるシール部内に形成された複数のクロス部電極及びこれらのクロス部電極から前記端子配列部に導出された複数の走査電極端子配線とを設け、前記第1の基板に設けられた複数の走査電極に前記複数のクロス部電極にそれぞれ対向する延長部を形成し、これらの走査電極の延長部を前記シール部内において複数の導電性クロス材を介して前記複数のクロス部電極に接続した構成とされている。
【0005】
この液晶表示素子には、前記複数のクロス部電極を走査電極の電極端の側方のシール部内に形成し、前記複数の走査電極端子配線を、前記表示領域と前記シール部との間の額縁領域を通して端子配列部に導出したもの(特許文献1参照)と、前記複数のクロス部電極を端子配列部に沿ったシール部内に形成し、複数の走査電極の延長部を前記額縁領域を通して導いて前記複数のクロス部電極にそれぞれ対向させたもの(特許文献2参照)とがある。
【0006】
【特許文献1】
特開平11−183914号公報
【0007】
【特許文献2】
特開2001−154599号公報
【0008】
【発明が解決しようとする課題】
しかし、上記従来の液晶表示素子は、複数のクロス部電極をシール材によるシール部内に形成し、走査電極端子配線または走査電極の延長部を、表示領域とシール部との間の額縁領域を通して形成したものであるため、前記額縁領域の幅を、前記走査電極端子配線または走査電極の延長部の線数に応じて充分に広くする必要がある。
【0009】
そのため、複数の走査電極と信号電極とを1つの駆動回路に接続するようにした従来の液晶表示素子は、表示領域の周囲の額縁領域が広くなりすぎるという問題をもっている。
【0010】
この発明は、複数の走査電極と信号電極とを1つの駆動回路に接続するようにしたものでありながら、表示領域の周囲の額縁領域を狭くすることができ、しかも第2の基板に設けられた複数のクロス部電極に第1の基板に設けられた複数の走査電極を簡単な構造で接続することができる液晶表示素子を提供することを目的としたものである。
【0011】
【課題を解決するための手段】
この発明の液晶表示素子は、行方向に沿う複数の走査電極が形成された第1の基板と、列方向の一端に前記第1の基板の外方に張出す端子配列部を有し、列方向に沿う複数の信号電極及びこれらの信号電極からそれぞれ前記端子配列部に導出された複数の信号電極端子配線が形成され、前記第1の基板と対向配置された第2の基板と、前記走査電極と信号電極とが対向する部分により形成される複数の画素がマトリックス状に配列する表示領域を取り囲んで設けられ、前記第1と第2の基板を接合する枠状のシール材と、前記第1と第2の基板間の前記シール材により囲まれた領域に設けられた液晶層とを備え、
前記第2の基板に、前記表示領域と前記シール材によるシール部との間の領域内の前記走査電極の電極端の側方に前記複数の走査電極にそれぞれ対応させて形成された複数のクロス部電極及びこれらのクロス部電極からその形成部と前記シール部の外縁との間の領域を通して前記端子配列部に導出された複数の走査電極端子配線とが設けられ、前記複数の走査電極の端部がそれぞれ前記複数のクロス部電極に対向する部分に延長され、前記複数のクロス部電極と前記複数の走査電極の延長部のいずれか一方が、それが形成された基板に前記複数のクロス部電極にそれぞれ対応させて前記第1と第2の基板間の間隔に対応する高さに形成された複数の凸部上に形成され、前記複数の走査電極の延長部が前記複数のクロス部電極にそれぞれ接触接続されていることを特徴とする。
【0012】
この液晶表示素子は、複数の画素がマトリックス状に配列する表示領域とシール材によるシール部との間の領域、つまり前記表示領域の周囲の額縁領域内の前記走査電極の電極端の側方に前記複数の走査電極にそれぞれ対応させて複数のクロス部電極を形成しているため、前記シール部内にクロス部電極を形成した従来の液晶表示素子のように、走査電極端子配線または走査電極の延長部を前記シール部を避けて形成する必要はない。
【0013】
そして、この液晶表示素子では、複数の走査電極端子配線を前記クロス部電極の形成部と前記シール部の外縁との間の領域を通して前記端子配列部に導出しているため、前記シール部内を前記走査電極端子配線の引き回しスペースとして利用することができ、したがって、前記表示領域とシール部との間の額縁領域を狭くすることができる。
【0014】
しかも、この液晶表示素子は、前記第1の基板に形成された複数の走査電極の端部をそれぞれ前記複数のクロス部電極に対向する部分に延長し、前記複数のクロス部電極と前記複数の走査電極の延長部のいずれか一方を、それが形成された基板に前記複数のクロス部電極にそれぞれ対応させて前記第1と第2の基板間の間隔に対応する高さに形成された複数の凸部上に形成し、前記複数の走査電極の延長部を前記複数のクロス部電極にそれぞれ接触接続させているため、前記複数の走査電極を前記複数のクロス部電極に簡単な構造で接続することができる。
【0015】
このように、この発明の液晶表示素子は、端子配列部を有する第2の基板に、この第2の基板に形成された複数の信号電極から前記端子配列部に導出された複数の信号電極端子配線と、複数の画素がマトリックス状に配列する表示領域とシール材によるシール部との間の額縁領域内の前記走査電極の電極端の側方に前記複数の走査電極にそれぞれ対応させて形成された複数のクロス部電極及びこれらのクロス部電極からその形成部と前記シール部の外縁との間の領域を通して前記端子配列部に導出された複数の走査電極端子配線とを設け、前記複数の走査電極の端部をそれぞれ前記複数のクロス部電極に対向する部分に延長し、前記複数のクロス部電極と前記複数の走査電極の延長部のいずれか一方を、それが形成された基板に前記複数のクロス部電極にそれぞれ対応させて前記第1と第2の基板間の間隔に対応する高さに形成された複数の凸部上に形成し、前記複数の走査電極の延長部を前記複数のクロス部電極にそれぞれ接触接続させることにより、複数の走査電極と信号電極とを1つの駆動回路に接続するようにしたものでありながら、表示領域の周囲の額縁領域を狭くすることができ、しかも第2の基板に設けられた複数のクロス部電極に第1の基板に設けられた複数の走査電極を簡単な構造で接続することができるようにしたものである。
【0016】
この発明をカラー画像を表示する液晶表示素子に適用する場合、前記クロス部電極に対応する前記凸部が設けられた基板に、前記表示領域に対応させて複数の色のカラーフィルタを設け、その基板側の複数の電極を前記カラーフィルタの上に形成するとともに、前記凸部を前記複数の色のカラーフィルタを積み重ねたカラーフィルタ積層膜により形成するのが好ましい。
【0017】
また、前記複数の走査電極端子配線は、その全てを前記シール部内を通して端子配列部に導出するのが望ましい。
【0018】
さらに、この液晶表示素子は、前記第2の基板の端子配列部に複数の走査電極と信号電極との間に駆動電圧を印加する駆動回路素子の搭載部を設け、前記複数の信号電極端子配線と走査電極端子配線をそれぞれ前記端子配列部の駆動回路搭載部まで導出した構成とするのが望ましい。
【0019】
【発明の実施の形態】
図1〜図3はこの発明の第1の実施例を示しており、図1は液晶表示素子の斜視図、図2は前記液晶表示素子の第2の基板の一部分の拡大平面図、図3は前記液晶表示素子の一部分の拡大断面図である。
【0020】
この液晶表示素子は単純マトリックス型のものであり、行方向に沿う複数の透明な走査電極5が形成された第1の透明基板(以下、走査電極基板と言う)1と、列方向の一端に前記走査電極基板1の外方に張出す端子配列部2aを有し、列方向に沿う複数の透明な信号電極6及びこれらの信号電極6からそれぞれ前記端子配列部2aに導出された複数の信号電極端子配線6aが形成され、前記走査電極基板1と対向配置された第2の透明基板(以下、信号電極基板と言う)2と、前記走査電極5と信号電極6とが対向する部分により形成される複数の画素がマトリックス状に配列する表示領域Aを取り囲んで設けられ、前記走査電極基板1と信号電極基板2とを接合する枠状のシール材3と、これらの一対の基板1,2間の前記シール材3により囲まれた領域に設けられた液晶層4とを備えている。
【0021】
この液晶表示素子は、複数の色、例えば赤、緑、青の3色のカラーフィルタ7R,7G,7Bを備えたカラー画像表示素子であり、前記赤、緑、青のカラーフィルタ7R,7G,7Bは、前記走査電極基板1の信号電極基板2と対向する内面に、前記複数の画素がマトリックス状に配列する表示領域Aに対応させて、各画素列毎に交互に並べて設けられ、その上に前記複数の走査電極5が形成されている。
【0022】
さらに、前記走査電極基板1の内面には、前記表示領域Aと前記シール材3によるシール部との間の領域、つまり前記表示領域Aの周囲の額縁領域Bの全周に対応させて遮光膜8が設けられており、この遮光膜8は、例えば黒色の顔料を添加した樹脂膜により前記カラーフィルタ7R,7G,7Bと同じ膜厚に形成されている。なお、この実施例では、前記遮光膜8を前記額縁領域Bの外周縁部を除いて形成している。
【0023】
また、前記信号電極基板2の走査電極基板1と対向する内面には、前記表示領域Aと前記シール材3によるシール部との間の額縁領域B内の走査電極5の電極端の側方に前記複数の走査電極5にそれぞれ対応させて形成された複数のクロス部電極9及びこれらのクロス部電極9からそれぞれその形成部と前記シール部の外縁との間の領域を通して前記端子配列部2aに導出された複数の走査電極端子配線10とが設けられている。
【0024】
この実施例では、前記走査電極5の一端側の額縁領域B内に、1つ置きの走査電極(例えば奇数番の走査電極)6にそれぞれ対応する複数のクロス部電極9を、各走査電極5の延長線上に位置させて1列に配列形成し、前記走査電極5の他端側の額縁領域B内に、他の1つ置きの走査電極(例えば偶数番の走査電極)6にそれぞれ対応する複数のクロス部電極9を、各走査電極5の延長線上に位置させて1列に配列形成している。
【0025】
前記複数のクロス部電極9からそれぞれ導出された前記複数の走査電極端子配線10はそれぞれ、その全てが前記クロス部電極9から前記シール部の方向に導かれ、さらに前記シール部内を通して前記シール部の端子配列部2aに沿う辺の外縁から前記端子配列部2aに導出されている。
【0026】
また、この液晶表示素子は、図1に示したように、前記端子配列部2aに複数の走査電極5と信号電極6との間に駆動電圧を印加する図示しない駆動回路素子(ICチップまたはLSIチップ等)の搭載部11を設けたものであり、前記複数の信号電極端子配線6aと走査電極端子配線10はそれぞれ前記端子配列部2aの駆動回路搭載部11まで導出され、、その導出端に、前記駆動回路素子の複数の出力端子にそれぞれ接続される接続端子(図示せず)が形成されている。
【0027】
さらに、前記端子配列部2aには、図示しない外部回路からの制御信号を前記駆動回路素子に供給するための複数の入力配線12が前記端子配列部2aの外側縁から前記駆動回路搭載部11に導いて設けられており、これらの入力配線12の駆動回路搭載部11側の端部に、前記駆動回路素子の複数の入力端子にそれぞれ接続される接続端子(図示せず)が形成されている。
【0028】
一方、前記走査電極基板1の内面には、前記複数のクロス部電極9にそれぞれ対応させて一対の基板1,2の内面間の間隔(液晶層厚)に対応する高さに形成された複数の凸部13が設けられている。
【0029】
この複数の凸部13は、前記赤、緑、青の3色のカラーフィルタ7R,7G,7Bを積み重ねたカラーフィルタ積層膜により形成されている。この凸部13は、走査電極5と信号電極6とが対向する1つの画素の面積と同程度の平面積を有する角柱状に形成されており、前記クロス部電極9は、一対の基板1,2を前記シール材3を介して接合する際の両基板1,2の位置合わせ精度の誤差を考慮して、前記凸部13の平面積よりも若干大きい面積に形成されている。
【0030】
そして、前記走査電極基板1の内面(表示領域Aに対応するカラーフィルタ7R,7G,7Bの上)に設けられた前記複数の走査電極5の端部はそれぞれ、前記額縁領域Bに設けられた遮光膜8上を経て前記カラーフィルタ積層膜からなる凸部13の上に延長されている。
【0031】
なお、図では省略しているが、前記一対の基板1,2の内面の前記表示領域Aには前記電極6,5を覆って、前記液晶層4の液晶分子を予め定められた配向状態に配向させるための配向膜が設けられている。
【0032】
また、前記枠状のシール材3は、エポキシ系樹脂等の熱硬化性樹脂により形成されており、一対の基板1,2は、そのいずれか第2の基板の内面に前記シール材3を印刷し、第1の基板の内面上にガラスビーズ等からなるギャップ材14を散布して重ね合わせ、加圧により両基板1,2の間隔を前記ギャップ材14により規定される値に調整した後に前記シール材3を加熱により硬化させることにより、前記シール材3を介して接合されている。
【0033】
そして、前記複数の走査電極5の前記凸部(カラーフィルタ積層膜)13上に形成された延長部5aは、前記一対の基板1,2の間隔を前記ギャップ材14により規定される値に調整することによりクロス部電極9に接触され、前記シール材3の硬化時の収縮により前記クロス部電極9にさらに強く接触されて、前記クロス部電極9に良好な導通性で接続されている。
【0034】
なお、前記シール材3には、前記端子配列部2aとは反対側の辺を部分的に欠落させて形成された液晶注入口(図示せず)が設けられており、前記液晶層4は、前記一対の基板1,2を前記シール材3を介して接合した後に、真空注入法により前記液晶注入口から液晶を注入することにより形成され、前記液晶注入口は液晶の注入後に封止されている。
【0035】
この液晶表示素子は、複数の画素がマトリックス状に配列する表示領域Aとシール材3によるシール部との間の額縁領域B内の走査電極5の電極端の側方に複数の走査電極5にそれぞれ対応させて複数のクロス部電極9を形成しているため、前記シール部内にクロス部電極を形成した従来の液晶表示素子のように、走査電極端子配線または走査電極の延長部をシール部を避けて形成する必要はない。
【0036】
すなわち、従来の液晶表示素子は、シール部内に複数のクロス部電極を形成し、前記シール部内において前記複数のクロス部電極と複数の走査電極の延長部とをそれぞれクロス材により接続しているため、クロス部電極を走査電極の電極端の側方のシール部内に形成し、前記クロス部電極から端子配列部に走査電極端子配線を導出している液晶表示素子では、前記走査電極端子配線を、その配線が導出されたクロス部電極以外のクロス部電極と短絡させないように前記シール部を避けて額縁領域内を通して形成しなければならず、また、複数のクロス部電極を端子配列部に沿ったシール部内に形成し、走査電極の延長部を前記クロス部電極まで導いている液晶表示素子では、走査電極の延長部を、それと接続されるクロス材以外のクロス材と短絡させないように前記シール部を避けて額縁領域内を通して形成しなければならない。
【0037】
それに対し、上記実施例の液晶表示素子は、クロス部電極9を走査電極5の電極端の側方に形成したものであるが、前記クロス部電極9を表示領域Aとシール材3によるシール部との間の額縁領域B内に形成しているため、前記シール部内には走査電極端子配線10と短絡する導電体は無く、したがって、前記クロス部電極9から端子配列部2aに導出する走査電極端子配線10を前記シール部を避けて形成する必要はない。
【0038】
そして、この液晶表示素子では、複数の走査電極端子配線10を前記クロス部電極9の形成部と前記シール部の外縁との間の領域を通して前記端子配列部2aに導出しているため、前記シール部内を前記走査電極端子配線10の引き回しスペースとして利用することができ、したがって、複数の走査電極端子配線10を前記シール部内を通して形成し、前記表示領域Aとシール部との間の額縁領域Bを狭くすることができる。
【0039】
この実施例では、複数の走査電極端子配線10の全てを前記シール部内を通して端子配列部2aに導出しているため、前記額縁領域Bをより狭くすることができる。
【0040】
しかも、この液晶表示素子は、前記走査電極基板1の内面に、信号電極基板2の内面に形成された複数のクロス部電極9にそれぞれ対応させて、一対の基板1,2の内面間の間隔に対応する高さに形成された複数の凸部13を設け、前記走査電極基板1に形成された複数の走査電極5の端部をそれぞれ前記複数の凸部13上に延長させて形成することにより、これらの走査電極5の前記凸部13上の延長部5aを前記複数のクロス部電極9にそれぞれ接触接続させているため、前記複数の走査電極5を前記複数のクロス部電極9に簡単な構造で接続することができる。
【0041】
このように、この液晶表示素子は、複数の走査電極5と信号電極6とを1つの駆動回路に接続するようにしたものでありながら、表示領域Aの周囲の額縁領域Bを狭くすることができ、しかも信号電極基板2に設けられた複数のクロス部電極9に走査電極基板1に設けられた複数の走査電極5を簡単な構造で接続することができる。
【0042】
また、上記実施例の液晶表示素子は、前記走査電極基板1の内面に、表示領域Aに対応させて複数の色のカラーフィルタ7R.7G,7Bを設け、複数の走査電極5を前記カラーフィルタ7R.7G,7Bの上に形成するとともに、複数のクロス部電極9にそれぞれ対応する複数の凸部13を、前記複数の色のカラーフィルタ7R.7G,7Bを積み重ねたカラーフィルタ積層膜により形成しているため、前記走査電極基板1の表示領域Aに複数の色のカラーフィルタ7R.7G,7Bを順次形成する工程を利用して前記凸部13を形成することができ、したがって液晶表示素子を少ない工程数で低コストに製造することができる。
【0043】
さらに上記実施例の液晶表示素子は、信号電極基板2の端子配列部2aに複数の走査電極5と信号電極6との間に駆動電圧を印加する駆動回路素子の搭載部11を設け、複数の信号電極端子配線6aと走査電極端子配線10をそれぞれ前記端子配列部2aの駆動回路搭載部11まで導出するとともに、前記端子配列部2aに外部回路からの制御信号を前記駆動回路素子に供給するための複数の入力配線12を前記端子配列部2aの外側縁から前記駆動回路搭載部11に導いて設けているため、前記駆動回路素子を、その複数の出力端子を前記複数の信号電極端子配線6a及び走査電極端子配線10に接続し、入力端子を前記複数の入力配線12に接続して前記駆動回路搭載部11に搭載することにより、液晶表示素子とその駆動回路とからなる液晶表示装置を構成することができる。
【0044】
なお、上記実施例では、表示領域Aに対応する複数の色のカラーフィルタ7R,7G,7Bと、信号電極基板2の複数のクロス部電極9にそれぞれ対応する複数の凸部13とを走査電極基板1に設けているが、前記カラーフィルタ7R,7G,7Bと、カラーフィルタ積層膜からなる前記複数の凸部13とを信号電極基板2に設け、前記複数のクロス部電極9をそれぞれ前記複数の凸部13上に形成し、複数の走査電極5の延長部5aを前記走査電極基板1の基板面に形成して、これらの走査電極5の延長部5aを前記複数のクロス部電極9にそれぞれ接触接続させてもよい。
【0045】
また、上記実施例の液晶表示素子は、一対の基板1,2の間隔をガラスビーズ等からなるギャップ材14により規定したものであるが、前記一対の基板1,2の間隔は、前記走査電極基板1の内面に複数の柱状スペーサを設けて規定してもよく、その場合は、複数のクロス部電極9にそれぞれ対応する複数の凸部を前記柱状スペーサと同じ材料により形成してもよい。
【0046】
図4はこの発明の第2の実施例を示す液晶表示素子の一部分の断面図であり、この実施例の液晶表示素子は、例えば走査電極基板1の内面の表示領域Aに、一対の基板1,2の間隔を規定するための複数の柱状スペーサ15を感光性樹脂により適当ピッチで設けるとともに、この走査電極基板1の内面の額縁領域Bに、信号電極基板2に設けられた複数のクロス部電極9にそれぞれ対応させて、前記柱状スペーサ15と同じ感光性樹脂15aにより形成された複数の凸部16を設け、その上に複数の走査電極5の延長部5aを形成したものである。
【0047】
なお、この実施例では、前記複数の凸部16を走査電極基板1に設けているが、前記複数の凸部16を信号電極基板2に設け、これらの凸部16の上にそれぞれクロス部電極9を形成してもよい。
【0048】
また、上記実施例では、複数のクロス部電極9を、走査電極5の一端側の額縁領域B内と他端側の額縁領域B内とに配分して配列形成しているが、全てのクロス部電極9を前記走査電極5の一端側と他端側のいずれか一方の額縁領域B内に配列形成し、全ての走査電極端子配線10を、前記クロス部電極9の形成部とシール部の外縁との間の領域を通して端子配列部2aに導出してもよい。
【0049】
なお、上記実施例のように複数のクロス部電極9を走査電極5の一端側の額縁領域B内と他端側の額縁領域B内とに配分して配列形成する場合も、全てのクロス部電極9を前記走査電極5の一端側と他端側のいずれか一方の額縁領域B内に配列形成する場合も、前記クロス部電極9は、1列に限らず、隣り合うクロス部電極9同士を行方向(走査電極5の長さ方向)に画素ピッチと同程度ずらして2〜4列程度以下の列数で複数列に配列形成してもよい。
【0050】
さらに、上記実施例では、前記複数のクロス部電極9からそれぞれ導出された走査電極端子配線10の全てをシール部内を通して端子配列部2aに導出しているが、走査電極端子配線10の数(走査電極数)が多い場合は、そのうちの一部の走査電極端子配線10を前記シール部内を通して端子配列部2aに導出し、他の走査電極端子配線10を前記クロス部電極9の形成部と前記シール部との間の領域を通して端子配列部2aに導出してもよい。
【0051】
【発明の効果】
この発明の液晶表示素子は、端子配列部を有する第2の基板に、この第2の基板に形成された複数の信号電極から前記端子配列部に導出された複数の信号電極端子配線と、複数の画素がマトリックス状に配列する表示領域とシール材によるシール部との間の額縁領域内の前記走査電極の電極端の側方に前記複数の走査電極にそれぞれ対応させて形成された複数のクロス部電極及びこれらのクロス部電極からその形成部と前記シール部の外縁との間の領域を通して前記端子配列部に導出された複数の走査電極端子配線とを設け、前記複数の走査電極の端部をそれぞれ前記複数のクロス部電極に対向する部分に延長し、前記複数のクロス部電極と前記複数の走査電極の延長部のいずれか一方を、それが形成された基板に前記複数のクロス部電極にそれぞれ対応させて前記第1と第2の基板間の間隔に対応する高さに形成された複数の凸部上に形成し、前記複数の走査電極の延長部を前記複数のクロス部電極にそれぞれ接触接続させたものであるため、複数の走査電極と信号電極とを1つの駆動回路に接続するようにしたものでありながら、表示領域の周囲の額縁領域を狭くすることができ、しかも第2の基板に設けられた複数のクロス部電極に第1の基板に設けられた複数の走査電極を簡単な構造で接続することができる。
【0052】
この発明をカラー画像を表示する液晶表示素子に適用する場合、前記クロス部電極に対応する前記凸部が設けられた基板に、前記表示領域に対応させて複数の色のカラーフィルタを設け、その基板側の複数の電極を前記カラーフィルタの上に形成するとともに、前記凸部を前記複数の色のカラーフィルタを積み重ねたカラーフィルタ積層膜により形成するのが好ましく、このようにすることにより、前記第1の基板の表示領域に前記複数の色のカラーフィルタを順次形成する工程を利用して前記凸部を形成し、液晶表示素子を少ない工程数で低コストに製造することができる。
【0053】
また、前記複数の走査電極端子配線は、その全てを前記シール部内を通して端子配列部に導出するのが望ましく、このようにすることにより、前記額縁領域をより狭くすることができる。
【0054】
さらに、この液晶表示素子は、前記第2の基板の端子配列部に複数の走査電極と信号電極との間に駆動電圧を印加する駆動回路素子の搭載部を設け、前記複数の信号電極端子配線と走査電極端子配線をそれぞれ前記端子配列部の駆動回路搭載部まで導出した構成とするのが望ましく、このようにすることにより、前記駆動回路素子を、その複数の端子を前記複数の信号電極端子配線及び走査電極端子配線に接続して前記駆動回路搭載部に搭載し、液晶表示素子とその駆動回路とからなる液晶表示装置を構成することができる。
【図面の簡単な説明】
【図1】この発明の第1の実施例を示す液晶表示素子の斜視図。
【図2】前記液晶表示素子の第2の基板の一部分の拡大平面図。
【図3】前記液晶表示素子の一部分の拡大断面図。
【図4】この発明の第2の実施例を示す液晶表示素子の一部分の断面図。
【符号の説明】
1,2…基板、2a端子配列部、3…シール材、4…液晶層、5…走査電極、5a…延長部、6…信号電極、6a…信号電極端子配線、7R,7G,7B…カラーフィルタ、8…遮光膜、9…クロス部電極、10…走査電極端子配線、11…駆動回路搭載部、12…入力配線、13,16…凸部、A…表示領域、B…額縁領域。
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a simple matrix type liquid crystal display device.
[0002]
[Prior art]
The simple matrix type liquid crystal display element has a first substrate on which a plurality of scanning electrodes are formed along a row direction, and a terminal array portion extending at one end in a column direction to the outside of the first substrate, A plurality of signal electrodes extending in the column direction and a plurality of signal electrode terminal wirings respectively derived from the signal electrodes to the terminal array portion, and a second substrate disposed opposite to the first substrate; A plurality of pixels formed by portions where the scanning electrodes and the signal electrodes face each other are provided so as to surround a display area in which the pixels are arranged in a matrix, and a frame-shaped sealing material that joins the first and second substrates; A liquid crystal layer provided between the first and second substrates in a region surrounded by the sealant.
[0003]
In this simple matrix type liquid crystal display device, a plurality of scanning electrodes provided on a second substrate and a plurality of signal electrodes provided on a second substrate are respectively connected to different driving circuits. And those in which the plurality of scanning electrodes and signal electrodes are connected to one driving circuit.
[0004]
Conventionally, the latter liquid crystal display element has a terminal array portion that extends outward from the first substrate at one end in the column direction of the second substrate provided with the signal electrode (the end on the electrode end side of the signal electrode). Formed on the substrate, a plurality of signal electrode terminal wirings derived from the plurality of signal electrodes to the terminal arrangement portion, a plurality of cross portion electrodes formed in a seal portion formed by a sealing material, and a plurality of cross portion electrodes. A plurality of scanning electrode terminal wirings led out to the terminal array portion; and a plurality of scanning electrodes provided on the first substrate are formed with extension portions respectively facing the plurality of cross portion electrodes. An extended portion of the scanning electrode is connected to the plurality of cross section electrodes via a plurality of conductive cloth materials in the seal section.
[0005]
In this liquid crystal display element, the plurality of cross portion electrodes are formed in a seal portion on the side of the electrode end of the scan electrode, and the plurality of scan electrode terminal wires are formed in a frame between the display region and the seal portion. And a plurality of cross-section electrodes formed in a seal portion along the terminal arrangement section, and extending portions of the plurality of scanning electrodes are guided through the frame area. There is one in which the plurality of cross-section electrodes are opposed to each other (see Patent Document 2).
[0006]
[Patent Document 1]
JP-A-11-183914
[0007]
[Patent Document 2]
JP-A-2001-154599
[0008]
[Problems to be solved by the invention]
However, in the above-mentioned conventional liquid crystal display element, a plurality of cross portion electrodes are formed in a seal portion made of a seal material, and an extended portion of the scan electrode terminal wiring or the scan electrode is formed through a frame region between the display region and the seal portion. Therefore, it is necessary to make the width of the frame region sufficiently large according to the number of lines of the scanning electrode terminal wiring or the extension of the scanning electrode.
[0009]
Therefore, the conventional liquid crystal display element in which a plurality of scanning electrodes and signal electrodes are connected to one driving circuit has a problem that a frame area around a display area becomes too large.
[0010]
According to the present invention, while a plurality of scanning electrodes and signal electrodes are connected to one driving circuit, a frame area around a display area can be narrowed, and furthermore, provided on a second substrate. It is an object of the present invention to provide a liquid crystal display element in which a plurality of scanning electrodes provided on a first substrate can be connected to the plurality of cross section electrodes with a simple structure.
[0011]
[Means for Solving the Problems]
A liquid crystal display device according to the present invention has a first substrate on which a plurality of scanning electrodes are formed along a row direction, and a terminal arrangement portion extending at one end in a column direction to extend outside the first substrate. A plurality of signal electrodes extending in a direction, and a plurality of signal electrode terminal wirings respectively derived from the signal electrodes to the terminal arrangement portion, formed on the second substrate facing the first substrate; A plurality of pixels formed by portions where electrodes and signal electrodes face each other are provided so as to surround a display region in which the pixels are arranged in a matrix, and a frame-shaped sealing material joining the first and second substrates; A liquid crystal layer provided in a region surrounded by the sealant between the first and second substrates,
On the second substrate, a plurality of crosses formed in a region between the display region and a seal portion made of the sealant, on a side of an electrode end of the scan electrode, respectively corresponding to the plurality of scan electrodes. And a plurality of scanning electrode terminal wirings led to the terminal arrangement portion through the region between the forming electrode and the outer edge of the seal portion from the cross electrode and the cross electrode, and an end of the plurality of scanning electrodes is provided. Portions are respectively extended to portions opposed to the plurality of cross portion electrodes, and one of the plurality of cross portion electrodes and the extension portion of the plurality of scan electrodes is provided on the substrate on which the plurality of cross portion electrodes are formed. The plurality of cross electrodes are formed on a plurality of protrusions formed at a height corresponding to a distance between the first and second substrates corresponding to the electrodes, respectively, and an extension of the plurality of scan electrodes is formed on the plurality of cross electrodes. Contact each Characterized in that it is.
[0012]
This liquid crystal display element has a region between a display region in which a plurality of pixels are arranged in a matrix and a sealing portion formed of a sealing material, that is, a side of the scanning electrode in a frame region around the display region. Since a plurality of cross-section electrodes are formed corresponding to the plurality of scanning electrodes, respectively, as in a conventional liquid crystal display device in which a cross-section electrode is formed in the seal portion, an extension of the scanning electrode terminal wiring or the scanning electrode is provided. It is not necessary to form the part avoiding the seal part.
[0013]
In this liquid crystal display element, a plurality of scan electrode terminal wirings are led to the terminal array through a region between the cross portion electrode forming portion and the outer edge of the seal portion. It can be used as a wiring space for the scanning electrode terminal wiring, and therefore, the frame area between the display area and the seal portion can be narrowed.
[0014]
In addition, the liquid crystal display element extends end portions of the plurality of scanning electrodes formed on the first substrate to portions facing the plurality of cross portion electrodes, respectively. One of the extended portions of the scanning electrode is formed on the substrate on which the scanning electrode is formed so as to correspond to the plurality of cross-section electrodes, respectively, and is formed at a height corresponding to an interval between the first and second substrates. The plurality of scanning electrodes are formed on the protruding portions, and the extended portions of the plurality of scanning electrodes are contact-connected to the plurality of crossing electrodes, respectively, so that the plurality of scanning electrodes are connected to the plurality of crossing electrodes with a simple structure. can do.
[0015]
As described above, the liquid crystal display element according to the present invention includes, on a second substrate having a terminal arrangement portion, a plurality of signal electrode terminals derived from the plurality of signal electrodes formed on the second substrate to the terminal arrangement portion. Wiring and a plurality of pixels are formed in a frame area between a display area in which a plurality of pixels are arranged in a matrix and a sealing portion made of a sealing material, and formed on the side of the electrode end of the scanning electrode corresponding to each of the plurality of scanning electrodes. A plurality of cross-section electrodes and a plurality of scanning electrode terminal wirings led from the cross-section electrodes to the terminal arrangement section through a region between the formation section and the outer edge of the seal section, and the plurality of scans are provided. An end portion of each electrode is extended to a portion facing the plurality of cross-section electrodes, and one of the plurality of cross-section electrodes and an extension of the plurality of scanning electrodes is formed on the substrate on which the plurality of cross-section electrodes are formed. No A plurality of projections formed at a height corresponding to a distance between the first and second substrates respectively corresponding to the plurality of scanning electrodes, and extending the plurality of scanning electrodes with the plurality of crosses. By making contact connection with each of the external electrodes, the frame area around the display area can be narrowed while connecting a plurality of scanning electrodes and signal electrodes to one drive circuit. A plurality of scanning electrodes provided on the first substrate can be connected to a plurality of crossing electrodes provided on the second substrate with a simple structure.
[0016]
When the present invention is applied to a liquid crystal display element that displays a color image, a substrate provided with the protrusions corresponding to the cross-section electrodes is provided with a plurality of color filters corresponding to the display area, Preferably, a plurality of electrodes on the substrate side are formed on the color filter, and the projections are formed of a color filter laminated film in which the color filters of the plurality of colors are stacked.
[0017]
Further, it is preferable that all of the plurality of scanning electrode terminal wirings be led out to the terminal array part through the inside of the seal part.
[0018]
Further, in the liquid crystal display element, a mounting portion of a driving circuit element for applying a driving voltage between a plurality of scanning electrodes and a signal electrode is provided in a terminal arrangement portion of the second substrate, and the plurality of signal electrode terminal wirings are provided. And the scanning electrode terminal wiring are preferably led out to the drive circuit mounting part of the terminal arrangement part.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
1 to 3 show a first embodiment of the present invention. FIG. 1 is a perspective view of a liquid crystal display device, FIG. 2 is an enlarged plan view of a part of a second substrate of the liquid crystal display device, and FIG. FIG. 2 is an enlarged sectional view of a part of the liquid crystal display element.
[0020]
This liquid crystal display element is a simple matrix type, and has a first transparent substrate (hereinafter, referred to as a scanning electrode substrate) 1 on which a plurality of transparent scanning electrodes 5 are formed along a row direction, and one end in a column direction. A plurality of transparent signal electrodes 6 extending in the column direction and a plurality of signals derived from the signal electrodes 6 to the terminal array 2a; A second transparent substrate (hereinafter, referred to as a signal electrode substrate) 2 on which an electrode terminal wiring 6a is formed and arranged opposite to the scanning electrode substrate 1, and a portion where the scanning electrode 5 and the signal electrode 6 are opposed to each other. And a frame-shaped sealing material 3 for joining the scanning electrode substrate 1 and the signal electrode substrate 2, and a pair of these substrates 1, 2. Between the sealing material 3 And a liquid crystal layer 4 provided in an area surrounded by Ri.
[0021]
This liquid crystal display device is a color image display device having a plurality of color filters, for example, three color filters 7R, 7G, and 7B of red, green, and blue, and the red, green, and blue color filters 7R, 7G, and 7B. 7B is provided on an inner surface of the scanning electrode substrate 1 facing the signal electrode substrate 2 so as to correspond to a display area A in which the plurality of pixels are arranged in a matrix, and is alternately arranged for each pixel column. The plurality of scanning electrodes 5 are formed.
[0022]
Further, a light-shielding film is formed on the inner surface of the scanning electrode substrate 1 so as to correspond to the area between the display area A and the sealing portion formed by the sealing material 3, that is, the entire periphery of the frame area B around the display area A. The light-shielding film 8 is formed of a resin film to which a black pigment is added, for example, to have the same thickness as the color filters 7R, 7G, and 7B. In this embodiment, the light shielding film 8 is formed except for the outer peripheral portion of the frame region B.
[0023]
Also, on the inner surface of the signal electrode substrate 2 facing the scanning electrode substrate 1, a side of an electrode end of the scanning electrode 5 in a frame region B between the display region A and a sealing portion formed by the sealing material 3. A plurality of cross-section electrodes 9 formed corresponding to the plurality of scanning electrodes 5, respectively, and from the cross-section electrodes 9 to the terminal arrangement section 2a through the regions between the formation section and the outer edge of the seal section. A plurality of derived scanning electrode terminal wirings 10 are provided.
[0024]
In this embodiment, a plurality of cross electrodes 9 corresponding to every other scan electrode (for example, odd-numbered scan electrode) 6 are placed in a frame area B on one end side of the scan electrode 5. Are arranged in one line so as to be arranged on the extension line of the scanning electrode 5 and correspond to every other scanning electrode (for example, an even-numbered scanning electrode) 6 in a frame region B on the other end side of the scanning electrode 5. A plurality of cross-section electrodes 9 are arranged in a row so as to be positioned on an extension of each scanning electrode 5.
[0025]
All of the plurality of scanning electrode terminal wirings 10 respectively derived from the plurality of cross section electrodes 9 are all guided from the cross section electrode 9 in the direction of the seal section, and further pass through the inside of the seal section to form the seal section. It is led out to the terminal arrangement part 2a from the outer edge of the side along the terminal arrangement part 2a.
[0026]
Further, as shown in FIG. 1, the liquid crystal display element has a drive circuit element (IC chip or LSI) (not shown) for applying a drive voltage between the plurality of scanning electrodes 5 and the signal electrodes 6 to the terminal arrangement portion 2a. And a plurality of signal electrode terminal wirings 6a and scanning electrode terminal wirings 10 are respectively led out to the drive circuit mounting part 11 of the terminal arrangement part 2a, and are provided at the leading ends thereof. A connection terminal (not shown) connected to each of the plurality of output terminals of the drive circuit element is formed.
[0027]
Further, a plurality of input wirings 12 for supplying a control signal from an external circuit (not shown) to the drive circuit element are provided in the terminal arrangement section 2a from the outer edge of the terminal arrangement section 2a to the drive circuit mounting section 11. Connection terminals (not shown) that are respectively connected to a plurality of input terminals of the drive circuit element are formed at ends of the input wires 12 on the drive circuit mounting portion 11 side. .
[0028]
On the other hand, on the inner surface of the scanning electrode substrate 1, a plurality of electrodes formed at a height corresponding to the interval (liquid crystal layer thickness) between the inner surfaces of the pair of substrates 1 and 2 corresponding to the plurality of crossing electrodes 9, respectively. Are provided.
[0029]
The plurality of protrusions 13 are formed of a color filter laminated film in which the three color filters 7R, 7G, and 7B of the three colors of red, green, and blue are stacked. The convex portion 13 is formed in a prism shape having a plane area substantially equal to the area of one pixel in which the scanning electrode 5 and the signal electrode 6 face each other. 2 is formed to have a slightly larger area than the plane area of the convex portion 13 in consideration of an error in the positioning accuracy of the two substrates 1 and 2 when the two are bonded via the sealing material 3.
[0030]
The ends of the plurality of scanning electrodes 5 provided on the inner surface of the scanning electrode substrate 1 (on the color filters 7R, 7G, 7B corresponding to the display area A) are provided in the frame area B, respectively. It extends over the light-shielding film 8 and over the convex portion 13 made of the color filter laminated film.
[0031]
Although not shown in the figure, the display regions A on the inner surfaces of the pair of substrates 1 and 2 cover the electrodes 6 and 5 to bring the liquid crystal molecules of the liquid crystal layer 4 into a predetermined alignment state. An orientation film for orientation is provided.
[0032]
Further, the frame-shaped sealing material 3 is formed of a thermosetting resin such as an epoxy resin, and the pair of substrates 1 and 2 has the sealing material 3 printed on the inner surface of any one of the second substrates. Then, a gap material 14 made of glass beads or the like is scattered and superimposed on the inner surface of the first substrate, and after adjusting the distance between the two substrates 1 and 2 to a value defined by the gap material 14 by applying pressure, The sealing material 3 is cured by heating, so that it is joined through the sealing material 3.
[0033]
An extension 5 a formed on the projection (color filter laminated film) 13 of the plurality of scanning electrodes 5 adjusts the interval between the pair of substrates 1 and 2 to a value defined by the gap material 14. As a result, the sealing member 3 is brought into contact with the cross portion electrode 9, and is further strongly contacted with the cross portion electrode 9 due to shrinkage during curing of the sealing material 3, and is connected to the cross portion electrode 9 with good conductivity.
[0034]
In addition, the sealing material 3 is provided with a liquid crystal injection port (not shown) formed by partially missing a side opposite to the terminal arrangement portion 2a. After joining the pair of substrates 1 and 2 via the sealing material 3, the substrate is formed by injecting liquid crystal from the liquid crystal injection port by a vacuum injection method, and the liquid crystal injection port is sealed after the liquid crystal is injected. I have.
[0035]
This liquid crystal display element includes a plurality of scanning electrodes 5 on a side of an electrode end of a scanning electrode 5 in a frame area B between a display area A in which a plurality of pixels are arranged in a matrix and a sealing portion formed of a sealing material 3. Since a plurality of cross-section electrodes 9 are formed in correspondence with each other, as in a conventional liquid crystal display element in which a cross-section electrode is formed in the sealing section, the extension of the scanning electrode terminal wiring or the scanning electrode is formed with a sealing section. It is not necessary to avoid and form.
[0036]
That is, in the conventional liquid crystal display element, a plurality of cross portion electrodes are formed in the seal portion, and the plurality of cross portion electrodes and the extended portions of the plurality of scan electrodes are connected to each other by the cross material in the seal portion. In a liquid crystal display element in which a cross portion electrode is formed in a seal portion beside an electrode end of a scanning electrode and a scanning electrode terminal wire is led from the cross portion electrode to a terminal arrangement portion, the scanning electrode terminal wiring is The wiring must be formed through the frame region avoiding the seal portion so as not to short-circuit with the cross portion electrode other than the derived cross portion electrode, and a plurality of cross portion electrodes are formed along the terminal arrangement portion. In the liquid crystal display element formed in the seal portion and leading the extended portion of the scanning electrode to the cross portion electrode, the extended portion of the scanning electrode is connected to a cross material other than the cross material connected thereto. It must be formed through the frame region while avoiding the sealing portion so as not to be contacted.
[0037]
On the other hand, in the liquid crystal display element of the above embodiment, the cross portion electrode 9 is formed on the side of the electrode end of the scanning electrode 5. Since there is no conductor short-circuited with the scanning electrode terminal wiring 10 in the seal portion since it is formed in the frame region B between It is not necessary to form the terminal wiring 10 avoiding the seal portion.
[0038]
In this liquid crystal display element, the plurality of scanning electrode terminal wires 10 are led out to the terminal array portion 2a through a region between the formation portion of the cross portion electrode 9 and the outer edge of the seal portion. The inside of the portion can be used as a routing space for the scanning electrode terminal wiring 10, so that a plurality of scanning electrode terminal wirings 10 are formed through the inside of the seal portion, and the frame region B between the display region A and the seal portion is formed. Can be narrow.
[0039]
In this embodiment, since all of the plurality of scanning electrode terminal wires 10 are led out to the terminal array portion 2a through the inside of the seal portion, the frame region B can be made narrower.
[0040]
In addition, this liquid crystal display element has a space between the inner surfaces of the pair of substrates 1 and 2 corresponding to the plurality of cross-section electrodes 9 formed on the inner surface of the scanning electrode substrate 1 and the inner surface of the signal electrode substrate 2, respectively. A plurality of protrusions 13 formed at a height corresponding to the height of the plurality of scan electrodes 5 formed on the scan electrode substrate 1, and the end portions of the plurality of scan electrodes 5 formed on the scan electrode substrate 1 are respectively extended on the plurality of protrusions 13. As a result, the extended portions 5a of the scanning electrodes 5 on the convex portions 13 are respectively contacted and connected to the plurality of cross portion electrodes 9, so that the plurality of scanning electrodes 5 can be easily connected to the plurality of cross portion electrodes 9. It can be connected with a simple structure.
[0041]
As described above, in this liquid crystal display element, while the plurality of scanning electrodes 5 and the signal electrodes 6 are connected to one driving circuit, the frame area B around the display area A can be narrowed. In addition, a plurality of scanning electrodes 5 provided on the scanning electrode substrate 1 can be connected to a plurality of crossing electrodes 9 provided on the signal electrode substrate 2 with a simple structure.
[0042]
Further, the liquid crystal display element of the above embodiment has a plurality of color filters 7R. 7G and 7B, and a plurality of scanning electrodes 5 are connected to the color filters 7R. 7G and 7B, and a plurality of projections 13 respectively corresponding to the plurality of cross-section electrodes 9 are formed on the color filters 7R. 7G and 7B are formed by a color filter laminated film in which a plurality of color filters 7R. The projections 13 can be formed by using the process of sequentially forming 7G and 7B, so that the liquid crystal display element can be manufactured with a small number of processes and at low cost.
[0043]
Further, the liquid crystal display element of the above embodiment is provided with a driving circuit element mounting portion 11 for applying a driving voltage between the plurality of scanning electrodes 5 and the signal electrodes 6 on the terminal array portion 2a of the signal electrode substrate 2, In order to lead the signal electrode terminal wiring 6a and the scanning electrode terminal wiring 10 to the drive circuit mounting part 11 of the terminal arrangement part 2a, respectively, and to supply a control signal from an external circuit to the terminal arrangement part 2a to the drive circuit element. Since the plurality of input wirings 12 are provided by being guided from the outer edge of the terminal arrangement section 2a to the driving circuit mounting section 11, the plurality of output terminals of the driving circuit element are connected to the plurality of signal electrode terminal wirings 6a. By connecting the input terminals to the plurality of input wirings 12 and mounting them on the driving circuit mounting section 11, the liquid crystal display element and its driving circuit are connected. It is possible to construct a liquid crystal display device.
[0044]
In the above embodiment, the color filters 7R, 7G, and 7B of a plurality of colors corresponding to the display area A and the plurality of convex portions 13 corresponding to the plurality of cross-portion electrodes 9 of the signal electrode substrate 2 are formed by scanning electrodes. Although provided on the substrate 1, the color filters 7R, 7G, 7B and the plurality of protrusions 13 formed of a color filter laminated film are provided on the signal electrode substrate 2, and the plurality of cross portion electrodes 9 are respectively provided on the plurality of cross electrodes. The extended portions 5a of the plurality of scan electrodes 5 are formed on the substrate surface of the scan electrode substrate 1, and the extended portions 5a of the scan electrodes 5 are formed on the plurality of cross portion electrodes 9. Each may be contact-connected.
[0045]
In the liquid crystal display element of the above embodiment, the distance between the pair of substrates 1 and 2 is defined by the gap material 14 made of glass beads or the like. A plurality of columnar spacers may be provided on the inner surface of the substrate 1 and defined. In this case, a plurality of protrusions respectively corresponding to the plurality of cross portion electrodes 9 may be formed of the same material as the columnar spacers.
[0046]
FIG. 4 is a sectional view of a part of a liquid crystal display device according to a second embodiment of the present invention. The liquid crystal display device of this embodiment includes a pair of substrates 1 in a display area A on the inner surface of a scanning electrode substrate 1, for example. , 2 are provided at an appropriate pitch by a photosensitive resin, and a plurality of cross portions provided on the signal electrode substrate 2 are provided in a frame region B on the inner surface of the scanning electrode substrate 1. A plurality of protrusions 16 formed of the same photosensitive resin 15a as the columnar spacer 15 are provided so as to correspond to the electrodes 9, respectively, and extensions 5a of the plurality of scanning electrodes 5 are formed thereon.
[0047]
In this embodiment, the plurality of protrusions 16 are provided on the scanning electrode substrate 1. However, the plurality of protrusions 16 are provided on the signal electrode substrate 2, and the cross portion electrode is provided on each of the protrusions 16. 9 may be formed.
[0048]
Further, in the above embodiment, the plurality of cross portion electrodes 9 are distributed and formed in the frame region B on one end side and in the frame region B on the other end side of the scanning electrode 5. The scanning electrodes 5 are arranged in one of the frame areas B on one end side and the other end side of the scanning electrode 5, and all the scanning electrode terminal wirings 10 are connected to the formation section of the cross section electrode 9 and the sealing section. It may be led out to the terminal arrangement part 2a through a region between the outer edge.
[0049]
In the case where a plurality of cross portion electrodes 9 are arranged and arranged in the frame region B on one end side and the frame region B on the other end side of the scanning electrode 5 as in the above embodiment, all the cross portion electrodes 9 are formed. In the case where the electrodes 9 are arranged and formed in the frame area B on one of the one end side and the other end side of the scanning electrode 5, the cross section electrodes 9 are not limited to one row, but may be adjacent to each other. May be arranged in a plurality of columns in the row direction (the length direction of the scanning electrode 5) by about the same as the pixel pitch, with the number of columns being about 2 to 4 or less.
[0050]
Further, in the above embodiment, all of the scanning electrode terminal wires 10 respectively derived from the plurality of cross portion electrodes 9 are led to the terminal array portion 2a through the seal portion. When the number of electrodes is large, a part of the scanning electrode terminal wirings 10 is led out to the terminal arrangement part 2a through the inside of the sealing part, and the other scanning electrode terminal wirings 10 are connected to the forming part of the cross part electrode 9 and the sealing part. It may be led out to the terminal arrangement part 2a through a region between the terminals.
[0051]
【The invention's effect】
The liquid crystal display element according to the present invention includes, on a second substrate having a terminal arrangement portion, a plurality of signal electrode terminal wirings derived from the plurality of signal electrodes formed on the second substrate to the terminal arrangement portion; A plurality of crosses formed corresponding to the plurality of scanning electrodes, respectively, on the side of the electrode end of the scanning electrode in a frame region between a display region in which pixels are arranged in a matrix and a sealing portion made of a sealing material. And a plurality of scanning electrode terminal wirings led to the terminal array portion through a region between the forming electrode and the outer edge of the seal portion from the cross electrode and the cross portion electrodes, and an end portion of the plurality of scanning electrodes. Are respectively extended to portions facing the plurality of cross-section electrodes, and one of the plurality of cross-section electrodes and an extension of the plurality of scanning electrodes is formed on the substrate on which the plurality of cross-section electrodes are formed. To The plurality of scan electrodes are formed on a plurality of convex portions formed at a height corresponding to the distance between the first and second substrates, and the extended portions of the plurality of scan electrodes are formed on the plurality of cross portion electrodes. Since each of the plurality of scanning electrodes and the signal electrodes is connected to one driving circuit, the frame area around the display area can be narrowed. A plurality of scanning electrodes provided on the first substrate can be connected to a plurality of crossing electrodes provided on the second substrate with a simple structure.
[0052]
When the present invention is applied to a liquid crystal display element that displays a color image, a substrate provided with the protrusions corresponding to the cross-section electrodes is provided with a plurality of color filters corresponding to the display area, A plurality of electrodes on the substrate side are formed on the color filter, and the protrusions are preferably formed by a color filter laminated film in which the color filters of the plurality of colors are stacked. The convex portions are formed by using the step of sequentially forming the color filters of the plurality of colors in the display area of the first substrate, so that the liquid crystal display element can be manufactured with a small number of steps and at low cost.
[0053]
Further, it is desirable that all of the plurality of scanning electrode terminal wirings be led out to the terminal arrangement portion through the inside of the seal portion. In this manner, the frame region can be further narrowed.
[0054]
Further, in the liquid crystal display element, a mounting portion of a driving circuit element for applying a driving voltage between a plurality of scanning electrodes and a signal electrode is provided in a terminal arrangement portion of the second substrate, and the plurality of signal electrode terminal wirings are provided. And the scanning electrode terminal wiring are preferably respectively led out to the drive circuit mounting portion of the terminal array portion. In this way, the drive circuit element is connected to the plurality of signal electrode terminals by the plurality of terminals. A liquid crystal display device including a liquid crystal display element and a drive circuit for the liquid crystal display device can be configured by being connected to the wiring and the scanning electrode terminal wiring and mounted on the drive circuit mounting portion.
[Brief description of the drawings]
FIG. 1 is a perspective view of a liquid crystal display device according to a first embodiment of the present invention.
FIG. 2 is an enlarged plan view of a part of a second substrate of the liquid crystal display device.
FIG. 3 is an enlarged sectional view of a part of the liquid crystal display element.
FIG. 4 is a sectional view of a part of a liquid crystal display device according to a second embodiment of the present invention.
[Explanation of symbols]
1, 2, substrate, 2a terminal arrangement portion, 3, seal material, 4, liquid crystal layer, 5, scanning electrode, 5a, extension, 6, signal electrode, 6a, signal electrode terminal wiring, 7R, 7G, 7B, color Filter: 8: light shielding film, 9: cross electrode, 10: scanning electrode terminal wiring, 11: drive circuit mounting part, 12: input wiring, 13, 16: convex part, A: display area, B: frame area.

Claims (4)

行方向に沿う複数の走査電極が形成された第1の基板と、列方向の一端に前記第1の基板の外方に張出す端子配列部を有し、列方向に沿う複数の信号電極及びこれらの信号電極からそれぞれ前記端子配列部に導出された複数の信号電極端子配線が形成され、前記第1の基板と対向配置された第2の基板と、前記走査電極と信号電極とが対向する部分により形成される複数の画素がマトリックス状に配列する表示領域を取り囲んで設けられ、前記第1と第2の基板を接合する枠状のシール材と、前記第1と第2の基板間の前記シール材により囲まれた領域に設けられた液晶層とを備え、
前記第2の基板に、前記表示領域と前記シール材によるシール部との間の領域内の前記走査電極の電極端の側方に前記複数の走査電極にそれぞれ対応させて形成された複数のクロス部電極及びこれらのクロス部電極からその形成部と前記シール部の外縁との間の領域を通して前記端子配列部に導出された複数の走査電極端子配線とが設けられ、前記複数の走査電極の端部がそれぞれ前記複数のクロス部電極に対向する部分に延長され、前記複数のクロス部電極と前記複数の走査電極の延長部のいずれか一方が、それが形成された基板に前記複数のクロス部電極にそれぞれ対応させて前記第1と第2の基板間の間隔に対応する高さに形成された複数の凸部上に形成され、前記複数の走査電極の延長部が前記複数のクロス部電極にそれぞれ接触接続されていることを特徴とする液晶表示素子。
A first substrate on which a plurality of scanning electrodes are formed along the row direction, a terminal array at one end in the column direction that extends outside the first substrate, a plurality of signal electrodes extending along the column direction; A plurality of signal electrode terminal wirings respectively derived from these signal electrodes to the terminal arrangement portion are formed, and the second substrate disposed opposite to the first substrate, the scanning electrode and the signal electrode are opposed to each other. A plurality of pixels formed by the portions are provided so as to surround a display area in which the pixels are arranged in a matrix, and a frame-shaped sealing material for joining the first and second substrates; A liquid crystal layer provided in a region surrounded by the sealing material,
On the second substrate, a plurality of crosses formed in a region between the display region and a seal portion made of the sealant, on a side of an electrode end of the scan electrode, respectively corresponding to the plurality of scan electrodes. And a plurality of scanning electrode terminal wirings led to the terminal arrangement portion through the region between the forming electrode and the outer edge of the seal portion from the cross electrode and the cross electrode, and an end of the plurality of scanning electrodes is provided. Portions are respectively extended to portions opposed to the plurality of cross portion electrodes, and one of the plurality of cross portion electrodes and the extension portion of the plurality of scan electrodes is provided on the substrate on which the plurality of cross portion electrodes are formed. The plurality of cross electrodes are formed on a plurality of protrusions formed at a height corresponding to a distance between the first and second substrates corresponding to the electrodes, respectively, and an extension of the plurality of scan electrodes is formed on the plurality of cross electrodes. Contact each The liquid crystal display element characterized by being.
クロス部電極に対応する凸部が設けられた基板に、表示領域に対応させて複数の色のカラーフィルタが設けられ、その基板側の複数の電極が前記カラーフィルタの上に形成されるとともに、前記凸部が前記複数の色のカラーフィルタを積み重ねたカラーフィルタ積層膜により形成されていることを特徴とする請求項1に記載の液晶表示素子。A plurality of color filters corresponding to the display area are provided on the substrate provided with the projections corresponding to the cross-section electrodes, and a plurality of electrodes on the substrate side are formed on the color filters, 2. The liquid crystal display device according to claim 1, wherein the projection is formed of a color filter laminated film in which the color filters of the plurality of colors are stacked. 複数の走査電極端子配線の全てがシール部内を通して端子配列部に導出されていることを特徴とする請求項1に記載の液晶表示素子。2. The liquid crystal display device according to claim 1, wherein all of the plurality of scanning electrode terminal wirings are led to the terminal arrangement portion through the inside of the seal portion. 第2の基板の端子配列部に複数の走査電極と信号電極との間に駆動電圧を印加する駆動回路素子の搭載部が設けられ、複数の信号電極端子配線と走査電極端子配線がそれぞれ前記端子配列部の駆動回路搭載部まで導出され、その導出端に前記駆動回路素子との接続端子が形成されていることを特徴とする請求項1〜3のいずれかに記載の液晶表示素子。A mounting portion for a driving circuit element for applying a driving voltage between a plurality of scanning electrodes and signal electrodes is provided in a terminal array portion of the second substrate, and a plurality of signal electrode terminal wirings and scanning electrode terminal wirings are respectively provided with the terminals. The liquid crystal display device according to any one of claims 1 to 3, wherein the liquid crystal display device is led out to a drive circuit mounting portion of the array portion, and a connection terminal with the drive circuit element is formed at a leading end thereof.
JP2002378584A 2002-12-26 2002-12-26 Liquid crystal display element Pending JP2004212423A (en)

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US7796217B2 (en) * 2004-09-09 2010-09-14 Sharp Kabushiki Kaisha Liquid crystal display panel, method of inspecting the same, and inspection apparatus used for the same
CN107065259A (en) * 2017-03-14 2017-08-18 惠科股份有限公司 A kind of display panel and display device
CN108011051A (en) * 2017-11-30 2018-05-08 武汉天马微电子有限公司 A kind of organic electroluminescence display panel and its display device
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7796217B2 (en) * 2004-09-09 2010-09-14 Sharp Kabushiki Kaisha Liquid crystal display panel, method of inspecting the same, and inspection apparatus used for the same
CN107065259A (en) * 2017-03-14 2017-08-18 惠科股份有限公司 A kind of display panel and display device
CN108011051A (en) * 2017-11-30 2018-05-08 武汉天马微电子有限公司 A kind of organic electroluminescence display panel and its display device
CN108011051B (en) * 2017-11-30 2019-08-13 武汉天马微电子有限公司 A kind of organic light emitting display panel and its display device
CN112533366A (en) * 2020-11-25 2021-03-19 广州国显科技有限公司 Display module assembly and flexible circuit board
WO2022180985A1 (en) * 2021-02-25 2022-09-01 株式会社ジャパンディスプレイ Light control device

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