JP2015087730A - Liquid crystal display element - Google Patents

Liquid crystal display element Download PDF

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JP2015087730A
JP2015087730A JP2013228767A JP2013228767A JP2015087730A JP 2015087730 A JP2015087730 A JP 2015087730A JP 2013228767 A JP2013228767 A JP 2013228767A JP 2013228767 A JP2013228767 A JP 2013228767A JP 2015087730 A JP2015087730 A JP 2015087730A
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liquid crystal
electrode terminal
crystal display
display element
circuit board
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JP6240473B2 (en
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大石　正樹
Masaki Oishi
正樹 大石
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Citizen Holdings Co Ltd
Citizen Finetech Miyota Co Ltd
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Citizen Holdings Co Ltd
Citizen Finetech Miyota Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a liquid crystal display element that has high reliability in the electrical connection between a circuit board and a liquid crystal panel.SOLUTION: In a configuration where an electrode terminal 10a provided on the surface of a glass substrate 2 constituting a liquid crystal panel and electrode terminals 11 provided on the surface of a circuit board 3 are electrically connected to each other through a conductive adhesive 5, the electrode terminals 11 on the circuit board 3 are each arranged in an area opposite to a corner part of the glass substrate 2 and extend to a position opposite to edges of a long side and a short side of the glass substrate 2 that extend in a direction orthogonal to each other from the apex of the corner part (X-shaft direction and Y-shaft direction).

Description

本発明は、液晶表示素子に関するものである。   The present invention relates to a liquid crystal display element.

図５は、従来の液晶表示素子を示す上面図及びＡ−Ａ断面図である。従来の液晶表示素子１では、共に矩形状のガラス基板２とシリコン基板７を水平方向へ互いにオフセットさせた状態でシール材８を介して貼り合わせることで形成された空間に液晶９を封入した液晶パネルが、シリコン基板７を下にして回路基板３の上に搭載されている。ガラス基板２の片側の短辺は、シリコン基板７の端面を越えて水平方向へ突出しており、その突出した部位である突出部２ａの下面には、液晶９に電圧を印加するための透明電極１０の一部で構成される電極端子１０ａが設けられている。ガラス基板２の突出部２ａに設けられた電極端子１０ａと対向する回路基板３の表面には、回路基板３が有する所定の配線と電気的に接続された電極端子４が設けられており、ガラス基板２の突出部に設けられた電極端子１０ａと、導電性接着剤５を介して電気的に接続されている。ここで、回路基板３上の電極端子４は、ガラス基板２の短辺中央部と対向する領域に配置されると共に、ガラス基板２の短辺を越えた位置までＸ軸方向（ガラス基板２の短辺と直交する方向）へ延在している。尚、図示は省略するが、ガラス基板２に設けられた透明電極１０と対向するシリコン基板７の表面には、透明電極１０と共に液晶９に電圧を印加するための複数の画素電極が形成されており、導電性接着剤５が配置される側とは反対側のシリコン基板７の端部において、ワイヤー等を介して回路基板３と電気的に接続されている。また、透明電極１０は、ガラス基板２のシリコン基板７と対向する側の表面の全面に形成されている。（例えば、特許文献１、２参照）   FIG. 5 is a top view and a cross-sectional view taken along line AA of a conventional liquid crystal display element. In the conventional liquid crystal display element 1, a liquid crystal in which a liquid crystal 9 is sealed in a space formed by bonding together a rectangular glass substrate 2 and a silicon substrate 7 with a sealing material 8 in a state where they are offset from each other in the horizontal direction. The panel is mounted on the circuit board 3 with the silicon substrate 7 facing down. A short side on one side of the glass substrate 2 protrudes in the horizontal direction beyond the end surface of the silicon substrate 7, and a transparent electrode for applying a voltage to the liquid crystal 9 is formed on the lower surface of the protruding portion 2 a which is the protruding portion. The electrode terminal 10a comprised by a part of 10 is provided. An electrode terminal 4 electrically connected to a predetermined wiring of the circuit board 3 is provided on the surface of the circuit board 3 facing the electrode terminal 10a provided on the protruding portion 2a of the glass substrate 2, and glass The electrode terminal 10 a provided on the protruding portion of the substrate 2 is electrically connected via the conductive adhesive 5. Here, the electrode terminal 4 on the circuit board 3 is disposed in a region facing the central portion of the short side of the glass substrate 2, and extends in the X-axis direction (on the glass substrate 2 to the position beyond the short side of the glass substrate 2. Extending in the direction perpendicular to the short side). Although not shown, a plurality of pixel electrodes for applying a voltage to the liquid crystal 9 together with the transparent electrode 10 are formed on the surface of the silicon substrate 7 facing the transparent electrode 10 provided on the glass substrate 2. In addition, the end of the silicon substrate 7 on the side opposite to the side where the conductive adhesive 5 is disposed is electrically connected to the circuit board 3 via a wire or the like. The transparent electrode 10 is formed on the entire surface of the glass substrate 2 on the side facing the silicon substrate 7. (For example, see Patent Documents 1 and 2)

特開２００４−３０９７２３号公報JP 2004-309723 A 特開２０１２−０１３９７５号公報JP 2012-013975 A

図５に示す従来の液晶表示素子において、導電性接着剤５は、ガラス基板２の短辺と直交する方向（Ｘ軸方向）からガラス基板２と回路基板３との隙間６に徐々に浸透するが、特に導電性接着剤５の粘度が高い場合には、導電性接着剤５が隙間６に浸透し難いため、導電性接着剤５と回路基板３上の電極端子４との接触面積が十分に確保されず、導電性接着剤５と電極端子４との電気的接続が不安定になるという問題がある。   In the conventional liquid crystal display element shown in FIG. 5, the conductive adhesive 5 gradually permeates into the gap 6 between the glass substrate 2 and the circuit substrate 3 from the direction (X-axis direction) orthogonal to the short side of the glass substrate 2. However, particularly when the viscosity of the conductive adhesive 5 is high, the conductive adhesive 5 hardly penetrates into the gap 6, so that the contact area between the conductive adhesive 5 and the electrode terminal 4 on the circuit board 3 is sufficient. However, the electrical connection between the conductive adhesive 5 and the electrode terminal 4 becomes unstable.

また、回路基板３上の電極端子４は、ガラス基板２の短辺中央部と対向する領域に配置されていることから、その構造上、導電性接着剤５は、Ｘ軸方向からしか塗布できず、それが要因で導電性接着剤５を塗布する際の作業性が低下し、結果的に導電性接着剤５と電極端子４との電気的接続が不安定になるという問題もある。   Moreover, since the electrode terminal 4 on the circuit board 3 is disposed in a region facing the central portion of the short side of the glass substrate 2, the conductive adhesive 5 can be applied only from the X-axis direction due to its structure. Therefore, the workability when applying the conductive adhesive 5 is lowered due to the above factor, and as a result, there is a problem that the electrical connection between the conductive adhesive 5 and the electrode terminal 4 becomes unstable.

本発明は、以上の問題点に鑑みて成されたものであり、回路基板と液晶パネルとの電気的接続の信頼性が高い液晶表示素子を提供することを目的とする。   The present invention has been made in view of the above problems, and an object of the present invention is to provide a liquid crystal display element with high reliability of electrical connection between a circuit board and a liquid crystal panel.

液晶に電圧を印加するための第一電極を有する第一基板と、前記液晶に電圧を印加するための第二電極を有する第二基板とが、前記第一電極と前記第二電極が互いに対向するように貼り合わされることで形成された空間に液晶が封入された液晶パネルと、当該液晶パネルを構成する前記第一基板と対向するように配置された回路基板と、を備え、前記第二基板には、前記第一基板の端面を超えて突出して前記回路基板の表面と対向する突出部が設けられ、当該突出部と対向する前記回路基板の表面には、前記回路基板が有する所定の配線と電気的に接続された第一電極端子が設けられ、当該第一電極端子と対向する前記突出部の表面には、前記第二電極と電気的に接続された第二電極端子が設けられ、前記第一電極端子と前記第二電極端子とは、導電性接着剤を介して電気的に接続されている、液晶表示素子であって、前記第一電極端子は、前記突出部の角部と対向する領域に配置されると共に、当該角部の頂点から互いに異なる方向へ延びる第一辺及び第二辺の縁と対向する位置まで延在している、液晶表示素子とする。   A first substrate having a first electrode for applying a voltage to the liquid crystal and a second substrate having a second electrode for applying a voltage to the liquid crystal are such that the first electrode and the second electrode face each other A liquid crystal panel in which liquid crystal is sealed in a space formed by being bonded together, and a circuit board arranged to face the first substrate constituting the liquid crystal panel, and the second The substrate is provided with a protruding portion that protrudes beyond the end surface of the first substrate and faces the surface of the circuit board, and the surface of the circuit board that faces the protruding portion has a predetermined portion that the circuit board has A first electrode terminal electrically connected to the wiring is provided, and a second electrode terminal electrically connected to the second electrode is provided on a surface of the protruding portion facing the first electrode terminal. The first electrode terminal and the second electrode terminal; The liquid crystal display element is electrically connected via a conductive adhesive, wherein the first electrode terminal is disposed in a region facing the corner of the protruding portion, and The liquid crystal display element is extended to positions facing the edges of the first side and the second side extending in different directions from the apex.

前記第一辺は、前記突出部が突出する方向と平行な辺であり、前記第一電極端子は、前記第一辺の縁と対向する位置を越えて延在し、且つ、前記第二辺の縁と対向する位置を越えて延在しない、液晶表示素子とすることができる。   The first side is a side parallel to a direction in which the protruding portion protrudes, the first electrode terminal extends beyond a position facing an edge of the first side, and the second side The liquid crystal display element does not extend beyond the position facing the edge of the liquid crystal display element.

前記第二辺は、前記突出部が突出する方向とは直交する方向と平行な辺であり、前記第一電極端子は、前記第二辺の縁と対向する位置を越えて延在し、且つ、前記第一辺の縁と対向する位置を越えて延在しない、液晶表示素子とすることができる。   The second side is a side parallel to a direction orthogonal to the direction in which the protruding portion protrudes, the first electrode terminal extends beyond a position facing an edge of the second side, and The liquid crystal display element does not extend beyond the position facing the edge of the first side.

前記第一辺は、前記突出部が突出する方向と平行な辺であり、前記第二辺は、前記突出部が突出する方向とは直交する方向と平行な辺であり、前記第一電極端子は、前記第一辺及び前記第二辺の縁と対向する位置を越えて延在する、液晶表示素子とすることができる。   The first side is a side parallel to a direction in which the protruding portion protrudes, the second side is a side parallel to a direction orthogonal to the direction in which the protruding portion protrudes, and the first electrode terminal Can be a liquid crystal display element that extends beyond a position facing the edges of the first side and the second side.

前記第一辺の縁と対向する位置を越えて延在した前記第一電極端子の一部と、前記第二辺の縁と対向する位置を越えて延在した前記第二電極端子の一部は、互いに接続されている、液晶表示素子とすることができる。   A part of the first electrode terminal extending beyond a position facing the edge of the first side and a part of the second electrode terminal extending beyond a position facing the edge of the second side Can be liquid crystal display elements connected to each other.

前記第二電極端子は、前記突出部の表面のうち前記第一電極端子と対向する領域を覆うように形成されている、液晶表示素子とすることができる。   The second electrode terminal may be a liquid crystal display element formed so as to cover a region facing the first electrode terminal in the surface of the protruding portion.

前記第二基板は、短辺と長辺を有する矩形状を成し、前記突出部が突出する方向は、前記第二基板の前記長辺と平行な方向である、液晶表示素子とすることができる。   The second substrate has a rectangular shape having a short side and a long side, and a direction in which the protruding portion protrudes is a direction parallel to the long side of the second substrate. it can.

本発明によれば、導電性接着剤が回路基板とガラス基板との隙間に浸透し易くなり、また、導電性樹脂を塗布する際の作業性が向上することから、回路基板と液晶パネルとの電気的接続の信頼性が向上する。   According to the present invention, the conductive adhesive easily penetrates into the gap between the circuit board and the glass substrate, and the workability when applying the conductive resin is improved. The reliability of electrical connection is improved.

本発明の液晶表示素子の実施形態を示す上面図及びＡ−Ａ断面図The top view and AA sectional view showing the embodiment of the liquid crystal display element of the present invention 本発明の液晶表示素子の実施形態を示す上面図及びＡ−Ａ断面図The top view and AA sectional view showing the embodiment of the liquid crystal display element of the present invention 本発明の液晶表示素子の実施形態を示す上面図及びＡ−Ａ断面図The top view and AA sectional view showing the embodiment of the liquid crystal display element of the present invention 本発明の液晶表示素子の実施形態を示す上面図及びＡ−Ａ断面図The top view and AA sectional view showing the embodiment of the liquid crystal display element of the present invention 従来の液晶表示素子を示す上面図及びＡ−Ａ断面図Top view and AA sectional view showing a conventional liquid crystal display element

図１は、本発明の液晶表示素子の実施形態を示す上面図及びＡ−Ａ断面図である。図１に示す液晶表示素子１２では、共に矩形状のガラス基板２とシリコン基板７を水平方向へ互いにオフセットさせた状態でシール材８を介して貼り合わせることで形成された空間に液晶９を封入した液晶パネルが、シリコン基板７を下にして回路基板３の上に搭載されている。ガラス基板２の片側の短辺は、シリコン基板７の端面を越えて水平方向へ突出しており、その突出した部位である突出部２ａの下面には、液晶９に電圧を印加するための透明電極１０の一部で構成される電極端子１０ａが設けられている。ガラス基板２の突出部２ａに設けられた電極端子１０ａと対向する回路基板３の表面には、回路基板３が有する所定の配線と電気的に接続された電極端子１１が二つ設けられており、ガラス基板２の突出部に設けられた電極端子１０ａと、それぞれ導電性接着剤５を介して電気的に接続されている。尚、図示は省略するが、ガラス基板２に設けられた透明電極１０と対向するシリコン基板７の表面には、透明電極１０と共に液晶９に電圧を印加するための複数の画素電極が形成されており、導電性接着剤５が配置される側とは反対側のシリコン基板７の端部において、ワイヤー等を介して回路基板３と電気的に接続されている。また、透明電極１０は、ガラス基板２のシリコン基板７と対向する側の表面の全面に形成されている。   FIG. 1 is a top view and an AA cross-sectional view showing an embodiment of a liquid crystal display element of the present invention. In the liquid crystal display element 12 shown in FIG. 1, the liquid crystal 9 is sealed in a space formed by bonding together a rectangular glass substrate 2 and a silicon substrate 7 with a sealing material 8 in a state of being offset from each other in the horizontal direction. The liquid crystal panel thus mounted is mounted on the circuit board 3 with the silicon substrate 7 facing down. A short side on one side of the glass substrate 2 protrudes in the horizontal direction beyond the end surface of the silicon substrate 7, and a transparent electrode for applying a voltage to the liquid crystal 9 is formed on the lower surface of the protruding portion 2 a which is the protruding portion. The electrode terminal 10a comprised by a part of 10 is provided. Two electrode terminals 11 electrically connected to predetermined wirings of the circuit board 3 are provided on the surface of the circuit board 3 opposed to the electrode terminals 10a provided on the protruding portion 2a of the glass substrate 2. The electrode terminal 10 a provided on the protruding portion of the glass substrate 2 is electrically connected via the conductive adhesive 5. Although not shown, a plurality of pixel electrodes for applying a voltage to the liquid crystal 9 together with the transparent electrode 10 are formed on the surface of the silicon substrate 7 facing the transparent electrode 10 provided on the glass substrate 2. In addition, the end of the silicon substrate 7 on the side opposite to the side where the conductive adhesive 5 is disposed is electrically connected to the circuit board 3 via a wire or the like. The transparent electrode 10 is formed on the entire surface of the glass substrate 2 on the side facing the silicon substrate 7.

回路基板３上の二つの電極端子１１は、ガラス基板２の短辺と長辺とが交わる角部と対向する領域にそれぞれ配置されると共に、その角部の頂点から互いに直交する方向へ延びるガラス基板２の長辺及び短辺の縁と対向する位置まで延在している。この構成により、導電性接着剤５は、二つの電極端子４に対して、それぞれＸ軸方向及びＹ軸方向（ガラス基板２の短辺と平行な方向）の何れからも塗布が可能となっている。   The two electrode terminals 11 on the circuit board 3 are respectively disposed in regions facing the corners where the short side and the long side of the glass substrate 2 intersect, and extend from the apexes of the corners in directions orthogonal to each other. It extends to a position facing the edges of the long side and the short side of the substrate 2. With this configuration, the conductive adhesive 5 can be applied to the two electrode terminals 4 from both the X-axis direction and the Y-axis direction (direction parallel to the short side of the glass substrate 2). Yes.

本実施形態では、導電性接着剤５は、ガラス基板２の角部の縁に沿ってＸ軸方向及びＹ軸方向の双方向から回り込むようにしてガラス基板２と回路基板３との隙間６に効率良く浸透することから、導電性接着剤５と電極端子１１との電気的接続の信頼性が高まる。また、導電性接着剤５は、Ｘ軸方向及びＹ軸方向の何れからも塗布が可能であることから、導電性接着剤５を塗布する際の作業性が向上し、結果的に導電性接着剤５と電極端子１１との電気的接続の信頼性が高まる。特にＸ軸方向及びＹ軸方向の双方向から導電性接着剤５を塗布すれば、導電性接着剤５と電極端子１１との電気的接続の信頼性をより高めることができる。また、回路基板３上の電極端子１１のＸ軸方向は、ガラス基板２の短辺の縁と対向する位置までしか形成されていないため、その分だけ回路基板３のＸ軸方向の寸法を短くすること（小型化）もできる。   In the present embodiment, the conductive adhesive 5 is inserted into the gap 6 between the glass substrate 2 and the circuit board 3 so as to wrap around from both sides in the X-axis direction and the Y-axis direction along the edge of the corner of the glass substrate 2. Since it penetrates efficiently, the reliability of the electrical connection between the conductive adhesive 5 and the electrode terminal 11 is increased. In addition, since the conductive adhesive 5 can be applied from both the X-axis direction and the Y-axis direction, the workability when applying the conductive adhesive 5 is improved, and as a result, the conductive adhesive 5 The reliability of electrical connection between the agent 5 and the electrode terminal 11 is increased. In particular, if the conductive adhesive 5 is applied from both directions in the X-axis direction and the Y-axis direction, the reliability of electrical connection between the conductive adhesive 5 and the electrode terminal 11 can be further increased. Further, since the X-axis direction of the electrode terminal 11 on the circuit board 3 is formed only up to the position facing the edge of the short side of the glass substrate 2, the dimension of the circuit board 3 in the X-axis direction is shortened accordingly. Can be done (miniaturized).

尚、本実施形態においては、回路基板３上の電極端子１１は、二箇所に設けられているが、一箇所にのみ設けられていても良い。また、回路基板３上の電極端子１１の形状は、図１に示したような矩形状に限らず、例えば、ガラス基板２の長辺及び短辺を二辺とする三角形や台形等の形状を適宜選択することが可能である。   In the present embodiment, the electrode terminals 11 on the circuit board 3 are provided at two locations, but may be provided only at one location. Further, the shape of the electrode terminal 11 on the circuit board 3 is not limited to the rectangular shape as shown in FIG. 1, and for example, a shape such as a triangle or a trapezoid having two long sides and two short sides of the glass substrate 2 is used. It is possible to select appropriately.

また、導電性接着剤５を塗布する方向は、図１に示したＸ軸方向及びＹ軸方向に限らず、Ｘ軸方向とＹ軸方向との間の方向から塗布することも可能である。特にその場合には、導電性接着剤５がＸ軸方向及びＹ軸方向の双方向から回り込み易くなるため、ガラス基板２と回路基板３との隙間６に浸透し易くなる。   The direction in which the conductive adhesive 5 is applied is not limited to the X-axis direction and the Y-axis direction shown in FIG. 1, and it is also possible to apply from the direction between the X-axis direction and the Y-axis direction. In that case, in particular, the conductive adhesive 5 easily turns around from both directions in the X-axis direction and the Y-axis direction, and thus easily penetrates into the gap 6 between the glass substrate 2 and the circuit board 3.

図２は、本発明の液晶表示素子の実施形態を示す上面図及びＡ−Ａ断面図である。本実施形態は、実施例１と同様の基本構成を備え、実施例１との相違点として、回路基板３上の電極端子１１は、ガラス基板２の長辺の縁と対向する位置を越えてＹ軸方向へ延在している。この構成によれば、電極端子１１がＹ軸方向へ延在した分だけ導電性接着剤５と電極端子１１との接触面積が増加し、また、導電性接着剤５を塗布する際の作業性も向上するため、両者の電気的接続の信頼性がより高まる。また、その一方で、電極端子１１のＸ軸方向は、ガラス基板２の短辺の縁と対向する位置までしか延在していないため、回路基板３のＸ軸方向の寸法を短くすることができる。   FIG. 2 is a top view and an AA cross-sectional view showing an embodiment of the liquid crystal display element of the present invention. The present embodiment has the same basic configuration as that of the first embodiment. As a difference from the first embodiment, the electrode terminal 11 on the circuit board 3 extends beyond the position facing the edge of the long side of the glass substrate 2. It extends in the Y-axis direction. According to this configuration, the contact area between the conductive adhesive 5 and the electrode terminal 11 increases by the amount that the electrode terminal 11 extends in the Y-axis direction, and the workability when applying the conductive adhesive 5 is increased. Therefore, the reliability of the electrical connection between the two is further increased. On the other hand, since the X-axis direction of the electrode terminal 11 extends only to a position facing the edge of the short side of the glass substrate 2, the dimension of the circuit board 3 in the X-axis direction can be shortened. it can.

図３は、本発明の液晶表示素子の実施形態を示す上面図及びＡ−Ａ断面図である。本実施形態は、実施例１と同様の基本構成を備え、実施例１との相違点として、回路基板３上の電極端子１１は、ガラス基板２の短辺の縁と対向する位置を越えてＸ軸方向へ延在している。この構成によれば、電極端子１１がＸ軸方向へ延在した分だけ導電性接着剤５と電極端子１１との接触面積が増加し、また、導電性接着剤５を塗布する際の作業性も向上するため、両者の電気的接続の信頼性がより高まる。   FIG. 3 is a top view and an AA cross-sectional view showing an embodiment of the liquid crystal display element of the present invention. This embodiment has the same basic configuration as that of the first embodiment. As a difference from the first embodiment, the electrode terminal 11 on the circuit board 3 extends beyond the position facing the short edge of the glass substrate 2. It extends in the X-axis direction. According to this configuration, the contact area between the conductive adhesive 5 and the electrode terminal 11 is increased by the extent that the electrode terminal 11 extends in the X-axis direction, and workability when applying the conductive adhesive 5 is increased. Therefore, the reliability of the electrical connection between the two is further increased.

図４は、本発明の液晶表示素子の実施形態を示す上面図及びＡ−Ａ断面図である。本実施形態は、実施例１と同様の基本構成を備え、実施例１との相違点として、回路基板３上の電極端子１１は、ガラス基板２の短辺及び長辺の縁と対向する位置を越えてそれぞれＸ軸方向及びＹ軸方向へ延在し、さらに、それら延在した部位が互いに接続され、全体として矩形状を成している。この構成によれば、電極端子１１がＸ軸方向及びＹ軸方向へ延在した分だけ導電性接着剤５と電極端子１１との接触面積が増加し、また、導電性接着剤５を塗布する際の作業性も向上するため、両者の電気的接続の信頼性がより高まる。尚、本実施形態において、回路基板３上の電極端子１１の形状は、図４に示した矩形状に限らず、円形等のその他の形状を適宜選択することが可能である。   FIG. 4 is a top view and an AA cross-sectional view showing an embodiment of the liquid crystal display element of the present invention. The present embodiment has the same basic configuration as that of the first embodiment, and as a difference from the first embodiment, the electrode terminals 11 on the circuit board 3 are opposed to the edges of the short side and the long side of the glass substrate 2. Are extended in the X-axis direction and the Y-axis direction, respectively, and the extended portions are connected to each other to form a rectangular shape as a whole. According to this configuration, the contact area between the conductive adhesive 5 and the electrode terminal 11 is increased by the extent that the electrode terminal 11 extends in the X-axis direction and the Y-axis direction, and the conductive adhesive 5 is applied. Since the workability at the time is also improved, the reliability of the electrical connection between them is further increased. In the present embodiment, the shape of the electrode terminal 11 on the circuit board 3 is not limited to the rectangular shape shown in FIG. 4, and other shapes such as a circle can be appropriately selected.

本発明の実施例２と実施例３は、互いに組み合わせて実施することが可能である。   Embodiments 2 and 3 of the present invention can be implemented in combination with each other.

液晶パネルを構成する基板の材料は、ガラスやシリコンに限らず、その他の材料を適宜選択することが可能である。   The material of the substrate constituting the liquid crystal panel is not limited to glass or silicon, and other materials can be appropriately selected.

液晶パネルを構成する基板の形状は、矩形状に限らず、導電性接着剤５が接続される領域に角部を有するその他の形状を適宜選択することが可能である。   The shape of the substrate constituting the liquid crystal panel is not limited to a rectangular shape, and other shapes having corners in the region to which the conductive adhesive 5 is connected can be selected as appropriate.

ガラス基板２上の電極端子１０ａは、透明電極１０の一部で構成されるのではなく、透明電極１０とは別体として構成されていても良い。また、電極端子１０ａは、導電性接着剤５との接着面積を大きくする意味では、少なくとも回路基板３上の電極端子１１と対向する領域を覆うように形成されているのが好ましいが、その領域よりも狭い範囲に形成されていても良い。   The electrode terminal 10 a on the glass substrate 2 is not configured as a part of the transparent electrode 10 but may be configured as a separate body from the transparent electrode 10. In addition, the electrode terminal 10a is preferably formed so as to cover at least a region facing the electrode terminal 11 on the circuit board 3 in terms of increasing the adhesion area with the conductive adhesive 5. It may be formed in a narrower range.

ガラス基板２に設けられた透明電極１０は、ガラス基板２のシリコン基板７と対向する側の表面のうち、機能的に必要十分な領域のみに部分的に形成されていても良い。   The transparent electrode 10 provided on the glass substrate 2 may be partially formed only in a functionally necessary and sufficient region on the surface of the glass substrate 2 on the side facing the silicon substrate 7.

液晶パネルは、回路基板３から離間して配置されていても良く、その場合、液晶パネルは、回路基板３とは異なる任意の部材により支持されることとなる。   The liquid crystal panel may be disposed away from the circuit board 3, and in that case, the liquid crystal panel is supported by an arbitrary member different from the circuit board 3.

本発明の技術思想は、液晶パネルがガラス基板２を下にして回路基板３上に搭載された液晶表示素子に対しても適用することが可能である。その場合、回路基板３上の電極端子１１は、それと対向するシリコン基板７の表面に設けられた電極端子に導電性接着剤５を介して電気的に接続されることとなるが、この構成においても実施例１〜４と同様の効果を得ることができる。   The technical idea of the present invention can also be applied to a liquid crystal display element in which a liquid crystal panel is mounted on a circuit board 3 with the glass substrate 2 facing down. In this case, the electrode terminal 11 on the circuit board 3 is electrically connected to the electrode terminal provided on the surface of the silicon substrate 7 opposite to the electrode terminal 11 via the conductive adhesive 5. Also, the same effects as those of Examples 1 to 4 can be obtained.

１ 液晶表示素子
２ ガラス基板（第二基板）
２ａ 突出部
３ 回路基板
４ 電極端子
５ 導電性接着剤
６ 隙間
７ シリコン基板（第一基板）
８ シール材
９ 液晶
１０ 透明電極
１０ａ 電極端子（第二電極端子）
１１ 電極端子（第一電極端子）
１２ 液晶表示素子 1 Liquid crystal display element 2 Glass substrate (second substrate)
2a Protruding part 3 Circuit board 4 Electrode terminal 5 Conductive adhesive 6 Gap 7 Silicon substrate (first substrate)
8 Sealing material 9 Liquid crystal 10 Transparent electrode 10a Electrode terminal (second electrode terminal)
11 Electrode terminal (first electrode terminal)
12 Liquid crystal display elements

Claims (7)

液晶に電圧を印加するための第一電極を有する第一基板と、前記液晶に電圧を印加するための第二電極を有する第二基板とが、前記第一電極と前記第二電極が互いに対向するように貼り合わされることで形成された空間に液晶が封入された液晶パネルと、
当該液晶パネルを構成する前記第一基板と対向するように配置された回路基板と、を備え、
前記第二基板には、前記第一基板の端面を超えて突出して前記回路基板の表面と対向する突出部が設けられ、
当該突出部と対向する前記回路基板の表面には、前記回路基板が有する所定の配線と電気的に接続された第一電極端子が設けられ、
当該第一電極端子と対向する前記突出部の表面には、前記第二電極と電気的に接続された第二電極端子が設けられ、
前記第一電極端子と前記第二電極端子とは、導電性接着剤を介して電気的に接続されている、
液晶表示素子であって、
前記第一電極端子は、前記突出部の角部と対向する領域に配置されると共に、当該角部の頂点から互いに異なる方向へ延びる第一辺及び第二辺の縁と対向する位置まで延在している、ことを特徴とする液晶表示素子。 A first substrate having a first electrode for applying a voltage to the liquid crystal and a second substrate having a second electrode for applying a voltage to the liquid crystal are such that the first electrode and the second electrode face each other A liquid crystal panel in which liquid crystal is sealed in a space formed by bonding together,
A circuit board arranged to face the first substrate constituting the liquid crystal panel,
The second substrate is provided with a protruding portion that protrudes beyond the end surface of the first substrate and faces the surface of the circuit board,
A first electrode terminal electrically connected to a predetermined wiring of the circuit board is provided on the surface of the circuit board facing the protruding portion,
On the surface of the projecting portion facing the first electrode terminal, a second electrode terminal electrically connected to the second electrode is provided,
The first electrode terminal and the second electrode terminal are electrically connected via a conductive adhesive,
A liquid crystal display element,
The first electrode terminal is disposed in a region facing the corner portion of the protruding portion and extends from the vertex of the corner portion to a position facing the edge of the first side and the second side extending in different directions. The liquid crystal display element characterized by the above-mentioned. 前記第一辺は、前記突出部が突出する方向と平行な辺であり、前記第一電極端子は、前記第一辺の縁と対向する位置を越えて延在し、且つ、前記第二辺の縁と対向する位置を越えて延在しない、ことを特徴とする請求項１に記載の液晶表示素子。   The first side is a side parallel to a direction in which the protruding portion protrudes, the first electrode terminal extends beyond a position facing an edge of the first side, and the second side The liquid crystal display element according to claim 1, wherein the liquid crystal display element does not extend beyond a position facing the edge of the liquid crystal display. 前記第二辺は、前記突出部が突出する方向とは直交する方向と平行な辺であり、前記第一電極端子は、前記第二辺の縁と対向する位置を越えて延在し、且つ、前記第一辺の縁と対向する位置を越えて延在しない、ことを特徴とする請求項１に記載の液晶表示素子。   The second side is a side parallel to a direction orthogonal to the direction in which the protruding portion protrudes, the first electrode terminal extends beyond a position facing an edge of the second side, and The liquid crystal display element according to claim 1, wherein the liquid crystal display element does not extend beyond a position facing the edge of the first side. 前記第一辺は、前記突出部が突出する方向と平行な辺であり、前記第二辺は、前記突出部が突出する方向とは直交する方向と平行な辺であり、前記第一電極端子は、前記第一辺及び前記第二辺の縁と対向する位置を越えて延在する、ことを特徴とする請求項１に記載の液晶表示素子。   The first side is a side parallel to a direction in which the protruding portion protrudes, the second side is a side parallel to a direction orthogonal to the direction in which the protruding portion protrudes, and the first electrode terminal The liquid crystal display element according to claim 1, wherein the liquid crystal display element extends beyond a position facing edges of the first side and the second side. 前記第一辺の縁と対向する位置を越えて延在した前記第一電極端子の一部と、前記第二辺の縁と対向する位置を越えて延在した前記第二電極端子の一部は、互いに接続されている、ことを特徴とする請求項４に記載の液晶表示素子。   A part of the first electrode terminal extending beyond a position facing the edge of the first side and a part of the second electrode terminal extending beyond a position facing the edge of the second side The liquid crystal display elements according to claim 4, wherein the liquid crystal display elements are connected to each other. 前記第二電極端子は、前記突出部の表面のうち前記第一電極端子と対向する領域を覆うように形成されている、ことを特徴とする請求項１〜５の何れか一つに記載の液晶表示素子。   The said 2nd electrode terminal is formed so that the area | region which opposes said 1st electrode terminal among the surfaces of the said protrusion part may be covered, The Claim 1 characterized by the above-mentioned. Liquid crystal display element. 前記第二基板は、短辺と長辺を有する矩形状を成し、前記突出部が突出する方向は、前記第二基板の前記長辺と平行な方向である、ことを特徴とする請求項１〜６の何れか一つに記載の液晶表示素子。   The second substrate has a rectangular shape having a short side and a long side, and a direction in which the protruding portion protrudes is a direction parallel to the long side of the second substrate. The liquid crystal display element as described in any one of 1-6.
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