JP2006011240A - Liquid crystal display device - Google Patents

Liquid crystal display device Download PDF

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JP2006011240A
JP2006011240A JP2004191224A JP2004191224A JP2006011240A JP 2006011240 A JP2006011240 A JP 2006011240A JP 2004191224 A JP2004191224 A JP 2004191224A JP 2004191224 A JP2004191224 A JP 2004191224A JP 2006011240 A JP2006011240 A JP 2006011240A
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electrode
wiring
substrate
liquid crystal
seal
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JP4688441B2 (en
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Natsuko Hori
Koji Tsurusaki
なつ子 堀
幸二 鶴崎
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Kyocera Corp
京セラ株式会社
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<P>PROBLEM TO BE SOLVED: To provide a liquid crystal display device which has high display quality by eliminating or reducing display defects such as crosstalk and display unevenness while coping with size reduction. <P>SOLUTION: The liquid crystal display device of the present invention is constituted by putting a 1st substrate 2 where one electrode group 4 extending in one direction, one electrode connection wire 9, the other electrode connection wire 10, and the other electrode connection wire 11 are formed and a 2nd substrate 3 formed by stacking the other electrode group 5 extending in the other direction and an alignment film opposite each other so that both the electrode group cross each other, sticking them together across a seal member 7 containing many conductive particles 14 at the circumference of the one substrate 3, and charging liquid crystal inside the seal member. The other electrode group 5 is divided into two blocks and conduction connection parts 12 and 13 between the other electrode group 5 and the other electrode connection wires 10 and 11 are arranged at the center part of the other side part of the seal member 7. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、基板上の半導体素子接続用の接続端子が矩形状の表示領域の一辺または対向する二辺に沿って形成したSTN方式液晶表示装置の改良に関するものである。   The present invention relates to an improvement in an STN liquid crystal display device in which connection terminals for connecting semiconductor elements on a substrate are formed along one side or two opposite sides of a rectangular display region.
現在、携帯電話の製造コストの低減化、小型化、表示品質の向上が大きな課題となっているが、その課題を解消するために、二つ使われていたドライバーICを1チップに集約した液晶パネルが提案されている。すなわち、セグメント用とコモン用の双方のIC機能を備えたドライバーICでもって、1個に集約し、これによってICや実装コストを低減させる技術がある。この技術においては、ドライバーIC(駆動素子)の接続端子から表示電極までの配線の配線抵抗をより均一に低抵抗化し、表示品質も改良することが重要であり、特開2003−161958の配線パターンを提案している。   Currently, reducing the manufacturing cost of mobile phones, downsizing, and improving display quality are major issues. To solve these issues, a liquid crystal display that combines two driver ICs on a single chip. A panel has been proposed. That is, there is a technique for reducing the IC and the mounting cost by consolidating the driver ICs having both the segment and common IC functions. In this technique, it is important to reduce the wiring resistance of the wiring from the connection terminal of the driver IC (driving element) to the display electrode more uniformly and to improve the display quality. Japanese Patent Application Laid-Open No. 2003-161958 Has proposed.
そして、それらの機器に用いられる液晶表示装置については、小型化および軽量化という要求に応じるべく、液晶表示装置の形状変更や駆動素子の実装技術がなされており、それと同時に表示品位も改良する研究開発がされている。   As for liquid crystal display devices used in these devices, liquid crystal display device shape changes and drive element mounting technologies have been made to meet the demands for miniaturization and weight reduction, and at the same time, research to improve display quality. Has been developed.
従来の液晶表示装置を図8〜図12により説明する。ここでは、携帯電話用の液晶表示装置を例に説明する。図8は駆動素子を実装する前の状態である2枚のガラス基板貼り合せ構造の従来の液晶表示装置の平面図、図9は図8に示す第1基板の概略配線図であり、概略配線を実線で示している。また、図10は液晶表示装置の第2基板の概略配線図を示し、その配線をガラス面から透視した図であり、概略配線を点線で示している。更に図11は第1基板上に駆動素子18を実装し、フレキシブル配線基板等から成る外部配線基板19を接続した図である。さらに、図12は駆動素子18を実装したフレキシブル配線基板等から成る外部配線基板19を接続した液晶表示装置を示している。   A conventional liquid crystal display device will be described with reference to FIGS. Here, a liquid crystal display device for a mobile phone will be described as an example. FIG. 8 is a plan view of a conventional liquid crystal display device having a laminated structure of two glass substrates in a state before mounting a driving element, and FIG. 9 is a schematic wiring diagram of the first substrate shown in FIG. Is shown by a solid line. FIG. 10 is a schematic wiring diagram of the second substrate of the liquid crystal display device. The wiring is seen through the glass surface, and the schematic wiring is indicated by a dotted line. Further, FIG. 11 is a diagram in which the driving element 18 is mounted on the first substrate and an external wiring substrate 19 made of a flexible wiring substrate or the like is connected. Further, FIG. 12 shows a liquid crystal display device to which an external wiring board 19 made of a flexible wiring board or the like on which the driving element 18 is mounted is connected.
図8示すように、液晶表示装置Xは矩形状で大面積の第1基板2と、矩形状で小面積の透明な第2基板3とを貼り合わせた構造であって、第1基板2の内面にはITOなどからなる多くの一方電極群4をストライプ状に形成し、第2基板3の内面にはITOなどからなる多くの他方電極群5をストライプ状に形成し、双方の電極群4,5を直交配置させた部位を表示部6とする。さらにこれら各電極群4、5、の上および表示部にはそれぞれにポリイミド合成樹脂などからなる配向膜(図示せず)を被覆している。そして、第1基板2と第2基板3との間に所定の間隔を保つべくスペーサを配し、さらに双方の基板2、3をシール部材7でもって貼り合せ、しかる後にこれら両基板間に液晶Lを充填したものである。   As shown in FIG. 8, the liquid crystal display device X has a structure in which a rectangular first large-area substrate 2 and a rectangular second small-area transparent substrate 3 are bonded to each other. Many electrode groups 4 made of ITO or the like are formed on the inner surface in a stripe pattern, and many other electrode groups 5 made of ITO or the like are formed on the inner surface of the second substrate 3 in a stripe pattern. , 5 is a display unit 6. Further, an alignment film (not shown) made of a polyimide synthetic resin or the like is coated on each of the electrode groups 4 and 5 and the display portion. Then, a spacer is arranged between the first substrate 2 and the second substrate 3 so as to keep a predetermined distance, and both the substrates 2 and 3 are bonded together with the seal member 7, and thereafter, a liquid crystal is interposed between these two substrates. L is filled.
第1基板2の上には、一辺部端付近に、駆動素子接続端子8を形成しているが(これらを図8中に点線楕円領域にて示す)、駆動素子接続端子8と電極群4、5との接続構成を以下に述べる。   On the first substrate 2, drive element connection terminals 8 are formed in the vicinity of one side edge (these are indicated by dotted elliptical areas in FIG. 8). The connection configuration with 5 is described below.
まず、一方電極群4の接続は、駆動素子接続端子8から一方電極接続配線9を一方電極4まで延在させ接続する。他方電極群5の接続は、駆動素子接続端子8と第1の導電接続部との間に第1基板2上に設けた他方電極接続配線10及び駆動素子接続端子8と第2の導電接続部の間に第1基板2上に設けた他方電極接続配線11と他方電極群5を延在した他方両辺側に延在した他方電極延在配線15、他方電極延在配線16を電気的に接続するシール部材7中に導電性粒子14(プラスチック粒子表面にAuメッキ処理した粒子等)を混入して導通する第1の導電接続部12および第2の導電接続部13において、導通接続している。   First, the one electrode group 4 is connected by extending the one electrode connection wiring 9 from the drive element connection terminal 8 to the one electrode 4. The other electrode group 5 is connected to the other electrode connecting wiring 10 and the driving element connecting terminal 8 provided on the first substrate 2 between the driving element connecting terminal 8 and the first conductive connecting portion and the second conductive connecting portion. The other electrode connection wiring 11 provided on the first substrate 2 is electrically connected to the other electrode extension wiring 15 and the other electrode extension wiring 16 that extend to the other both sides extending the other electrode group 5. Conductive connection is made in the first conductive connection portion 12 and the second conductive connection portion 13 that are conductive by mixing conductive particles 14 (such as particles plated with Au on the surface of the plastic particles) into the sealing member 7 to be conducted. .
図11は液晶表示装置1に一方電極4側と他方電極5側の出力機能を合わせもつ駆動素子(IC)18を基板上に直接実装したCOG(チップオンガラスChip On Glass)で、また図12は駆動素子(IC)18を実装したフレキシブルプリント基板(FPC)19などでもって構成したもの、すなわちTCP(テープキャリアパッケージTape Career Package)又はCOF(チップオンフィルムChip On Film)である。これらは、液晶表示装置Xの端部に配設し、第1基板2上の駆動素子接続端子8と異方性導電膜等(図示せず)を介して圧着している。   FIG. 11 shows a COG (Chip On Glass) in which a driving element (IC) 18 having both the output functions of the one electrode 4 side and the other electrode 5 side is directly mounted on the substrate in the liquid crystal display device 1. Is a flexible printed circuit board (FPC) 19 mounted with a drive element (IC) 18, that is, a TCP (Tape Carrier Package) or COF (Chip On Film). These are disposed at the end of the liquid crystal display device X and are pressure-bonded via a drive element connection terminal 8 on the first substrate 2 and an anisotropic conductive film (not shown).
かくして液晶表示装置Xはシール部材7に導電接続部12、13を設けることで、液晶表示装置の幅方向が小さくなり、小型化を達成することができた。
特開2003−161958公報
Thus, in the liquid crystal display device X, by providing the conductive connection portions 12 and 13 on the seal member 7, the width direction of the liquid crystal display device is reduced, and the size reduction can be achieved.
JP 2003-161958 A
しかしながら、前述した構成の液晶表示装置Xのままでは、電子機器の小型に沿い超小額縁化が要求され一方電極接続配線および他方電極接続配線が高密度(線幅、線間が狭く)になってしまい、結果、配線抵抗値が大きくなってしまい、他の配線抵抗との差異により実際にはクロストークや濃淡ムラの表示不良を発生させてしまう。   However, with the liquid crystal display device X having the above-described configuration, an ultra-small frame is required along with the miniaturization of electronic equipment, and one electrode connection wiring and the other electrode connection wiring have high density (the line width and the space between the lines are narrow). As a result, the wiring resistance value becomes large, and a display defect such as crosstalk or shading unevenness actually occurs due to a difference from other wiring resistances.
本発明は、上述の問題点に鑑みて案出されたものであり、その目的は超小額縁化(小型化)に対応すると同時にクロストークや表示ムラの表示不良が生じないか、もしくはその発生を低減し、これによって高い表示品位を達成した液晶表示装置を提供することにある。   The present invention has been devised in view of the above-mentioned problems, and its purpose is to cope with ultra-small frame size (miniaturization), and at the same time, display failure such as crosstalk and display unevenness does not occur or occurs. It is an object of the present invention to provide a liquid crystal display device that achieves high display quality.
本発明は、 一方方向に延びる一方電極群と配向膜とを順次積層してなる第1基板と、前記一方方向と直交する他方方向に延びる他方電極群と配向膜とを順次積層して成る第2基板とを、前記両電極群が直交するように対向させて、前記いずれか一方の基板の周囲で多数の導電性粒子を含有するシール部材を介して貼り合わせ、該シール部材の内側に液晶を充填して成るとともに、
第1基板上に形成した一方電極群は、その一端がシール部材の一辺部を通して延在した一方電極接続配線を有し、且つ第2基板上に形成した他方電極群は、その一端がシール部材の他辺部に到達する他方電極延在配線を有するとともに、
前記第1基板上に、前記シール部材の他辺部から表示領域と該シール部材の他辺部との間の領域、シール部材の一辺部を介して延在せしめた他方電極接続配線を有し、且つ前記シール部材の他辺部に含有する導電粒子によって前記第2基板の他方電極延在配線と前記第1基板の他方電極接続配線とを通電せしめる導電接続部を構成した液晶表示装置において、
前記第2基板の他方電極群、他方電極延在配線及び第1基板の他方電極接続配線をそれぞれ2つのブロックに分割するとともに、分割した一方のブロック側の他方電極延在配線と他方電極接続配線とを前記シール部材の一対の他辺部の一方側の第1の導通接続部で接続させ、且つ他方のブロック側の他方電極延在配線と他方電極接続配線とを前記シール部材の一対の他辺部の他方側の第2の導通接続部で接続させるとともに、
第1の導電接続部と第2の導電接続部とを、互いに対向するシール部材の他辺部の中心部に寄せて配置したことを特徴とする液晶表示装置である。
The present invention provides a first substrate in which one electrode group extending in one direction and an alignment film are sequentially stacked, and another electrode group extending in the other direction orthogonal to the one direction and an alignment film are sequentially stacked. Two substrates are opposed to each other so that the two electrode groups are orthogonal to each other, and are bonded to each other through a sealing member containing a large number of conductive particles around the one of the substrates. And filling
The one electrode group formed on the first substrate has one electrode connection wiring whose one end extends through one side of the seal member, and the other electrode group formed on the second substrate has one end of the seal member While having the other electrode extension wiring that reaches the other side of the
On the first substrate, the other electrode connection wiring extended from the other side of the seal member to the display region and the other side of the seal member via one side of the seal member. In addition, in the liquid crystal display device configured with the conductive connection portion for energizing the other electrode extension wiring of the second substrate and the other electrode connection wiring of the first substrate by the conductive particles contained in the other side portion of the seal member,
The other electrode group of the second substrate, the other electrode extension wiring, and the other electrode connection wiring of the first substrate are each divided into two blocks, and the other electrode extension wiring and the other electrode connection wiring on one of the divided blocks are divided. And the other electrode extension wiring and the other electrode connection wiring on the other block side are connected to each other in the pair of other sides of the seal member. While connecting at the second conductive connection on the other side of the side,
The liquid crystal display device is characterized in that the first conductive connection portion and the second conductive connection portion are arranged close to the center of the other side of the seal member facing each other.
また、前記2ブロック分割境界を挟んで隣接しあう他方電極は、その電極に接続する他方電極接続延在配線及び他方電極接続配線は、実質的に同一配線抵抗に設定されていることを特徴とする。   Further, the other electrode adjacent to each other across the two-block division boundary is characterized in that the other electrode connection extended wiring and the other electrode connection wiring connected to the electrode are set to substantially the same wiring resistance. To do.
さらに、前記他方電極接続配線は、表示領域と該シール部材の他辺部との間の領域において、シール部材の配設方向に対し斜めに引き回された部位を有することを特徴とする。   Further, the other electrode connection wiring has a portion that is routed obliquely with respect to the arrangement direction of the seal member in a region between the display region and the other side of the seal member.
本発明によれば、上述した如く第1の導電接続部および第2導電接続部をシール部材の一対の他辺部に分けて形成するとともに、その中心に寄せて配置した。また、第1の導電接続部および第2の導電接続部をシール部材の一対の他辺部の中心で対向するように配置させている。更に他方電極接続配線は、それぞれの電極接続配線間で配線抵抗のばらつきを低減するようにシール部材配設方向に対し斜めに引き回している。これにより、他方電極群での配線抵抗値を低下させとともに、配線抵抗値のバラツキを有効に抑えることができ、その結果、クロストークや濃淡ムラが生じないか、もしくはその発生を低減できる。表示ムラを顕著に解消し、これによって高い表示品位を達成した液晶表示装置を提供できる。   According to the present invention, as described above, the first conductive connection portion and the second conductive connection portion are separately formed on the pair of other side portions of the seal member and arranged close to the center thereof. Further, the first conductive connection portion and the second conductive connection portion are arranged so as to face each other at the center of the pair of other side portions of the seal member. Further, the other electrode connection wiring is routed obliquely with respect to the seal member disposition direction so as to reduce variation in wiring resistance between the respective electrode connection wirings. As a result, the wiring resistance value in the other electrode group can be reduced, and variations in the wiring resistance value can be effectively suppressed. As a result, crosstalk and density unevenness do not occur or the occurrence thereof can be reduced. It is possible to provide a liquid crystal display device that remarkably eliminates display unevenness and thereby achieves high display quality.
以下、本発明の液晶表示装置を図面に基づいて詳説する
図1は駆動素子を実装する前の状態である2枚の透明基板を貼り合わせた本発明の液晶表示装置であり、(a)は平面図であり、(b)は側面図である。図2は図1に示す第1の導電接続部12要部拡大図である。また、図3は液晶表示装置の一方の透明基板での概略配線を示し、ガラス基板の内面より内側に形成した配線を見た図であり、概略配線を実線で示した。また図4は他方のガラス基板の内面に形成した概略配線をその外面より見た図であり、点線で示した。図5は図3に示した他方電極接続配線を拡大した図である。さらに図6、図7は本発明の液晶表示装置に駆動素子を実装した場合を示している。なお、従来の液晶表示装置および液晶表示装置と同一個所には同一符号を付す。
Hereinafter, the liquid crystal display device of the present invention will be described in detail with reference to the drawings. FIG. 1 is a liquid crystal display device of the present invention in which two transparent substrates, which are in a state prior to mounting of a driving element, are bonded together. It is a top view, (b) is a side view. FIG. 2 is an enlarged view of a main part of the first conductive connection portion 12 shown in FIG. FIG. 3 shows a schematic wiring on one transparent substrate of the liquid crystal display device, and is a view of the wiring formed inside the inner surface of the glass substrate. The schematic wiring is shown by a solid line. FIG. 4 is a view of the schematic wiring formed on the inner surface of the other glass substrate as viewed from the outer surface, and is indicated by a dotted line. FIG. 5 is an enlarged view of the other electrode connection wiring shown in FIG. 6 and 7 show a case where a driving element is mounted on the liquid crystal display device of the present invention. In addition, the same code | symbol is attached | subjected to the same location as the conventional liquid crystal display device and a liquid crystal display device.
図1に示すように、液晶表示装置Aは矩形状で大面積の第1基板2と、矩形状の小面積の透明な第2基板3とを貼り合わせた構造であって、図3に示す如く第1基板2の内面にはITO(インジウムスズオキサイドIndium Tin Oxide)などからなり、一方方向に延びる複数の一方電極がストライプ状に形成されている。この複数の電極が一方電極群4である。第2基板3の内面には、図4に示すように前記ITOなどからなり、一方方向と直交する方向である他方方向に延びる複数の他方電極がストライプ状に形成されている。この複数の電極が他方電極群5である。そして、双方の電極群4、5が直交して表示領域6が構成される。これら各電極群4、5の上にはそれぞれにポリイミド合成樹脂などからなる配向膜(図示せず)を被覆している。そして、第1基板2と第2基板3との間に所定の間隔を保つべくスペーサを配し、さらに双方の基板2、3をシール部材7でもって貼り合せ、しかる後にこれら両基板間にSTNなどの液晶Lを充填したものである。   As shown in FIG. 1, the liquid crystal display device A has a structure in which a rectangular first substrate 2 having a large area and a rectangular second transparent substrate 3 having a small area are bonded to each other, as shown in FIG. As described above, the inner surface of the first substrate 2 is made of ITO (Indium Tin Oxide) or the like, and a plurality of one electrodes extending in one direction are formed in stripes. The plurality of electrodes is one electrode group 4. On the inner surface of the second substrate 3, as shown in FIG. 4, a plurality of other electrodes made of the ITO or the like and extending in the other direction, which is a direction orthogonal to one direction, are formed in stripes. The plurality of electrodes is the other electrode group 5. Both electrode groups 4 and 5 are orthogonal to form a display area 6. Each of the electrode groups 4 and 5 is covered with an alignment film (not shown) made of a polyimide synthetic resin or the like. Then, a spacer is arranged between the first substrate 2 and the second substrate 3 so as to maintain a predetermined distance, and both the substrates 2 and 3 are bonded together with the seal member 7, and then the STN is interposed between these two substrates. Or the like filled with liquid crystal L.
そして表示領域は、第2基板3の他方電極群5を2つブロックに分けて、2つの表示ブロックしている。図1ではブロック境界線17を堺に、上部側のブロックと下側のブロックに分けられている。尚、第1基板に形成された一方電極群4は、2つのブロックに共通的に延びている。   The display area is divided into two blocks by dividing the other electrode group 5 of the second substrate 3 into two blocks. In FIG. 1, the block boundary line 17 is divided into an upper block and a lower block with the block boundary line 17 as a base. The one electrode group 4 formed on the first substrate extends in common to the two blocks.
第1基板2の上には、一辺部端付近に、駆動素子接続端子8を形成しているが(これらを図1中に点線楕円領域にて示す)、接続端子8と電極群4、5との接続構成を以下に述べる。   On the first substrate 2, drive element connection terminals 8 are formed in the vicinity of one side edge (these are indicated by dotted elliptical areas in FIG. 1). The connection configuration is described below.
まず、第1の基板2に形成された一方電極群4の接続は、駆動素子接続端子8から一方電極接続配線9を一方電極4まで延在させ接続する。即ち、第1基板2上に形成した一方電極群4は、その一端がシール部材7の一辺部を通して延在した一方電極接続配線9が形成されていることになる。   First, the one electrode group 4 formed on the first substrate 2 is connected by extending the one electrode connection wiring 9 from the drive element connection terminal 8 to the one electrode 4. That is, the one electrode group 4 formed on the first substrate 2 is formed with one electrode connection wiring 9 having one end extending through one side of the seal member 7.
他方電極群5の接続は、第1基板2上の駆動素子接続端子8か2ら他方電極接続配線10、11が延び、例えば他方電極接続配線10はシール部材7の一対の他辺部の一方側の第1の導通接続部12に延びている。また、他方電極接続配線11はシール部材7の一対の他辺部の他方側の第2の導通接続部13に延びている。そして、各導通接続部12、13で第2基板3の他方電極接続配線10、11に接続している。   For the connection of the other electrode group 5, the other electrode connection wirings 10 and 11 extend from the drive element connection terminals 8 or 2 on the first substrate 2. For example, the other electrode connection wiring 10 is one of a pair of other side portions of the seal member 7. It extends to the first conductive connection 12 on the side. The other electrode connection wiring 11 extends to the second conductive connection portion 13 on the other side of the pair of other sides of the seal member 7. The conductive connection portions 12 and 13 are connected to the other electrode connection wirings 10 and 11 of the second substrate 3.
即ち、駆動素子接続端子8と第1の導電接続部12との間に第1基板2上に設けた他方電極接続配線10が、駆動素子接続端子8と第2の導電接続部13の間に第1基板2上に設けた他方電極接続配線11がそれぞれ図面の左右に振り分けられて形成され、第2基板3に形成した他方電極群5のそれぞれの側に延在した他方電極延在配線15、他方電極延在配線16にシール部材7を介して電気的に接続する。このシール部材7には、図2に示すように導電性粒子14(プラスチック粒子表面にAuメッキ処理した粒子等)を混入して、例えば第1基板2の他方電極接続配線10と第2基板3の他方電極延在配線15を導通接続している。この導通接続部は、シール部材7の他辺部(左側辺部)に存在し第1の導電接続部12となる。同様に、第1基板2の他方電極接続配線11と第2基板3の他方電極延在配線16の導通接続部は、シール部材7の他辺部(右側辺部)に存在し第2の導電接続部13となる。   That is, the other electrode connection wiring 10 provided on the first substrate 2 between the drive element connection terminal 8 and the first conductive connection portion 12 is provided between the drive element connection terminal 8 and the second conductive connection portion 13. The other electrode connection wiring 11 provided on the first substrate 2 is formed by being distributed to the left and right in the drawing, and the other electrode extension wiring 15 extending to each side of the other electrode group 5 formed on the second substrate 3. The other electrode extended wiring 16 is electrically connected through the seal member 7. As shown in FIG. 2, the sealing member 7 is mixed with conductive particles 14 (such as particles plated with Au on the surface of the plastic particles), for example, the other electrode connection wiring 10 of the first substrate 2 and the second substrate 3. The other electrode extension wiring 15 is electrically connected. This conductive connection portion exists on the other side portion (left side portion) of the seal member 7 and becomes the first conductive connection portion 12. Similarly, the conductive connection portion of the other electrode connection wiring 11 of the first substrate 2 and the other electrode extension wiring 16 of the second substrate 3 exists in the other side portion (right side portion) of the seal member 7 and is the second conductive. It becomes the connection part 13.
そして第1の導電接続部12と第2導電接続部13はシール部材7の他辺部中央部(図面の上下方向の中心部)に寄せて配置している。そして、それぞれ第1の導電接続部12と第2導電接続部13とは図3に示すように、シール部材7の他辺部の中心であるブロック境界線17を越えて配置している。   And the 1st conductive connection part 12 and the 2nd conductive connection part 13 are arranged near the other side part center part (center part of the up-down direction of drawing) of the sealing member 7. FIG. Each of the first conductive connection portion 12 and the second conductive connection portion 13 is disposed beyond the block boundary line 17 that is the center of the other side of the seal member 7 as shown in FIG.
さらに第1基板2上の他方電極接続配線10及び他方電極接続配線11は、図5に示すように表示領域6とシール部材7が平行に在る部位で少なくとも一方が斜めに配線形成されており、シール部材7に平行な部分aより斜めに引き回された部位bの幅の方を太くしている。   Further, at least one of the other electrode connection wiring 10 and the other electrode connection wiring 11 on the first substrate 2 is formed obliquely at a portion where the display region 6 and the seal member 7 are in parallel as shown in FIG. The width of the portion b drawn obliquely from the portion a parallel to the seal member 7 is made thicker.
上記構成の液晶表示装置Aに対し、駆動素子を設けた液晶装置B、Cを図6と図7に示す。   FIG. 6 and FIG. 7 show liquid crystal devices B and C provided with a driving element for the liquid crystal display device A having the above-described configuration.
図6に示す液晶表示装置B2は、セグメント側とコモン側の出力機能を合わせもつ駆動素子(IC)18を第1基板2上に、COG(チップオンガラスChip On Glass)方式で直接実装している。そして外部配線基板19を駆動素子18に接続し、外部からコントロール信号を供給して駆動素子18を駆動させ、液晶表示する。   In the liquid crystal display device B2 shown in FIG. 6, a driving element (IC) 18 having both the segment side and common side output functions is directly mounted on the first substrate 2 by the COG (Chip On Glass) method. Yes. Then, the external wiring substrate 19 is connected to the driving element 18 and a control signal is supplied from the outside to drive the driving element 18 to display a liquid crystal.
図7に示す液晶表示装置Cはフィルムなどでもって構成したもの、すなわちTCP(テープキャリアパッケージTape Career Package)又はCOF(チップオンフィルムChip On Film)を用いて、液晶表示装置の端部に配設し、これらは第1基板2の接続端子8と異方性導電材料を介して圧着する。   The liquid crystal display device C shown in FIG. 7 is arranged at the end of the liquid crystal display device using a film or the like, that is, TCP (Tape Career Package) or COF (Chip On Film). These are crimped to the connection terminal 8 of the first substrate 2 via an anisotropic conductive material.
上記構成のような液晶表示装置B、Cによれば、導通部(第1の導電接続部12および第2導電接続部13)をシール部材7他辺部の中心部に寄せて配置することで従来に比べて、配線抵抗の最大値と最小値の差が小さくなる。   According to the liquid crystal display devices B and C having the above-described configuration, the conductive portions (the first conductive connection portion 12 and the second conductive connection portion 13) are arranged close to the central portion of the other side portion of the seal member 7. Compared to the conventional case, the difference between the maximum value and the minimum value of the wiring resistance is reduced.
本発明者がドットフォーマット128×160のカラー型の液晶表示装置Aを作製し、これら導通部12、13の位置をシール部材7他辺部の中心に、図3で第1の導電接続部12のΔC1を約1.5mm、第2の導電接続部13のΔC2を約2mm寄せて配置させて、駆動素子接続端子8から他方電極群5までの配線抵抗値を測定したところ、本発明の液晶表示装置Aは図13に示す本発明の結果が得られた。図13の横軸は液晶表示装置Aの表示領域6に対する駆動素子18の出力端子の番号(出力Noで他方電極群5の出力表示順を示す)であり、縦軸は他方電極5に掛かる配線抵抗値(Ω)である。   The inventor manufactured a color type liquid crystal display device A having a dot format of 128 × 160. The position of the conductive portions 12 and 13 is the center of the other side of the seal member 7 and the first conductive connection portion 12 in FIG. When the wiring resistance value from the drive element connection terminal 8 to the other electrode group 5 was measured by placing ΔC1 of about 1.5 mm and ΔC2 of the second conductive connecting portion 13 about 2 mm away, the liquid crystal of the present invention was measured. The result of the present invention shown in FIG. The horizontal axis in FIG. 13 is the number of the output terminal of the drive element 18 for the display area 6 of the liquid crystal display device A (output No. indicates the output display order of the other electrode group 5), and the vertical axis is the wiring applied to the other electrode 5. Resistance value (Ω).
比較例として、従来の液晶表示装置Xにおいては、導通部を他方電極5に対して延長線上に配置して配線抵抗値を測定したところ、図13に示すような従来技術の結果が得られた。   As a comparative example, in the conventional liquid crystal display device X, the conductive portion was placed on the extension line with respect to the other electrode 5 and the wiring resistance value was measured. As a result, the result of the prior art as shown in FIG. 13 was obtained. .
これらの結果から明らかなとおり、本発明の液晶表示装置Aは従来の液晶表示装置Xに比べ最小抵抗値(出力No.1)が高くなり、最大抵抗値(出力No.160)が低くなったことで、最大抵抗値(出力No.160)と最小抵抗値(出力No.1)との差が小さくなっていることがわかる。   As is clear from these results, the liquid crystal display device A of the present invention has a higher minimum resistance value (output No. 1) and a lower maximum resistance value (output No. 160) than the conventional liquid crystal display device X. This shows that the difference between the maximum resistance value (output No. 160) and the minimum resistance value (output No. 1) is small.
すなわち、導通部(第1の導電接続部12、第2の導電接続部13)をシール部材7の他辺中心部に寄せて配置する構成であり、図5のように、他方電極接続配線10、11は表示領域6とシール部材7間且つ第1の導電接続部12と第2の導電接続部13から駆動素子接続端子8の間で、シール部材7の配設方向に対し斜めに引き回し、その配線幅と配線長を調整することで、他方電極群5に接続する配線抵抗値および最大抵抗値と最小抵抗値の抵抗差を小さくすることができる。   In other words, the conductive portions (the first conductive connection portion 12 and the second conductive connection portion 13) are arranged close to the center of the other side of the seal member 7, and the other electrode connection wiring 10 is arranged as shown in FIG. , 11 between the display region 6 and the seal member 7 and between the first conductive connection portion 12 and the second conductive connection portion 13 and the drive element connection terminal 8 are obliquely routed with respect to the arrangement direction of the seal member 7, By adjusting the wiring width and wiring length, the wiring resistance value connected to the other electrode group 5 and the resistance difference between the maximum resistance value and the minimum resistance value can be reduced.
また他方電極群5を2ブロックに分割し、ブロック分割境界線17に隣接する他方電極に関しては、それに接続する他方電極接続配線10、11を同じ配線抵抗にすることにより、表示領域6内におけるブロック境界の配線抵抗差が無くなり、図13に示すようにスムーズな配線抵抗になるとともに、表示ムラのない表示品位が得られた。   Further, the other electrode group 5 is divided into two blocks, and the other electrode adjacent to the block division boundary line 17 has the same wiring resistance as the other electrode connection wirings 10 and 11 connected thereto, so that the blocks in the display area 6 are blocked. As shown in FIG. 13, the wiring resistance difference at the boundary disappeared and the wiring resistance was smooth, and display quality without display unevenness was obtained.
かくして本発明の液晶表示装置A,B,Cにおいては、表示ムラのない高い表示品位が得られた。   Thus, in the liquid crystal display devices A, B, and C of the present invention, high display quality without display unevenness was obtained.
特にカラー液晶表示においては、カラーの色彩が鮮鋭に表示されることから、表示ムラが色ムラとして顕著になるが、その点で本発明は、もっとも効果的である。   In particular, in color liquid crystal display, since color colors are sharply displayed, display unevenness becomes noticeable as color unevenness, but the present invention is most effective in that respect.
なお、本発明は上記実施形態例に限定されるものではなく、本発明の要旨を逸脱しない範囲内で種々の変更や改良等は何ら差し支えない。   It should be noted that the present invention is not limited to the above-described embodiment, and various modifications and improvements can be made without departing from the scope of the present invention.
たとえば、他方電極接続配線10,11をITO等の透明導電膜にて形成したが、これに代えてアルミニウムなどの金属膜によって一部もしくは全体に形成し、これによって配線抵抗を下げてもよい。   For example, although the other electrode connection wirings 10 and 11 are formed of a transparent conductive film such as ITO, the wiring resistance may be lowered by forming a part or the whole with a metal film such as aluminum instead.
本発明の液晶表示装置の平面図である。It is a top view of the liquid crystal display device of this invention. 図1に示す導電接続部の要部拡大図である。It is a principal part enlarged view of the electroconductive connection part shown in FIG. 本発明の液晶表示装置の第1基板に形成した概略配線を示す平面図である。It is a top view which shows the schematic wiring formed in the 1st board | substrate of the liquid crystal display device of this invention. 本発明の液晶表示装置の第2基板に形成した概略配線を示す平面図である。It is a top view which shows the schematic wiring formed in the 2nd board | substrate of the liquid crystal display device of this invention. 図1および図3に示す他方電極接続配線の部分拡大図である。It is the elements on larger scale of the other electrode connection wiring shown in FIG. 1 and FIG. 本発明の液晶表示装置の実施例の平面図である。It is a top view of the Example of the liquid crystal display device of this invention. 本発明の液晶表示装置の実施例の平面図である。It is a top view of the Example of the liquid crystal display device of this invention. 従来の液晶表示装置の平面図である。It is a top view of the conventional liquid crystal display device. 従来の液晶表示装置の第1基板に形成した概略配線を示す平面図である。It is a top view which shows the schematic wiring formed in the 1st board | substrate of the conventional liquid crystal display device. 従来の液晶表示装置の第2基板に形成した概略配線を示す平面図である。It is a top view which shows the schematic wiring formed in the 2nd board | substrate of the conventional liquid crystal display device. 従来の液晶表示装置の実施例の平面図である。It is a top view of the Example of the conventional liquid crystal display device. 従来の液晶表示装置の実施例の平面図である。It is a top view of the Example of the conventional liquid crystal display device. 本発明の液晶表示装置における他方電極群に接続する配線抵抗の変化を示す特性図である。It is a characteristic view which shows the change of the wiring resistance connected to the other electrode group in the liquid crystal display device of this invention.
符号の説明Explanation of symbols
A〜C・・・液晶表示装置
X〜Z・・・液晶表示装置
2 ・・・・第1基板
3 ・・・・第2基板
4 ・・・・一方電極
5 ・・・・他方電極
6 ・・・・表示部
7 ・・・・シール部材
8 ・・・・駆動素子接続端子
9 ・・・・一方電極接続配線
10 ・・・他方電極接続配線
11・・・他方電極接続配線
12 ・・・第1の導通接続部
13 ・・・第2の導通接続部
14 ・・・導電性粒子
15、16 ・・・他方電極延在配線
17 ・・・シール部材の他辺中心部
A to C: Liquid crystal display devices X to Z: Liquid crystal display device 2 ... First substrate 3 ... Second substrate 4 ... One electrode 5 ... Other electrode 6 Display unit 7 Seal member 8 Drive element connection terminal 9 One electrode connection wiring 10 Other electrode connection wiring 11 Other electrode connection wiring 12 1st conduction | electrical_connection connection part 13 ... 2nd conduction | electrical_connection connection part 14 ... Electroconductive particle 15, 16 ... Other electrode extension wiring 17 ... Center part of the other side of a sealing member

Claims (3)

  1. 一方方向に延びる一方電極群と配向膜とを順次積層してなる第1基板と、前記一方方向と直交する他方方向に延びる他方電極群と配向膜とを順次積層して成る第2基板とを、前記両電極群が直交するように対向させて、前記いずれか一方の基板の周囲で多数の導電性粒子を含有するシール部材を介して貼り合わせ、該シール部材の内側に液晶を充填して成るとともに、
    第1基板上に形成した一方電極群は、その一端がシール部材の一辺部を通して延在した一方電極接続配線を有し、且つ第2基板上に形成した他方電極群は、その一端がシール部材の他辺部に到達する他方電極延在配線を有するとともに、
    前記第1基板上に、前記シール部材の他辺部から表示領域と該シール部材の他辺部との間の領域、シール部材の一辺部を介して延在せしめた他方電極接続配線を有し、且つ前記シール部材の他辺部に含有する導電粒子によって前記第2基板の他方電極延在配線と前記第1基板の他方電極接続配線とを通電せしめる導電接続部を構成した液晶表示装置において、
    前記第2基板の他方電極群、他方電極延在配線及び第1基板の他方電極接続配線をそれぞれ2つのブロックに分割するとともに、分割した一方のブロック側の他方電極延在配線と他方電極接続配線とを前記シール部材の一対の他辺部の一方側の第1の導通接続部で接続させ、且つ他方のブロック側の他方電極延在配線と他方電極接続配線とを前記シール部材の一対の他辺部の他方側の第2の導通接続部で接続させるとともに、
    第1の導電接続部と第2の導電接続部とを、互いに対向するシール部材の他辺部の中心部に寄せて配置したことを特徴とする液晶表示装置。
    A first substrate formed by sequentially stacking one electrode group extending in one direction and an alignment film; and a second substrate formed by sequentially stacking the other electrode group extending in the other direction orthogonal to the one direction and the alignment film. The two electrode groups are opposed to each other so as to be orthogonal to each other, and bonded around a sealing member containing a large number of conductive particles around one of the substrates, and liquid crystal is filled inside the sealing member. As
    The one electrode group formed on the first substrate has one electrode connection wiring whose one end extends through one side of the seal member, and the other electrode group formed on the second substrate has one end of the seal member While having the other electrode extension wiring that reaches the other side of the
    On the first substrate, the other electrode connection wiring extended from the other side of the seal member to the display region and the other side of the seal member via one side of the seal member. In addition, in the liquid crystal display device configured with the conductive connection portion for energizing the other electrode extension wiring of the second substrate and the other electrode connection wiring of the first substrate by the conductive particles contained in the other side portion of the seal member,
    The other electrode group of the second substrate, the other electrode extension wiring, and the other electrode connection wiring of the first substrate are each divided into two blocks, and the other electrode extension wiring and the other electrode connection wiring on one of the divided blocks are divided. And the other electrode extension wiring and the other electrode connection wiring on the other block side are connected to each other in the pair of other sides of the seal member. While connecting at the second conductive connection on the other side of the side,
    A liquid crystal display device, wherein the first conductive connection portion and the second conductive connection portion are arranged close to a central portion of the other side portion of the seal member facing each other.
  2. 前記2ブロック分割境界を挟んで隣接しあう他方電極は、その電極に接続する他方電極接続延在配線及び他方電極接続配線は、実質的に同一配線抵抗に設定されていることを特徴とする請求項1に記載の液晶表示装置。 The other electrode adjacent to each other across the two-block division boundary is configured such that the other electrode connection extension wiring and the other electrode connection wiring connected to the electrode are set to substantially the same wiring resistance. Item 2. A liquid crystal display device according to item 1.
  3. 前記他方電極接続配線は、表示領域と該シール部材の他辺部との間の領域において、シール部材の配設方向に対し斜めに引き回された部位を有することを特徴とする請求項1記載の液晶表示装置。 The said other electrode connection wiring has the site | part drawn around with respect to the arrangement | positioning direction of a sealing member in the area | region between a display area and the other side part of this sealing member. Liquid crystal display device.
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11326933A (en) * 1998-05-19 1999-11-26 Hitachi Device Eng Co Ltd Liquid crystal display device
JP2002148654A (en) * 2000-11-14 2002-05-22 Seiko Epson Corp Liquid crystal display device
JP2002169487A (en) * 2000-09-22 2002-06-14 Seiko Epson Corp Electro-optic device and electronic appliance
JP2003029289A (en) * 2001-07-13 2003-01-29 Seiko Epson Corp Liquid crystal device, manufacturing method therefor, and electronic equipment
JP2003161958A (en) * 2001-11-27 2003-06-06 Kyocera Corp Liquid crystal display device and portable terminal or display instrument in which the liquid crystal display device is disposed
JP2005107506A (en) * 2003-09-09 2005-04-21 Citizen Watch Co Ltd Display device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11326933A (en) * 1998-05-19 1999-11-26 Hitachi Device Eng Co Ltd Liquid crystal display device
JP2002169487A (en) * 2000-09-22 2002-06-14 Seiko Epson Corp Electro-optic device and electronic appliance
JP2002148654A (en) * 2000-11-14 2002-05-22 Seiko Epson Corp Liquid crystal display device
JP2003029289A (en) * 2001-07-13 2003-01-29 Seiko Epson Corp Liquid crystal device, manufacturing method therefor, and electronic equipment
JP2003161958A (en) * 2001-11-27 2003-06-06 Kyocera Corp Liquid crystal display device and portable terminal or display instrument in which the liquid crystal display device is disposed
JP2005107506A (en) * 2003-09-09 2005-04-21 Citizen Watch Co Ltd Display device

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