JPH10301138A - Liquid crystal display device - Google Patents
Liquid crystal display deviceInfo
- Publication number
- JPH10301138A JPH10301138A JP12335097A JP12335097A JPH10301138A JP H10301138 A JPH10301138 A JP H10301138A JP 12335097 A JP12335097 A JP 12335097A JP 12335097 A JP12335097 A JP 12335097A JP H10301138 A JPH10301138 A JP H10301138A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- terminal group
- circuit board
- drive circuit
- control bus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0266—Marks, test patterns or identification means
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/11—Printed elements for providing electric connections to or between printed circuits
- H05K1/117—Pads along the edge of rigid circuit boards, e.g. for pluggable connectors
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/36—Assembling printed circuits with other printed circuits
- H05K3/361—Assembling flexible printed circuits with other printed circuits
Landscapes
- Liquid Crystal (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は液晶表示装置に関
し、さらに詳しく言えば、液晶表示パネルに表示信号を
供給するＴＡＢ型駆動回路基板および同駆動回路基板に
接続される制御バス基板を有する液晶表示装置に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display, and more particularly, to a liquid crystal display having a TAB type driving circuit board for supplying a display signal to a liquid crystal display panel and a control bus board connected to the driving circuit board. It concerns the device.
【０００２】[0002]
【従来の技術】液晶ディスプレイの大画面化、高精細化
に伴なって、その駆動回路の実装技術もより一層の高密
度化が要求され、例えば１０インチクラスのパソコン用
カラーディスプレイの場合、４８０本の走査線を順次駆
動しようとすると、走査電極側は４８０本を、信号電極
側は１９２０本を抵抗のばらつきを小さく抑えながら接
続しなければならない、という課題が課せられる。2. Description of the Related Art As a liquid crystal display has a larger screen and higher definition, the mounting technology of its driving circuit is required to have higher density. For example, in the case of a 10-inch class color display for a personal computer, 480 pixels are required. In order to sequentially drive the scanning lines, there is a problem that 480 scanning electrodes must be connected on the scanning electrode side and 1920 electrodes on the signal electrode side must be connected while suppressing variations in resistance.
【０００３】このため、液晶駆動用電子部品（ＩＣ）を
駆動回路基板としての精細な配線パターンが形成された
フレキシブル回路基板に実装するＴＡＢ（Ｔａｐｅ Ａ
ｕｔｏｍａｔｅｄ Ｂｏｎｄｉｎｇ）形式とし、その駆
動回路基板を液晶表示パネルの入力端子群に接続する方
法がとられ、その一例が図４に示されている。[0003] For this reason, TAB (Tape A) in which a liquid crystal driving electronic component (IC) is mounted on a flexible circuit board on which a fine wiring pattern is formed as a driving circuit board.
In this case, the driving circuit board is connected to an input terminal group of a liquid crystal display panel, and an example thereof is shown in FIG.
【０００４】すなわち、所定の配線パターンが形成され
たフィルム上に液晶駆動信号を発生するＩＣ２を実装し
て駆動回路基板３とし、その一方の端縁側の表示信号出
力端子群を液晶表示パネル１の表示信号入力端子群に接
続するとともに、駆動回路基板３の他方の端縁側にある
制御信号入力端子群に制御バス基板４の制御信号出力端
子群を接続するようにしている。That is, an IC 2 for generating a liquid crystal drive signal is mounted on a film on which a predetermined wiring pattern is formed to form a drive circuit board 3, and a display signal output terminal group on one edge side of the drive circuit board 3 is used for the liquid crystal display panel 1. In addition to the connection to the display signal input terminal group, the control signal output terminal group of the control bus board 4 is connected to the control signal input terminal group on the other edge side of the drive circuit board 3.
【０００５】駆動回路基板３の制御信号入力端子群と制
御バス基板４の制御信号出力端子群とを接続するにあた
って、古くはハンダにより接続していたが、これによる
と端子の極小幅での自動接続が困難であるばかりか、そ
のハンダに含まれる鉛成分に起因する環境汚染の問題が
クローズアップされ、他の接続手段への変更を余儀なく
された。When connecting the control signal input terminal group of the drive circuit board 3 and the control signal output terminal group of the control bus board 4 in the past, they were connected by soldering. Not only was the connection difficult, but also the problem of environmental pollution caused by the lead component contained in the solder was highlighted and forced to change to other connection means.
【０００６】[0006]
【発明が解決しようとする課題】そこで、駆動回路基板
３の制御信号入力端子群と制御バス基板４の制御信号出
力端子群とを、膜厚方向のみに導電性を示す異方性導電
膜を用いてその端子群同士を接続することが提案されて
いるが、駆動回路基板３の制御信号入力端子群と制御バ
ス基板４の制御信号出力端子群は、異方性導電膜を挟ん
で向かい合わせとなるため、それら端子群同士の位置合
わせが難しいという問題があった。Therefore, the control signal input terminal group of the drive circuit board 3 and the control signal output terminal group of the control bus board 4 are connected by an anisotropic conductive film having conductivity only in the film thickness direction. It has been proposed to connect the terminal groups using a control signal input terminal group of the drive circuit board 3 and a control signal output terminal group of the control bus board 4 with an anisotropic conductive film interposed therebetween. Therefore, there is a problem that it is difficult to align the terminal groups.
【０００７】なお、それら端子群同士の位置合わせ状態
を目視可能とするには、例えば駆動回路基板３の接続部
にスリット状の開口部を形成すればよいのであるが、こ
のようにするとその部分が機械的に脆弱となり、接続部
の信頼性が低下してしまうので、好ましくない。In order to make it possible to visually check the alignment between the terminal groups, for example, a slit-shaped opening may be formed in the connection portion of the drive circuit board 3. Is mechanically fragile, and the reliability of the connection is reduced, which is not preferable.
【０００８】本発明は、上記従来の問題点を解決するた
めになされたもので、その目的は、駆動回路基板の制御
信号入力端子群と制御バス基板の制御信号出力端子群と
を異方性導電膜を介して接続するにあたって、それら端
子群同士の位置合わせを容易に行なうことができる液晶
表示装置を提供することにある。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems. It is an object of the present invention to provide a control signal input terminal group of a drive circuit board and a control signal output terminal group of a control bus board. It is an object of the present invention to provide a liquid crystal display device which can easily perform alignment between the terminal groups when connecting via a conductive film.
【０００９】[0009]
【課題を解決するための手段】上記目的を達成するた
め、本発明は、一方の面に透明電極が形成された一対の
透明基板をそれら透明電極同士を対向させシール材を介
して張り合わせ、その内部に形成されたセル内に液晶を
封入してなる液晶表示パネルと、液晶駆動用電子部品が
実装されているとともに、一方の端縁側に上記液晶表示
パネルの表示信号入力端子群に接続される表示信号出力
端子群を備え、他方の端縁側に上記電子部品に対する制
御信号入力端子群が形成された駆動回路基板と、その制
御信号入力端子群に対して膜厚方向にのみ導電性を有す
る異方性導電膜を介して電気的に接続される制御信号出
力端子群を有する制御バス基板とを備えている液晶表示
装置において、上記制御バス基板と上記駆動回路基板の
各端子群形成面側には、位置合わせ用のダミー電極がそ
れぞれ形成されているとともに、上記駆動回路基板には
そのダミー電極の一部分を反端子群形成面側、すなわち
端子群が形成されている側とは反対側の面に露出させる
開口部が設けられていることを特徴としている。In order to achieve the above-mentioned object, the present invention provides a pair of transparent substrates each having a transparent electrode formed on one surface thereof, with the transparent electrodes facing each other, and bonding them together via a sealing material. A liquid crystal display panel in which liquid crystal is sealed in a cell formed therein, and a liquid crystal driving electronic component are mounted, and one end side is connected to a display signal input terminal group of the liquid crystal display panel. A drive circuit board including a display signal output terminal group and a control signal input terminal group for the electronic component formed on the other edge side; and a drive circuit board having conductivity only in the film thickness direction with respect to the control signal input terminal group. In a liquid crystal display device including a control bus substrate having a control signal output terminal group electrically connected through an isotropic conductive film, the control bus substrate and the drive circuit substrate have respective terminal group forming surfaces. A dummy electrode for alignment is formed, and a part of the dummy electrode is formed on the drive circuit board on the side opposite to the terminal group forming surface, that is, on the surface opposite to the side on which the terminal group is formed. An opening to be exposed is provided.
【００１０】この構成によれば、異方性導電膜を挟んで
駆動回路基板と制御バス基板とを重ね合わせて接続する
際、それらのダミー電極同士の重なり具合を開口部をと
おして直接的に視認することができ、各基板の端子群同
士の正確な位置合わせが可能となる。According to this configuration, when the drive circuit board and the control bus board are connected to each other with the anisotropic conductive film interposed therebetween, the degree of overlap between the dummy electrodes is directly determined through the opening. It can be visually recognized, and accurate positioning of the terminal groups of each substrate can be performed.
【００１１】上記制御バス基板側のダミー電極の幅をＷ
１、上記駆動回路基板側のダミー電極の幅をＷ２とする
とき、Ｗ１＞Ｗ２とすることにより、駆動回路基板側か
ら観察した際、位置合わせのずれ量をより的確に把握す
ることができる。The width of the dummy electrode on the control bus board side is W
1. When the width of the dummy electrode on the drive circuit board side is W2, by setting W1> W2, it is possible to more accurately grasp the amount of misalignment when observed from the drive circuit board side.
【００１２】[0012]
【発明の実施の形態】次に、本発明の技術的思想をより
よく理解する上で、図１ないし図３を参照しながら、そ
の実施の形態について説明する。なお、これらの図には
駆動回路基板３と制御バス基板４の各接続部のみが示さ
れており、その他の構成については先に説明した図４を
参照されたい。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, in order to better understand the technical concept of the present invention, an embodiment will be described with reference to FIGS. In these figures, only the respective connection portions between the drive circuit board 3 and the control bus board 4 are shown, and for other configurations, refer to FIG. 4 described above.
【００１３】すなわち、この液晶表示装置は、液晶表示
パネル１と、液晶駆動用電子部品であるＩＣ２が実装さ
れ、同ＩＣ２より液晶表示パネル１に表示信号を与える
フレキブル基板からなる駆動回路基板２と、同駆動回路
基板２に接続される制御バス基板４とを備えている。That is, in this liquid crystal display device, a liquid crystal display panel 1 and a driving circuit board 2 formed of a flexible substrate on which an IC 2 as a liquid crystal driving electronic component is mounted and which supplies a display signal to the liquid crystal display panel 1 from the IC 2 And a control bus board 4 connected to the drive circuit board 2.
【００１４】この実施例において、液晶表示パネル１に
は、透明電極上に配向膜層を形成した２枚のガラス基板
を、その配向膜層の配向方向の交叉角が２４０゜となる
ように対向させ、その間に旋光性物質を含有し、誘電率
異方性が正のネマティック液晶組成物を封入した後、ガ
ラス基板の両側に偏光板を配置してなり、１フレームご
とに極性を反転させる電圧平均化法で駆動されるスーパ
ーツイストネマティック（ＳＴＮ）型液晶表示素子が用
いられている。In this embodiment, the liquid crystal display panel 1 has two glass substrates, each having an alignment film layer formed on a transparent electrode, facing each other such that the crossing angle of the alignment direction of the alignment film layer is 240 °. In the meantime, a nematic liquid crystal composition containing a rotatory substance and having a positive dielectric anisotropy is enclosed therein, and then a polarizing plate is disposed on both sides of the glass substrate. A super twisted nematic (STN) liquid crystal display element driven by an averaging method is used.
【００１５】図１には、制御バス基板４の接続端子部の
構成が示されており、同接続端子部には駆動回路基板３
に各種の制御信号を供給するための制御信号出力端子群
６が形成されている。この実施例において、制御信号出
力端子群６は所定の間隔で多数配列された短冊状の接続
電極６１を含んでいる。そして、この制御信号出力端子
群６とは別に、その両側の位置に位置合わせ用の第１ダ
ミー電極５，５が形成されている。FIG. 1 shows a configuration of a connection terminal portion of the control bus board 4.
And a control signal output terminal group 6 for supplying various control signals to the control signal output terminal. In this embodiment, the control signal output terminal group 6 includes a large number of strip-shaped connection electrodes 61 arranged at predetermined intervals. In addition to the control signal output terminal group 6, first dummy electrodes 5 for alignment are formed at positions on both sides thereof.
【００１６】この実施例によると、第１ダミー電極５，
５は同一パターンであるため、その一方について説明す
ると、この第１ダミー電極５は上記接続電極６１と同一
形状とされた例えば４つの短冊電極５１を備えている
が、この場合、制御信号出力端子群６の接続電極６１と
の識別を容易にするため、および水平方向のみならず垂
直方向のずれ量をも目視にて検出可能とするため、４つ
の短冊電極５１の中央部分は共通のベタ塗りパターン５
２とされている。According to this embodiment, the first dummy electrode 5,
The first dummy electrode 5 has, for example, four strip electrodes 51 having the same shape as that of the connection electrode 61. In this case, the control signal output terminal In order to make it easy to identify the connection electrodes 61 of the group 6 and to detect the amount of displacement not only in the horizontal direction but also in the vertical direction, the central portion of the four strip electrodes 51 has a common solid color. Pattern 5
It is 2.
【００１７】図２には、駆動回路基板３の接続端子部の
構成が示されており、同接続端子部には制御バス基板４
の制御信号出力端子群６に対応する制御信号入力端子群
８が形成されている。この制御信号入力端子群８も制御
信号出力端子群６と同じく、所定の間隔で多数配列され
た短冊状の接続電極８１を含んでおり、同制御信号入力
端子群８の両側位置には第１ダミー電極５，５と対応す
る第２ダミー電極７，７が設けられている。FIG. 2 shows the structure of the connection terminal portion of the drive circuit board 3.
A control signal input terminal group 8 corresponding to the control signal output terminal group 6 is formed. Like the control signal output terminal group 6, the control signal input terminal group 8 also includes a large number of strip-shaped connection electrodes 81 arranged at predetermined intervals. Second dummy electrodes 7, 7 corresponding to the dummy electrodes 5, 5 are provided.
【００１８】第２ダミー電極７，７も同一構成であるた
め、その一方について説明すると、この第２ダミー電極
７は、上記接続電極８１と同一形状とされた例えば４つ
の短冊電極７１を備えている。そして、この駆動回路基
板３には、各短冊電極７１の中央部分を反端子群形成面
側に露出させるための開口部９が形成されている。Since the second dummy electrodes 7 and 7 have the same configuration, one of them will be described. The second dummy electrode 7 includes, for example, four strip electrodes 71 having the same shape as the connection electrode 81. I have. The drive circuit board 3 has an opening 9 for exposing the central portion of each strip electrode 71 on the side opposite to the terminal group formation surface.
【００１９】なお、図２は駆動回路基板３の接続端子部
の平面図であり、制御信号入力端子群８および第２ダミ
ー電極７，７は駆動回路基板３の下面（底面）側に設け
られている関係上鎖線で示されている。すなわち、図２
において、駆動回路基板３の下面側が端子群形成面であ
り、その上面が反端子群形成面側で、したがって開口部
９により露出されている各短冊電極７１の中央部分は実
線で示されている。FIG. 2 is a plan view of the connection terminal portion of the drive circuit board 3. The control signal input terminal group 8 and the second dummy electrodes 7, 7 are provided on the lower surface (bottom surface) of the drive circuit board 3. Are indicated by chain lines. That is, FIG.
In the figure, the lower surface side of the drive circuit board 3 is the terminal group formation surface, and the upper surface is the opposite terminal group formation surface, and therefore, the central portion of each strip electrode 71 exposed by the opening 9 is shown by a solid line. .
【００２０】ここで、第１ダミー電極５の短冊電極５１
の幅をＷ１、第２ダミー電極７の短冊電極７１の幅をＷ
２とすると、Ｗ１＞Ｗ２なる関係とされている。Here, the strip electrode 51 of the first dummy electrode 5
Is W1 and the width of the strip electrode 71 of the second dummy electrode 7 is W1.
Assuming that 2, W1> W2.
【００２１】図３には制御バス基板４の接続部（図１）
上に、駆動回路基板３の下面側に設けられている接続部
（図２）を図示されていない膜厚方向のみに導電性を有
する異方性導電膜を介して重ね合わせた状態が例示され
ている。FIG. 3 shows a connection portion of the control bus board 4 (FIG. 1).
Above, a state is illustrated in which connection portions (FIG. 2) provided on the lower surface side of the drive circuit board 3 are overlapped via an anisotropic conductive film having conductivity only in a thickness direction (not shown). ing.
【００２２】この重ね合わせに際して、第１ダミー電極
５の各短冊電極５１と第２ダミー電極７の各短冊電極７
１との重なり度合いを観察することにより、制御バス基
板４の制御信号出力端子群６と駆動回路基板３の制御信
号入力端子群８の位置合わせが適正かどうかを判定する
ことができる。At the time of this superposition, each strip electrode 51 of the first dummy electrode 5 and each strip electrode 7 of the second dummy electrode 7
By observing the degree of overlap with 1, it is possible to determine whether the alignment between the control signal output terminal group 6 of the control bus board 4 and the control signal input terminal group 8 of the drive circuit board 3 is appropriate.
【００２３】駆動回路基板３は透明なフレキシブル基板
からなるため、この観察は駆動回路基板３側から行なわ
れるが、第１ダミー電極５の短冊電極５１の幅Ｗ１が第
２ダミー電極７の短冊電極７１の幅Ｗ２よりも大きくさ
れていることから、両短冊電極５１，７１間のずれ量も
容易に知ることができる。Since the drive circuit board 3 is made of a transparent flexible board, this observation is performed from the drive circuit board 3 side. However, the width W1 of the strip electrode 51 of the first dummy electrode 5 is equal to the width of the strip electrode of the second dummy electrode 7. Since the width W2 of the electrode 71 is larger than the width W2, the amount of displacement between the strip electrodes 51 and 71 can be easily known.
【００２４】また、第１ダミー電極５の中央にあるベタ
塗りパターン５２の位置を観察することにより、垂直方
向のずれ量も容易に知ることができる。Further, by observing the position of the solid coating pattern 52 at the center of the first dummy electrode 5, the amount of displacement in the vertical direction can be easily known.
【００２５】この実施例においては、駆動回路基板３に
は上記した開口部９が設けられているため、両短冊電極
５１，７１の重なり度合いがより明確に分かる。なお、
開口部９は駆動回路基板３の透明度が低いか、もしくは
駆動回路基板３が不透明である場合に有効であるが、駆
動回路基板３の透明度が高い場合には省いてもよい。In this embodiment, since the above-mentioned opening 9 is provided in the drive circuit board 3, the degree of overlap between the strip electrodes 51 and 71 can be more clearly understood. In addition,
The opening 9 is effective when the transparency of the drive circuit board 3 is low or when the drive circuit board 3 is opaque, but may be omitted when the transparency of the drive circuit board 3 is high.
【００２６】端子群６，８の各接続電極６１，８１およ
びダミー電極５，７の各短冊電極５１，７１の中心間ピ
ッチを０．４ｍｍに設計し、各短冊電極５１，７１にて
位置合わせを行なって、駆動回路基板３と制御バス基板
４とを異方性導電膜を介して接続した後、各接続電極６
１，８１間の接続抵抗を測定したところ、問題がないこ
とが確認された。また、上記中心間ピッチを０．２ｍｍ
とした場合にも、同様に問題がないことが確認された。The pitch between the centers of the connection electrodes 61 and 81 of the terminal groups 6 and 8 and the strip electrodes 51 and 71 of the dummy electrodes 5 and 7 is designed to be 0.4 mm, and the positioning is performed by the strip electrodes 51 and 71. Is performed to connect the drive circuit board 3 and the control bus board 4 via the anisotropic conductive film.
Measurement of the connection resistance between 1 and 81 confirmed that there was no problem. The center-to-center pitch is 0.2 mm
It was also confirmed that there was no problem.
【００２７】なお、上記実施例では、制御バス基板４と
駆動回路基板３とに、それぞれ２組のダミー電極５，
５；７，７を設けているが、その一方の組のダミー電極
５，７を省略してもよく、場合によっては３組以上とし
てもよい。また、ダミー電極のパターン形状も上記実施
例の図面に示されている形状に限定されるものではな
く、任意の形状が選択可能である。In the above embodiment, the control bus board 4 and the drive circuit board 3 are provided with two sets of dummy electrodes 5 and 5, respectively.
5; 7, 7 are provided, but one set of the dummy electrodes 5, 7 may be omitted, and in some cases, three or more sets may be provided. Further, the pattern shape of the dummy electrode is not limited to the shape shown in the drawings of the above-described embodiment, and an arbitrary shape can be selected.
【００２８】また、ダミー電極５，７の短冊状電極５
１，７１は同一ピッチとされるが、この各短冊状電極５
１，７１のピッチは、必ずしも接続端子群６１，８１の
ピッチと同一である必要はない。The strip electrodes 5 of the dummy electrodes 5 and 7
1 and 71 have the same pitch.
The pitch between the connection terminals 1 and 71 does not necessarily have to be the same as the pitch between the connection terminal groups 61 and 81.
【００２９】[0029]
【発明の効果】以上説明したように、本発明によれば、
異方性導電膜を挟んで駆動回路基板と制御バス基板とを
重ね合わせて接続する際、各基板に設けられているダミ
ー電極により、それらの端子群間のずれ量チェックを行
なうことができるとともに、そのダミー電極を指標とし
て端子群同士の位置合わせを容易に行なうことが可能と
なる。As described above, according to the present invention,
When the drive circuit board and the control bus board are connected to each other with the anisotropic conductive film interposed therebetween, it is possible to check the amount of displacement between the terminal groups by using the dummy electrodes provided on each board. The terminal groups can be easily aligned using the dummy electrodes as indices.
【００３０】また、制御バス基板側のダミー電極の幅を
駆動回路基板側のダミー電極の幅よりも大きくすること
により、駆動回路基板側から観察した際、位置合わせの
ずれ量をより的確に把握することができる。Further, by making the width of the dummy electrode on the control bus board side larger than the width of the dummy electrode on the drive circuit board side, when observing from the drive circuit board side, the amount of misalignment can be grasped more accurately. can do.
【００３１】さらに、駆動回路基板に、そのダミー電極
の一部分を反端子群形成面側、すなわち端子群が形成さ
れている側とは反対側の面に露出させる開口部を設けた
ことにより、ダミー電極同士の重なり具合をその開口部
をとおして直接的に視認することができ、より精度の高
い位置合わせが可能となる。Further, the drive circuit board is provided with an opening for exposing a part of the dummy electrode on the side opposite to the terminal group forming surface, that is, on the surface opposite to the side on which the terminal group is formed. The degree of overlap between the electrodes can be directly visually recognized through the opening, and more accurate positioning can be performed.
【図１】本発明の液晶表示装置に用いられる制御バス基
板側の接続部の構成例を示した平面図。FIG. 1 is a plan view showing a configuration example of a connection portion on a control bus board side used in a liquid crystal display device of the present invention.
【図２】図１の制御バス基板側の接続部に対応する駆動
回路基板側の接続部の構成例を示した平面図。FIG. 2 is a plan view showing a configuration example of a connection section on a drive circuit board side corresponding to a connection section on a control bus board side in FIG. 1;
【図３】上記制御バス基板側の接続部と上記駆動回路基
板側の接続部とを接続した状態を示した平面図。FIG. 3 is a plan view showing a state where a connection portion on the control bus board side and a connection portion on the drive circuit board side are connected;
【図４】ＴＡＢ型駆動回路基板を備えた液晶表示装置の
従来例を説明するための平面図。FIG. 4 is a plan view for explaining a conventional example of a liquid crystal display device provided with a TAB type driving circuit board.
１ 液晶表示パネル ２ 液晶駆動用電子部品（ＩＣ） ３ 駆動回路基板 ４ 制御バス基板 ５ 位置合わせ用第１ダミー電極 ５１ 短冊電極 ５２ ベタ塗りパターン ６ 制御信号出力端子群 ６１ 接続電極 ７ 位置合わせ用第２ダミー電極 ７１ 短冊電極 ８ 制御信号入力端子群 ８１ 接続電極 ９ 開口部 REFERENCE SIGNS LIST 1 liquid crystal display panel 2 liquid crystal drive electronic component (IC) 3 drive circuit board 4 control bus board 5 first alignment dummy electrode 51 strip electrode 52 solid pattern 6 control signal output terminal group 61 connection electrode 7 alignment first 2 Dummy electrode 71 Strip electrode 8 Control signal input terminal group 81 Connection electrode 9 Opening
Claims (2)
透明基板をそれら透明電極同士を対向させシール材を介
して張り合わせ、その内部に形成されたセル内に液晶を
封入してなる液晶表示パネルと、液晶駆動用電子部品が
実装されているとともに、一方の端縁側に上記液晶表示
パネルの表示信号入力端子群に接続される表示信号出力
端子群を備え、他方の端縁側に上記電子部品に対する制
御信号入力端子群が形成された駆動回路基板と、その制
御信号入力端子群に対して膜厚方向にのみ導電性を有す
る異方性導電膜を介して電気的に接続される制御信号出
力端子群を有する制御バス基板とを備えている液晶表示
装置において、上記制御バス基板と上記駆動回路基板の
各端子群形成面側には、位置合わせ用のダミー電極がそ
れぞれ形成されているとともに、上記駆動回路基板には
そのダミー電極の一部分を反端子群形成面側に露出させ
る開口部が設けられていることを特徴とする液晶表示装
置。1. A liquid crystal comprising a pair of transparent substrates each having a transparent electrode formed on one surface thereof, bonded to each other via a sealing material with the transparent electrodes facing each other, and enclosing a liquid crystal in a cell formed therein. A display panel and electronic components for driving liquid crystal are mounted, and a display signal output terminal group connected to a display signal input terminal group of the liquid crystal display panel is provided on one edge side, and the electronic component is provided on the other edge side. A drive circuit board on which a control signal input terminal group for a component is formed, and a control signal electrically connected to the control signal input terminal group via an anisotropic conductive film having conductivity only in a film thickness direction. In a liquid crystal display device including a control bus board having an output terminal group, a dummy electrode for positioning is formed on each of the terminal group forming surfaces of the control bus board and the drive circuit board. And a drive circuit board provided with an opening for exposing a part of the dummy electrode on the side opposite to the terminal group formation surface.
Ｗ１、上記駆動回路基板側のダミー電極の幅をＷ２とす
るとき、Ｗ１＞Ｗ２である請求項１に記載の液晶表示装
置。2. The liquid crystal display device according to claim 1, wherein W1> W2, where W1 is the width of the dummy electrode on the control bus board side and W2 is the width of the dummy electrode on the drive circuit board side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12335097A JP3734194B2 (en) | 1997-04-25 | 1997-04-25 | Liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12335097A JP3734194B2 (en) | 1997-04-25 | 1997-04-25 | Liquid crystal display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10301138A true JPH10301138A (en) | 1998-11-13 |
| JP3734194B2 JP3734194B2 (en) | 2006-01-11 |
Family
ID=14858401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12335097A Expired - Fee Related JP3734194B2 (en) | 1997-04-25 | 1997-04-25 | Liquid crystal display |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3734194B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100544254B1 (en) * | 2002-01-16 | 2006-01-23 | 샤프 가부시키가이샤 | Circuit board connection structure, method for forming the same, and display device having the circuit board connection structure |
| US7012814B2 (en) | 2002-03-22 | 2006-03-14 | Sharp Kabushiki Kaisha | Circuit board connection structure, method for forming the same, and display device having the circuit board connection structure |
| JP2009271383A (en) * | 2008-05-09 | 2009-11-19 | Funai Electric Co Ltd | Liquid crystal display device, and method of manufacturing the same |
| JP2018088738A (en) * | 2016-11-28 | 2018-06-07 | 株式会社Ｇｓユアサ | Power supply device |
-
1997
- 1997-04-25 JP JP12335097A patent/JP3734194B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100544254B1 (en) * | 2002-01-16 | 2006-01-23 | 샤프 가부시키가이샤 | Circuit board connection structure, method for forming the same, and display device having the circuit board connection structure |
| US7012814B2 (en) | 2002-03-22 | 2006-03-14 | Sharp Kabushiki Kaisha | Circuit board connection structure, method for forming the same, and display device having the circuit board connection structure |
| JP2009271383A (en) * | 2008-05-09 | 2009-11-19 | Funai Electric Co Ltd | Liquid crystal display device, and method of manufacturing the same |
| JP2018088738A (en) * | 2016-11-28 | 2018-06-07 | 株式会社Ｇｓユアサ | Power supply device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3734194B2 (en) | 2006-01-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5274564B2 (en) | Flexible substrate and electric circuit structure | |
| JP3785821B2 (en) | Liquid crystal display panel inspection apparatus and inspection method | |
| JP2002090424A (en) | Matrix array board | |
| KR100293982B1 (en) | LCD panel | |
| JP3202525B2 (en) | Electric circuit board and display device having the same | |
| KR100909417B1 (en) | Pad structure for inspection of liquid crystal display panel | |
| JPH0682802A (en) | Liquid crystal display device | |
| JP3734194B2 (en) | Liquid crystal display | |
| JPH10301137A (en) | Liquid crystal display device | |
| US8975756B2 (en) | Electric terminal device and method of connecting the same | |
| JP3365305B2 (en) | Semiconductor chip, its mounting structure and liquid crystal display device | |
| KR101394920B1 (en) | Chip on glass type liquid crystal display device | |
| EP0762137A2 (en) | Liquid crystal display and testing method thereof | |
| JPH11223829A (en) | Liquid crystal device | |
| JP3897484B2 (en) | Wiring board lead terminal structure | |
| JPH0643473A (en) | Liquid crystal display device | |
| JPH0443327A (en) | Liquid crystal display device | |
| JP3954152B2 (en) | Connection structure of panel substrate and flexible wiring board, and liquid crystal display device using the same | |
| JP2001005016A (en) | Liquid crystal device and method for inspecting it | |
| JPH04106528A (en) | Liquid crystal display device | |
| JPH09113562A (en) | Inspecting method for liquid crystal matrix display panel | |
| JP2002344097A (en) | Mounting substrate and display device having the same | |
| JPH04217228A (en) | Liquid crystal display device | |
| JP2000165022A (en) | Electrode terminal connecting structure | |
| JPS591247Y2 (en) | display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20050617 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20050713 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20050912 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20051012 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20051014 |
|
| R150 | Certificate of patent (=grant) or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091028 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091028 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101028 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111028 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111028 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121028 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121028 Year of fee payment: 7 |
|
| S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121028 Year of fee payment: 7 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121028 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20131028 Year of fee payment: 8 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |