JPH07122714B2 - Liquid crystal display - Google Patents
Liquid crystal displayInfo
- Publication number
- JPH07122714B2 JPH07122714B2 JP6961289A JP6961289A JPH07122714B2 JP H07122714 B2 JPH07122714 B2 JP H07122714B2 JP 6961289 A JP6961289 A JP 6961289A JP 6961289 A JP6961289 A JP 6961289A JP H07122714 B2 JPH07122714 B2 JP H07122714B2
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- crystal display
- terminal portion
- film carrier
- display element
- 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.)
- Expired - Fee Related
Links
Landscapes
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は映像機器や情報機器などに用いられる液晶表示
装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device used for video equipment, information equipment and the like.
従来の技術 液晶テレビをはじめとする映像機器やワードプロセッ
サ，パーソナルコンピュータに代表される情報機器など
の表示装置に用いられる液晶表示素子においては、表示
画素が高密度に集積されており、これらの画素が多数の
走査電極と信号電極からなるマトリックス電極によって
駆動されている。これら多数のマトリックス電極に液晶
表示素子の外部から駆動信号を与えるためには液晶表示
素子の周辺部に設けた給電端子と駆動用素子を搭載した
基板とを導電ゴムコネクタあるいはフィルムコネクタ等
で接続する方法が一般的であった。2. Description of the Related Art In a liquid crystal display element used in a display device such as an image device such as a liquid crystal television, a word processor, and an information device represented by a personal computer, display pixels are integrated at high density. It is driven by a matrix electrode composed of a large number of scan electrodes and signal electrodes. In order to apply a drive signal from the outside of the liquid crystal display element to these many matrix electrodes, the power supply terminals provided in the peripheral portion of the liquid crystal display element and the substrate on which the driving element is mounted are connected by a conductive rubber connector or a film connector. The method was common.
ところが近年、液晶表示素子の大型化や高コントラスト
化、あるいはカラー化に伴ってバック照明を必要とする
透過タイプの液晶表示素子が多くなり、駆動回路も一枚
の回路基板に実装することが困難になってきた。そのた
め駆動回路は走査電極側と信号電極側とに分離されて実
装するようになってきた。However, in recent years, the number of transmissive liquid crystal display elements that require back lighting has increased with the increase in size, contrast, and color of liquid crystal display elements, making it difficult to mount the drive circuit on a single circuit board. Has become. Therefore, the driving circuit has been mounted separately on the scanning electrode side and the signal electrode side.
第２図〜第４図はその例を示し、駆動用素子をフィルム
キャリアに搭載（TAB…テープ オートマッティド ボ
ンディング〈Tape Automated Bonding〉）したものを液
晶表示素子に接続する従来例を示している。第２図にお
いて、液晶表示素子１の給電端子部２には、駆動用素子
３を搭載したフィルムキャリア４の出力端子部4aを接続
している。又、フィルムキャリア４の入力端子部4bはバ
ス回路基板５に接続されている。2 to 4 show such an example, and show a conventional example in which a driving element mounted on a film carrier (TAB ... Tape Automated Bonding) is connected to a liquid crystal display element. . In FIG. 2, the power supply terminal portion 2 of the liquid crystal display element 1 is connected to the output terminal portion 4a of the film carrier 4 on which the driving element 3 is mounted. The input terminal portion 4b of the film carrier 4 is connected to the bus circuit board 5.
次に、第３図に示した従来例は、第２図に示した従来例
と似ているが、出力端子部4aを折り曲げ、液晶表示素子
１の下部に設置されたバック照明の筐体６の側面にバス
回路基板５を配設している。Next, the conventional example shown in FIG. 3 is similar to the conventional example shown in FIG. 2, but the output terminal portion 4a is bent, and the back lighting housing 6 installed under the liquid crystal display element 1 is used. The bus circuit board 5 is disposed on the side surface of the.
第４図に示した従来例は、液晶表示素子１の給電端子部
２を広くとり、給電端子とともにバス回路基板５が設置
できるようにしている。そして前記給電端子部２上にフ
ィルムキャリア４に搭載した駆動用素子３を実装してい
く。尚、バス回路基板５は0.6mm以下のリジット基板、
あるいはフレキシブル基板（FPC）が適している。In the conventional example shown in FIG. 4, the power supply terminal portion 2 of the liquid crystal display element 1 is widened so that the bus circuit board 5 can be installed together with the power supply terminal. Then, the driving element 3 mounted on the film carrier 4 is mounted on the feeding terminal portion 2. The bus circuit board 5 is a rigid board of 0.6 mm or less,
Alternatively, a flexible substrate (FPC) is suitable.
発明が解決しようとする課題 ところが、以上のような従来の構成であると次のような
課題があった。第２図および第４図の従来例では、液晶
表示素子１の給電端子部２の周辺部にバス回路基板５が
配置されるため、表示部の周辺のスペースが広く必要と
なり、パーソナルコンピューター，ワードプロセッサー
などの機器の小型化に支障があった。また、第３図の従
来例では機器のコンパクト化が可能であるが、フィルム
キャリア４の出力端子部4aを折り曲げるため、折り曲げ
部のリード強度が弱くなり、接続信頼性に欠ける。Problems to be Solved by the Invention However, the conventional configuration as described above has the following problems. In the conventional example shown in FIGS. 2 and 4, since the bus circuit board 5 is arranged in the peripheral portion of the power supply terminal portion 2 of the liquid crystal display element 1, a wide space is required around the display portion, and a personal computer or a word processor is required. There was an obstacle to the miniaturization of equipment such as. Further, in the conventional example of FIG. 3, the device can be made compact, but since the output terminal portion 4a of the film carrier 4 is bent, the lead strength of the bent portion is weakened and the connection reliability is poor.
本発明は上記問題点に鑑み、液晶表示素子の表示部周辺
のスペースが小さく、接続信頼性の高い液晶表示装置を
提供することを目的とする。In view of the above problems, it is an object of the present invention to provide a liquid crystal display device which has a small space around the display portion of a liquid crystal display element and has high connection reliability.
課題を解決するための手段 本発明は上記目的を達成するために、給電端子部を備え
た液晶表示素子と駆動用素子を搭載すると共に出力端子
部を前記給電端子部に接続しかつ入力端子部を備えたフ
ィルムキャリアと、前記液晶表示素子の裏面に設けられ
たバス回路基板とを有し、前記フィルムキャリアを給電
端子部上に配置し前記入力端子部を折り曲げて前記バス
回路基板に接続したものである。Means for Solving the Problems In order to achieve the above object, the present invention mounts a liquid crystal display element having a power feeding terminal portion and a driving element, and connects an output terminal portion to the power feeding terminal portion and an input terminal portion. And a bus circuit board provided on the back surface of the liquid crystal display element, the film carrier is arranged on a power supply terminal portion, and the input terminal portion is bent and connected to the bus circuit substrate. It is a thing.
作用 本発明によれば、液晶表示素子の表示部周辺のスペース
を比較的小さくできるとともに、フィルムキャリアの折
り曲げ部が線幅の広い入力端子部であるため、リード強
度が強くなり接続信頼性も向上する。Effects According to the present invention, the space around the display portion of the liquid crystal display element can be made relatively small, and since the bent portion of the film carrier is an input terminal portion having a wide line width, the lead strength is increased and the connection reliability is improved. To do.
実施例 以下、本発明の一実施例を図面を用いて説明する。第１
図a,bは本発明の液晶表示装置における液晶表示素子と
その駆動用素子を搭載したフィルムキャリアの構成を示
す図である。Embodiment An embodiment of the present invention will be described below with reference to the drawings. First
FIGS. A and b are diagrams showing a structure of a liquid crystal display device and a film carrier on which a driving element thereof is mounted in a liquid crystal display device of the present invention.
第１図a,bにおいて７は液晶表示素子であり、給電端子
を含む接続部である給電端子部８を備えている。フィル
ムキャリア10は、ほぼ中央部に駆動用素子９を搭載して
いる。フィルムキャリア10の出力端子部10aを前記給電
端子部８に接続し、フィルムキャリア10を給電端子部８
上に配置する。但し、フィルムキャリア10の入力端子部
10bは給電端子部８上に配置してはおらず、液晶表示素
子７の周辺部に突出している。入力端子部10bはバス回
路基板11に接続していて、この入力端子部10bをコの字
形に折り曲げて、バス回路基板11を液晶表示素子７の裏
面にバス回路基板11を設置すると、第１図ｂのようにな
る。In FIGS. 1A and 1B, reference numeral 7 is a liquid crystal display element, which is provided with a power feeding terminal portion 8 which is a connecting portion including a power feeding terminal. The film carrier 10 has the driving element 9 mounted at substantially the center thereof. The output terminal portion 10a of the film carrier 10 is connected to the power feeding terminal portion 8 to connect the film carrier 10 to the power feeding terminal portion 8
Place it on top. However, the input terminal part of the film carrier 10
10b is not arranged on the power supply terminal portion 8 but protrudes to the peripheral portion of the liquid crystal display element 7. The input terminal portion 10b is connected to the bus circuit board 11, the input terminal portion 10b is bent into a U-shape, and when the bus circuit board 11 is placed on the back surface of the liquid crystal display element 7, the first It looks like Figure b.
以上のような本実施例の液晶表示装置の構成によれば、
表示部の周辺部のスペースが広くなり機器の小型化に支
障があったという問題に対しては、バス回路基板を液晶
表示素子７の下部に配置することにより省スペース化が
実現でき、機器のコンパクト化も出来るようになる。
又、フィルムキャリア10の出力端子部10aを折り曲げる
ことでリード強度が低下する問題については、出力端子
部10a側の折り曲げから入力端子部10b側の折り曲げに変
えると、入力端子部10bのリード線幅が広いため折り曲
げに対して強く、リード線の強度を高くすることができ
る。更に、液晶表示素子７にフィルムキャリア10および
バス回路基板11が保持された状態なのでリード部への機
械的応力が小さく済み、接続信頼性を大幅に向上するこ
とができる。又、薄型のバス回路基板11を使用するの
で、駆動用素子を実装した状態においても液晶表示素子
７の厚みはほとんど変わらない薄型実装が可能となる。According to the configuration of the liquid crystal display device of the present embodiment as described above,
To solve the problem that the space around the display part is wide and hinders the miniaturization of the device, by arranging the bus circuit board under the liquid crystal display element 7, it is possible to realize space saving. It becomes possible to make it compact.
Further, regarding the problem that the lead strength is reduced by bending the output terminal portion 10a of the film carrier 10, when the bending of the output terminal portion 10a side is changed to the bending of the input terminal portion 10b side, the lead wire width of the input terminal portion 10b is changed. Since it is wide, it is strong against bending and the strength of the lead wire can be increased. Furthermore, since the film carrier 10 and the bus circuit board 11 are held by the liquid crystal display element 7, the mechanical stress on the lead portion can be reduced, and the connection reliability can be greatly improved. Further, since the thin bus circuit board 11 is used, it is possible to perform thin mounting in which the thickness of the liquid crystal display element 7 hardly changes even when the driving element is mounted.
発明の効果 本発明によれば、入力端子部を折り曲げて、バス回路基
板を液晶表示素子の裏面に配設することで、液晶表示素
子の表示部周辺のスペースが小さくなり、また入力端子
部のリード線幅が広いため接続信頼性の面でも優れた液
晶表示装置を提供することができる。According to the present invention, by bending the input terminal portion and disposing the bus circuit board on the back surface of the liquid crystal display element, the space around the display portion of the liquid crystal display element is reduced and the input terminal portion Since the lead wire width is wide, it is possible to provide a liquid crystal display device excellent in connection reliability.
第１図a,bは本発明の一実施例による液晶表示装置の構
成を示す断面図、第２図〜第４図はそれぞれ従来の液晶
表示装置の構成を示す断面図である。 ７……液晶表示素子、８……給電端子部、９……駆動用
素子、10……フィルムキャリア、10a……出力端子部、1
0b……入力端子部、11……バス回路基板。1A and 1B are sectional views showing the structure of a liquid crystal display device according to an embodiment of the present invention, and FIGS. 2 to 4 are sectional views showing the structure of a conventional liquid crystal display device. 7 ... Liquid crystal display element, 8 ... Power supply terminal section, 9 ... Driving element, 10 ... Film carrier, 10a ... Output terminal section, 1
0b: Input terminal block, 11: Bus circuit board.
Claims (1)
用素子を搭載すると共に出力端子部を前記給電端子部に
接続し、かつ入力端子部を備えたフィルムキャリアと、
前記液晶表示素子の裏面に設けられたバス回路基板とを
有し、前記フィルムキャリアを給電端子部上に配置し前
記入力端子部を折り曲げて前記バス回路基板に接続した
ことを特徴とする液晶表示装置。1. A liquid crystal display device having a power supply terminal portion, a film carrier having a driving element mounted thereon, an output terminal portion connected to the power supply terminal portion, and a input terminal portion.
A liquid crystal display, comprising: a bus circuit board provided on the back surface of the liquid crystal display element; the film carrier being arranged on a power supply terminal portion; and the input terminal portion being bent and connected to the bus circuit substrate. apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6961289A JPH07122714B2 (en) | 1989-03-22 | 1989-03-22 | Liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6961289A JPH07122714B2 (en) | 1989-03-22 | 1989-03-22 | Liquid crystal display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02248926A JPH02248926A (en) | 1990-10-04 |
| JPH07122714B2 true JPH07122714B2 (en) | 1995-12-25 |
Family
ID=13407852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6961289A Expired - Fee Related JPH07122714B2 (en) | 1989-03-22 | 1989-03-22 | Liquid crystal display |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07122714B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04233514A (en) * | 1990-12-28 | 1992-08-21 | Sharp Corp | Active matrix substrate |
| US5341233A (en) * | 1991-05-15 | 1994-08-23 | Idemitsu Kosan Co., Ltd. | Liquid crystal module with tab assemblies connected through a flexible circuit board |
| US5592199A (en) * | 1993-01-27 | 1997-01-07 | Sharp Kabushiki Kaisha | Assembly structure of a flat type device including a panel having electrode terminals disposed on a peripheral portion thereof and method for assembling the same |
| EP0617308A1 (en) * | 1993-03-22 | 1994-09-28 | NCR International, Inc. | Liquid crystal display with integrated electronics |
| TW344043B (en) * | 1994-10-21 | 1998-11-01 | Hitachi Ltd | Liquid crystal display device with reduced frame portion surrounding display area |
| JP2000172191A (en) | 1998-12-04 | 2000-06-23 | Fujitsu Ltd | Planar display device |
-
1989
- 1989-03-22 JP JP6961289A patent/JPH07122714B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02248926A (en) | 1990-10-04 |
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Legal Events
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|---|---|---|---|
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Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| S111 | Request for change of ownership or part of ownership |
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| R350 | Written notification of registration of transfer |
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