JPH02247618A - Liquid crystal display device - Google Patents
Liquid crystal display deviceInfo
- Publication number
- JPH02247618A JPH02247618A JP6889789A JP6889789A JPH02247618A JP H02247618 A JPH02247618 A JP H02247618A JP 6889789 A JP6889789 A JP 6889789A JP 6889789 A JP6889789 A JP 6889789A JP H02247618 A JPH02247618 A JP H02247618A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- crystal display
- driving
- film sheet
- display device
- 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.)
- Pending
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 42
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 8
- 229920005989 resin Polymers 0.000 abstract description 11
- 239000011347 resin Substances 0.000 abstract description 11
- 239000004033 plastic Substances 0.000 abstract description 5
- 229920003023 plastic Polymers 0.000 abstract description 5
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 3
- 239000010935 stainless steel Substances 0.000 abstract description 3
- 238000005452 bending Methods 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract 2
- 239000011521 glass Substances 0.000 description 11
- 230000006870 function Effects 0.000 description 7
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 239000004020 conductor Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- -1 polybutylene terephthalate Polymers 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 229920006289 polycarbonate film Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明は液晶表示装置に係り、特に、小形化されかつ信
頼性の高いフィルム型液晶表示装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a liquid crystal display device, and particularly to a film type liquid crystal display device that is compact and highly reliable.
（従来の技術）
主面に透明導電膜（層）で所要の電極パターンを隊けた
透明性基体たとえばガラス板もしくは樹脂フィルムシー
トを、前記電極パターン形成面を対向させて配置しその
間に液晶材料を封入して成る構造の液晶表示装置は、フ
ラットデイスプレィとして注目されている。すなわち液
晶表示装置は薄型、軽量と言う特長を有するのでＣＲＴ
（カソード・レイ・チューブ）に代るフラットデイス
プレィとしてパソコンやワープロなどに使用されている
。しかして、この種液晶表示装置は、たとえば多機能カ
ード、メモリーカド、カードページャ−ハンディターミ
ナルなどへの応用を目的に、液晶表示装置本体（液晶表
示機能領域）とこれを駆動制御して所要の表示作用を行
わせる手段たとえば駆動用ＩＣとを一体化して、さらに
コンパクト化することが試みられている。つまり液晶表
示装置本体とこれを駆動制御する駆動用ＩＣとを一体化
し、第２図および第３図にそれぞれ要部断面を示すよう
に構成することが知られている。第２図は液晶表示装置
本体１とこの液晶表示装置本体１を駆動制御する駆動用
ＩＣ２を搭載した基板２ａとをたとえば異方性導電接着
剤３ａを介してフレキシブルプリント配線板３にて接続
一体化した構成を示し、また第３図は液晶表示装置本体
１を成すガラス板１ａの一部を延設しておきこの延設部
分に駆動用ＩＣ２を搭載した構成を示したものである。(Prior art) A transparent substrate, such as a glass plate or a resin film sheet, with a desired electrode pattern formed on its main surface by a transparent conductive film (layer) is arranged with the electrode pattern forming surfaces facing each other, and a liquid crystal material is placed between them. Liquid crystal display devices with a sealed structure are attracting attention as flat displays. In other words, since liquid crystal display devices have the characteristics of being thin and lightweight, CRT
It is used in computers and word processors as a flat display instead of (cathode ray tube). Therefore, this type of liquid crystal display device is designed to drive and control the liquid crystal display device body (liquid crystal display functional area) and the required display for the purpose of application to, for example, multi-function cards, memory cards, card pagers, and handheld terminals. Attempts have been made to integrate means for performing a display function, such as a driving IC, to make the device even more compact. That is, it is known that a liquid crystal display device body and a driving IC for driving and controlling the liquid crystal display device are integrated, and configured as shown in FIG. 2 and FIG. 3, respectively, as cross-sections of essential parts are shown. In FIG. 2, a liquid crystal display device main body 1 and a substrate 2a on which a driving IC 2 for driving and controlling the liquid crystal display device main body 1 is mounted are connected together by a flexible printed wiring board 3 via, for example, an anisotropic conductive adhesive 3a. FIG. 3 shows a structure in which a part of the glass plate 1a constituting the main body 1 of the liquid crystal display device is extended and a driving IC 2 is mounted on this extended part.
なお、図において、ｌａ’は前記ガラス板１ａに対向し
て配設されたガラス板、ｌｂはガラス板１ａ、 ｌａの
対向する面に設けられた透明電極パターン、ｌｃはガラ
ス板１ａ、 ｌａ’の間を所定間隔に保持するとともに
液密に封止する封止体、ｌｄはガラス板１ａ。In the figure, la' is a glass plate disposed opposite the glass plate 1a, lb is a transparent electrode pattern provided on the opposite surface of the glass plate 1a and la, and lc is a glass plate 1a, la' A sealing body that maintains a predetermined distance between the glass plates and seals them liquid-tightly, ld is the glass plate 1a.
ｌａ’の間に封入された液晶材料、１ｅはガラス板１ａ
の裏面に配設された反射板、１ｒはガラス板１ａ’面に
配設された偏光板、２ｂは駆動用ＩＣ２に接続する導体
パターン、２Ｃは前記導体パターン２ｂと駆動用ＩＣ２
とを接続する導電性接着剤である。Liquid crystal material sealed between la', 1e is glass plate 1a
1r is a polarizing plate arranged on the surface of the glass plate 1a', 2b is a conductor pattern connected to the driving IC 2, and 2C is the conductor pattern 2b and the driving IC 2.
It is a conductive adhesive that connects the
（発明が解決しようとする課ｍ） しかし、上記構成の場合には次のような不都合がある。(Problem that the invention seeks to solve) However, the above configuration has the following disadvantages.
すなわち第２図に示した構成では、駆動用ＩＣ２の配線
基板２ａに対する搭載、実装に当って、ワイヤーボンデ
ィング法もしくはＴＡＢ法（テープ・オートメーテツド
・ボンディング）を採用している。ところでこのような
結線方法では、表示画面の大型化や高精細化に伴って駆
動用ＩＣ２の数を殖やしたり、接続ピッチを細かくする
とき信頼性の高い接続を達成し難いと言う問題がある。That is, in the configuration shown in FIG. 2, the wire bonding method or the TAB method (tape automated bonding) is employed for mounting and mounting the driving IC 2 on the wiring board 2a. However, in this connection method, there is a problem in that it is difficult to achieve a highly reliable connection when the number of driving ICs 2 is increased or the connection pitch is made finer as the display screen becomes larger and more precise.
一方第３図に示した構成の場合は、前記のような駆動用
ＩＣの接続問題を改善し得るが、取扱い難いなどと言う
問題がある。つまりこの（１が成では液晶表示装置本体
１などガラス基板１ａ、 ｌａ’であるため、薄型化や
軽量化に限度があるばかりでなく、可撓性がなく機械的
にも比較的脆いので電子機器として組立て、構成する際
破ＪＭ Ｌ易いなどの問題がある。On the other hand, in the case of the configuration shown in FIG. 3, although it is possible to improve the connection problem of the driving IC as described above, there are problems such as difficulty in handling. In other words, since this (1) is made of glass substrates 1a and 1a' such as the liquid crystal display device body 1, there is a limit to how thin and light it can be made. There are problems such as easy JML damage when assembling and configuring equipment.
上記問題に対して、プラスチック型液晶表示装置での対
応が考えられる。つまりプラスチック型液晶表示装置に
おいて、フィルムシートの一部を延設しこの部分に駆動
用ＩＣを搭載、実装して第３図に示すよう構成とするこ
とも考えられる。しかしこの場合には、フィルムシート
が可撓性に富むため駆動用ＩＣと配線（導体）パターン
との接続部や駆動用ＩＣ自身に応力がかかり、コンタク
ト不良など起し易く信頼性の点で問題がある。A possible solution to the above problem is to use a plastic type liquid crystal display device. In other words, in a plastic type liquid crystal display device, it is conceivable to extend a part of the film sheet and mount and mount a driving IC on this part to obtain a configuration as shown in FIG. However, in this case, since the film sheet is highly flexible, stress is applied to the connection between the drive IC and the wiring (conductor) pattern, as well as to the drive IC itself, which can easily cause contact failure, which poses a problem in terms of reliability. There is.
［発明の構成］
（課題を解決するための手段）
本発明は上記事情に対処してなされたもので、液晶表示
機能領域を有するフィルムシートの前記液晶表示機能領
域近傍に液晶表示機能を駆動する駆動用ＩＣを搭載、配
設するとともに、前記駆動用ＩＣを搭載、配設したフィ
ルムシートの裏面に剛性を有する補強体を一体的に配設
したことを特徴とする。[Structure of the Invention] (Means for Solving the Problem) The present invention has been made in response to the above-mentioned circumstances, and includes driving a liquid crystal display function in the vicinity of the liquid crystal display function area of a film sheet having a liquid crystal display function area. It is characterized in that a driving IC is mounted and arranged, and a rigid reinforcing body is integrally arranged on the back side of the film sheet on which the driving IC is mounted and arranged.
（作 用）
上記構成によれば、多くの部分を占める液晶表示機能領
域は可撓性など保持する一方、駆動用ＩＣを搭載、実装
した部分の裏面には、剛性を有する補強体が一体的に配
設しであるため、前記液晶表示機能領域（液晶表示本体
部）に曲げ応力が加わった場合においても駆動用ＩＣと
配線（導体）パターンとの接続部や駆動用ＩＣ自身にか
かる応力が容易に緩和され、前記接続不良の発生や駆動
用ＩＣの破損などが防止される。(Function) According to the above configuration, the liquid crystal display functional area that occupies most of the area maintains flexibility, while a rigid reinforcing body is integrated on the back side of the part where the driving IC is mounted and mounted. Because the structure is arranged in This can be easily alleviated, and the occurrence of the connection failure and damage to the driving IC can be prevented.
（実施例）
以下第１図を参照して本発明の詳細な説明する。第１図
は本発明に係るプラスチック型液晶表示装置の構成例を
断面的に示したもので、４ａ。(Example) The present invention will be described in detail below with reference to FIG. FIG. 1 shows a cross-sectional view of a configuration example of a plastic type liquid crystal display device according to the present invention, and shows 4a.
４ａ’は対向して配置された厚さ １００μｍ程度の樹
脂フィルムシートたとえばポリブチレンテレフタレート
フィルムで、一方の樹脂フィルムシート４ａは他の樹脂
フィルムシート４ａ’よりも一端側を延長させである。4a' are resin film sheets having a thickness of about 100 μm, for example, polybutylene terephthalate films, which are arranged opposite to each other, and one resin film sheet 4a has one end longer than the other resin film sheet 4a'.
また４ｂは前記樹脂フィルムシート４ａ、４ａ’の対向
する面に設けられたインジウム−スズ酸化膜から成る透
明電極パターン、４ｃは前記樹脂フィルムシート４ａ、
４ａ’を所定間隔に保持して液晶材料４ｄを液密に封入
するたとえばエポキシ樹脂から成る封止体、４ｅは前記
樹脂フィルムシート４ａの反対面に一体的に配設された
反射層、４「は前記樹脂フィルムシー１□４ａ’の反対
面に一体的に配設された偏光板であり、これらによって
液晶表示機能領域（液晶表示本体部）４を成している。Further, 4b is a transparent electrode pattern made of an indium-tin oxide film provided on the opposing surfaces of the resin film sheets 4a and 4a', 4c is the resin film sheet 4a,
4a' is a sealing body made of, for example, epoxy resin that holds liquid crystal material 4d at a predetermined interval and liquid-tightly encapsulates the liquid crystal material 4d; 4e is a reflective layer integrally disposed on the opposite surface of the resin film sheet 4a; is a polarizing plate that is integrally disposed on the opposite surface of the resin film sheet 1□4a', and together constitutes a liquid crystal display functional area (liquid crystal display main body portion) 4.
さらに２は前記フィルムシート４ａの延長（延設）部分
に、液晶表示機能領域４から引き田された導電パターン
４ｂ’のポンディングパッド部に、たとえばＡｇペース
ト２ｃにて電気的に接続して搭載、実装された、たとえ
ば５．５Ｘ ６．３Ｘ Ｏ，４５ｍｍ 、接続ビン数
１００の駆動用ＩＣｌ３は前記駆動用ＩＣ２を搭載、実
装したフィルムシート４ａの延長（延設）部分の裏面に
一体的に配設した剛性を有する補強体たとえば厚さ ０
．２ｎｕａ、 ＩＯＸ ｌｏＩＩｍのステンレス板であ
る。Further, 2 is mounted on the extended (extended) portion of the film sheet 4a, electrically connected to the bonding pad portion of the conductive pattern 4b' drawn from the liquid crystal display functional area 4, using, for example, Ag paste 2c. , the mounted driving IC 3, for example, 5.5 x 6.3 The rigid reinforcement provided, for example, with a thickness of 0
．． 2nua, IOX loIIm stainless steel plate.
このように構成したフィルム型液晶表示装置を８５Ｘ
５４Ｘ １．ｏｎｌｌのカード型電子機器に組み込み
、このカード型電子機器の両短辺を固定し中央部に２Ｋ
ｇｆの圧力を３回加え動作試験評価したところ正常に動
作することが確認された。The film type liquid crystal display device configured in this way is
54X 1. Built into onll's card type electronic device, both short sides of this card type electronic device are fixed and 2K is installed in the center.
When the pressure of gf was applied three times and the operation was evaluated, it was confirmed that it operated normally.
なお、上記構成において、樹脂フィルムシート４ａ、４
ａ’はポリエチレンテレフタレートフフイルムポリカー
ボネートフイルム、ポリスチレンフィルムなど透明性で
耐熱性や加工性など良好なものならいずれも使用し得る
。さらに透明性電極、＜ターン４ｂや導電パターン２ｂ
に酸化スズなども使用でき、それらの電極パターン４ｂ
および導電パターン２ｂはスパッタ法や蒸着法などによ
り形成される。また前記駆動用ＩＣ２の搭載、実装には
低融点金属たとえば、インジウム系金属から成る接着電
極を被着形成しておき圧接、接合してもよい。さらにま
た、剛性を有する補強体５は前記ステンレス製以外の他
の金属製もしくはセラミック製でもよく、この一体的な
配設は一般的に樹脂系の接着剤でよいし、その配設は駆
動用ＩＣ２の搭載、実装前でも後でもよい。もちろん形
状、大きさなどは上記例に限定されるものではない。Note that in the above configuration, the resin film sheets 4a, 4
For a', any film can be used as long as it is transparent and has good heat resistance and processability, such as polyethylene terephthalate film, polycarbonate film, and polystyrene film. Furthermore, transparent electrodes, <turn 4b and conductive pattern 2b
Tin oxide etc. can also be used for the electrode pattern 4b.
The conductive pattern 2b is formed by sputtering, vapor deposition, or the like. Further, in order to mount and mount the driving IC 2, an adhesive electrode made of a low melting point metal such as an indium metal may be applied and bonded by pressure bonding. Furthermore, the rigid reinforcing body 5 may be made of metal or ceramic other than stainless steel, and this integral arrangement may generally be made with a resin-based adhesive, and the arrangement may be used for driving purposes. The IC2 may be mounted before or after mounting. Of course, the shape, size, etc. are not limited to the above examples.
［発明の効果］
上記の如く本発明に係る液晶表示装置は、プラスチック
型の特長つまり薄型化や小形化が容易なこと、軽量化し
得ることおよび可撓性を有することなどが十分に活かさ
れているばかりでなく、−体的に実装した駆動用ＩＣの
電気的な接続部の信頼性なども十分に保持する。つまり
駆動用ＩＣの搭載された領域は、補強体によって補強さ
れているため、晶表示機能領域（液晶表示本体部）に曲
げ応力が加わった場合においても駆動用ＩＣと配線（導
体）パターンとの接続部や駆動用ＩＣ自身にかかる応力
が容易に緩和され、前記接続不良の発生や駆動用ＩＣの
破損などが防止され、長期間に亘って所要の機能を維持
発揮する。[Effects of the Invention] As described above, the liquid crystal display device according to the present invention takes full advantage of the features of the plastic type, such as being easy to reduce in thickness and size, being lightweight, and having flexibility. Not only that, but also the reliability of the electrical connection of the physically mounted driving IC is sufficiently maintained. In other words, since the area where the drive IC is mounted is reinforced by the reinforcing body, even if bending stress is applied to the crystal display function area (liquid crystal display main body), the drive IC and wiring (conductor) pattern are The stress applied to the connection portion and the drive IC itself is easily alleviated, the occurrence of connection failures and damage to the drive IC are prevented, and the required functions are maintained and exhibited over a long period of time.
第１図は本発明に係る液晶表示装置の一構成例を示す断
面図、第２図および第３図は従来の駆動用ＩＣ一体型の
液晶表示装置の要部構成例をそれぞれ示す断面図である
。
２・・・・・・・・・駆動用ＩＣ
４・・・・・・・・・液晶表示機能領域（液晶表示本体
）４ａ、４ａ’・・・フィルムシート
５・・・・・・・・・補強体
第１図
出願人 株式会社 東芝
代理人 弁理士 須 山 佐 −
第２図
第３［３FIG. 1 is a sectional view showing an example of the structure of a liquid crystal display device according to the present invention, and FIGS. 2 and 3 are sectional views showing examples of the main part structure of a conventional driving IC-integrated liquid crystal display device. be. 2... Drive IC 4... Liquid crystal display functional area (liquid crystal display main body) 4a, 4a'... Film sheet 5...・Reinforcement body Figure 1 Applicant: Toshiba Corporation Patent attorney Sa Suyama - Figure 2, Figure 3 [3]
Claims (1)
表示機能領域近傍のフィルムシート面に搭載、配設され
液晶表示機能を駆動する駆動用ＩＣと、前記駆動用ＩＣ
が搭載、配設されたフィルムシートの裏面に一体的に配
設された補強体とを具備して成ることを特徴とする液晶
表示装置。A film sheet having a liquid crystal display functional area, a driving IC mounted and disposed on the film sheet surface near the liquid crystal display functional area and driving the liquid crystal display function, and the driving IC.
1. A liquid crystal display device comprising: a reinforcing body integrally disposed on the back side of a film sheet on which is mounted and disposed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6889789A JPH02247618A (en) | 1989-03-20 | 1989-03-20 | Liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6889789A JPH02247618A (en) | 1989-03-20 | 1989-03-20 | Liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02247618A true JPH02247618A (en) | 1990-10-03 |
Family
ID=13386907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6889789A Pending JPH02247618A (en) | 1989-03-20 | 1989-03-20 | Liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02247618A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994022044A1 (en) * | 1993-03-15 | 1994-09-29 | Seiko Epson Corporation | Liquid crystal display, and electronic device on which the liquid crystal display is mounted |
| EP0715346A2 (en) | 1994-11-30 | 1996-06-05 | Fujitsu Limited | Method of forming a MESFET with a T-shaped gate electrode and device formed thereby |
| WO2017006419A1 (en) * | 2015-07-06 | 2017-01-12 | 堺ディスプレイプロダクト株式会社 | Display device |
-
1989
- 1989-03-20 JP JP6889789A patent/JPH02247618A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994022044A1 (en) * | 1993-03-15 | 1994-09-29 | Seiko Epson Corporation | Liquid crystal display, and electronic device on which the liquid crystal display is mounted |
| EP0715346A2 (en) | 1994-11-30 | 1996-06-05 | Fujitsu Limited | Method of forming a MESFET with a T-shaped gate electrode and device formed thereby |
| WO2017006419A1 (en) * | 2015-07-06 | 2017-01-12 | 堺ディスプレイプロダクト株式会社 | Display device |
| US10338424B2 (en) | 2015-07-06 | 2019-07-02 | Sakai Display Products Corporation | Curved display apparatus |
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