JPS61167924A - Liquid-crystal display device - Google Patents
Liquid-crystal display deviceInfo
- Publication number
- JPS61167924A JPS61167924A JP844985A JP844985A JPS61167924A JP S61167924 A JPS61167924 A JP S61167924A JP 844985 A JP844985 A JP 844985A JP 844985 A JP844985 A JP 844985A JP S61167924 A JPS61167924 A JP S61167924A
- Authority
- JP
- Japan
- Prior art keywords
- connecting material
- film
- thermocompression
- transparent
- anisotropic conductive
- 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
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1345—Conductors connecting electrodes to cell terminals
- G02F1/13452—Conductors connecting driver circuitry and terminals of panels
-
- 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
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/321—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by conductive adhesives
-
- 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
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は１文字や画像の表示に用いることができる液晶
表示装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a liquid crystal display device that can be used to display a single character or image.
（従来の技術）
透明電極を設けた２枚の透明電極板を、わずかな間隙を
設けて対向させ１間隙中に液晶物質を充填したのち、対
向電極に信号電圧を印加し、液晶物質の電気光学的変化
によって表示を行なう液晶表示装置は、小型薄型、およ
び低消費電力等の長所によって著しく使用量が増加しつ
つある。(Prior art) Two transparent electrode plates provided with transparent electrodes are placed facing each other with a slight gap between them, and one gap is filled with a liquid crystal material, and then a signal voltage is applied to the opposing electrodes to generate electricity of the liquid crystal material. 2. Description of the Related Art Liquid crystal display devices, which perform display through optical changes, are increasingly being used due to their advantages such as small size, thinness, and low power consumption.
従来の一般的な液晶表示装置の構造は、第３図に示すよ
うに、内面に透明導電膜が形成されたガラス板１に液晶
物質２が充填され、ガラス板の端部に設けた電極と駆動
回路基板４をフレキシブル基板５を用いて接続している
。The structure of a conventional general liquid crystal display device is, as shown in FIG. A drive circuit board 4 is connected using a flexible board 5.
両者を接続した構造としては、熱圧着性を持ったフレキ
シブル印刷導電シートを用いた構造、または異方導電性
接着剤を用いてフレキシブル基板を接着した構造、ある
いは導電性ゴムを用いて電極と回路基板を圧接した構造
などが使用されている。The structure that connects the two is a structure that uses a flexible printed conductive sheet with thermocompression bonding properties, a structure that uses an anisotropic conductive adhesive to bond a flexible substrate, or a structure that uses conductive rubber to connect the electrode and circuit. A structure in which the substrate is pressed together is used.
（発明が解決しようとする問題点）
前記の接続構造であると、第４図に示すようにガラス板
１から突出した透明導電膜６に前記接続材料が接着、ま
たは圧接されているが、第５図に示すように透明導電膜
６または接続材料７によって完全にはカバーされておら
ず一部露出する部分が生じている。透明導電膜に一般に
使用されるＩＴＯは酸化物であるため、乾燥大気中では
安定であるが、水分が存在すると分解し易く、さらに電
圧を印加すると電解腐食、あるいは隣接間ショートによ
る過大電流のためにパターン断線が生じる。(Problems to be Solved by the Invention) In the above connection structure, the connection material is adhered or pressure-bonded to the transparent conductive film 6 protruding from the glass plate 1 as shown in FIG. As shown in FIG. 5, some portions are not completely covered by the transparent conductive film 6 or the connecting material 7 and are partially exposed. ITO, which is commonly used for transparent conductive films, is an oxide, so it is stable in dry air, but it easily decomposes in the presence of moisture, and when voltage is applied, it may cause electrolytic corrosion or excessive current due to short circuit between adjacent parts. Pattern breakage occurs.
また金属屑などの導電性のゴミや、汗、唾液等のイオン
性汚物が付着し、ショートや腐食の原因となる。前記の
透明電極露出部分をカバーするために、塗料やガラス等
のコーティングを行なうと、これらは絶縁物であるため
に、前記接続材料を接着するには圧接により電気的に接
続することが困難になる問題があった。In addition, conductive dirt such as metal chips and ionic dirt such as sweat and saliva may adhere, causing short circuits and corrosion. If a coating such as paint or glass is applied to cover the exposed portion of the transparent electrode, since these are insulators, it will be difficult to make an electrical connection by pressure welding to adhere the connection material. There was a problem.
（問題を解決するための手段）
本発明の液晶表示装置は、従来の問題点を解消するため
に、透明導電膜からなる外部接婢周端子上に熱可塑性樹
脂からなる保護膜を形成し、可撓性絶縁フィルム上に配
線パターンを形成した接続材料を異方導電性接着剤を介
して熱圧着を行なったものである。(Means for Solving the Problem) In order to solve the conventional problems, the liquid crystal display device of the present invention forms a protective film made of thermoplastic resin on the external peripheral terminal made of a transparent conductive film, A connecting material in which a wiring pattern is formed on a flexible insulating film is bonded by thermocompression using an anisotropic conductive adhesive.
（作 用）
本発明の液晶表示装置は、透明電極上に形成した熱可塑
性樹脂による保護膜が接続材料の熱圧着時に溶融し、加
圧力により除去されるため、接続材料と透明電極との電
気的接続を妨害しない。また透明電極上で接続材料が熱
圧着されない部分は保護膜が残存しているため、湿度、
ゴミ等から保護され、外部接続用透明導電膜が完全に外
気から保護されたものである。(Function) In the liquid crystal display device of the present invention, the protective film made of thermoplastic resin formed on the transparent electrode melts during thermocompression bonding of the connecting material and is removed by pressure, so that the electrical connection between the connecting material and the transparent electrode is reduced. connection. In addition, since a protective film remains on the transparent electrode where the connecting material is not bonded by thermocompression, humidity and
It is protected from dust and the like, and the transparent conductive film for external connection is completely protected from the outside air.
（実施例）
本発明の一実施例を第１図および第２図に基づいて説明
する。(Example) An example of the present invention will be described based on FIGS. 1 and 2.
第１図において、１は液晶セルを形成するガラス板、３
はシール剤、６は透明導電膜である。８は本発明の特徴
である透明導電膜上に形成された熱可塑性樹脂による保
護膜で、耐湿性がある熱可塑性樹脂ならばよく、本実施
例では熱可塑性ポリエステル（東洋紡製バイロン）を用
いたが、そのほかにアクリル、ポリウレタン、ポリスチ
レン、塩化ビニル、ポリエチレン、ポリプロピレン、熱
可塑性ゴム等を用いることができる。In FIG. 1, 1 is a glass plate forming a liquid crystal cell, 3
6 is a sealant, and 6 is a transparent conductive film. 8 is a protective film made of thermoplastic resin formed on the transparent conductive film, which is a feature of the present invention. Any thermoplastic resin that is moisture resistant may be used. In this example, thermoplastic polyester (Vylon manufactured by Toyobo Co., Ltd.) was used. However, other materials such as acrylic, polyurethane, polystyrene, vinyl chloride, polyethylene, polypropylene, and thermoplastic rubber can be used.
第２図は接続材料７を異方導電性接着剤９を介して透明
導電膜６の上に熱圧着したのちの状態を示している。異
方導電性接着剤９は接着剤樹脂中に導電粉を分散した構
成のもので、熱圧着することで導電粉が被接続電極間に
挟まり導電が得られるものである６本実施例では、熱可
塑性ポリエステル中に粒径１０ないし５０μの焼結カー
ボンを６ｐｈｒ添加し、ボールミルで混練したものを使
用した。FIG. 2 shows the state after the connecting material 7 is thermocompression bonded onto the transparent conductive film 6 via the anisotropic conductive adhesive 9. The anisotropically conductive adhesive 9 has a structure in which conductive powder is dispersed in an adhesive resin, and by thermocompression bonding, the conductive powder is sandwiched between the electrodes to be connected and conductivity is obtained.6 In this embodiment, 6 phr of sintered carbon with a particle size of 10 to 50 μm was added to thermoplastic polyester, and the mixture was kneaded in a ball mill.
第２図に示すように、接続材料を熱圧着後の保護膜８は
接続材料７．および異方導電性接着剤９により排除され
、透明導電膜６と接続材料７の電気的接続を妨げること
はない。As shown in FIG. 2, the protective film 8 after bonding the connecting material by thermocompression is the connecting material 7. and is eliminated by the anisotropic conductive adhesive 9, so that the electrical connection between the transparent conductive film 6 and the connecting material 7 is not hindered.
また、透明導電膜６上で接続材料７が熱圧着されていな
い部分には保護膜８が残り、外気と透明導電膜６を遮断
し、防湿効果が得られる。Further, the protective film 8 remains on the transparent conductive film 6 on the part where the connecting material 7 is not bonded by thermocompression, and blocks the transparent conductive film 6 from the outside air, thereby providing a moisture-proofing effect.
（発明の効果）
本発明によれば、熱可塑性樹脂皮膜の形成という簡単な
処置で耐湿性、防塵性にすぐれた高信頼性の液晶表示装
置が得られるという極めて工業的価値の大なる効果があ
る。(Effects of the Invention) According to the present invention, a highly reliable liquid crystal display device with excellent moisture resistance and dust resistance can be obtained by a simple procedure of forming a thermoplastic resin film, which is an effect of extremely great industrial value. be.
第１図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図は同液晶表示装置の断面図、第３図
は従来の液晶表示装置の断面図。
第４＠は同外部接続用電極部の拡大断面図、第５図は同
接続部分の拡大断面図である。
１ ・・・ガラス板、 ２・・・液晶物質、 ３・・・
シール剤、４・・・駆動回路基板、 ５・・・フレキシ
ブル基板、 ６ ・・・透明導電膜、 ７ ・・・接続
材料、８ ・・・保護膜、 ９ ・・・異方導電接着剤
。
特許出願人 松下電器産業株式会社
第１図
第２図
第３図
第４図FIG. 1 is a sectional view showing the structure of a liquid crystal display device according to an embodiment of the present invention, FIG. 2 is a sectional view of the same liquid crystal display device, and FIG. 3 is a sectional view of a conventional liquid crystal display device. FIG. 4 is an enlarged sectional view of the external connection electrode portion, and FIG. 5 is an enlarged sectional view of the connection portion. 1...Glass plate, 2...Liquid crystal substance, 3...
Sealing agent, 4... Drive circuit board, 5... Flexible board, 6... Transparent conductive film, 7... Connection material, 8... Protective film, 9... Anisotropic conductive adhesive. Patent applicant: Matsushita Electric Industrial Co., Ltd. Figure 1 Figure 2 Figure 3 Figure 4
Claims (1)
脂からなる保護膜を形成し、可撓性絶縁フィルム上に配
線パターンを形成した接続材料を異方導電性接着剤を介
して熱圧着し、電気的に接続することを特徴とする液晶
表示装置。A protective film made of thermoplastic resin is formed on the external connection electrode terminal made of a transparent conductive film, and a connection material with a wiring pattern formed on a flexible insulating film is bonded by thermocompression using an anisotropic conductive adhesive. , a liquid crystal display device characterized by electrical connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP844985A JPS61167924A (en) | 1985-01-22 | 1985-01-22 | Liquid-crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP844985A JPS61167924A (en) | 1985-01-22 | 1985-01-22 | Liquid-crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61167924A true JPS61167924A (en) | 1986-07-29 |
Family
ID=11693432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP844985A Pending JPS61167924A (en) | 1985-01-22 | 1985-01-22 | Liquid-crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61167924A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5187604A (en) * | 1989-01-18 | 1993-02-16 | Hitachi, Ltd. | Multi-layer external terminals of liquid crystal displays with thin-film transistors |
| US5510918A (en) * | 1993-06-24 | 1996-04-23 | Hitachi, Ltd. | Liquid crystal display device with a structure of improved terminal contact |
| EP0803906A2 (en) * | 1996-04-26 | 1997-10-29 | Sharp Kabushiki Kaisha | Tape carrier package and liquid crystal display device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59121316A (en) * | 1982-12-28 | 1984-07-13 | Optrex Corp | Liquid crystal display element |
| JPS60154234A (en) * | 1984-01-24 | 1985-08-13 | Seiko Epson Corp | Manufacture of display device |
-
1985
- 1985-01-22 JP JP844985A patent/JPS61167924A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59121316A (en) * | 1982-12-28 | 1984-07-13 | Optrex Corp | Liquid crystal display element |
| JPS60154234A (en) * | 1984-01-24 | 1985-08-13 | Seiko Epson Corp | Manufacture of display device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5187604A (en) * | 1989-01-18 | 1993-02-16 | Hitachi, Ltd. | Multi-layer external terminals of liquid crystal displays with thin-film transistors |
| US5510918A (en) * | 1993-06-24 | 1996-04-23 | Hitachi, Ltd. | Liquid crystal display device with a structure of improved terminal contact |
| EP0803906A2 (en) * | 1996-04-26 | 1997-10-29 | Sharp Kabushiki Kaisha | Tape carrier package and liquid crystal display device |
| EP0803906A3 (en) * | 1996-04-26 | 1998-12-16 | Sharp Kabushiki Kaisha | Tape carrier package and liquid crystal display device |
| US6133978A (en) * | 1996-04-26 | 2000-10-17 | Sharp Kabushiki Kaisha | Tape carrier package and liquid crystal display device |
| US6396557B1 (en) | 1996-04-26 | 2002-05-28 | Sharp Kabushiki Kaisha | Tape carrier package and liquid crystal display device |
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