JPS6064325A - Liquid crystal display element - Google Patents
Liquid crystal display elementInfo
- Publication number
- JPS6064325A JPS6064325A JP17376283A JP17376283A JPS6064325A JP S6064325 A JPS6064325 A JP S6064325A JP 17376283 A JP17376283 A JP 17376283A JP 17376283 A JP17376283 A JP 17376283A JP S6064325 A JPS6064325 A JP S6064325A
- Authority
- JP
- Japan
- Prior art keywords
- substrate
- liquid crystal
- electrode terminal
- electrode terminals
- crystal display
- 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
Landscapes
- Physics & Mathematics (AREA)
- Liquid Crystal (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は液晶表示素子に係り、特にプラスチックフィル
ムを基板とする液晶表示素子に好適な電極端子取出しと
シール補強構造に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a liquid crystal display element, and particularly to an electrode terminal extraction and seal reinforcing structure suitable for a liquid crystal display element using a plastic film as a substrate.
従来のガラス基板のシール構造は第１図（ｂ）は第１図
（ａ）のＡ−Ａ’から見た断面図）のようで、一対の電
極付基板１，２の電極面を対向させた面の周囲にシール
部３を設けである。このシール部３は電極付基板１，２
間の空隙を５〜１０μｍに保つことと、素子の表示部を
大きくとるために極力接着幅を細くして基板の外周に配
置させるようにしておる。従来のガラス基板液晶表示素
子の周辺シール用接着剤にはエポキシ系が広く用いられ
ている。これはガラス基板との接着力に優れ、且つ耐液
晶性に優れているためである。近年、基板としてプラス
チックフィルムを使用し、素子製造プロセスの合理化を
行う方が得策であるとする観点から透明なポリエステル
、ポリカーボネート、トリアセテート等が用いられるが
、従来のエポキシ系シール材はキュア時間が長くか＼る
こと＼、接着力の面でかならずしもガラス基板のような
優れた接着強度は期待出来ない。その他のポリエステル
系、アミド系等のシール材にしても、シール部における
接着剤の厚みが５〜１０μｍという薄い接着層では接着
力は期待出来ない。The conventional sealing structure for glass substrates is as shown in FIG. 1(b), which is a cross-sectional view taken along line A-A' in FIG. 1(a). A seal portion 3 is provided around the surface. This seal portion 3 is connected to the electrode-attached substrates 1 and 2.
In order to keep the gap between 5 to 10 μm and to increase the display area of the device, the adhesive width is made as narrow as possible and arranged around the outer periphery of the substrate. Epoxy adhesives are widely used as adhesives for peripheral sealing of conventional glass substrate liquid crystal display elements. This is because it has excellent adhesion to glass substrates and excellent liquid crystal resistance. In recent years, transparent polyester, polycarbonate, triacetate, etc. have been used from the perspective of using plastic films as substrates to streamline the device manufacturing process, but conventional epoxy sealants have long curing times. However, in terms of adhesive strength, it is not necessarily possible to expect the excellent adhesive strength of glass substrates. Even with other polyester-based, amide-based, and other sealing materials, adhesive strength cannot be expected if the thickness of the adhesive at the sealing portion is as thin as 5 to 10 μm.
従って、プラスチックフィルムからなる基板に対するシ
ール構造は極力シール面積を大きくとるか或いはシール
部を補強する等の工夫が必要となる。Therefore, the sealing structure for the substrate made of plastic film requires measures such as increasing the sealing area as much as possible or reinforcing the sealing portion.
プラスチック基板で出来た液晶表示素子で比較的シール
部の剥離し易い部分は電極端子取出し部４側の上、下基
板接着部である。電極端子部を曲げると、シール部の接
着力が弱い場合、シール部が剥離してしまう。このよう
な現象はガラス基板れ
素子には観らない現象である。これはガラス素子＾
の場合シール剤のガラスに対する接着力が大きいためで
ある。In a liquid crystal display element made of a plastic substrate, the parts of the seal part that are relatively easy to peel off are the upper and lower substrate adhesive parts on the electrode terminal extraction part 4 side. If the electrode terminal portion is bent, the seal portion may peel off if the adhesive strength of the seal portion is weak. Such a phenomenon is not observed in glass substrate elements. This is because in the case of a glass element, the adhesive force of the sealant to the glass is strong.
実際の製造プロセス上問題なのは素子と駆動電源部接続
作業の際、素子の電極端子取出し部分に成る程度の力が
加わることになるが、これらの作業においてシール部剥
離を起すようでは困る。このために製作された素子にお
いてはシール部に極力外力が加わらないような素子構造
と、シール部の補強が必要である。A problem in the actual manufacturing process is that when connecting the element to the drive power source, force is applied to the part where the electrode terminals of the element are taken out, but it would be a problem if the seal part were to peel off during these operations. In an element manufactured for this purpose, it is necessary to have an element structure that prevents external force from being applied to the seal part as much as possible, and to reinforce the seal part.
か＼る観点から本発明の目的はプラスチックフィルムを
基板とする液晶表示素子において、電極端子取出し部に
導電性電極端子付フレキシブルフィルムを熱圧着し、素
子と駆動電源部との接続作業時にシール部に極力応力が
加わらないようにすると共に素子基板と熱圧着したフレ
キシブルフィルム間の間隙及び７レキシプルフイルム表
面を接着剤で相互に接着し、比較的弱いシール部を補強
し、信頼性の高い液晶表示表子を提供することにおる。From this point of view, the object of the present invention is to thermocompress a flexible film with conductive electrode terminals to the electrode terminal extraction part of a liquid crystal display element using a plastic film as a substrate, and to remove the seal part during connection work between the element and the driving power supply part. In addition, the gap between the flexible film bonded to the element substrate and thermocompression bonding and the surface of the flexible film are bonded to each other with adhesive, reinforcing relatively weak sealing parts, and providing highly reliable liquid crystal display. The purpose is to provide a display table.
プラスチックフィルム同志の接着はその中間に介在させ
た接着剤の厚みが５〜１０μｍのような薄膜になるとビ
ール強度は非常に弱い。一方、強い接着強度を得るには
プラスチックフィルム同志の融着、或いは溶剤でフィル
ムを部分的に溶かす溶剤接合法等がちる。しかしこれら
の方法は液晶表示素子の場合、限られた部分にしか適用
出来ない。例えば、電極リード部を超音波やヒータ加熱
により接合しようとすると酸化インジウム或いは酸化イ
ンジュウム・錫からなる金属導電膜が切れて導電不良と
なる。また、溶剤接合法においても、プラスチックフィ
ルムが溶けるとその上に形成されている上記導電膜が浮
き上がシ、切れ易くなる。When adhering plastic films to each other, the beer strength becomes very weak when the thickness of the adhesive interposed between them is as thin as 5 to 10 μm. On the other hand, in order to obtain strong adhesive strength, there are methods such as fusing plastic films together, or a solvent bonding method in which the films are partially melted with a solvent. However, these methods can only be applied to limited areas in the case of liquid crystal display elements. For example, if an attempt is made to join the electrode lead portions using ultrasonic waves or heating with a heater, the metal conductive film made of indium oxide or indium tin oxide will break, resulting in poor conductivity. Furthermore, in the solvent bonding method, when the plastic film melts, the conductive film formed thereon lifts up and becomes easily cut.
したがって融着や溶剤接合法は電極端子取出し面取外の
シール部をシールする場合にしか適用出来ない。Therefore, fusion bonding and solvent bonding methods can only be applied when sealing the seal portion outside the electrode terminal extraction surface.
以上の事柄から１対のプラスチック基板のシールに関し
ては、電極端子取出し側は接着剤によらなければならな
いので接着剤によるシール厚、面積を大きくした構造と
しなければならない。この点、本発明は１対のプラスチ
ック基板の電極端子取出し部において導電性電極端子付
フレキシブルフィルムを熱圧着して電極端子部を素子の
外に引出し、引出された電極端子部で駆動電源部との接
続を行うことによって接続作業時の外力が直接シール部
に加わらないようにすると共に素子基板と熱圧着したフ
レキシブルフィルム間の間隙及びその近傍を接着剤で相
互に接着補強することによシ、シール面積及び厚みを大
きくしたと同様の効果のあることを見出した。From the above considerations, regarding the sealing of the pair of plastic substrates, since the electrode terminal extraction side must be adhesive, the sealing thickness and area of the adhesive must be increased. In this regard, in the present invention, a flexible film with conductive electrode terminals is thermocompressed at the electrode terminal extraction portions of a pair of plastic substrates, the electrode terminal portions are pulled out of the element, and the pulled out electrode terminal portions are connected to the driving power supply unit. By making the connection, external force during the connection work is not directly applied to the sealing part, and by reinforcing the gap between the element substrate and the thermocompression-bonded flexible film and the vicinity thereof with adhesive, It was found that a similar effect can be obtained by increasing the seal area and thickness.
以下、本発明の実施例を図によシ説明する。第３〜５図
は実施例１を第６図は実施例２を説明する図である。Hereinafter, embodiments of the present invention will be explained with reference to the drawings. 3 to 5 are diagrams for explaining the first embodiment, and FIG. 6 is a diagram for explaining the second embodiment.
（実施例１）
１対のプラスチック基板８．９の材質は透明ポリエステ
ルフィルムで図示は省略したが基板間のギャップを一定
の間隙に制御するためのスペーサを一方の基板に塗布し
である。又、相対向する１対のプラスチック基板８．９
には表示用の電極が形成され、その上に配向制御膜が形
成されている。(Example 1) The material of the pair of plastic substrates 8 and 9 is a transparent polyester film, and although not shown, one substrate is coated with a spacer for controlling the gap between the substrates to a constant value. Also, a pair of plastic substrates 8.9 facing each other
Display electrodes are formed on the electrodes, and an alignment control film is formed thereon.
こ−で基板２は基板１よシも寸法を少なくとも一方向で
犬にし、そのつき出し部に電極端子１３が配列されてい
る。電極端子取出し部１４には電極端子付フレキシブル
フィルム１０（厚み６０μｍ１ポリエステルフイルム上
にポリエステル系ホットメルト剤を塗膜し、黒鉛からな
る導電性塗料を液晶表示素子の電極端子寸法と同一に塗
膜形成させたもの）をそれぞれの電極端子が対応する様
に約１２０Ｃで３秒間、０゜５ Ｋｇ／ ｃｍ２の圧力
を加えて熱圧着させる。（第３図（ａ） 、 （ｂ）
）その後、素子の電極端ｆ取出し部１４と熱圧着した電
極端子付フレキシブルフィルム１０との周辺にエポキシ
系接着剤１１を塗布し、１００１ニー３０分で硬化させ
る。（第４図（ａ） 、 （ｂ） ）
（実施例２）
１対の偏光層付プラスチック基板１６．１７の拐質は透
明ポリエステルフィルムに偏光子を含む層を積層させた
もので、基板間のギャップ制御、スペーサ配置、等、素
子製作法は実施例１と全く同一で、熱圧着した電極端子
付フレキシブルフィルム１０と素子の電極端子取出し部
１４との周辺にホットメルトガンを用いてポリエステル
系接着剤を塗布、シール部補強を行った。In this way, the substrate 2 has the same dimensions as the substrate 1 in at least one direction, and electrode terminals 13 are arranged on the protruding portion thereof. The electrode terminal extraction part 14 is coated with a polyester hot-melt agent on a flexible film 10 with an electrode terminal (thickness: 60 μm), and a conductive paint made of graphite is formed on the flexible film 10 with an electrode terminal (thickness: 60 μm) to have the same dimensions as the electrode terminal of the liquid crystal display element. 2) were thermocompressed by applying a pressure of 0°5 Kg/cm2 at approximately 120C for 3 seconds so that each electrode terminal corresponds to the other. (Figure 3 (a), (b)
) Thereafter, an epoxy adhesive 11 is applied around the electrode end f extraction portion 14 of the element and the flexible film 10 with an electrode terminal bonded by thermocompression, and is cured for 30 minutes at 1001 knees. (Fig. 4(a), (b)) (Example 2) A pair of polarizing layer-attached plastic substrates 16 and 17 are made by laminating a layer containing a polarizer on a transparent polyester film. The device manufacturing method, such as gap control and spacer arrangement, is exactly the same as in Example 1, and a hot melt gun is used to apply a polyester film around the flexible film 10 with electrode terminals bonded by thermocompression and the electrode terminal extraction portion 14 of the device. Adhesive was applied to strengthen the seal.
この実施例では何らかの理由で基板からの偏光子が電極
端子に影響を与えるような場合でも、補強した接着剤で
電極端子表面が被覆されるので問題は解消される。又、
ホットメルト系接着剤を用いることにより作業時間が著
しく短縮され、有利である。In this embodiment, even if the polarizer from the substrate affects the electrode terminals for some reason, the problem is solved because the surfaces of the electrode terminals are covered with the reinforced adhesive. or,
The use of hot-melt adhesives is advantageous because the working time is significantly reduced.
本発明によれば、従来のプラスチック液晶表示素子のシ
ール部において最も心配であった、電極端子取出し部側
のシール部に組立作業中に外力が直接加わらないような
構造としたこと＼、シール部近傍を接着剤を塗布し補強
したことにより、駆動電源の接続等の組立作業中におい
てもシール部が剥離することが皆無となり信頼性の高い
液晶表示素子を得ることができる。According to the present invention, the structure is such that no external force is directly applied to the seal part on the electrode terminal extraction part side during assembly, which was the biggest concern in the seal part of conventional plastic liquid crystal display elements. By applying an adhesive to the vicinity and reinforcing it, there is no possibility that the seal portion will peel off even during assembly work such as connecting a drive power source, and a highly reliable liquid crystal display element can be obtained.
第１図（ａ）は従来例の正面図、第１図（ｂ）は第１図
（ａ）のＡ−Ａ’からみた断面図、第２図は従来例の概
要を示す斜視図、第３図、第４図は本発明の実施例の正
面図及び断面図、第５図は本発明の実施例１の斜視図、
第６図は実施例２の概要を示す斜視図である。
１．２・・・ガラス基板、３・・・シール部、４・・・
電極端子取出し部、５・・・電極端子、６・・・液晶、
７・・・封止部、８，９・・・プラスチック基板、１０
・・・電極端子付フレキシブルフィルム、１１・・・エ
ポキシ系接着剤、１２・・・熱圧着部、１３．１５・・
・電極端子、１４・・・電極端子取出し部、１６，１７
・・・偏光層付プラスチック基板、１８・・・ポリエス
テル系ボットメルト接着剤。
第 １ 図
第２図
第３ 凹
第ψ図
第５図
箔６図FIG. 1(a) is a front view of the conventional example, FIG. 1(b) is a sectional view taken along line AA' in FIG. 1(a), FIG. 2 is a perspective view showing an outline of the conventional example, and FIG. 3 and 4 are a front view and a sectional view of the embodiment of the present invention, and FIG. 5 is a perspective view of the first embodiment of the present invention.
FIG. 6 is a perspective view showing an outline of the second embodiment. 1.2... Glass substrate, 3... Seal part, 4...
Electrode terminal extraction part, 5... Electrode terminal, 6... Liquid crystal,
7... Sealing part, 8, 9... Plastic substrate, 10
...Flexible film with electrode terminal, 11...Epoxy adhesive, 12...Thermocompression bonding part, 13.15...
・Electrode terminal, 14... Electrode terminal extraction part, 16, 17
...Plastic substrate with polarizing layer, 18...Polyester-based Botmelt adhesive. Figure 1 Figure 2 Figure 3 Concave Figure 5 Figure 6 Foil
Claims (1)
る上部基板および下部基板の間に液晶物質を有し、上部
基板は下部基板よシも寸法を短かくし、下部基板のつき
出した部分に電極端子取出し部を設けてなる液晶表示素
子において上記電極端子取出し部に電極端子付フレキシ
ブルフィルムをそれぞれの電極端子が対応する様に熱圧
着させ、且つ上記フレキシブルフィルムと基板周辺とを
接着剤で相互に接着することを特徴とする液晶表示素子
。1. A liquid crystal material is placed between an upper substrate made of a plastic film and a lower substrate with electrodes on opposing surfaces, the upper substrate is shorter than the lower substrate, and the electrode terminals are taken out on the protruding part of the lower substrate. In a liquid crystal display element having a plurality of parts, a flexible film with electrode terminals is thermocompressed to the electrode terminal extraction part so that the respective electrode terminals correspond to each other, and the flexible film and the periphery of the substrate are bonded to each other with an adhesive. A liquid crystal display element characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17376283A JPS6064325A (en) | 1983-09-20 | 1983-09-20 | Liquid crystal display element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17376283A JPS6064325A (en) | 1983-09-20 | 1983-09-20 | Liquid crystal display element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6064325A true JPS6064325A (en) | 1985-04-12 |
Family
ID=15966670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17376283A Pending JPS6064325A (en) | 1983-09-20 | 1983-09-20 | Liquid crystal display element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6064325A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63144619U (en) * | 1987-03-13 | 1988-09-22 | ||
| US5155612A (en) * | 1989-06-09 | 1992-10-13 | Sharp Kabushiki Kaisha | Liquid crystal display device with light shield |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49126350A (en) * | 1973-04-03 | 1974-12-03 | ||
| JPS5065193A (en) * | 1973-10-11 | 1975-06-02 | ||
| JPS56121018A (en) * | 1980-02-28 | 1981-09-22 | Sharp Corp | Terminal treating method for multilayer liquid-crystal panel |
| JPS57208529A (en) * | 1981-06-19 | 1982-12-21 | Toshiba Corp | Plane type display element |
-
1983
- 1983-09-20 JP JP17376283A patent/JPS6064325A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49126350A (en) * | 1973-04-03 | 1974-12-03 | ||
| JPS5065193A (en) * | 1973-10-11 | 1975-06-02 | ||
| JPS56121018A (en) * | 1980-02-28 | 1981-09-22 | Sharp Corp | Terminal treating method for multilayer liquid-crystal panel |
| JPS57208529A (en) * | 1981-06-19 | 1982-12-21 | Toshiba Corp | Plane type display element |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63144619U (en) * | 1987-03-13 | 1988-09-22 | ||
| US5155612A (en) * | 1989-06-09 | 1992-10-13 | Sharp Kabushiki Kaisha | Liquid crystal display device with light shield |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4500171A (en) | Process for plastic LCD fill hole sealing | |
| JPS6064325A (en) | Liquid crystal display element | |
| JPS59193773A (en) | Weld bond method | |
| JPH07140479A (en) | Lcd unit | |
| JP2000284296A (en) | Liquid crystal display device | |
| JP2008076930A (en) | Display device and manufacturing method therefor | |
| JP2621787B2 (en) | Manufacturing method of liquid crystal display | |
| JPH05100238A (en) | Packaging structure for liquid crystal panel | |
| KR100349910B1 (en) | Multi display device and method for making the same | |
| JPS62159125A (en) | Manufacture of liquid crystal display device | |
| JP3206725B2 (en) | Liquid crystal display device | |
| JPH0561028A (en) | Liquid crystal display element | |
| JPH1062803A (en) | Liquid crystal display device | |
| JPH0532736B2 (en) | ||
| JPH0277019A (en) | Electrooptical device and conductive connecting method | |
| JP2534144Y2 (en) | Liquid crystal display device | |
| JPH11249124A (en) | Production of liquid crystal display panel | |
| JPH0376000B2 (en) | ||
| JP2780215B2 (en) | Liquid crystal display | |
| JPH0460612A (en) | Liquid crystal display device and its manufacture | |
| JPH06168981A (en) | Method of mounting semiconductor element | |
| JP3517947B2 (en) | Liquid crystal display device and method of manufacturing the same | |
| JPH06110075A (en) | Liquid crystal display device and its manufacture | |
| JPS63123015A (en) | Manufacture of curved surface liquid crystal cell | |
| JPS6270814A (en) | Liquid crystal element |