JPS60181730A - Liquid crystal display device - Google Patents

Liquid crystal display device

Info

Publication number
JPS60181730A
JPS60181730A JP3617384A JP3617384A JPS60181730A JP S60181730 A JPS60181730 A JP S60181730A JP 3617384 A JP3617384 A JP 3617384A JP 3617384 A JP3617384 A JP 3617384A JP S60181730 A JPS60181730 A JP S60181730A
Authority
JP
Japan
Prior art keywords
liquid crystal
resin
crystal display
sealant
sealing material
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
Application number
JP3617384A
Other languages
Japanese (ja)
Inventor
Junji Nakajima
中島　純治
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP3617384A priority Critical patent/JPS60181730A/en
Publication of JPS60181730A publication Critical patent/JPS60181730A/en
Pending legal-status Critical Current

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
    • G02F1/1339—Gaskets; Spacers; Sealing of cells

Abstract

PURPOSE:To prevent disturbance of orientation of liquid crystal molecules near a sealant without lowering sealing strength by using a specified modified epoxy one-component type adhesive for both base plates each using a polyimide film as a liquid crystal orienting film to fabricate a cell. CONSTITUTION:A display electrode 3 and a backside electrode 4 are formed on the inside of both of a front base 1 and a back base 2 opposite to each other, and both electrodes 3, 4 are coated with a polyimide resin to form a liquid crystal orienting films 5. The surrounding part of the bases 1, 2 are fabricated by using as a sealant a modified epoxy resin prepared by graft polymerizing a silicone resin with a bisphenol A type resin, and as a hardening agent a modified epoxy one-component type adhesive using adipic acid dihydride or the like so as to prevent disturbance of the liquid crystal molecules near and in contact with the sealant 6. The films 5 and the sealant 16 are in contact with each other or they are partly overlapped each other, thus permitting the disturbance of the liquid crystals to be prevented and a liquid crystal display device good in quality to be obtained.

Description

【発明の詳細な説明】 【発明の技術分野〕 本発明は液晶表示器に係シ、特に液晶配向膜をそれぞれ
塗布してなる前面基板及び背面基板を５乃至１５μｍの
一定間隔を設けてシール材によシ胆立てるに際し、特殊
なシール材を用いることにより、接着強度を弱めること
なく、かつシール材に接触する近傍の液晶分子の配向を
乱すことのない液晶表示器に関するものである。Detailed Description of the Invention [Technical Field of the Invention] The present invention relates to a liquid crystal display, and particularly relates to a front substrate and a rear substrate each coated with a liquid crystal alignment film, which are coated with a sealing material at a constant interval of 5 to 15 μm. The present invention relates to a liquid crystal display that uses a special sealant to improve its performance, without weakening the adhesive strength and without disturbing the orientation of liquid crystal molecules in the vicinity of the sealant.

〔発明の技術的背穿とその問題点〕[Technical background of the invention and its problems]

通常の液晶表示器は第１図に示すような構造を有してい
る。A typical liquid crystal display has a structure as shown in FIG.

即ち、前面基板（１）と背面基板（２）の互いに対向す
る内面にそれぞれ透明電極材よシ威る表示電極（３）と
背面電１（４）を形成し、これら電極ｆ３）　（４）上
をそれぞれ液晶配向材であるポリイミド樹脂を塗布して
液晶配向膜（５）としている。このような構成の前面基
板（１）と背面基板（２）は周縁部をシール材（６）を
使用して５乃至１５μｍの一定間隔を有するように組立
て、この一定間隔部に液晶を注入封止して液晶表示器を
完成する。That is, a display electrode (3) and a back electrode 1 (4) made of a transparent electrode material are formed on the mutually opposing inner surfaces of a front substrate (1) and a back substrate (2), respectively, and these electrodes f3) (4) are formed. A polyimide resin, which is a liquid crystal aligning material, is applied to the top of each layer to form a liquid crystal aligning film (5). The front substrate (1) and the rear substrate (2) having such a configuration are assembled using a sealing material (6) at the peripheral edge so as to have a constant interval of 5 to 15 μm, and liquid crystal is injected and sealed into this constant interval. to complete the liquid crystal display.

然るに従来からシール材（６）に一般に用いられている
ビスフェノール人糸の樹脂を用い、脂肪ｉまたは芳香族
アミンを硬化剤として使用した場合、またはフェノール
ノボラック系樹脂にジアミノフェニルメタン等を硬化剤
として便石した、所謂２液型工ポキシ樹脂接着剤を使用
する場合には第１図に示すように液晶配向膜（５）とシ
ール材（６）とは、このシール材（６）に接触する周辺
部の液晶分子の配向の乱れを防止するためと、シール材
（６）の接着強度の低下を防止するために０５乃至２　
ｉｎ程度の間隔を設けなければならなかった。However, when using bisphenol resin, which has been commonly used for sealing materials (6), and using fatty acids or aromatic amines as a curing agent, or when diaminophenylmethane or the like is used as a curing agent for phenol novolak resin, When using a so-called two-component poxy resin adhesive, the liquid crystal alignment film (5) and the sealing material (6) come into contact with this sealing material (6) as shown in FIG. 05 to 2 to prevent the alignment of liquid crystal molecules in the peripheral area from being disturbed and to prevent the adhesive strength of the sealing material (6) from decreasing.
It was necessary to provide an interval of approximately

このため、液晶表示器の製造工程において、液晶配向膜
（５）とシール材（６）との間隔を０．５乃至２−程度
にすることが極めて重要であり、シール材（６）として
の２液型工ポキシ樹脂着剤の塗布が極めて内軸であるば
かりでなく、液晶表示器として大型になり易い問題点が
あった。For this reason, in the manufacturing process of liquid crystal displays, it is extremely important to keep the distance between the liquid crystal alignment film (5) and the sealing material (6) approximately 0.5 to 2-2. Not only was the application of the two-component poxy resin adhesive extremely slow, but there was also the problem that the liquid crystal display tended to be large.

〔発明の目的〕[Purpose of the invention]

本発明は前述の間組点に鑑みなされたものであり、液晶
配向膜とシール材とが接触または一部が１ね合わせた構
造にしてもシール材による接着強度を弱めることなく、
またシール材に接触する近傍の液晶分子の配向を乱すこ
とのない液晶表示器を提供することを目的としている。The present invention has been made in view of the above-mentioned problem, and even if the liquid crystal alignment film and the sealing material are in contact with each other or in a structure in which a part of the sealing material is overlapped, the adhesive strength of the sealing material is not weakened.
Another object of the present invention is to provide a liquid crystal display device that does not disturb the orientation of liquid crystal molecules in the vicinity of contact with the sealing material.

〔発明の概要〕[Summary of the invention]

即ち、本発明は、液晶配向膜としてポリイミド樹脂をそ
れぞれ塗布してなる前面基板及び背面基板とをシーノシ
拐としてビスフェノールＡ型樹脂にシリコーン樹脂をグ
ラフ、ト重合させた変性エポキシ樹脂、硬化剤としてア
ジピン酸ジハイドラジドまたは類似化合物を使用した変
性エポキシ糸１液型接着剤を使用して組立ててなり、前
記シール材と接触する近傍の液晶分子の配向の乱れを肋
止し得るようになされていることを特数としており、液
晶配向膜とシール材とが接触または一部が１ね合せた構
造を有していることを実施態様としている。That is, the present invention uses a modified epoxy resin obtained by graph-polymerizing a silicone resin with a bisphenol A type resin, and adipine as a curing agent. It is assembled using a modified epoxy thread one-component adhesive using acid dihydrazide or a similar compound, and is designed to prevent disordered orientation of liquid crystal molecules in the vicinity of contact with the sealing material. The liquid crystal aligning film and the sealing material are in contact with each other, or have a structure in which a portion of the liquid crystal alignment film and the sealing material are combined with each other.

〔発明の実施例〕[Embodiments of the invention]

次に本発明の液晶表示器の一実施例を第２図により説明
する。図中第１図と同一符号は同一部を示す。Next, one embodiment of the liquid crystal display of the present invention will be described with reference to FIG. In the figure, the same reference numerals as in FIG. 1 indicate the same parts.

即ち、前面基板（１）と背面基板（２）の互いに対向す
る内面にそれぞれ透明電極材より取る表示電極（３）と
背面電極（４）を形成し、これら電極（３）（４）をそ
れぞれ液晶配向材であるポリイミド樹脂を塗布して液晶
配向膜（５）としている。このような構成の前面基板（
１）と背Ｅｆｉ＋基板（２）は周縁部をシール材ｔｔｅ
を使用して５乃至１５μｍの一定間隔を有するように組
立て、この一定間隔部に液晶を注入封止して液晶表示器
を構成する。That is, a display electrode (3) and a back electrode (4) made of a transparent electrode material are formed on the mutually opposing inner surfaces of a front substrate (1) and a back substrate (2), respectively. Polyimide resin, which is a liquid crystal alignment material, is applied to form a liquid crystal alignment film (5). The front board with this configuration (
1) and the back Efi + board (2) are covered with sealing material tte on the periphery.
A liquid crystal display device is constructed by assembling the liquid crystals at regular intervals of 5 to 15 μm, and injecting and sealing liquid crystal into the regular interval parts.

ここ迄は従来の液晶表示器とほぼ同様であるが、本実施
例においては、シール材任６）としてビスフェノールＡ
ｉ樹脂にシリコーン樹脂をグラフト１合させた変エポキ
シ樹脂、硬化剤としてアジピン酸ジハイドラジドまたは
その類似化合物を使用した変性エポキシ系１液型接着剤
例えば三井東圧化学■製のストラクトボンドＥｓ−５５
００を使用することにより、前面基板（１）と背面基板
（２）の互いに対向する内面の液晶配向膜（５）と、シ
ール材（ｔ６１の一部を重ね合わせても、このシール材
［６１と接触する近傍の液晶分子の配向の乱れを防止し
得るし、また接着力の低下もほとんどｋめられなかった
。Up to this point, it is almost the same as a conventional liquid crystal display, but in this example, bisphenol A is used as the sealing material 6).
A modified epoxy resin made by grafting a silicone resin onto an i-resin, and a modified epoxy one-component adhesive using adipic acid dihydrazide or a similar compound as a curing agent.For example, Structbond Es-55 manufactured by Mitsui Toatsu Chemical Co., Ltd.
By using 00, even if a part of the sealing material (t61) is overlapped with the liquid crystal alignment film (5) on the mutually opposing inner surfaces of the front substrate (1) and the back substrate (2), this sealing material [61 It is possible to prevent the alignment of liquid crystal molecules in the vicinity of contact with the liquid crystal molecules from being disturbed, and there was hardly any decrease in adhesive strength.

次に具体例を説明する。Next, a specific example will be explained.

第１の具体例は通常の工業用計器等の表示器として使用
する数字表示用小楯液晶表示器用セルを作る場合、スク
リーン印刷法により、シール材であるストラクトボンド
ｌｆｓ　５５００をＱ、　３　ａｍの幅に前面基板に印
刷し、印刷済の基板を９０℃、３０分間ドライオープン
中で乾燥し、シール材中に含まれている溶剤を完全に除
去した後、１００ｇ／ｃ＋ｎ”の圧力をかけて背面基板
と７μｍの間隔をもたせて接着させ、１８０℃、６０分
間焼成してシール材を硬化させ、液晶表示器用セルを組
立てる。The first specific example is when making a cell for a numerical display small shield liquid crystal display used as a display for ordinary industrial meters, etc., using a screen printing method to make a sealing material, Structbond LFS 5500, into a Q, 3 am width. After printing on the front substrate and drying the printed substrate in a dry open at 90°C for 30 minutes to completely remove the solvent contained in the sealant, apply a pressure of 100g/c+n'' to the back side. It is adhered to the substrate with a gap of 7 μm, and baked at 180° C. for 60 minutes to harden the sealing material, and a liquid crystal display cell is assembled.

第２の具体例は、主としてハンドベルトコンピュータな
どの表示器として使用するドツトマトリクスタイプの大
型液晶表示器用セルを作る場合、シール拐であるストラ
クトボンドＥＳ−５５００をスクリーン印刷法により前
面基板にｌ　＃１ｍの幅に印Ｉｌｊし、印刷済の基板を
９０℃、６０分間ドライオープン中で乾燥し、シール材
中に含まれている溶剤を完全に除去した抜３００　ｇＡ
：１＋どの圧力をかけて外面基板と１０μｍの間隔なも
たせて接着させ、１８０°０，９０分間焼成してシール
材を硬化させ大型液晶表示器用セルを組立てる。In the second specific example, when making a dot matrix type large liquid crystal display cell mainly used as a display device for hand belt computers, etc., Structbond ES-5500, which is a seal strip, is printed on the front substrate by screen printing. The printed board was dried at 90°C for 60 minutes in a dry open oven to completely remove the solvent contained in the sealant.
: 1+Apply any pressure to adhere to the outer substrate with a gap of 10 μm, bake at 180° for 90 minutes to harden the sealing material, and assemble a cell for a large liquid crystal display.

上述した２つの具体例の液晶表示器用セル、大型液晶表
示器用セルにそれぞれ′１′Ｎ型液晶を注入刺止して液
晶表示器を組立て、温度８０”Ｏ，湿度９０チの高温、
高湿テスト及び紫外線照射テスト等を行ったが、いずれ
も異状は発生せず、また特にシール材と接触する近傍の
液晶分子の配向の乱れは全く認められなかった。またシ
ール材の接着強度は、いずれも４０　Ｆ−ｙ／ｃｎＦ以
上の高い接着力を示し、この接着力は高温、高湿テスト
、及び紫外線照射テス）ｌもほとんど変化がなかった。A liquid crystal display was assembled by injecting and fixing '1'N type liquid crystal into the liquid crystal display cell and the large liquid crystal display cell of the two specific examples mentioned above, and then heated to a high temperature of 80''O and a humidity of 90℃.
A high-humidity test and an ultraviolet irradiation test were conducted, but no abnormalities occurred in either case, and in particular, no disturbance in the alignment of liquid crystal molecules near the area in contact with the sealing material was observed. In addition, the adhesive strength of the sealing materials all showed a high adhesive strength of 40 F-y/cnF or more, and this adhesive strength showed almost no change in the high temperature, high humidity test, and ultraviolet irradiation test.

前述した実施例では液晶配向膜とシール材の一部が１ね
合せた構造としたが、これに限定されるものではなく、
接触する程度または従来と同線に離間させてもよいこと
は勿論である。In the above-mentioned embodiment, the liquid crystal alignment film and a part of the sealing material were combined into one structure, but the structure is not limited to this.
Of course, they may be spaced apart to the extent that they touch each other or on the same line as in the conventional case.

〔発明の交ｌ呆〕[Interchangeable invention]

上述のように本発明によれはシール材と接触する近傍の
液晶分子のし向の乱れを防止することが出来るので、ｂ
めて品位の良好な液晶表示器を提供できる。As described above, according to the present invention, it is possible to prevent the orientation of liquid crystal molecules in the vicinity of contact with the sealing material from being disturbed.
Therefore, it is possible to provide a liquid crystal display device with good quality.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来の液晶表示器の説明用断面図、第２図は本
発明の液晶表示器の一実施例の説明用断面図である。 １・・前面基板　２・背面基板 ３・表示電極　４・・背面電極 ５・・液晶配向膜　６，１６　シール材代理人　弁理士
　井　上　−男FIG. 1 is an explanatory cross-sectional view of a conventional liquid crystal display, and FIG. 2 is an explanatory cross-sectional view of an embodiment of the liquid crystal display of the present invention. 1.Front substrate 2.Back substrate 3.Display electrode 4..Back electrode 5..Liquid crystal alignment film 6,16 Seal material agent Patent attorney Inoue -Male

Claims (2)

【特許請求の範囲】[Claims] （１）　液晶配向膜としてポリイミド樹脂をそれぞれ塗
布してなる前面基板及び背面基板とをシール材としてビ
スフェノールＡ５樹脂にシリコーン樹脂をグラフト重合
させた変性エポキシ樹脂、硬化剤としてアジピン酸ジハ
イドラジドまたは類似金物を使用した変性エポキシ系１
液型接着剤を使用して組立ててなり、シール材と接触す
る近傍の液晶分子の配向の乱れを防止し得るようになさ
れていることを特許とする液晶表示器。(1) A front substrate and a rear substrate each coated with polyimide resin as a liquid crystal alignment film, a modified epoxy resin obtained by graft polymerizing silicone resin to bisphenol A5 resin as a sealing material, and adipic acid dihydrazide or similar metal material as a curing agent. Modified epoxy system used 1
A patented liquid crystal display that is assembled using a liquid adhesive and is designed to prevent the alignment of liquid crystal molecules in the vicinity of contact with a sealing material from being disturbed. （２）液晶配向膜とシール材が接触または一部が重ね合
せた構造を有している仁とを特徴とする特許請求の範１
ｔｌ第１狽記載の液晶表示器。(2) Claim 1 characterized by a layer having a structure in which the liquid crystal alignment film and the sealing material are in contact with each other or are partially overlapped.
The liquid crystal display described in TL No. 1.
JP3617384A 1984-02-29 1984-02-29 Liquid crystal display device Pending JPS60181730A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3617384A JPS60181730A (en) 1984-02-29 1984-02-29 Liquid crystal display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3617384A JPS60181730A (en) 1984-02-29 1984-02-29 Liquid crystal display device

Publications (1)

Publication Number Publication Date
JPS60181730A true JPS60181730A (en) 1985-09-17

Family

ID=12462350

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3617384A Pending JPS60181730A (en) 1984-02-29 1984-02-29 Liquid crystal display device

Country Status (1)

Country Link
JP (1) JPS60181730A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02136231U (en) * 1989-04-19 1990-11-14
JPH02296223A (en) * 1989-05-11 1990-12-06 Optrex Corp Liquid crystal display device
WO2000013059A1 (en) * 1998-08-31 2000-03-09 Seiko Epson Corporation Liquid crystal panel and method of manufacture thereof
US7554637B2 (en) 2004-08-27 2009-06-30 Samsung Electronics Co., Ltd. Liquid crystal display panel and display apparatus having the same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02136231U (en) * 1989-04-19 1990-11-14
JPH02296223A (en) * 1989-05-11 1990-12-06 Optrex Corp Liquid crystal display device
WO2000013059A1 (en) * 1998-08-31 2000-03-09 Seiko Epson Corporation Liquid crystal panel and method of manufacture thereof
US6989879B1 (en) * 1998-08-31 2006-01-24 Seiko Epson Corporation Liquid crystal panel and method of fabricating the same
US7554637B2 (en) 2004-08-27 2009-06-30 Samsung Electronics Co., Ltd. Liquid crystal display panel and display apparatus having the same

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