JPS59189321A - Liquid crystal display element - Google Patents

Liquid crystal display element

Info

Publication number
JPS59189321A
JPS59189321A JP6361383A JP6361383A JPS59189321A JP S59189321 A JPS59189321 A JP S59189321A JP 6361383 A JP6361383 A JP 6361383A JP 6361383 A JP6361383 A JP 6361383A JP S59189321 A JPS59189321 A JP S59189321A
Authority
JP
Japan
Prior art keywords
film
orientation
liquid crystal
org
high polymer
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
JP6361383A
Other languages
Japanese (ja)
Inventor
Kiyoshige Kinugawa
清重 衣川
Yoshio Hanada
花田　良雄
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP6361383A priority Critical patent/JPS59189321A/en
Publication of JPS59189321A publication Critical patent/JPS59189321A/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
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/133711—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by organic films, e.g. polymeric films

Abstract

PURPOSE:To obtain a controlling film for orientation having good regulating power for orientation, electrical insulating characteristic and mechanical strength with a relatively thin film thickness by impregnating an org. high polymer film in a porous inorg. insulating film thereby forming the controlling film for orientation. CONSTITUTION:An org. high polymer which is easily decomposable at a low temp. is mixed with a dip coating liquid crystal consisting essentially of silicon hydroxide and an org. solvent, and the mixture composed thereof is coated on an electrode substrate 1 by a spinner, etc. and is calcined. The silicon hydroxide and org. high polymer film are then decomposed and a porous silicon dioxide film, i.e., a porous inorg. insulating film 7 is obtd. If an inorg. high polymer film or monomer thereof is coated thereon and is calcined, an org. high polymer film 6 is impregnated in the film 7. The surface which contacts with the liquid crystal is the film 6 according to such structure and therefore the regulating power for orientation is strong. The controlling film for orientation is made into the structure in which the film 7 is used as skeleton and the film 6 is impregnated therein and therefore said film has good mechanical strength and electrical insulating characteristic. Since the film 7 and the film 6 are not divided to two layers, the formation of the film to a thin thickness over the entire part is made possible.

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シ、特に電極基板上に形成さ
れた配向制御膜の改良に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a liquid crystal display element, and more particularly to improvement of an alignment control film formed on an electrode substrate.

〔発明の背景〕[Background of the invention]

液晶表示素子は、第１図に示すように、２枚の透明な電
極基板１、ｌを対向させ、周囲をシール材２により接着
し、内部に液晶３を封入してなる。As shown in FIG. 1, the liquid crystal display element is made up of two transparent electrode substrates 1, 1 facing each other, the periphery of which is adhered with a sealing material 2, and a liquid crystal 3 sealed inside.

また前記電極基板ＩＳ　１の対向面には、第２図および
第３図に示すように透明電極今が形成され、その上に配
向制御膜として、８ｉ（ｈなどの無機絶縁膜５またはポ
リイミドなどの有機高分子膜６が形成されている。Further, on the opposing surface of the electrode substrate IS 1, a transparent electrode is formed as shown in FIGS. An organic polymer film 6 is formed.

しかしながら、無１機絶縁膜５は、機械的強度は大きい
が、配向規制力、電気絶縁性に劣る。有機高分子膜６は
、逆に配向規制力、電気絶縁性は良いが、機械的強度が
弱い。However, although the inorganic insulating film 5 has high mechanical strength, it is inferior in alignment regulating power and electrical insulation. On the contrary, the organic polymer film 6 has good alignment regulating power and electrical insulation, but has low mechanical strength.

そこで、両者の欠点を補うために、第４図に示すように
、無機絶縁膜５と有機高分子膜６を積層する方法が知ら
れている。しかしながら、この構造は全体の膜厚が厚く
なるので、外部から印加した電圧がこの厚い配向制御膜
で電圧降下し、電気光学特性が劣化するという欠点を有
する。Therefore, in order to compensate for the drawbacks of both, a method is known in which an inorganic insulating film 5 and an organic polymer film 6 are laminated, as shown in FIG. However, this structure has the disadvantage that the overall film thickness is large, and therefore the voltage applied from the outside drops across this thick alignment control film, resulting in deterioration of electro-optical characteristics.

〔発明の目的〕[Purpose of the invention]

本発明の目的は、比較的博い膜厚で、配向規制力、電気
的絶縁性および機械的強度の良い配向制御膜を有する液
晶表示素子を提供することにある。An object of the present invention is to provide a liquid crystal display element having an alignment control film that is relatively thick and has good alignment control ability, electrical insulation, and mechanical strength.

〔発明の概要〕[Summary of the invention]

本発明は、多孔質の無機絶縁膜に有機高分子膜を含浸さ
せて配向制御膜を形成したことを特徴とする。The present invention is characterized in that an alignment control film is formed by impregnating a porous inorganic insulating film with an organic polymer film.

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

以下、本発明の一実施例を第５図および第６図により説
明する。なお、第１図〜第４図と同じ部材には同一符号
を付し、その説明を省略する。配向制御膜は、多孔質の
無機絶縁膜７に有機高分子膜６を含浸させた構造よりな
る。An embodiment of the present invention will be described below with reference to FIGS. 5 and 6. Note that the same members as in FIGS. 1 to 4 are designated by the same reference numerals, and their explanations will be omitted. The alignment control film has a structure in which a porous inorganic insulating film 7 is impregnated with an organic polymer film 6.

かかる構造は次のようにして得られる。水酸化シリコン
（５ｉ（ＯＨ）４）と有機溶媒を主成分とする浸漬塗布
液晶に低温で分解し易い有機高分子を混合し、スピンナ
ーなどで電極基板ｌ上に塗布し焼成する。これによ如、
水酸化シリコンおよび有機高分子膜は分解し、多孔質の
２酸化シリコン（Ｓｉ　０２）膜、すなわち多孔質の無
機絶縁膜７が得られる。Such a structure is obtained as follows. Dip coating liquid crystal containing silicon hydroxide (5i(OH)4) and an organic solvent as main components is mixed with an organic polymer that easily decomposes at low temperatures, and the mixture is coated onto the electrode substrate l using a spinner or the like and baked. According to this,
The silicon hydroxide and organic polymer film are decomposed to obtain a porous silicon dioxide (Si 02) film, that is, a porous inorganic insulating film 7.

この上に有機高分子膜またはそのモノマーを塗布し焼成
すると、多孔質の無機絶縁膜７に有機高分子膜６が含浸
される。When an organic polymer film or its monomer is applied thereon and baked, the porous inorganic insulating film 7 is impregnated with the organic polymer film 6.

この構造によれば、液晶に接する表面は有機高分子膜６
であるので、配向規制力が強い。また配向制御膜は、無
機絶縁膜７を骨格としてその中に有機高分子膜６が含浸
された構造であるので、機械的強度および電気的絶縁性
も良い。更に無機絶縁膜７と有機高分子膜６が２層に分
れていないので、全体の膜厚も薄く形成することができ
る。According to this structure, the surface in contact with the liquid crystal is an organic polymer film 6
Therefore, the orientation regulating force is strong. In addition, since the alignment control film has a structure in which the inorganic insulating film 7 is used as a skeleton and the organic polymer film 6 is impregnated therein, it has good mechanical strength and electrical insulation. Furthermore, since the inorganic insulating film 7 and the organic polymer film 6 are not separated into two layers, the overall film thickness can be made thinner.

〔発明の効果〕〔Effect of the invention〕

本発明によれば、比較的薄い膜厚で、配向規制力、電気
的絶縁性および機械的強度の良い配向制御膜が得られる
。すなわち、膜厚が薄いので、電気光学物性の劣化が少
ない。まだ配向規制力および電気的杷虜ご性が良いので
、品質が向上する。また機械的強度が大きいので、配向
制御膜の損傷が少なく、この点からも品質が向上する。According to the present invention, it is possible to obtain an orientation control film having a relatively thin film thickness and having good orientation regulating power, electrical insulation properties, and mechanical strength. That is, since the film thickness is thin, there is little deterioration of electro-optical properties. It still has good orientation control and electrical restraint, so the quality is improved. Furthermore, since the mechanical strength is high, there is little damage to the alignment control film, and quality is improved from this point as well.

また液晶を配向させる実効的な有機高分子膜の膜厚が小
さいため、液晶分子の配向のチルト角が小さく、電気光
学特性が向上する。Furthermore, since the effective thickness of the organic polymer film for orienting the liquid crystal is small, the tilt angle for the orientation of the liquid crystal molecules is small, and the electro-optical properties are improved.

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

第１図は液晶表示素子の断面図、第２図、第３図、第４
図はそれぞれ従来の配向制御膜の断面図、第５図は本発
明の一実施例を示す配向制御膜の断面図、第６図は第５
図のＡ部の拡大図である。 ！・・・・電極基板、２・・・・シール材、３・・・・
液−１％　４・・・・透明電極、６・・・・有機高分子
膜、７・・・・無機絶縁膜。 　３− 弔２図 ダ 　４−Figure 1 is a cross-sectional view of a liquid crystal display element, Figures 2, 3, and 4.
The figures are a cross-sectional view of a conventional alignment control film, FIG. 5 is a cross-sectional view of an alignment control film showing an embodiment of the present invention, and FIG.
It is an enlarged view of part A of the figure. ! ...Electrode substrate, 2...Sealing material, 3...
Liquid-1% 4...Transparent electrode, 6...Organic polymer film, 7...Inorganic insulating film. 3- Funeral diagram 2 4-

Claims (1)

【特許請求の範囲】[Claims] 電極および配向制御膜が形成された２枚の電極基板ケシ
ール材でシールし、内部に液晶を封入した液晶表示索子
において、前記配向制御膜は、多孔質の無機絶縁、膜に
有機高分子膜を含浸させてなる液晶表示索子。In a liquid crystal display module in which two electrode substrates on which electrodes and an alignment control film are formed are sealed with a casing material and a liquid crystal is sealed inside, the alignment control film is a porous inorganic insulator, and the film is an organic polymer film. A liquid crystal display screen impregnated with
JP6361383A 1983-04-13 1983-04-13 Liquid crystal display element Pending JPS59189321A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6361383A JPS59189321A (en) 1983-04-13 1983-04-13 Liquid crystal display element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6361383A JPS59189321A (en) 1983-04-13 1983-04-13 Liquid crystal display element

Publications (1)

Publication Number Publication Date
JPS59189321A true JPS59189321A (en) 1984-10-26

Family

ID=13234324

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6361383A Pending JPS59189321A (en) 1983-04-13 1983-04-13 Liquid crystal display element

Country Status (1)

Country Link
JP (1) JPS59189321A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61205925A (en) * 1985-03-08 1986-09-12 Fujitsu Ltd Processing method of transparent electrode

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61205925A (en) * 1985-03-08 1986-09-12 Fujitsu Ltd Processing method of transparent electrode

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