JPS5830727A - Liquid crystal display device - Google Patents
Liquid crystal display deviceInfo
- Publication number
- JPS5830727A JPS5830727A JP56129864A JP12986481A JPS5830727A JP S5830727 A JPS5830727 A JP S5830727A JP 56129864 A JP56129864 A JP 56129864A JP 12986481 A JP12986481 A JP 12986481A JP S5830727 A JPS5830727 A JP S5830727A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- display device
- polyimide resin
- orientation
- 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
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 23
- 229920001721 polyimide Polymers 0.000 claims abstract description 18
- 239000009719 polyimide resin Substances 0.000 claims abstract description 18
- 239000000758 substrate Substances 0.000 claims abstract description 16
- 239000011521 glass Substances 0.000 claims abstract description 15
- 239000000853 adhesive Substances 0.000 claims abstract description 8
- 230000001070 adhesive effect Effects 0.000 claims abstract description 8
- -1 polysiloxane Polymers 0.000 claims abstract description 8
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 8
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 5
- 210000002858 crystal cell Anatomy 0.000 abstract 1
- 239000011347 resin Substances 0.000 abstract 1
- 229920005989 resin Polymers 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 230000007547 defect Effects 0.000 description 2
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
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
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は液晶表示装置、さらに詳しくはポリイミド系樹
脂を用いた液晶表示装置の改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a liquid crystal display device, and more particularly to an improvement in a liquid crystal display device using a polyimide resin.
従来、液晶表示装置には配向処理剤としてポリイミド樹
脂を使用する場合が多くある。これは、ポリイミド樹脂
の被膜が、はとんどの液晶物質に対して良好な配向特性
を有しているという特徴によるものである。Conventionally, polyimide resin is often used as an alignment treatment agent in liquid crystal display devices. This is due to the fact that the polyimide resin coating has good alignment properties for most liquid crystal materials.
ところが、本来ポリイミド樹脂はガラス基板に対する接
着性が弱い。そのため、高温・高湿条件下でガラス基板
とポリイミド樹脂の界面より水分が浸入し、この水分の
ために液晶素子点灯時に表示文字部分にふくらみ現象の
発生することがあった。この現象を防止するため、ポリ
イミド樹脂とガラス基板の接着面に、例えばシラン系カ
ップリング剤又は酸化ケイ素、酸化アルミニウム、酸化
チタン等の金属酸化物の被膜（下地処理膜）を形成して
ポリイミド樹脂とガラス基板の接着性を向上させ、且つ
、相対向するガラス基板を接合している接着剤よりも液
晶表示素子内部にポリイミド樹脂を形成させることが一
般的である。However, polyimide resin originally has weak adhesion to glass substrates. Therefore, under high-temperature and high-humidity conditions, moisture may infiltrate from the interface between the glass substrate and the polyimide resin, and this moisture may cause a bulging phenomenon in the displayed character portion when the liquid crystal element is turned on. To prevent this phenomenon, a film (base treatment film) of a silane coupling agent or a metal oxide such as silicon oxide, aluminum oxide, titanium oxide, etc. is formed on the adhesive surface of the polyimide resin and the glass substrate. In order to improve the adhesion between the glass substrates and the glass substrates, it is common to form a polyimide resin inside the liquid crystal display element rather than the adhesive used to bond the opposing glass substrates.
しかし、上記のような対策を施しても、前記下地処理膜
の特性として液晶への配向性が悪いことにより接着剤と
ポリイミド樹脂形成領域の間に配向不良部が発生し、有
効液晶表示領域が狭くなり又、信頼性試験をはじめ時間
経過に伴ってその配向不良部が正常な配向をするポリイ
ミド樹脂領域に拡大してますます有効液晶表示領域が減
少する欠点があった。However, even if the above-mentioned measures are taken, due to the poor orientation of the liquid crystal as a characteristic of the base treatment film, an alignment defect occurs between the adhesive and the polyimide resin forming area, and the effective liquid crystal display area is reduced. Furthermore, as time passes during reliability tests, the defective alignment area expands into the normally oriented polyimide resin area, further reducing the effective liquid crystal display area.
本発明は、上記の欠点をなくす目的で提出された０
本発明に係る液晶表示装置の実施例を組図に掲げる。第
４図の如く本発明は、ポリイミド樹脂１を相対向するガ
ラス基板２を接合する接着剤３よりも液晶表示素子内部
に形成し、且つ、ポリイミド樹脂１の下地処理としてラ
ザー型ポリシロキサ／膜４を形成して作られた液晶表示
装置である。The present invention has been proposed for the purpose of eliminating the above-mentioned drawbacks. An assembly diagram of an embodiment of a liquid crystal display device according to the present invention is presented. As shown in FIG. 4, in the present invention, a polyimide resin 1 is formed inside a liquid crystal display element rather than an adhesive 3 for bonding opposing glass substrates 2, and a lather type polysiloxane/film 4 is used as a base treatment for the polyimide resin 1. This is a liquid crystal display device made by forming a .
！＝１図中、５は液晶、６は透明導電膜である。! =1 In the figure, 5 is a liquid crystal and 6 is a transparent conductive film.
本発明で使用するラザー型ポリシロキサン膜４このラザ
ー型ポリシロキサン膜４は、液晶物質に対して良好な配
向特性を持つ。なお、ラザー型ポリシロキサン膜４は、
必ずしも第４図のようにガラス基板２全体をおおう必要
はなく、ポリイミド樹脂１および透明導電膜６とガラス
基板２との間隙だけに被覆させても良い。Lather type polysiloxane film 4 used in the present invention This lather type polysiloxane film 4 has good alignment properties for liquid crystal substances. Note that the rather-type polysiloxane film 4 is
It is not necessarily necessary to cover the entire glass substrate 2 as shown in FIG. 4, but only the gap between the polyimide resin 1 and the transparent conductive film 6 and the glass substrate 2 may be covered.
以上のような本発明の液晶表示素子は、ポリイミド樹脂
を用いた液晶表示素子として優れた配向特性、耐ディス
クリネーション特性、耐ＤＣ特性。The liquid crystal display element of the present invention as described above has excellent alignment properties, disclination resistance properties, and DC resistance properties as a liquid crystal display element using polyimide resin.
表示品位および信頼性を有し、且つ、表示文字のふくら
み現象がなく、相対向するガラス基板を接合する接着剤
近傍に配向不良部の発生しない広い有効表示領域を持つ
効果がある。It has the effect of having a wide effective display area that has high display quality and reliability, does not cause the bulge phenomenon of displayed characters, and does not cause alignment defects in the vicinity of the adhesive that joins opposing glass substrates.
壽→図は本発明に係る液晶表示装置の一実施例の断面図
である。
１・・・ポリイミド樹脂、２・・・ガラス基板、３・・
・接着剤、４・・・ラザー型ポリシロキサン膜、５・・
液晶。
６・透明導電膜。
代理人 弁理士 福 士 愛 彦The figure is a sectional view of an embodiment of a liquid crystal display device according to the present invention. 1... Polyimide resin, 2... Glass substrate, 3...
・Adhesive, 4... Lazar type polysiloxane film, 5...
liquid crystal. 6.Transparent conductive film. Agent Patent Attorney Aihiko Fukushi
Claims (1)
ス基板を接合する接着剤よりも液晶表示素子内部に形成
し、且つ、上記ポリイミド系樹脂の下地処理剤としてガ
ラス基板上にラザー型ポリシロキサン膜を形成して成る
ことを特徴とする液晶表示装置。1. A polyimide resin as an alignment treatment agent is formed inside the liquid crystal display element rather than an adhesive that joins opposing glass substrates, and a lather type polysiloxane is formed on the glass substrate as a base treatment agent for the polyimide resin. A liquid crystal display device characterized by forming a film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56129864A JPS5830727A (en) | 1981-08-18 | 1981-08-18 | Liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56129864A JPS5830727A (en) | 1981-08-18 | 1981-08-18 | Liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5830727A true JPS5830727A (en) | 1983-02-23 |
Family
ID=15020159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56129864A Pending JPS5830727A (en) | 1981-08-18 | 1981-08-18 | Liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5830727A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180326530A1 (en) * | 2015-12-28 | 2018-11-15 | Hitachi Metals, Ltd. | Clad material and electronic device housing |
-
1981
- 1981-08-18 JP JP56129864A patent/JPS5830727A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180326530A1 (en) * | 2015-12-28 | 2018-11-15 | Hitachi Metals, Ltd. | Clad material and electronic device housing |
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