JPS62215928A - Liquid crystal display element - Google Patents
Liquid crystal display elementInfo
- Publication number
- JPS62215928A JPS62215928A JP5983286A JP5983286A JPS62215928A JP S62215928 A JPS62215928 A JP S62215928A JP 5983286 A JP5983286 A JP 5983286A JP 5983286 A JP5983286 A JP 5983286A JP S62215928 A JPS62215928 A JP S62215928A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- group
- film
- electron system
- display element
- 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 44
- 239000000758 substrate Substances 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- -1 etc. Substances 0.000 claims abstract description 11
- 125000001165 hydrophobic group Chemical group 0.000 claims abstract description 7
- 238000000151 deposition Methods 0.000 claims description 2
- 230000002209 hydrophobic effect Effects 0.000 claims description 2
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 abstract description 9
- BKXIGVQZLPZYLM-UHFFFAOYSA-N 15-phenyl pentadecanoic acid Chemical compound OC(=O)CCCCCCCCCCCCCCC1=CC=CC=C1 BKXIGVQZLPZYLM-UHFFFAOYSA-N 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 abstract description 3
- 239000011521 glass Substances 0.000 abstract description 2
- 239000004033 plastic Substances 0.000 abstract description 2
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 238000009830 intercalation Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 12
- 230000006866 deterioration Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000565 sealant Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005669 field effect Effects 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 239000004634 thermosetting polymer Substances 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000000243 solution Substances 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】
（産業上の利用分野）
この発明は、液晶表示素子の構成要素である液晶配向膜
に関づるものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a liquid crystal alignment film that is a component of a liquid crystal display element.
（発明の概要）
この発明は、液晶表示素子の構成要素である液晶配向膜
を形成する方法において、一般式で示される芳香族有機
化合物を、水面上に展開して膜を形成後、基板上に、π
電子系が表面に現われる形で、一層以上付看して、液晶
配向膜を形成することにより、従来のラビング法で外し
ていた配向膜表面の傷や膜厚の不均一、膜のはがれ、駆
ａ電極の破損と、それによる配向不良や表示素子の品質
低トを防ぐことが可能であり、ざらに真空装置が不要な
ため、量産性も高く、良好な液晶配向性を有する均一で
無欠陥である液晶配向膜を形成することが可能であり、
高品質の液晶表示素子を得る方法を与えるものである。(Summary of the Invention) This invention is a method for forming a liquid crystal alignment film, which is a component of a liquid crystal display element, in which an aromatic organic compound represented by the general formula is spread on a water surface to form a film, and then a film is formed on a substrate. In, π
By forming a liquid crystal alignment film with one or more layers in which the electronic system appears on the surface, scratches on the alignment film surface, uneven film thickness, film peeling, and drive removal that were removed by conventional rubbing methods can be avoided. It is possible to prevent damage to the a-electrode and the resulting poor alignment and quality deterioration of the display element, and since there is no need for vacuum equipment, mass production is high, and it is uniform and defect-free with good liquid crystal alignment. It is possible to form a liquid crystal alignment film that is
The present invention provides a method for obtaining high quality liquid crystal display elements.
（従来の技術）
液晶表示素子の表示方式には、
（ａ）ツイストネンｊイック電界効果型表示方工（、（
ｂ）誘起″ａＩＩＩｌＩＪ′ｒ電界効果型表示方式、（
ｃ） ｍ的散乱型表示方式、
（ｄ）ゲストホスト型二色表示方式、
（ｃ） Ｐｄ自自振梨型表示方式
などがあり、（ａ）の方式が広く実用化されている。(Prior art) The display methods of liquid crystal display elements include (a) twisted field effect display method (
b) Induced "aIIIlIJ'r field effect display system, (
There are c) m-type scattering display method, (d) guest-host type two-color display method, and (c) Pd self-oscillating pear-shaped display method, among which method (a) is widely put into practical use.
そして、液晶表示素子の配向膜には従来、（ａ）酸化ケ
イ素などの斜方蒸着膜、
（ｂ）表面処理膜、直鎖状高分子やＬボ１シ樹脂などの
熱硬化高分子膜をラビング処理したのもの、（Ｃ）耐熱
性良好なポリイミド等の膜をラビング処理したもの、
などが採用されてぎた。Conventionally, the alignment film of a liquid crystal display element includes (a) an obliquely evaporated film such as silicon oxide, (b) a surface treatment film, and a thermosetting polymer film such as a linear polymer or L-shaped resin. (C) Rubbed coatings with a film made of polyimide or the like with good heat resistance have been widely used.
（発明が解決しようとする問題点）
しかし、上記の配向膜は、いずれ６以下に述べる欠点を
有していた。(Problems to be Solved by the Invention) However, the above-mentioned alignment films all had the following drawbacks.
（ａ）酸化ケイ素などの斜方蒸着膜は、使用する液晶に
よって配向性に差があり、液晶によっては配向性が悪い
ものもある。また、視角特性もやや劣り、出産性も悪く
、コスト面ひも問題があった。(a) The orientation of an obliquely vapor deposited film such as silicon oxide differs depending on the liquid crystal used, and some liquid crystals have poor orientation. In addition, the viewing angle characteristics were somewhat inferior, the childbearing performance was poor, and there were problems in terms of cost.
（ｂ）表面処し！膜、直鎖状高分子や１ボキシ樹脂など
の熱硬化高分子膜は、封着剤、封止剤を加熱して封着や
封止作業を行う際に配向性が低下する。(b) Surface treatment! The orientation of a thermosetting polymer film such as a film, a linear polymer, or a 1-boxy resin decreases when sealing or sealing work is performed by heating the sealant or the sealant.
（Ｃ）ポリイミド膜は、配向性も良好Ｃあるが、ラビン
グによる配向膜表面の傷や膜厚の不均一、膜のはがれ、
駆動電極の破損により、配向不良や品質低下の問題を生
じていた。(C) Although the polyimide film has good orientation, there are scratches on the surface of the alignment film due to rubbing, uneven film thickness, and peeling of the film.
Damage to the drive electrode has caused problems such as poor alignment and quality deterioration.
そこでこの発明は、従来のこのような問題点を解決する
ため、均一で無欠陥かつ良好な配向性を右する、低コス
ト′Ｃ吊産性の高い液晶配向膜を１１することを口内と
している。Therefore, in order to solve these conventional problems, this invention aims to create a liquid crystal alignment film that is uniform, defect-free, and has good alignment properties and is low cost and has high productivity. .
（問題点を解決するための手段）
上記問題点を解決するために、この発明は、一般式
で示される芳香族有機化合物を、水面上にＪｌ開して膜
を形成後、基板上に、π電子系が表面に現われる形で、
−ｇ以上付看して、液晶配向膜を形成した。ただし、式
中のＸはπ電子系を有する樋、Ｙは疎水性基、２は親水
性基であり、場合によっては、Ｘ・Ｙがπ電子系を右す
る基、
Ｚが親水性基であり、またある場合は、Ｘが疎水性基で
、Ｙが親水性の強いπ電ｒ・系を有する基で２を含まず
、またある場合は、Ｘが疎水性の強いπ電子系を有する
基で、Ｙが親水性基で、２を含まない。(Means for Solving the Problems) In order to solve the above problems, the present invention provides an aromatic organic compound represented by the general formula on a water surface to form a film, and then depositing it on a substrate. With a π-electron system appearing on the surface,
-g or more, a liquid crystal alignment film was formed. However, in the formula, X is a group having a π-electron system, Y is a hydrophobic group, and 2 is a hydrophilic group. Yes, in some cases, X is a hydrophobic group, Y is a group having a strongly hydrophilic π-electron system and does not contain 2, and in some cases, X has a strongly hydrophobic π-electron system. group, where Y is a hydrophilic group and does not contain 2.
（作用）
上記のようにして形成された液晶配向膜は、均一で無欠
陥かつ良好な配向性有している。また、量産性も高い。(Function) The liquid crystal alignment film formed as described above is uniform, defect-free, and has good alignment. It is also highly mass-producible.
この配向膜を用いることにより、安価で高い画質を右す
る液晶表示素子が可能となる。By using this alignment film, it becomes possible to produce a liquid crystal display element that is inexpensive and has high image quality.
（実施例）
以下に、この発明の実施例を図面にもとずいて説明する
。(Example) Hereinafter, an example of the present invention will be described based on the drawings.
！ｆｆｉ
第１図は、液晶表示素子である。ガラスまたはプラスチ
ックの基板１．１′に、ネサパターン２ミ２′を形成後
、液晶配向膜４．４′を付着する。! ffi FIG. 1 shows a liquid crystal display element. After forming a Nesa pattern 2mi 2' on a glass or plastic substrate 1.1', a liquid crystal alignment film 4.4' is attached.
次に、シール材３．３′を用いて表示パネルに組み、液
晶５を注入して、注入口を封止したものである。Next, a display panel was assembled using sealant 3.3', liquid crystal 5 was injected, and the injection port was sealed.
第１・図の液晶配向１１４．４′を付着形成させるため
に以下のようにした１゜
１５−フェニルペンタデカン酸
Ω−（ＣＨ２） １４ＣＯＯＩ−１
をベンゼンに溶解し、水面上に滴下展開して膜を形成し
た。第２図は、この水面上の膜を製作する方法を示した
ちのである。水（８）面上に展開した１５−フェニルペ
ンタデカン酸を、浮子７と、おちり６で圧縮して膜９を
形成した１、第３図は、この膜を、基板に移し取って配
向ＦＪを形成する方法を示したものである。水（８）中
に、ネサパターンを形成した基板１０を浸漬した後、浮
子７で圧縮した股９を、基板１０を引上げることで、基
板１０に付着形成した。液晶パネルに組み、ＴＮ液晶を
注入した。表示特性の優れた液晶表示素ｆであった。In order to adhere and form the liquid crystal orientation 114.4' shown in Figure 1, 1゜15-phenylpentadecanoic acid Ω-(CH2) 14COOI-1 prepared as follows was dissolved in benzene and spread out dropwise on the water surface. A film was formed. Figure 2 shows how to fabricate this membrane on the water surface. 1, 15-phenylpentadecanoic acid spread on the surface of water (8) is compressed with a float 7 and a dust 6 to form a film 9. 1, Fig. 3 shows that this film is transferred to a substrate and aligned with FJ. This shows how to form a . After immersing the substrate 10 on which the Nesa pattern was formed in water (8), the crotch 9 compressed by the float 7 was attached and formed on the substrate 10 by pulling up the substrate 10. It was assembled into a liquid crystal panel and TN liquid crystal was injected into it. The liquid crystal display element f had excellent display characteristics.
実施例２゜
１６− （９−アントロキシ）ステアリン酸をベンゼン
に溶解し、水面上に滴下展開しＩ膜を形成した。以下、
実施例１．と同様にして、基板上に、液晶配向膜を形成
した。液晶パネルに組み、ＴＮ′ａ品を注入した。表示
特性の優れた液晶表示素子であった。Example 2 16-(9-Anthroxy)stearic acid was dissolved in benzene, and the solution was dropped onto the water surface to form an I film. below,
Example 1. A liquid crystal alignment film was formed on the substrate in the same manner as above. It was assembled into a liquid crystal panel and the TN'a product was injected. It was a liquid crystal display element with excellent display characteristics.
（発明の効果）
この発明は以上説明したように、一般式で示される芳香
族有機化合物を、水面りに展開して膜を形成後、基板上
に、π電子系が表面に現われる形で、−・ｆ！Ｊ以上付
看して、液晶配向膜を形成することにより、従来のラビ
ング法で生じていた配向膜表面の傷や膜厚の不均一、膜
のはがれ、駆動電極の破損と、それによる配向不良や表
示素子の品質低下を防ぐことが６エ能であり、ざらに真
空装置が不要なため、低コストで多産性の高い、均一で
無欠陥かつ良好な配向性を有する配向膜を形成すること
が可能であり、高品質の液晶表示素子製造を可能−にす
る効果がある。(Effects of the Invention) As explained above, the present invention spreads an aromatic organic compound represented by the general formula on the surface of water to form a film, and then deposits the aromatic organic compound represented by the general formula on the surface of the substrate in such a manner that a π-electron system appears on the surface. -・f! By forming a liquid crystal alignment film with the above precautions, it is possible to avoid scratches on the alignment film surface, uneven film thickness, peeling of the film, damage to drive electrodes, and resulting poor alignment that occur with conventional rubbing methods. It has six functions to prevent quality deterioration of display elements and display elements, and since no vacuum equipment is required, it is possible to form alignment films that are uniform, defect-free, and have good alignment properties at low cost and with high productivity. This has the effect of making it possible to manufacture high-quality liquid crystal display elements.
第１図は、液晶表示素子の断面図、第２図は、水面上の
膜製作法、第３図は、配向膜形成法を示した図である。
１．１′・・・基板
２．２′・・・ネサパターン
３．３′・・・シール材
４．４′・・・液晶配向膜
５・・・液晶
６・・・おもり
７・・・浮子
８・・・水
９・・・配向膜
１０・・・基板
（（１０１名）FIG. 1 is a cross-sectional view of a liquid crystal display element, FIG. 2 is a diagram showing a method for manufacturing a film on a water surface, and FIG. 3 is a diagram showing a method for forming an alignment film. 1.1'... Substrate 2.2'... Nesa pattern 3.3'... Sealing material 4.4'... Liquid crystal alignment film 5... Liquid crystal 6... Weight 7... Float 8...Water 9...Alignment film 10...Substrate ((101 people)
Claims (5)
された一対の基板に挟持された液晶層を有する液晶表示
素子において、前記基板間の対向面上の配向膜は、一般
式 Ｘ・Ｙ・Ｚ で示される芳香族有機化合物を水面上に展開して膜を形
成後、基板上に、π電子系が表面に現われる形で、一層
以上付着して得られたものであることを特徴とする液晶
表示素子。(1) In a liquid crystal display element having a liquid crystal layer sandwiched between a pair of substrates on which a transparent electrode is formed and a liquid crystal alignment film formed thereon, the alignment film on the opposing surface between the substrates has the general formula・After forming a film by spreading an aromatic organic compound represented by Y・Z on a water surface, it was obtained by depositing one or more layers on a substrate with a π-electron system appearing on the surface. Characteristic liquid crystal display element.
性基であることを特徴とする特許請求の範囲第１項記載
の液晶表示素子。(2) Aromatic organic compound X, Y, Z, wherein X is a group having a π electron system, Y is a hydrophobic group, and Z is a hydrophilic group. Liquid crystal display element.
基であることを特徴とする特許請求の範囲第１項記載の
液晶表示素子。(3) The liquid crystal according to claim 1, wherein in the aromatic organic compound X, Y, Z, X is a hydrophobic group, Y is a group having a π electron system, and Z is a hydrophilic group. display element.
で、Ｚを含まないことを特徴とする特許請求の範囲第１
項記載の液晶表示素子。(4) Aromatic organic compound X, Y, Z, where X is a hydrophobic group, Y is a group having a highly hydrophilic π-electron system, and does not contain Z.
The liquid crystal display element described in .
基で、Ｚを含まないことを特徴とする特許請求の範囲第
１項記載の液晶表示素子。(5) Aromatic organic compound X, Y, Z, wherein X is a group having a strongly hydrophobic π-electron system, Y is a hydrophilic group, and Z is not included. The liquid crystal display element described above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5983286A JPS62215928A (en) | 1986-03-18 | 1986-03-18 | Liquid crystal display element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5983286A JPS62215928A (en) | 1986-03-18 | 1986-03-18 | Liquid crystal display element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62215928A true JPS62215928A (en) | 1987-09-22 |
Family
ID=13124593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5983286A Pending JPS62215928A (en) | 1986-03-18 | 1986-03-18 | Liquid crystal display element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62215928A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5357357A (en) * | 1989-09-20 | 1994-10-18 | Hitachi, Ltd. | Liquid crystal display devices with organic thin film formed by compressing molecules on liquid surface and transferring to substrate by horizontal lifting |
-
1986
- 1986-03-18 JP JP5983286A patent/JPS62215928A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5357357A (en) * | 1989-09-20 | 1994-10-18 | Hitachi, Ltd. | Liquid crystal display devices with organic thin film formed by compressing molecules on liquid surface and transferring to substrate by horizontal lifting |
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