JPH02187725A - Manufacture of liquid crystal display element - Google Patents
Manufacture of liquid crystal display elementInfo
- Publication number
- JPH02187725A JPH02187725A JP1285054A JP28505489A JPH02187725A JP H02187725 A JPH02187725 A JP H02187725A JP 1285054 A JP1285054 A JP 1285054A JP 28505489 A JP28505489 A JP 28505489A JP H02187725 A JPH02187725 A JP H02187725A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- oriented films
- heat treatment
- crystal display
- 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 30
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 21
- 239000000758 substrate Substances 0.000 claims abstract description 21
- 238000011282 treatment Methods 0.000 claims abstract description 3
- 238000001704 evaporation Methods 0.000 claims abstract 2
- 238000010030 laminating Methods 0.000 claims abstract 2
- 238000000034 method Methods 0.000 claims description 15
- 239000003960 organic solvent Substances 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 239000002904 solvent Substances 0.000 abstract description 3
- 230000002950 deficient Effects 0.000 abstract description 2
- 230000015556 catabolic process Effects 0.000 abstract 1
- 238000006731 degradation reaction Methods 0.000 abstract 1
- 230000008020 evaporation Effects 0.000 abstract 1
- 239000003566 sealing material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000001459 lithography Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007645 offset printing Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001093 holography Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 238000004544 sputter deposition Methods 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
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Liquid Crystal (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、液晶表示素子の製造方法に関するものであ
って、より詳しくは液晶表示素子の液晶分子を一定方向
に配向させる配向膜が均一な厚さを有するようにするこ
とができる液晶表示素子の製造方法に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for manufacturing a liquid crystal display element, and more specifically, the present invention relates to a method for manufacturing a liquid crystal display element, and more specifically, the invention relates to a method for manufacturing a liquid crystal display element, and more specifically, the invention relates to a method for manufacturing a liquid crystal display element. The present invention relates to a method of manufacturing a liquid crystal display element that can be made to have a certain thickness.
電気光学効果を利用した液晶表示素子の一種類が、第１
図に示しである。この図面に示した液晶表示素子は、透
明なガラスから成る第一基板（１ａ）と第二基板（１ｂ
）とがスペーサーの役割をするシーリング材（４）によ
って所定の間隔で平行に結合されている。この場合、上
記シーリング材（４）は一般にフリットガラスや有機接
着剤が使用されるが、図面にはその高さが誇張し°ζ表
現されている。一方、上記第一基板（１ａ）と第二基板
（１ｂ）によって形成される空間部には、液晶（５）が
充填され、第一基板と第二基板の内側面には上記液晶（
５）を所定の方向に配向させる配向膜（３ａ）、（３ｂ
）と、配向膜（３ａ）と（３ｂ）の間に電界を形成する
電極（２ａ）。One type of liquid crystal display element that utilizes the electro-optic effect is the first
It is shown in the figure. The liquid crystal display element shown in this drawing consists of a first substrate (1a) and a second substrate (1b) made of transparent glass.
) are connected in parallel at predetermined intervals by a sealing material (4) that serves as a spacer. In this case, frit glass or organic adhesive is generally used as the sealing material (4), but its height is exaggerated in the drawing. On the other hand, the space formed by the first substrate (1a) and the second substrate (1b) is filled with liquid crystal (5), and the liquid crystal (5) is filled in the inner surface of the first substrate and the second substrate.
5) alignment films (3a) and (3b
) and an electrode (2a) that forms an electric field between the alignment films (3a) and (3b).
（２ｂ）がそれぞれ形成される。(2b) are formed respectively.
このような構造の液晶表示素子の製造方法は、次の通り
である。A method for manufacturing a liquid crystal display element having such a structure is as follows.
先ず、透明導電膜が塗布された第−及び第二基板（ｌａ
）、 （ｌｂ）の内側面にリソグラフィー（Ｌｉ ｔ
ｈｏｇｒａｐｈｙ）法を利用して所定パターンの透明電
極（２ａ）、（２ｂ）を形成する。そして、第−及び第
二基板（Ｉａ）、（ｌｂ）の電極（２ａ）、（２ｂ）の
上部層にスピンナー（Ｓｐｉｎｎｅｒ）やオフセット印
刷方式を利用して配向膜（３ａ）（３ｂ）を積層形成す
る。次いで、積層された配向膜を１８０〜２５０℃で高
温熱処理して硬化させたあと、液晶分子を一定方向に配
向させるそれぞれの配向膜（３ａ）、 （３ｂ）を所
定の角度でラビイング処理（ｒｕｂｂｉｎｇ）する。そ
して、第−及び第二基板（ｌａ）、（ｌｂ）をシーリン
グ材（４）を用いて所定間隔を有するように結合したあ
と、第−及び第二基板（ｌａ）、（ｌｂ）によって生成
された内部空間に液晶（５）を注入して密封させる。最
終的に上記の第−及び第二基板（ｌａ）。First, the first and second substrates (la
), (lb) lithography (Li t
Transparent electrodes (2a) and (2b) in a predetermined pattern are formed using a holography method. Then, alignment films (3a) and (3b) are laminated on the upper layers of the electrodes (2a) and (2b) of the first and second substrates (Ia) and (lb) using a spinner or offset printing method. Form. Next, the laminated alignment films are cured by high-temperature heat treatment at 180 to 250°C, and then each of the alignment films (3a) and (3b), which orients liquid crystal molecules in a certain direction, is subjected to rubbing treatment (rubbing) at a predetermined angle. )do. After the first and second substrates (la) and (lb) are bonded to each other with a predetermined distance using a sealant (4), the Liquid crystal (5) is injected into the internal space and sealed. Finally the above-mentioned first and second substrates (la).
（ｌｂ）の外イリリ面に偏光板（６ａ）、 （６ｂ）
を取り（Ｊけることにより液晶素子を完成する。Polarizing plate (6a), (6b) on the outer surface of (lb)
Complete the liquid crystal element by removing (J).
ところが、上記の配向膜（３ａ）、 （３ｂ）の製造
工程中１８０〜２５０℃の高温熱処理工程が遂行させる
ようになるが、配向膜の素材に含有された有機溶剤が急
激に揮発されるようになることにより、第２図に示した
ように、配向１１ｆＪ（ａａ）（３ｂ）の厚さが不均一
になり、表面にむらが発生ずるようになる。However, during the manufacturing process of the above-mentioned alignment films (3a) and (3b), a high-temperature heat treatment process at 180 to 250°C is carried out, but the organic solvent contained in the material of the alignment film is rapidly volatilized. As a result, as shown in FIG. 2, the thickness of the orientation 11fJ(aa)(3b) becomes non-uniform, resulting in unevenness on the surface.
このように表面が荒く、厚さが不均一に形成された配向
膜によれば、黒白Ｓ Ｔ Ｎ （Ｓｕｐｅｒ ｔｗｉｓ
ｔｅｄ）モードや、ネガティブ駆動方式のブルーモード
（ｂｌｕｅ ｍｏｄｅ）の液晶表示素子の場合、画面に
直接悪影響を及ぼずようになるが、画質が顕著に低下す
るようになる。According to the alignment film formed with such a rough surface and non-uniform thickness, black and white S T N (Super twist
In the case of a liquid crystal display device in the TED mode or the negative drive type blue mode, the screen is not directly adversely affected, but the image quality is significantly degraded.
この発明は、上記の問題点を改善し得るものであって、
加工状態が良い配向膜を有する液晶表示素子の製造方法
を提供するごとにその目的がある。This invention can improve the above problems,
An object of the present invention is to provide a method for manufacturing a liquid crystal display element having an alignment film that is well-processed.
この発明は、液晶表示素子の製造工程中、所定形状の電
極が形成された基板の内面に配向膜を積層したあと、こ
れを熱処理するが、低温予備熱処理一
理段階と高温本熱処理段階を通じて上記配向膜を硬化さ
せるようにする点に特徴がある。In the manufacturing process of a liquid crystal display element, an alignment film is laminated on the inner surface of a substrate on which electrodes of a predetermined shape are formed, and then it is heat treated. The feature is that the alignment film is hardened.
〔作 用］
上記のように、配向膜を熱処理するとき、低温予備熱処
理が遂行されれば、配向膜の素材に含有されている有機
溶剤が徐々に蒸発する。そして、高温熱処理を行うと、
予備熱処理を通じて有機溶剤が殆ど除去された配向膜が
固く硬化されるようになる。このようにすることにより
、有機溶剤の急激な揮発による配向膜の厚さの不均一・
が排除され、ひいては不良な配向膜による画質の低下が
防止される。[Function] As described above, when the alignment film is heat-treated, if a low-temperature preliminary heat treatment is performed, the organic solvent contained in the material of the alignment film gradually evaporates. Then, when high temperature heat treatment is performed,
Through the preliminary heat treatment, the alignment layer from which most of the organic solvent has been removed becomes hardened. By doing this, it is possible to prevent uneven thickness of the alignment film due to rapid volatilization of the organic solvent.
is eliminated, and furthermore, deterioration in image quality due to a defective alignment film is prevented.
第−及び第二基板（ｌａ）、（Ｉｂ）の内側表面に、ス
パッタリング法で透明な導電性材料を適当な厚さにコー
ティングしたあと、リソグラフィ法を用いて所定のパタ
ーンの電極（２ａ）、（２ｂ）を形成する。そして、電
極の上部層にオフセット印刷方式やスピン・コーティン
グ法を用いて８００〜１２００人程度の厚さを有する配
向膜（３ａ）、（３ｂ）を積層形成する。次いで、上記
第−及び第二基板（ｌａ）、（ｌｂ）を乾式オーブン（
Ｄｒｙ ０ｖｅｎ）内で８０〜１２０℃の温度に約３０
〜６０秒間予備加熱する。そして更に１８０〜２５０℃
の温度範囲で本熱処理を一定時間の間実行する。After coating the inner surfaces of the first and second substrates (la) and (Ib) with a transparent conductive material to an appropriate thickness by sputtering, a predetermined pattern of electrodes (2a) is formed using lithography. (2b) is formed. Then, alignment films (3a) and (3b) having a thickness of approximately 800 to 1,200 layers are laminated on the upper layer of the electrode using an offset printing method or a spin coating method. Next, the first and second substrates (la) and (lb) are placed in a dry oven (
Dry at a temperature of 80 to 120℃ for about 30 minutes.
Preheat for ~60 seconds. And further 180~250℃
The main heat treatment is performed for a certain period of time at a temperature range of .
この熱処理が完了したあとには、通常の後続工程を通し
て液晶表示素子を完成する。After this heat treatment is completed, the liquid crystal display element is completed through normal subsequent steps.
以上のような液晶表示素子の製造方法ｒ４Ｊ、この発明
の特徴的な要素である熱処理方式によれば、配向膜（３
ａ）、（３ｂ）が硬化する過程のうち、低温の予備熱処
理段階を通じて配向膜に含まれていた有機溶剤が漸次蒸
発（揮発）するため、有機溶剤に不均一な揮発による配
向膜の不均一・化が防止されて第３図に示すように平ら
な表面の配向膜（３ａ）、 （３ｂ）が得られる。即
ち、この発明は予備熱処理を通じて配向膜の厚さの不均
一を招く有機溶剤の蒸発を導き、本熱処理を通じて配向
膜の硬化を遂行する。According to the method r4J for manufacturing a liquid crystal display element as described above, and the heat treatment method which is a characteristic element of the present invention, an alignment film (3
During the curing process of a) and (3b), the organic solvent contained in the alignment film gradually evaporates (volatizes) during the low-temperature preliminary heat treatment stage, so the alignment film may be uneven due to uneven volatilization of the organic solvent.・Alignment films (3a) and (3b) with flat surfaces as shown in FIG. 3 can be obtained by preventing the formation of crystals. That is, the present invention uses a preliminary heat treatment to evaporate the organic solvent that causes uneven thickness of the alignment layer, and performs a main heat treatment to harden the alignment layer.
以上説明したように、この発明によれば、良質の配向膜
を有する液晶表示素子を製造することができるようにな
るが、それは配向膜の熱処理段階が低温予備加熱段階と
高温本加熱段階とに二分化され、効果的な有ｊａ溶剤の
蒸発と、配向膜の硬化が可能であるからである。このよ
うにして、良質の画質を示す液晶表示素子を製造するこ
とができるようになる。As explained above, according to the present invention, it is possible to manufacture a liquid crystal display element having a high-quality alignment film, but this is because the alignment film heat treatment step consists of a low-temperature preheating step and a high-temperature main heating step. This is because it is divided into two parts, and it is possible to effectively evaporate the solvent and harden the alignment film. In this way, it becomes possible to manufacture a liquid crystal display element that exhibits good image quality.
第１図は、−ｉ的な液晶表示素子の断面図である。
第２図は、従来の液晶素子の製造方法による基板上面の
配向膜の形成状態を誇張して示した断面図である。
第３図は、この発明の液晶表示素子の製造方法による基
板上面の配向膜の形成状態を誇張して示した断面図であ
る。
図中参照符号：
ｌａ、ｌｂ・・・第一、第二基板、
２ａ、２ｂ・・・透明電極、
３ａ、３ｂ・・・配向膜、
４・・・シーリング材、
５・・・液晶、
６ａ、６ｂ・・・偏光板。FIG. 1 is a sectional view of a -i liquid crystal display element. FIG. 2 is a cross-sectional view exaggerating the formation of an alignment film on the upper surface of a substrate according to a conventional method for manufacturing a liquid crystal device. FIG. 3 is a cross-sectional view exaggerating the formation of an alignment film on the upper surface of a substrate according to the method of manufacturing a liquid crystal display element of the present invention. Reference symbols in the figure: la, lb...first and second substrates, 2a, 2b...transparent electrodes, 3a, 3b...alignment film, 4...sealing material, 5...liquid crystal, 6a , 6b... polarizing plate.
Claims (1)
を積層したあと、これを熱処理し、低温予備熱処理段階
と、高温本熱処理段階とを通じて上記配向膜に含まれて
いる有機溶剤を蒸発させた後、上記配向膜を硬化させる
ようにすることを特徴とする液晶表示素子の製造方法。 ２、上記低温予備熱処理段階が、８０〜１２０℃の温度
範囲で３０〜６０秒間遂行されるようにすることを特徴
とする請求項１記載の液晶表示素子の製造方法。[Scope of Claims] 1. After laminating an alignment film on the inner surface of a substrate on which electrodes of a predetermined shape are formed, this is heat-treated, and through a low-temperature preliminary heat treatment step and a high-temperature main heat treatment step, the alignment film contains A method for manufacturing a liquid crystal display element, comprising curing the alignment film after evaporating the organic solvent contained in the liquid crystal display element. 2. The method of manufacturing a liquid crystal display device as claimed in claim 1, wherein the low temperature preheat treatment step is performed at a temperature of 80 to 120C for 30 to 60 seconds.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR88-14455 | 1988-11-03 | ||
| KR1019880014455A KR920003350B1 (en) | 1988-11-03 | 1988-11-03 | Manufacturing method of lcd |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02187725A true JPH02187725A (en) | 1990-07-23 |
Family
ID=19278991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1285054A Pending JPH02187725A (en) | 1988-11-03 | 1989-11-02 | Manufacture of liquid crystal display element |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH02187725A (en) |
| KR (1) | KR920003350B1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100576113B1 (en) * | 1999-01-22 | 2006-05-03 | 삼성전자주식회사 | Method for fabricating thin film transistor substrate for reflective LCD |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58129416A (en) * | 1982-01-28 | 1983-08-02 | Canon Inc | Manufacture of electrode plate |
| JPS58130325A (en) * | 1982-01-29 | 1983-08-03 | Canon Inc | Manufacture of electrode plate |
-
1988
- 1988-11-03 KR KR1019880014455A patent/KR920003350B1/en not_active IP Right Cessation
-
1989
- 1989-11-02 JP JP1285054A patent/JPH02187725A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58129416A (en) * | 1982-01-28 | 1983-08-02 | Canon Inc | Manufacture of electrode plate |
| JPS58130325A (en) * | 1982-01-29 | 1983-08-03 | Canon Inc | Manufacture of electrode plate |
Also Published As
| Publication number | Publication date |
|---|---|
| KR900008308A (en) | 1990-06-03 |
| KR920003350B1 (en) | 1992-04-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6011609A (en) | Method of manufacturing LCD by dropping liquid crystals on a substrate and then pressing the substrates | |
| JP2957385B2 (en) | Manufacturing method of ferroelectric liquid crystal device | |
| JPS61173221A (en) | Formation of liquid crystal display device | |
| JPH02187725A (en) | Manufacture of liquid crystal display element | |
| JP2001125108A (en) | Method of manufacturing for alignment layer and method of manufacturing for liquid crystal device | |
| JPH0475025A (en) | Lcd panel | |
| JPH06332012A (en) | Production of liquid crystal electrooptical device | |
| JP2641370B2 (en) | Manufacturing method of liquid crystal display device | |
| JPH11119222A (en) | Production of orientation layer for liquid crystal display device and liquid crystal display device | |
| JPH10104562A (en) | Production of liquid crystal display and apparatus for production | |
| KR100466391B1 (en) | Method for manufacturing liquid crystal display device utilizing spin coating | |
| JPH1164853A (en) | Production of ferroelectric liquid crystal device and ferroelectric liquid crystal device | |
| JPS61160720A (en) | Production of liquid crystal element | |
| JPH1195226A (en) | Production of ferroelectric liquid crystal panel | |
| JP2000206547A (en) | Production of liquid crystal display element | |
| JP3383556B2 (en) | Manufacturing method of liquid crystal display device | |
| JPH0764107A (en) | Production of nonlinear element substrate | |
| JP2558920B2 (en) | Method for manufacturing color liquid crystal display | |
| JPH03212612A (en) | Production of liquid crystal display element of perpendicular orientation type | |
| JPH06175132A (en) | Production of oriented film for liquid crystal display element | |
| JPH03116115A (en) | Production of liquid crystal panel | |
| JPH0359621A (en) | Manufacture of liquid crystal display panel | |
| JPH08328015A (en) | Liquid crystal display element and its production | |
| JPH03287230A (en) | Production of liquid crystal panel | |
| JPH04125521A (en) | Production of liquid crystal display device |