JPH02282727A - Production of liquid crystal element - Google Patents
Production of liquid crystal elementInfo
- Publication number
- JPH02282727A JPH02282727A JP10530589A JP10530589A JPH02282727A JP H02282727 A JPH02282727 A JP H02282727A JP 10530589 A JP10530589 A JP 10530589A JP 10530589 A JP10530589 A JP 10530589A JP H02282727 A JPH02282727 A JP H02282727A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- substrates
- spacers
- crystal element
- substrate
- 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 52
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 239000000758 substrate Substances 0.000 claims abstract description 40
- 125000006850 spacer group Chemical group 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 6
- 239000000853 adhesive Substances 0.000 abstract description 6
- 238000002347 injection Methods 0.000 abstract description 4
- 239000007924 injection Substances 0.000 abstract description 4
- 239000004677 Nylon Substances 0.000 abstract description 3
- 239000004642 Polyimide Substances 0.000 abstract description 3
- 238000004140 cleaning Methods 0.000 abstract description 3
- 239000004744 fabric Substances 0.000 abstract description 3
- 229920001778 nylon Polymers 0.000 abstract description 3
- 229920001721 polyimide Polymers 0.000 abstract description 3
- 238000001354 calcination Methods 0.000 abstract 1
- 239000010408 film Substances 0.000 description 12
- 230000001070 adhesive effect Effects 0.000 description 4
- 239000012790 adhesive layer Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920006332 epoxy adhesive Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Landscapes
- Liquid Crystal (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は液晶を用いた液晶素子の製造方法、特に液晶配
向膜の形成方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for manufacturing a liquid crystal element using liquid crystal, and particularly to a method for forming a liquid crystal alignment film.
液晶素子は従来、直示型の表示素子として精力的に研究
開発が行われ、現在では液晶ＴＶ等に広く用いられてい
る。BACKGROUND ART Liquid crystal elements have been actively researched and developed as direct display type display elements, and are currently widely used in liquid crystal TVs and the like.
第３図にカラー液晶ＴＶに用いられる液晶素子の基本構
成の断面図を示す、Ｒ，Ｇ、Ｂのカラーフィルタ２２、
保持膜２３、対向電極２４及び液晶配向膜２５を設けた
ガラス基板２１と、薄膜トランジスタ（ＴＰＴ）を設け
た他方のガラス基板（ＴＰＴ基板）２６を、セル厚調整
用のガラスファイバー等のスペーサと、エポキシ系接着
層等２７を介して貼り合わせ、この基板間の間隙に液晶
２８を充填した構造となっている。FIG. 3 shows a cross-sectional view of the basic configuration of a liquid crystal element used in a color liquid crystal TV, R, G, and B color filters 22,
A glass substrate 21 provided with a holding film 23, a counter electrode 24, and a liquid crystal alignment film 25, and the other glass substrate (TPT substrate) 26 provided with a thin film transistor (TPT), with a spacer such as glass fiber for cell thickness adjustment, The structure is such that the substrates are bonded together via an epoxy adhesive layer 27, and the gap between the substrates is filled with liquid crystal 28.
液晶素子の製造工程のフローチャートを第２図に示す。A flowchart of the manufacturing process of the liquid crystal element is shown in FIG.
基板洗浄後ポリイミド等で液晶配向膜を形成し、液晶分
子を一方向にそろえる目的でナイロン等の布で配向膜表
面をこする（ラビング）。その後２枚の基板間のギャッ
プを保つためのガラスファイバーや５ｉ０２等のスペー
サを一方の基板上に散布し、接着剤を所定のパターンに
形成した他方の基板と貼合せ、接着剤をオーブン内で硬
化させる。その後基板間に液晶を注入する。このように
液晶素子製造は複数の工程からなっており、特に基板間
のギャップを液晶素子内全面に渡って均一にする８には
、スペーサを基板上に均一に散布する必要がある。現在
スペーサ散布方式としては、フロン等の溶媒にスペーサ
を混入、攪拌し、基板上部に設けた噴射口から基板上に
噴きつけ、降下の途中で溶媒を蒸発させる湿式が一般的
である。After cleaning the substrate, a liquid crystal alignment film is formed using polyimide or the like, and the surface of the alignment film is rubbed with a cloth such as nylon in order to align the liquid crystal molecules in one direction (rubbing). After that, spacers such as glass fiber or 5i02 to maintain the gap between the two substrates are sprinkled on one substrate, and adhesive is pasted to the other substrate formed in a predetermined pattern, and the adhesive is placed in an oven. Let it harden. After that, liquid crystal is injected between the substrates. As described above, manufacturing a liquid crystal element involves a plurality of steps, and in particular, in order to make the gap between the substrates uniform over the entire surface of the liquid crystal element, it is necessary to uniformly scatter spacers on the substrates. Currently, the most common spacer dispersion method is a wet method in which the spacers are mixed with a solvent such as Freon, stirred, and sprayed onto the substrate from an injection port provided at the top of the substrate, and the solvent evaporates on the way down.
しかしながら従来の方法では、スペーサを基板上に均一
に散布するには、スペーサ材噴射口と基板との距離、噴
射時間等の厳密な制御が必要であり、均一な散布は非常
に困難であった。また基板上に散布されたスペーサは固
定されていないため、液晶注入時等に移動する等の現象
が生じ、そのためスペーサ密度に由来する表示むら等が
発生していた。However, with conventional methods, in order to uniformly spread the spacers on the substrate, it is necessary to strictly control the distance between the spacer material injection port and the substrate, the spraying time, etc., and it is extremely difficult to uniformly spread the spacers. . Furthermore, since the spacers scattered on the substrate are not fixed, they tend to move when liquid crystal is injected, resulting in uneven display due to the density of the spacers.
本発明の目的は上記の欠点を除去して、かつ液晶素子製
造プロセスを短縮することが可能な液晶素子の製造方法
を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a method for manufacturing a liquid crystal element that can eliminate the above-mentioned drawbacks and shorten the process for manufacturing a liquid crystal element.
本発明は、電極を有する２枚の基板間に液晶を挟持する
構造とする液晶素子の製造方法において、液晶配向膜と
して、前記２枚の基板間のギャップを保持するためのス
ペーサを分散した液晶配向膜材料を塗布することを特徴
とする液晶素子の製造方法である。The present invention provides a method for manufacturing a liquid crystal element having a structure in which a liquid crystal is sandwiched between two substrates having electrodes, in which a liquid crystal element is used as a liquid crystal alignment film in which spacers are dispersed to maintain a gap between the two substrates. This is a method for manufacturing a liquid crystal element, which is characterized by applying an alignment film material.
液晶配向膜としてスペーサ材を分散したポリイミド等を
スピンナー等で塗布、焼成することで、スペーサ材上部
も配向膜でおおわれ固定されるため、液晶注入時のスペ
ーサの移動の問題も発生せず、また液晶素子製造プロセ
スも短縮することができる。By applying polyimide or the like with a spacer material dispersed therein as a liquid crystal alignment film using a spinner, etc., and baking it, the upper part of the spacer material is also covered and fixed with the alignment film, so there is no problem of spacer movement when liquid crystal is injected, and The liquid crystal element manufacturing process can also be shortened.
以下、本発明の実施例を詳細に説明する。第１図は本発
明の実施例の液晶素子製造工程のフローチャートである
。基板洗浄後、５μｍの径を有する球状スペーサ（Ｓｉ
０２触媒化成工業■製）を２ ｗ ｔ％混入した液晶配
向膜（オプトマーＡＬ１０５１、日本合成ゴム■製）を
超音波で十分分散し、スピンナーで基板上に塗布、焼成
した。その後、ナイロンの布で基板をラビングし、一方
の基板上に接着剤を印刷して２枚の基板を貼合せオーブ
ン内で接着剤を焼成・硬化した後、液晶を注入した。Examples of the present invention will be described in detail below. FIG. 1 is a flowchart of a liquid crystal element manufacturing process according to an embodiment of the present invention. After cleaning the substrate, a spherical spacer (Si
A liquid crystal alignment film (Optomer AL1051, manufactured by Japan Synthetic Rubber ■) containing 2 wt% of 02 Catalysts & Chemicals Co., Ltd.) was sufficiently dispersed by ultrasonic waves, coated on a substrate with a spinner, and fired. Thereafter, the substrates were rubbed with a nylon cloth, adhesive was printed on one substrate, the two substrates were bonded together, the adhesive was baked and hardened in an oven, and then liquid crystal was injected.
このようにして数多くの液晶素子を製造したが、基板上
にスペーサは均一に散布されており、かつ液晶注入後も
スペーサの移動の問題は発生せず、基板間のギャップが
全面に渡って均一で表示むらのない液晶素子が得られる
ことが確認された。A large number of liquid crystal devices were manufactured in this way, and the spacers were evenly distributed on the substrate, and there was no problem of spacer movement even after the liquid crystal was injected, and the gap between the substrates was uniform over the entire surface. It was confirmed that a liquid crystal element with no display unevenness could be obtained.
以上説明したように、本発明によれば基板上にスペーサ
を均一に散布でき、液晶注入時のスペーサの移動がない
ため、表示むらのない液晶素子が得られる。また液晶素
子製造プロセスが短縮される。As described above, according to the present invention, spacers can be uniformly distributed on a substrate, and since there is no movement of the spacers when liquid crystal is injected, a liquid crystal element without display unevenness can be obtained. Furthermore, the liquid crystal element manufacturing process is shortened.
のフローチャート、第２図は一般的な液晶素子製造工程
のフローチャート、第３図は一般的な液晶素子構造の断
面図である。2 is a flowchart of a general liquid crystal element manufacturing process, and FIG. 3 is a sectional view of a general liquid crystal element structure.
２１・・・基板、２２・・・カラーフィルタ、２３・・
・保護膜、２４・・・対向電極、２５・・・液晶配向膜
、２６・・・ＴＰＴ基板、２７・・・接着層、２８・・
・液晶。21...Substrate, 22...Color filter, 23...
- Protective film, 24... Counter electrode, 25... Liquid crystal alignment film, 26... TPT substrate, 27... Adhesive layer, 28...
·liquid crystal.
Claims (1)
持する構造とする液晶素子の製造方法において、前記２
枚の基板間のギャップを保持するためのスペーサを分散
した液晶配向膜材料を前記基板に塗布する工程を備えた
ことを特徴とする液晶素子の製造方法。In the method for manufacturing a liquid crystal element having a structure in which liquid crystal is injected between two substrates having electrodes and sandwiched between the substrates, the method described in 2.
1. A method for manufacturing a liquid crystal element, comprising the step of applying a liquid crystal alignment film material containing dispersed spacers for maintaining a gap between two substrates to the substrates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10530589A JPH02282727A (en) | 1989-04-24 | 1989-04-24 | Production of liquid crystal element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10530589A JPH02282727A (en) | 1989-04-24 | 1989-04-24 | Production of liquid crystal element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02282727A true JPH02282727A (en) | 1990-11-20 |
Family
ID=14403992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10530589A Pending JPH02282727A (en) | 1989-04-24 | 1989-04-24 | Production of liquid crystal element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02282727A (en) |
-
1989
- 1989-04-24 JP JP10530589A patent/JPH02282727A/en active Pending
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