JPH04172320A - Liquid crystal orientation film manufacturing method - Google Patents
Liquid crystal orientation film manufacturing methodInfo
- Publication number
- JPH04172320A JPH04172320A JP2299501A JP29950190A JPH04172320A JP H04172320 A JPH04172320 A JP H04172320A JP 2299501 A JP2299501 A JP 2299501A JP 29950190 A JP29950190 A JP 29950190A JP H04172320 A JPH04172320 A JP H04172320A
- Authority
- JP
- Japan
- Prior art keywords
- substrate
- liquid crystal
- mold
- thermoplastic resin
- alignment film
- 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 description 23
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 239000000758 substrate Substances 0.000 claims abstract description 26
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 14
- 239000011521 glass Substances 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 3
- 239000002985 plastic film Substances 0.000 claims abstract description 3
- 229920006255 plastic film Polymers 0.000 claims abstract description 3
- 239000010408 film Substances 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 19
- 238000003825 pressing Methods 0.000 claims description 5
- 239000013013 elastic material Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000010409 thin film Substances 0.000 claims description 3
- 239000000428 dust Substances 0.000 abstract description 7
- 230000009477 glass transition Effects 0.000 abstract description 2
- 239000004417 polycarbonate Substances 0.000 abstract description 2
- 229920000515 polycarbonate Polymers 0.000 abstract description 2
- 230000001788 irregular Effects 0.000 abstract 1
- 229920005989 resin Polymers 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- 238000007796 conventional method Methods 0.000 description 3
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000012815 thermoplastic material 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〕
この発明はフラットパネルデイスプレィや、光変調素子
として用いられる液晶を用いた電気光学素子に用いられ
る、液晶配向膜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 alignment film used in flat panel displays and electro-optic elements using liquid crystals used as light modulation elements.
この発明は液晶を用いた電気光学装置の液晶配向膜の製
造方法において、液晶材料をゴミで汚染したりすること
なく、基板面に凹凸があっても容易に配向できる液晶配
向膜の製造方法を提供するものである。The present invention provides a method for manufacturing a liquid crystal alignment film for an electro-optical device using liquid crystal, which can easily align even if the substrate surface has irregularities without contaminating the liquid crystal material with dust. This is what we provide.
第２図を用いて従来の液晶を用いた電気光学素子の配向
膜の製造方法を示す、従来の液晶配向膜の製造方法は、
■ガラスなどの基板１の上にポリイミド、テフロンなど
の樹脂２を塗布する工程、■布を巻き付けたローラ３を
回転させながら該樹脂２の上をこする工程からなる。The conventional method for manufacturing an alignment film for an electro-optical element using liquid crystal is shown in FIG. 2.
This process consists of: (1) applying a resin 2 such as polyimide or Teflon onto a substrate 1 such as glass; and (2) rubbing the resin 2 while rotating a roller 3 wrapped with cloth.
この結果配向膜の上には微細な溝が無数に形成され、こ
れにより液晶が配向する。ＴＮ型の液晶表示パネルは、
第３図に示すごとく、電極８．９の上の配向膜４．５を
互いに直交する方向に配向した２枚のガラス基板６．７
の間に液晶１０を挟持して作られる。As a result, countless fine grooves are formed on the alignment film, thereby aligning the liquid crystal. The TN type liquid crystal display panel is
As shown in FIG. 3, two glass substrates 6.7 with alignment films 4.5 on electrodes 8.9 oriented in mutually orthogonal directions are used.
It is made by sandwiching the liquid crystal 10 between them.
この従来の配向膜の製造方法は大面積にわたって、簡便
な方法で配向膜が形成できるので生産性に優れている。This conventional method for producing an alignment film has excellent productivity because the alignment film can be formed over a large area using a simple method.
一方、この方法によると、樹脂がけずられてゴミが発生
し液晶を汚染するなど不良の原因になるほか、樹脂を塗
布した面に凹凸があると陰になる部分ができて配向でき
ない領域ができる。また、ローラの接触が完全に均一で
ないと場所により配向状態は不均一になり、電気光学特
性にむらができる、などの欠点がある。On the other hand, with this method, the resin is scraped and dust is generated, which contaminates the liquid crystal and causes defects.In addition, if the surface to which the resin is applied is uneven, there will be shadowed areas and areas where alignment cannot be achieved. . Further, if the contact of the rollers is not completely uniform, the orientation state will be uneven depending on the location, resulting in disadvantages such as uneven electro-optical characteristics.
そこで、この発明は、従来のこのような欠点を解決する
ためになされたもので、ゴミを発生せず、基板面に凹凸
があっても良好な配向膜が形成できる液晶配向膜の製造
方法を提供することである。Therefore, this invention was made in order to solve these conventional drawbacks, and to provide a method for manufacturing a liquid crystal alignment film that does not generate dust and can form a good alignment film even if the substrate surface is uneven. It is to provide.
上記問題点を解決するために、この発明はガラスなどの
基板の上にプラスチック膜からなる熱可塑性樹脂を塗布
、該熱可塑性樹脂を加熱しながら方向性のある微細な凹
凸を有する型を押し付けることで配向膜を形成する。In order to solve the above problems, this invention applies a thermoplastic resin made of a plastic film onto a substrate such as glass, and presses a mold having fine directional unevenness while heating the thermoplastic resin. to form an alignment film.
Ｃ作用〕
型を押し付は凹凸を形成し、配向膜とすることで再現性
、均一性があり、基板に凹凸があっても実施でき、ゴミ
を発生しない安定した性能の配向膜が実現できる。C effect] Pressing the mold forms unevenness, and by using it as an alignment film, it is reproducible and uniform, can be performed even if the substrate has unevenness, and an alignment film with stable performance that does not generate dust can be realized. .
第１図Ａ〜［Ｆ］に、本発明の液晶配向膜の製造方法を
示す。本発明の液晶配向膜の製造方法は囚 ガラスなど
の基板１２の上にポリカーボネイトなどの熱可塑性樹脂
１４をコーティングする。樹脂の厚さとしては液晶に加
える電圧の損失を防ぐために１マイクロメータ以下が望
ましい。FIGS. 1A to 1F show a method for manufacturing a liquid crystal alignment film of the present invention. In the method for manufacturing a liquid crystal alignment film of the present invention, a thermoplastic resin 14 such as polycarbonate is coated on a substrate 12 such as glass. The thickness of the resin is desirably 1 micrometer or less in order to prevent loss of voltage applied to the liquid crystal.
（３該熱可塑性樹脂１４をヒータ１１でガラス転移温度
以上に加熱する。(3) Heat the thermoplastic resin 14 to a temperature higher than the glass transition temperature using the heater 11.
（０，０該基板１２に、方向性のある微細な凹凸１３を
有する型１５を押し付ける。ここ″？：該凹凸１３の高
さは、既に塗布しである熱可塑性樹脂１４の厚さに合わ
せて設定する。樹脂膜厚が１マイクロメータであれば凹
凸も１マイクロメ一タ前後が適当である。(0,0 A mold 15 having directional fine unevenness 13 is pressed onto the substrate 12.Here?: The height of the unevenness 13 is adjusted to the thickness of the thermoplastic resin 14 that has already been applied. If the resin film thickness is 1 micrometer, it is appropriate that the unevenness is around 1 micrometer.
押し付ける型１３．１５の材質は基板に凹凸が有り得る
等を考慮するとゴムなどの弾性体が適当である。The material of the pressing molds 13 and 15 is preferably an elastic material such as rubber, considering that the substrate may have unevenness.
型の全体形状は平面でも良いが、第４図に示すごとく円
筒型でも良い。円筒型の型１６の場合円筒の軸を中心に
して回転しながら型を押し付ける。凹凸は型の面内では
規則的に配列しており、そのピッチは１マイクロメータ
以下が望ましい。The overall shape of the mold may be flat, but it may also be cylindrical as shown in FIG. In the case of a cylindrical mold 16, the mold is pressed while rotating around the axis of the cylinder. The unevenness is arranged regularly within the surface of the mold, and the pitch thereof is preferably 1 micrometer or less.
［Ｆ］ 押し付けた型１３．１５を基板から引き離す。[F] Separate the pressed mold 13.15 from the substrate.
０ 熱可塑性樹脂１４を室温で冷却する。0 Cool the thermoplastic resin 14 at room temperature.
の工程から少なくともなる。It consists of at least the following steps.
熱可塑性樹脂は型の押し付けで形成された、規則的で微
細な凹凸を有することになり、このような表面は液晶分
子を一定の方向に一様に配向することが知られている。Thermoplastic resin has regular, fine irregularities formed by pressing with a mold, and it is known that such a surface uniformly aligns liquid crystal molecules in a certain direction.
型が弾性体でできていれば、第５図に示すごとく、基板
面に薄膜トランジスタ１７などのスイッチング素子が形
成されていることによる凹凸があっても型の転写は可能
である。型を用いての凹凸による配向膜の形成方法なの
で繰り返し同し配向膜が再現性良くでき、擦る工程がな
いのでゴミの発生は無い。If the mold is made of an elastic material, as shown in FIG. 5, the mold can be transferred even if the substrate surface has irregularities due to the formation of switching elements such as thin film transistors 17. Since the method uses a mold to form an alignment film with unevenness, the same alignment film can be repeatedly formed with good reproducibility, and since there is no rubbing process, no dust is generated.
（発明の効果）
以上述べてきたように、本発明によると、液晶配向膜を
ゴミの発生なく、安定した方法で、基板表面に凹凸があ
っても液晶配向膜の形成が可能になる。(Effects of the Invention) As described above, according to the present invention, it is possible to form a liquid crystal alignment film in a stable manner without generating dust even if the substrate surface has irregularities.
【図面の簡単な説明】
第１図囚〜０は本発明による配向膜の製造方法を示す工
程断面図、第２図は従来の配向膜の製造方法を示す斜視
図、第３図はＴＮ液晶セルの構造を示す断面図、第４図
、第５図は本発明の他の実施例を示す断面図である。
１１・・・型
１２・・・基板
１３・・・方向性のある凹凸
１４・・・熱可望性材料
以上
出願人 セイコー電子工業株式会社
代理人 弁理士 林 敬 之 助
１４表ｔ％’ｉ）−塑ｌ＃’１．１！１月１本発明の５
楚晶紅簡り艷の岐遵ｊｐム
鮎１図
３０−ラー
′４是来２のし良品ら乙１ｉ−１７１賽のへｈ艶が夫第
２図
ＴＮ型液晶七ルのオ創直図
獲４図[Brief Description of the Drawings] Figures 1-0 are process cross-sectional views showing the method for manufacturing an alignment film according to the present invention, Figure 2 is a perspective view showing a conventional method for manufacturing an alignment film, and Figure 3 is a TN liquid crystal display. 4 and 5 are cross-sectional views showing other embodiments of the present invention. 11... Mold 12... Substrate 13... Directional unevenness 14... Thermoplastic material or more Applicant: Seiko Electronic Industries Co., Ltd. Agent Patent attorney: Keinosuke Hayashi 14 Table t%'i )-Pl#'1.1!January 15 of the present invention
1i-171 1i-171 1i-171 1i-171 1i-171 1i-171 1i-171 1i-171 1i-171 1i-171 1i-171 1i-171 1i-171 1i-171 2. Capture 4
Claims (5)
熱可塑性樹脂を塗布する工程、該熱可塑性樹脂を加熱し
ながら方向性のある微細な凹凸を有する型を押し付ける
工程、該型を基板から引き離す工程から少なくとも成る
、液晶配向膜の製造方法。(1) A process of applying a thermoplastic resin made of a plastic film onto a substrate such as glass, a process of pressing a mold having fine directional unevenness while heating the thermoplastic resin, and a process of separating the mold from the substrate. A method for manufacturing a liquid crystal alignment film, comprising at least the steps of:
２マイクロメータ以下であることを特徴とする請求項１
記載の液晶配向膜の製造方法。(2) Claim 1 characterized in that the fine irregularities are regularly formed and have a pitch of 2 micrometers or less.
The method for manufacturing the liquid crystal alignment film described above.
スイッチング素子が形成されていることを特徴とする請
求項１ないし２記載の液晶配向膜の製造方法。(3) The method for manufacturing a liquid crystal alignment film according to claim 1 or 2, wherein a switching element such as a thin film transistor or a thin film diode is formed on the substrate.
によって容易に変形することを特徴とする請求項１ない
し２記載の液晶配向膜の製造方法。3. The method of manufacturing a liquid crystal alignment film according to claim 1, wherein the support material of type (4) is made of an elastic material and is easily deformed by pressure.
けは円筒の軸を中心とした回転によってなされることを
特徴とした請求の項１ないし４記載の液晶配向膜の製造
方法。(5) The method for manufacturing a liquid crystal aligning film according to any one of claims 1 to 4, wherein the mold is formed on the surface of a cylindrical surface, and the pressing of the mold is performed by rotation about the axis of the cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2299501A JPH04172320A (en) | 1990-11-05 | 1990-11-05 | Liquid crystal orientation film manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2299501A JPH04172320A (en) | 1990-11-05 | 1990-11-05 | Liquid crystal orientation film manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04172320A true JPH04172320A (en) | 1992-06-19 |
Family
ID=17873399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2299501A Pending JPH04172320A (en) | 1990-11-05 | 1990-11-05 | Liquid crystal orientation film manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04172320A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0643457A (en) * | 1992-05-27 | 1994-02-18 | G T C:Kk | Formation of liquid crystal orienting film |
| WO2001077747A3 (en) * | 2000-04-05 | 2003-01-23 | Digital Reflection Inc | Reflective microdisplay for light engine based video projection applications |
| US6808766B1 (en) | 1998-08-26 | 2004-10-26 | Nissan Chemical Industries, Ltd. | Liquid crystal alignment agent and liquid crystal device using the liquid crystal alignment and method for alignment of liquid crystal molecules |
| KR100778839B1 (en) * | 2000-02-24 | 2007-11-22 | 엘지.필립스 엘시디 주식회사 | Plate Forming an Alignment Film of Liquid Crystal Display and Method of Aligning Liquid Crystal Layer Using The Same |
| CN102634348A (en) * | 2012-03-21 | 2012-08-15 | 广东东邦科技有限公司 | Mixed liquid crystal solution, liquid crystal visual angle enlarging film, preparation method of liquid crystal visual angle enlarging film and liquid crystal display device |
-
1990
- 1990-11-05 JP JP2299501A patent/JPH04172320A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0643457A (en) * | 1992-05-27 | 1994-02-18 | G T C:Kk | Formation of liquid crystal orienting film |
| US6808766B1 (en) | 1998-08-26 | 2004-10-26 | Nissan Chemical Industries, Ltd. | Liquid crystal alignment agent and liquid crystal device using the liquid crystal alignment and method for alignment of liquid crystal molecules |
| KR100778839B1 (en) * | 2000-02-24 | 2007-11-22 | 엘지.필립스 엘시디 주식회사 | Plate Forming an Alignment Film of Liquid Crystal Display and Method of Aligning Liquid Crystal Layer Using The Same |
| WO2001077747A3 (en) * | 2000-04-05 | 2003-01-23 | Digital Reflection Inc | Reflective microdisplay for light engine based video projection applications |
| CN102634348A (en) * | 2012-03-21 | 2012-08-15 | 广东东邦科技有限公司 | Mixed liquid crystal solution, liquid crystal visual angle enlarging film, preparation method of liquid crystal visual angle enlarging film and liquid crystal display device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3217884B2 (en) | Liquid crystal display device and device | |
| JP2004226974A (en) | Non-rubbing liquid crystal orientation method | |
| JPH11133438A (en) | Liquid crystal display element and its production | |
| JPH04172320A (en) | Liquid crystal orientation film manufacturing method | |
| US5946064A (en) | Alignment layer, method for forming alignment layer and LCD having the same | |
| JP2003287758A (en) | Liquid crystal display device with spacer integrally formed at plastic substrate | |
| JP2780942B2 (en) | Liquid crystal display device and method of manufacturing the same | |
| JPS63200126A (en) | Liquid crystal display element | |
| JPH0194318A (en) | Liquid crystal display element | |
| JPH02311824A (en) | Orientation control film and liquid crystal element | |
| JP3041399B2 (en) | Manufacturing method of electro-optical device | |
| JPH04372931A (en) | Manufacture of liquid crystal display element | |
| JPH0255327A (en) | Rubbing device | |
| JPH05210101A (en) | Production of ferroelectric liquid crystal element | |
| JPH04243230A (en) | Liquid crystal display element and production thereof | |
| JPH03150530A (en) | Formation of oriented film of liquid crystal display device | |
| KR102326132B1 (en) | Liquid crystal alignment method by imprint process of wrinkled structures using UV | |
| JPH03288131A (en) | Formation of oriented film and production of liquid crystal display element | |
| JPH08184835A (en) | Production of liquid crystal display element | |
| KR101112558B1 (en) | Liquid crystal display | |
| JPH0545653A (en) | Production of liquid crystal display element | |
| JP3197982B2 (en) | Method of manufacturing spacer for liquid crystal display element | |
| JPH0239025A (en) | Manufacture of liquid crystal display | |
| JPH06175131A (en) | Production of oriented film for liquid crystal display element | |
| JPH01138533A (en) | Ferroelectric liquid crystal display element |