JPH03192323A - Production of liquid crystal panel - Google Patents
Production of liquid crystal panelInfo
- Publication number
- JPH03192323A JPH03192323A JP33335289A JP33335289A JPH03192323A JP H03192323 A JPH03192323 A JP H03192323A JP 33335289 A JP33335289 A JP 33335289A JP 33335289 A JP33335289 A JP 33335289A JP H03192323 A JPH03192323 A JP H03192323A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- substrates
- substrate
- transparent electrode
- mixture
- 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 47
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 239000000203 mixture Substances 0.000 claims abstract description 45
- 239000000758 substrate Substances 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims description 14
- 229920000642 polymer Polymers 0.000 claims description 11
- 150000001875 compounds Chemical class 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 6
- 230000001678 irradiating effect Effects 0.000 claims description 5
- 238000004132 cross linking Methods 0.000 claims description 3
- 239000011521 glass Substances 0.000 abstract description 16
- 239000000853 adhesive Substances 0.000 abstract description 7
- 230000001070 adhesive effect Effects 0.000 abstract description 7
- 239000011347 resin Substances 0.000 abstract description 4
- 229920005989 resin Polymers 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 abstract description 4
- 239000011324 bead Substances 0.000 abstract description 3
- 230000002093 peripheral effect Effects 0.000 abstract description 3
- 239000000835 fiber Substances 0.000 abstract 1
- 239000010408 film Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000004988 Nematic liquid crystal Substances 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 238000007650 screen-printing Methods 0.000 description 3
- 239000012670 alkaline solution Substances 0.000 description 2
- 238000000149 argon plasma sintering Methods 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 1
- 108091034117 Oligonucleotide Proteins 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000007646 gravure printing Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000007645 offset printing Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】 産業上の利用分野 本発明は液晶パネルの製造方法に関する。[Detailed description of the invention] Industrial applications The present invention relates to a method for manufacturing a liquid crystal panel.
従来の技術
高分子材料と、液晶組成物とを組み合わせてなる偏光板
を必要としない光散乱を利用した液晶パネルは、ファゲ
ーソン（ＦＡＣ；ＡＳＯＮ）らにより提案され、最近で
は調光がラスとし実用化が進められている。″ニスアイ
デイ インターナショナル シンポジウム ＸＶＩ （
Ｓ１０ １ＮＴＥＲＮＡＴＩＯＮＡＬＳＹＭＰＯＳＩＵ
Ｍ Ｘ Ｖ［）”（１９８５） ６８−７０前記液晶パ
ネルは電圧に対する光透過率の変化にしきい値がなく、
また光遮蔽時（即ち暗状態）での遮蔽率が不十分であり
、しかも光透過時（即ち明状態）の光透過率も不十分な
ため、結果として明暗のコントラストが悪いというのが
現状である。これらの欠点を改良する方式として、掘出
らによって液晶組成物と高分子材料との混合物をを機溶
剤に溶解した溶液をつ（す、これからキャストフィルム
を作製すると言う方法が提案されている（第１５回液晶
討論会（１９８９） ２８０４）。また、大日本インキ
のグループによって提案された方法によって優れた電気
光学特性が得られている（第１５回液晶討論会（１９８
９） ２Ｂ１２） 、即ち、光硬化性モノマーとネマチ
ック液晶組成物との混合物を、予め一定のギャップを形
成した二枚の液晶パネル用ガラス基板間に注入し、注入
後ガラス基板を通して光を照射し、光硬化性モノマーを
架橋させるというもので、この方法により比較的低電圧
で駆動出来、かつコントラストの良い液晶パネルが作製
された。Conventional technology A liquid crystal panel that combines a polymer material and a liquid crystal composition and uses light scattering that does not require a polarizing plate was proposed by FAC (ASON) et al. is being developed. ``Nisiday International Symposium XVI (
S10 1NTERNATIONAL SYMPOSIU
M.
In addition, the shielding rate when light is blocked (i.e., dark state) is insufficient, and the light transmittance when light is transmitted (i.e., bright state) is also insufficient, resulting in poor contrast between light and dark. be. As a method to improve these shortcomings, Horidori et al. proposed a method in which a solution of a mixture of a liquid crystal composition and a polymeric material is dissolved in a solvent, and a cast film is prepared from the solution ( 15th Liquid Crystal Symposium (1989) 2804). Excellent electro-optical properties have also been obtained by a method proposed by the Dainippon Ink group (15th Liquid Crystal Symposium (1989) 2804).
9) 2B12) That is, a mixture of a photocurable monomer and a nematic liquid crystal composition is injected between two glass substrates for liquid crystal panels with a certain gap formed in advance, and after injection, light is irradiated through the glass substrates. This method involves crosslinking photocurable monomers, and by this method a liquid crystal panel that can be driven at a relatively low voltage and has good contrast has been produced.
発明が解決しようとする課題
しかし、かかる方法は実際に液晶パネルを生産するに際
しては多くの課題を有している。即ち、液晶を注入後、
ガラス基板を通して光を照射するという方式であるため
、基板が光を吸収するような場合にはこの方式は利用で
きない。例えば、いわゆるＴＰＴ（Ｉ膜トランジスタ）
を電極とするアクティブマトリックス液晶パネルの場合
には、ＴＰＴが光を吸収し光劣化するためこの方法は使
えない。また、基板の一方に光により変色してしまうよ
うな材料が用いられている場合で、例えば、カラー表示
のための色素系カラーフィルターを用いていると、フィ
ルターが光照射で劣化してしまう。Problems to be Solved by the Invention However, this method has many problems when actually producing liquid crystal panels. That is, after injecting the liquid crystal,
Since this method involves irradiating light through a glass substrate, this method cannot be used in cases where the substrate absorbs light. For example, so-called TPT (I film transistor)
In the case of an active matrix liquid crystal panel using TPT as an electrode, this method cannot be used because TPT absorbs light and is photodegraded. Further, if one of the substrates uses a material that changes color when exposed to light, for example, if a dye-based color filter for color display is used, the filter will deteriorate due to light irradiation.
課題を解決するための手段
これらの！１題を解決するため本発明の液晶パネルの製
造法は、少なくとも表面に電極層を形成した少なくとも
一方の基板上に、液晶組成物と液晶性を示さない高分子
化合物とからなる混合物層を形成する工程と、二枚の基
板を、その少なくとも一方の基板の表面に形成された前
記液晶組成物と液晶性を示さない高分子化合物とからな
る混合物層が内側になるように配して合い向かわしめ、
減圧下で張り合わせる工程とを含むことを特徴とするも
のである。These are the means to solve the problem! In order to solve one problem, the method for manufacturing a liquid crystal panel of the present invention includes forming a mixture layer consisting of a liquid crystal composition and a polymer compound that does not exhibit liquid crystallinity on at least one substrate on which an electrode layer is formed on at least the surface. and placing two substrates facing each other such that the mixture layer formed on the surface of at least one of the substrates, which is composed of the liquid crystal composition and a polymer compound that does not exhibit liquid crystallinity, is on the inside. Close,
The method is characterized in that it includes a step of laminating under reduced pressure.
作用
上記の方法を用いることで液晶層中に気泡が混入するこ
とを容易に防止でき、厚み精度の良い大面積パネルの量
産が容易となる。特に光架橋を伴う場合には基板上に液
晶組成物と光重合性組成物とからなる混合物に直接光を
照射して光重合性化合物を架橋することができるため、
下地基板の光透過性に影響される事がない。また、カラ
ーフィルターなど光劣化しやすい材料を用いるに際して
も、光劣化性材料を有さない側の基板にのみ光を照射し
て架橋させる事ができる。Effect: By using the above method, it is possible to easily prevent air bubbles from entering the liquid crystal layer, making it easy to mass-produce large-area panels with good thickness accuracy. In particular, when photocrosslinking is involved, the photopolymerizable compound can be crosslinked by directly irradiating light onto a mixture of a liquid crystal composition and a photopolymerizable composition on the substrate.
It is not affected by the light transmittance of the underlying substrate. Furthermore, even when using a material that is easily photodegradable such as a color filter, crosslinking can be achieved by irradiating light only to the side of the substrate that does not have the photodegradable material.
実施例 以下、本発明を図を用いて具体的に説明する。Example Hereinafter, the present invention will be specifically explained using figures.
実施例１
第２図に示すように、予め表面に２０ｏｎ−の厚さの！
Ｔｏ（インジウムスズ酸化物）ｉ３明電極２２を全面に
形成したガラス基板２１ （５０■×５０−二ガラス厚
ｌｌ１ｌｌ）を弱アルカリ液中で洗浄し、さらに十分水
洗した後、透明電極２２上に液晶組成物と光重合性組成
物とさらに微量の直径１０μｍのガラスピーズからなる
混合物２３（以下、液晶／高分子混合層と称す）と上下
基板の接着のための周辺部２４を残して他の全面に塗布
する。（基板を上から見た状態の第３図参照）このとき
の塗布法としてはスピンコーター、ブレードコーター、
オフセット印刷、スクリーン印刷、グラビア印刷などが
利用できる。ただし、スピンコードの場合、全面塗布後
に周辺部２４を拭き取る必要があるため本実施例ではス
クリーン印刷により第３図のように一辺のみ周囲から１
５園を残し、他の三辺は５閤を残して４０閣×３０−の
面積に厚さ１２μｍの塗膜を形成した。Example 1 As shown in FIG. 2, a 20-on-thick film was applied to the surface in advance.
A glass substrate 21 (50 x 50-2 glass thickness ll 1 ll) on which a To (indium tin oxide) i3 bright electrode 22 was formed on the entire surface was washed in a weak alkaline solution, and after thoroughly washing with water, a glass substrate 21 was formed on the transparent electrode 22. A mixture 23 (hereinafter referred to as a liquid crystal/polymer mixed layer) consisting of a liquid crystal composition, a photopolymerizable composition, and a small amount of glass beads with a diameter of 10 μm, and a peripheral portion 24 for adhering the upper and lower substrates are left aside. Apply to the entire surface. (Refer to Figure 3, which shows the substrate viewed from above.) The coating methods at this time include spin coater, blade coater,
Offset printing, screen printing, gravure printing, etc. can be used. However, in the case of spin cord, it is necessary to wipe off the peripheral area 24 after coating the entire surface, so in this embodiment, screen printing is performed to remove the area from the periphery on only one side as shown in Fig. 3.
A coating film with a thickness of 12 μm was formed on an area of 40 by 30 by leaving 5 gardens and 5 gardens on the other three sides.
用いた液晶組成物は正の誘電異方性をもつ市販のネマチ
ック液晶（メルク■製Ｚ Ｌ ｔ−４２５２）である、
また、光重合性組成物はアクリル系モノマーと光開始剤
とを少なくとも含む組成物で、液晶組成物との相溶性が
ないことが重要である１本例では日本合成ゴム■製デフ
ライトを用い液晶組成物に対し２０重量部混合した。こ
の混合物の塗膜に１に一高圧水銀灯の光を２０Ｃ１１の
距離から３０秒間照射した、これと同一サイズのもう一
枚の基板第４図のようにガラス基板４１上に青色フィル
ター層４２を形成し、さらにその上にＩＴＯ透明電極４
３を形成し、さらにその表面に直径１０μｍのガラス短
繊維を微量混合した光硬化性接着剤からなるシール樹脂
４４を長方形状に幅０．２ｍで形成した。この状態で前
記二枚の基板同志を互いに透明電極部が反対方向に突き
出すように配して減圧下に張り合わせたうえで、青色フ
ィルター及び液晶部分は光遮蔽した状態で照射して接着
剤を光硬化した。こうして作製した液晶パネルの断面図
を第１図に示す、同図において、１１．１３はガラス基
板、１２．１４は透明電極、１５は液晶／高分子混合層
、１６はシール樹脂、１９はフィルター層である０作製
した液晶パネルは初期状態はやや青味かかった不透明な
状態であり、これに１０ボルトの直流電界を印加したと
ころ、液晶／高分子混合層が透明となり青色フィルタ一
部分を光が透過した。この時のコントラスト値は１１で
あった。The liquid crystal composition used was a commercially available nematic liquid crystal with positive dielectric anisotropy (Z L t-4252 manufactured by Merck ■).
In addition, the photopolymerizable composition is a composition containing at least an acrylic monomer and a photoinitiator, and it is important that it has no compatibility with the liquid crystal composition. It was mixed in an amount of 20 parts by weight with respect to the composition. The coating film of this mixture was irradiated with light from a high-pressure mercury lamp for 30 seconds from a distance of 20C11 to form a blue filter layer 42 on another glass substrate 41 of the same size as shown in Figure 4. Furthermore, an ITO transparent electrode 4 is placed on top of that.
3 was formed, and a sealing resin 44 made of a photocurable adhesive mixed with a small amount of short glass fibers having a diameter of 10 μm was formed on the surface thereof in a rectangular shape with a width of 0.2 m. In this state, the two substrates are arranged so that the transparent electrode parts protrude in opposite directions, and are pasted together under reduced pressure.Then, the blue filter and liquid crystal part are irradiated with light shielded, and the adhesive is exposed to light. Hardened. A cross-sectional view of the liquid crystal panel thus produced is shown in Fig. 1. In the figure, 11.13 is a glass substrate, 12.14 is a transparent electrode, 15 is a liquid crystal/polymer mixed layer, 16 is a sealing resin, and 19 is a filter. Initially, the fabricated liquid crystal panel was slightly bluish and opaque, but when a 10 volt DC electric field was applied to it, the liquid crystal/polymer mixed layer became transparent, allowing light to pass through part of the blue filter. It passed through. The contrast value at this time was 11.
実施例２
実施例１と同じように一子め、表面に２００ｎｍの厚さ
のＩＴＯ（インジウムスズ酸化物）透明電極２２を全面
に形成したガラス基板２１ （５０ｍＸ５０ｍｍ ニガ
ラス厚１ｍ）を弱アルカリ液中で洗浄し、さらに十分水
洗した後、透明電極２２上に液晶組成物と光重合性組成
物とさらに微量の直径１０ａｍのガラスピーズからなる
混合物２３（以下、液晶／高分子混合層と称す）を上下
基板の接着のための周辺部２４を残して他の全面に塗布
した０本実施例ではスクリーン印刷により第３図のよう
に一辺のみ周囲から１５＋ｗを残し、他の三辺は５閤を
残して４０■×３０腫の面積に厚さ１２μｍの塗膜を形
成した。用いた液晶組成物は正の誘電異方性をもつ市販
のネマチック液晶（メルク■製Ｚ Ｌ ｌ−１８４４）
である。また、光重合性組成物は本例では東亜合成化学
■アロニックス３０３３を用い液晶組成物に対し１５重
量部混合した。この混合物の塗膜に１に一高圧水銀灯の
光を２０ｃｍの距離から３０秒間照射した。一方、他の
一枚の同一サイズのガラス基板５１上に薄膜トランジス
タアレイと透明電極とからなる表示電極部５２及び引き
出し電極部５３及び直径１０μｍのガラス短繊維を微量
混合した光硬化性接着剤からなるシール樹脂５４を実施
例１と同様に長方形状に輻０．２閣で形成した。この状
態で二枚の基板同志を互いに引き出し電極部が反対方向
に突き出すように配して減圧下に張り合わせたうえで、
表示電極部５２及び液晶部分は光遮蔽した状態で光を照
射して接着剤を光硬化した０作製した液晶パネルは初期
状態は光散乱状態であり、一方薄膜トランジスタを駆動
した状態は透明となり、コントラスト値は１２となった
。Example 2 As in Example 1, a glass substrate 21 (50 m x 50 mm, glass thickness 1 m) on which a 200 nm thick ITO (indium tin oxide) transparent electrode 22 was formed on the entire surface was placed in a weak alkaline solution. After washing thoroughly with water, a mixture 23 (hereinafter referred to as a liquid crystal/polymer mixed layer) consisting of a liquid crystal composition, a photopolymerizable composition, and a small amount of glass beads having a diameter of 10 am is deposited on the transparent electrode 22. In this example, 15+W was left from the periphery on one side as shown in Figure 3 by screen printing, and 5 coats were left on the other three sides. A coating film with a thickness of 12 μm was formed on an area of 40×30 tumors. The liquid crystal composition used was a commercially available nematic liquid crystal with positive dielectric anisotropy (Z L l-1844 manufactured by Merck ■).
It is. In this example, the photopolymerizable composition was Toagosei Chemical's Aronix 3033, which was mixed in an amount of 15 parts by weight with respect to the liquid crystal composition. The coating film of this mixture was irradiated with light from a high-pressure mercury lamp for 30 seconds from a distance of 20 cm. On the other hand, on another glass substrate 51 of the same size, a display electrode section 52 consisting of a thin film transistor array and a transparent electrode, an extraction electrode section 53, and a photocurable adhesive containing a small amount of short glass fibers having a diameter of 10 μm are placed. The sealing resin 54 was formed into a rectangular shape with a diameter of 0.2 mm as in Example 1. In this state, the two substrates are drawn together and arranged so that the electrode parts protrude in opposite directions, and then bonded together under reduced pressure.
The display electrode part 52 and the liquid crystal part are light-shielded and the adhesive is photo-cured by irradiating the adhesive.The manufactured liquid crystal panel is initially in a light-scattering state, but on the other hand, when the thin film transistor is driven, it becomes transparent and contrast is reduced. The value became 12.
発明の効果
以上、記述したように本発明により初めて、アクティブ
マトリックスパネルやカラーパッシブマトリックスパネ
ルについても偏光板を必要としない液晶パネルの製造が
可能となり、しかも非常に容易となり、大面禎表示パネ
ルを安価に製造することが可能となる。As described above, the present invention has made it possible for the first time to manufacture liquid crystal panels that do not require polarizing plates, even for active matrix panels and color passive matrix panels. It becomes possible to manufacture at low cost.
第１図はカラーフィルターを用いた本発明の実施例によ
る液晶パネルの断面図、第２図は本発明の製造工程を示
す断面図、第３図は液晶／高分子混合層の形成状態図、
第４図は製造工程を示す断面図、第５図は他の実施例を
説明する断面図である。 １２．ｒＬＡ−・−」−ル
蹴梅、ｌター・ボあ／高分七酔漫。FIG. 1 is a cross-sectional view of a liquid crystal panel according to an embodiment of the present invention using a color filter, FIG. 2 is a cross-sectional view showing the manufacturing process of the present invention, and FIG. 3 is a diagram of the formation state of a liquid crystal/polymer mixed layer.
FIG. 4 is a sectional view showing the manufacturing process, and FIG. 5 is a sectional view explaining another embodiment. 12. rLA-・-''-Lukebai, ltaboa/Takabunchisuiman.
Claims (3)
方の基板上に、液晶組成物と液晶性を示さない高分子化
合物とからなる混合物層を形成する工程と、二枚の基板
を、その少なくとも一方の基板の表面に形成された前記
液晶組成物と液晶性を示さない高分子化合物とからなる
混合物層が内側になるように配して合い向かわしめて張
り合わせる工程とを含むことを特徴とする液晶パネルの
製造法。(1) A step of forming a mixture layer consisting of a liquid crystal composition and a polymer compound that does not exhibit liquid crystallinity on at least one of the substrates having an electrode layer formed on at least one surface thereof; 2. A liquid crystal display comprising the step of arranging the mixture layer formed on the surface of the substrate and pasting the liquid crystal composition and a polymer compound that does not exhibit liquid crystallinity so that the mixture layer is on the inside and pasting them together. Panel manufacturing method.
化合物とからなる混合物層を形成する工程が、液晶組成
物と光重合性組成物とからなる混合物を塗布する工程と
、前記混合物に光照射して光重合性組成物を架橋せしめ
る工程とを含むことを特徴とする請求項（１）記載の液
晶パネルの製造法。(2) The step of forming a mixture layer consisting of a liquid crystal composition and a polymer compound that does not exhibit liquid crystallinity on the substrate is a step of applying a mixture consisting of a liquid crystal composition and a photopolymerizable composition; 2. The method for producing a liquid crystal panel according to claim 1, further comprising the step of crosslinking the photopolymerizable composition by irradiating the mixture with light.
に形成された前記液晶組成物と液晶性を示さない高分子
化合物とからなる混合物層が内側になるように配して合
い向かわしめて張り合わせる工程が減圧下で行われるこ
とを特徴とする請求項（１）記載の液晶パネルの製造法
。(3) Two substrates are arranged and placed so that the mixture layer formed on the surface of at least one of the substrates, which is composed of the liquid crystal composition and a polymer compound that does not exhibit liquid crystallinity, is on the inside, and are brought together to face each other. 2. The method for manufacturing a liquid crystal panel according to claim 1, wherein the bonding step is performed under reduced pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33335289A JPH03192323A (en) | 1989-12-22 | 1989-12-22 | Production of liquid crystal panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33335289A JPH03192323A (en) | 1989-12-22 | 1989-12-22 | Production of liquid crystal panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03192323A true JPH03192323A (en) | 1991-08-22 |
Family
ID=18265153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33335289A Pending JPH03192323A (en) | 1989-12-22 | 1989-12-22 | Production of liquid crystal panel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03192323A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6228712A (en) * | 1985-07-31 | 1987-02-06 | Matsushita Electric Ind Co Ltd | Liquid crystal constituting body and its production |
| JPS63271233A (en) * | 1986-12-23 | 1988-11-09 | Asahi Glass Co Ltd | Liquid crystal optical element |
| JPH01303414A (en) * | 1988-05-31 | 1989-12-07 | Stanley Electric Co Ltd | Manufacture of liquid crystal cell |
| JPH01307728A (en) * | 1988-06-06 | 1989-12-12 | Ube Ind Ltd | Liquid crystal display device |
-
1989
- 1989-12-22 JP JP33335289A patent/JPH03192323A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6228712A (en) * | 1985-07-31 | 1987-02-06 | Matsushita Electric Ind Co Ltd | Liquid crystal constituting body and its production |
| JPS63271233A (en) * | 1986-12-23 | 1988-11-09 | Asahi Glass Co Ltd | Liquid crystal optical element |
| JPH01303414A (en) * | 1988-05-31 | 1989-12-07 | Stanley Electric Co Ltd | Manufacture of liquid crystal cell |
| JPH01307728A (en) * | 1988-06-06 | 1989-12-12 | Ube Ind Ltd | Liquid crystal display device |
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