JPH07119911B2 - Liquid crystal display - Google Patents
Liquid crystal displayInfo
- Publication number
- JPH07119911B2 JPH07119911B2 JP61045869A JP4586986A JPH07119911B2 JP H07119911 B2 JPH07119911 B2 JP H07119911B2 JP 61045869 A JP61045869 A JP 61045869A JP 4586986 A JP4586986 A JP 4586986A JP H07119911 B2 JPH07119911 B2 JP H07119911B2
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- display portion
- crystal display
- seal
- 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.)
- Expired - Lifetime
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims description 21
- 239000000758 substrate Substances 0.000 claims description 23
- 239000003566 sealing material Substances 0.000 claims description 11
- 239000005262 ferroelectric liquid crystals (FLCs) Substances 0.000 claims description 8
- 239000000565 sealant Substances 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 description 14
- 238000002347 injection Methods 0.000 description 11
- 239000007924 injection Substances 0.000 description 11
- 238000001816 cooling Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000007645 offset printing Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Landscapes
- Liquid Crystal (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は強誘電性液晶を用いた液晶表示装置の構造、特
に配向膜に関する。The present invention relates to a structure of a liquid crystal display device using a ferroelectric liquid crystal, particularly to an alignment film.
従来の液晶表示装置は、強誘電性液晶分子を基板と平行
かつ同一方向に揃えて配向させる為の膜基板のシール材
に囲まれた部分全体に形成してあつた。In the conventional liquid crystal display device, the ferroelectric liquid crystal molecules are formed on the entire portion surrounded by the sealing material of the film substrate for aligning the liquid crystal molecules in parallel and in the same direction as the substrate.
しかし前述の従来技術では、注入口及び、シール材の曲
り部分やシール材の壁面の大きな凹凸よりデイスクリネ
ーシヨンが発生し、均一な初期配向が得られないばかり
か、最悪な場合には、均一に駆動しないという問題点を
有する。そこで本発明は、このような問題点を解決する
もので、その目的とするところは、注入口、及びシール
が配向に及ぼす影響を無くしデイスクリネーシヨンのな
い均一な初期配向、さらには均一な駆動を提供するとこ
ろにある。However, in the above-described conventional technique, since not only a uniform initial orientation cannot be obtained due to the generation of the injection due to the curved portion of the sealing material and the large unevenness of the wall surface of the sealing material, but in the worst case, the uniform orientation is not obtained. It has a problem that it is not driven. Therefore, the present invention solves such a problem, and an object thereof is to eliminate the influence of the injection port and the seal on the orientation, to obtain a uniform initial orientation without a screen, and a uniform driving. Is in the place of providing.
［問題点を解決するための手段］ 本発明の液晶表示装置は、対向する基板内面に電極を有
する一対の基板をシール材によって固定してなり、前記
一対の基板間に強誘電性液晶を挟持してなる液晶表示装
置において、前記電極によって形成される表示部分に
は、前記液晶を前記基板と平行に配向させるための水平
配向膜が形成されてなり、前記表示部分と前記シール材
との間の非表示部分には、前記液晶を垂直に配向させる
ための垂直配向膜が形成されてなることを特徴とする。[Means for Solving the Problems] In the liquid crystal display device of the present invention, a pair of substrates having electrodes on the inner surfaces of the opposing substrates are fixed by a sealing material, and a ferroelectric liquid crystal is sandwiched between the pair of substrates. In the liquid crystal display device according to, a horizontal alignment film for aligning the liquid crystal in parallel with the substrate is formed in a display portion formed by the electrodes, and a horizontal alignment film is formed between the display portion and the sealing material. In the non-display part, a vertical alignment film for vertically aligning the liquid crystal is formed.
一般にデイスクリネーシヨンは、注入口部分、シール材
の曲り部分及びシール材の壁面の大きな凸凹より層と平
行な方向に成長するが、本発明の上記の構成により、シ
ール材と表示部分の間に、液晶分子を基板と平行に配向
させる性質のない部分もしくは、少なくともその一部に
基板と垂直に配向させる性質を持つ部分を形成すると、
その部分において強誘電性液晶の層が基板と垂直に同一
方向に揃つて形成されなくなり、デイスクリネーシヨン
が発生しなくなる。Generally, the screen growth grows in a direction parallel to the layer due to the large unevenness of the injection port portion, the bent portion of the sealing material, and the wall surface of the sealing material, but the above configuration of the present invention causes a gap between the sealing material and the display portion. , If a part that does not have the property of orienting liquid crystal molecules in parallel with the substrate or at least a part of that part with the property of orienting vertically to the substrate is formed,
At that portion, the layer of the ferroelectric liquid crystal is not formed so as to be aligned in the same direction perpendicularly to the substrate, and the generation of the disclination does not occur.
〔実施例１〕 第１図は本発明の実施例における注入口側のシール部分
と表示部分の間に水平配向膜を有しない液晶表示装置の
平面図であり、第２図は、第１図のＡ−Ａ′での断面図
である。[Embodiment 1] FIG. 1 is a plan view of a liquid crystal display device having no horizontal alignment film between a seal portion on the injection port side and a display portion in an embodiment of the present invention, and FIG. 3 is a cross-sectional view taken along line AA ′ of FIG.
通常の方法でガラス基板上に電極を形成し、その後、基
板の４辺のうち注入口が形成される辺の表示部分の外側
部分を除いてオフセット印刷を用いて水平配向剤塗布し
た。その後は、通常の方法でラビングを行い、片方の基
板にシール剤を印刷し組立てた。組立て後のセルに強誘
電性液晶を注入し徐冷を行つた後、配向の様子を観察し
たところ注入口及び注入口側のシール壁面の大きな凹凸
が有る部分からのデイスクリネーシヨンの発生は全く認
められず、他の３辺から幾本かのデイスクリネーシヨン
の発生があつたもののそれも比較的小さいものばかりで
全体的に見るとかなり均一な配向が得られていた。An electrode was formed on a glass substrate by a usual method, and then a horizontal alignment agent was applied by offset printing except for the outer side of the display portion on the side where the injection port was formed among the four sides of the substrate. After that, rubbing was performed by a usual method, and a sealant was printed on one of the substrates to assemble. After injecting the ferroelectric liquid crystal into the assembled cell and slowly cooling it, the state of the alignment was observed, and it was found that no discretion occurred from the injection port and the part with large irregularities on the seal wall surface on the injection port side. Although not recognized, although some screen generations were generated from the other three sides, only relatively small ones were obtained and a fairly uniform orientation was obtained as a whole.
〔実施例２〕 第３図は本発明の実施例における表示部分のみに水平配
向剤を塗布した液晶表示装置の平面図であり、第４図は
第３図のＢ−Ｂ′での断面図である。水平配向剤は、基
板の表示部分のみに塗布され、表示部分とシールの間
は、基板表面がむき出しになつている。この構造を持つ
セルに実施例１と同様に強誘電性液晶を注入し、徐冷後
配向の様子を観察したところ、注入口部分、シールの曲
り部分、シールの壁面に大きな凸凹が有る部分からのデ
イスクリネーシヨンは全く認められず、全体的に均一な
配向を得ることができ、又、駆動させると全面均一に駆
動することが認められた。[Embodiment 2] FIG. 3 is a plan view of a liquid crystal display device in which a horizontal alignment agent is applied only to the display portion in the embodiment of the present invention, and FIG. 4 is a sectional view taken along line BB ′ of FIG. Is. The horizontal alignment agent is applied only to the display portion of the substrate, and the surface of the substrate is exposed between the display portion and the seal. Ferroelectric liquid crystal was injected into a cell having this structure in the same manner as in Example 1, and the state of orientation after gradual cooling was observed. From the injection port part, the bent part of the seal, and the part with large irregularities on the wall surface of the seal, No disclination was observed at all, and it was confirmed that a uniform orientation could be obtained on the whole, and that when it was driven, the whole surface was driven uniformly.
〔実施例３〕 第５図は本発明の実施例における表示部分とシールの間
に垂直配向剤を塗布した液晶表示装置の平面であり、第
６図は、第５図のＣ−Ｃ′での断面図である。水平配向
剤は、基板の表示部分のみに塗布され、表示部分の外側
には垂直配向剤が塗布されている。この構造を持つセル
に実施例１と同様に強誘電性液晶を注入し、徐冷後配向
の様子を観察したところ、注入口部分、シールの曲り部
分、シールの壁面に大きな凸凹が有る部分からのデイス
クリネーシヨンの発生は全く認められず、均一な配向が
得られ、又、駆動させると全面均一に駆動することが認
められた。[Embodiment 3] FIG. 5 is a plan view of a liquid crystal display device in which a vertical alignment agent is applied between a display portion and a seal in an embodiment of the present invention, and FIG. 6 is CC 'in FIG. FIG. The horizontal aligning agent is applied only to the display portion of the substrate, and the vertical aligning agent is applied to the outside of the display portion. Ferroelectric liquid crystal was injected into a cell having this structure in the same manner as in Example 1, and the state of orientation after gradual cooling was observed. From the injection port part, the bent part of the seal, and the part with large irregularities on the wall surface of the seal, No generation of the disclination was observed at all, uniform alignment was obtained, and it was confirmed that the entire surface was driven uniformly when driven.
〔実施例４〕 実施例１〜３では、一対の基板の両面の表示部分に水平
配向剤が塗布されているが、本発明は、片側の表示部分
に水平配向剤が塗られている場合でも有効であり、又、
注入口及びシールの曲り部分など予めデイスクリネーシ
ヨンの発生が予想される部分のみに施すだけでもかなり
効果的であることが認められた。[Example 4] In Examples 1 to 3, the horizontal alignment agent is applied to the display portions on both surfaces of the pair of substrates. However, the present invention can be applied even when the horizontal alignment agent is applied to the display portion on one side. Is valid and
It has been found that it is quite effective to apply only to the portion where the generation of the discharge is expected in advance such as the bent portion of the inlet and the seal.
実施例１〜３では、オフセツト印刷を用いて水平配向剤
を必要な部分のみに塗布したがスピンナーなどを用いて
全面に塗布した後、部分的に拭き取るのも効果的であつ
た。In Examples 1 to 3, the horizontal aligning agent was applied only to a necessary portion by offset printing, but it was also effective to partially wipe the horizontal aligning agent after applying it using a spinner or the like.
本発明の本来の目的は、注入口、シールの曲り部分、シ
ールの壁面の大きな凸凹が有る部分からのディスクリネ
ーシヨンの発生を防ぐことであつたが、液晶をセル内に
注入する際シールの際に残つた気泡からのデイスクリネ
ーシヨンの発生をも防ぐ効果が有ることが認められた。The original purpose of the present invention was to prevent the generation of disclination from the injection port, the bent portion of the seal, and the portion having large irregularities on the wall surface of the seal. It was confirmed that it also has an effect of preventing the generation of the screen cleansing from the bubbles left at the time.
本発明は、前記電極によって形成される表示部分には、
前記液晶を前記基板と平行に配向させるための水平配向
膜が形成されてなり、前記表示部分と前記シール材との
間の非表示部分には、前記液晶を垂直に配向させるため
の垂直配向膜が形成されているので、注入口、シールの
曲がり部分、及びシールの壁面の凹凸から発生するデイ
スクリネーションを防止することができる。According to the present invention, the display portion formed by the electrodes includes
A horizontal alignment film for aligning the liquid crystal in parallel with the substrate is formed, and a vertical alignment film for vertically aligning the liquid crystal in a non-display portion between the display portion and the sealing material. Since the ridges are formed, it is possible to prevent disclination that occurs from the inlet, the bent portion of the seal, and the unevenness of the wall surface of the seal.
第１図は、本発明の注入口側のシール部分と表示部分の
間に水平配向膜を有しない液晶表示装置の平面図。 第２図は、第１図のＡ−Ａ′での断面図。 第３図は本発明の表示部分のみに水平配向剤を塗布した
液晶表示装置の平面図。 第４図は、第３図のＢ−Ｂ′での断面図。 第５図は本発明の表示部分とシールの間に垂直配向剤を
塗布した液晶表示装置の平面図。 第６図は、第５図のＣ−Ｃ′での断面図。 １……下側ガラス基板 ２……上側ガラス基板 ３……シール材 ４……水平配向剤 ５……電極 ６……垂直配向剤FIG. 1 is a plan view of a liquid crystal display device according to the present invention having no horizontal alignment film between a seal portion on the injection port side and a display portion. FIG. 2 is a sectional view taken along the line AA ′ in FIG. FIG. 3 is a plan view of a liquid crystal display device in which a horizontal alignment agent is applied only to the display portion of the present invention. FIG. 4 is a sectional view taken along the line BB ′ in FIG. 3. FIG. 5 is a plan view of a liquid crystal display device in which a vertical alignment agent is applied between the display portion and the seal of the present invention. FIG. 6 is a sectional view taken along the line CC ′ of FIG. 1 ... Lower glass substrate 2 ... Upper glass substrate 3 ... Sealing material 4 ... Horizontal aligning agent 5 ... Electrode 6 ... Vertical aligning agent
Claims (1)
板をシール材によって固定してなり、前記一対の基板間
に強誘電性液晶を挟持してなる液晶表示装置において、
前記電極によって形成される表示部分には、前記液晶を
前記基板と平行に配向させるための水平配向膜が形成さ
れてなり、前記表示部分と前記シール材との間の非表示
部分には、前記液晶を垂直に配向させるための垂直配向
膜が形成されてなることを特徴とする液晶表示装置。1. A liquid crystal display device in which a pair of substrates having electrodes on inner surfaces of opposed substrates are fixed by a sealant, and a ferroelectric liquid crystal is sandwiched between the pair of substrates.
A horizontal alignment film for aligning the liquid crystal in parallel with the substrate is formed in the display portion formed by the electrodes, and the non-display portion between the display portion and the sealing material is A liquid crystal display device comprising a vertical alignment film for vertically aligning liquid crystals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61045869A JPH07119911B2 (en) | 1986-03-03 | 1986-03-03 | Liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61045869A JPH07119911B2 (en) | 1986-03-03 | 1986-03-03 | Liquid crystal display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62203128A JPS62203128A (en) | 1987-09-07 |
| JPH07119911B2 true JPH07119911B2 (en) | 1995-12-20 |
Family
ID=12731208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61045869A Expired - Lifetime JPH07119911B2 (en) | 1986-03-03 | 1986-03-03 | Liquid crystal display |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07119911B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2722576B2 (en) * | 1988-12-12 | 1998-03-04 | セイコーエプソン株式会社 | Liquid crystal device and method of manufacturing the same |
| CA2121776C (en) * | 1993-04-28 | 1999-05-25 | Yasuto Kodera | Liquid crystal device with a liquid crystal in an optical modulation region having a pretilt angle smaller than the liquid crystal in a peripheral region surrounding the optical modulation region |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59214824A (en) * | 1983-05-20 | 1984-12-04 | Seiko Epson Corp | liquid crystal electro-optical device |
| JPS6123118A (en) * | 1984-07-12 | 1986-01-31 | Hitachi Ltd | Optical switch element |
| JPS61151616A (en) * | 1984-12-26 | 1986-07-10 | Alps Electric Co Ltd | Liquid crystal light valve |
-
1986
- 1986-03-03 JP JP61045869A patent/JPH07119911B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62203128A (en) | 1987-09-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |