JPS62247333A - Ferroelectric liquid crystal optical display device - Google Patents
Ferroelectric liquid crystal optical display deviceInfo
- Publication number
- JPS62247333A JPS62247333A JP61091569A JP9156986A JPS62247333A JP S62247333 A JPS62247333 A JP S62247333A JP 61091569 A JP61091569 A JP 61091569A JP 9156986 A JP9156986 A JP 9156986A JP S62247333 A JPS62247333 A JP S62247333A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- polarizing plate
- ferroelectric liquid
- opening angle
- temp
- 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
- 239000005262 ferroelectric liquid crystals (FLCs) Substances 0.000 title claims abstract description 12
- 230000003287 optical effect Effects 0.000 title claims abstract description 8
- 239000004973 liquid crystal related substance Substances 0.000 abstract description 4
- 230000005684 electric field Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は強誘電性液晶光学表示装置の偏光板取り付は方
法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for attaching a polarizing plate to a ferroelectric liquid crystal optical display device.
従来の強誘電性液晶表示装置については、偏光板は室ｍ
（約２０℃）で最もコントラストがとれるような向きに
調整されている。For conventional ferroelectric liquid crystal display devices, the polarizing plate is
(approximately 20 degrees Celsius), the orientation is adjusted to provide the best contrast.
しかし、前述の従来技術では、室温から離れた温度では
コントラストが低下し、表示が見にくくなるという欠点
があった〇
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室温以外でもコントラストが得られ
る液晶表示装置を提供するところＫある。However, the above-mentioned conventional technology had the drawback that the contrast deteriorated and the display became difficult to see at temperatures far from room temperature.The present invention is intended to solve these problems, and its purpose is to There are many other companies that provide liquid crystal display devices that can provide contrast.
本発明の液晶光学表示装置は、偏光板を可動としたこと
を特徴とする。The liquid crystal optical display device of the present invention is characterized in that the polarizing plate is movable.
本発明の上記の構成によれば、強誘電性液晶には第２図
に示したように開き角（２θ）なるものが存在し、電界
を反転させることにより、分子の向きが開き角だけ変化
する。この開き角は温度により変化するため、温度によ
り光学特性が変化する。According to the above configuration of the present invention, the ferroelectric liquid crystal has an opening angle (2θ) as shown in FIG. 2, and by reversing the electric field, the orientation of the molecules changes by the opening angle. do. Since this opening angle changes depending on the temperature, the optical characteristics change depending on the temperature.
この開き角の変化に合わせて偏光板を回転させれば常に
高いフントラストが得られるのである。By rotating the polarizing plate in accordance with the change in the aperture angle, a high fund last can be obtained at all times.
実施例１：
第１図は本発明の実施例における強誘電性液晶光学表示
装置の正面図であり、２，３は偏光板であり互いに直交
している。パネルは通常の駆動を行なう。使用温度に合
わせて２，５を回転させ最適化させた。開き角は通常の
強誘電性液晶で１０゜（４０℃）、１３°（３０℃）、
１５°（２０℃）、１６°（１０℃）であるので偏光板
の調整角は１０℃から４０℃で約６°であった。２０℃
で偏光板を固定した場合４０℃でのコントラストは１：
２．５であるが偏光板を調整しなおすことにより４０℃
でもコントラスト１；８が得られた。Embodiment 1: FIG. 1 is a front view of a ferroelectric liquid crystal optical display device in an embodiment of the present invention, and 2 and 3 are polarizing plates which are orthogonal to each other. The panel operates normally. 2 and 5 were rotated and optimized according to the operating temperature. The opening angle is 10° (40°C), 13° (30°C) for normal ferroelectric liquid crystal,
15° (20°C) and 16° (10°C), the adjustment angle of the polarizing plate was about 6° from 10°C to 40°C. 20℃
When the polarizing plate is fixed at 40℃, the contrast is 1:
2.5, but by readjusting the polarizing plate it can be reduced to 40℃.
However, a contrast of 1:8 was obtained.
また第１図における偏光板の回転軸の位置は図に指定し
た位置でなくてもよく、どこにあってもよい０また偏光
板２の裏面に反射板を貼り、反射型としてもよい。Further, the position of the rotation axis of the polarizing plate in FIG. 1 does not have to be the position specified in the figure, and may be located anywhere. Alternatively, a reflective plate may be attached to the back surface of the polarizing plate 2 to form a reflective type.
実施例２：
実施例１において偏光板２の裏面に反射板を貼り固定す
る。偏光板３のみ可動とする。こうすることにより効果
は小さくなるが調整は簡単となる。Example 2: In Example 1, a reflective plate is pasted and fixed on the back surface of the polarizing plate 2. Only the polarizing plate 3 is movable. By doing this, the effect will be smaller, but adjustment will be easier.
実施例３：
実施例２において、偏光板３を固定し、偏光板２を可動
とする。Example 3: In Example 2, the polarizing plate 3 is fixed and the polarizing plate 2 is movable.
以上述べたように発明によれば、強誘電性液晶の偏光板
を可動とすることにより広範囲な湿度で良好なフントラ
ストが得られるという効果を有する０As described above, according to the invention, by making the polarizing plate of the ferroelectric liquid crystal movable, it is possible to obtain a good fundust over a wide range of humidity.
第１図は本発明の半導体装置の１実施例を示す強誘電性
液晶光学表示装置の正面図。
１・・・液晶を透明電極付き基板で挾んだパネル２．５
・・・偏光板
４．５・・・偏光板の回転中心
第２図は強誘電性液晶表示装置の動作原理を示す概念図
（図中の円すい形中の矢印は分子を示し、電界を反転す
ると分子は歳差運動し他の矢印の位置に移動する。２θ
は開き角である°。）。
以 上FIG. 1 is a front view of a ferroelectric liquid crystal optical display device showing one embodiment of the semiconductor device of the present invention. 1... Panel with liquid crystal sandwiched between substrates with transparent electrodes 2.5
...Polarizing plate 4.5... Center of rotation of the polarizing plate Figure 2 is a conceptual diagram showing the operating principle of a ferroelectric liquid crystal display device (arrows in conical shapes in the figure indicate molecules, and the electric field is reversed. Then the molecule precesses and moves to the position of the other arrow.2θ
is the opening angle °. ). that's all
Claims (1)
表示装置。A ferroelectric liquid crystal optical display device characterized by a movable polarizing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61091569A JPS62247333A (en) | 1986-04-21 | 1986-04-21 | Ferroelectric liquid crystal optical display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61091569A JPS62247333A (en) | 1986-04-21 | 1986-04-21 | Ferroelectric liquid crystal optical display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62247333A true JPS62247333A (en) | 1987-10-28 |
Family
ID=14030156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61091569A Pending JPS62247333A (en) | 1986-04-21 | 1986-04-21 | Ferroelectric liquid crystal optical display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62247333A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0487047A2 (en) * | 1990-11-21 | 1992-05-27 | Canon Kabushiki Kaisha | Optical modulating device |
| EP0890864A1 (en) * | 1996-03-29 | 1999-01-13 | Citizen Watch Co. Ltd. | Liquid crystal display |
| US6157419A (en) * | 1991-06-24 | 2000-12-05 | Canon Kabushiki Kaisha | Projector |
| JP2010145822A (en) * | 2008-12-19 | 2010-07-01 | Alpine Electronics Inc | Structure for mounting polarizing plate |
-
1986
- 1986-04-21 JP JP61091569A patent/JPS62247333A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0487047A2 (en) * | 1990-11-21 | 1992-05-27 | Canon Kabushiki Kaisha | Optical modulating device |
| US5257123A (en) * | 1990-11-21 | 1993-10-26 | Canon Kabushiki Kaisha | Ferroelectric liquid crystal device with temperature compensation by rotation of compensator |
| US6157419A (en) * | 1991-06-24 | 2000-12-05 | Canon Kabushiki Kaisha | Projector |
| EP0890864A1 (en) * | 1996-03-29 | 1999-01-13 | Citizen Watch Co. Ltd. | Liquid crystal display |
| EP0890864A4 (en) * | 1996-03-29 | 2000-08-09 | Citizen Watch Co Ltd | Liquid crystal display |
| JP2010145822A (en) * | 2008-12-19 | 2010-07-01 | Alpine Electronics Inc | Structure for mounting polarizing plate |
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