JPS62153833A - Driving system for liquid crystal optical shutter - Google Patents
Driving system for liquid crystal optical shutterInfo
- Publication number
- JPS62153833A JPS62153833A JP29740285A JP29740285A JPS62153833A JP S62153833 A JPS62153833 A JP S62153833A JP 29740285 A JP29740285 A JP 29740285A JP 29740285 A JP29740285 A JP 29740285A JP S62153833 A JPS62153833 A JP S62153833A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- crystal display
- display element
- type liquid
- driving
- 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
Landscapes
- Liquid Crystal (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、２層構造の液晶光シャッターの駆動方式に関
する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a driving method for a liquid crystal optical shutter having a two-layer structure.
〈発明の概要〉
本発明は、２枚の液晶表示素子を別々に駆動し、ポジ型
液晶表示素子はネガ型液晶表示素子の駆動解除後の所定
期間のみ駆動することにより、低消費電力で、かつ高速
に７ヤツターを開閉するものである。<Summary of the Invention> The present invention enables low power consumption by driving two liquid crystal display elements separately, and driving the positive type liquid crystal display element only for a predetermined period after the negative type liquid crystal display element is released from driving. It also opens and closes the 7-layer at high speed.
く従来の技術〉
従来は、１つの液晶セルと偏光板を重ね合わせて光の開
閉動作を行なう液晶シャッターを単独で用いていた。Conventional technology In the past, a liquid crystal shutter was used alone, in which one liquid crystal cell and a polarizing plate were stacked to open and close light.
〈発明が解決しようとする問題点〉
し〃菖し、液晶表示素子を光シヤツターとして使用する
場合、従来の液晶表示素子では印加電力を切った時の液
晶の立ち下り応答速度が遅い為、ポジ型液晶表示素子で
は遮光状態から透過状態への変化が遅く、ネガ型液晶表
示素子では逆に透過状態から遮光状態への変化が遅い。<Problems to be Solved by the Invention> When using a liquid crystal display element as a light shutter, the response speed of the liquid crystal falling when the applied power is cut off is slow in the conventional liquid crystal display element, so the positive In a type liquid crystal display element, the change from a light-blocking state to a light-blocking state is slow, and in a negative-type liquid crystal display element, on the contrary, the change from a light-blocking state to a light-blocking state is slow.
このことは液晶光シャッターを高速度の元ツヤツタ−と
して用いるには都合が悪い。This is inconvenient for using the liquid crystal optical shutter as a high-speed shutter.
本発明は、上記点に鑑みてなされ念ものであり、低消費
電力で、かつ高速度、高性能の液晶光シャッターを提供
する１ことを目的とする０く問題点を解決するための手
段〉
本発明は、ネガ型液晶表示素子を液晶光シャツターの透
過状態に応じて駆動し、ポジ型液晶表示素子は前記ネガ
型液晶表示素子の駆動解除後の所定期間のみ１を動する
ものである。The present invention has been made in view of the above points, and aims to provide a liquid crystal optical shutter with low power consumption, high speed, and high performance. In the present invention, a negative type liquid crystal display element is driven according to the transmission state of a liquid crystal light shutter, and a positive type liquid crystal display element is moved only for a predetermined period after the driving of the negative type liquid crystal display element is released.
く作用〉
上記方式で、駆動することにより、遮光状態から透過状
態への変化、及び透過状態から遮光状態への変化が速く
なり、又ポジ型液晶表示素子は所定期間の駆動だけであ
り低消費電力にできる〇〈実施例〉
第１図、第２図に本発明の一実施例を示す。By driving with the above method, the change from the light-shielding state to the transmitting state and from the transmitting state to the light-shielding state becomes faster, and the positive type liquid crystal display element only needs to be driven for a predetermined period, resulting in low consumption. Fig. 1, Fig. 2 shows an example of the present invention.
第１図は本発明の液晶光シャッターを示しており、ネガ
型液晶表示素子１とポジ型液晶表示素子２とを重ね合わ
せた２層構造である。このネガ型液晶表示素子ｌは偏光
板３と液晶セル４と偏光板５とを重ね合わせた構造であ
り、前記偏光板３と偏光板５はその偏光軸が互いに平行
になるように配置している。また、ポジ型液晶表示素子
２は偏光板５を共用して偏光板５と液晶セル６と偏光板
７とを重ね合わせた構造であり、前記偏光板５と偏光板
７はその偏光軸が互いに直交するように配置される。FIG. 1 shows a liquid crystal optical shutter of the present invention, which has a two-layer structure in which a negative type liquid crystal display element 1 and a positive type liquid crystal display element 2 are stacked. This negative type liquid crystal display element l has a structure in which a polarizing plate 3, a liquid crystal cell 4, and a polarizing plate 5 are stacked, and the polarizing plate 3 and the polarizing plate 5 are arranged so that their polarization axes are parallel to each other. There is. Further, the positive type liquid crystal display element 2 has a structure in which the polarizing plate 5, the liquid crystal cell 6, and the polarizing plate 7 are stacked together by sharing the polarizing plate 5, and the polarizing plate 5 and the polarizing plate 7 have their polarization axes mutually. arranged orthogonally.
第２図は液晶光ンヤノターの駆動状態を表しており、ネ
ガ型液晶表示素子１は、駆動信号頓により、駆動され、
その透過及び遮光状態は（ｃ）のようになる。また、ポ
ジ型液晶表示素子２は、駆動信号（ｂ）により駆動され
、その透過状態は（ｄ）のようになる。FIG. 2 shows the driving state of the liquid crystal display device, in which the negative type liquid crystal display element 1 is driven by the drive signal 1,
The transmission and light shielding states are as shown in (c). Further, the positive type liquid crystal display element 2 is driven by the drive signal (b), and its transmission state is as shown in (d).
ここで、液晶光シャッターを透過状態とするためにネガ
型液晶表示素子ＩＫ、駆動信号（ａ）を印加しく図中１
．）、ネガ型液晶表示素子１を透過状態とする。Here, in order to make the liquid crystal light shutter into a transmitting state, a driving signal (a) is applied to the negative liquid crystal display element IK.
．． ), the negative type liquid crystal display element 1 is brought into a transmissive state.
（このときポジ型液晶表示素子２は非印加状態なので透
過状態である。）造次に液晶光シャッターを遮光状態と
するために、ネガ型液晶表示素子１の駆動信号を切り、
ポジ型液晶表示素子２に駆動信号ら）を印加する（図中
１２１．＋このとき、前記ネガ型液晶表示素子Ｉは立ち
下がり時の応答が遅いため透過状態と遮光状態の中間の
状態（図中ｔ２−１３間）が生じる。しかし、この時ポ
ジ型液晶表示素子２を駆動し、遮光状態としているので
、液晶光シャッターとしては遮光状態である。この液晶
光シャッターは、２枚の液晶表示素子のうちいずれか一
方が完全に遮光していれば液晶光シャッターは遮光状態
であるので、ポジ型液晶表示素子２は、ネガ型液晶表示
素子１が完全に遮光した時点後に駆動を終了する。（図
中ｔ３）０このポジ型液晶表示素子２を液晶光シャッタ
ーの遮光状態の間（図中ｔ２−ｔ４間）駆動してもよい
が、本方式のようにすれば低消費電力とすることができ
る。(At this time, the positive type liquid crystal display element 2 is in the transmitting state because no voltage is applied.) Next, in order to put the liquid crystal optical shutter into the light blocking state, the drive signal for the negative type liquid crystal display element 1 is turned off.
A driving signal (121 in the figure) is applied to the positive liquid crystal display element 2 (121 in the figure). However, at this time, the positive type liquid crystal display element 2 is driven and is in a light-shielding state, so the liquid crystal light shutter is in a light-shielding state. If any one of the elements completely blocks light, the liquid crystal light shutter is in a light-blocking state, so the positive type liquid crystal display element 2 ends its driving after the negative type liquid crystal display element 1 completely blocks light. (t3 in the figure) 0 This positive type liquid crystal display element 2 may be driven while the liquid crystal light shutter is in the light-shielding state (between t2 and t4 in the figure), but this method reduces power consumption. I can do it.
このことＫより、低消費電力の駆動をもって、液晶シャ
ッターは（ｅ）のように、透過状態から遮光状態への変
化及び遮光状態から透過状態への変化を高速化でき、ま
た透過状態と遮光状態との中間の状態がなくなるので、
高性能とすることができるＯ
なお、この液晶光シャッターは、ビデオディスクなどの
立体映像再生ンステム用の液晶眼鏡に最適である。From this K, by driving with low power consumption, the liquid crystal shutter can speed up the change from the transmitting state to the light-shielding state and from the light-shielding state to the transmitting state, as shown in (e), and can also change between the transmitting state and the light-shielding state. Since there is no intermediate state between
This liquid crystal optical shutter is ideal for liquid crystal glasses for stereoscopic image reproduction systems such as video discs.
〈発明の効果〉
以上のように本発明によれば、高速にシャッターの開閉
ができ、しかも高性能、低消費電力である液晶光／ヤッ
ターの、駆動方式を提供できる。<Effects of the Invention> As described above, according to the present invention, it is possible to provide a driving method for a liquid crystal light/yatter that can open and close a shutter at high speed, has high performance, and has low power consumption.
第１図は本発明の一実施例を示す分解斜視図、第２図＃
雰キ≠は同駆動波形図である。
１・・・ネガ型液晶表示素子、２・・・ポジ型液晶表示
素子、３．５．７・・・偏光板、４．６・・・液晶セル
、（ａ）・・・ネガ型液晶表示素子の駆動信号、（ｂ’
ｌ・・・ポジ型液晶表示素子の駆動信号、（ｃ）・・・
ネガ型液晶表示素子の透過率曲線、（ｄ）・・・ポジ型
液晶表示素子の透過率曲線、（ｅ）・・・液晶光シャッ
ターの透過率曲線。
代理人 弁理士 福 士 愛 彦 （他２名）ｌＩガ型
液晶襄元嚇蛋
第１図
１虜°シ゛Ｖ！痕＆塵預賽シFig. 1 is an exploded perspective view showing one embodiment of the present invention, Fig. 2 #
Atmosphere≠ is the same driving waveform diagram. DESCRIPTION OF SYMBOLS 1... Negative type liquid crystal display element, 2... Positive type liquid crystal display element, 3.5.7... Polarizing plate, 4.6... Liquid crystal cell, (a)... Negative type liquid crystal display Drive signal of the element, (b'
l... Drive signal for positive liquid crystal display element, (c)...
Transmittance curve of negative type liquid crystal display element, (d)... Transmittance curve of positive type liquid crystal display element, (e)... Transmittance curve of liquid crystal optical shutter. Agent: Patent attorney Aihiko Fukushi (and 2 others) Traces & dust deposits
Claims (1)
構造とした液晶光シャッターであり、前記ネガ型液晶表
示素子は液晶光シャッターの透過状態に応じて駆動信号
を印加し、前記ポジ型液晶表示素子は前記ネガ型液晶表
示素子の駆動信号の印加解除後の所定期間のみ駆動信号
を印加してなることを特徴とする液晶光シャッターの駆
動方式。1. A liquid crystal optical shutter with a two-layer structure of a negative type liquid crystal display element and a positive type liquid crystal display element, and the negative type liquid crystal display element is applied with a drive signal according to the transmission state of the liquid crystal optical shutter, and the positive type liquid crystal display element is A drive method for a liquid crystal optical shutter, characterized in that a drive signal is applied to the negative-type liquid crystal display element only for a predetermined period after application of the drive signal to the negative-type liquid crystal display element is removed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29740285A JPS62153833A (en) | 1985-12-26 | 1985-12-26 | Driving system for liquid crystal optical shutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29740285A JPS62153833A (en) | 1985-12-26 | 1985-12-26 | Driving system for liquid crystal optical shutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62153833A true JPS62153833A (en) | 1987-07-08 |
Family
ID=17846032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29740285A Pending JPS62153833A (en) | 1985-12-26 | 1985-12-26 | Driving system for liquid crystal optical shutter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62153833A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009534704A (en) * | 2006-04-19 | 2009-09-24 | セトレッド エーエス | Shutter for high-speed display |
| JP2014509756A (en) * | 2011-03-30 | 2014-04-21 | コミトブ，ラヒェザー | Double-cell liquid crystal device with rapid switching |
| US8860790B2 (en) | 2007-08-29 | 2014-10-14 | Setred As | Rendering improvement for 3D display |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50141344A (en) * | 1973-10-23 | 1975-11-13 | ||
| JPS59151194A (en) * | 1983-02-17 | 1984-08-29 | 富士通株式会社 | Display |
-
1985
- 1985-12-26 JP JP29740285A patent/JPS62153833A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50141344A (en) * | 1973-10-23 | 1975-11-13 | ||
| JPS59151194A (en) * | 1983-02-17 | 1984-08-29 | 富士通株式会社 | Display |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009534704A (en) * | 2006-04-19 | 2009-09-24 | セトレッド エーエス | Shutter for high-speed display |
| US9497445B2 (en) | 2006-04-19 | 2016-11-15 | Setred As | High speed display shutter for autostereoscopic display |
| US9628782B2 (en) | 2006-04-19 | 2017-04-18 | Setred As | Bandwidth improvement for 3D display |
| US8860790B2 (en) | 2007-08-29 | 2014-10-14 | Setred As | Rendering improvement for 3D display |
| JP2014509756A (en) * | 2011-03-30 | 2014-04-21 | コミトブ，ラヒェザー | Double-cell liquid crystal device with rapid switching |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5923472A (en) | 3-port optical circulator/switch with mirror | |
| US4761050A (en) | Optical switching device including polarization preserving coupler utilizing Kerr effect and method of using same | |
| EP0127374A3 (en) | Colour liquid crystal display device | |
| EP0376243A3 (en) | A ferroelectric liquid crystal display device | |
| TW373080B (en) | Compact two-by-n optical components based on birefringent walk-off crystals | |
| JPS62153833A (en) | Driving system for liquid crystal optical shutter | |
| JPH0990279A (en) | Polarization independent type optical isolator and optical circulator | |
| JPH01501019A (en) | optical device | |
| JP2001201739A5 (en) | ||
| JPH01191123A (en) | Liquid crystal optical shutter | |
| US4492433A (en) | In-fem liquid crystal display panel with a film of cellophane tape | |
| JPH0391715A (en) | Optical isolator | |
| JP2775499B2 (en) | Optical isolator | |
| JPS5763509A (en) | Imaging device | |
| JPS5849912A (en) | Liquid crystal optical shutter | |
| JPS57161830A (en) | Optical changeover switch | |
| JPS62234124A (en) | Infrared-ray shutter effect type liquid crystal display device | |
| JPS55140820A (en) | 2 input 2 output photo switching device | |
| JPH023010A (en) | Optical wavelength selecting filter | |
| JPH01265228A (en) | Liquid crystal display element | |
| JPH03290612A (en) | Optical isolator device | |
| JPS6156320A (en) | Liquid crystal shutter device | |
| JPH0743696Y2 (en) | Optical isolator | |
| JPS6273225A (en) | Optical switch | |
| JPS6462615A (en) | Liquid crystal optical element |