JPS6113224A - Liquid crystal light bulb for thermal writing - Google Patents
Liquid crystal light bulb for thermal writingInfo
- Publication number
- JPS6113224A JPS6113224A JP13430484A JP13430484A JPS6113224A JP S6113224 A JPS6113224 A JP S6113224A JP 13430484 A JP13430484 A JP 13430484A JP 13430484 A JP13430484 A JP 13430484A JP S6113224 A JPS6113224 A JP S6113224A
- Authority
- JP
- Japan
- Prior art keywords
- film
- liquid crystal
- transparent
- transparent substrate
- crystal alignment
- 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
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/132—Thermal activation of liquid crystals exhibiting a thermo-optic effect
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Mathematical Physics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明はレーザ熱書込みによる高精度ディスプレイ装
置に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) This invention relates to a high precision display device using laser thermal writing.
（従来技術とその問題点）
コンピュータの端末装置に使われるディスプレイ装置は
コンビエータの大容量化及び機能の向上によシ、ますま
す高精度の分解能が必要とされている。特にコンピュー
タを用いた画像処理や新聞紙面の編集、ＬＳＩの設計で
は高精度でかつ部分的に書き加え可能なディスプレイが
望まれている。(Prior art and its problems) Display devices used in computer terminal devices are required to have increasingly high resolution resolution due to the increased capacity and improved functionality of combinators. Particularly in computer-based image processing, newspaper editing, and LSI design, displays that are highly accurate and allow partial additions are desired.
ところが従来よシ用いているＣＲＴ（陰極線管）では、
その分解能を２０００本以上に上げることは難しく、電
子ビームの走査速度も早くなるために画面にチラッキが
生じてしまう。またストレージ管を用いたディスプレイ
装置は、螢光体の劣化を防ぐために画面輝度が低く、部
分的な消去ができず、装置が高価となる欠点がある。However, with the conventionally used CRT (cathode ray tube),
It is difficult to increase the resolution to more than 2,000 lines, and the scanning speed of the electron beam also increases, causing flickering on the screen. Furthermore, display devices using storage tubes have the disadvantage that the screen brightness is low to prevent deterioration of the phosphor, partial erasure cannot be performed, and the device is expensive.
近年、分解能２０００本以上のディスプレイ装置として
液晶ヘレーザで熱書込みをするディスプレイが有望視さ
れておシ、この熱書込み液晶ディスプレイについては、
例えば雑誌「プロシーディング・オブ・ザ・ニス・アイ
・デー（Ｐｒｏｃｅｓ＋ｓｉｎｇｏｆ ｔｈｅ Ｓ、１
．Ｄ、） Ｊ １９７８年１〜７頁に記載の論文「レー
ザ選択液晶投射ディスプレイ（ＬＡＳＥＲ−ＡＤＤＲＥ
ＳＳＥＤ ＬＩＱＵＩＤ ＣＲＹＳＴＡＬ ＰＲＯＪ−
ＥＣＴＩＯＮ ＤＩＳＰＬＡＹＳ）Ｊに詳しく述べられ
ている。この論文によれば、第１図に示すような液晶ラ
イトバルブ１０にレーザ光８による走査で画像を記録し
、投射光９を反射させて上記画像をディスプレイするこ
とができる。In recent years, displays that thermally write with a liquid crystal laser have been viewed as promising as display devices with a resolution of 2,000 lines or more.
For example, the magazine ``Procedures+sing of the S, 1
．． D, ) J 1978, pages 1-7, ``Laser-Selective Liquid Crystal Projection Display (LASER-ADDRE)''.
SSED LIQUID CRYSTAL PROJ-
ECTION DISPLAYS) J. According to this paper, an image can be recorded on a liquid crystal light valve 10 as shown in FIG. 1 by scanning with laser light 8, and the image can be displayed by reflecting projection light 9.
液晶ライトバルブ１０は、レーザ光吸収膜２、アルミ反
射膜３、液晶配向膜４をその上に形成した透明基盤１と
、透明電極膜５、液晶配向膜４を“その上に形成した透
明基盤６とで液晶材７をはさんだ構造をもっている。レ
ーザ光８が液晶ライトバルブ１０に入射するとレーザ光
８が光吸収膜２に吸収され熱に変換され、アルミ反射膜
３、液晶配向膜４を伝わって液晶材７の温度を上昇させ
る。The liquid crystal light valve 10 includes a transparent substrate 1 on which a laser light absorption film 2, an aluminum reflection film 3, and a liquid crystal alignment film 4 are formed, and a transparent substrate 1 on which a transparent electrode film 5 and a liquid crystal alignment film 4 are formed. 6 and a liquid crystal material 7 sandwiched therebetween. When the laser beam 8 enters the liquid crystal light valve 10, the laser beam 8 is absorbed by the light absorption film 2 and converted into heat, and the aluminum reflective film 3 and the liquid crystal alignment film 4 are heated. The temperature of the liquid crystal material 7 increases.
液晶材７としてはスメクチック液晶が使われ、スメクチ
ック液晶は温度が上昇することによってネマチック相、
液体相に変化し、レーザ光８が取〕除かれた時に急冷さ
れる。この時、液葎状態のランダムな液晶分子の配向状
態が凍結されて散乱核が形成される特性をもつ。この散
乱核は投射光９によって読みだ亭れ、スクリーン上に画
一としてディスプレイされる。散乱核によって１０／１
ｍ程度の微小幅の線が形成できるので、２インチ角の液
晶ライトバルブには５０００本もの線が記録されること
になル、従来のＣＲＴに比べて非常に高分解能なディス
プレイが可能になる。ディスプレイ画面を消去するには
、アルミ反射膜３と透明電極膜−５との間に電圧を印加
して液晶を再び配向させればよい。A smectic liquid crystal is used as the liquid crystal material 7, and the smectic liquid crystal changes into a nematic phase as the temperature increases.
It changes to a liquid phase and is rapidly cooled when the laser beam 8 is removed. At this time, the random orientation state of liquid crystal molecules in the liquid state is frozen and scattering nuclei are formed. This scattering nucleus is read out by the projection light 9 and displayed uniformly on the screen. 10/1 by scattering nucleus
Since it is possible to form lines with a width as small as 1.5 m, as many as 5,000 lines can be recorded on a 2-inch square liquid crystal light valve, making it possible to create displays with extremely high resolution compared to conventional CRTs. . In order to erase the display screen, a voltage may be applied between the aluminum reflective film 3 and the transparent electrode film-5 to reorient the liquid crystal.
ところが、液晶を再び配向させるためＫはアルミ反射膜
３と透明電極膜５との間にかな９大きな電界（６０００
Ｖ／ａｘ〜７０００Ｖ／ＣＭ）を印加する必要があ）、
液晶配向膜４にピンホール等の欠陥があった場合、その
欠陥に電荷が集中しアルミ反射膜３と透明電極膜５との
間にシ冒−トが発生し、アルミ反射膜３が破壊され液晶
ライトバルブの機能″が失われるという問題があった。However, in order to reorient the liquid crystal, K applies a large electric field (6000 K) between the aluminum reflective film 3 and the transparent electrode film 5.
It is necessary to apply V/ax~7000V/CM),
If there is a defect such as a pinhole in the liquid crystal alignment film 4, charges will concentrate on the defect and a sheet will be generated between the aluminum reflective film 3 and the transparent electrode film 5, and the aluminum reflective film 3 will be destroyed. There was a problem that the function of the liquid crystal light valve was lost.
そのため、特願昭５８−００７８７４ ｒ熱書込み液
晶ライトバルブ」に示されているように第２図に示すよ
うな透明電極膜５．光吸収膜２．アルミ反射膜３．液晶
配向６とで液晶材７をはさんだ構造をもつ液晶ライトバ
ルブも考案されたが、このショート問題を完全に解決す
るには至っていない。Therefore, as shown in Japanese Patent Application No. 58-007874 "Thermal Writing Liquid Crystal Light Valve", a transparent electrode film 5. as shown in FIG. Light absorption film 2. Aluminum reflective film 3. A liquid crystal light valve having a structure in which a liquid crystal material 7 is sandwiched between liquid crystal alignment members 6 has also been devised, but this short circuit problem has not been completely solved.
（発明の目的）
本発明は、このような従来の液晶ライトバルブで発生し
ていた電界印加によるショートの問題を解決して、信頼
性の高い熱書込み液晶ライトバルブを提供するものであ
る。(Objective of the Invention) The present invention provides a highly reliable thermal writing liquid crystal light valve by solving the problem of short circuits caused by the application of an electric field that occur in conventional liquid crystal light valves.
（発明の構成）
本発明によれば、透明基盤上に少なく゛とも光吸収膜、
アルミ反射膜及び液晶配向膜を順次積層した第１の基盤
と、透明基盤上に少なくとも透明電極膜及び液晶配向膜
を順次積層した第２の基盤と、液晶とからなり、前記両
基盤の表面の液晶配向膜間に前記液晶をはさんで一体的
に構成した熱書込み液晶ライトバルブにおいて、アルミ
反射膜と液晶配向膜との間又は透明電極膜と液晶配向膜
との間の少なくともいずれか一方に透明誘電体膜を構成
したことを特徴とする熱書込み液晶ライトバルブが得ら
れる。(Structure of the Invention) According to the present invention, at least a light absorbing film on a transparent substrate,
It consists of a first substrate in which an aluminum reflective film and a liquid crystal alignment film are sequentially laminated, a second substrate in which at least a transparent electrode film and a liquid crystal alignment film are sequentially laminated on a transparent substrate, and a liquid crystal; In a thermal writing liquid crystal light valve integrally configured with the liquid crystal sandwiched between liquid crystal alignment films, at least one of between the aluminum reflective film and the liquid crystal alignment film or between the transparent electrode film and the liquid crystal alignment film. A thermal writing liquid crystal light valve characterized by comprising a transparent dielectric film is obtained.
（実施例）
以下本発明の実施例について図面を参照して詳細に説明
する。(Example) Examples of the present invention will be described in detail below with reference to the drawings.
第３図は本発明による液晶ライトバルブの第一の実施例
を示す断面図である。従来の液晶ライトバルブ（１ｉ１
１図に示したもの）に対し、本発明の液晶ライトバルブ
では透明基盤４７上の透明電極膜４６と液晶配向膜４４
との間に新たに透明誘電体膜４５を形成している。第３
図において、第１のガラス基盤４１上に光吸収膜４２、
光反射膜４３、液晶配向膜４４を構成し、また第２の透
明基盤４７上に透明電極膜４６、透明誘電体膜４５、液
晶配向膜４４を構成して、これらガラス基盤４１．４７
の両液晶配向膜４４，４４間に液晶４８を゛はさみ込ん
で一体構造とする。゛透明電極膜４６は液晶４８に電圧
を印加するための一方の膜で、この実施例ではＩＴＯ（
インジウム・ティン・オキサイド）膜を用いた。光吸収
膜４２はレーザ光４９を吸収するもので金属薄膜２色素
薄膜、半導体薄膜等を用いる。例えばＡｒレーザ用には
ＣｄＴｅ膜を用いることができる。光反射膜４３は投射
光５０を反射し、かつもう一方の電極膜となるもので本
実施例ではＡＩ膜を用いた。液晶配向膜４４は液晶分子
を配向させるためのもので斜め蒸着したＳｓＯ膜を用い
た。また、透明誘電体膜４５はアルミ反射膜４３と透明
電極膜４６との間の絶縁性を増大させるためのもので高
い絶縁性を有し、成膜性の良いｓｉｏ、膜、 ＳｓＯ膜
、 ＴＩＯ膜、 ＣｓＯｓ膜。FIG. 3 is a sectional view showing a first embodiment of a liquid crystal light valve according to the present invention. Conventional LCD light valve (1i1
1), the liquid crystal light valve of the present invention has a transparent electrode film 46 on a transparent substrate 47 and a liquid crystal alignment film 44.
A transparent dielectric film 45 is newly formed between the two. Third
In the figure, a light absorption film 42 is placed on a first glass substrate 41,
A light reflecting film 43 and a liquid crystal alignment film 44 are formed, and a transparent electrode film 46, a transparent dielectric film 45, and a liquid crystal alignment film 44 are formed on a second transparent substrate 47, and these glass substrates 41, 47 are formed.
A liquid crystal 48 is sandwiched between both liquid crystal alignment films 44, 44 to form an integral structure. ``The transparent electrode film 46 is one of the films for applying voltage to the liquid crystal 48, and in this embodiment, it is made of ITO (
Indium tin oxide) film was used. The light absorption film 42 absorbs the laser beam 49, and is made of a metal thin film, a two-dye thin film, a semiconductor thin film, or the like. For example, a CdTe film can be used for Ar laser. The light reflecting film 43 reflects the projected light 50 and serves as the other electrode film, and in this embodiment, an AI film is used. The liquid crystal alignment film 44 is for aligning liquid crystal molecules, and is an SsO film deposited obliquely. In addition, the transparent dielectric film 45 is for increasing the insulation between the aluminum reflective film 43 and the transparent electrode film 46, and has high insulation properties, and is made of sio film, SsO film, TIO film, which has good film formability. membrane, CsOs membrane.
Ｔａ、Ｏｓ膜、 ’ｒｈｏ、膜、 ＺｒＯ，膜及びＭｇ
Ｆ、膜等を用いることができる。Ta, Os film, 'rho, film, ZrO, film and Mg
F, membrane, etc. can be used.
第４図は本発明による液晶ライトバルブの第２の実施例
を示す断面図である。第１の実施例において透明基盤４
７上の透明電極膜４６と液晶配向膜４４との間に透明誘
電体膜４５を構成しているのに対し、透明基盤４１上の
アルミ反射膜４３と液晶配向膜４４との間に透明誘電体
膜５１を構成していることを除き第１の実施例と同じで
ある。FIG. 4 is a sectional view showing a second embodiment of the liquid crystal light valve according to the present invention. In the first embodiment, the transparent substrate 4
A transparent dielectric film 45 is formed between the transparent electrode film 46 on the transparent substrate 41 and the liquid crystal alignment film 44, while a transparent dielectric film 45 is formed between the aluminum reflective film 43 on the transparent substrate 41 and the liquid crystal alignment film 44. This embodiment is the same as the first embodiment except that it constitutes a body membrane 51.
上記のように透明誘電体膜４５．５１をアルミ反射膜４
３と透明電極膜４６との間に形成することによシ、従来
の液晶ライトバルブ（第１図に示し７’ｃ４の）におい
て問題となっていたピンホール等の欠陥に電荷が集中す
ることによるショートを防ぐことができる。As mentioned above, the transparent dielectric film 45.51 is attached to the aluminum reflective film 4.
3 and the transparent electrode film 46, electric charges can be concentrated on defects such as pinholes, which have been a problem in conventional liquid crystal light valves (7'c4 shown in FIG. 1). This can prevent short circuits caused by
（発明の効果）
本発明（第３図に示したもの）と従来の液晶ライトバル
ブ（第１図に示したもの）において、液晶を配向させる
ために必要な電圧と液晶ライトバルブの耐圧を測定した
結果を第５図の表に示す。(Effect of the invention) Measurement of the voltage required to align the liquid crystal and the withstand voltage of the liquid crystal light valve in the present invention (shown in Figure 3) and the conventional liquid crystal light valve (shown in Figure 1) The results are shown in the table in Figure 5.
測定条件は、温度は４０℃、印加交流電圧の周波数は１
０ＫＨｚであシ、液晶層の厚さは１０−’ｍである。測
定に用いた透明誘電体膜は高周波スパッタリングで形成
したＳ１０．膜で厚さは５Ｘ１０−”ｍ以上である。第
５図に示したように従来の液晶ライトバルブ（第１図に
示したもの）ではすべてショ゛−トが発生したが、本発
明による液晶ライトバルブ（第３図に示したもの）では
、Ｓ１０．膜が５Ｘ１０−’Ｆ＃以上ではショートの発
生はなかった。The measurement conditions were a temperature of 40°C and a frequency of applied AC voltage of 1.
The frequency is 0 KHz, and the thickness of the liquid crystal layer is 10-'m. The transparent dielectric film used in the measurements was S10. The film has a thickness of 5 x 10-"m or more.As shown in Fig. 5, shorts occurred in all conventional liquid crystal light valves (shown in Fig. 1), but the liquid crystal light valve according to the present invention In the light valve (shown in FIG. 3), no short circuit occurred when the S10. film was 5X10-'F# or more.
このような効果は、透明誘電体膜としてＳｉｎ、膜の他
゛にＳｉｎ膜、ＴＩＯ，膜を用いた場合でも同じょうに
得られた。Such effects were similarly obtained when using a Sin film or a TIO film in addition to a Sin film as the transparent dielectric film.
また、透明誘電体膜を透明電極膜と液晶配向膜との間に
形成したことによシ従来の液晶ライトバルブに比べ熱的
絶縁性が良くなるため、コントラストも１．５倍以上に
向上した結果が得られ、コントラスト向上にも有効であ
る。In addition, by forming a transparent dielectric film between the transparent electrode film and the liquid crystal alignment film, thermal insulation is improved compared to conventional liquid crystal light valves, and the contrast is also improved by more than 1.5 times. results and is also effective in improving contrast.
尚、本発明の効果は第２図に示したような構造をも゛つ
液晶ライトバルブの場合でも有効であることは言うまで
もない。It goes without saying that the effects of the present invention are also effective in the case of a liquid crystal light valve having a structure as shown in FIG.
以上詳細に説明したように、本発明によれば液晶を配向
させるために電界を印加した時に発生するショート問題
を解決でき、高い信頼性を有する液晶ライトバルブを得
ることができる。As described in detail above, according to the present invention, it is possible to solve the short circuit problem that occurs when an electric field is applied to orient liquid crystals, and it is possible to obtain a highly reliable liquid crystal light valve.
第１図及び第２図は従来の液晶ライトバルブを略示的に
示す断面図、第３図は本発明による液晶ライトバルブの
第１の実施例を略示的に示す断面の効果を示す図である
。
図において、１，６，４１．４７は透明基盤、２゜４２
は光吸収膜、３，４３はアルミ反射膜、４゜４４は液晶
配向膜、５，４６は透明電極膜、７゜４８は液晶、８，
４９はレーザ光、９．５０は投射嚢、４５．５１は透明
誘電体膜を示す。
巾雇人弁理士 内原
オ １ 図
第２図
７？３図
第４図1 and 2 are cross-sectional views schematically showing a conventional liquid crystal light valve, and FIG. 3 is a cross-sectional view schematically showing a first embodiment of a liquid crystal light valve according to the present invention. It is. In the figure, 1, 6, 41.47 are transparent substrates, 2°42
is a light absorption film, 3, 43 is an aluminum reflective film, 4°44 is a liquid crystal alignment film, 5, 46 is a transparent electrode film, 7°48 is a liquid crystal, 8,
49 is a laser beam, 9.50 is a projection bag, and 45.51 is a transparent dielectric film. Hired Patent Attorney O Uchihara 1 Figure 2 Figure 7?3 Figure 4
Claims (1)
液晶配向膜を積層した第１の基盤と、透明基盤上に少な
くとも透明電極膜及び液晶配向膜を積層した第２の基盤
と、液晶とからなり、前記両基盤の表面の液晶配向膜間
に前記液晶をはさんで一体的に構成した熱書込み液晶ラ
イトバルブにおいて、光反射膜と液晶配向膜との間と透
明電極膜と液晶配向膜との間の少なくともいずれか一方
に透明誘電体膜を構成したことを特徴とする熱書込み液
晶ライトバルブ。(1) A first substrate in which at least a light absorption film, a light reflection film and a liquid crystal alignment film are laminated on a transparent substrate; a second substrate in which at least a transparent electrode film and a liquid crystal alignment film are laminated on a transparent substrate; and a liquid crystal substrate. In the thermal writing liquid crystal light valve integrally constructed by sandwiching the liquid crystal between the liquid crystal alignment films on the surfaces of both substrates, there is a space between the light reflection film and the liquid crystal alignment film, and a transparent electrode film and the liquid crystal alignment film. 1. A thermal writing liquid crystal light valve comprising a transparent dielectric film on at least one side between the film and the film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13430484A JPS6113224A (en) | 1984-06-29 | 1984-06-29 | Liquid crystal light bulb for thermal writing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13430484A JPS6113224A (en) | 1984-06-29 | 1984-06-29 | Liquid crystal light bulb for thermal writing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6113224A true JPS6113224A (en) | 1986-01-21 |
Family
ID=15125156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13430484A Pending JPS6113224A (en) | 1984-06-29 | 1984-06-29 | Liquid crystal light bulb for thermal writing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6113224A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0292330A2 (en) * | 1987-05-22 | 1988-11-23 | The Mead Corporation | Transparent laser-addressed liquid crystal light modulator cell |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5269344A (en) * | 1975-12-05 | 1977-06-09 | Hitachi Ltd | Formation of electrode |
| JPS58102921A (en) * | 1981-12-16 | 1983-06-18 | Alps Electric Co Ltd | Production of liquid crystal cell |
| JPS58106590A (en) * | 1981-12-21 | 1983-06-24 | 日本電気株式会社 | Positive type light valve |
| JPS58129418A (en) * | 1982-01-28 | 1983-08-02 | Alps Electric Co Ltd | Manufacture of liquid crystal cell |
-
1984
- 1984-06-29 JP JP13430484A patent/JPS6113224A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5269344A (en) * | 1975-12-05 | 1977-06-09 | Hitachi Ltd | Formation of electrode |
| JPS58102921A (en) * | 1981-12-16 | 1983-06-18 | Alps Electric Co Ltd | Production of liquid crystal cell |
| JPS58106590A (en) * | 1981-12-21 | 1983-06-24 | 日本電気株式会社 | Positive type light valve |
| JPS58129418A (en) * | 1982-01-28 | 1983-08-02 | Alps Electric Co Ltd | Manufacture of liquid crystal cell |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0292330A2 (en) * | 1987-05-22 | 1988-11-23 | The Mead Corporation | Transparent laser-addressed liquid crystal light modulator cell |
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