JP2537635B2 - Recording method of optical writing type liquid crystal light valve - Google Patents
Recording method of optical writing type liquid crystal light valveInfo
- Publication number
- JP2537635B2 JP2537635B2 JP62211907A JP21190787A JP2537635B2 JP 2537635 B2 JP2537635 B2 JP 2537635B2 JP 62211907 A JP62211907 A JP 62211907A JP 21190787 A JP21190787 A JP 21190787A JP 2537635 B2 JP2537635 B2 JP 2537635B2
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- light valve
- light
- voltage
- recording method
- 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
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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
- G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/13743—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on electrohydrodynamic instabilities or domain formation in liquid crystals
- G02F1/1375—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on electrohydrodynamic instabilities or domain formation in liquid crystals using dynamic scattering
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Liquid Crystal (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal Display Device Control (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は光導電効果を用いて、光により画像を液晶層
に書き込む液晶ライトバルブの記録方法に関するもので
ある。Description: TECHNICAL FIELD The present invention relates to a recording method of a liquid crystal light valve for writing an image on a liquid crystal layer by light using a photoconductive effect.
従来の光導電効果を用いた液晶ライトバルブの記録方
法は特開昭59−216126やSID´79タイジェストp.22（197
9）に開示されるように、光照射による光導電体のイン
ピーダンス変化を利用し、液晶層に加わる分電圧を変化
させ、液晶の配向変化を屈折率変化として外部に読み出
すものであった。A conventional liquid crystal light valve recording method using the photoconductive effect is disclosed in JP-A-59-216126 and SID'79 Tgest p.22 (1971).
As disclosed in 9), the impedance change of the photoconductor due to light irradiation is used to change the voltage applied to the liquid crystal layer, and the alignment change of the liquid crystal is read out as a refractive index change.
また、スメクチックＡ液晶を用いた液晶ライトバルブ
はテレビジョン学会技術報告OPT191（昭59）に開示され
ているようにレーザーの熱による相変化を利用して画像
を書き込むものであった。Further, a liquid crystal light valve using a smectic A liquid crystal is one which writes an image by utilizing a phase change due to heat of a laser as disclosed in Technical Report OPT191 (Showa 59) of the Television Society.
しかるに従来技術では、画像の読み出しに偏光を必要
とし読み出し光の利用効率が低下する。また安定な画像
保持特性が得られにくいという問題を有している。However, in the conventional technique, polarization is required for reading an image, and the utilization efficiency of the reading light is reduced. Further, there is a problem that it is difficult to obtain stable image holding characteristics.
またスメクチックＡ液晶の熱書き込み型の液晶ライト
バルブは、書き込み、消去の応答性が悪い欠点があっ
た。Further, the smectic A liquid crystal thermowriting liquid crystal light valve has a drawback that the response of writing and erasing is poor.
そこで本発明はこのような問題点を解決するもので、
その目的は読み出し光の利用効率が高く、書き込み速
度、消去速度に優れた液晶ライトバルブの記録方法を提
供するところにある。Therefore, the present invention solves such a problem,
It is an object of the present invention to provide a recording method of a liquid crystal light valve, which has high utilization efficiency of read light and is excellent in writing speed and erasing speed.
本発明の光書き込み型液晶ライトバルブの記録方法
は、対向する基板内面に電極を有する一対の基板間に添
加物を含むＰ型スメクチック液晶層と光導電体層とを挟
持した光書き込み型液晶ライトバルブの記録方法におい
て、 前記液晶層の液晶分子を再配列させ前記液晶ライトバ
ルブを透明状態にする消去電圧を印加してなり、 前記液晶層を散乱状態とするため書き込み電圧を前記
電極間に印加するとともに前記光導電体層に光照射して
なり、 書き込まれた情報を保持するため保持電圧を前記電極
間に印加することを特徴とする。The recording method of the photo-writing type liquid crystal light valve according to the present invention is a photo-writing type liquid crystal light in which a P-type smectic liquid crystal layer containing an additive and a photoconductor layer are sandwiched between a pair of substrates having electrodes on the inner surfaces of the opposing substrates. In the bulb recording method, an erase voltage is applied to rearrange liquid crystal molecules of the liquid crystal layer to bring the liquid crystal light valve into a transparent state, and a write voltage is applied between the electrodes to bring the liquid crystal layer into a scattered state. In addition, the photoconductor layer is irradiated with light, and a holding voltage is applied between the electrodes to hold the written information.
また、本発明の第２の光書き込み型液晶ライトバルブ
の記録方法は、前記書き込み電圧は、表示する階調情報
に対応し変調されていることを特徴とする。The second optical writing liquid crystal light valve recording method of the present invention is characterized in that the writing voltage is modulated corresponding to gradation information to be displayed.
また、本発明の第３の光書き込み型液晶ライトバルブ
の記録方法は、前記消去電圧印加時に部分的な光照射を
行い、部分的消去を行うことを特徴とする。Further, a third method for recording a liquid crystal light valve of a photo-writing type according to the present invention is characterized in that a partial light irradiation is carried out when the erasing voltage is applied to carry out a partial erasing.
本発明の記録方法は、光導電体の光照射時のインピー
ダンスの変化によりＰ型スメクチックＡ液晶層にかかる
分圧を光制御し、Ｐ型スエクチックＡ液晶を、透明な整
列状態から動的散乱を生じさせ、透明な状態中に、散乱
状態を光で、書き込むものである。この、一連の動作を
第２図（ａ）、（ｂ）、（ｃ）によって説明する。第２
図（ａ）はパネル全面を電界誘起再配列を行ない透明化
した状態である。201は液晶分子である。誘電異方性が
正であるＰ型スメクチック液晶には電界方向に揃う方向
のトルクが働く。このトルクが液晶の弾性力を超えると
再配列が生じる。一般的な値で数MV/m程である。またこ
の時印加する電圧は、動的散乱が生じない周波数（例え
ば数KHz、イオンが追随しない、Ｐ型スメクチック液晶
の誘電異方性が正である周波数）の電圧である。The recording method of the present invention optically controls the partial pressure applied to the P-type smectic A liquid crystal layer by changing the impedance of the photoconductor upon irradiation with light, and causes the P-type smectic A liquid crystal to undergo dynamic scattering from a transparent alignment state. It is intended to create and scatter the light into the transparent state while writing. This series of operations will be described with reference to FIGS. 2 (a), (b) and (c). Second
FIG. 3A shows a state in which the entire surface of the panel is made transparent by electric field induced rearrangement. 201 is a liquid crystal molecule. Torque in the direction aligned with the electric field direction acts on the P-type smectic liquid crystal having a positive dielectric anisotropy. When this torque exceeds the elastic force of the liquid crystal, rearrangement occurs. A typical value is several MV / m. The voltage applied at this time is a voltage of a frequency at which dynamic scattering does not occur (for example, several KHz, a frequency at which ions do not follow and the dielectric anisotropy of the P-type smectic liquid crystal is positive).
次に光による書き込み動作に移行する。第２図（ｂ）
は書き込み光108により動的散乱を生じさせた状態を示
す。光照射を受けた、領域203は、光導電体層101の、イ
ンピーダンスが低下し、液晶層の分圧が増加する。この
電圧によって液晶中に添加されたイオンが走行し、電界
誘起再配列をしたスメクチック液晶の配向が乱される。
この現象はスメクチック液晶の動的散乱として公知であ
る。一方、光照射を受けていない領域202は整列したま
まである。こうして光照射領域が散乱、周辺が透明であ
る表示が、完成する。その後、ライトバルブへの印加電
圧を０にしてもスメクチック液晶の強い弾性力のため表
示状態は保持される。（第２図（ｃ））これが、保持期
間であり、適宜設けられる。Next, the writing operation by light is started. Fig. 2 (b)
Indicates a state in which the writing light 108 causes dynamic scattering. In the region 203 which has been irradiated with light, the impedance of the photoconductor layer 101 is lowered and the partial pressure of the liquid crystal layer is increased. This voltage causes the ions added in the liquid crystal to travel, disturbing the orientation of the smectic liquid crystal that has undergone the electric field induced rearrangement.
This phenomenon is known as dynamic scattering of smectic liquid crystals. On the other hand, the regions 202 that have not been exposed to light remain aligned. Thus, a display in which the light irradiation area is scattered and the periphery is transparent is completed. After that, even if the voltage applied to the light valve is set to 0, the display state is maintained due to the strong elastic force of the smectic liquid crystal. (FIG. 2 (c)) This is the holding period, which is appropriately set.
また光書き込み時の駆動電圧を中間調に対応した変調
を与えることにより、散乱の強弱を制御し階調表示が可
能となる。In addition, by applying a modulation corresponding to a halftone to the drive voltage at the time of optical writing, it is possible to control the intensity of scattering and perform gradation display.
実施例１ 第１図は本発明の液晶ライトバルブの断面図である。
透明ガラス基板105上に電圧印加電極である透明電極104
が付設され、片側には光導電体層101、光分離ミラー102
が積層されている。この、２枚の基板はスペーサ106で
封止され、基板間には動的散乱のための添加物を含むＰ
型スメクチックＡ液晶103が挟持されている。また電圧
印加電極間には駆動電圧源107が接続されている。この
駆動電圧源は書き込み光108の情報書き込みのタイミン
グに同期して、消去のための交流電圧、書き込み時電
圧、及び保持電圧を発生する。109は読み出し光であ
る。Embodiment 1 FIG. 1 is a sectional view of a liquid crystal light valve of the present invention.
A transparent electrode 104, which is a voltage application electrode, is formed on a transparent glass substrate 105.
Is attached, and the photoconductor layer 101 and the light separating mirror 102 are provided on one side.
Are stacked. The two substrates are sealed with a spacer 106, and P between the substrates contains an additive for dynamic scattering.
A type smectic A liquid crystal 103 is sandwiched. A drive voltage source 107 is connected between the voltage applying electrodes. The driving voltage source generates an AC voltage for erasing, a writing voltage, and a holding voltage in synchronization with the timing of writing information by the writing light 108. 109 is a reading light.
第１図の液晶ライトバルブのより詳細な構成を表１に
示す。Table 1 shows a more detailed structure of the liquid crystal light valve of FIG.
第３図は本発明の駆動電圧波形を示す、図である。駆
動波形は電界誘起再配列によって透明化する消去期間te
301、光書き込みによって散乱を生じさせる書き込み期
間tw302、また必要に応じ像情報の保持を行なう保持期
間ts303とからなる。各期間の波形の詳細を表２に示
す。 FIG. 3 is a diagram showing a drive voltage waveform of the present invention. The drive waveform becomes transparent by electric field induced rearrangement Erase period t e
301, a writing period t w 302 that causes scattering by optical writing, and a holding period t s 303 that holds image information as necessary. Table 2 shows the details of the waveforms in each period.
液晶層への画像書き込みの動作原理は以下の通りであ
る。初めに全面を透明化する。このため、ドーパントが
追従不可能で、動的散乱が生じない周波数の電圧を光導
電体層、誘電体ミラー、液晶層間に加える。スメクチッ
ク液晶へは分圧された電圧が加わり、電界誘起再配列を
生じ基板に垂直方向に液晶分子が整列する。分圧が不足
する場合には、光照射を補助的に与えてもよい。またVE
（振幅）を下げ、消去のための書き込み光を部分的に照
射し、光導電体層のインピーダンス低下により、光照射
部分の電界誘起再配列を生じさせた部分的消去も可能で
ある。 The operation principle of image writing on the liquid crystal layer is as follows. First, make the entire surface transparent. Therefore, a voltage having a frequency at which the dopant cannot follow and dynamic scattering does not occur is applied between the photoconductor layer, the dielectric mirror, and the liquid crystal layer. A partial voltage is applied to the smectic liquid crystal to cause electric field-induced rearrangement, and liquid crystal molecules are aligned in a direction perpendicular to the substrate. When the partial pressure is insufficient, light irradiation may be supplementarily applied. See also V E
It is also possible to perform partial erasing by lowering (amplitude), irradiating writing light for erasing partially, and lowering the impedance of the photoconductor layer to cause electric field-induced rearrangement of the light-irradiated portion.
次に書き込み動作に移る。表に示すように動的散乱を
生じる比較的低い周波数の電圧が全体に与える。書き込
み光が照射された領域は、光導電体のインピーダンスが
低下し、液晶層の分圧が上昇する。液晶層の分圧が動的
散乱の閾値電圧を超えるように設定すると、光照射領域
が散乱を、生じる。このようにして画像が形成される。Next, the write operation is started. As shown in the table, a relatively low frequency voltage that causes dynamic scattering is applied to the whole. In the area irradiated with the writing light, the impedance of the photoconductor decreases and the partial pressure of the liquid crystal layer increases. When the partial pressure of the liquid crystal layer is set to exceed the threshold voltage for dynamic scattering, the light irradiation area causes scattering. An image is formed in this way.
次に保持期間に移行する。保持期間は第３図の場合OV
としたが、散乱を生じない電圧であれば印加可能であ
る。また、時間tSも任意に設定可能である。Next, the holding period starts. The holding period is OV in the case of Fig. 3.
However, any voltage that does not cause scattering can be applied. Also, the time t S can be set arbitrarily.
光による書き込み手段は、光導電体の感度、書き込み
光強度、照射時間によって種々のものが応用できる。本
実施例の場合、He−Neレーザー光を光導電体層上に絞り
Ｘ−Ｙスキャンして得ている。画像の形成は、このレー
ザー光を変調し書き込み期間中に画像をスキャンして行
なった。もうひとつの画像形成法は、光ビームスキャン
は無変調で平面スキャンし、第４図に示すようにVW305
を変調する。VWの変調法は第４図のような振幅変調の他
に、散乱から透明化に移行の８時間を制御するパルス幅
変調を行なってもよい。Various light writing means can be applied depending on the sensitivity of the photoconductor, the writing light intensity, and the irradiation time. In the case of this embodiment, the He—Ne laser light is obtained by squeezing the photoconductor layer with an XY scan. The image was formed by modulating the laser light and scanning the image during the writing period. Another image forming method, the light beam scans a plane scanned with unmodulated, V as shown in FIG. 4 W 305
To modulate. As the V W modulation method, in addition to the amplitude modulation as shown in FIG. 4, pulse width modulation for controlling 8 hours from transition from scattering to clearing may be performed.
このように光導電体のインピーダンス変化を利用し、
スメクチックＡ液晶に動的散乱を生じさせるのに必要な
書き込み光エネルギーは、従来の熱書き込み型の数J/cm
2に比べ格段に低く、高速光書き込み、低エネルギー光
源の使用を可能とするものである。In this way, utilizing the impedance change of the photoconductor,
The writing light energy required to generate dynamic scattering in the smectic A liquid crystal is several J / cm of the conventional thermal writing type.
It is much lower than 2 and enables high-speed optical writing and the use of low-energy light sources.
実施例２ 液晶層中に２色性色素を添加し、散乱状態では読み出
し光を吸収し、透明なホメオトロピフク状態では読み出
し光を透過する表示モードに変換することができる。第
５図は２色性色素添加した本発明の液晶ライトバルブの
断面図である。構成は第１図とほぽ同様である。表３に
使用した液晶層の内容を記した。Example 2 A dichroic dye can be added to the liquid crystal layer to convert into a display mode in which the reading light is absorbed in the scattering state and the reading light is transmitted in the transparent homeotropic state. FIG. 5 is a sectional view of a liquid crystal light valve of the present invention to which a dichroic dye is added. The structure is similar to that of FIG. Table 3 shows the contents of the liquid crystal layer used.
動作は上述したように書き込み光108に対応した部分5
01の動的散乱である。異なるのは液晶分子201の配列に
従い、二色性色素分子502も再配列を行ない、二色性色
素の整列状態と乱状態によって読み出し光109の吸収を
変化させている点である。二色性色素が第５図のように
読み出し光入射方向に沿って配列すると光はほとんど吸
収を受けない。これに対し乱状態では、液晶層の屈折率
の乱れと相乗し、読み出し光を強く吸収する。 The operation is performed by the portion 5 corresponding to the writing light 108 as described above.
This is 01 dynamic scattering. The difference is that the dichroic dye molecules 502 are also rearranged according to the arrangement of the liquid crystal molecules 201, and the absorption of the readout light 109 is changed depending on the alignment state and disorder state of the dichroic dyes. When the dichroic dyes are arranged along the reading light incident direction as shown in FIG. 5, light is hardly absorbed. On the other hand, in the disordered state, it synergizes with the disorder of the refractive index of the liquid crystal layer and strongly absorbs the readout light.
記録方法は実施例１と同様に行なられる。このように
光吸収の強弱によって像の書き込みを行なうことができ
た。The recording method is the same as in the first embodiment. In this way, an image could be written depending on the strength of light absorption.
また読み出し光の波長を２色性色素の吸収波長に合わ
せることにより構成中の光分離ミラー102を除外もしく
は半透過性にすることができる。これは光分離ミラーの
目的が、読み出し光による光導電体層の反応を抑制する
ことであり、この光抑制の作用を２色性色素の光吸収で
置換、もしくは補完させることに他ならない。Further, by adjusting the wavelength of the reading light to the absorption wavelength of the dichroic dye, the light separation mirror 102 in the configuration can be excluded or made semi-transmissive. This is because the purpose of the light separating mirror is to suppress the reaction of the photoconductor layer due to the reading light, and this light suppressing action is nothing but replacing or complementing the light absorption of the dichroic dye.
以上述べたように本発明によれば、Ｐ型スメクチック
液晶の動的散乱、及び電界誘起再配列効果、及びその効
果を発生する駆動波形を与えることにより、低エネルギ
ー光書き込みが可能となり、書き込みの高速化、低パワ
ー光源の使用ができるようになった。更に、散乱状態と
透明状態とのスイッチングによる像形成ができることか
ら高い読み出し光利用率を得るものである。更に、部分
的な消去が可能である液晶ライトバルブ装置を提供する
ことができる。As described above, according to the present invention, low-energy optical writing becomes possible by providing dynamic scattering of P-type smectic liquid crystal and electric field induced rearrangement effect, and a driving waveform that produces the effect. It has become possible to use high-speed, low-power light sources. Furthermore, since the image formation can be performed by switching between the scattering state and the transparent state, a high reading light utilization rate is obtained. Furthermore, it is possible to provide a liquid crystal light valve device that can be partially erased.
第１図は本発明による液晶ライトバルブの断面図。 第２図（ａ）（ｂ）（ｃ）は動作を示す断面図である。
第２図（ａ）は、動的散乱を誘起した状態。第２図、
（ｂ）は、光書き込み状態。第２図（ｃ）は保持状態を
示す。 第３図は本発明による駆動波形例を示す図。 第４図は振幅変調を加えた、駆動波形例を示す図。 第５図は２色性色素を含有した液晶ライトバルブの断面
図である。 101……光導電体層 102……光分離ミラー 103……液晶層 104……電圧印加電極 105……透明基板 107……駆動電圧源 108……書き込み光 109……読み出し光 201……スメクチック液晶分子 301……消去電圧印加期間 302……書き込み期間 303……保持期間 305……書き込み時電圧振幅 502……２色性色素分子FIG. 1 is a sectional view of a liquid crystal light valve according to the present invention. 2 (a), (b) and (c) are sectional views showing the operation.
FIG. 2A shows a state in which dynamic scattering is induced. Figure 2,
(B) is an optical writing state. FIG. 2 (c) shows the holding state. FIG. 3 is a diagram showing an example of drive waveforms according to the present invention. FIG. 4 is a diagram showing an example of a drive waveform to which amplitude modulation is added. FIG. 5 is a sectional view of a liquid crystal light valve containing a dichroic dye. 101 …… photoconductor layer 102 …… light separation mirror 103 …… liquid crystal layer 104 …… voltage application electrode 105 …… transparent substrate 107 …… driving voltage source 108 …… writing light 109 …… reading light 201 …… smectic liquid crystal Molecule 301 …… Erase voltage application period 302 …… Writing period 303 …… Holding period 305 …… Writing voltage amplitude 502 …… Dichroic dye molecule
Claims (3)
板間に添加物を含むＰ型スメクチック液晶層と光導電体
層とを挟持した光書き込み型液晶ライトバルブの記録方
法において、 前記液晶層の液晶分子を再配列させ前記液晶ライトバル
ブを透明状態にする消去電圧を印加してなり、 前記液晶層を散乱状態とするため書き込み電圧を前記電
極間に印加するとともに前記光導電体層に光照射してな
り、 書き込まれた情報を保持するため保持電圧を前記電極間
に印加することを特徴とする光書き込み型液晶ライトバ
ルブの記録方法。1. A recording method of a photo-writing type liquid crystal light valve, wherein a P-type smectic liquid crystal layer containing an additive and a photoconductor layer are sandwiched between a pair of substrates each having an electrode on the inner surface of the opposing substrate. An erasing voltage is applied to rearrange the liquid crystal molecules in the liquid crystal light valve to make the liquid crystal light valve in a transparent state, and a write voltage is applied between the electrodes to make the liquid crystal layer in a scattering state, and light is applied to the photoconductor layer. A recording method for a photo-writing type liquid crystal light valve, characterized in that a holding voltage is applied between the electrodes so as to hold written information after the irradiation.
応し変調されていることを特徴とする特許請求の範囲第
１項記載の光書き込み型液晶ライトバルブの記録方法。2. The recording method of an optically writable liquid crystal light valve according to claim 1, wherein the writing voltage is modulated corresponding to gradation information to be displayed.
い、部分的消去を行うことを特徴とする特許請求の範囲
第１項記載の光書き込み型液晶ライトバルブの記録方
法。3. A recording method for an optically writable liquid crystal light valve according to claim 1, wherein partial light irradiation is performed when the erase voltage is applied to partially erase the light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62211907A JP2537635B2 (en) | 1987-08-26 | 1987-08-26 | Recording method of optical writing type liquid crystal light valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62211907A JP2537635B2 (en) | 1987-08-26 | 1987-08-26 | Recording method of optical writing type liquid crystal light valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6455522A JPS6455522A (en) | 1989-03-02 |
| JP2537635B2 true JP2537635B2 (en) | 1996-09-25 |
Family
ID=16613627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62211907A Expired - Lifetime JP2537635B2 (en) | 1987-08-26 | 1987-08-26 | Recording method of optical writing type liquid crystal light valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2537635B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3551702B2 (en) * | 1997-05-08 | 2004-08-11 | カシオ計算機株式会社 | Liquid crystal display device and driving method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54134657A (en) * | 1978-04-11 | 1979-10-19 | Nec Corp | Light bulb device of projection type light writing liquid crystal and driving method thereof |
| JPS6289929A (en) * | 1985-10-16 | 1987-04-24 | Canon Inc | Method and device for optical recording |
-
1987
- 1987-08-26 JP JP62211907A patent/JP2537635B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6455522A (en) | 1989-03-02 |
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