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1. 发明申请

WO1988007701A1 LIGHT VALVE SYSTEM AND METHOD WITH PULSED READOUT 审中-公开
标题翻译：具有脉冲读数的光阀系统和方法
公开(公告)号：WO1988007701A1
公开(公告)日：1988-10-06
申请号：PCT/US1988000471
申请日：1988-02-16
申请人： HUGHES AIRCRAFT COMPANY
发明人： HUGHES AIRCRAFT COMPANY , LITTLE, Michael, J. , EFRON, Uzi , BRAATZ, Paul, O. , SCHWARTZ, Robert, N. , OWECHKO, Yuri , WELKOWSKY, Murray, S.
IPC分类号： G02F01/135
CPC分类号： G02F1/133348 , G02F1/135
摘要： A pulsed readout technique is described for liquid crystal light valves which eliminates the problem of readout beam leakage through the light valve mirror. The readout beam is pulsed on only when the light valve's semiconductor layer is out of a depletion state. This can occur during an accumulation state or, in certain applications, during a specially inserted quiescent period in the light valve voltage cycle. The invention is applicable to light valves with various types of modulating inputs, and can be used with either dielectric or metal matrix mirrors.

2. 发明申请

WO1989001174A1 SILICON-ON-SAPPHIRE LIQUID CRYSTAL LIGHT VALVE AND METHOD 审中-公开
标题翻译： SILICON-ON-SAPPHIRE液晶水晶灯和方法
公开(公告)号：WO1989001174A1
公开(公告)日：1989-02-09
申请号：PCT/US1988002034
申请日：1988-06-16
申请人： HUGHES AIRCRAFT COMPANY
发明人： HUGHES AIRCRAFT COMPANY , EFRON, Uzi , BRAATZ, Paul, O. , VASUDEV, Prahalad, K. , ROBERTSON, Glenn, D.
IPC分类号： G02F01/135
CPC分类号： G02F1/1354
摘要： An LCLV is formed with a sapphire substrate (20) base, a highly doped, thin silicon epitaxial layer (2) forming an ohmic back contact on a smooth surface of the sapphire substrate, and a lightly doped, high resistivity silicon epitaxial layer (4) in the range of about 20-60 microns thick on the back contact. The use of a sapphire substrate provides a better surface quality and higher resolution than previously available with the semiconductor substrates. Lattice defects in the thin back contact are reduced by the formation of a buried amorphous layer adjacent the sapphire substrate, and subsequent recrystallization thereof using the unamorphized portions of the back contact as recrystallization seeds. The application of the invention to both MOS and Schottky diode LCLVs is discussed.

3. 发明申请

WO1987000643A1 REFLECTIVE MATRIX MIRROR VISIBLE TO INFRARED CONVERTER LIGHT VALVE 审中-公开
标题翻译：反射矩阵镜可见红外转换灯
公开(公告)号：WO1987000643A1
公开(公告)日：1987-01-29
申请号：PCT/US1986001446
申请日：1986-07-14
申请人： HUGHES AIRCRAFT COMPANY
发明人： HUGHES AIRCRAFT COMPANY , BRAATZ, Paul, O.
IPC分类号： G02F01/135
CPC分类号： G02F1/133553 , G02F1/135 , G02F2001/1352
摘要： A reflective matrix mirror visible to infrared converter light valve (5) includes a liquid crystal medium (60) for spatially modulating an incident infrared beam by polarization rotation, a photosubstrate (30) for receiving an incident visible wavelength image (115) and for controlling the polarization rotation of the liquid crystal medium (60) responsively to the visible image (115), and a reflective matrix mirror (40). The reflective matrix mirror (40) is positioned between the liquid crystal medium (60) and the photosubstrate (30) and reflects the incident infrared beam (125) back through the liquid crystal medium (60) such that the infrared beam (125) passes through the liquid crystal medium twice and is polarization rotated responsively to the visible wavelength image (115). A polarizer (90) positioned exteriorly of the liquid crystal medium (60) converts the polarization rotation of the infrared beam (125) into output intensity modulation to produce an infrared image (130). The reflective matrix mirror (40) comprises an M x N array of infrared reflective islands comprising metallic or semiconductor/metallic compounds.
摘要翻译：对红外线转换器光阀（5）可见的反射矩阵镜包括用于通过偏振旋转对入射的红外光束进行空间调制的液晶介质（60），用于接收入射可见波长图像（115）并用于控制响应于可见图像（115）的液晶介质（60）的偏振旋转，以及反射矩阵反射镜（40）。反射矩阵反射镜（40）位于液晶介质（60）和照射基板（30）之间，并将入射的红外光束（125）反射回液晶介质（60），以使红外光束（125）通过通过液晶介质两次，并且响应于可见波长图像（115）偏振旋转。位于液晶介质（60）外部的偏振器（90）将红外光束（125）的偏振旋转转换为输出强度调制以产生红外图像（130）。反射矩阵反射镜（40）包括包含金属或半导体/金属化合物的红外反射岛的M×N阵列。

4. 发明申请

WO1987000642A1 DOUBLE-SCHOTTKY DIODE LIQUID CRYSTAL LIGHT VALVE 审中-公开
标题翻译：双肖特基二极管液晶灯
公开(公告)号：WO1987000642A1
公开(公告)日：1987-01-29
申请号：PCT/US1986001394
申请日：1986-07-03
申请人： HUGHES AIRCRAFT COMPANY
发明人： HUGHES AIRCRAFT COMPANY , BRAATZ, Paul, O. , EFRON, Uzi
IPC分类号： G02F01/135
CPC分类号： G02F1/1354
摘要： A double Schottky diode light valve (5) includes a liquid crystal (80) for locally modulating a beam (120) by polarization rotation to produce a modulated beam (121), and a photoconductor (40) located adjacent the liquid crystal (80) for receiving and absorbing a second beam (110). The photoconductor (40) controls the polarization responsively to the optical content of the second beam (110). The photoconductor (40) includes a semiconductor substrate and a pair of Schottky diodes (60/40, 30/40) disposed on opposing sides of the substrate. The absorption of the second beam (110) by the substrate (40) produces photogenerated majority carriers. The pair of Schottky diodes (60/40, 30/40) maintains the substrate (40) substantially depleted of such carriers and also reflects the modulated beam back through the liquid crystal.

5. 发明申请

WO1989002613A1 SINGLE-SCHOTTKY DIODE LIQUID CRYSTAL LIGHT VALVE AND METHOD 审中-公开
标题翻译：单肖特基二极管液晶灯和方法
公开(公告)号：WO1989002613A1
公开(公告)日：1989-03-23
申请号：PCT/US1988003100
申请日：1988-08-30
申请人： HUGHES AIRCRAFT COMPANY
发明人： HUGHES AIRCRAFT COMPANY , EFRON, Uzi , BRAATZ, Paul, O. , GRINBERG, Jan
IPC分类号： G02F01/135
CPC分类号： G02F1/1354
摘要： A single-Schottky liquid crystal is disclosed in which a series of Schottky contacts are made on one side of a photoconductor substrate by a metal matrix mirror, with a doped semiconductor back contact electrode on the other side of the substrate. The light valve offers several operational advantages over MOS devices, and is easier to fabricate than double-Schottky light valves. It can be operated either in an AC mode or, by doping the liquid crystal ions, in a DC mode.
摘要翻译：公开了一种单肖特基液晶，其中通过金属矩阵反射镜在感光体基板的一侧上形成一系列肖特基接触，在基板的另一侧上具有掺杂的半导体背接触电极。光阀比MOS器件提供了几个操作优势，比双肖特基光阀更容易制造。它可以在AC模式下或通过在DC模式下掺杂液晶离子来操作。

6. 发明公开

EP0309574A1 LIGHT VALVE SYSTEM AND METHOD WITH PULSED READOUT 失效
标题翻译：光阀的装置和方法脉冲模式阅读。
公开(公告)号：EP0309574A1
公开(公告)日：1989-04-05
申请号：EP88904721.0
申请日：1988-02-16
申请人： Hughes Aircraft Company
发明人： LITTLE, Michael, J. , EFRON, Uzi , BRAATZ, Paul, O. , SCHWARTZ, Robert, N. , OWECHKO, Yuri , WELKOWSKY, Murray, S.
IPC分类号： G02F1 , G09G3
CPC分类号： G02F1/133348 , G02F1/135
摘要： Technique d'affichage pulsé pour valves de lumière à cristaux liquides, permettant d'éliminer le problème des fuites du faisceau d'affichage à travers le miroir de la valve de lumière. Le faisceau d'affichage est pulsé uniquement lorsque la couche semi-conductrice de la valve de lumière ne se trouve pas dans un état d'appauvrissement, ce qui se produit pendant un état d'accumulation ou, dans certaines applications, pendant une période de quiescence introduite spécialement dans le cycle de tension de la valve de lumière. L'invention s'applique à des valves de lumière présentant différents types d'entrées de modulation, et peut être utilisée avec des miroirs à matrice soit diélectrique soit métallique.

7. 发明公开

EP0331724A1 SINGLE-SCHOTTKY DIODE LIQUID CRYSTAL LIGHT VALVE AND METHOD 失效
标题翻译：采用单肖特基二极管和方式的液晶REPORT阀。
公开(公告)号：EP0331724A1
公开(公告)日：1989-09-13
申请号：EP88909160.0
申请日：1988-08-30
申请人： Hughes Aircraft Company
发明人： EFRON, Uzi , BRAATZ, Paul, O. , GRINBERG, Jan
IPC分类号： G02F1
CPC分类号： G02F1/1354
摘要： A single-Schottky liquid crystal is dis closed in which a series of Schottky contacts are made on one side of a photoconductor substrate by a metal matrix mirror, with a doped semiconductor back contact electrode on the other side of the substrate. The light valve offers several operational advantages over MOS devices, and is easier to fabricate than double-Schottky light valves. It can be operated either in an AC mode or, by doping the liquid crystal ions, in a DC mode.

8. 发明授权

EP0233217B1 DOUBLE-SCHOTTKY DIODE LIQUID CRYSTAL LIGHT VALVE 失效
标题翻译：双肖特基二极管液晶灯
公开(公告)号：EP0233217B1
公开(公告)日：1991-04-24
申请号：EP86904604.5
申请日：1986-07-03
申请人： Hughes Aircraft Company
发明人： BRAATZ, Paul, O. , EFRON, Uzi
IPC分类号： G02F1/135
CPC分类号： G02F1/1354
摘要： A double Schottky diode light valve (5) includes a liquid crystal (80) for locally modulating a beam (120) by polarization rotation to produce a modulated beam (121), and a photoconductor (40) located adjacent the liquid crystal (80) for receiving and absorbing a second beam (110). The photoconductor (40) controls the polarization responsively to the optical content of the second beam (110). The photoconductor (40) includes a semiconductor substrate and a pair of Schottky diodes (60/40, 30/40) disposed on opposing sides of the substrate. The absorption of the second beam (110) by the substrate (40) produces photogenerated majority carriers. The pair of Schottky diodes (60/40, 30/40) maintains the substrate (40) substantially depleted of such carriers and also reflects the modulated beam back through the liquid crystal.

9. 发明公开

EP0324836A1 SILICON-ON-SAPPHIRE LIQUID CRYSTAL LIGHT VALVE AND METHOD 失效
标题翻译：蓝宝石上硅液晶光阀和方法。
公开(公告)号：EP0324836A1
公开(公告)日：1989-07-26
申请号：EP88906606.0
申请日：1988-06-16
申请人： HUGHES AIRCRAFT COMPANY
发明人： EFRON, Uzi , BRAATZ, Paul, O. , VASUDEV, Prahalad, K. , ROBERTSON, Glenn, D.
IPC分类号： G02F1
CPC分类号： G02F1/1354
摘要： An LCLV is formed with a sapphire substrate (20) base, a highly doped, thin silicon epitaxial layer(2) forming an ohmic back contact on a smooth surface of the sapphire substrate, and a lightly doped, high resistivity silicon epitaxial lay er (4) in the range of about 20-60 microns thick on the back contact. The use of a sapphire substrate provides a better sur face quality and higher resolution than previously available with the semiconductor substrate. Lattice defects in the thin back contact are reduced by the formation of a buried amorphous layer adjacent the sapphire substrate and subsequent recrystallization thereof using the unamorphized portions of the back contact as recrystallization seeds. The application of the invention to both MOS and Schottky diode LCLVs is discussed.

10. 发明公开

EP0233217A1 DOUBLE-SCHOTTKY DIODE LIQUID CRYSTAL LIGHT VALVE 失效
标题翻译：用双肖特基二极管液晶REPORT阀。
公开(公告)号：EP0233217A1
公开(公告)日：1987-08-26
申请号：EP86904604.0
申请日：1986-07-03
申请人： Hughes Aircraft Company
发明人： BRAATZ, Paul, O. , EFRON, Uzi
IPC分类号： G02F1 , H01L31
CPC分类号： G02F1/1354
摘要： Un relais optique (5) à deux diodes Schottky comporte un cristal liquide (80) permettant de moduler localement un faisceau (120) par rotation de la polarisation afin de produire un faisceau modulé (121), et un photo-conducteur (40) adjacent au cristal liquide (80) et permettant de recevoir et d'absorber un second faisceau (110). Le photo-conducteur (40) commande la polarisation par réaction au contenu optique du second faisceau (110). Le photo-conducteur (40) comprend un substrat à semi-conducteurs et une paire de diodes Schottky (60/40, 30/40) disposées sur les côtés opposés du substrat. L'absorption du second faisceau (110) par le substrat (40) produit des porteurs majoritaires générés par la lumière. La paire de diodes Schottky (60/40, 30/40) assure l'appauvrissement substantiel du substrat en de tels porteurs et réfléchit également le faisceau modulé à travers le cristal liquide.

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