-
公开(公告)号：US5010251A
公开(公告)日：1991-04-23
申请号：US463563
申请日：1990-01-11
摘要： An infrared (IR) simulator is disclosed in which an array of pixels is defined on an insulative substrate by resistor bridges which contact the substrate at spaced locations and are separated from the substrate, and thereby thermally insulated therefrom, between the contact locations. Semiconductor drive circuits on the substrate enable desired current flows through the resistor bridges in response to input control signals, thereby establishing the appropriate IR radiation from each of the pixels. The drive circuits and also at least some of the electrical lead lines are preferably located under the resistor bridges. A thermal reflector below each bridge shields the drive circuit and reflects radiation to enhance the IR output. The drive circuits employ sample and hold circuits which produce a substantially flicker-free operation, with the resistor bridges being impedance matched with their respective drive circuits. The resistor bridges may be formed by coating insulative base bridges with a resistive layer having the desired properties, and overcoating the resistive layers with a thermally emissive material. The array is preferably formed on a silicon-on-sapphire (SOS) wafer. Arrays of electromagnetic radiation bridge detectors may also be formed, with the bridges having either resistor, thermocouple or Schottky junction constructions.
摘要翻译： 公开了一种红外（IR）模拟器，其中像素阵列通过电阻器桥限定在绝缘衬底上，电阻器桥在间隔开的位置处接触衬底，并且在接触位置之间与衬底分离，从而与衬底隔离。 衬底上的半导体驱动电路响应于输入控制信号使期望的电流流过电阻器桥，从而从每个像素建立适当的红外辐射。 驱动电路以及至少一些电引线优选位于电阻桥下。 每个桥下的热反射器屏蔽驱动电路并反射辐射以增强IR输出。 驱动电路采用产生基本上无闪烁操作的采样和保持电路，其中电阻器桥与它们各自的驱动电路阻抗匹配。 可以通过用具有期望特性的电阻层涂覆绝缘基桥来形成电阻器桥，并用热发射材料覆盖电阻层。 阵列优选形成在蓝宝石（SOS）硅晶片上。 也可以形成电磁辐射桥接检测器阵列，其中桥具有电阻器，热电偶或肖特基结结构。
-
公开(公告)号：US5389788A
公开(公告)日：1995-02-14
申请号：US166790
申请日：1993-12-13
申请人： Jan Grinberg , Raymond Balcerak , Chiung-Sheng Wu , Uzi Efron , Paul O. Braatz
发明人： Jan Grinberg , Raymond Balcerak , Chiung-Sheng Wu , Uzi Efron , Paul O. Braatz
IPC分类号： G01J5/04 , G01J5/20 , G02F1/135 , H01L27/146 , G02F1/136
CPC分类号： H01L27/146 , G02B23/125 , G02F1/1354 , H04N5/3651 , H04N5/33
摘要： An infrared (IR) radiation transducer integrates an IR detector array with a liquid crystal (LC) readout. The IR detector is preferably a pixelized bolometer array, but other detectors such as pyroelectric materials are possible. To modulate the LC in response to detected IR radiation, a modulating section is provided that includes a charge injection structure which injects electrical charge in response to the detected IR radiation, and a charge transfer structure that transfers the injected charge to the LC readout section. During its active phase the charge transfer layer is depleted of majority charge carriers, and the charge injection and transfer mechanism operates in a manner analogous to a bipolar transistor. A visible readout is obtained by directing readout light through the LC, where it is modulated in accordance with the detected IR image. The transducers are small and light weight enough to be incorporated into a pair of goggles, for which no separate cooling is required.
摘要翻译： 红外（IR）辐射传感器将IR检测器阵列与液晶（LC）读数器集成。 IR检测器优选地是像素化的测辐射热计阵列，但是其他检测器如热电材料也是可能的。 为了响应于检测到的IR辐射来调制LC，提供了调制部分，其包括响应于检测到的IR辐射而注入电荷的电荷注入结构，以及将注入的电荷传送到LC读出部分的电荷转移结构。 在其活性阶段期间，电荷转移层耗尽多数电荷载流子，并且电荷注入和转移机制以类似于双极晶体管的方式工作。 通过将读出光引导通过LC获得可见读出，其中根据检测到的IR图像进行调制。 传感器体积小巧，重量轻，可以并入一副护目镜，不需要单独的冷却。
-
公开(公告)号：US4807976A
公开(公告)日：1989-02-28
申请号：US33319
申请日：1987-04-01
申请人： Michael J. Little , Uzi Efron , Paul O. Braatz , Robert N. Schwartz , Yuri Owechko , Murray S. Welkowsky
发明人： Michael J. Little , Uzi Efron , Paul O. Braatz , Robert N. Schwartz , Yuri Owechko , Murray S. Welkowsky
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.
摘要翻译： 对于液晶光阀描述了脉冲读出技术，其消除了通过光阀镜的读出光束泄漏的问题。 只有当光阀的半导体层处于耗尽状态时，读出光束才被脉冲。 这可能在累积状态期间或在某些应用中，在光阀电压循环中的特别插入的静止期间发生。 本发明适用于具有各种调制输入的光阀，可用于电介质或金属矩阵镜。
-
4.发明授权LCLV having photoconductive pedestals each having a cross-sectional area no greater than 5 percent of the area of its respective reflective pad 失效具有感光基座的LCLV各自具有不大于其相应反射板的面积的5％的横截面积
公开(公告)号：US5612800A
公开(公告)日：1997-03-18
申请号：US333533
申请日：1994-11-02
申请人： Paul O. Braatz , Chiung-Sheng Wu
发明人： Paul O. Braatz , Chiung-Sheng Wu
IPC分类号： G02B26/08 , G02F1/1335 , G02F1/1343 , G02F1/135 , H04N5/74
CPC分类号： G02F1/1354 , G02F1/133526
摘要： A liquid crystal light valve is provided with an array of photoconductive pedestals surrounded by a dielectric matrix material. Metal mirror pads are formed on top of each pedestal to form a high resolution metal matrix mirror, with each pedestal/mirror combination servicing one image pixel. The dielectric matrix forms a potential barrier between the individual photoconductive pedestals which prevents lateral charge migration between pedestals. The metal matrix mirror also shields the underlying photoconductive pedestal from photoactivation by the readout beam. The dielectric matrix material has a lower dielectric constant than the photoconductive pedestals, allowing the impedance of the photoconductive pedestals to match the impedance of the liquid crystal layer with a much thinner layer of photoconductive material than in prior LCLVs using a continuous photoconductive layer. The thinner photoconductive layer results in higher electric fields which improve the LCLV's response time, photodegradation rate, spatial resolution and spectral response.
摘要翻译： 液晶光阀设置有由电介质基质材料包围的感光基座的阵列。 金属镜垫形成在每个基座的顶部，以形成高分辨率金属矩阵镜，每个基座/镜组合服务于一个图像像素。 电介质矩阵在各个感光基座之间形成一个势垒，防止基座之间的横向电荷迁移。 金属矩阵镜还屏蔽下面的光导基座，使其不受光读出光束的影响。 介质矩阵材料的介电常数低于光导基座，使得光电基座的阻抗与使用连续光电导层的现有LCLV相比，液晶层的阻抗与光电导材料的厚度相比更薄。 较薄的光电导层导致更高的电场，这提高了LCLV的响应时间，光降解速率，空间分辨率和光谱响应。
-
公开(公告)号：US4198647A
公开(公告)日：1980-04-15
申请号：US4107
申请日：1979-01-17
CPC分类号： G02F1/1354
摘要： This invention is directed to a semiconductor structure that includes at least one wafer that is fully depleted of all mobile carriers and is used as a medium for the movement of spatially modulated signal represented by charge carriers through the wafer with a spatial resolution that is smaller than the thickness of the wafer. This may be used in the form of a continuous high resolution silicon photodiode substrate to serve as an image input means for an electro-optical display medium, such as a liquid crystal. Next to the photoactivated substrate is a liquid crystal and next to the crystal is a transparent electrode. The photodiode is reverse biased and both of its sides are depleted of all mobile charges throughout its entire thickness. Thus, charges generated in the substrate move to the display not by diffusion as in prior art devices (e.g. the solid state silicon vidicon) but by the influence of the electric field which tends to minimize their lateral spread and thereby achieves a high spatial resolution in spite of the continuous character of this silicon diode device.
摘要翻译： 本发明涉及一种半导体结构，该半导体结构包括至少一个完全耗尽所有移动载波的晶片，并且用作用于通过晶片以空间分辨率移动由电荷载体表示的空间调制信号的介质，其空间分辨率小于 晶片的厚度。 这可以以连续的高分辨率硅光电二极管基板的形式使用，以用作诸如液晶的电光显示介质的图像输入装置。 在光活化基板的旁边是液晶，并且在晶体旁边是透明电极。 光电二极管是反向偏置的，并且其两侧在整个厚度上都耗尽所有移动电荷。 因此，在现有技术的装置（例如，固态硅摄像机）中，在衬底中产生的电荷不会像扩散一样移动到显示器上，而是通过电场的影响，使得它们的横向扩展趋于最小化，从而实现高空间分辨率 尽管这种硅二极管器件具有连续的特性。
-
公开(公告)号：US4191452A
公开(公告)日：1980-03-04
申请号：US865281
申请日：1977-12-28
IPC分类号： G09G3/18 , G02F1/133 , G02F1/135 , G02F1/136 , G02F1/1362 , G02F1/1365 , G09F9/30 , H01L29/768 , H01L31/14 , H04N5/74
CPC分类号： H01L29/76833 , G02F1/135 , G02F1/136277
摘要： There is disclosed a single crystal silicon charge storage apparatus suitable for use in an alternating current driven liquid crystal light valve having therein a PIN photodiode structure. The charge storage medium is made of a high resistivity substrate on which an MOS capacitor is formed having fast photoelectric transient response an capable of operating over a wide frequency range. A PIN photodiode structure is provided on one side of the substrate next to the MOS capacitor to deplete the substrate of its mobile charge carriers during a portion of the AC cycle and to collect the electric field-guided signal representing charge carriers that are generated or introduced into the substrate by an input mechanism. The signal from the substrate is electrically coupled through high-reflectivity mirrors and light blocking layers to the liquid crystal.
摘要翻译： 公开了一种适用于具有PIN光电二极管结构的交流驱动液晶光阀的单晶硅电荷存储装置。 电荷存储介质由其上形成有能够在宽频率范围内工作的快速光电瞬变响应的MOS电容器的高电阻率衬底制成。 在MOS电容器旁边的基板的一侧设置PIN光电二极管结构，以在AC周期的一部分期间消耗其移动电荷载流子的基板，并且收集表示产生或引入的电荷载流子的电场引导信号 通过输入机构进入基板。 来自基板的信号通过高反射镜和阻光层电耦合到液晶。
-
公开(公告)号：US4443064A
公开(公告)日：1984-04-17
申请号：US214930
申请日：1980-12-10
IPC分类号： G02F1/135 , G02F1/1362 , G02F1/13
CPC分类号： G02F1/1354 , G02F1/136277
摘要： There is disclosed a single crystal silicon charge storage apparatus suitable for use in an alternating current driven liquid crystal light valve having therein a moderately doped microchannel stop grid. The charge storage medium is made of a high resistivity substrate on which an MOS capacitor is formed having fast photoelectric transient response and capable of operating over a wide frequency range. A doped microgrid structure is formed in one side of the substrate to prevent charge carrier spreading at the silicon-silicon dioxide interface and to provide a focusing electric field for the charge carriers. The signal from the substrate is electrically coupled through high-reflectivity mirrors and light blocking layers to the liquid crystal.
摘要翻译： 公开了一种适用于具有适度掺杂的微通道停止栅格的交流驱动液晶光阀的单晶硅电荷存储装置。 电荷存储介质由高电阻率基板制成，其上形成具有快速光电瞬态响应并能够在宽频率范围内工作的MOS电容器。 在衬底的一侧形成掺杂的微电网结构，以防止电荷载体在硅 - 二氧化硅界面处扩散，并为电荷载体提供聚焦电场。 来自基板的信号通过高反射镜和阻光层电耦合到液晶。
-
公开(公告)号：US4191454A
公开(公告)日：1980-03-04
申请号：US949840
申请日：1978-10-10
IPC分类号： G02F1/135 , G02F1/1362 , G02F1/13
CPC分类号： G02F1/136277 , G02F1/1354
摘要： There is disclosed a single crystal silicon charge storage apparatus suitable for use in an alternating current driven liquid crystal light valve. The charge storage medium is made of a high resistivity and photosensitive under AC excitation substrate on which an MOS capacitor is formed having fast photoelectric transient response and capable of operating over a wide frequency range. The AC activation provides to a liquid crystal light valve a greatly improved electrochemical stability. Electrically coupled high-reflectivity mirrors and light blocking layers can be used to couple the liquid crystal to the MOS capacitor.
摘要翻译： 公开了一种适用于交流驱动液晶光阀的单晶硅电荷存储装置。 电荷存储介质由交流激励基板上的高电阻率和感光性构成，其上形成具有快速光电瞬变响应且能够在较宽频率范围内工作的MOS电容器。 AC激活为液晶光阀提供了极大改善的电化学稳定性。 可以使用电耦合的高反射镜和遮光层来将液晶耦合到MOS电容器。
-
公开(公告)号：US4093357A
公开(公告)日：1978-06-06
申请号：US784894
申请日：1977-04-05
CPC分类号： G02F1/135 , G02F1/1533 , G02F2001/1351
摘要： There is disclosed an anisotropically conductive interface comprising a plurality of cermet and dielectric layers for use in electro-optical devices to separate a substrate driver from an electro-optical display medium to prevent display light from affecting the driver. The substrate may be a photosensor, a charge coupled device or other matrix addressing circuitry arrangement. In general the substrate is one which can provide spatially modulated voltage and/or current patterns. The display medium may be a liquid crystal, an electro-chromic, an electro-luminescent material or the like. The interface provides direct current conductivity through the interface, insulative maintenance of the spatial modulation of the signal across the interface, light reflectivity, and high attenuation of transmitted light.
摘要翻译： 公开了一种各向异性导电界面，其包括用于电光装置的多个金属陶瓷和电介质层，以将基板驱动器与电光显示介质分离，以防止显示光影响驱动器。 衬底可以是光电传感器，电荷耦合器件或其他矩阵寻址电路装置。 通常，衬底是可以提供空间调制的电压和/或电流图案的衬底。 显示介质可以是液晶，电致铬，电致发光材料等。 该接口通过接口提供直流电导率，绝缘维持跨越接口的信号的空间调制，光反射率和透射光的高衰减。
-
公开(公告)号：USH840H
公开(公告)日：1990-11-06
申请号：US294611
申请日：1989-01-09
申请人： Uzi Efron , Paul O. Braatz , Jan Grinberg
发明人： Uzi Efron , Paul O. Braatz , Jan Grinberg
IPC分类号： G02F1/135
CPC分类号： G02F1/135
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.
-
-
-
-
-
-
-
-
-
搜索结果
19 条记录 (耗时 0.023 秒)
