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15 May 2001 CMOS-liquid-crystal-based image transceiver device
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Abstract
A CMOS-Liquid Crystal-Based Image Transceiver Device (ITD) is under development at the Holon Institute of Technology. The device combines both functions of imaginary and display in a single array structure. This unique structure allows the combination of see-through, aiming, imaging and the displaying of a superposed image to be combined in a single, compact, head mounted display. The CMOS-based pixel elements are designed to provide image sensor part of the pixel is based on an n-well photodiode and a three-transistors readout circuit. The imaging function is based on a back- illuminated sensor configuration. In order to provide a high imager fill-factor, two pixel configuration are proposed: 1) A p++/p-/p-well silicon structure using twin- well CMOS process; 2) an n-well processed silicon structure with a micro-lens array. The display portion of the IT device is to be fabricate don a silicon-based reflective, active matrix driver, using nematic liquid crystal material. The reflective display pixel electrode is driven by an n-MOS transistor, formed in the corresponding pixel region on the silicon substrate. The timing, sequencing and control of the IT device array are designed in a pipeline array processing scheme. A preliminary prototype system and device design have been performed and the first test device is currently being tested. Details of the device design as well as its smart goggle applications are presented.
© (2001) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Uzi Efron, Isak Davidov, Vladimir Sinelnikov, and Ilya Levin "CMOS-liquid-crystal-based image transceiver device", Proc. SPIE 4306, Sensors and Camera Systems for Scientific, Industrial, and Digital Photography Applications II, (15 May 2001); https://doi.org/10.1117/12.426960
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