A Study of the Application of Reflective Displays to Synthetic Array Radar
Abstract
The purpose of this study was to establish the performance requirements for an airborne synthetic-array-radar (SAR) display and investigate the feasibility of meeting these requirements with a reflective display mechanization. A reflective liquid crystal display was chosen as the baseline mechanization to be evaluated with respect to its operational performance, fabrication feasibility and cost effectiveness. A set of performance requirements were established from psychophysical considerations that would provide for the transfer of the maximum amount of information that can be realistically used in the named application. They are: size, 10 by 10 inches; resolution, 1024 by 1024 pixels; contrast ratio, 64 to 1 under 10,000 ft. C. ambient (13 shades of gray); reflectance, 20 percent of lambertian surface. The baseline liquid crystal display is fabricated by sandwiching a thin layer of liquid crystal material between a transparent planer conductive electrode and a large semiconductor wafer. Prior to assembly, an X-Y addressed matrix array of transistor-controlled reflective-electrodes is formed in and on the surface of the semiconductor wafer. An image is formed on the display by programming the brightness of each picture element in an appropriate manner.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1973
- Accession Number
- AD0913326
Entities
People
- M. N. Ernstoff
- R. N. Winner
Organizations
- Hughes Aircraft Company