LED X-Y Matrix Display.

摘要

The Research and Development Program goal was to fabricate a one-inch by one-inch green LED display surface using flip-chip. It was demonstrated that an LED display of this type can be developed and built for use in the cockpit of advanced military aircraft. Problems experienced with the metallization and isolation in the arrays limited the yield of usable arrays to 24for a reduced surface area of 1/2-inch by 3/4-inch. The display surface has 64lines per inch capability and is composed of GaP arrays with 8by 8LEDs in a 1/8-inch by 1/8-inch flip-chip bondable system. The display surface is annotated by a display generator and display processor to simulate an Attitude Director Indicator for aircraft cockpit displays. A contrast enhancement filter also was developed to increase the contrast ratio to a level that would allow use of the display on a 10,000foot candle ambient. The filter proved very effective. The total program conclusively demonstrated that the concept of using an LED high-resolution display for airborne cockpit use is correct. (Author)