GALLIUM-PHOSPHIDE LIGHT-EMITTING DIODE ARRAY.
Final rept. 1 May-30 Nov 67,
IBM FEDERAL SYSTEMS DIV OWEGO N Y ELECTRONICS SYSTEMS CENTER
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The goal of this program was to provide the United States Army Electronics Command with a versatile experimental display module using gallium-phosphide GaP light-emitting elements. The potantial advantages of a solid-state display over other presently used displays are its light weight, small volume, low-voltage operation, and long life. The module design resulting from this effort employs 60 individually mounted gallium-phosphide diodes arranged in six parallel rows of 10 diodes each. Each diode is addressed by means of associated control circuitry which provides coincident cross-grid access and the means for diode latching in the conductive or nonconductive state. The format for addressing X and Y grids may be analog, using voltage amplitude, or digital, using a binary-coded decimal BCD. Either line scan or random access may be used for displays with this diode array. Author
- Electrical and Electronic Equipment