Accession Number : AD0661092
Title : GALLIUM-PHOSPHIDE LIGHT-EMITTING DIODE ARRAY.
Descriptive Note : Quarterly rept. no. 1 1 May to 31 Jul 67,
Corporate Author : IBM FEDERAL SYSTEMS DIV OWEGO N Y ELECTRONICS SYSTEMS CENTER
Personal Author(s) : Farrell,Henry C. ; Lynch,Robert J.
Report Date : OCT 1967
Pagination or Media Count : 27
Abstract : The object of the research is the design and fabrication of a versatile experimental display module incorporating an array of 60 gallium-phosphide diodes as light-emitting elements. This effort includes the associated control circuitry for accessing, latching, and providing the necessary input waveforms and impulses for X-grid and Y-grid access. This report covers the work accomplished towards the development of an experimental display module using red-light-emitting gallium-phosphide diodes. Both analog and digital X - Y scanning circuits were breadboard tested. Techniques for measuring the light output and for selecting diodes for high-density arrays were also developed. (Author)
Descriptors : (*DISPLAY SYSTEMS, SEMICONDUCTOR DIODES), (*SEMICONDUCTOR DIODES, *LIGHT), (*GALLIUM COMPOUNDS, PHOSPHIDES), MODULES(ELECTRONICS), SCANNING, SHIFT REGISTERS, CIRCUITS, LOGIC CIRCUITS, COLORS, FEASIBILITY STUDIES
Subject Categories : Electrical and Electronic Equipment
Distribution Statement : APPROVED FOR PUBLIC RELEASE