ELECTRO-OPTICAL MATRIX DISPLAY.
Abstract
Phases I and II of the program were completed. Information was obtained concerning the dependence of the dense-banded domain structure on parameters of film preparation in order to be able to produce good display elements with reduced coercive force. The best results were obtained using melt compositions of 83-17 NiFe, high evaporation rates and high substrate temperature. A substantial development effort in preparation of display colloid resulted in a good understanding of the nature of the several processes that can be used. The required control in colloid preparation is possible with a process based upon forming first a seed solution of particles of small and very uniform size, then controlledly enlarging the seed particles, and finally adding the magnetic property. Techniques of panel module assembly were studied, including edge encapsulation, inner bonding and silk screening. Experimental cells were made that show no sign of seal deficiency after five months. Several techniques of addressing display elements were verified. These include pulsed coincident currents, and coincidence of a.c. and pulsed currents for both spot and line-at-a-time writing. A demonstration model was constructed which makes it possible to command a 16 x 16 matrix of display spots on a line-at-a-time basis.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1965
- Accession Number
- AD0616755