Accession Number : ADD004109

Title :   Semiconductor Visible Image Storage Device.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Davis,Kenneth L

Report Date : 07 Jun 1977

Pagination or Media Count : 6

Abstract : An improved optical storage device capable of storing optical images in a charge pattern in a high-resistivity piezoelectric semiconductor layer on a semiconductor substrate. A semiconductor substrate, coated with a layer of electrically insulating material, has a layer of high-resistivity piezoelectric semiconductor covering the insulating layer and covered by a semitransparent biasing electrode. When a negative bias is applied to the electrode, and an optical pattern applied through the electrode, slow states are charged in a short interval to store, for long periods, a pattern imaged by the light. The optical pattern can then be read by using acoustic surface wave imaging techniques to provide electrical imaging of the stored optical pattern. (Author)

Descriptors :   *Patents, *Optical storage, *Optical images, *Semiconductor devices, Visible spectra

Subject Categories : Optics
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE