The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 21, 1978
Filed:
May. 29, 1975
Robert V Pole, Los Gatos, CA (US);
Meredith D Shattuck, San Jose, CA (US);
Glenn T Sincerbox, San Jose, CA (US);
Harald W Werlich, Los Gatos, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A direct view display device comprises a pair of conductive electrodes in spaced relationship and a recording medium having the properties of being both photo-ionizable and capable of electro-chemically producing colored species occupies the space between the electrodes. The display device is exposed to an optical pattern of radiation to which the recording material is sensitive to produce a latent image, and a potential is applied between the electrodes to produce a very dense image corresponding to the optical pattern. The image can be erased by reversing the potential between the electrodes so that the expose and enhance process can be repeated.