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:
Jul. 08, 1986
Filed:
Sep. 13, 1983
Applicant:
Inventors:
David W DeBerry, Austin, TX (US);
Alfred Viehbeck, Austin, TX (US);
Assignee:
SumX Corporation, Austin, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G / ;
U.S. Cl.
CPC ...
340785 ; 340707 ; 340713 ; 340714 ; 350357 ;
Abstract
A solid electrochromic film is used on a semiconductor electrode in a display device permitting the user to write on the display using a light pen. Additional elements, including arrangement of the semiconductor electrodes transversely with respect to counter-electrodes, or providing an electrochromic film on the counter-electrodes, further enhance the versatility of the display device.