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:
Feb. 17, 1976
Filed:
Jun. 08, 1973
Applicant:
Inventor:
Dean Robert Collins, Dallas, TX (US);
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
G04C / ; H02J / ;
U.S. Cl.
CPC ...
58 5 / ; 307 38 ; 340336 ;
Abstract
There is disclosed a battery powered wrist watch utilizing solid state circuits and a liquid crystal display to eliminate mechanical parts. Complementary metal oxide semiconductor (CMOS) devices are used to drive liquid crystal display cells. The liquid cells dissipate only microwatts of power when energized and the CMOS devices require appreciable power only when switching from one state to the other. The combination of the liquid crystal display with the CMOS driving circuitry provides a low power, compact, portable watch.