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:
Oct. 06, 1998
Filed:
Oct. 11, 1996
Applicant:
Inventor:
Michael Owen McCann, Gloucestershire, GB;
Assignee:
Smiths Industries PLC, London, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B / ; H05B / ; G02F / ;
U.S. Cl.
CPC ...
219210 ; 219539 ; 349 21 ;
Abstract
A transparent LCD back-lit display has a transparent indium-tin oxide heater layer extending across the display and a resistive metal strip heater, supported in a frame of low thermal conductivity, extending around its edge. One temperature sensor is mounted at the center of the display and another is mounted at the edge. The sensors are connected to a heater control unit, which controls power supplied to the heater layer and the edge strip heater to maintain the temperatures at the center and edge of the display equal.