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. 17, 2000
Filed:
Jun. 16, 1998
Mariana Sendova, Sarasota, FL (US);
Baker Electronics, Inc., Sarasota, FL (US);
Abstract
A light guide used in flat panel liquid crystal display screens is provided. The light guide has triangular prismatic microgrooves cut within it to define a groove density that varies with distance from a light source. The microgrooves also have a groove angle that is based on two times the critical angle of the light guide, plus or minus approximately two degrees. This configuration of groove density and groove angle provides brighter back lighting compared to conventional flat panel displays with increased uniformity over the majority of the display. The maximized luminance and uniformity allows larger displays to be created out of a single light guide or multiple portions of light guides placed next to each other or in a stacked configuration.