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:
Mar. 18, 2014
Filed:
Jun. 03, 2008
Applicants:
Jean Dijon, Champagnier, FR;
Thierry Leroux, Caen, FR;
Inventors:
Jean Dijon, Champagnier, FR;
Thierry Leroux, Caen, FR;
Assignee:
Commissariat a l'Energie Atomique, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/1335 (2006.01); G09F 13/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A lighting device for liquid crystal display provides as output a polarized extended light flux. It comprises a light sourcecomprising a layer with high albedo A on the light emission surface S(A), on which are stacked a quarter-wave plateand a reflecting polarizer. This results in a light transmission gain of the order of 1+A, which makes it possible to produce displays with high luminance and low electrical consumption. Application to flat-screen displays.