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:
Apr. 23, 2019
Filed:
Mar. 21, 2017
A.u. Vista Inc., Milpitas, CA (US);
Hai-Wei Chen, Orlando, FL (US);
Shin-Tson Wu, Orlando, FL (US);
Wei Duan, Hubei, CN;
Ming-Chun Li, Hsinchu, TW;
Seok-Lyul Lee, Hsinchu, TW;
A.U. VISTA INC., Milpitas, CA (US);
THE UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATION, INC., Orlando, FL (US);
Abstract
Display devices and related methods involving patterned phase retarding are provided. A representative display device includes: a backlight unit, having a light source and a color conversion layer having an alignment direction, the light comprising a first light exhibiting a first upstream polarization ratio, a second light exhibiting a second upstream polarization ratio, and a third light exhibiting a third upstream polarization ratio; and a patterned phase retarder positioned to receive the light, having a plurality of half-wave regions to alter polarization of light passing therethrough, and a plurality of free regions to pass light without altering the polarization; wherein polarization ratio (PR) is defined by PR=(I−I)/(I+I); and wherein the first upstream polarization ratio exhibits a first sign, and both the second upstream polarization ratio and the third upstream polarization ratio exhibit a second sign opposite the first sign.