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:
Dec. 24, 2013
Filed:
Dec. 09, 2011
Xiang-dong MI, Northborough, MA (US);
Xinyu Zhu, Acton, MA (US);
Xiang-Dong Mi, Northborough, MA (US);
Xinyu Zhu, Acton, MA (US);
SKC Haas Display Films Co., Ltd., Choongchungnamdo, KR;
Abstract
The present invention provides a light guide plate comprising an input surface for receiving light from a light source, an output surface for emitting light, and a bottom surface opposing to the output surface, wherein at least one of the output surface and the bottom surface has a micro-pattern, the micro-pattern comprising a plurality of micro-lenses. The light guide plate further comprises micro-lens having a width w, a length l, a depth d, an orientation angle, a first base angle α, a second base angle α, a first entry angle β, and a second entry angle βsuch that when depth change Δd is 0.1 μm, area change ratio, defined as is less than or equal to 0.95% and the beginning number density of the micro-lenses is greater than or equal to 8 per mm, Δw being width change and Δl being length change corresponding to depth change Δd.