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. 23, 2014
Filed:
Aug. 21, 2012
Chao-kai Hsu, Hsinchu County, TW;
Yu-hua Chen, Nantou County, TW;
Wei-chung Lo, Taipei, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
A plane light source including a circuit substrate, a plurality of sets of side-view light-emitting devices (LEDs), and a diffusive light-guiding layer is provided. The side-view LEDs are arranged in array over the circuit substrate and are electrically connected with the circuit substrate. The diffusive light-guiding layer covers the side-view LEDs, wherein the diffusive light-guiding layer includes a plurality of diffusive light-guiding units arranged in array and connected to each other. Each of the diffusive light-guiding units is respectively corresponded to illumination coverage of one set of side-view LEDs. Each set of side-view LEDs at least includes two side-view LEDs for emitting light respectively along two different directions and towards into one single diffusive light-guiding units.