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:
Feb. 24, 2009
Filed:
Jun. 14, 2006
Chen-yang Huang, Taoyuan County, TW;
Cheng-wei Chu, Taipei Hsien, TW;
Chen-Yang Huang, Taoyuan County, TW;
Cheng-Wei Chu, Taipei Hsien, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
A polarized light emitting device including a first reflector, an LED chip, a fluorescent layer, a second reflector and a polarizer with corrugation structure is provided. In the polarized light emitting device, the LED chip emits a first light (e.g. ultraviolet light) confined within a resonant chamber configured by the first reflector and the second reflector, therefore the fluorescent layer can be adequately illuminated by the first light, thus emitting more second light (visible light) and improving the electro-optical transforming efficiency. The second reflector is adapted for reflecting the first light, and allows most of the second light to pass through. The polarizer with corrugation structure disposed outside the resonant chamber is adapted for efficiently polarizing the second light.