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:
Aug. 07, 2007
Filed:
May. 26, 2005
Shih-chia Hsu, Kaohsiung, TW;
Jyh-haur Huang, Pingtung Hsien, TW;
Shih-Chia Hsu, Kaohsiung, TW;
Jyh-Haur Huang, Pingtung Hsien, TW;
AU Optronics Corp., Hsinchu, TW;
Abstract
The provided backlight module includes a reflection sheet, a retardation plate, a light-guide plate, a light source, and a sub-wavelength grating plate. The retardation plate is set over the reflection sheet. The light-guide plate is disposed over the retardation plate, and the surface of the light-guide plate comprises a plurality of micro-structures. The light source is set beside the light-guide plate, and the light from the light source transferring into the light-guide plate passes through one of its end and out through the micro-structures. The sub-wavelength grating plate is disposed over the light-guide plate: (i) to transmit light having a polarization oriented parallel to the rows of bars and to define a transmitted light, corresponding to the light, as P-ray, and (ii) to reflect light having a polarization oriented perpendicular to the rows of bars and to define a reflected light, corresponding to the light, as S-ray.