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. 14, 2007
Filed:
Oct. 07, 2005
Po-hung Yao, Luzhu Shiang, TW;
Yu-nan Pao, Zhubei, TW;
Hsiu-chen Hsu, Tainan, TW;
Yi-ting Sun, Taipei, TW;
Ben-sheng Lin, Hsinchu, TW;
Po-Hung Yao, Luzhu Shiang, TW;
Yu-Nan Pao, Zhubei, TW;
Hsiu-Chen Hsu, Tainan, TW;
Yi-Ting Sun, Taipei, TW;
Ben-Sheng Lin, Hsinchu, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
A direct backlight module is disclosed, which comprises: a frame; at least a light source, being arranged in the frame; a diffuser, being disposed over the frame; and at least an optical film, being disposed over the diffuser, comprising a substrate having a top surface and a bottom surface; wherein a diffusion unit and a collimation unit are formed on the top surface while using the diffusion unit for diffusing light incident to the bottom surface and the collimation unit for collimating light incident to the bottom surface. The direct backlight module of the invention is capable of enhancing luminous efficiency, and further, it has a comparatively simple structure so that the manufacturing cost of the optical film can be reduced.