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:
May. 19, 2015
Filed:
Mar. 30, 2012
Wang-yang LI, Tainan, TW;
Ting-i Wu, Kaohsiung, TW;
Huai-fang Tsai, Zhubei, TW;
Wai-hon Lee, Los Altos, CA (US);
Wang-Yang Li, Tainan, TW;
Ting-I Wu, Kaohsiung, TW;
Huai-Fang Tsai, Zhubei, TW;
Wai-Hon Lee, Los Altos, CA (US);
CHI MEI MATERIALS TECHNOLOGY CORPORATION, Tainan, TW;
CHI MEI VISUAL TECHNOLOGY CORPORATION, Tainan, TW;
KLASER TECHNOLOGY INC., Hsinchu, TW;
FINITY LABORATORIES, Los Altos, CA (US);
Abstract
A display apparatus is provided. The display apparatus comprises a display device for displaying an image and a diffractive optical element. The diffractive optical element is disposed on a light emitting side of the display device. The diffractive optical element comprises first grating regions. Each of the first grating regions has first diffraction gratings having a constant cycle space and the same azimuth angle. An area of the first grating regions occupies 17.5%˜94% of an area of the diffractive optical element.