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. 27, 2003
Filed:
May. 02, 2001
Applicant:
Inventors:
Assignee:
United Microelectronics Corp., Hsinchu, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 2/700 ;
U.S. Cl.
CPC ...
H01L 2/700 ;
Abstract
A phase grating image-sensing device. The device includes a plurality of photodiodes, a smoothing layer, a color filter layer and a plurality of phase gratings. The photodiodes are formed on a substrate and isolated from each other by isolation structures. The smoothing layer covers the photodiodes and the isolation structures. The color filter layer is embedded within the smoothing layer forming a sandwich structure with the smoothing layer. The phase gratings are formed over the smoothing layer positioned at corresponding locations above isolation structures. The phase grating layers produce a constructive interference of light passing through the smoothing layer.