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:
Jul. 05, 2011
Filed:
May. 30, 2008
Rene Lujan, Sunnyvale, CA (US);
William S. Wong, San Carlos, CA (US);
Rene Lujan, Sunnyvale, CA (US);
William S. Wong, San Carlos, CA (US);
Palo Alto Research Center Incorporated, Palo Alto, CA (US);
Abstract
A photosensor structure includes a pixel metal layer disposed in physical and electrical contact with a pixel thin film transistor and a lower sensor layer of a p-i-n photosensor. The pixel metal layer extends laterally to an extent less that the lower sensor layer such that an overhang region is defined below the lower sensor layer and the adjacent the lateral edge of the pixel metal layer. When the relatively thick intrinsic sensor layer is formed over the lower sensor layer, it attaches to the upper surface and, due to the presence of the overhang region, the lateral edge of the lower sensor layer, forming a discrete intrinsic sensor layer structure over the pixel which is physically isolated from adjacent corresponding structures. This isolation allows for thermal expansion and contraction during formation of the intrinsic sensor layer without cracking the intrinsic sensor layer structure.