Patent Number: 6,255,133

Title: Electro optical devices with reduced filter thinning on the edge pixel photosites and method of producing same

Abstract: The present invention relates to electro optical devices with a reduced filter thinning on the edge pixels and a method for reducing the thinning of filter layers on the pixels closest to the edge of an electro optical device such as a photosensitive chip, as would be used, for example, in a full-color digital copier or scanner. A semiconductor wafer includes a main surface defining a plurality of chip areas and tab regions separated by grooves, wherein the chip areas include inner photosites, outer photosites and bonding pads. A plurality of dams are deposited over the main surface in the tab regions, and a clear layer is deposited over the main surface exclusive of the bonding pads. Alternatively, a clear layer is deposited over the main surface exclusive of the bonding pads, and a plurality of tabs is then deposited in the tab regions on the main surface. A first primary color filter layer is deposited over at least first inner photosite and first outer photosite, and the first primary color filter layer transmits a primary color.

Inventors: Ormond; Brian T. (Webster, NY), Jedlicka; Josef E. (Rochester, NY), Grimsley; Thomas (Fairport, NY), Hosier; Paul A. (Rochester, NY)

Assignee: Xerox Corporation

International Classification: H01L 27/146 (20060101); H01L 021/302 ()

Expiration Date: 07/03/2018