Patent ID: 6274917
Filing Date: 2001-08-14
Classification: H01L

Abstract:
A semiconductor device having an ordered train of optoelectronic structures for high efficiency in the synthetic reconstruction of color images in a color camera, comprising:providing a semiconductor substrate having a first patterned matrix array of pn-junction photodiodes and charge transport device structures formed therein;a successive layer deposited on the patterned photodiode array to planarize, encapsulate, and create a designed spacer distance for a microlens array structure;a conductive material patterned into a photoshield structure to provide light baffling between the photosensor elements;a successive layer of high transmissivity material deposited and patterned into a planar array of microlens elements in vertical alignment with the photodiode active areas;a successive layer of high transmissivity material serving to encapsulate and planarize the microlens array for protection from chemical, environmental or other further microelectronic processing or treatment operations that can damage, discolor or otherwise degrade the optical and spectral properties of the microlens elements;a successive layer in which is formed a first color filter array structure, overlayed in vertical alignment with the microlens arrays and photodiode elements;a successive layer of high transmissivity material for the encapsulation, protection, planarization, for additional sequences of spectral color filters, optical polarization layers, or other desired structures.