Patent ID: 7468766
Filing Date: 2008-12-23
Classification: G02F

Abstract:
1. A method of forming a spatial light modulator array comprising the steps of: forming a plurality of electrical circuits in a semiconductor substrate positioned for interconnecting with subsequently formed liquid crystal devices, respectively, forming one or more layers of interconnections above said plurality of electrical circuits, forming a first dielectric layer over said electrical circuits and said layers of interconnections, planarizing said first dielectric layer to provide a substantially planar upper surface on said first dielectric layer, forming a reflector/absorber layer of conductive material, positioned and patterned with respect to subsequently formed liquid crystal devices for shielding said plurality of electrical circuits from ambient light, forming a second dielectric layer above said patterned reflector/absorber layer, forming studs through said second dielectric layer for electrical connection to subsequently formed mirrors, forming a plurality of mirrors over said dielectric layer and patterned to form the lower electrode of said plurality of liquid crystal devices, said mirrors overlapping said reflector/absorber layer to form a capacitor with respect to said mirrors and to attenuate light traveling between said reflect/absorber and said mirrors, forming a plurality of spacers positioned in between selected mirrors of said plurality of mirrors, applying a layer of liquid crystal material, orienting said layer of liquid crystal material, and forming a top electrode of said plurality of mirrors to form said plurality of liquid crystal devices.