Patent ID: 8681283

Claim:
A liquid crystal on silicon (LCOS) display device, the device comprising: a semiconductor substrate comprising a surface region; a gate dielectric layer overlying the surface region of the semiconductor substrate; a word line formed overlying the gate dielectric layer overlying the surface region of the semiconductor substrate; a first source/drain region coupled to the word line; a second source/drain region coupled to the word line to form an MOS transistor device from the word line, the first source/drain region and the second source/drain region; a first interlayer dielectric formed overlying the word line, the first source/drain region, and the second source drain region; a first plug structure formed within a first portion of the first interlayer dielectric and coupled to the first source/drain region; a second plug structure formed within a second portion of the first interlayer dielectric and coupled to the second source/drain region; a second interlayer dielectric formed overlying the first interlayer dielectric; a bottom electrode structure formed overlying the second interlayer dielectric, the bottom electrode structure having an opening aligned with the first plug structure; a capacitor dielectric formed overlying the bottom electrode; a top electrode structure formed overlying the capacitor dielectric to form a capacitor structure including the bottom electrode structure, the capacitor dielectric, and the top electrode structure; a via disposed in the second interlayer dielectric and aligned with the first plug structure, the via being configured to electrically couple the top electrode structure with the first plug structure; a mirror surface formed overlying the top electrode structure to form a pixel electrode structure; and a liquid crystal material provided overlying the mirror surface; whereupon the capacitor structure is configured to cause an on-state of the liquid crystal material when the capacitor structure holds a voltage potential for the pixel electrode structure, and the capacitor structure is configured to cause an off-state of the liquid crystal material when the capacitor structure is free from a voltage potential for the pixel electrode structure.