Patent ID: 7995165

Claim:
A Liquid Crystal on Silicon (LCOS) display unit, comprising: a silicon substrate; a pixel switch circuit layer on the silicon substrate, the pixel switch circuit layer including a Metal-Oxide-Semiconductor Field Effect Transistor (MOSFET); a light shielding layer on the pixel switch circuit layer; an insulation layer on the light shielding layer; a micromirror layer on the insulation layer, the micromirror layer, the insulation layer and the light shielding layer constituting a metal-insulator-metal (MIM) capacitor, and the micromirror layer being electrically connected with a source of the MOSFET; a liquid crystal layer on the micromirror layer; and an upper glass substrate layer on the liquid crystal layer, wherein the light shielding layer is grounded; wherein the LCOS display unit further comprises a mirror connecting pad that is formed in the light shielding layer to be isolated from the light shielding layer, and the mirror connecting pad is electrically connected with the source of the MOSFET; an opening is formed in the insulation layer, and the opening is filled with a conductive material which electrically connects the micromirror layer to the mirror connecting pad; and the light shielding layer is electrically connected with a ground pad via a through hole of the pixel switch circuit layer; and the ground pad is grounded; wherein the insulation layer has a thickness ranging from 100 Å to 1000 Å; and wherein the LCOS display unit has one capacitor.