Patent ID: 7486287

Claim:
A liquid crystal on silicon (LCoS) chip comprising: a silicon substrate having an array of memory cells formed thereon, each said memory cell including an N-active and a P-active; a first polycrystalline silicon layer disposed over said silicon substrate forming a plurality of word lines extending in parallel across said memory cells; a second polycrystalline silicon layer disposed over said first polycrystalline silicon layer and forming a plurality of first capacitor plates disposed above regions of said substrate not covered by said word lines; a third polycrystalline silicon layer disposed over said second polycrystalline silicon layer and including a plurality of second capacitor plates disposed above said first capacitor plates, said first and second capacitor plates forming capacitor storage nodes of said memory cells; a first metal layer disposed above said third polycrystalline silicon layer and forming a plurality of bit lines extending in parallel across said memory cells, said bit lines being directed orthogonal to said word lines, said first metal layer including a plurality of node shields and a plurality of first connecting nodes that is coupled to said second polycrystalline silicon layer and said N-actives, each of the node shields surrounding one of the first connecting nodes to reduce cross-talk between the bit lines and said capacitor storage nodes, said first metal line further including a plurality of bit line shields for reducing cross-talk between said bit lines; said third polycrystalline silicon layer including shield portions located between the intersections of said bit lines and word lines thereby reducing cross-talk therebetween; a second metal layer for blocking stray light entered into said memory cells and including a plurality of second connecting nodes, each of said second connecting nodes being coupled to one of said first connecting nodes; and a third metal layer for applying electrical potentials to liquid crystal located over the memory cells and thereby forming an image in the liquid crystal, said third metal layer including a plurality of contacts for connecting said third metal layer to said second connecting nodes.