Patent ID: 6980269

Claim:
A reflective layer structure formed in a pixel unit of a liquid crystal display for reflecting ambient light, said liquid crystal display having a first substrate, a second substrate, and a liquid crystal layer formed between said first substrate and said second substrate, said pixel unit having a transmitting region and a reflecting region, said structure comprising: a bump layer located over said first substrate; an amorphous indium tin oxide located over said bump layer; a silicon-containing rough layer located over said amorphous indium tin oxide and said silicon-containing rough layer with a rough surface, wherein a height difference of a region of said rough surface is less than about 100 nm; and a reflective layer located over said silicon-containing rough layer and conformal to said silicon-containing rough layer to allow said reflective layer to have a surface similar to said rough surface; wherein a bump layer surface has a height difference of about 30 to 1600 nm.