US Patent 7148506 Active matrix display and electrooptical device

A liquid crystal device having a source line over a substrate, a gate line over the substrate, and a plurality of pixels or a pixel electrode over the substrate. A plurality of pixels may be arranged in a matrix array at intersections of source lines and gate lines. Each of a plurality of pixels may have first and second thin film transistors, a pixel electrode, and a light source. A portion of one of the source lines may cover a first thin film transistor so that the first thin film transistor is light shielded while a second transistor may not be covered by any portion of one of the source lines.