Patent ID: 7733446

Claim:
A semi-transmissive liquid crystal display device comprising a liquid crystal disposed between a TFT array substrate having, in one pixel, a light transmissive pixel electrode that is disposed to transmit light to the liquid crystal and a light reflective pixel electrode that is disposed to reflect light to the liquid crystal and an opposite substrate having an opposite transparent electrode, wherein the TFT array substrate comprises: a gate wiring that is made of a first conductive film formed on a transparent insulating substrate and includes a gate electrode; a first insulating film formed on the first conductive film; a semiconductor layer formed on the first insulating film and opposed to the gate electrode; a source wiring made of a second conductive film that is formed on the first insulating film and intersects with the gate wiring and has a source electrode disposed on the semiconductor layer; a drain electrode made of the second conductive film and disposed on the semiconductor layer; a thin film transistor that is formed of the gate electrode, the semiconductor layer, the source electrode, and the drain electrode; and a second insulating film formed on the first insulating film, the source wiring, and the thin film transistor, wherein the reflective pixel electrode is formed from the second conductive film and extends from the drain electrode, the second insulating film has an opening on the reflective pixel electrode, the opening delimiting a portion of the reflective pixel electrode located at a far side from the drain electrode the transmissive pixel electrode is disposed on the transparent insulating substrate so as to be aligned with the reflective pixel electrode and is positioned at a farther side than the reflective pixel electrode from the drain electrode, and the transmissive pixel electrode is electrically connected with the portion of the reflective pixel electrode through the opening of the second insulating film, the opening delimiting the transmissive pixel electrode.