Patent ID: 7659947

Claim:
A liquid crystal display device comprising: a pair of substrates; and a liquid crystal layer provided between the pair of substrates, wherein one of the pair of substrates comprises: a pixel region including a thin film transistor and a light shielding layer, the light shielding layer having an opening portion for transmitting light and comprising at least one layer, and the thin film transistor comprising a semiconductor layer which is overlapped with the light shielding layer and formed along one side of the opening portion, an interlayer insulating film formed over the thin film transistor; a source wiring electrically connected to the semiconductor layer through a wiring which is formed on the interlayer insulating film; and a gate wiring formed on the interlayer insulating film, wherein, when a change in transmittance of light which transmits through the pair of substrates becomes maximum with respect to a change in voltage applied to the liquid crystal layer, an alignment of a liquid crystal molecule in the liquid crystal layer is controlled such that light which transmits through the liquid crystal layer and is incident into the one of the pair of substrates is incident as polarized light perpendicular to the one side of the opening portion.