Liquid crystal display device

摘要

It is an object of the present invention to provide a liquid crystal display device which has a wide viewing angle and less color-shift depending on an angle at which a display screen is seen and can display an image favorably recognized both outdoors in sunlight and dark indoors (or outdoors at night). The liquid crystal display device includes a first portion where display is performed by transmission of light and a second portion where display is performed by reflection of light. Further, a liquid crystal layer includes a liquid crystal molecule which rotates parallel to an electrode plane when a potential difference is generated between two electrodes of a liquid crystal element provided below the liquid crystal layer.

主权项

1. A liquid crystal display device comprising:
a transistor comprising:
a gate electrode;a semiconductor layer overlapping with the gate electrode; anda gate insulating layer between the gate electrode and the semiconductor layer; a first conductive layer on and in electrical contact with the semiconductor layer; a second conductive layer on a same plane and of a same material as the first conductive layer; a first insulating layer over the transistor and over the first and the second conductive layers; a transmitting common electrode overlapping the second conductive layer; a third conductive layer on and in direct contact with the transmitting common electrode, the third conductive layer overlapping the second conductive layer and the first insulating layer; a second insulating layer on and in direct contact with the first insulating layer and with the third conductive layer; and a transmitting pixel electrode on and in direct contact with the second insulating layer, overlapping the transmitting common electrode, and in electrical contact with the first conductive layer via a second contact hole in the second insulating layer and a first contact hole in the first insulating layer, wherein the first contact hole and the second contact hole overlap.