Patent ID: 7742113
Filing Date: 2010-06-22
Classification: G02F,H01L

Abstract:
1. A liquid crystal display device comprising: a first substrate including a video signal line, a pixel electrode, a thin film transistor having a first electrode thereof connected to the video signal line and a second electrode thereof connected to the pixel electrode, a first silicon nitride film formed above the second electrode, an organic insulation film formed above the first silicon nitride film, a capacitance electrode formed above the organic insulation film, and a second silicon nitride film formed above the capacitance electrode and below the pixel electrode; a second substrate arranged to face the first substrate in an opposed manner; and liquid crystal sandwiched between the first substrate and the second substrate, wherein the first silicon nitride film is more dense than the second silicon nitride film, the first silicon nitride film and the second silicon nitride film form a contact hole therein which penetrates both of the first silicon nitride film and the second silicon nitride film collectively, the second electrode and the pixel electrode are connected to each other via the contact hole, the second silicon nitride film is not in contact with the second electrode, a potential different from a potential applied to the pixel electrode is applied to the capacitance electrode, and a holding capacitance is formed by the pixel electrode, the second silicon nitride film and the capacitance electrode.