Patent ID: 8377765

Claim:
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, an organic insulation film formed above the second electrode, a counter electrode formed above the organic insulation film, and a silicon nitride film formed above the counter electrode and below the pixel electrode, a second substrate arranged to face the first substrate in an opposed manner, wherein the organic insulation film has a first contact hole, the silicon nitride film has a second contact hole, the first contact hole is larger than the second contact hole, the first contact hole has a side wall which consists of the organic insulation film, at least a part of the side wall is covered with the silicon nitride film, and the second electrode and the pixel electrode are connected to each other via the first contact hole and the second contact hole.