Patent ID: 7639331

Claim:
A liquid crystal display device including a first substrate, a second substrate, and a liquid crystal material sandwiched between the first and second substrates, wherein the first substrate includes an active element, a first insulation film formed above the active element, a first electrode formed above the first insulation film, a second insulation film formed above the first electrode, and a second electrode formed above the second insulation film, the second insulation film is a coating insulation film, the first insulation film has a first contact hole, the second insulation film is formed between the first and second electrodes, and inside of the first contact hole, the second insulation film formed inside of the first contact hole is formed with a second contact hole, the second insulation film has a thickness of at least 100 nm and no greater than 500 nm at a first region where the second electrode is superposed and at a second region around the second contact hole, the second electrode is a pixel electrode, the second electrode is electrically connected to the active element via the second contact hole, and a retention capacity is formed by the first and second electrodes and the second insulation film.