MANUFACTURING METHOD FOR LIQUID CRYSTAL DISPLAY DEVICE

摘要

A LCD device having a large pixel holding capacitance includes opposedly facing first and second substrates, and liquid crystal between them. The first substrate includes a video signal line, a pixel electrode, a thin film transistor having a first electrode connected to the video signal line and a second electrode connected to the pixel electrode, a first silicon nitride film formed above the second electrode, an organic insulation film above the first silicon nitride film, a capacitance electrode above the organic insulation film, and a second silicon nitride film above the capacitance electrode and below the pixel electrode. A contact hole etched in both the first and second silicon nitride films connects the second electrode and the pixel electrode to each other. A holding capacitance is formed by the pixel electrode, the second silicon nitride film and the capacitance electrode.

主权项

1. A display device comprising: a substrate;
a first inorganic insulation film above the substrate, having a first hole in a contact region; an organic insulation film above the first inorganic insulation film, having a second hole in the contact region; and a second inorganic insulation film above the organic insulating film, covering a sidewall of the second hole, and having a third hole in the contact region, wherein the first inorganic insulation film contacts the second inorganic insulation film without the organic insulation film therebetween in the contact region.