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 conductive layer formed above the substrate; an organic layer formed above the substrate and having a first hole; an first inorganic insulation layer formed above the organic layer and having a second hole which is formed above the first conductive layer; and a second conductive layer formed above the first inorganic insulation layer; wherein the first inorganic insulation layer covers the first hole of the organic layer, and has a first region which has a first inclined surface, a second region which has a second inclined surface, and a third region which has a connection surface disposed between the first inclined surface and the second inclined surface, wherein the second conductive layer is formed above the first inclined surface, the second inclined surface, and the connection surface, and contacts with the first conductive layer, and wherein a part of the connection surface is in parallel with a surface of the first conductive layer.