Patent ID: 8482003
Filing Date: 2013-07-09
Classification: G09G,H01L

Abstract:
1. An image display unit comprising thin-film transistors of top gate type, a storage capacitor and a storage capacitor line, wherein: the conductivity type of one of said thin-film transistors is an n-channel conductivity type and the conductivity type of another of said thin-film transistors is a p-channel conductivity type; a polysilicon film, a gate insulator film, a bottom layer metal film and a top layer metal film are laminated from bottom to top; channels, drains and sources of said thin-film transistors are formed in the polysilicon film; a gate electrode of said n-channel thin-film transistor comprises a laminated structure including said bottom layer metal film and said top layer metal film, a gate electrode of said p-channel thin-film transistor comprises a single layer structure comprised of said bottom layer metal film; a top electrode of said storage capacitor is comprised of said bottom layer metal film; a bottom electrode of said storage capacitor is comprised of said polysilicon film; said storage capacitor line is comprised of said top layer metal film and is connected with the bottom layer metal film, phosphorous ion density of said bottom layer metal film of said bottom electrode is higher than phosphorous ion density of said bottom layer metal film of said storage capacitor line, and said top layer metal film does not extend over the storage capacitor.