Patent ID: 6617203
Filing Date: 2003-09-09
Classification: H01L

Abstract:
A method of manufacturing a flat panel display device including first to fourth thin film transistors, the first, third, and fourth thin film transistors being of a first conductive type, and the second thin film transistor being of a second conductive type, the method comprising the steps of:(a) providing a substrate comprising a non-display region having the first thin film transistor and the second thin film transistor formed thereon, and a display region having the third thin film transistor and the fourth thin film transistor formed thereon; (b) forming first to fourth semiconductor layers of the first to fourth thin film transistors on the substrate; (c) forming a gate insulating layer over an entire first surface of the substrate; (d) forming first to fourth conductive patterns and a pixel electrode on the gate insulating layer, the first to fourth conductive patterns formed over the first to fourth semiconductor layers, the pixel electrode formed over a portion of the display region; (e) forming first to fourth gate electrodes and a fifth conductive pattern, the first to fourth gate electrodes formed on the first to fourth conductive patterns, respectively, the fifth conductive pattern formed on the pixel electrode; (f) ion-implanting high-density impurity of the first conductive type into the first, third, and fourth semiconductor layers to form high-density source and drain regions of the first conductive type; (g) etching the first to fourth conductive patterns using the first to fourth gate electrodes as an etching mask; (h) forming a photoresist pattern to expose a portion of the non-display region corresponding to the second semiconductor layer; and (i) ion-implanting high-density impurity of the second conductive-type into the second semiconductor layer to form high-density source and drain regions of the second conductive-type.