Patent ID: 6777272
Filing Date: 2004-08-17
Classification: H01L

Abstract:
A method of manufacturing an active matrix display device which comprises an active matrix circuit including pixel electrodes and a data driver circuit for driving said active matrix circuit, said active matrix circuit and said data driver circuit being provided over a same substrate and having a thin film transistor, respectively, said method comprising the steps of:forming an amorphous semiconductor film over said substrate; providing said semiconductor film with a catalytic element for promoting crystallization of said semiconductor film; crystallizing said amorphous semiconductor film by a first heat treatment to form a crystalline semiconductor film; gettering said catalytic element in said crystalline semiconductor film by a second heat treatment; and etching said crystalline semiconductor film into a semiconductor layer for said thin film transistor of said data driver circuit, wherein the number of lines of shift register circuits constituting said data driver circuit is p, the number of video terminals inputted into said data driver circuit from an outside of said substrate is q, and the number of said pixel electrodes included in said active matrix circuit and driven by said data driver circuit is R, R/pq is from 50,000 to 3,000,000.