Thin film transistor and method of manufacturing the same

A thin film transistor array for using a liquid crystal display device, comprising:

• a transparent insulative substrate;
• a plurality of gate lines and drain lines arranged in row and column directions on said substrate, for connecting to thin film layers deposited on said substrate;
• a plurality of thin film transistors arranged on said substrate in the form of a matrix at cross points of said gate lines and said drain lines, each of said transistors having
• a gate electrode formed on said substrate,
• a gate insulating film formed on said substrate so as to cover at least the gate electrode,
• a semiconductor film, having a channel portion defined at a first surface part thereof, and being formed on at least said gate insulating film,
• source and drain electrodes formed on surface parts of said semiconductor film different from said first surface part at which said channel portion is defined so as to be separated from each other by a predetermined distance,
• an electrode insulating film for covering at least said source electrode and said gate insulating film;
• and
• a pixel electrode formed to overlap said gate insulating film and on said electrode insulating film, and electrically connected to said source electrode.