. . . . . . . . "For the gate electrode 20, typical materials may be used without limitation, for example, one or more selected from among metals, including gold (Au), silver (Ag), aluminum (Al), nickel (Ni), molybdenum (Mo), tungsten (W), and chromium (Cr), alloys thereof (e.g., molybdenum/tungsten (Mo/W) alloy), metal oxides, including indium tin oxide (ITO) and indium zinc oxide (IZO), and conductive polymers," . . .