Patent ID: 7541615

Claim:
A display comprising: a driving substrate; and a plurality of pixel electrodes and thin film transistors arrayed on the driving substrate, said thin film transistors driving said pixel electrodes, wherein each said thin film transistor includes a semiconductor thin film having an active region made to be polycrystalline by irradiation with an energy beam, and a gate electrode provided so as to cross said active region, and in a channel part of said active region overlapping with said gate electrode, a crystal state is varied periodically along a channel length region, and substantially the same crystal state crosses said channel part; wherein an amorphous zone and a crystalline zone are alternately provided in the manner of crossing said active region, on a basis of a period pertaining to the variation in said crystal state, and wherein said crystalline zone, crystal grains are in a crescent shape convex in the extending direction of said crystalline zone and said crystal grains are sized to fully range in the width direction of said crystalline zone and said crystal grains are arrayed along said extending direction of said crystalline zone.