Patent ID: 6903372
Filing Date: 2005-06-07
Classification: G09G,H01L

Abstract:
1. A thin-film semiconductor device comprising an insulator, a polycrystalline layer formed on said insulator, and a transistor comprising a source region, a drain region, a gate region, and a channel region formed at the surface portion of said polycrystalline layer, said polycrystalline layer comprising crystal grains of an element selected from the group of Type-IV elements and their alloys, said crystal grains joined with crystal grain boundaries of {111} twin of Diamond structure, wherein said insulator is a glass substrate, said polycrystalline layer is a Si thin-film, said Si thin-film has a thickness of 10 to 150 nm, and said Si thin-film has a plurality of crystal grains having {110} planes parallel to the surface of said substrate, and wherein there is a current path between the source and the drain that is made up only of {110} surface grains.