Patent ID: 8518763
Filing Date: 2013-08-27
Classification: H01L

Abstract:
1. A thin-film transistor device manufacturing method, comprising: providing a substrate; forming a plurality of gate electrodes above the substrate; forming an insulation layer on the plurality of gate electrodes; forming an amorphous silicon layer on the insulation layer; crystallizing the amorphous silicon layer using laser light emitted from a predetermined laser of at least 405 nm and at most 488 nm in wavelength while moving the predetermined laser in a direction relative to the substrate, to produce a crystalline silicon layer; and forming a source electrode and a drain electrode on the crystalline silicon layer in a region that corresponds to each of the plurality of gate electrodes, wherein a film thickness of the insulation layer and a film thickness of the amorphous silicon layer define a value X and a value Y, the value X is obtained by dividing an optical film thickness of the amorphous silicon layer by a wavelength of the laser light, the optical film thickness of the amorphous silicon layer being a product of multiplying the film thickness of the amorphous silicon layer and a refractive index of the amorphous silicon layer, the value Y is obtained by dividing an optical film thickness of the insulation layer by the wavelength of the laser light, the optical film thickness of the insulation layer being a result of multiplying the film thickness of the insulation layer by a refractive index of the insulation layer, and the value X and the value Y satisfy: ΔA′ is calculated according to an expression of: