Patent ID: 8389345

Claim:
A method for manufacturing a thin film transistor, the transistor including: a light-shielding film formed on an insulating substrate; an insulating film formed on the light-shielding film; a semiconductor film formed on the insulating film; a gate insulating film formed on the semiconductor film, wherein each layer of a laminate configured with a plurality of layers including the light-shielding film, the insulating film, and the semiconductor film is made of silicon or a material containing silicon, a sum of film thickness of the light-shielding film and the insulating film is equal to or less than a film thickness of the semiconductor film, a film thickness of the laminate is equal to or less than a film thickness of the gate insulating film, and the light-shielding film has light-shielding performance for wavelengths of 400 nm to 500 nm, the method for manufacturing the thin film transistor comprising: forming each layer of the laminate on the insulating substrate continuously in a same film-forming device; and then simultaneously patterning the each layer of the laminate.