Patent ID: 6040200
Filing Date: 2000-03-21
Classification: G02F,H01L,Y10S

Abstract:
A method of fabricating a light valve device, comprising the steps of: forming a substrate having stacked layers including a light-shielding thin film layer and an insulating film stacked in this order on a transparent support substrate; adhering a semiconductor single crystal material to the insulating film; polishing the semiconductor single crystal material to form a single crystalline semiconductor thin film on the insulating film; forming a light-shielding layer pattern by selectively etching the stacked layers; then forming a switching element comprised of a transistor having a channel region formed in the single crystalline semiconductor thin film and a main gate electrode covering the channel region, wherein the channel region is provided over the light-shielding pattern layer to prevent light incident from the transparent support substrate from illuminating the channel region to suppress a photo-induced leakage current in the channel region; forming a transparent electrode electrically connected to the switching element; providing an opposing substrate over the substrate at the side of the single crystalline semiconductor thin film; and interposing an electro-optical material layer between the substrate and the opposing substrate.