Patent ID: 9202962
Filing Date: 2015-12-01
Classification: H01L

Abstract:
1. A fabrication method of a solid state imaging device which a circuit unit on a substrate, a lower electrode layer, a compound semiconductor thin film of chalcopyrite structure that functions as an optical absorption layer, and an optical transparent electrode layer are laminated to be composed, the fabrication method comprising: forming the circuit unit on the substrate; forming the lower electrode layer on the substrate on which the circuit unit is formed; patterning the lower electrode layer by photo lithography, and separating for every pixel, forming the compound semiconductor thin film of the chalcopyrite structure all over an element region; and patterning the compound semiconductor thin film of the chalcopyrite structure by photo lithography, and separating for every pixel according to the separated underlying lower electrode layer, wherein patterning the compound semiconductor thin film of the chalcopyrite structure includes: