| http://www.w3.org/ns/prov#value | - However, in the case of adopting the a-Se film as the semiconductor film 12, a conductive film made of Al whose thermal expansion coefficient is around 24 (???10???6/??? C.) which is close to that of the a-Se film, or a conductive film made of an Al alloy including Al as a main component is desirable because the use of such semiconductor film offers an improves the bonding strength between the a-S
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