| http://www.w3.org/ns/prov#value | - gth of the bottom to form a groove for attaining non-conduction between the lower end of the light receiving portion and the lower end of the reinforcing portion, the step of filling the recessed portion including the groove with an insulating material, the step of forming a contact hole in the insulating material so that the contact hole vertically extends and connects to the lower end of the lig
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