Patent ID: 9167695
Filing Date: 2015-10-20
Classification: H01L,H05K

Abstract:
1. An electronic device module comprising: a first substrate having a first wiring layer and a first alignment mark, the first alignment mark being transparent in a visible region of the electromagnetic spectrum; and a second substrate facing a part of the first substrate and having a second wiring layer and a second alignment mark that is opaque in the visible region of the electromagnetic spectrum and faces the first alignment mark, the second substrate being placed on the first substrate disposed on an X-Y plane, wherein the first alignment mark is configured to, from a second substrate side, be visible by illumination in a Z direction and be invisible by illumination in an inclined direction relative to the Z direction, and wherein the second alignment mark is configured to, from the second substrate side, be visible by illumination in the inclined direction and be invisible by illumination in the Z direction.