Patent ID: 9035470
Filing Date: 2015-05-19
Classification: H01L

Abstract:
1. A substrate comprising: a first base member having a first flat surface; a first wiring provided in the first base member; an electrode array provided on the first flat surface, having a plurality of electrodes arranged two-dimensionally in a planar view; a second base member having a second flat surface, the second flat surface facing to the first flat surface and located in predetermined distance from the first flat surface; and a second wiring provided in the second base member, wherein a first electrodes of the plurality of electrodes are located on a central portion in the planar view, wherein each of the first electrodes is electrically connected between the first wiring and the second wiring, wherein a second electrodes of the plurality of electrodes are located on an incremental region, wherein the incremental region is provided around the central portion in the planar view, wherein a height of the second electrodes gradually increase as approaching toward the central portion, wherein a height of a part of the second electrodes is smaller than the predetermined distance, wherein the part of the second electrodes is electrically insulated from the second wiring, wherein a third electrodes are provided on the first flat surface, which are arranged in a boundary region, wherein the boundary region is located along an edge of the first base member, and wherein a height of the third electrodes is equal to or smaller than the height of the second electrodes.