US 11,874,165 B2
Detection device
Hiroki Sugiyama, Tokyo (JP); Takahiro Shoji, Tokyo (JP); and Kaoru Taketa, Tokyo (JP)
Assigned to Japan Display Inc., Tokyo (JP)
Filed by Japan Display Inc., Tokyo (JP)
Filed on May 10, 2023, as Appl. No. 18/195,634.
Claims priority of application No. 2022-079927 (JP), filed on May 16, 2022.
Prior Publication US 2023/0366733 A1, Nov. 16, 2023
Int. Cl. G01J 1/44 (2006.01)
CPC G01J 1/44 (2013.01) [G01J 2001/446 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A detection device comprising:
a substrate;
a photodiode in which a lower electrode, a semiconductor layer, and an upper electrode are stacked on the substrate in the order as listed;
a transistor provided in the photodiode; and
an insulating layer provided between layers of the transistor and the photodiode, wherein
the insulating layer has a contact hole provided in a central portion of the photodiode in plan view,
the lower electrode of the photodiode is provided on the insulating layer, is provided continuously in an area overlapping the contact hole, and is electrically coupled to the transistor at a bottom of the contact hole, and
a first opening is provided in an area of the upper electrode that overlaps the contact hole.