US 11,943,943 B2
Detection device
Yasushi Kawata, Tokyo (JP)
Assigned to Japan Display Inc., Tokyo (JP)
Filed by Japan Display Inc., Tokyo (JP)
Filed on Aug. 25, 2021, as Appl. No. 17/411,268.
Application 17/411,268 is a continuation of application No. PCT/JP2020/000352, filed on Jan. 8, 2020.
Claims priority of application No. 2019-052564 (JP), filed on Mar. 20, 2019; and application No. 2019-168781 (JP), filed on Sep. 17, 2019.
Prior Publication US 2021/0384453 A1, Dec. 9, 2021
Int. Cl. H01L 51/44 (2006.01); G06V 40/13 (2022.01); H10K 19/20 (2023.01); H10K 30/40 (2023.01); H10K 30/81 (2023.01); H10K 39/32 (2023.01); H10K 30/00 (2023.01)
CPC H10K 39/32 (2023.02) [G06V 40/1318 (2022.01); H10K 19/20 (2023.02); H10K 30/40 (2023.02); H10K 30/81 (2023.02); H10K 30/451 (2023.02)] 6 Claims
OG exemplary drawing
 
1. A detection device comprising:
a substrate;
a plurality of detection electrodes arranged in a detection area of the substrate;
an organic semiconductor layer covering the detection electrodes;
a counter electrode provided above the organic semiconductor layer; and
a plurality of first buffer layers,
wherein
the organic semiconductor layer includes at least either of a first p-type semiconductor layer and a first n-type semiconductor layer, and an active layer,
the active layer is provided in each overlapping area overlapping a corresponding one of the detection electrodes, and has a structure in which a p-type semiconductor and an n-type semiconductor are mixed and coexist,
the first p-type semiconductor layer or the first n-type semiconductor layer is provided in a non-overlapping area not overlapping the detection electrode, and is provided between the adjacent active layers,
the first buffer layers are provided between the active layers and the detection electrodes, and are provided so as to be separated from one another on a per detection electrode basis, and
the first buffer layers each include a plurality of zinc oxide nanoparticles and a zinc acetate layer provided in a space among the zinc oxide nanoparticles.