公开(公告)号：US20190123254A1

公开(公告)日：2019-04-25

申请号：US16162656

申请日：2018-10-17

Applicant: KEIO UNIVERSITY ,  HAMAMATSU PHOTONICS K.K.

Inventor： Hideyuki MAKI ,  Motohiro SUYAMA ,  Takaaki NAGATA ,  Takeo FUJII

IPC: H01L33/64 ,  H01L33/36 ,  H01L33/00

CPC classification number: H01L33/641 ,  H01L33/0054 ,  H01L33/36 ,  H01L33/40 ,  H01L2933/0016 ,  H01L2933/0075

Abstract: A light-emitting device according to one embodiment includes: a substrate; a graphite thin film disposed on the substrate; and an electrode provided on a second surface of the graphite thin film on an edge portion of the graphite thin film, the second surface of the graphite thin film being opposite from a first surface of the graphite thin film, the first surface of the graphite thin film opposed to the substrate. A plurality of protrusions for supporting the graphite thin film is formed on a surface of the substrate opposed to the graphite thin film, at least over an entire region where the substrate and a portion of the graphite thin film other than the edge portion overlap each other when viewed along a thickness direction of the substrate.

公开(公告)号：US20200020519A1

公开(公告)日：2020-01-16

申请号：US16507251

申请日：2019-07-10

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Takaaki NAGATA ,  Takeo FUJII ,  Motohiro SUYAMA

IPC: H01K1/06 ,  H01K1/16

Abstract: A light-emitting device includes: a substrate having a groove extending in a first direction and a first surface and a second surface respectively arranged to sandwich the groove in a second direction; a first electrode provided on the first surface; a second electrode provided on the second surface; a graphite thin film provided on the first electrode and the second electrode and extending from the first electrode to the second electrode along the second direction in such a way as to be astride the groove; a third electrode provided on the graphite thin film in such a way as to be opposite the first electrode via the graphite thin film; and a fourth electrode provided on the graphite thin film in such a way as to be opposite the second electrode via the graphite thin film.