公开(公告)号：US20190294032A1

公开(公告)日：2019-09-26

申请号：US16318917

申请日：2017-06-16

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Toru HIRANO ,  Takanori AKETA ,  Koki OISHI

IPC: G03B21/20 ,  G03B21/16 ,  B32B3/10 ,  B32B7/12

Abstract: A color conversion element includes: a substrate, a phosphor layer disposed above one principal surface of the substrate, and a joining portion interposed between the substrate and the phosphor layer for joining the substrate and the phosphor layer using metal. The phosphor layer includes individual pieces that are sheet-shaped and planarly arranged. The individual pieces each include at least one type of phosphor. Also, the joining portion has a porous structure obtained by sintering metal nanoparticles.