公开(公告)号：US20210249568A1

公开(公告)日：2021-08-12

申请号：US17239198

申请日：2021-04-23

Applicant: TOPPAN PRINTING CO., LTD.

Inventor： Hiroki ICHIBA ,  Satoshi MARUYAMA ,  Masato KUROKAWA ,  Yasuhiko SAITO

IPC: H01L33/50 ,  B32B37/14 ,  B32B7/023 ,  G02B1/11

Abstract: A production method for a wavelength conversion sheet, including: a bonding step of bonding a multilayer film and a release film together to obtain a phosphor protective film, the multilayer film including a barrier film, the release film being releasable from the multilayer film; a phosphor layer formation step of forming a phosphor layer containing phosphors on a surface of the multilayer film of the phosphor protective film to obtain a wavelength conversion sheet with the release film; and a release step of releasing the release film from the wavelength conversion sheet with the release film.