公开(公告)号：US12074261B2

公开(公告)日：2024-08-27

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 ,  B32B7/023 ,  B32B37/14 ,  G02B1/11

CPC classification number: H01L33/502 ,  B32B7/023 ,  B32B37/14 ,  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.