公开(公告)号：US11561328B2

公开(公告)日：2023-01-24

申请号：US16270451

申请日：2019-02-07

Applicant: TOPPAN PRINTING CO., LTD.

Inventor： Hiroki Ichiba ,  Kei Tsuruzoe

IPC: G02B1/14 ,  G02B5/20 ,  G02B1/11 ,  G02B1/16 ,  B32B7/12 ,  B32B27/36 ,  F21V8/00

Abstract: A phosphor protection film for protecting phosphors contained in a phosphor layer. The phosphor protection film includes a functional layer, a bulking layer that has a single-layer structure or a laminated structure, and a first vapor deposited layer (gas barrier layer) that has gas barrier properties in this order from outside to inside. The clearance between the functional layer and the first vapor deposited layer in the thickness direction of the phosphor protection film is 45 to 280 μm.

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.