Patent ID: 11971626
Assignee: DAI NIPPON PRINTING CO., LTD.
Field: Surface technology, coating (Chemistry)
Classification: CPC C  G  B | IPC B  G

Claim 0:
1. A barrier film for a wavelength conversion sheet, comprising: a barrier layer; and a primer layer, wherein
the primer layer is configured to adhere the barrier film to a phosphor layer including a phosphor and a sealing resin, the primer layer comprising a cured product of a polyurethane-based resin composition, and
when a surface of an opposite side of the primer layer from the barrier layer is subjected to X-ray photoelectron spectroscopy to obtain a C1s spectrum, P2/P1 is 0.55 or more, where P1 is an area of a peak assigned to a C—C bond in the C1s spectrum and P2 is an area of a peak assigned to a C—O bond in the C1s spectrum.