Toppan Printing Co., Ltd.

Hiroki Ichiba

Masato Kurokawa

Satoshi Maruyama

Koji Murata

Yasuhiko Saito

Kei Tsuruzoe

Kengo Ozono

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.

Phosphor protective film, wavelength conversion sheet with release film, wavelength conversion sheet, and production method for wavelength conversion sheet

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 &#x3bc;m.

Phosphor protection film, wavelength conversion sheet, and light-emitting unit

An optical film including a first film substrate and a coating layer formed on the first film substrate. The coating layer of this optical film contains a binder resin and fine particles with an average size of 0.5 &#x3bc;m or more and 10.0 &#x3bc;m or less and a standard deviation in size that is less than &#xbd; of the average size.

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Tokyo, Japan

Hiroki Ichiba