US 12,379,628 B2
Color conversion film, method for manufacturing color conversion film, backlight unit, and liquid crystal display device
Takashi Aridomi, Shizuoka (JP)
Assigned to FUJIFILM CORPORATION, Tokyo (JP)
Filed by FUJIFILM CORPORATION, Tokyo (JP)
Filed on Jun. 15, 2023, as Appl. No. 18/335,142.
Application 18/335,142 is a continuation of application No. PCT/JP2021/039170, filed on Oct. 22, 2021.
Claims priority of application No. 2020-210835 (JP), filed on Dec. 18, 2020.
Prior Publication US 2023/0341728 A1, Oct. 26, 2023
Int. Cl. G02F 1/1335 (2006.01); C09K 11/06 (2006.01); G02F 1/1333 (2006.01)
CPC G02F 1/133614 (2021.01) [C09K 11/06 (2013.01); G02F 1/133311 (2021.01); G02F 1/133317 (2021.01); G02F 1/133524 (2013.01); C09K 2211/1007 (2013.01); C09K 2211/1018 (2013.01); G02F 2201/50 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A color conversion film comprising, in the following order:
a support;
a first color conversion layer containing an organic light-emitting material which emits, by an excitation light having a wavelength of 400 nm or more and less than 500 nm, light observed in a region having a peak wavelength of 500 nm or more and less than 580 nm;
an interlayer; and
a second color conversion layer containing an organic light-emitting material which emits, by at least one of the excitation light having a wavelength of 400 nm or more and less than 500 nm or the light emitted from the organic light-emitting material, light observed in a region having a peak wavelength of 580 nm or more and less than 750 nm, wherein;
the interlayer contains a polyvinylpyrrolidone resin and a polyvinyl alcohol resin, and a ratio of a content of the polyvinylpyrrolidone resin to a content of the polyvinyl alcohol resin in the interlayer is 1/99 to 75/25 on a mass basis; or
the interlayer contains a polyvinylpyrrolidone resin, a modified polyvinyl alcohol resin having a crosslinkable group, and an unmodified polyvinyl alcohol resin, and a ratio of a content of the modified polyvinyl alcohol resin having a crosslinkable group to a content of the unmodified polyvinyl alcohol resin in the interlayer is 1/99 to 30/70 on a mass basis.