OPTICAL FILM AND DISPLAY DEVICE

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United States of America Patent

APP PUB NO 20230358932A1
SERIAL NO

18354568

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An optical film includes a transparent substrate having opposite first and second surfaces, a colored layer formed to face the first surface of the substrate, and an optical function layer. A colorant in the colored layer contains at least one of a first coloring material having a maximum absorption wavelength in a range of 470 to 530 nm and an absorption spectral half width of 15 to 45 nm, a second coloring material having a maximum absorption wavelength in a range of 560 to 620 nm and an absorption spectral half width of 15 to 55 nm, and a third coloring material having the lowest transmittance in a wavelength range of 400 to 800 nm is in a range of 650 to 800 nm. A transmittance in one of the absorption wavelength bands of the colorant is 1% or more and less than 50%, and ΔE * ab.

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Patent Owner(s)

Patent OwnerAddress
TOPPAN INC5-1 TAITO 1-CHOME TAITO-KU TOKYO 110-0016

International Classification(s)

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  • 2023 Application Filing Year
  • G02B Class
  • 6885 Applications Filed
  • 1930 Patents Issued To-Date
  • 28.04 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances2023202420250255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
FUTAMATA, Kai Tokyo, JP 10 2
ISHIMARU, Yoshiko Tokyo, JP 18 35

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Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges6751153018501 - 1011 - 2021 - 30050010001500200025003000350040004500500055006000650070007500

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