Patent · US Active

Optical laminate

US10690824B2 · kind B2 · utility

1Cited by

2References

8Claims

0Family size

Assignee

SUMITOMO CHEMICAL COMPANY, LIMITED · JP

Inventors

Shoichi Ozawa · Niihama, JP
Yosuke Ota · Toyama, JP
Daichi Fujimoto · Osaka, JP

Key dates

Filing date	Dec 27, 2016
Grant date	Jun 23, 2020
Priority date	—
Expiry date	Jun 21, 2037

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09K2323/059
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Provided is an optical laminate which has high absorption selectivity to short-wavelength visible light having wavelengths around 400 nm and hence high light fastness and can impart better display characteristics when used for a display device. The optical laminate comprises at least one polarizing plate and at least one pressure-sensitive adhesive layer and satisfying the following formulae (1) and (2): A(400)≥0.5 (1)A(420)/A(400)≤0.3 (2)

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.