Patent · US Active

Antiglare light diffusing member and display having antiglare light diffusing member

US7815322B2 · kind B2 · utility

2Cited by

6References

12Claims

0Family size

Assignee

TOPPAN PRINTING CO., LTD. · JP

Inventors

Toru Ookubo · Tokyo, JP
Tomo Yoshinari · Tokyo, JP
Kae Takahashi · Tokyo, JP
Jun Arao · Tokyo, JP

Key dates

Filing date	Jun 30, 2009
Grant date	Oct 19, 2010
Priority date	—
Expiry date	Jun 30, 2029

Classification

Technology area (CPC G)Physics
CPC primaryG02B5/0268
WIPO fieldOptics
WIPO sectorInstruments

Abstract

The purpose is to provide an antiglare light diffusing member that can satisfy both of external light reflection preventiveness and good contrast when being used for a display. The antiglare light diffusing member is made to be an antiglare light diffusing member having an antiglare light diffusing layer including a binder matrix and particles on a transparent base material, wherein the two types of arithmetical mean roughness (Ra1, Ra2) of the antiglare light diffusing layer defined by JIS-B0601-1994 are in the following range: Ra1 is in the range of 0.008-0.020 μm when cutoff wavelength λc is 0.008 mm; and Ra2 is less than 0.200 μm when cutoff wavelength λc is 0.8 mm.

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