IDiyas

For the Inventor, By the Inventor

The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9690022 B1

PDFFull Text
Date of Patent:
Jun. 27, 2017

Filed:

Oct. 30, 2013

Liquid crystal composition, phase difference plate, image display device, and method for controlling wavelength dispersion in optically anisotropic layer

Applicant:

Zeon Corporation, Tokyo, JP;

Inventor:

Masashi Aimatsu, Tokyo, JP;

Assignee:

ZEON CORPORATION, Tokyo, JP;

Attorney:

Oliff PLC

Primary Examiner:

Shean C Wu

Int. Cl.
CPC ...
C09K 19/38 (2006.01); G02B 5/30 (2006.01); G02F 1/1335 (2006.01); G02F 1/1337 (2006.01); C09K 19/54 (2006.01); C09K 19/02 (2006.01); C09K 19/22 (2006.01); C09K 19/24 (2006.01); C09K 19/30 (2006.01); C09K 19/32 (2006.01); C09K 19/34 (2006.01); C09K 19/04 (2006.01); C09K 19/20 (2006.01);
U.S. Cl.
CPC ...
G02B 5/3016 (2013.01); C09K 19/02 (2013.01); C09K 19/22 (2013.01); C09K 19/24 (2013.01); C09K 19/3068 (2013.01); C09K 19/322 (2013.01); C09K 19/3497 (2013.01); C09K 19/38 (2013.01); C09K 19/3861 (2013.01); C09K 19/3876 (2013.01); G02B 5/3083 (2013.01); G02F 1/1337 (2013.01); G02F 1/133528 (2013.01); C09K 2019/0448 (2013.01); C09K 2019/2078 (2013.01);
Abstract

Liquid crystal composition containing polymerizable liquid crystal compound with reverse wavelength dispersion and one additive-monomer-A and additive-monomer-B, wherein: liquid crystal compound includes (in molecule), a main chain mesogen and side chain mesogen, optical axis of the main chain mesogen and optical axis of the side chain mesogen in different directions when compound is uniformly oriented, reversing wavelength dispersion property of birefringence; when the additive-monomer is in liquid crystal compound, the additive-monomer-A satisfies Expression(i); the additive-monomer-B satisfies Expression(ii) within wavelength range λ=380 nm-780 nm: ne>nea and no<noa Expression(i), ne<neb and no>nob Expression(ii) (ne is a refractive index of liquid crystal compound in slow-axis-direction, no is a refractive index of liquid crystal compound in fast-axis-direction, nea and noa are refractive indices of the additive-monomer-A in ne and no direction when dispersed in liquid crystal compound, neb and neo are refractive indices of additive-monomer-B in ne and no direction when dispersed in liquid crystal compound).

Find Patent Forward Citations

Loading…