US 2021/0263205 A1 · POLYMER THIN FILMS HAVING HIGH OPTICAL ANISOTROPY

Abstract

A polymer thin film is characterized by a first in-plane refractive index (nx) along a first direction of the polymer thin film, a second in-plane refractive index (ny) along a second direction of the polymer thin film orthogonal to the first direction, and a third refractive index (nz) along a thickness direction substantially orthogonal to both the first direction and the second direction, where nx>nz>ny. Such a polymer thin film may exhibit one or more of (a) an in-plane birefringence of at least approximately 0.05, and (b) nx greater than approximately 1.7.

Claims20

Dependent claims

A polymer thin film comprising:

a first in-plane refractive index (nx) along a first direction of the polymer thin film;
a second in-plane refractive index (ny) along a second direction of the polymer thin film orthogonal to the first direction;
and
a third refractive index (nz) along a thickness direction substantially orthogonal to both the first direction and the second direction, where nx>nz>ny.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

16/984,233Filed 4 Aug 2020

Priority

26 Feb 2020

Published

26 Aug 2021

Term ends

Not estimatedThe source records don’t support an estimate.

Classification17 codes

G02B 5/305
Comprising multiple thin layers, e.g. multilayer stacks: including organic materials, e.g. polymeric layers
B29C 55/143
Successively: firstly parallel to the direction of feed and then transversely thereto
G02B 5/3083
Polarising elements: birefringent or phase retarding elements
B29C 55/005
Shaping by stretching, e.g. drawing through a die; Apparatus therefor: characterised by the choice of materials

Polymer thin films having high optical anisotropy

Life of this patent

Polymer thin films having high optical anisotropy

Life of this patent

Abstract

Claims20