Back to results
US 10,955,601 B2Granted
Optical film, method for producing optical film, and display device
AssigneeFUJIFILM Corporation
InventorsKunihiro Atsumi, Yukito Saito, Shinichi Morishima, Wataru Hoshino
Life of this patent
Estimating the term…
Abstract
An optical film includes a liquid crystal layer derived from a smectic phase, wherein an Nz factor of the liquid crystal layer is from 0.2 to 0.8. A display device that includes the optical film, and a method of producing an optical film is also provided.
Claims12
An optical film comprising a liquid crystal layer derived from a smectic phase,
- wherein an Nz factor of the liquid crystal layer is from 0.2 to 0.7, and
- wherein a retardation value Re(440) of the liquid crystal layer as measured at a wavelength of 440 nm, a retardation value Re(550) of the liquid crystal layer as measured at a wavelength of 550 nm, and a retardation value Re(630) of the liquid crystal layer as measured at a wavelength of 630 nm satisfy the following relationships:
- Re(440)<Re(550)×0.9
- Re(630)>Re(550).
1 more element
An optical film comprising a liquid crystal layer derived from a smectic phase,
- wherein an Nz factor of the liquid crystal layer is from 0.2 to 0.7
- wherein the optical film is a λ/4 plate, and a retardation value Re(550) of the liquid crystal layer as measured at a wavelength of 550 nm satisfies the following relationship:
- 120 nm≤Re(550)≤150 nm.
An optical film comprising a liquid crystal layer derived from a smectic phase,
- wherein an Nz factor of the liquid crystal layer is from 0.2 to 0.7
- wherein the optical film is a λ/2 plate, and a retardation value Re(550) of the liquid crystal layer as measured at a wavelength of 550 nm satisfies the following relationship:
- 200 nm≤Re(550)≤320 nm.
Dependencies are inferred from the claim text.