A liquid crystal display device includes a first polarizer, a liquid crystal cell, and a second polarizer in this order from a viewing side, in which a first light absorption anisotropic layer is disposed on the viewing side of the liquid crystal cell, a second light absorption anisotropic layer is disposed on a non-viewing side of the liquid crystal cell, the first and second polarizers each have an absorption axis in a film surface, the absorption axis of the first polarizer is orthogonal to the absorption axis of the second polarizer, an angle θ1 between a transmittance central axis of the first anisotropic layer and a normal line of the film is in a range of 0° to 45°, and an angle θ2 between a transmittance central axis of the second anisotropic layer and a normal line of the film is in a range of 0° to 45°.

A phase difference compensation element, including: a transparent substrate; a first optical anisotropic layer that includes an inorganic material, and has a C-plate retardance; and a second optical anisotropic layer that includes an inorganic material, and includes an oblique angle vapor deposition film that does not have an O-plate retardance, wherein the phase difference compensation element including the first optical anisotropic layer and the second optical anisotropic layer in combination has a quasi-O-plate retardance.

Optical film stacks are described. More particularly, optical film stacks including a half-wave retardation layer are described. Achromatic half-wave retardation layers, including achromatic half-wave layers formed from a quarter-wave and a three-quarters-wave retardation layer, are described. Film stacks including reflective polarizers tuned to reduce wavelength dispersion of the half-wave retardation layer are also described.

Optical film stacks are described. More particularly, optical film stacks including a half-wave retardation layer are described. Achromatic half-wave retardation layers, including achromatic half-wave layers formed from a quarter-wave and a three-quarters-wave retardation layer, are described. Film stacks including reflective polarizers tuned to reduce wavelength dispersion of the half-wave retardation layer are also described.

The present disclosure provides a display device and an electronic equipment. The display device includes: a display module, the display module having a light emitting side; a phase retarder, the phase retarder is disposed on the light emitting side of the display module; wherein a range of a compensation value of the phase retarder is [λ/16, λ/4), (λ/4, 7λ/16], [9λ/16, 3λ/4) or (3λ/4, 15λ/λ/16], where λ is a wavelength of light emitted by the display module.

The present, invention provides a liquid crystal display device that can exhibit excellent retardation stability against heat and that can prevent reduction in contrast ratio due to scattering even when the liquid crystal display device includes a retardation layer formed by polymerization of a reactive monomer, and a method for producing a liquid crystal display device suitable for production of the liquid crystal display device. The liquid crystal display device of the present invention includes paired substrates and a liquid crystal layer provided between the paired substrates. At least one of the paired substrates includes a retardation layer formed from a polymer of at least one type of monomer. The at least one type of monomer includes a photo-aligning monomer that is to be aligned by polarized light.

A light modulation device is disclosed herein. In some embodiments, a light modulation device includes a first polymer film substrate, a second polymer film substrate, an active liquid crystal layer disposed between the first and second polymer film substrates, wherein the active liquid crystal layer is capable of switching between a first orientation state and a second orientation state different from the first orientation state under an applied voltage, the first and second polymer film substrates have an in-plane retardation of 4,000 nm or more for light having a wavelength of 550 nm, a ratio of an elongation (E1) in a first direction to an elongation (E2) in a second direction perpendicular to the first direction of 3 or more, and wherein an angle formed by the first directions of the first and second polymer film substrates is in a range of 0 degrees to 10 degrees.

The present application relates to a light modulation device and a use thereof. The present application can provide a light modulation device having both excellent mechanical properties and optical properties by applying a polymer film that is also optically anisotropic and mechanically anisotropic to a substrate.

An LCD module includes an LCD panel, and a polarizing plate formed on each of the upper and lower surfaces of the LCD panel. The polarizing plate includes a polarizer and a polyester film formed on at least one surface of the polarizer. The polyester film has a difference between the index of refraction in the x-axis direction and the index of refraction in the z-axis direction (nx−nz) of about 0.1 to about 0.18, where nx and nz are the indices of refraction in the x-axis and z-axis directions, respectively, at a wavelength of 550 nm. The LCD module has a CR 45° and a CR 135° of about 1.0% or greater.

A display device includes a liquid crystal display panel (3) and a backlight source (2), and further includes a plurality of bandpass filters (1) corresponding to respective pixel units of the liquid crystal display panel (3), the bandpass filters (1) being configured to perform narrowband filtering on the light emergent from the backlight source (2). By adopting the bandpass filters (1), the narrowband filtering on the red, green and blue light is realized by using a narrowband interference filtering method, such that the effect of improving the gamut of the display device is achieved and the high-gamut display is realized.