A liquid crystal display panel includes: a liquid crystal cell that has a liquid crystal layer; first and second linear polarizers arranged on an observer side and a back surface side of the liquid crystal cell; a first retardation layer arranged between the first linear polarizer and the liquid crystal layer; and a second retardation layer arranged between the first retardation layer and the second linear polarizer. The first and second linear polarizers and the first and second retardation layers are arranged so that at least one of following formulas (A) and (B) is satisfied:
(cos 2.sub.1).sup.2/sin 3/2(A)
(cos 2.sub.2).sup.2/sin 3/2(B) where a difference of retardation between the first retardation layer and the second retardation layer for light with a wavelength of 550 nm is [rad], an angle formed by an absorption axis of the first linear polarizer and a slow axis of the first retardation layer is .sub.1, and an angle formed by an absorption axis of the second linear polarizer and a slow axis of the second retardation layer is .sub.2.

Provided is a liquid crystal module being excellent in durability and manufacturing cost and exhibiting reduced variations in peak luminance that are caused depending on an azimuth angle during black display when the polar angle is large. The liquid crystal module includes: a liquid crystal panel including a first polarizer, a first substrate, a liquid crystal layer, an in-cell retardation layer (/4 plate of nx>ny=nz), a second substrate, an out-cell retardation layer (/4 plate of nx>nynz), and a second polarizer, from a back side toward an observation side; and a backlight. The backlight includes a first prism sheet including a first ridge line, and a second prism sheet provided on a back side from the first prism sheet and including a second ridge line orthogonal to the first ridge line. The first ridge line is parallel to an azimuth at which the liquid crystal panel has a maximized transmittance in an oblique direction during black display.

A see-through window display includes a display panel having a plurality of pixels and a drive circuit that applies a voltage according to input gray scale data to the plurality of pixels, in which the display panel includes a first substrate having a pixel electrode, a second substrate, a liquid crystal layer interposed between the first substrate and the second substrate, a first polarizer provided on the first substrate having a first polarization axis, and a second polarizer provided on the second substrate having a second polarization axis, and when a transmittance of each of the pixels when the drive circuit applies a minimum voltage to the pixel is set to TW and a transmittance of each of the pixels when the drive circuit applies a maximum voltage to the pixel is set to TB, the display panel has a normally white characteristic satisfying TW>TB.

The present disclosure discloses a privacy filter, a display panel, and a display device. The display panel includes a panel body, and a first polarizer, a dimming liquid crystal layer, and a second polarizer that are sequentially disposed on one side of the panel body. The dimming liquid crystal layer includes a plurality of polymer networks and a plurality of liquid crystal molecules distributed in the polymer networks, wherein the plurality of polymer networks are arranged in a first direction, the first direction tilts relative to a normal of the first polarizer, and an optical axis direction of the first polarizer is parallel to an optical axis direction of the second polarizer.

A composite film including a first polarizing film, at least one second polarizing film, and at least one first phase compensation film is provided. The first polarizing film has a first transmission axis. Each second polarizing film has a second transmission axis parallel to the first transmission axis. The at least one first phase compensation film is disposed between the first polarizing film and the at least one second polarizing film. Each first phase compensation film has a first optical axis. An orthographic projection of the first optical axis on the first polarizing film is parallel to an axial direction of the first transmission axis, and a first included angle between the first optical axis and the first polarizing film is greater than 0 degrees and less than 90 degrees. A display device is also provided.

The present application relates to a liquid crystal display panel and a liquid crystal display. The liquid crystal display panel includes a first polarizer and a second polarizer opposite to each other. A vertically aligned liquid crystal cell is disposed between the first polarizer and the second polarizer; the liquid crystal display panel further comprises: an optical biaxial compensation films. This disclosure unilaterally uses the optical biaxial compensation film to compensate the light leakage of the side view so as to maintain the contrast of the side view of the liquid crystal panel and reduce the thickness of the polarizer.

Polarization-based optical angle-filters disclosed herein can be engineered to transmit a prescribed amount of light as a function of incidence angle and azimuth. Such filters can transmit light without introducing artifacts, making them suitable for the image-path of an optical system. One example may include an angle-filter having an input circular polarizer, an analyzing circular polarizer, and a retarder positioned between the circular polarizers, the retarder having a thickness-direction retardation. The thickness-direction retardation of the retarder (R.sub.th) is selected to produce a prescribed angle-of-incidence dependent transmission function, and the circular polarizers reduce the amount of azimuth-dependence in the transmission function.

A display panel includes a liquid crystal layer, a negative-type C plate compensation layer, and a B plate compensation layer or an A plate compensation layer, and retardation values provided by the liquid crystal layer and the compensation layers are set to allow light perpendicular to a lateral transmittance angle, which is an angle formed by a transmissive axis of the upper polarizer with respect to a transmissive axis of the lower polarizer when viewed from a specific position on a lateral side, to be transmitted to the upper polarizer when the display panel displays a black color.

A reflective-type liquid crystal display device includes: a first substrate including a light-reflective first electrode; a second substrate including a light-transmissive second electrode; a liquid crystal layer that is provided between the first electrode and the second electrode and takes a generally vertical alignment during black display; a polarizing layer provided on a viewer side of the second substrate; and a first retardation layer, a second retardation layer and a third retardation layer that are arranged in this order from a side of the polarizing layer, wherein 40|322+21|50, 130|322+21|140, 220|322+21|230 or 310|322+21|320 is satisfied, where 1 denotes an angle formed between an absorption axis or a transmission axis of the polarizing layer and a slow axis of the first retardation layer, 2 an angle formed between the absorption axis or the transmission axis of the polarizing layer and the slow axis of second retardation layer, and 3 an angle formed between the absorption axis or the transmission axis of the polarizing layer and the slow axis of the third retardation layer.

A liquid crystal display panel includes: a liquid crystal cell that has a liquid crystal layer; first and second linear polarizers arranged on an observer side and a back surface side of the liquid crystal cell; a first retardation layer arranged between the first linear polarizer and the liquid crystal layer; and a second retardation layer arranged between the first retardation layer and the second linear polarizer. The first and second linear polarizers and the first and second retardation layers are arranged so that at least one of following formulas (A) and (B) is satisfied:

1/3(cos 2.sub.1).sup.2/sin 3/2(A)

1/3(cos 2.sub.2).sup.2/sin 3/2(B) where a difference of retardation between the first retardation layer and the second retardation layer for light with a wavelength of 550 nm is [rad], an angle formed by an absorption axis of the first linear polarizer and a slow axis of the first retardation layer is .sub.1, and an angle formed by an absorption axis of the second linear polarizer and a slow axis of the second retardation layer is .sub.2.