The present invention discloses a display panel and a manufacturing method thereof. The display panel includes a plurality of liquid crystal cells, each of the plurality of liquid crystal cells includes cholesteric liquid crystals, and a chiral rotation direction of the cholesteric liquid crystals in one of the plurality of liquid crystal cells is opposite to a chiral rotation direction of the cholesteric liquid crystals in its adjacent ones of the liquid crystal cells, so that the cholesteric liquid crystals films with different rotation directions are designed between adjacent pixels, and one of any two adjacent pixels allows light to pass through, and another one of the two adjacent pixels blocks the light from passing through and reflects the light back into the display device, thereby achieving an object of reducing crosstalk.

The present invention provides a display device that is excellent in designability and allows a reflection color in the non-display state to be less likely to appear differently at different viewing positions. The display device includes, in the following order: a display panel capable of switching between a display mode of emitting display light and a non-display mode of not emitting display light; a /4 retardation layer; a circularly polarized light ray reflection layer; and a light scattering layer capable of switching between a light scattering mode of scattering incident light and a light transmitting mode of transmitting incident light. The circularly polarized light ray reflection layer preferably contains a cholesteric liquid crystal.

Provided are an optical laminate in which a large diffraction angle can be obtained, a light guide element, and an AR display device. The optical laminate includes, in the following order: a first optically-anisotropic layer that is formed of a composition including a liquid crystal compound and has a liquid crystal alignment pattern in which a direction of an optical axis derived from the liquid crystal compound changes while continuously rotating in at least one in-plane direction; a cholesteric liquid crystal layer that is obtained by immobilizing a cholesteric liquid crystalline phase; and a second optically-anisotropic layer that is formed of a composition including a liquid crystal compound and has a liquid crystal alignment pattern in which a direction of an optical axis derived from the liquid crystal compound continuously rotates in at least one in-plane direction, in which in the first optically-anisotropic layer and the second optically-anisotropic layer, the one in-plane directions in which the direction of the optical axis derived from the liquid crystal compound continuously rotates are the same, and rotation directions of the direction of the optical axis derived from the liquid crystal compound in the one in-plane direction are the same.

An optical layered body comprising: a polarized light separation layer including a reflective linear polarizer; a first phase difference layer, and a first display layer containing a resin having cholesteric regularity, in this order; an average degree of polarization of the polarized light separation layer at a wavelength of 400 nm to 680 nm being 0.50 or more.

Provide are an optical element that can improve a utilization efficiency of light while increasing an optical path length, an image display unit, and a head-mounted display. The optical element includes, in the following order: a first absorptive linearly polarizing plate; a first reflective linearly polarizing plate; a first retardation plate; a partially reflecting mirror; a second retardation plate; and a second reflective linearly polarizing plate, in which a turning direction of circularly polarized light that is reflected from the first reflective linearly polarizing plate in a case where light transmits through the first retardation plate and is incident into the first reflective linearly polarizing plate is opposite to a turning direction of circularly polarized light that is reflected from the second reflective linearly polarizing plate in a case where light transmits through the second retardation plate and is incident into the second reflective linearly polarizing plate.

A half mirror includes an observation surface, a molded resin layer, and a polarization reflection plate in this order, at least one high-Re retardation film is included between the observation surface and the polarization reflection plate, a total front phase difference of the high-Re retardation film is 3,000 nm or greater, and a first high-Re retardation film is included as the high-Re retardation film between the observation surface and the molded resin layer.

A liquid crystal cured film includes a liquid crystal cured layer formed of a cured product of a liquid crystal composition containing a polymerizable liquid crystal compound capable of expressing birefringence with reverse wavelength distribution, the polymerizable liquid crystal compound containing an ethylenically unsaturated bond and an aromatic ring. The film satisfies 1.00<X(S)/X(A), where X(S) represents a peak ratio X of one surface of the liquid crystal cured layer; X(A) is a peak ratio X of the other surface of the liquid crystal cured layer; the peak ratio X is a ratio represented by X=I(1)/I(2); I(1) is a peak strength derived from in-plane deformation vibration of the ethylenically unsaturated bond in measurement of infrared total reflection-absorption spectrum; and I(2) is a peak strength derived from stretching vibration of an unsaturated bond of the aromatic ring in measurement of infrared total reflection-absorption spectrum.

An object is to provide: a transparent screen having high transparency in which a hot spot caused by transmitted light can be reduced; and an image display system in which visibility of a screen is excellent and a hot spot is reduced by using the transparent screen. The object is achieved by the transparent screen including: a dot array in which dots obtained by immobilizing a cholesteric liquid crystalline phase are two-dimensionally arranged; and a layer that is obtained by immobilizing a cholesteric liquid crystalline phase.

A cholesteric liquid crystal reflective polarizing plate includes a cholesteric liquid crystal layer and a /4 compensation layer disposed on the cholesteric liquid crystal layer. The cholesteric liquid crystal layer includes a first left-handed circularly polarizing portion which extends in a first direction that include a left-handed cholesteric liquid crystal material, and a first right-handed circularly polarizing portion which extends in the first direction adjacent to first left-handed circularly polarizing portion and that includes a right-handed cholesteric liquid crystal material. The /4 compensation layer includes a first /4 compensation pattern which extends in the first direction and overlapping the first left-handed circularly polarizing portion, and a second /4 compensation pattern which extends in the first direction adjacent to the first /4 compensation pattern and overlaps the first right-handed circularly polarizing portion. The first /4 compensation pattern and the second /4 compensation pattern have slow axes perpendicular to each other.

According to the invention, there is provided a mirror with an image display function including, in this order: an image display device; a wavelength plate; a circular polarization reflection layer; and a front surface plate made of glass or plastic, in which the circular polarization reflection layer includes a cholesteric liquid crystal layer, and the cholesteric liquid crystal layer has a central wavelength of selective reflection in a visible light region. The mirror with an image display function of the invention is capable of displaying a bright image.