The present invention provides a display panel in which deterioration of color tone may be suppressed regardless of the reflectance of the display element. A display panel including a display element (A), a retardation layer (B) positioned upon the light emission surface side of the display element, and a polarizer (C) positioned upon the light emission surface side of the retardation layer, in which the retardation layer (B) has a ?/4 retardation layer (B1), and the in-plane retardation of the ?/4 retardation layer (B1) satisfies the following Condition 1: <Condition 1> The spectral reflectance of the display element is measured by an SCI method, the average reflectance at wavelengths over the range of 400 nm or more and less than 550 nm is obtained as R.sub.1, the average reflectance at wavelengths over the range of 550 nm or more and less than 700 nm is obtained as R.sub.2, and when the value of R.sub.1/R.sub.2 is calculated and obtained as x, the in-plane retardation of the ?/4 retardation layer falls within the range of ?4.6002x+119.24 nm or more and ?4.6002x+129.24 nm or less.

Shown is a method for producing a liquid crystal capsule having a particle diameter of 30 to 150 nanometers, and a method for producing a liquid crystal capsule without using a homogenizer. The disclosure concerns a method for producing a liquid crystal capsule, including a step of preparing an emulsion by performing phase inversion emulsification of a mixed material obtained by mixing a liquid crystal composition, a monomer, a surfactant, and a polymerization initiator; and a step of producing a liquid crystal capsule by applying a coacervation method to the emulsion. The disclosure also concerns a liquid crystal capsule having a liquid crystal composition, a surfactant and a capsule wall, wherein the capsule wall has a closed curved shape, the liquid crystal composition and a hydrophobic moiety of the surfactant are arranged inside the capsule wall, and a hydrophilic moiety of the surfactant is arranged outside the capsule wall.

The present invention relates to a temperature-controlled dimming film with a function of shielding near-infrared light, which comprises a polymer network skeleton and liquid crystal molecules, wherein the polymer network skeleton consists of a polymer-dispersed liquid crystal network structure and a polymer-stabilized liquid crystal network structure and comprises a polymer matrix with pores inside which polymer networks are vertically aligned; and the liquid crystal molecules are dispersed in the polymer network skeleton and have smectic (SmA)-cholesteric (N*) phase transition. Between the skeleton and the liquid crystal molecules, nanoparticles, having absorption at 800-3000 nm, are dispersed. In the invention, a stepwise polymerization method is utilized to construct a PD&SLC network structure between two substrates, which greatly improve the bonding strength between the two substrates and the heat insulation performance of the temperature-controlled liquid crystal dimming film.

Provided is a liquid crystal composite that is suitable for dimming and includes a liquid crystal composition satisfying at least one of characteristics such as a high maximum temperature, a low minimum temperature, a small viscosity, a large optical anisotropy and a large negative dielectric anisotropy or being suitably balanced between at least two of these characteristics, and a liquid crystal dimming device including the liquid crystal composite, where the liquid crystal composite includes a polymer and a liquid crystal composition including a specific compound having a large negative dielectric anisotropy, and the liquid crystal composite may further include a specific compound having a high maximum temperature or a low minimum temperature.

A polymer dispersed liquid crystal film for vehicles includes an electrode unit, a first electrode provided on the electrode unit, a polymer layer provided between the electrode unit and the first electrode, and a plurality of liquid crystal molecules dispersed in the polymer layer. The electrode unit includes a resin layer and a mesh-type second electrode inserted into the resin layer. The upper surface of the second electrode is exposed to the outside of the resin layer.

Described herein are reverse-mode polymer dispersed liquid crystal (PDLC) compositions with a plurality of domains. In addition, selectively dimmable reverse-mode PDLC elements and devices using the aforementioned compositions are also described, which are transparent when no voltage is applied and opaque when a voltage is applied.

Disclosed is a trans-PDLC liquid crystal material composition, including a vertical alignment agent, a liquid crystal material, and an acrylic monomer. Molecules of the vertical alignment agent include polar groups and non-polar groups. The vertical alignment agent can reduce surface energy of liquid crystal molecules in a polymer matrix and increase contact angle, so that the liquid crystal molecules can be arranged in a vertical way.

A method for preparing an intelligent display film having a switchable viewing angle and a composite film containing the display film includes: mixing liquid crystal and a photopolymerizable monomer according to certain percentage content, wherein the ratio of raw materials is selected according to the refractive index matching ability between a conductive film and a polymer-dispersed liquid crystal layer as well as the characteristics of material components, and wherein the percentage content of the liquid crystal is 30-60%, the percentage content of the photopolymerizable monomer is 38-70%, the percentage content of a photoinitiator is 0.1-3.5%, the percentage content of a spacer is 0.1-5%; stirring the liquid crystal, the photopolymerizable monomer, the photoinitiator and the spacer evenly at room temperature, pressing the mixed material between two indium tin oxide-coated conductive films by using a rolling process to form a thin layer, and irradiating the thin layer for 5-10 minutes by using ultraviolet light.

Disclosed is a polymer dispersed liquid crystal (PDLC) glass construction which is suitable for use in automotive applications, and a method for forming a PDLC glass construction suitable for use in automotive applications. Exemplary embodiments of a PDLC glass construction include at least one darkened layer on a top side of a PDLC film, and at least one darkened layer on a bottom side of the PDLC film, for reducing visibility of an opaque PDLC material through the PDLC glass construction while reducing the transmission of visible light and/or energy through the PDLC glass construction. Exemplary embodiments of a PDLC glass construction may include additional interlayers such as polymer films, infrared reflecting (IR) coatings/layers, paint(s), low-emissivity (low-E) coatings, ultraviolet (UV) blocking materials, and/or anti-condensation layers.

A system comprising: a nematic liquid crystal, and at least one interface in contact with the nematic liquid crystal, wherein the interface comprises a first interface region on one side of the nematic liquid crystal and a second interface region on another side of the nematic liquid crystal, the interface comprising nucleation sites to form defect lines in the nematic liquid crystal extending across the nematic liquid crystal from the first interface region to the second interface region.