Abstract:
The invention provides a broadband cholesteric liquid crystal film, a method for fabricating the same, a polarization device employing the same, and high light efficiency liquid crystal display employing the same. The cholesteric liquid crystal film is a single-layer liquid crystal material structure, and has a top surface and a bottom surface. Further, the cholesteric liquid crystal film includes a first region, a second region, and a third region, and the first region is adjacent to the top surface of the cholesteric liquid crystal film, the third region is adjacent to the bottom surface of the cholesteric liquid crystal film, and the second region is located between the first and third regions, and the average helical pitch P1 of the first region and the average helical pitch P3 of the third region are both larger than the average helical pitch P2 of the second region.
Abstract:
A wavelength converting composition is provided, including: a plurality of first cholesteric liquid crystal flakes (CLCFs); a plurality of first quantum dots; and a resin, wherein the first CLCFs and the first quantum dots are dispersed in the resin, and wherein when first light passes the wavelength converting composition, the first quantum dots are excited by the first light and emit second light having a wavelength different from a wavelength of the first light, and the second light is reflected by the first CLCFs a number of times to increase a gain. A wavelength converting structure, a luminescence film having the wavelength converting structure, and a backlit component having the wavelength converting composition are also provided.
Abstract:
A microbial carrier and a device for treating wastewater are provided. The microbial carrier includes a bacteriophilic material and a plurality of foam cells, wherein the foam cells are disposed in the bacteriophilic material. The bactericidal material is a reaction product of a composite, wherein the composition includes a hydrophobic polyvinyl alcohol and a cross-linking agent, wherein the surface energy of the hydrophobic polyvinyl alcohol is 30 mJ/m2 to 58 mJ/m2.
Abstract:
A wideband compound phase-retardation film including a half-wave phase-retardation film and a quarter-wave phase-retardation film with different reactive rod-like liquid crystal combination is provided. The half-wave phase-retardation film uses material having a birefringence of Δn1, and the quarter-wave phase-retardation film uses material having a birefringence of Δn2. The birefringence Δn1 is smaller than the birefringence Δn2. Furthermore, the birefringence dispersion Δn1(λ) is also smaller than Δn2(λ).
Abstract:
A wideband compensation stack film comprises a chiral-half-wave compensation film and a chiral-quarter-wave compensation film. The chiral-quarter-wave compensation film is directly in contact with the chiral half-wave compensation film. Along the contact surface, the first layer liquid crystal molecule of the chiral-quarter-wave compensation film is arranged in the last layer of liquid crystal molecule of the chiral-half-wave compensation film. The retardation values (R) and the optical axis (Z) of the stack films follow a linear relationship: R=aZ+b.
Abstract:
A display module includes a display panel and a reflective optical film. The display panel has a display surface. The reflective optical film is disposed on the display surface of the display panel. The reflective optical film includes a cholesteric liquid crystal layer and a first anti-glare layer. The first anti-glare layer is disposed between the display panel and the cholesteric liquid crystal layer.
Abstract:
The present invention provides an optical film with functions of light collimating, light polarization for brightness enhancement and limiting viewing angle and a method for preparing the same. The optical film includes a plurality of layers of a cholesteric liquid crystal film bound together via an optical adhesive and a quarter-wavelength retardation plate bound with the cholesteric liquid crystal film via the optical adhesive. Therein, at least one layer of the cholesteric liquid crystal film has a polarized separated wavelength range covering the wavelength range of visible light of three primary colors of red, green and blue.