Industrial Technology Research Institute

Mei-Chih Peng

Hui-Lung Kuo

Pin-Chen Chen

Pao-Ju Hsieh

Yi-Ping Hsieh

Yi-Chun Liu

Yi-Chang Du

Ying-Jui Lin

Cheng-Chung Lee

Chen-Pang Kung

Mei-Rurng Tseng

Chih-Ho Chiu

Jui-Fa Chang

Kuan-Foo Chang

Chin-Kai Chang

Sheng-Wen Lin

Ting-Ting Chang

Shu-Hsing Lee

Yi-Ying Lai

Cheng-Chin Chang

Provided are a light color conversion material and a light color conversion ink. The light color conversion material includes a quantum dot and a cross-linkable cholesteric liquid crystal material. The cross-linkable cholesteric liquid crystal material encapsulates the quantum dot. The cross-linkable cholesteric liquid crystal material has Bragg diffraction characteristic after cross-linking, and blue light with a wavelength between 400 nm and 480 nm may be reflected by the cross-linked cholesteric liquid crystal material and transmitted through the cross-linked cholesteric liquid crystal material at the same time.

Light color conversion material and light color conversion ink

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/mto 58 mJ/m.

Microbial carrier and device for treating wastewater

The present disclosure provides an enhanced wavelength converting structure. The enhanced wavelength converting structure includes a first crosslinked cholesteric liquid crystal layer and a plurality of first quantum dots dispersed in the first crosslinked cholesteric liquid crystal layer. When a first light is incident into the enhanced wavelength converting structure, the plurality of first quantum dots are excited and emit a second light of a wavelength different from a wavelength of the first light, and the second light is toned up via multiple reflections in the first crosslinked cholesteric liquid crystal layer. The present disclosure further provides a luminescent film and a display backlighting unit.

Enhanced wavelength converting structure

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.

Wideband compensation stack film and optical element using the same

A touch sensing film structure including a touch-sensitive device layer, a water/oxygen barrier layer and a flexible substrate is provided. The touch-sensitive device layer has a first surface and a second surface opposite to the first surface. The water/oxygen barrier layer is formed on the first surface or the second surface or integrated with the touch-sensitive device layer to form a multi-function layer. The flexible substrate can stack with the water/oxygen barrier layer and the touch-sensitive device layer, or stack with the multi-function layer.

Touch sensing film structure

A brightness enhanced self-luminous type display including a self-luminous display panel and a brightness enhancement stacked layer is provided. The self-luminous display panel includes pixels arranged in array, wherein each pixel includes light-emitting sub-pixels displaying different colors. The brightness enhancement stacked layer is disposed on the self-luminous display panel. The brightness enhancement stacked layer includes an absorptive polarizer layer, a phase retardation layer and a reflective polarizer layer. The reflective polarizer layer is between the self-luminous display panel and the phase retardation layer. The phase retardation layer is between the absorptive polarizer layer and the reflective polarizer layer. The reflective polarizer layer includes reflective polarizer blocks arranged in array. Each reflective polarizer block is disposed over one of the light-emitting sub-pixels correspondingly, and a wavelength of maximum intensity of each light-emitting sub-pixel is respectively within a wavelength band of light effectively reflected and polarized by the corresponding reflective polarizer block.

Brightness enhanced self-luminous display

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 Pof the first region and the average helical pitch Pof the third region are both larger than the average helical pitch Pof the second region.

Broadband cholesteric liquid crystal film, method for fabricating the same, polarization device, and high light efficiency liquid crystal display employing the same

A light efficiency enhancing optical device is disclosed, including a cholesteric liquid crystal film, a quarter wave plate disposed on a light out-going surface of the cholesteric liquid crystal film and an optical compensating film disposed on a light out-going surface of the quarter wave plate, wherein the optical compensating film includes a positive birefringence C-plate, and a composite optical compensating film with combination of the optical compensating film and the quarter wave plate has in-plane phase retardation Rof 100 nm&#x2dc;170 nm and out-of-plane phase retardation Rof 0 nm&#x2dc;400 nm.

Light efficiency enhancing optical devices

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.

Optical film

A low color shift polarizer assembly is provided, comprising a cholesteric liquid crystal film with a plurality of very tiny grooves which are irregularly dispersed on a surface of the cholesteric liquid crystal film. The selective reflective wavelength range of the cholesteric liquid crystal film has a long wavelength boundary &#x2267;700 nm and a short wavelength boundary &#x2266;420 nm. A quarter wavelength retardation plate can be disposed on the cholesteric liquid crystal film to build up the final low color shift polarizer assembly. The polarizer assembly can be combined with a backlight unit and further with a liquid crystal display to provide low color shift at large viewing angles and high brightness.

Low color shift polarizer assembly, and back light units and liquid crystal displays containing the same

A polarizer-alignment dual function film. The film comprising an optically anisotropic material layer having a plurality of strips integrally formed thereon. The strips provide an alignment function for aligning the liquid crystal molecules while the optically anisotropic material provides a polarization function such that the two functions can be integrated into a single-layered film.

Polarizer-alignment dual function film, fabrication method thereof and LCD containing the same

A method for making an optical device comprises steps of: 1) Providing a substrate, a polymerizable liquid crystal material having a plurality of liquid crystal molecules, and a mold having rows of trenches; 2) Imprinting the polymerizable liquid crystal material on said substrate by the mold; 3) Proceeding a cross-linking process to cure the liquid crystal material so as to have long axes of the liquid crystal molecules be aligned along the rows of trenches. The optical device made from the present method conforms to an A-plate type retardation plate. Moreover, the optical device is capable of aligning liquid crystal molecules adjacent to it.

Growing community of inventors

Taoyuan County, Taiwan

Mei-Chih Peng