Patents by Inventor Pao-Ju Hsieh
Pao-Ju Hsieh has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240201529Abstract: A display panel including a first substrate, a second substrate, and a display medium layer is provided. The second substrate is disposed opposite to the first substrate. The display medium layer is disposed between the first substrate and the second substrate. At least one of the first substrate and the second substrate includes a plastic base and a support layer, and the plastic base is disposed between the support layer and the display medium layer. A thickness of the support layer ranges from 0.3 mm to 3 mm.Type: ApplicationFiled: March 29, 2023Publication date: June 20, 2024Applicant: Industrial Technology Research InstituteInventors: Pao-Ju Hsieh, Chyi-Ming Leu, Tzong-Ming Lee, Yu-Tsung Chiu
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Patent number: 12006461Abstract: 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.Type: GrantFiled: May 11, 2022Date of Patent: June 11, 2024Assignee: Industrial Technology Research InstituteInventors: Pao-Ju Hsieh, Mei-Chih Peng
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Publication number: 20230212459Abstract: 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.Type: ApplicationFiled: May 11, 2022Publication date: July 6, 2023Applicant: Industrial Technology Research InstituteInventors: Pao-Ju Hsieh, Mei-Chih Peng
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Patent number: 10501688Abstract: 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.Type: GrantFiled: December 21, 2015Date of Patent: December 10, 2019Assignee: Industrial Technology Research InstituteInventors: Yi-Chun Liu, Pao-Ju Hsieh, Mei-Chih Peng
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Patent number: 10394080Abstract: 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.Type: GrantFiled: December 28, 2017Date of Patent: August 27, 2019Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Pao-Ju Hsieh, Mei-Chih Peng
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Publication number: 20190204687Abstract: 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.Type: ApplicationFiled: December 28, 2017Publication date: July 4, 2019Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Pao-Ju HSIEH, Mei-Chih PENG
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Publication number: 20170168205Abstract: 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 ?n1, and the quarter-wave phase-retardation film uses material having a birefringence of ?n2. The birefringence ?n1 is smaller than the birefringence ?n2. Furthermore, the birefringence dispersion ?n1(?) is also smaller than ?n2(?).Type: ApplicationFiled: December 31, 2015Publication date: June 15, 2017Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Pao-Ju HSIEH, Chi-Fu TSENG, Yi-Chang DU, Mei-Chih PENG
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Publication number: 20170138568Abstract: 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.Type: ApplicationFiled: March 24, 2016Publication date: May 18, 2017Inventors: Yi-Chun LIU, Pao-Ju HSIEH, Mei-Chih PENG, Sheng-Wei WANG
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Publication number: 20160177181Abstract: 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.Type: ApplicationFiled: December 21, 2015Publication date: June 23, 2016Inventors: Yi-Chun Liu, Pao-Ju Hsieh, Mei-Chih Peng
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Publication number: 20160170109Abstract: 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.Type: ApplicationFiled: October 8, 2015Publication date: June 16, 2016Inventors: Chih-Ming HSU, Kuo-Hua CHEN, Pao-Ju HSIEH, Mei-Chih PENG
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Patent number: 9222022Abstract: An embodiment provides a polymer-stabilized optical isotropic liquid crystal formulation, including 50 to 99.5 parts by weight of an optical isotropic liquid crystal material; and 0.5 to 50 parts by weight of polymer, wherein the polymer is polymerized by an acrylic monomer containing fluorine groups and an acrylic monomer with a liquid crystal phase and/or an acrylic monomer without a liquid crystal phase.Type: GrantFiled: May 9, 2013Date of Patent: December 29, 2015Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventor: Pao-Ju Hsieh
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Patent number: 8908130Abstract: Optical elements and backlight modules employing the same are provided. The optical element can be a brightness enhancement diffusion complex film, comprising a cholesteric liquid crystal film and a transparent optical film directly disposed on the cholesteric liquid crystal film. Particularly, the whole transparent optical film directly contacts to the cholesteric liquid crystal film, in the absence of an intermediate located between the transparent optical film and the cholesteric liquid crystal film.Type: GrantFiled: November 2, 2009Date of Patent: December 9, 2014Assignee: Industrial Technology Research InstituteInventors: Ying-Jui Lin, Hui-Lung Kuo, Pin-Chen Chen, Pao-Ju Hsieh
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Publication number: 20130341566Abstract: An embodiment provides a polymer-stabilized optical isotropic liquid crystal formulation, including 50 to 99.5 parts by weight of an optical isotropic liquid crystal material; and 0.5 to 50 parts by weight of polymer, wherein the polymer is polymerized by an acrylic monomer containing fluorine groups and an acrylic monomer with a liquid crystal phase and/or an acrylic monomer without a liquid crystal phase.Type: ApplicationFiled: May 9, 2013Publication date: December 26, 2013Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventor: Pao-Ju HSIEH
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Patent number: 8107050Abstract: A display material and method and device thereof are provided. The display material is first formed by evenly mixing appropriate weight ratios of DFLCs, incurable nanoparticles, curable nanoparticles, and a photoinitiator. Next, the evenly mixed mixture is disposed between two parallel conducting transparent substrates, wherein an electrical field is conducted thereto and the DFLCs therein aligned to the direction of the applied electrical field. Concurrently, under the applied electrical field, some curable nanoparticles within the evenly mixed mixture, form short nano chains, initiating the photo initiator. The frame structure of short nano chains stabilize both the clear and scattering states, thereby the bistable characteristic was improved and the contrast ratio was enhanced as applied to bistable displays.Type: GrantFiled: September 18, 2009Date of Patent: January 31, 2012Assignee: Industrial Technology Research InstituteInventors: Pao-Ju Hsieh, Hui-Lung Kuo
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Patent number: 8023080Abstract: A high transmittance brightness enhanced optical element for backlight modules and liquid crystal display device is disclosed. The brightness enhanced polarizing optical element comprises a reflective polarizer film, a phase retardation film, and a polarization enhancement film. The reflective polarizer film provides a function of selectively reflecting right-handness circularly polarized light or left-handness circularly polarized light and will transmit the other one of them. The one was selectively reflected will be recombined with the light source or the backlight and re-direct toward the reflective polarizer. The portions of the reflective light will be recombined with the fresh light from the light source as above and the processes repeatedly. As a result, almost all of the light transmit the reflective polarizer and in the same circular polarization. The light is then transmitted the phase retardation film and converted to a polarized light with another optical axis.Type: GrantFiled: July 6, 2009Date of Patent: September 20, 2011Assignee: Industrial Technology Research InstituteInventors: Hui-Lung Kuo, Ping-Chen Chen, Yi-Ping Hsieh, Pao-Ju Hsieh, Yu-Hsun Wu
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Publication number: 20100321626Abstract: A display material and method and device thereof are provided. The display material is first formed by evenly mixing appropriate weight ratios of DFLCs, incurable nanoparticles, curable nanoparticles, and a photoinitiator. Next, the evenly mixed mixture is disposed between two parallel conducting transparent substrates, wherein an electrical field is conducted thereto and the DFLCs therein aligned to the direction of the applied electrical field. Concurrently, under the applied electrical field, some curable nanoparticles within the evenly mixed mixture, form short nano chains, initiating the photo initiator. The frame structure of short nano chains stabilize both the clear and scattering states, thereby the bistable characteristic was improved and the contrast ratio was enhanced as applied to bistable displays.Type: ApplicationFiled: September 18, 2009Publication date: December 23, 2010Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Pao-Ju Hsieh, Hui-Lung Kuo
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Publication number: 20100110336Abstract: Optical elements and backlight modules employing the same are provided. The optical element can be a brightness enhancement diffusion complex film, comprising a cholesteric liquid crystal film and a transparent optical film directly disposed on the cholesteric liquid crystal film. Particularly, the whole transparent optical film directly contacts to the cholesteric liquid crystal film, in the absence of an intermediate located between the transparent optical film and the cholesteric liquid crystal film.Type: ApplicationFiled: November 2, 2009Publication date: May 6, 2010Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Ying-Jui Lin, Hui-Lung Kuo, Pin-Chen Chen, Pao-Ju Hsieh
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Publication number: 20090284690Abstract: A high transmittance brightness enhanced optical element for backlight modules and liquid crystal display device is disclosed. The brightness enhanced polarizing optical element comprises a reflective polarizer film, a phase retardation film, and a polarization enhancement film. The reflective polarizer film provides a function of selectively reflecting right-handness circularly polarized light or left-handness circularly polarized light and will transmit the other one of them. The one was selectively reflected will be recombined with the light source or the backlight and re-direct toward the reflective polarizer. The portions of the reflective light will be recombined with the fresh light from the light source as above and the processes repeatedly. As a result, almost all of the light transmit the reflective polarizer and in the same circular polarization. The light is then transmitted the phase retardation film and converted to a polarized light with another optical axis.Type: ApplicationFiled: July 6, 2009Publication date: November 19, 2009Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Hui-Lung Kuo, Ping-Chen Chen, Yi-Ping Hsieh, Pao-Ju Hsieh, Yu-Hsun Wu
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Patent number: 7499124Abstract: A liquid crystal device includes a pair of substrates with anchoring energy. A cell gap is formed between the pair of substrates. Polymer dispersed liquid crystals are arranged in the cell gap.Type: GrantFiled: May 5, 2005Date of Patent: March 3, 2009Assignee: Industrial Technology Research InstituteInventors: Pao-Ju Hsieh, Yi-Hsin Lin, Hongwen Ren, Shin-Tson Wu
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Publication number: 20080158877Abstract: A backlight module and a display using the same are disclosed. The backlight module includes an emitting device having a plurality of light emitting elements controlled by a color sequential method and a polarizing module on the emitting device. The display further has a display panel and a polarizer plate. The display panel is disposed between the polarizer plate and the backlight module.Type: ApplicationFiled: July 9, 2007Publication date: July 3, 2008Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Pao-Ju Hsieh, Hui-Lung Kuo, Mei-Chih Peng, Chun-Hsiang Wen