Patents by Inventor Mei-Chih Peng
Mei-Chih Peng 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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Patent number: 11935981Abstract: A photo-detecting device includes a first semiconductor layer with a first dopant, a light-absorbing layer, a second semiconductor layer, and a semiconductor contact layer. The second semiconductor layer is located on the first semiconductor layer and has a first region and a second region, the light absorbing layer is located between the first semiconductor layer and the second semiconductor layer and has a third region and a fourth region, the semiconductor contact layer contacts the first region. The first region includes a second dopant and a third dopant, the second region includes second dopant, and the third region includes third dopant. The semiconductor contact layer has a first thickness greater than 50 ? and smaller than 1000 ?.Type: GrantFiled: June 30, 2021Date of Patent: March 19, 2024Assignee: EPISTAR CORPORATIONInventors: Chu-Jih Su, Chia-Hsiang Chou, Wei-Chih Peng, Wen-Luh Liao, Chao-Shun Huang, Hsuan-Le Lin, Shih-Chang Lee, Mei Chun Liu, Chen Ou
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Patent number: 11795080Abstract: 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.Type: GrantFiled: December 30, 2021Date of Patent: October 24, 2023Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Ting-Ting Chang, Kuan-Foo Chang, Cheng-Chin Chang, Yi-Chun Liu, 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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Publication number: 20230212046Abstract: 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.Type: ApplicationFiled: December 30, 2021Publication date: July 6, 2023Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Ting-Ting CHANG, Kuan-Foo CHANG, Cheng-Chin CHANG, Yi-Chun LIU, 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: 9244554Abstract: 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.Type: GrantFiled: January 22, 2014Date of Patent: January 26, 2016Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Chen-Pang Kung, Hui-Lung Kuo, Shu-Hsing Lee, Cheng-Chung Lee, Mei-Chih Peng
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Patent number: 9093398Abstract: 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.Type: GrantFiled: April 16, 2013Date of Patent: July 28, 2015Assignee: Industrial Technology Research InstituteInventors: Hui-Lung Kuo, Mei-Chih Peng, Yi-Chang Du, Mei-Rurng Tseng
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Publication number: 20150110967Abstract: 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.Type: ApplicationFiled: December 23, 2014Publication date: April 23, 2015Inventors: Hui-Lung KUO, Mei-Chih PENG, Yi-Ping HSIEH, Chin-Kai CHANG
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Patent number: 8947620Abstract: 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.Type: GrantFiled: October 28, 2011Date of Patent: February 3, 2015Assignee: Industrial Technology Research InstituteInventors: Hui-Lung Kuo, Mei-Chih Peng, Yi-Ping Hsieh, Chin-Kai Chang
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Patent number: 8922740Abstract: 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 R0 of 100 nm˜170 nm and out-of-plane phase retardation Rth of 0 nm˜400 nm.Type: GrantFiled: December 12, 2012Date of Patent: December 30, 2014Assignee: Industrial Technology Research InstituteInventors: Yi-Ping Hsieh, Hui-Lung Kuo, Jui-Fa Chang, Mei-Chih Peng, Yi-Chang Du
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Publication number: 20140097412Abstract: 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.Type: ApplicationFiled: April 16, 2013Publication date: April 10, 2014Applicant: Industrial Technology Research InstituteInventors: Hui-Lung Kuo, Mei-Chih Peng, Yi-Chang Du, Mei-Rurng Tseng
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Patent number: 8368857Abstract: 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.Type: GrantFiled: August 18, 2009Date of Patent: February 5, 2013Assignee: Industrial Technology Research InstituteInventors: Hui-Lung Kuo, Mei-Chih Peng, Pin-Chen Chen, Ying-Jui Lin
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Publication number: 20120169960Abstract: 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.Type: ApplicationFiled: October 28, 2011Publication date: July 5, 2012Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Hui-Lung Kuo, Mei-Chih Peng, Yi-Ping Hsieh, Chin-Kai Chang
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Patent number: 8054442Abstract: 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 ?700 nm and a short wavelength boundary ?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.Type: GrantFiled: April 30, 2009Date of Patent: November 8, 2011Assignee: Industrial Technology Research InstituteInventors: Hui-Lung Kuo, Mei-Chih Peng, Pin-Chen Chen, Ying-Jui Lin