Patents by Inventor Hsueh-Shih Chen
Hsueh-Shih Chen 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: 10896997Abstract: The present invention discloses a light-diffusion quantum dot nanostructure and an LED component having the same. The quantum dot nanostructure comprises an optical core, an organic ligand layer, a hydrophobic layer, an inorganic encapsulation layer, and a multi-layered water vapor barrier layer. In the present invention, the multi-layered water vapor barrier layer is particularly designed to an onion skin-like structure, so as to facilitate photoluminescence rays radiated from the optical core can emit out of the barrier layer via voids or pores of the onion skin-like structure, such that the uniformity of the spatial light output distribution of the LED component having the quantum dot nanostructures can be obviously enhanced. On the other hand, because the multi-layered water vapor barrier layer can also improve the dispersibility of the light-diffusion quantum dot nanostructures in a colloidal encapsulation of the LED component, the luminous intensity of the LED component is therefore increased.Type: GrantFiled: October 31, 2017Date of Patent: January 19, 2021Inventor: Hsueh-Shih Chen
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Patent number: 10781365Abstract: Differing from commercial solution of colloidal quantum dots being often composed of a non-polar organic solvent and a plurality of quantum dots, the present invention discloses a combination solution of colloidal quantum dots comprising a liquid monomer with low glass transition temperature and a plurality of quantum dot units, wherein the quantum dot unit comprises a polar carrier particle, a plurality of quantum dots and an enclosure layer with high glass transition temperature. It is worth explaining that, after applying an aging treatment to the combination solution of colloidal quantum dots and the commercial solution of colloidal quantum dots for 200 minutes, measurement data of UV-VIS spectrophotometer have proved that the combination solution of colloidal quantum dots provided by the present invention is 1.6 times as stable as the commercial solution of colloidal quantum dots.Type: GrantFiled: October 31, 2017Date of Patent: September 22, 2020Assignee: NATIONAL TSING HUA UNIVERSITYInventor: Hsueh-Shih Chen
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Patent number: 10713977Abstract: Disclosures of the present invention describe an anti-counterfeit security verification method and device using quantum dots, wherein the anti-counterfeit security verification device consists of a base, a plurality of receiving recesses formed on the base, and a plurality of optical members. After being illuminated by a short-wavelength light, the optical members irradiate a plurality of photoluminescent light, and each of the photoluminescent lights comprises at least one wavelength value, one (x, y) coordinate position, one value of integrated photoluminescence intensity area, one photoluminescence color, and one color scale value.Type: GrantFiled: January 3, 2019Date of Patent: July 14, 2020Assignee: National Tsing Hua UniversityInventor: Hsueh-Shih Chen
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Publication number: 20200202751Abstract: Disclosures of the present invention describe an anti-counterfeit security verification method and device using quantum dots, wherein the anti-counterfeit security verification device consists of a base, a plurality of receiving recesses formed on the base, and a plurality of optical members. After being illuminated by a short-wavelength light, the optical members irradiate a plurality of photoluminescent light, and each of the photoluminescent lights comprises at least one wavelength value, one (x, y) coordinate position, one value of integrated photoluminescence intensity area, one photoluminescence color, and one color scale value.Type: ApplicationFiled: January 3, 2019Publication date: June 25, 2020Inventor: Hsueh-Shih Chen
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Patent number: 10670231Abstract: The present invention discloses a light conversion material with light reflective structure, comprises: a transparent substrate, a plurality of first light conversion films and second light conversion films. Particularly, the second light conversion film is disposed between two of the first light conversion films, and has a refractive index greater than that of the first light conversion film. By such design, when a short-wavelength light is incident on the first light conversion films and the second light conversion films, parts of the short-wavelength light have a reflected light forming at the junction between the two light conversion films, and the reflected light would bounce back to the first light conversion film and/or the second light conversion film, thereby those unconverted short-wavelength light being prevented from directly passing the light conversion material. Briefly speaking, this light conversion material exhibits an outstanding performance on short-wavelength light recycling.Type: GrantFiled: May 31, 2018Date of Patent: June 2, 2020Assignee: National Tsing Hua UniversityInventor: Hsueh-Shih Chen
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Patent number: 10611957Abstract: A quantum dot luminophore comprising at least one luminescent core, a spacer layer, an encapsulation layer, and a plurality of quantum dots is disclosed. The luminescent core is designed to emit a red light after being excited by an incident blue light, and the quantum dots are configured to irradiate a green light by the illumination of the blue light and/or the red light. In the present invention, the quantum dots are particularly used to cover or surround the luminescent core for solving the light re-absorption. By such arrangement, even though part of incident blue light (about 10-30%) may be reflected by the luminescent core made of phosphor materials, the reflected blue light still can also be recycled by the quantum dots surrounding the luminescent core, such that the light conversion efficiency and emission intensity of the luminescent core are hence increased because the loss of blue light is decreased.Type: GrantFiled: September 27, 2017Date of Patent: April 7, 2020Assignee: TSING YAN TECHNOLOGY CO., LTD.Inventors: Ying-Fang Chen, Hsueh-Shih Chen
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Publication number: 20190322931Abstract: A nanocrystal with a large Stokes shift includes a matrix domain having a composition of M1xM2yAz, and a plurality of seed domains which are distributed in the matrix domain and each of which has a composition of M1x?M2y?Az?, wherein M1, M2, A, x, y, z, x?, y?, and z? are as defined herein.Type: ApplicationFiled: August 17, 2018Publication date: October 24, 2019Applicant: National Tsing Hua UniversityInventors: Hsueh-Shih CHEN, Yi-Ching YANG
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Publication number: 20190301709Abstract: The present invention discloses a light conversion material with light reflective structure, comprises: a transparent substrate, a plurality of first light conversion films and second light conversion films. Particularly, the second light conversion film is disposed between two of the first light conversion films, and has a refractive index greater than that of the first light conversion film. By such design, when a short-wavelength light is incident on the first light conversion films and the second light conversion films, parts of the short-wavelength light have a reflected light forming at the junction between the two light conversion films, and the reflected light would bounce back to the first light conversion film and/or the second light conversion film, thereby those unconverted short-wavelength light being prevented from directly passing the light conversion material. Briefly speaking, this light conversion material exhibits an outstanding performance on short-wavelength light recycling.Type: ApplicationFiled: May 31, 2018Publication date: October 3, 2019Inventor: Hsueh-Shih Chen
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Publication number: 20190293842Abstract: Light scattering particles made of TiO2, BaSO4, SiO2, or Al2O3 have been used in a QD layer of a QD-LED for enhancing luminous intensity. However, the light scatters are found to decline the light conversion efficiency of the QD layer. In view of that, the present invention particularly discloses a light conversion material with high conversion efficiency for use in the QD-LED. The light conversion material mainly comprises a polymer matrix, a plurality of 3D photonic crystals dispersed in the polymer matrix, and a plurality of quantum dots dispersed in the polymer matrix, wherein each of the plurality of 3D photonic crystals is formed by applying a self-assembly process to a plurality of polymer beads. Moreover, a variety of experimental data have proved that, this light conversion material indeed exhibits outstanding photoluminescence intensity and light conversion efficiency both superior than that of the conventionally-used QD layer.Type: ApplicationFiled: June 23, 2018Publication date: September 26, 2019Inventors: Hsueh-Shih Chen, SHIH-JUNG HO
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Patent number: 10261643Abstract: The present invention discloses a novel and inventive transparent conductive film Differing from conventional metal mesh substrates are mainly constituted by silver nanowires (AgNW), the present invention particularly designs a nano metal wire consisting of a metallic core wire, a transition layer and a protection layer, and further develops a transparent conductive film consisting of a substrate and a metal mesh layer; wherein the metal mesh layer is constituted by the said nano metal wires. It is worth describing that, a variety of experimental data prove that the thermal resistance of this novel transparent conductive film is up to 400° C.; moreover, experimental data also exhibit that the transparent conductive film can filter part of blue light portion out of a white light by 20-30%.Type: GrantFiled: January 10, 2017Date of Patent: April 16, 2019Assignee: National Tsing Hua UniversityInventors: Hsueh-Shih Chen, Ming-Hua Yeh, Shih-Jung Ho
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Patent number: 10193006Abstract: A nanowire composite structure is provided. The nanowire composite structure includes a nanowire core, wherein a material of the nanowire core includes Se, Te or a combination thereof. The nanowire composite structure also includes a metal layer covering the nanowire core. A method for forming the nanowire composite structure, a protective structure of a nanowire, a sensing device, and a method for forming a sensing device are also provided.Type: GrantFiled: June 16, 2017Date of Patent: January 29, 2019Assignee: NATIONAL TSING HUA UNIVERSITYInventors: Hsueh-Shih Chen, Pin-Ru Chen
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Publication number: 20180312749Abstract: Differing from commercial solution of colloidal quantum dots being often composed of a non-polar organic solvent and a plurality of quantum dots, the present invention discloses a combination solution of colloidal quantum dots comprising a liquid monomer with low glass transition temperature and a plurality of quantum dot units, wherein the quantum dot unit comprises a polar carrier particle, a plurality of quantum dots and an enclosure layer with high glass transition temperature. It is worth explaining that, after applying an aging treatment to the combination solution of colloidal quantum dots and the commercial solution of colloidal quantum dots for 200 minutes, measurement data of UV-VIS spectrophotometer have proved that the combination solution of colloidal quantum dots provided by the present invention is 1.6 times as stable as the commercial solution of colloidal quantum dots.Type: ApplicationFiled: October 31, 2017Publication date: November 1, 2018Inventor: Hsueh-Shih Chen
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Publication number: 20180315898Abstract: The present invention discloses a light-diffusion quantum dot nanostructure and an LED component having the same. The quantum dot nanostructure comprises an optical core, an organic ligand layer, a hydrophobic layer, an inorganic encapsulation layer, and a multi-layered water vapor barrier layer. In the present invention, the multi-layered water vapor barrier layer is particularly designed to an onion skin-like structure, so as to facilitate photoluminescence rays radiated from the optical core can emit out of the barrier layer via voids or pores of the onion skin-like structure, such that the uniformity of the spatial light output distribution of the LED component having the quantum dot nanostructures can be obviously enhanced. On the other hand, because the multi-layered water vapor barrier layer can also improve the dispersibility of the light-diffusion quantum dot nanostructures in a colloidal encapsulation of the LED component, the luminous intensity of the LED component is therefore increased.Type: ApplicationFiled: October 31, 2017Publication date: November 1, 2018Inventor: Hsueh-Shih Chen
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Patent number: 10010850Abstract: The present invention mainly provides a non-contact reactor consisting of a reaction vessel having a particularly-designed size, a plurality of injection modules, an agitator, a heat exchange module, and an electrical gate valve module. Operators can inject at least one precursor solution into the reaction nanometer-scale semiconductor crystallites vessel and make the injected precursor solution reach a specific position in the reaction vessel by using the electrical gate valve to control the injection pressure of the injection modules. Moreover, the operators can further control the rotation speed of the agitator through a controller, so as to evenly and quickly mix the injected precursor solution and a specific solution pre-filled into the reaction vessel to a mixture solution; therefore, the acceleration of production rate and the enhance of production yield of the semiconductor nanocrystals are carried out.Type: GrantFiled: January 10, 2017Date of Patent: July 3, 2018Assignee: National Tsing Hua UniversityInventors: Hsueh-Shih Chen, Shih-Jung Ho, Chang-Wei Yeh
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Patent number: 9997355Abstract: A method for preparing a quantum dot mixture with a bimodal size distribution includes steps of: a) preparing a mixed cationic precursor solution, b) preparing a first anionic precursor solution and a second anionic precursor solution, c) conducting a nucleation reaction at a nucleation temperature for a predetermined nucleation time, and d) conducting a crystallite growth reaction at a crystallite growth temperature for a predetermined crystallite growth time.Type: GrantFiled: September 15, 2017Date of Patent: June 12, 2018Assignee: National Tsing Hua UniversityInventors: Hsueh-Shih Chen, Ching-Che Hung
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Patent number: 9982140Abstract: An inorganic-organic hybrid oxide polymer is provided. The polymer consists of an inorganic molecular cluster MxNyOz and an organic molecular polymer cluster OG, wherein the inorganic molecular cluster MxNyOz consists of a hybrid oxidation based on a first element M and a second element N and has a molecular formula MxNyOz, wherein x=0.01˜0.99, y=0.01˜0.99, z/(x+y)=0.01˜3.99, and the inorganic molecular cluster MxNyOz has a plurality of voids having an averaged characteristic dimension in a range between 0.2 nm˜30 nm and filled with the organic molecular polymer cluster OG, wherein the first element M and the second element N are respectively selected from a group consisting of an intermediate element, a metal element, a semiconductor element and a combination thereof and the first element M is different from the second element N.Type: GrantFiled: February 10, 2015Date of Patent: May 29, 2018Assignee: National Tsing Hua UniversityInventor: Hsueh-Shih Chen
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Publication number: 20180112129Abstract: A quantum dot luminophore comprising at least one luminescent core, a spacer layer, an encapsulation layer, and a plurality of quantum dots is disclosed. The luminescent core is designed to emit a red light after being excited by an incident blue light, and the quantum dots are configured to irradiate a green light by the illumination of the blue light and/or the red light. In the present invention, the quantum dots are particularly used to cover or surround the luminescent core for solving the light re-absorption. By such arrangement, even though part of incident blue light (about 10-30%) may be reflected by the luminescent core made of phosphor materials, the reflected blue light still can also be recycled by the quantum dots surrounding the luminescent core, such that the light conversion efficiency and emission intensity of the luminescent core are hence increased because the loss of blue light is decreased.Type: ApplicationFiled: September 27, 2017Publication date: April 26, 2018Inventors: YING-FANG CHEN, HSUEH-SHIH CHEN
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Patent number: 9925530Abstract: The present invention relates to a nanoporous thin film and a method for fabricating the same. The nanoporous thin film fabricating method for fabricating a nanoporous thin film with a composite photocatalyst structure for a photodegradation and a water purification includes providing a porous substrate with a plurality of through-nanopores therein, each of which through-nanopores have an inner tube wall; forming an oxide-based photocatalyst layer over the porous substrate and the inner tube wall by using a first chemical-based deposition process; and forming a metal-based photocatalyst layer on a part of the oxide-based photocatalyst layer by using a second chemical-based deposition process.Type: GrantFiled: August 27, 2015Date of Patent: March 27, 2018Assignee: NATIONAL TSING HUA UNIVERSITYInventors: Tsong-Pyng Perng, Hsueh-Shih Chen, Chung-Yi Su, Po-Hsun Chen
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Publication number: 20180067579Abstract: The present invention discloses a novel and inventive transparent conductive film Differing from conventional metal mesh substrates are mainly constituted by silver nanowires (AgNW), the present invention particularly designs a nano metal wire consisting of a metallic core wire, a transition layer and a protection layer, and further develops a transparent conductive film consisting of a substrate and a metal mesh layer; wherein the metal mesh layer is constituted by the said nano metal wires. It is worth describing that, a variety of experimental data prove that the thermal resistance of this novel transparent conductive film is up to 400° C.; moreover, experimental data also exhibit that the transparent conductive film can filter part of blue light portion out of a white light by 20-30%.Type: ApplicationFiled: January 10, 2017Publication date: March 8, 2018Inventors: HSUEH-SHIH CHEN, MING-HUA YEH, SHIH-JUNG HO
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Publication number: 20180050316Abstract: The present invention mainly provides a non-contact reactor consisting of: a reaction vessel having a particularly-designed size, a plurality of injection modules, an agitator, a heat exchange module, and an electrical gate valve module. When this non-contact reactor is operated to produce, operators are able to inject at least one precursor solution into the reaction nanometer-scale semiconductor crystallites vessel and make the injected precursor solution reach a specific position in the reaction vessel by using the electrical gate valve to control the injection pressure of the injection modules. Moreover, the operators can further properly control the rotation speed of the agitator through a controller, so as to evenly and quickly mix the injected precursor solution and a specific solution pre-filled into the reaction vessel to a mixture solution; therefore, the acceleration of production rate and the enhance of production yield of the semiconductor nanocrystals are carried out.Type: ApplicationFiled: January 10, 2017Publication date: February 22, 2018Inventors: HSUEH-SHIH CHEN, SHIH-JUNG HO, CHANG-WEI YEH