Patents by Inventor Ya-Hsien Chang
Ya-Hsien Chang 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: 20250038072Abstract: A semiconductor die includes a substrate, a semiconductor device, a back-end-of-line (BEOL) structure, and a heat dissipation structure. The substrate includes a device region and a non-device region. The BEOL structure includes a plurality of metallization layers. Each of the metallization layers includes a dielectric layer, interconnect features, and metal patterns. The interconnect features is in the dielectric layer and over the device region of the substrate, in which the interconnect features are electrically connected with the semiconductor device. The metal patterns are in the dielectric layer and over the non-device region of the substrate, in which the metal patterns are electrically isolated from the semiconductor device. The heat dissipation structure is over the non-device region of the substrate and extending through at least two of the metallization layers, in which the heat dissipation structure is in contact with the metal patterns of one of the metallization layers.Type: ApplicationFiled: July 27, 2023Publication date: January 30, 2025Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.Inventors: Hsin-Yuan LEE, Chih-Kai YANG, Ken-Hsien HSIEH, Ya Hui CHANG
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Publication number: 20240322093Abstract: A light-emitting module is provided. The light-emitting module includes a substrate and n number of light-emitting elements disposed on the substrate. The n number of light-emitting elements have n?1 number of first intervals. The n?1 number of first intervals have a first standard deviation, wherein n is greater than or equal to 3. The light-emitting module further includes a light-shielding structure which is disposed on the n number of light-emitting elements and has n number of light-emitting holes. The n number of light-emitting holes correspond to the n number of light-emitting elements, respectively, and have n?1 number of second intervals. The n?1 number of second intervals have a second standard deviation, wherein the first standard deviation is greater than the second standard deviation.Type: ApplicationFiled: March 20, 2024Publication date: September 26, 2024Inventors: Ya-Hsien CHANG, Wei-Chiang HU, Bo-Yu KO, Chieh-Chun CHANG, Tzu-Yuan LIN, Ching-Yi CHEN
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Patent number: 8228272Abstract: A backlight device for providing backlighting to a liquid crystal display panel displaying a video image comprising a plurality of light emitting devices for providing backlighting to a liquid crystal display panel, a controller unit for receiving a video image and dividing the video image into a plurality of sub-images wherein each sub-image corresponds to at least one light emitting device, and for generating driving signals of each light emitting device according to grayscale level characteristics of at least one sub-image.Type: GrantFiled: February 16, 2007Date of Patent: July 24, 2012Assignee: Hong Kong Applied Science And Technlogy Research Institute Company LimitedInventors: Huajun Peng, Ya-Hsien Chang, Chen Jung Tsai
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Patent number: 8109650Abstract: A light emitting diode (LED) illuminant system, a manufacture method thereof, and a backlight module using the same are provided. The LED illuminant system includes a plurality of white light illuminants and at least one green light illuminant mixed in the white light illuminants. A light power ratio of the green light illuminant to the white light illuminants is in between ? to 1/20. The color temperature of the whole illuminant system will be enhanced to a certain extent by mixing the green light illuminant and the white light illuminants. The manufacture method includes the following steps: obtaining a transmission spectrum of the white light illuminants; analyzing the transmission spectrum to determine n supplemental amount of a green light; and disposing at least one green illuminant in accordance with the supplemental amount of the green light.Type: GrantFiled: May 20, 2009Date of Patent: February 7, 2012Assignee: AU Optronics CorporationInventors: Ya-Hsien Chang, Hsin-Wu Lin
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Patent number: 7950814Abstract: A backlight module includes an optical film set and a plurality of light source sets having a first light source and a second light source. The first light source generates a first chromaticity light while the second light source generates a second chromaticity light. The first chromaticity light mixes with the second chromaticity light in the space between the light source sets and the optical film set and then enters the optical film set. The first chromaticity light and the second chromaticity light have their own spectrum and both spectra fall into a first color region of the CIE 1931 color space. Within the first color region, the spectrum of the first chromaticity light is close to a second color region while the spectrum of the second chromaticity light is close to a third color region.Type: GrantFiled: November 11, 2008Date of Patent: May 31, 2011Assignee: AU Optronics CorporationInventors: Ya-Hsien Chang, Yu-Kai Lin
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Patent number: 7935981Abstract: A light emitting diode (LED) package includes a carrier, an LED chip, an encapsulant, a plurality of phosphor particles, and a plurality of anti-humidity particles. The LED chip is disposed on and electrically connected to the carrier. The encapsulant encapsulates the LED chip. The phosphor particles and the anti-humidity particles are distributed within the encapsulant. A first light emitted from the LED chip excites the phosphor particles to emit a second light. Some of the anti-humidity particles are adhered onto a surface of the phosphor particles, while the other anti-humidity particles are not adhered onto the surface of the phosphor particles. The anti-humidity particles absorb H2O so as to avoid H2O from being reacted with the phosphor particles. The LED package of the present application has favorable water resistance.Type: GrantFiled: July 6, 2009Date of Patent: May 3, 2011Assignee: Lextar Electronics Corp.Inventors: Yu-Chun Lee, Ya-Hsien Chang, Cheng-Ta Kuo
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Patent number: 7922362Abstract: A circuit board assembly and a backlight module comprising the circuit board assembly are provided. The circuit board assembly has a first surface and a second surface opposite to the first surface, and further comprises at least one laminate, a first conductive wiring structure and a coating. The first conductive wiring structure is formed on the first surface. The coating is formed on the coating area of the second surface, wherein the coating can conduct heat and provide electric insulation. Thus, the circuit board assembly is adapted to outwardly conduct heat from the laminate through the second surface and to promote the heat dissipation efficiency of the circuit board assembly.Type: GrantFiled: April 4, 2008Date of Patent: April 12, 2011Assignee: Au Optronics Corp.Inventors: Yu-Kai Lin, Ya-hsien Chang
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Publication number: 20100237367Abstract: A light emitting diode (LED) package includes a carrier, an LED chip, an encapsulant, a plurality of phosphor particles, and a plurality of anti-humidity particles. The LED chip is disposed on and electrically connected to the carrier. The encapsulant encapsulates the LED chip. The phosphor particles and the anti-humidity particles are distributed within the encapsulant. A first light emitted from the LED chip excites the phosphor particles to emit a second light. Some of the anti-humidity particles are adhered onto a surface of the phosphor particles, while the other anti-humidity particles are not adhered onto the surface of the phosphor particles. The anti-humidity particles absorb H2O so as to avoid H2O from being reacted with the phosphor particles. The LED package of the present application has favorable water resistance.Type: ApplicationFiled: July 6, 2009Publication date: September 23, 2010Applicant: Lextar Electronics Corp.Inventors: Yu-Chun Lee, Ya-Hsien Chang, Cheng-Ta Kuo
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Patent number: 7671542Abstract: The present invention relates to a light emitting diode (LED) backlight having a plurality of LED strips, in which driving current supplied to each of the plurality of LED strips is adjusted according to measured differences in chromaticity coordinates between the actual light chromaticity and brightness output by each LED strip and a desired light chromaticity and brightness of each LED so that the LED backlight generates light of a desired color with a uniform brightness, and methods of operating the same.Type: GrantFiled: November 7, 2007Date of Patent: March 2, 2010Assignee: AU Optronics CorporationInventors: Ya-Hsien Chang, Jyh-Haur Huang
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Publication number: 20090290339Abstract: A light emitting diode (LED) illuminant system, a manufacture method thereof, and a backlight module using the same are provided. The LED illuminant system includes a plurality of white light illuminants and at least one green light illuminant mixed in the white light illuminants. A light power ratio of the green light illuminant to the white light illuminants is in between 1/5 to 1/20. The color temperature of the whole illuminant system will be enhanced to a certain extent by mixing the green light illuminant and the white light illuminants. The manufacture method includes the following steps: obtaining a transmission spectrum of the white light illuminants; analyzing the transmission spectrum to determine n supplemental amount of a green light; and disposing at least one green illuminant in accordance with the supplemental amount of the green light.Type: ApplicationFiled: May 20, 2009Publication date: November 26, 2009Applicant: AU OPTRONICS CORPORATIONInventors: Ya-Hsien Chang, Hsin-Wu Lin
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Publication number: 20090147501Abstract: The present invention provides a backlight module and a manufacture method thereof using complementary light sources having the same color. The backlight module includes an optical film set and a plurality of light source sets having a first light source and a second light source. The first light source generates a first chromaticity light while the second light source generates a second chromaticity light. The first chromaticity light mixes with the second chromaticity light in the space between the light source sets and the optical film set and then enters the optical film set. The first chromaticity light and the second chromaticity light have their own spectrum and both spectra fall into a first color region of the CIE 1931 color space. Within the first color region, the spectrum of the first chromaticity light is close to a second color region while the spectrum of the second chromaticity light is close to a third color region.Type: ApplicationFiled: November 11, 2008Publication date: June 11, 2009Applicant: AU OPTRONICS CORPORATIONInventors: Ya-Hsien Chang, Yu-Kai Lin
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Publication number: 20090116232Abstract: The present invention relates to a light emitting diode (LED) backlight having a plurality of LED strips, in which driving current supplied to each of the plurality of LED strips is adjusted according to measured differences in chromaticity coordinates between the actual light chromaticity and brightness output by each LED strip and a desired light chromaticity and brightness of each LED so that the LED backlight generates light of a desired color with a uniform brightness, and methods of operating the same.Type: ApplicationFiled: November 7, 2007Publication date: May 7, 2009Applicant: AU Optronics CorporationInventors: Ya-Hsien Chang, Jyh-Haur Huang
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Patent number: D634283Type: GrantFiled: August 5, 2010Date of Patent: March 15, 2011Assignee: Lextar Electronics CorporationInventors: Bo-Yu Ko, Ya-Hsien Chang, Chun-Wei Wang
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Patent number: D634284Type: GrantFiled: August 5, 2010Date of Patent: March 15, 2011Assignee: Lextar Electronics CorporationInventors: Bo-Yu Ko, Ya-Hsien Chang, Chun-Wei Wang
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Patent number: D634285Type: GrantFiled: August 5, 2010Date of Patent: March 15, 2011Assignee: Lextar Electronics CorporationInventors: Bo-Yu Ko, Ya-Hsien Chang, Chun-Wei Wang
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Patent number: D634286Type: GrantFiled: August 5, 2010Date of Patent: March 15, 2011Assignee: Lextar Electronics CorporationInventors: Bo-Yu Ko, Ya-Hsien Chang, Chun-Wei Wang
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Patent number: D637980Type: GrantFiled: August 5, 2010Date of Patent: May 17, 2011Assignee: Lextar Electronics CorporationInventors: Bo-Yu Ko, Ya-Hsien Chang, Chun-Wei Wang
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Patent number: D637981Type: GrantFiled: August 5, 2010Date of Patent: May 17, 2011Assignee: Lextar Electronics CorporationInventors: Bo-Yu Ko, Ya-Hsien Chang, Chun-Wei Wang
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Patent number: D638378Type: GrantFiled: August 5, 2010Date of Patent: May 24, 2011Assignee: Lextar Electronics CorporationInventors: Bo-Yu Ko, Ya-Hsien Chang, Chun-Wei Wang
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Patent number: D638808Type: GrantFiled: August 5, 2010Date of Patent: May 31, 2011Assignee: Lextar Electronics CorporationInventors: Bo-Yu Ko, Ya-Hsien Chang, Chun-Wei Wang