Patents by Inventor Wen-Yung Yeh
Wen-Yung Yeh 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: 7858991Abstract: A light emitting device with magnetic field includes a light emitting device, a thermal conductive material layer and a magnetic layer. The thermal conductive material layer is coupled with the light emitting device to dissipate heat generated by the light emitting device. The magnetic layer is coupled with thermal conductive material layer to produce a magnetic filed on the light emitting device.Type: GrantFiled: January 10, 2009Date of Patent: December 28, 2010Assignee: Industrial Technology Research InstituteInventors: Rong Xuan, Chih-Hao Hsu, Wen-Yung Yeh, Chen-Peng Hsu, Chen-Kun Chen, Kun-Fong Lin
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Publication number: 20100321640Abstract: A projection display chip comprises a micro light emitting array comprising a plurality of micro LEDs, a micro collimation array comprising a plurality of micro collimation devices, and a projection micro lens array comprising a plurality of micro lenses. Each micro LED has a corresponding driving circuit device. The plurality of micro lenses has different optical axes to enlarge projected images.Type: ApplicationFiled: May 17, 2010Publication date: December 23, 2010Applicant: INDUSTRIAL TECHNOLOGY RESEARCH InstituteInventors: Wen Yung YEH, Yu Hung Chuang, Chia Hsin Chao, Chia Ling Li, Tse Peng Chen
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Patent number: 7855388Abstract: An alternating current light-emitting device includes a substrate, a plurality of microdie light-emitting elements formed on the substrate, a rectifying element-dedicated member formed on a surface of a portion of microdie light-emitting elements, a rectifying unit formed on the rectifying element-dedicated member and provided with at least four rectifying elements forming a Wheatstone bridge circuit, and an electrically conductive structure electrically connecting the rectifying elements and the microdie light-emitting elements. With the rectifying unit being formed on the rectifying element-dedicated member, the rectifying elements are highly tolerant of reverse bias and feature low starting forward bias. Also, the present invention provides a method for fabricating an alternating current light-emitting device.Type: GrantFiled: February 26, 2007Date of Patent: December 21, 2010Assignee: Industrial Technology Research InstituteInventors: Hsi-Hsuan Yen, Wen-Yung Yeh
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Publication number: 20100308347Abstract: A light emitting device includes a plurality of micro diodes, which are electrically connected to constitute a bridge rectifier circuit. Each branch of the bridge rectifier circuit includes a single micro diode or a plurality of micro diodes. The light emitting device is electrically connected to an AC power source, which alternately drives the light emitting device in two current loops. Therefore, the micro diodes in two current loops of the bridge rectifier circuit emit light by turns.Type: ApplicationFiled: June 7, 2010Publication date: December 9, 2010Applicants: INDUSTRIAL TECHNOLOGY RESEARCH CORPORATION, EPISTAR CORPORATIONInventors: Wen-Yung Yeh, Hsi-Hsuan Yen, Tse-Peng Chen
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Publication number: 20100289416Abstract: Lighting devices capable of being powered by both AC and DC power sources without requiring AC power source to the DC power source conversion are provided, in which a lighting module comprises a plurality of micro-diodes formed on a substrate and a conductive wire pattern connecting to the micro-diodes, wherein the conductive wire pattern has at least three voltage feed points. A selection unit is coupled to a power source and selects at least two of the voltage feed points, such that a portion of the micro-diodes and the power source form at least one loop thereby turning on the micro-diodes in the loop.Type: ApplicationFiled: August 17, 2007Publication date: November 18, 2010Inventors: Wen-Yung Yeh, Jui-Ying Lin, Yu-Chen Yu
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Publication number: 20100282304Abstract: A bi-functional photovoltaic device is provided. The bi-functional photovoltaic device includes at least one solar cell and a control device. Each of the solar cell includes a multilayer semiconductor layer of group III-V compound semiconductor, a first electrode disposed on the back of the multilayer semiconductor layer, and a second electrode disposed on the front of the multilayer semiconductor layer. The control device connects with the at least one solar cell in order to control them functioning as solar cell or light emitting diode.Type: ApplicationFiled: November 18, 2008Publication date: November 11, 2010Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Ming-Hsien Wu, Wen-Yung Yeh, Rong Xuan, Wen-Yih Liao, Jung-Tsung Hsu, Mu-Tao Chu
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Publication number: 20100133504Abstract: A new light emitting device is disclosed. The device includes a reflector, a surface layer, and a light emitting layer located there-between. The light emitting layer emits light at a wavelength ?. An optical thickness from the light emitting layer to the reflector is approximately m*?/4, where m is a positive integer. Furthermore, the said device may, in addition, include an optical transform layer adjoining to the light emitting layer. Thus, the light emitted by the device can be not only collimated but also polarized.Type: ApplicationFiled: March 11, 2009Publication date: June 3, 2010Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Jih-Fu Wang, Chia-Hsin Chao, Chen-Yang Huang, Han-Tsung Hsueh, Chun-Feng Lai, Wen-Yung Yeh, Chien-Jen Sun
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Patent number: 7651254Abstract: A microchip matrix light source module includes at least two LEDs formed on a surface of a substrate. The light source further includes a light reflector formed on a surface upon which the LEDs are formed and interposed between the LEDs and configured to reflect and thereby redirect laterally emitted light from the two LEDs. The light reflector may include an inner body. The body may be covered, in part or in whole, with a light reflecting layer such as a metal layer. The body of the light reflector may include a layer corresponding to a layer in one of the two LEDs.Type: GrantFiled: December 3, 2007Date of Patent: January 26, 2010Assignee: Industrial Technology Research InstituteInventors: Wen-Yung Yeh, Hsi-Hsuan Yen, Han-Tsung Hsueh
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Publication number: 20090316412Abstract: A lamp apparatus include a lamp body, at least an alternating current light-emitting diode and a plug. The alternating current light-emitting diode is disposed on a lamp body. The plug is electrically connected to the alternating current light-emitting diode. In lamp apparatuses utilizing AC LED, heat generated thereby is almost concentrated on chips. Compared with conventional lamp apparatuses utilizing DC LEDs, heat generated thereby is distributed on chips and outer rectifier. In lamp apparatuses utilizing AC LEDs, heat generated thereby is almost concentrated on chips because AC LEDs operate directly with AC electric power, omitting a rectifier and preventing power loss during operation of power rectification. Therefore, the heat accumulated on the chips of the AC LEDs is enough to be used to evaporate essential oil. In another embodiment, the invention utilizes low-resistance pure water surrounding the AC LED to dissipate its heat.Type: ApplicationFiled: August 28, 2009Publication date: December 24, 2009Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Wen-Yung Yeh, Jui-Ying Lin, Yu-Chen Yu, Ming-Te Lin, Yu-Chun Lin, Ta-Wei Chien
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Publication number: 20090250717Abstract: A light emitting device includes a light emitting element having at least two electrodes disposed at the side of the light output surface thereof, and a base member having a recess and lead portions corresponding to the electrodes, the light emitting element being mounted on the base member and received in the recess, wherein the light output surface faces toward opening of the recess that becomes smaller while approaching the light output surface, and the electrodes are respectively in electrical connection with the lead portions that extend from the connection positions to outer edge of the base member for power connection, and a light reflecting portion is disposed in the recess adjacent to the light output surface such that the light emitted from the light emitting element can be reflected to walls of the recess to form a substantially collimated light beam so as to improve light efficiency.Type: ApplicationFiled: June 19, 2009Publication date: October 8, 2009Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Ming-Te Lin, Ming-Yao Lin, Chia-Chang Kuo, Sheng-Pan Huang, Wen-Yung Yeh
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Publication number: 20090179216Abstract: A light emitting device with magnetic field includes a light emitting device, a thermal conductive material layer and a magnetic layer. The thermal conductive material layer is coupled with the light emitting device to dissipate heat generated by the light emitting device. The magnetic layer is coupled with thermal conductive material layer to produce a magnetic filed on the light emitting device.Type: ApplicationFiled: January 10, 2009Publication date: July 16, 2009Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Rong Xuan, Chih-Hao Hsu, Wen-Yung Yeh, Chen-Peng Hsu, Chen-Kun Chen, Kun-Fong Lin
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Publication number: 20090160370Abstract: An alternating current (AC) light emitting device includes an AC light emitting diode (LED) module and a waveform modulation unit. The AC LED module includes at least two sets of micro-diodes. The waveform modulation unit coupled between the AC LED module and an AC voltage source modulates a waveform of the AC voltage source.Type: ApplicationFiled: December 18, 2008Publication date: June 25, 2009Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Sheng-Chieh Tai, Wen-Yung Yeh, Yi-Jen Chan
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Patent number: 7544524Abstract: An alternating current light-emitting device and the fabrication method thereof is disclosed. The alternating current light-emitting device includes at least one alternating current micro-die light-emitting module formed on a substrate and composed of at least two micro-dies connected to one another. The micro-dies, each includes at least two active layers, are electrically connected by a conductive structure, such that the active layers of the micro-dies take turns emitting light during positive and negative half cycles of alternating current, thereby providing a full-scale light-emitting area for all-time light emission.Type: GrantFiled: May 12, 2006Date of Patent: June 9, 2009Assignee: Industrial Technology Research InstituteInventors: Ming-Te Lin, Hsi-Hsuan Yen, Wen-Yung Yeh, Ming-Yao Lin, Sheng-Pan Huang
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Publication number: 20090141489Abstract: A microchip matrix light source module includes at least two LEDs formed on a surface of a substrate. The light source further includes a light reflector formed on a surface upon which the LEDs are formed and interposed between the LEDs and configured to reflect and thereby redirect laterally emitted light from the two LEDs. The light reflector may include an inner body. The body may be covered, in part or in whole, with a light reflecting layer such as a metal layer. The body of the light reflector may include a layer corresponding to a layer in one of the two LEDs.Type: ApplicationFiled: December 3, 2007Publication date: June 4, 2009Inventors: Wen-Yung Yeh, Hsi-Hsuan Yen, Han-Tsung Hsueh
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Publication number: 20090128004Abstract: A light-emitting device comprises a substrate, at least one light-emitting structure configured to emit light beams and positioned on the substrate, and a ring-shaped photonic crystal structure positioned in the light-emitting structure. The ring-shaped photonic crystal structure includes a plurality of pillars positioned in the light-emitting structure and a plurality of ring-shaped openings surrounding the pillars. The distance between the ring-shaped openings is preferably between 0.2? and 10?, and ? represents the wavelength of the light beam.Type: ApplicationFiled: November 5, 2008Publication date: May 21, 2009Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: CHIA HSIN CHAO, CHUN FENG LAI, HAN TSUNG HSUEH, JUI YING LIN, WEN YUNG YEH, JIM YONG CHI
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Publication number: 20090114931Abstract: A method for forming a pixel of an LED light source is provided. The method includes following steps: forming a first layer on a substrate; forming a second layer and a first light-emitting active layer on the first layer; exposing a portion of an upper surface of the first layer; forming a third layer on the substrate; forming a fourth layer and a second light-emitting active layer on the third layer; exposing a portion of an upper surface of the third layer; and forming a first electrode on the exposed upper surface of the first layer, a second electrode on a portion of an upper surface of the second layer, a third electrode on the exposed upper surface of the third layer, and a fourth electrode a portion of an upper surface of the fourth layer. The first light-emitting active layer and the second light-emitting active layer emit different colors of light.Type: ApplicationFiled: November 6, 2007Publication date: May 7, 2009Inventors: Han-Tsung Hsueh, Hsi-Hsuan Yen, Wen-Yung Yeh, Mu-Tao Chu
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Patent number: 7525246Abstract: An alternating current light-emitting device includes a substrate, an alternating current microdie light-emitting module, and a conductive structure. The alternating current microdie light-emitting module is formed on the substrate and has at least two microdies and a concave portion disposed between the two microdies. Each of the microdies has at least one active layer. The conductive structure electrically connects the microdies and thereby enables the active layers of the microdies to take turns to emit light during positive and negative half cycles of alternating current. The conductive structure is formed in the concave portion and covers an insulator. The present invention prevents undue open circuits but enhances yield.Type: GrantFiled: November 8, 2006Date of Patent: April 28, 2009Assignees: Industrial Technology Research Institute, Tyntek CorporationInventors: Hsi-Hsuan Yen, Wen-Yung Yeh, Chih-Shu Huang, Kuo Jui Huang, Ming-Te Lin
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Publication number: 20090096386Abstract: A light-emitting system includes a first power input terminal and a second power input terminal and five rectifying devices coupled between the two power input terminals. The first and second power input terminals may receive an external power input. The first rectifying device is coupled between the first power input terminal and a first intermediate contact. The second rectifying device is coupled between the second power input terminal and the first intermediate contact. The third rectifying device is coupled between a second intermediate contact and the second power input terminal. The fourth rectifying device is coupled between the second intermediate contact and the first power input terminal. The fifth rectifying device is coupled between the first intermediate contact and the second intermediate contact. The fifth rectifying device is configured to allow a current flow from the first intermediate contact to the second intermediate contact and to emit light in response to the current flow.Type: ApplicationFiled: October 7, 2008Publication date: April 16, 2009Inventors: Wen-Yung Yeh, Yu-Chen Yu, Hsi-Hsuan Yen, Jui-Ying Lin
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Patent number: 7474681Abstract: An alternating current light emitting device and the fabrication method includes forming one or more alternating current micro diode light emitting modules on a substrate, wherein the alternating current micro diode light emitting module has two micro diodes connected to one another, and each micro diode has at least two active layers and is electrically connected by a conductive structure, such that the active layers of each micro diode can take turns emitting light during the positive/negative half cycles of alternating current. A continuous and full-scale light emitting effect is thereby achieved.Type: GrantFiled: October 7, 2005Date of Patent: January 6, 2009Assignee: Industrial Technology Research InstituteInventors: Ming-Te Lin, Hsi-Hsuan Yen, Wen-Yung Yeh, Ming-Yao Lin, Sheng-Pan Huang
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Publication number: 20080149951Abstract: A light emitting device including a carrying element having two electric conductors connectable to a power source, a light emitting element disposed on the carrying element and electrically connected to the two electric conductors, and at least one correction element electrically connected to the light emitting element, wherein the light emitting element is adapted to provide a light source upon connection of the two electric conductors with the power source, and the at least one correction element allows the light emitting element to have functions of temperature compensation, voltage correction, or surge absorption.Type: ApplicationFiled: December 22, 2006Publication date: June 26, 2008Inventors: Ming-Te Lin, Hsi-Hsuan Yen, Ming-Yao Lin, Wen-Yung Yeh, Chia-Chang Kuo, Sheng-Pan Huang