Patents by Inventor Shengmei Zheng
Shengmei Zheng 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: 9857032Abstract: A LED lighting device is disclosed, which includes a LED lighting source, a printed circuit board, a heat sink and a transparent cover. The LED lighting source is provided on the printed circuit board, and the cover is attached to the heat sink for protecting the LED lighting source and the printed circuit board. The LED lighting device further includes a rivet made of plastics, which is used to fix the printed circuit board to the heat sink.Type: GrantFiled: September 27, 2012Date of Patent: January 2, 2018Assignee: Ledvance GmbHInventors: Aiai Li, Tingming Liu, Yusheng Ming, Shengmei Zheng
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Patent number: 9689557Abstract: A light-emitting device having a cover (1), a heat sink (2) and a light-emitting assembly (3), wherein the heat sink (2) has at least one first locking part (a), the cover (1) has at least one second locking part (b) corresponding to the first locking part (a), the second locking part (b) engages with the first locking part (a) to form an enclosed cavity (5) for the light-emitting assembly (3), and the second locking part (b) has a pressing part (b1) pressing the light-emitting assembly (3) against the heat sink (2).Type: GrantFiled: June 4, 2012Date of Patent: June 27, 2017Assignee: OSRAM GmbHInventors: Peng Chen, Hao Li, Tingming Liu, Shengmei Zheng
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Publication number: 20150292725Abstract: Various embodiments may relate to a lighting device, including an electronic device housing, an electrical connecting part mounted at one side of the electronic device housing, a heat sink mounted at the other side of the electronic device housing, and a plurality of light sources arranged on the heat sink. The heat sink is made of a transparent material and forms at least a part of a light emergent surface for the light from the light sources.Type: ApplicationFiled: November 8, 2013Publication date: October 15, 2015Inventors: Tingming Liu, Jianghui Yang, Shengmei Zheng, Aiai Li
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Publication number: 20150003041Abstract: A lighting device may include a circuit board with at least one LED chip thereon, sidewalls extending from the circuit board, and a phosphor cover supported on the sidewalls, wherein the circuit board, the phosphor cover, and the sidewalls define a cavity accommodating at least one LED chip, wherein the lighting device further comprises at least one optical member arranged in the cavity, and the optical member has an adjustable reflectivity to adjust the spectral power distribution of emitted light through the phosphor cover and/or the CCT of the emitted light.Type: ApplicationFiled: December 5, 2012Publication date: January 1, 2015Inventors: Shengmei Zheng, Peng Chen, Chuanpeng Zhong, Yusheng Ming
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Publication number: 20140321123Abstract: A LED lighting device is disclosed, which includes a LED lighting source, a printed circuit board, a heat sink and a transparent cover. The LED lighting source is provided on the printed circuit board, and the cover is attached to the heat sink for protecting the LED lighting source and the printed circuit board. The LED lighting device further includes a rivet made of plastics, which is used to fix the printed circuit board to the heat sink.Type: ApplicationFiled: September 27, 2012Publication date: October 30, 2014Inventors: Aiai Li, Tingming Liu, Yusheng Ming, Shengmei Zheng
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Publication number: 20140233211Abstract: In various embodiments, a luminaire may include: two or more groups of light emitting elements, each group of light emitting elements having respective wavelength range; and a fluorescence component being capable of generating fluorescence under excitation of the light emitted from said light emitting elements, wherein said fluorescence component is spaced apart from said light emitting elements in a light propagation direction of said light emitting elements, and the light of each group of said light emitting elements is combined with said fluorescence into white light.Type: ApplicationFiled: August 9, 2012Publication date: August 21, 2014Applicant: OSRAM GMBHInventors: Peng Chen, Aiai Li, Tingming Liu, Shengmei Zheng
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Publication number: 20140233230Abstract: In various embodiments, an LED luminary may include: a plurality of LED light emitting elements; and an installation component for installing the plurality of LED light emitting elements in the LED luminary, wherein the plurality of LED light emitting elements are installed so that the LED light emitting elements are not on the same plane. In various embodiments, a method for fabricating an LED luminary may include: preparing an installation component; and installing a plurality of LED light emitting elements in the LED luminary through the installation component so that the LED light emitting elements are not on the same plane.Type: ApplicationFiled: August 24, 2012Publication date: August 21, 2014Applicant: OSRAM GMBHInventors: Peng Chen, Tingming Liu, Shengmei Zheng, Chuanpeng Zhong
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Publication number: 20140160726Abstract: A lighting device may include a circuit board, at least one LED lighting chip provided on one side of the circuit board, and a phosphor layer arranged to enclose the LED lighting chip, wherein the phosphor layer has different thicknesses at different light emergence angles.Type: ApplicationFiled: July 12, 2012Publication date: June 12, 2014Applicant: OSRAM GMBHInventors: Peng Chen, Tingming Liu, Shengmei Zheng
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Publication number: 20140140074Abstract: A light-emitting device, comprising: a cover (1), a heat sink (2) and a light-emitting assembly (3), wherein the heat sink (2) has at least one first locking part (a), the cover (1) has at least one second locking part (b) corresponding to the first locking part (a), the second locking part (b) engages with the first locking part (a) to form an enclosed cavity (5) for the light-emitting assembly (3), and the second locking part (b) has a pressing part (b1) pressing the light-emitting assembly (3) against the heat sink (2).Type: ApplicationFiled: June 4, 2012Publication date: May 22, 2014Inventors: Peng Chen, Hao Li, Tingming Liu, Shengmei Zheng
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Patent number: 7985971Abstract: A method of making a thin gallium-nitride (GaN)-based semiconductor structure is provided. According to one embodiment of the invention, the method includes the steps of providing a substrate; sequentially forming one or more semiconductor layers on the substrate; etching a pattern in the one or more semiconductor layers; depositing a dielectrics layer; forming a photoresist on a portion of the dielectrics layer, wherein the portion of the dielectrics layer is deposited on the one or more semiconductor layers; depositing a primer; removing the photoresist layer, wherein the primer on the photoresist is also removed; depositing a superhard material, wherein the superhard material forms in the pattern; and removing the substrate. Accordingly, the superhard material may be selectively deposited in only areas where the superhard material is desired. Vertical GaN-based light emitting devices may then be formed by cutting the semiconductor structure.Type: GrantFiled: March 31, 2009Date of Patent: July 26, 2011Assignee: Hong Kong Applied Science and Technology Research Institute Co. Ltd.Inventors: Yong Cai, Hung Shen Chu, Shengmei Zheng, Ka Wah Chan
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Patent number: 7847306Abstract: A light emitting diode device which, in use, has its light emitting region occupying a plane substantially perpendicular to a plane occupied by the surface on which the device is mounted. The primary light emission directions of the light emitting region are parallel to the surface on which the device is mounted. The device may have both its p-type and n-type semiconductor layers passivated by a layer or layers of light transmissive materials. There is a method for fabricating and mounting such a device. A plurality of the light emitting diode devices can be used in a lighting assembly for providing a plurality of independently controllable lit regions.Type: GrantFiled: October 27, 2006Date of Patent: December 7, 2010Assignee: Hong Kong Applied Science and Technology Research Insitute Company, Ltd.Inventors: Jian Feng, Hung-Shen Chu, Shengmei Zheng
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Patent number: 7834373Abstract: A semiconductor device has a current spreading layer between a semiconductor material and an electrode for connecting the semiconductor material to an electrical power supply. The current spreading layer has two or more sub-layers of a first conductive material with patterned regions of a second conductive material distributed between the sub-layers for spreading an electrical current passing between the electrode and the semiconductor material. The second material has an ohmic resistance lower than the first material.Type: GrantFiled: December 12, 2006Date of Patent: November 16, 2010Assignee: Hong Kong Applied Science and Technology Research Institute Company LimitedInventors: Jian Feng, Hung-Shen Chu, Shengmei Zheng
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Patent number: 7800122Abstract: A light emitting diode device includes a multi-layer stack of materials including a p-layer, a n-layer, and a light generating region for emission of light in a primary emission direction towards one of the p- and n-layers; a substantially transparent layer located at or adjacent said one of the p- and n-layers, having a first surface facing said one of the p- and n-layers and an opposed second surface; and a reflective surface formed at or adjacent the second surface of the transparent layer for directing at least a portion of the emitted light in a direction away from the primary emission direction so as to enhance light emission from a side of the light emitting diode device.Type: GrantFiled: September 7, 2006Date of Patent: September 21, 2010Assignee: Hong Kong Applied Science and Technology Research Institute Co., ltd.Inventors: Kuo An Chiu, Jian Feng, Huaijun Peng, Hung Shen Chu, Shengmei Zheng
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Publication number: 20090218590Abstract: A method of making a thin gallium-nitride (GaN)-based semiconductor structure is provided. According to one embodiment of the invention, the method includes the steps of providing a substrate; sequentially forming one or more semiconductor layers on the substrate; etching a pattern in the one or more semiconductor layers; depositing a dielectrics layer; forming a photoresist on a portion of the dielectrics layer, wherein the portion of the dielectrics layer is deposited on the one or more semiconductor layers; depositing a primer; removing the photoresist layer, wherein the primer on the photoresist is also removed; depositing a superhard material, wherein the superhard material forms in the pattern; and removing the substrate. Accordingly, the superhard material may be selectively deposited in only areas where the superhard material is desired. Vertical GaN-based light emitting devices may then be formed by cutting the semiconductor structure.Type: ApplicationFiled: March 31, 2009Publication date: September 3, 2009Applicant: Hong Kong Applied Science and Technology Research InstituteInventors: Yong Cai, HungShen Chu, Shengmei Zheng, Ka Wah Chan
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Publication number: 20080135867Abstract: A semiconductor device has a current spreading layer between a semiconductor material and an electrode for connecting the semiconductor material to an electrical power supply. The current spreading layer has two or more sub-layers of a first conductive material with patterned regions of a second conductive material distributed between the sub-layers for spreading an electrical current passing between the electrode and the semiconductor material. The second material has an ohmic resistance lower than the first material.Type: ApplicationFiled: December 12, 2006Publication date: June 12, 2008Inventors: Jian Feng, Hung-Shen Chu, Shengmei Zheng
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Publication number: 20080101062Abstract: A light source for a lighting device has a reflector for receiving one or more light emitting diode devices. The reflector has reflective sides and a light exit. There is a side emitting LED device located in the reflector such that its primary light emitting direction towards the reflective sides such that light emitted from the LED device are reflected towards the light exit.Type: ApplicationFiled: July 24, 2007Publication date: May 1, 2008Inventors: Jian Feng, Shengmei Zheng, Yong Cai, Hung-Shen Chu
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Publication number: 20080093607Abstract: A light emitting diode device which, in use, has its light emitting region occupying a plane substantially perpendicular to a plane occupied by the surface on which the device is mounted. The primary light emission directions of the light emitting region are parallel to the surface on which the device is mounted. The device may have both its p-type and n-type semiconductor layers passivated by a layer or layers of light transmissive materials. There is a method for fabricating and mounting such a device. A plurality of the light emitting diode devices can be used in a lighting assembly for providing a plurality of independently controllable lit regions.Type: ApplicationFiled: October 27, 2006Publication date: April 24, 2008Inventors: Jian Feng, Hung-Shen Chu, Shengmei Zheng
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Publication number: 20080061310Abstract: A light emitting diode device includes a multi-layer stack of materials including a p-layer, a n-layer, and a light generating region for emission of light in a primary emission direction towards one of the p- and n-layers; a substantially transparent layer located at or adjacent said one of the p- and n-layers, having a first surface facing said one of the p- and n-layers and an opposed second surface; and a reflective surface formed at or adjacent the second surface of the transparent layer for directing at least a portion of the emitted light in a direction away from the primary emission direction so as to enhance light emission from a side of the light emitting diode device.Type: ApplicationFiled: September 7, 2006Publication date: March 13, 2008Applicant: Hong Kong Applied Science and Technology Research Institute Company LimitedInventors: Kuo An Chiu, Jian Feng, Huaijun Peng, Hung-Shen Chu, Shengmei Zheng