Patents by Inventor Yan Huo
Yan Huo 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: 20150357268Abstract: A power semiconductor package with a small footprint and a preparation method thereof are disclosed. The first semiconductor chip and second semiconductor chip are attached on the front and back sides of a die paddle. Conductive pads are then attached on the electrodes at the top surfaces of the first and second semiconductor chips flowed by the formation of a plastic package body covering the die paddle, first and second semiconductor chips, the conductive pads, where a side surface of a conductive pad is exposed from a side surface of the plastic package body.Type: ApplicationFiled: June 7, 2014Publication date: December 10, 2015Applicant: Alpha and Omega Semiconductor (Cayman), LtdInventors: Hongtao Gao, Jun Lu, Ming-Chen Lu, Jianxin Ye, Yan Huo, Hua Pan
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Publication number: 20150325500Abstract: A small and ultra-thin power semiconductor device and a preparation method are disclosed. The device includes a chip mounting unit with a plurality of pads with a plate arranged on top surface of each pad; a semiconductor chip flipped and attached on the chip mounting unit, where the electrodes at the front of the chip are electrically connected to the pads; a plastic packaging body covering the chip mounting units and the chip, where the top surface of the plate and the back surface of the chip are exposed out from top surface of the plastic packaging body and the bottom surfaces of the pads are exposed out of the bottom surface of the plastic packaging body; a plurality of top metal segments arranged on the top surface of the plastic packaging body and electrically connected to the top surface of each plate and the back surface of the chip.Type: ApplicationFiled: July 21, 2015Publication date: November 12, 2015Applicant: Alpha and Omega Semiconductor (Cayman) Ltd.Inventor: Yan - Huo
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Publication number: 20150279766Abstract: A semiconductor device with thick bottom metal comprises a semiconductor chip covered with a top plastic package layer at its front surface and a back metal layer at its back surface, the top plastic package layer surrounds sidewalls of the metal bumps with a top surface of the metal bumps exposing from the top plastic package layer, a die paddle for the semiconductor chip to mount thereon and a plastic package body.Type: ApplicationFiled: June 12, 2015Publication date: October 1, 2015Inventors: Hamza Yilmaz, Yan Xun Xue, Jun Lu, Ming-Chen Lu, Yan Huo, Aihua Lu
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Publication number: 20150255377Abstract: A small and ultra-thin power semiconductor device and a preparation method are disclosed. The device includes a chip mounting unit with a plurality of pads with a plate arranged on top surface of each pad; a semiconductor chip flipped and attached on the chip mounting unit, where the electrodes at the front of the chip are electrically connected to the pads; a plastic packaging body covering the chip mounting units and the chip, where the top surface of the plate and the back surface of the chip are exposed out from top surface of the plastic packaging body and the bottom surfaces of the pads are exposed out of the bottom surface of the plastic packaging body; a plurality of top metal segments arranged on the top surface of the plastic packaging body and electrically connected to the top surface of each plate and the back surface of the chip.Type: ApplicationFiled: March 9, 2014Publication date: September 10, 2015Inventor: Yan Huo
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Patent number: 9117809Abstract: A preparation method of small and ultra-thin power semiconductor device comprising the steps of: providing a chip mounting unit with a plurality of pads with a plate arranged on top surface of each pad; flipping and attaching a semiconductor chip on the chip mounting unit, where the electrodes at the front of the chip are electrically connected to the pads; forming a plastic packaging body covering the chip mounting units and the chip, where the top surface of the plate and the back surface of the chip are exposed out from top surface of the plastic packaging body and the bottom surfaces of the pads are exposed out of the bottom surface of the plastic packaging body; forming a plurality of top metal segments arranged on the top surface of the plastic packaging body and electrically connected to the top surface of each plate and the back surface of the chip.Type: GrantFiled: March 9, 2014Date of Patent: August 25, 2015Assignee: Alpha & Omega Semiconductor (Cayman), Ltd.Inventor: Yan Huo
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Publication number: 20150236005Abstract: A hybrid packaging multi-chip semiconductor device comprises a lead frame unit, a first semiconductor chip, a second semiconductor chip, a first interconnecting structure and a second interconnecting structure, wherein the first semiconductor chip is attached on a first die paddle and the second semiconductor chip is flipped and attached on a third pin and a second die paddle, the first interconnecting structure electrically connecting a first electrode at a front surface of the first semiconductor chip and a third electrode at a back surface of the second semiconductor chip and a second electrode at the front surface of the first semiconductor chip is electrically connected by second interconnecting structure.Type: ApplicationFiled: May 2, 2015Publication date: August 20, 2015Inventors: Hamza Yilmaz, Yan Xun Xue, Jun Lu, Peter Wilson, Yan Huo, Zhiqiang Niu, Ming-Chen Lu
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Patent number: 9087828Abstract: A semiconductor device with thick bottom metal comprises a semiconductor chip covered with a top plastic package layer at its front surface and a back metal layer at its back surface, the top plastic package layer surrounds sidewalls of the metal bumps with a top surface of the metal bumps exposing from the top plastic package layer, a die paddle for the semiconductor chip to mount thereon and a plastic package body.Type: GrantFiled: March 12, 2013Date of Patent: July 21, 2015Assignee: Alpha & Omega Semiconductor IncorporatedInventors: Hamza Yilmaz, Yan Xun Xue, Jun Lu, Ming-Chen Lu, Yan Huo, Aihua Lu
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Patent number: 9087378Abstract: This invention discloses a method for object tracking, including determination of an area scaling ratio of the object in a video image sequence. In one embodiment, a centroid of the object is determined. One or more directed straight lines are selected, each passing through the centroid, extending from an end of the object's boundary to an opposite end thereof, and having a direction that is upward. A length scaling ratio for each directed straight line is determined by: determining a motion vector for each selected pixel on the line; computing a scalar component of the motion vector projected onto the line; estimating a change of the line's length according to the scalar components obtained for all pixels; and determining the length scaling ratio according to the change of the line's length. The area scaling ratio is computed based on the length scaling ratios for all directed straight lines.Type: GrantFiled: June 29, 2012Date of Patent: July 21, 2015Assignee: Hong Kong Applied Science and Technology Research Institute Company LimitedInventors: Chunhui Cui, Chun-Fu Chen, Ciao-Siang Siao, Gwo Giun Lee, Yan Huo
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Patent number: 9054091Abstract: A hybrid packaging multi-chip semiconductor device comprises a lead frame unit, a first semiconductor chip, a second semiconductor chip, a first interconnecting structure and a second interconnecting structure, wherein the first semiconductor chip is attached on a first die paddle and the second semiconductor chip is flipped and attached on a third pin and a second die paddle, the first interconnecting structure electrically connecting a first electrode at a front surface of the first semiconductor chip and a third electrode at a back surface of the second semiconductor chip and a second electrode at the front surface of the first semiconductor chip is electrically connected by second interconnecting structure.Type: GrantFiled: June 10, 2013Date of Patent: June 9, 2015Assignee: Alpha & Omega Semiconductor, Inc.Inventors: Hamza Yilmaz, Yan Xun Xue, Jun Lu, Peter Wilson, Yan Huo, Zhiqiang Niu, Ming-Chen Lu
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Publication number: 20140361420Abstract: A hybrid packaging multi-chip semiconductor device comprises a lead frame unit, a first semiconductor chip, a second semiconductor chip, a first interconnecting structure and a second interconnecting structure, wherein the first semiconductor chip is attached on a first die paddle and the second semiconductor chip is flipped and attached on a third pin and a second die paddle, the first interconnecting structure electrically connecting a first electrode at a front surface of the first semiconductor chip and a third electrode at a back surface of the second semiconductor chip and a second electrode at the front surface of the first semiconductor chip is electrically connected by second interconnecting structure.Type: ApplicationFiled: June 10, 2013Publication date: December 11, 2014Inventors: Hamza Yilmaz, Yan Xun Xue, Jun Lu, Peter Wilson, Yan Huo, Zhiqiang Niu, Ming-Chen Lu
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Publication number: 20140264802Abstract: A semiconductor device with thick bottom metal comprises a semiconductor chip covered with a top plastic package layer at its front surface and a back metal layer at its back surface, the top plastic package layer surrounds sidewalls of the metal bumps with a top surface of the metal bumps exposing from the top plastic package layer, a die paddle for the semiconductor chip to mount thereon and a plastic package body.Type: ApplicationFiled: March 12, 2013Publication date: September 18, 2014Inventors: Hamza Yilmaz, Yan Xun Xue, Jun Lu, Ming-Chen Lu, Yan Huo, Aihua Lu
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Patent number: 8703545Abstract: A semiconductor package is provided with an Aluminum alloy lead-frame without noble metal plated on the Aluminum base lead-frame. Aluminum alloy material with proper alloy composition and ratio for making an aluminum alloy lead-frame is provided. The aluminum alloy lead-frame is electroplated with a first metal electroplating layer, a second electroplating layer and a third electroplating layer in a sequence. The lead-frame electroplated with the first, second and third metal electroplating layers is then used in the fabrication process of a power semiconductor package including chip connecting, wire bonding, and plastic molding. After the molding process, the area of the lead-frame not covered by the molding compound is electroplated with a fourth metal electroplating layer that is not easy to be oxidized when exposing to air.Type: GrantFiled: February 29, 2012Date of Patent: April 22, 2014Assignee: Alpha & Omega Semiconductor, Inc.Inventors: Zhiqiang Niu, Ming-Chen Lu, Yan Xun Xue, Yan Huo, Hua Pan, Guo Feng Lian, Jun Lu
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Publication number: 20140003741Abstract: This invention discloses a method for determining an area scaling ratio of an object in a video image sequence. In one embodiment, a centroid of the object is determined. One or more directed straight lines are selected, each passing through the centroid, extending from an end of the object's boundary to an opposite end thereof, and having a direction that is upward. A length scaling ratio for each directed straight line is determined by: determining a motion vector for each selected pixel on the line; computing a scalar component of the motion vector projected onto the line; estimating a change of the line's length according to the scalar components obtained for all pixels; and determining the length scaling ratio according to the change of the line's length. The area scaling ratio is computed based on the length scaling ratios for all directed straight lines.Type: ApplicationFiled: June 29, 2012Publication date: January 2, 2014Applicant: Hong Kong Applied Science and Technology Research Institute Company LimitedInventors: Chunhui Cui, Chun-Fu Chen, Ciao-Siang Siao, Gwo Giun LEE, Yan Huo
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Publication number: 20130221507Abstract: A semiconductor package is provided with an Aluminum alloy lead-frame without noble metal plated on the Aluminum base lead-frame. Aluminum alloy material with proper alloy composition and ratio for making an aluminum alloy lead-frame is provided. The aluminum alloy lead-frame is electroplated with a first metal electroplating layer, a second electroplating layer and a third electroplating layer in a sequence. The lead-frame electroplated with the first, second and third metal electroplating layers is then used in the fabrication process of a power semiconductor package including chip connecting, wire bonding, and plastic molding. After the molding process, the area of the lead-frame not covered by the molding compound is electroplated with a fourth metal electroplating layer that is not easy to be oxidized when exposing to air.Type: ApplicationFiled: February 29, 2012Publication date: August 29, 2013Inventors: Zhiqiang Niu, Ming-Chen Lu, Yan Xun Xue, Yan Huo, Hua Pan, Guo Feng Lian, Jun Lu
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Patent number: 8498330Abstract: Method and apparatus for providing a fast and accurate video coding process are disclosed. After checking the coding history of certain coded video frame units of a video, the order of the inter prediction and the intra prediction is adaptively exchanged for each coding video frame unit of an inter frame. Furthermore, the computations for coding modes in the latter part of the computation order are selectively skipped so as to speed up the coding process without degrading the video quality.Type: GrantFiled: June 29, 2009Date of Patent: July 30, 2013Assignee: Hong Kong Applied Science and Technology Research Institute Company LimitedInventors: Yan Ho Kam, Wan Chi Siu, Yui Lam Chan, Wai Lam Hui, Wai Hong Wong, Ka Man Cheng, Yan Huo
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Patent number: 8326050Abstract: This invention relates to method and apparatus for subpixel-based down-sampling. This invention implements an adaptive filter 140 based on edge detection, which removes visible color fringing artifacts while efficiently retaining sharpness.Type: GrantFiled: December 2, 2008Date of Patent: December 4, 2012Assignee: Hong Kong Applied Science and Technology Research Institute Company LimitedInventors: Oscar Chi-Lim Au, Lu Fang, Hon Wah Wong, Yi Yang, Yan Huo
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Patent number: 8259819Abstract: The present invention relates to method and apparatus for improving video quality. The present invention provides a unified loop filter including: a pixel determining unit which determines the type of a pixel based on boundary strength; a similarity transforming unit which transforms a nonlinear filter into a nonlinear similarity-ordered statistics filter; and an integrating unit which integrates the nonlinear similarity-ordered statistics filter with a linear image filtering portion. The unified loop filter is applicable to filter reconstructed frames when an encoder or a decoder is processing a video signal.Type: GrantFiled: December 10, 2009Date of Patent: September 4, 2012Assignee: Hong Kong Applied Science and Technology Research Institute Company LimitedInventors: Yu Liu, Yan Huo, Ka Man Cheng
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Patent number: 8228983Abstract: The invention is used in video coding. Systems, apparatuses and methods for processing an order-16 integer transform from an order-8 transform are provided. The order-16 transform method involves expanding an order-8 transform by generating an order-16 integer matrix and a scaling matrix.Type: GrantFiled: December 4, 2007Date of Patent: July 24, 2012Assignees: Hong Kong Applied Science and Technology Research, Institute Company LimitedInventors: Wai-Kuen Cham, Chi Keung Fong, Jie Dong, King Ngi Ngan, Hoi Ming Wong, Lu Wang, Yan Huo, Thomas H. Y. Pun
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Patent number: 8165211Abstract: The presently claimed invention adaptively selects a local de-interlacing method according to information from a compressed video bitstream. According to one embodiment, successive images from a video bitstream are first reconstructed. Syntax elements, selected from a macroblock type, a macroblock partition, a motion vector, a distance from a reference frame, the existence of non-zero transform coefficients and the distribution of transform coefficients, are then extracted from this bitstream. Based on the syntax elements, a de-interlacing algorithm is decided from an algorithm set for each image region in a video frame. Algorithms in the algorithm set include motion compensation, edge-based line averaging, and line averaging. Each image region is thereby interpolated using the de-interlacing algorithm and complementary motion compensation. The complementary motion compensation de-interlaces the image region using an inverse of motion vectors extracted from a bitstream clip representing neighboring frames.Type: GrantFiled: May 30, 2008Date of Patent: April 24, 2012Assignee: Hong Kong Applied Science and Technology Research Institute Company LimitedInventors: King Ngi Ngan, Jie Dong, Yan Huo
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Patent number: 8063006Abstract: The invention relates to an aqueous cleaning composition for wafers with copper wires that have been treated by chemical mechanical planarization in an integrated circuit processing, comprising 0.1 to 15 wt % of a nitrogen-containing heterocyclic organic base, 0.1 to 35 wt % of an alcohol amine and water. Upon contact with copper-containing semiconductor wafers that have been treated by chemical mechanical planarization for an effective period of time, the aqueous cleaning composition can effectively remove residual contaminants from the surfaces of the wafers, and simultaneously provide the copper-containing semiconductor wafers with a better surface roughness.Type: GrantFiled: May 18, 2006Date of Patent: November 22, 2011Assignee: Epoch Material Co., Ltd.Inventors: Chien Ching Chen, Wen Cheng Liu, Jing-Chiuan Shiue, Teng Yan Huo