Patents by Inventor Tsu Lee
Tsu Lee 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: 20240120410Abstract: A semiconductor structure includes a semiconductor epitaxial layer, a first semiconductor well, a second semiconductor well, a source doped region, a gate structure and a drain structure. The semiconductor epitaxial layer includes a first side and a second side opposite to the first side. The first semiconductor well is located on the first side of the semiconductor epitaxial layer. The second semiconductor well is located on the second side of the semiconductor epitaxial layer. The source doped region is located in the first semiconductor well. The gate structure overlaps the first semiconductor well and the source doped region on the first side of the semiconductor epitaxial layer. The drain structure includes a semiconductor substrate. The second side of the semiconductor epitaxial layer outside the second semiconductor well includes a connecting surface. The connecting surface of the semiconductor epitaxial layer is connected to the semiconductor substrate.Type: ApplicationFiled: February 16, 2023Publication date: April 11, 2024Inventors: Yu-Tsu LEE, Yan-Ru CHEN, Chao-Yi CHANG, Kuang-Hao CHIANG
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Publication number: 20240120411Abstract: A method of forming a semiconductor structure includes the following operations. A semiconductor epitaxial layer is formed on a first semiconductor substrate. A first side of the semiconductor epitaxial layer is adhered to a transfer substrate by an adhesive layer covering the first side of the semiconductor epitaxial layer. The semiconductor epitaxial layer and the first semiconductor substrate are turned over by the transfer substrate. The first semiconductor substrate is removed to expose a second side of the semiconductor epitaxial layer opposite to the first side. A first semiconductor doped region is formed on the second side of the semiconductor epitaxial layer. After the first semiconductor doped region is formed, the adhesive layer and the transfer substrate are removed.Type: ApplicationFiled: February 17, 2023Publication date: April 11, 2024Inventors: Yu-Tsu LEE, Yan-Ru CHEN, Liang-Ming LIU, Kuang-Hao CHIANG
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Patent number: 11894489Abstract: A semiconductor device and a method for manufacturing the same are provided. The semiconductor device includes a first semiconductor layer, an active region, a p-type or n-type layer, and a first metal element-containing structure. The first semiconductor layer has a surface including a first portion and a second portion. The active region is located on the first portion and includes AlGaInAs, InGaAsP, AlGaAsP or AlGaInP. The p-type or n-type layer includes an oxygen element (O) and a metal element, and is located on the second portion. The first metal element-containing structure is located on the p-type or n-type layer. The p-type or n-type layer physically contacts the first metal element-containing structure and the first semiconductor layer.Type: GrantFiled: March 16, 2021Date of Patent: February 6, 2024Assignee: EPISTAR CORPORATIONInventors: Min-Hsun Hsieh, Yu-Tsu Lee, Wei-Jen Hsueh
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Publication number: 20220302360Abstract: A semiconductor device is provided, which includes a semiconductor stack and a first contact structure. The semiconductor stack includes an active layer and has a first surface and a second surface. The first contact structure is located on the first surface and includes a first semiconductor layer, a first metal element-containing structure and a first p-type or n-type layer. The first metal element-containing structure includes a first metal element. The first p-type or n-type layer physically contacts the first semiconductor layer and the first metal element-containing structure. The first p-type or n-type layer includes an oxygen element (O) and a second metal element and has a thickness less than or equal to 20 nm, and the first semiconductor layer includes a phosphide compound or an arsenide compound.Type: ApplicationFiled: March 16, 2021Publication date: September 22, 2022Inventors: Yu-Tsu LEE, Yi-Yang CHIU, Chun-Wei CHANG, Min-Hao YANG, Wei-Jen HSUEH, Yi-Ming CHEN, Shih-Chang LEE, Chung-Hao WANG
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Publication number: 20220302346Abstract: A semiconductor device and a method for manufacturing the same are provided. The semiconductor device includes a first semiconductor layer, an active region, a p-type or n-type layer, and a first metal element-containing structure. The first semiconductor layer has a surface including a first portion and a second portion. The active region is located on the first portion and includes AlGaInAs, InGaAsP, AlGaAsP or AlGaInP. The p-type or n-type layer includes an oxygen element (O) and a metal element, and is located on the second portion. The first metal element-containing structure is located on the p-type or n-type layer. The p-type or n-type layer physically contacts the first metal element-containing structure and the first semiconductor layer.Type: ApplicationFiled: March 16, 2021Publication date: September 22, 2022Inventors: Min-Hsun HSIEH, Yu-Tsu LEE, Wei-Jen HSUEH
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Patent number: 10843182Abstract: Provided is a composite material including a plurality of porous silicate particles having a glass phase structure, a first active metal adsorbed into the glass phase structure of the porous silicate particles, and a modified layer containing a second active metal formed on the surfaces of the porous silicate particles. The porous silicate particles have an average pore diameter of from 3 nm to 50 nm, and the first active metal includes at least one of sodium, potassium, calcium, and magnesium.Type: GrantFiled: November 14, 2018Date of Patent: November 24, 2020Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Nien-Tsu Lee, Huan-Yi Hung, Chien-Wei Lu, Hsien-Hui Tai
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Publication number: 20190151837Abstract: Provided is a composite material including a plurality of porous silicate particles having a glass phase structure, a first active metal adsorbed into the glass phase structure of the porous silicate particles, and a modified layer containing a second active metal formed on the surfaces of the porous silicate particles. The porous silicate particles have an average pore diameter of from 3 nm to 50 nm, and the first active metal includes at least one of sodium, potassium, calcium, and magnesium.Type: ApplicationFiled: November 14, 2018Publication date: May 23, 2019Inventors: Nien-Tsu Lee, Huan-Yi Hung, Chien-Wei Lu, Hsien-Hui Tai
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Patent number: 8875373Abstract: A manufacturing method of heat conductive device for an LED has steps of forming a heat sink and an engagement recess in the heat sink by cold forge, punching a heat-conducting disc to form an LED carrier having a mounting portion and a heat-conducting wall formed around the mounting portion, soldering multiple LEDs on the LED carrier, and heating the heat sink to thermally expand the heat sink and assembling the LED carrier and the heat sink so that the heat-conducting wall is assembled with the engagement recess and further chilling the heat sink to thermally retract and tightly hold the LED carrier. The manufacturing method increases contact area and reduces air gaps between the LED carrier and the heat sink to effectively enhance the heat-conducting efficiency of the LED carrier so that the LEDs are operated at a suitable operating temperature to secure a prolonged life duration.Type: GrantFiled: September 16, 2011Date of Patent: November 4, 2014Assignee: Pan-Jit International Inc.Inventor: Tsu Lee
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Publication number: 20130070465Abstract: A heat conductive device for an LED has a heat sink and an LED carrier tightly fitted in the heat sink. The LED carrier has a mounting portion formed on one end thereof and having a first heat-conducting surface formed on a top of the mounting portion, and a heat-conducting portion formed along a perimeter of the mounting portion and having a second heat-conducting surface formed on the periphery of the heat-conducting portion. The first and second heat-conducting surfaces contact the engagement portion of the heat sink so that heat generated by LED operation is conducted to the heat sink through the heat-conducting portion, the first heat-conducting surface and the second heat-conducting surface. With the second heat-conducting surface of the LED carrier, heat can be more efficiently conducted to the heat sink and LEDs can be operated at an adequate operating temperature to prolong their life duration.Type: ApplicationFiled: September 19, 2011Publication date: March 21, 2013Inventor: Tsu LEE
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Publication number: 20120311849Abstract: A manufacturing method of heat conductive device for an LED has steps of forming a heat sink and an engagement recess in the heat sink by cold forge, punching a heat-conducting disc to form an LED carrier having a mounting portion and a heat-conducting wall formed around the mounting portion, soldering multiple LEDs on the LED carrier, and heating the heat sink to thermally expand the heat sink and assembling the LED carrier and the heat sink so that the heat-conducting wall is assembled with the engagement recess and further chilling the heat sink to thermally retract and tightly hold the LED carrier. The manufacturing method increases contact area and reduces air gaps between the LED carrier and the heat sink to effectively enhance the heat-conducting efficiency of the LED carrier so that the LEDs are operated at a suitable operating temperature to secure a prolonged life duration.Type: ApplicationFiled: September 16, 2011Publication date: December 13, 2012Applicant: PAN-JIT INTERNATIONAL INC.Inventor: Tsu Lee
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LED lighting device having heat convection and heat conduction effects dissipating assembly therefor
Patent number: 7841752Abstract: An LED lighting device having heat convection and heat conduction effects has a heat dissipating assembly, a substrate, multiple LEDs and a base. The heat dissipating assembly has a housing and an outer cover. The housing has multiple air holes. The outer cover is mounted on an open top of the housing and has multiple through holes and an exterior flue protruding from the outer cover and extending into the housing. The substrate is mounted inside the housing against the outer cover and has a hole allowing the exterior flue to extend therethrough. The LEDs are mounted on the substrate and respectively correspond to the through holes. The base is attached to a bottom of the housing. The exterior flue encourages heated air to move through the exterior flue and flow out of the housing via the air holes. With such continuous and directional air movement, the LED lighting device obtains good heat-dissipating efficiency.Type: GrantFiled: August 19, 2008Date of Patent: November 30, 2010Assignee: Pan-Jit International Inc.Inventor: Tsu Lee -
Patent number: 7810951Abstract: An LED module comprises a heat dissipating bracket, a substrate, multiple LED assemblies and two rotatable mounting assemblies. The heat dissipating bracket has a top panel, a bottom panel and multiple flues. Each flue connects a corresponding top hole of the top panel and a bottom hole of the bottom panel. The substrate is mounted on the bottom panel and has multiple independent through holes respectively corresponding to the flues. The LED assemblies are respectively mounted on the substrate between two adjacent through holes. The rotatable mounting assemblies are respectively connected to two ends of the heat dissipating bracket, wherein the heat dissipating bracket is adapted to change an illuminating direction of the LED assemblies by rotating with the rotatable mounting assemblies. With the heat dissipating bracket and the rotatable mounting assemblies, the LED module obtains good heat-dissipating efficiency and optimal light distribution.Type: GrantFiled: July 30, 2009Date of Patent: October 12, 2010Assignee: Pan-Jit International Inc.Inventors: Tsu Lee, Feng Ma, Jin-Yun Yang, Zhong-Lin Tang, Lei Zhao
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Publication number: 20090237932Abstract: An LED lighting device having heat convection and heat conduction effects has a heat dissipating assembly, a substrate, multiple LEDs and a base. The heat dissipating assembly has a housing and an outer cover. The housing has multiple air holes. The outer cover is mounted on an open top of the housing and has multiple through holes and an exterior flue protruding from the outer cover and extending into the housing. The substrate is mounted inside the housing against the outer cover and has a hole allowing the exterior flue to extend therethrough. The LEDs are mounted on the substrate and respectively correspond to the through holes. The base is attached to a bottom of the housing. The exterior flue encourages heated air to move through the exterior flue and flow out of the housing via the air holes. With such continuous and directional air movement, the LED lighting device obtains good heat-dissipating efficiency.Type: ApplicationFiled: August 19, 2008Publication date: September 24, 2009Applicant: PAN-JIT INTERNATIONAL INC.Inventor: Tsu Lee
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Patent number: 7286353Abstract: A heat dissipating apparatus includes a heat sink (20) having a base plate (22) for contacting an electronic component (10). A number of main fins (24) extend from the base plate. A cooling fan (30) is mounted on the heat sink. A center of the cooling fan offsets in a first direction from a center of the electronic component, so that a portion of the cooling fan that generates more and stronger airflows than the center of the cooling fan does is aligned with the center of the electronic component.Type: GrantFiled: October 3, 2005Date of Patent: October 23, 2007Assignees: Fu Zhun Precision Industry (Shenzhen) Co., Ltd., Foxconn Technology Co., Ltd.Inventors: Fang-Xiang Yu, Meng-Tsu Lee, Shu-Ho Lin, Jun Luo
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Patent number: 5238758Abstract: A method for forming an interpenetrating polymeric network containing a liquid electrolyte for use in solid state electrochemical cells which comprises forming a mixture of a liquid monomeric or prepolymeric radiation polymerizable, compound, a radiation inert ionically conducting liquid, and an ionizable alkaline metal salt; subjecting said mixture to actinic radiation to thereby crosslink said radiation polymerizable ionically conducting material and form a solid matrix containing said ionically conducting liquid; and electrode half elements and electrochemical cells incorporating said network.Type: GrantFiled: October 15, 1991Date of Patent: August 24, 1993Assignee: MHB Joint VentureInventors: Mei-Tsu Lee, Dale R. Shackle, Gerhart Schwab
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Patent number: 5037712Abstract: A method is described for forming a solid electrolyte comprising a polymeric network structure containing an ionically conducting liquid for use in solid state electrochemical cells which comprises forming a mixture of a crosslinkable polysiloxane or a crosslinkable polyethylene oxide, an ionically conducting liquid, and an ionizable ammonium or alkali metal salt, and subjecting said mixture to actinic radiation to thereby crosslink said crosslinkable polysiloxane or crosslinkable polyethylene oxide to form a solid matrix through which said ionically conducting liquid interpenetrates to provide continuous paths of high conductivity in all directions throughout said matrix.Type: GrantFiled: April 6, 1990Date of Patent: August 6, 1991Assignee: Ultracell, Inc.Inventors: Dale R. Shackle, Mei-Tsu Lee
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Patent number: 4990413Abstract: A composite solid electrolyte comprising a mixture of a solid ionically conductive powder and an ionically conductive polymeric material wherein said polymeric material provides a network for containing said solid ionically conductive powder, and a method for producing the electrolyte is disclosed.Type: GrantFiled: January 18, 1989Date of Patent: February 5, 1991Assignee: MHB Joint VentureInventors: Mei-Tsu Lee, Denis Fauteux
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Patent number: 4830939Abstract: A method for forming an interpenetrating polymeric network containing a liquid electrolyte for use in solid state electrochemical cells which comprises forming a mixture of a liquid monomeric or prepolymeric radiation polymerizable, compound, a radiation inert ionically conducting liquid, and an ionizable alkaline metal salt; subjecting said mixture to actinic radiation to thereby crosslink said radiation polymerizable ionically conducting material and form a solid matrix containing said ionically conducting liquid; and electrode half elements and electrochemical cells incorporating said network.Type: GrantFiled: March 25, 1988Date of Patent: May 16, 1989Assignee: MHB Joint VentureInventors: Mei-Tsu Lee, Dale R. Shackle, Gerhart Schwab
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Patent number: D636106Type: GrantFiled: February 5, 2010Date of Patent: April 12, 2011Assignee: Pan-Jit International Inc.Inventors: Tsu Lee, Zhong-Lin Tang, Lei Zhao, Chun Kin Patrick Chan, Feng Ma, Jin-Yun Yang
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Patent number: D678579Type: GrantFiled: February 25, 2011Date of Patent: March 19, 2013Assignee: Pan-Jit International Inc.Inventors: Tsu Lee, Zhong-Lin Tang, Lei Zhao, Chun Kin Patrick Chan, Feng Ma, Jin-Yun Yang