Patents by Inventor Keng-Chuan Chang
Keng-Chuan 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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Patent number: 11852302Abstract: A light-emitting unit, having a substrate; a first light-emitting body formed on the substrate, and having a first longer side and a first shorter side; a second light-emitting body formed on the substrate, and having a second longer side and a second shorter side which is parallel to the first longer side; a third light-emitting body formed on the substrate, having a third longer side and a third shorter side which is parallel to the first longer side, and electrically connected to the first light-emitting body and the second light-emitting body; a first electrode covering the first light-emitting body and the second light-emitting body, and electrically connecting to the first light-emitting body; a second electrode separated from the first electrode, and covering the second light-emitting body without covering the first light-emitting body; and a transparent element enclosing the first light-emitting body, the second light-emitting body, and the third light-emitting body.Type: GrantFiled: March 7, 2022Date of Patent: December 26, 2023Assignee: EPISTAR CORPORATIONInventors: Wei-Chiang Hu, Keng-Chuan Chang, Chiu-Lin Yao, Chun-Wei Lin, Jung-Chang Sun
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Publication number: 20230093533Abstract: A charging system based on a master-slave relationship includes a master charging device coupled with a target device, and at least one slave charging device electrically connected with the master charging device. An edge slave charging device among the at least one slave charging device is coupled with a power source. The master charging device determines a power-output distribution of the master charging device and the at least one slave charging device, and notifies the at least one slave charging device of the power-output distribution. The at least one slave charging device provides a supplementary power to the master charging device according to the power-output distribution. The master charging device further provides a specific power for the target device based on the supplementary power, so as to charge the target device in cooperation with the at least one slave charging device.Type: ApplicationFiled: September 22, 2021Publication date: March 23, 2023Inventors: Tzu Chieh SU, Keng Chuan CHANG, Hsiu Ming YANG
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Publication number: 20220186887Abstract: A light-emitting unit, having a substrate; a first light-emitting body formed on the substrate, and having a first longer side and a first shorter side; a second light-emitting body formed on the substrate, and having a second longer side and a second shorter side which is parallel to the first longer side; a third light-emitting body formed on the substrate, having a third longer side and a third shorter side which is parallel to the first longer side, and electrically connected to the first light-emitting body and the second light-emitting body; a first electrode covering the first light-emitting body and the second light-emitting body, and electrically connecting to the first light-emitting body; a second electrode separated from the first electrode, and covering the second light-emitting body without covering the first light-emitting body; and a transparent element enclosing the first light-emitting body, the second light-emitting body, and the third light-emitting body.Type: ApplicationFiled: March 7, 2022Publication date: June 16, 2022Inventors: Wei-Chiang HU, Keng-Chuan CHANG, Chiu-Lin YAO, Chun-Wei LIN, Jung-Chang SUN
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Patent number: 11268659Abstract: A lighting apparatus comprises: a board, a plurality of light-emitting units disposed on the board, and a package structure enclosing all of the light-emitting units and having a volume less than 5000 mm3. The lighting apparatus has a light intensity greater than 150 lumens.Type: GrantFiled: May 29, 2020Date of Patent: March 8, 2022Assignee: EPISTAR CORPORATIONInventors: Wei-Chiang Hu, Keng-Chuan Chang, Chiu-Lin Yao, Chun-Wei Lin, Jung-Chang Sun
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Patent number: 11270888Abstract: A device includes a source/drain (S/D) in a substrate and adjacent to a gate structure, wherein the S/D comprises a protrusion extending from a top surface of the S/D, and the protrusion has a tapered profile. The device further includes a contact plug electrically connected to the protrusion.Type: GrantFiled: May 7, 2020Date of Patent: March 8, 2022Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.Inventors: Chia-Yang Wu, Shiu-Ko Jangjian, Keng-Chuan Chang, Ting-Siang Su
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Publication number: 20200300416Abstract: A lighting apparatus comprises: a board, a plurality of light-emitting units disposed on the board, and a package structure enclosing all of the light-emitting units and having a volume less than 5000 mm3. The lighting apparatus has a light intensity greater than 150 lumens.Type: ApplicationFiled: May 29, 2020Publication date: September 24, 2020Inventors: Wei-Chiang HU, Keng-Chuan CHANG, Chiu-Lin YAO, Chun-Wei LIN, Jung-Chang SUN
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Publication number: 20200266069Abstract: A device includes a source/drain (S/D) in a substrate and adjacent to a gate structure, wherein the S/D comprises a protrusion extending from a top surface of the S/D, and the protrusion has a tapered profile. The device further includes a contact plug electrically connected to the protrusion.Type: ApplicationFiled: May 7, 2020Publication date: August 20, 2020Inventors: Chia-Yang WU, Shiu-Ko JANGJIAN, Keng-Chuan CHANG, Ting-Siang SU
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Patent number: 10670192Abstract: A lighting apparatus comprises: a board, a plurality of light-emitting units disposed on the board, and a package structure enclosing all of the light-emitting units and having a volume less than 5000 mm3. The lighting apparatus has a light intensity greater than 150 lumens.Type: GrantFiled: March 26, 2018Date of Patent: June 2, 2020Assignee: EPISTAR CORPORATIONInventors: Wei-Chiang Hu, Keng-Chuan Chang, Chiu-Lin Yao, Chun-Wei Lin, Jung-Chang Sun
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Patent number: 10658186Abstract: A method of forming a semiconductor device includes depositing a titanium-containing material over a source/drain (S/D), wherein an energy of depositing the titanium-containing material is sufficient to cause re-deposition of a material of the S/D along sidewalls of a dielectric layer adjacent the S/D to form protrusions extending from a top surface of the S/D. The method further includes annealing the semiconductor device to form a silicide layer in the S/D and in the protrusions.Type: GrantFiled: December 24, 2018Date of Patent: May 19, 2020Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.Inventors: Chia-Yang Wu, Shiu-Ko Jangjian, Keng-Chuan Chang, Ting-Siang Su
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Publication number: 20190148152Abstract: A method of forming a semiconductor device includes depositing a titanium-containing material over a source/drain (S/D), wherein an energy of depositing the titanium-containing material is sufficient to cause re-deposition of a material of the S/D along sidewalls of a dielectric layer adjacent the S/D to form protrusions extending from a top surface of the S/D. The method further includes annealing the semiconductor device to form a silicide layer in the S/D and in the protrusions.Type: ApplicationFiled: December 24, 2018Publication date: May 16, 2019Inventors: Chia-Yang WU, Shiu-Ko JANGJIAN, Keng-Chuan CHANG, Ting-Siang SU
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Patent number: 10163643Abstract: A method of forming a semiconductor device includes etching an inter-layer dielectric (ILD) to form a contact opening exposing a portion of a source/drain (S/D). The method further includes depositing a titanium-containing material into the contact opening, wherein an energy of depositing the titanium-containing material is sufficient to cause re-deposition of a material of the S/D along sidewalls of the ILD to form protrusions extending from a top surface of the S/D. The method further includes annealing the semiconductor device to form a silicide layer in the S/D and in the protrusions.Type: GrantFiled: October 3, 2017Date of Patent: December 25, 2018Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.Inventors: Chia-Yang Wu, Shiu-Ko Jangjian, Keng-Chuan Chang, Ting-Siang Su
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Publication number: 20180216786Abstract: A lighting apparatus comprises: a board, a plurality of light-emitting units disposed on the board, and a package structure enclosing all of the light-emitting units and having a volume less than 5000 mm3. The lighting apparatus has a light intensity greater than 150 lumens.Type: ApplicationFiled: March 26, 2018Publication date: August 2, 2018Inventors: Wei-Chiang HU, Keng-Chuan CHANG, Chiu-Lin YAO, Chun-Wei LIN, Jung-Chang SUN
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Publication number: 20180166287Abstract: A method of forming a semiconductor device includes etching an inter-layer dielectric (ILD) to form a contact opening exposing a portion of a source/drain (S/D). The method further includes depositing a titanium-containing material into the contact opening, wherein an energy of depositing the titanium-containing material is sufficient to cause re-deposition of a material of the S/D along sidewalls of the ILD to form protrusions extending from a top surface of the S/D. The method further includes annealing the semiconductor device to form a silicide layer in the S/D and in the protrusions.Type: ApplicationFiled: October 3, 2017Publication date: June 14, 2018Inventors: Chia-Yang WU, Shiu-Ko JANGJIAN, Keng-Chuan CHANG, Ting-Siang SU
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Patent number: 9927070Abstract: A lighting apparatus comprises: a board, a plurality of light-emitting units disposed on the board, and a package structure enclosing all of the light-emitting units and having a volume less than 5000 mm3. The lighting apparatus has a light intensity greater than 150 lumens.Type: GrantFiled: March 5, 2015Date of Patent: March 27, 2018Assignee: EPISTAR CORPORATIONInventors: Wei-Chiang Hu, Keng-Chuan Chang, Chiu-Lin Yao, Chun-Wei Lin, Jung-Chang Sun
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Publication number: 20150369457Abstract: A light-emitting device disclosed herein comprises an integrated board having a first part and a second part form an angle other than zero with the first part and a light-emitting element disposed on the first part.Type: ApplicationFiled: June 23, 2014Publication date: December 24, 2015Inventors: Keng-Chuan CHANG, Chiu-Lin YAO
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Publication number: 20150252954Abstract: A lighting apparatus comprises: a board, a plurality of light-emitting units disposed on the board, and a package structure enclosing all of the light-emitting units and having a volume less than 5000 mm3. The lighting apparatus has a light intensity greater than 150 lumens.Type: ApplicationFiled: March 5, 2015Publication date: September 10, 2015Inventors: Wei-Chiang Hu, Keng-Chuan Chang, Chiu-Lin Yao, Chun-Wei Lin, Jung-Chang Sun
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Patent number: 7081491Abstract: A method for fabricating a polybenzoxazole/clay nanocomposite material includes performing an ion exchange reaction between an organic amine and Na+-montmorillonite to form a swelled organoclay. A polycondensation reaction is conducted between two types of monomers, isophthaloyl chloride and 2,2-bis (3-amino-4-hydroxyphenyl) hexafluoropropane to form a polybenzoxaxole precursor polyhydroxyamide to form a PBO/clay composite material.Type: GrantFiled: December 9, 2002Date of Patent: July 25, 2006Assignee: National Cheng-Kung UniversityInventors: Steve Lien-Chung Hsu, Keng-Chuan Chang
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Publication number: 20030139513Abstract: A method for fabricating a polybenzoxazole/clay nanocomposite material includes performing an ion exchange reaction between an organic amine and Na+-montmorillonite to form a swelled organoclay. A polycondensation reaction is conducted between two types of monomers, isophthaloyl chloride and 2,2-bis (3-amino-4-hydroxyphenyl) hexafluoropropane to form a polybenzoxaxole precursor polyhydroxyamide to form a PBO/clay composite material.Type: ApplicationFiled: December 9, 2002Publication date: July 24, 2003Inventors: Steve Lien-Chung Hsu, Keng-Chuan Chang
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Patent number: D750283Type: GrantFiled: September 11, 2014Date of Patent: February 23, 2016Assignee: EPISTAR CORPORATIONInventors: Wei-Chiang Hu, Keng-Chuan Chang, Chiu-Lin Yao