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).

  • Patent number: 11852302
    Abstract: 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: Grant
    Filed: March 7, 2022
    Date of Patent: December 26, 2023
    Assignee: EPISTAR CORPORATION
    Inventors: Wei-Chiang Hu, Keng-Chuan Chang, Chiu-Lin Yao, Chun-Wei Lin, Jung-Chang Sun
  • Publication number: 20230093533
    Abstract: 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: Application
    Filed: September 22, 2021
    Publication date: March 23, 2023
    Inventors: Tzu Chieh SU, Keng Chuan CHANG, Hsiu Ming YANG
  • Publication number: 20220186887
    Abstract: 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: Application
    Filed: March 7, 2022
    Publication date: June 16, 2022
    Inventors: Wei-Chiang HU, Keng-Chuan CHANG, Chiu-Lin YAO, Chun-Wei LIN, Jung-Chang SUN
  • Patent number: 11268659
    Abstract: 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: Grant
    Filed: May 29, 2020
    Date of Patent: March 8, 2022
    Assignee: EPISTAR CORPORATION
    Inventors: Wei-Chiang Hu, Keng-Chuan Chang, Chiu-Lin Yao, Chun-Wei Lin, Jung-Chang Sun
  • Patent number: 11270888
    Abstract: 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: Grant
    Filed: May 7, 2020
    Date of Patent: March 8, 2022
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Chia-Yang Wu, Shiu-Ko Jangjian, Keng-Chuan Chang, Ting-Siang Su
  • Publication number: 20200300416
    Abstract: 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: Application
    Filed: May 29, 2020
    Publication date: September 24, 2020
    Inventors: Wei-Chiang HU, Keng-Chuan CHANG, Chiu-Lin YAO, Chun-Wei LIN, Jung-Chang SUN
  • Publication number: 20200266069
    Abstract: 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: Application
    Filed: May 7, 2020
    Publication date: August 20, 2020
    Inventors: Chia-Yang WU, Shiu-Ko JANGJIAN, Keng-Chuan CHANG, Ting-Siang SU
  • Patent number: 10670192
    Abstract: 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: Grant
    Filed: March 26, 2018
    Date of Patent: June 2, 2020
    Assignee: EPISTAR CORPORATION
    Inventors: Wei-Chiang Hu, Keng-Chuan Chang, Chiu-Lin Yao, Chun-Wei Lin, Jung-Chang Sun
  • Patent number: 10658186
    Abstract: 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: Grant
    Filed: December 24, 2018
    Date of Patent: May 19, 2020
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Chia-Yang Wu, Shiu-Ko Jangjian, Keng-Chuan Chang, Ting-Siang Su
  • Publication number: 20190148152
    Abstract: 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: Application
    Filed: December 24, 2018
    Publication date: May 16, 2019
    Inventors: Chia-Yang WU, Shiu-Ko JANGJIAN, Keng-Chuan CHANG, Ting-Siang SU
  • Patent number: 10163643
    Abstract: 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: Grant
    Filed: October 3, 2017
    Date of Patent: December 25, 2018
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Chia-Yang Wu, Shiu-Ko Jangjian, Keng-Chuan Chang, Ting-Siang Su
  • Publication number: 20180216786
    Abstract: 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: Application
    Filed: March 26, 2018
    Publication date: August 2, 2018
    Inventors: Wei-Chiang HU, Keng-Chuan CHANG, Chiu-Lin YAO, Chun-Wei LIN, Jung-Chang SUN
  • Publication number: 20180166287
    Abstract: 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: Application
    Filed: October 3, 2017
    Publication date: June 14, 2018
    Inventors: Chia-Yang WU, Shiu-Ko JANGJIAN, Keng-Chuan CHANG, Ting-Siang SU
  • Patent number: 9927070
    Abstract: 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: Grant
    Filed: March 5, 2015
    Date of Patent: March 27, 2018
    Assignee: EPISTAR CORPORATION
    Inventors: Wei-Chiang Hu, Keng-Chuan Chang, Chiu-Lin Yao, Chun-Wei Lin, Jung-Chang Sun
  • Publication number: 20150369457
    Abstract: 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: Application
    Filed: June 23, 2014
    Publication date: December 24, 2015
    Inventors: Keng-Chuan CHANG, Chiu-Lin YAO
  • Publication number: 20150252954
    Abstract: 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: Application
    Filed: March 5, 2015
    Publication date: September 10, 2015
    Inventors: Wei-Chiang Hu, Keng-Chuan Chang, Chiu-Lin Yao, Chun-Wei Lin, Jung-Chang Sun
  • Patent number: 7081491
    Abstract: 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: Grant
    Filed: December 9, 2002
    Date of Patent: July 25, 2006
    Assignee: National Cheng-Kung University
    Inventors: Steve Lien-Chung Hsu, Keng-Chuan Chang
  • Publication number: 20030139513
    Abstract: 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: Application
    Filed: December 9, 2002
    Publication date: July 24, 2003
    Inventors: Steve Lien-Chung Hsu, Keng-Chuan Chang
  • Patent number: D750283
    Type: Grant
    Filed: September 11, 2014
    Date of Patent: February 23, 2016
    Assignee: EPISTAR CORPORATION
    Inventors: Wei-Chiang Hu, Keng-Chuan Chang, Chiu-Lin Yao