Patents Assigned to Semileds Corporation
  • Publication number: 20250157859
    Abstract: A method for fabricating semiconductor devices includes providing an engineered substrate (ES) having a core, an engineered layer (ELY) on the core, and a lattice matching layer (LML) on the engineered layer (ELY). The method also includes providing a plurality of epitaxial (EPI) layers on the engineered substrate (ES). The method also includes forming a plurality of device epitaxial (EPI) structures in the epitaxial (EPI) layers separated by streets, forming a plurality of connecting metal layers (C-ML) connecting the device epitaxial (EPI) structures, and removing the core of the engineered substrate leaving new device structures connected by the connecting metal layers (C-ML). The method can also include attaching a temporary substrate, such as a UV release substrate, to the device epitaxial (EPI) structures, and performing additional fabrication steps, such as the formation of device contacts.
    Type: Application
    Filed: November 5, 2024
    Publication date: May 15, 2025
    Applicant: SemiLEDs Corporation
    Inventors: TRUNG TRI DOAN, CHEN-FU CHU
  • Patent number: 12002792
    Abstract: A method for transferring alignment marks between substrate systems includes providing a substrate having semiconductor devices and alignment marks in precise alignment with the semiconductor devices; and physically transferring and bonding the semiconductor devices and the alignment marks to a temporary substrate of a first substrate system. The method can also include physically transferring and bonding the semiconductor devices and the alignment marks to a mass transfer substrate of a second substrate system; and physically transferring and bonding the semiconductor devices and the alignment marks to a circuitry substrate of a third substrate system. A system for transferring alignment marks between substrate systems includes the substrate having the semiconductor devices and the alignment marks in precise alignment with the semiconductor devices. The system also includes the first substrate system, and can include the second substrate system and the third substrate system.
    Type: Grant
    Filed: November 18, 2022
    Date of Patent: June 4, 2024
    Assignees: SemiLEDs Corporation, Shin-Etsu Chemical Co. Ltd.
    Inventors: David Trung Doan, Yoshinori Ogawa, Nobuaki Matsumoto
  • Publication number: 20240072203
    Abstract: A method for fabricating light emitting diode (LED) dice includes the steps of: providing a substrate, and forming a plurality of die sized semiconductor structures on the substrate. The method also includes the steps of providing a receiving plate having an elastomeric polymer layer, placing the substrate and the receiving plate in physical contact with an adhesive force applied by the elastomeric polymer layer, and performing a laser lift-off (LLO) process by directing a uniform laser beam through the substrate to the semiconductor layer at an interface with the substrate to lift off the semiconductor structures onto the elastomeric polymer layer. During the laser lift-off (LLO) process the elastomeric polymer layer functions as a shock absorber to reduce momentum transfer, and as an adhesive surface to hold the semiconductor structures in place on the receiving plate.
    Type: Application
    Filed: November 6, 2023
    Publication date: February 29, 2024
    Applicants: SemiLEDs Corporation, SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Chen-Fu Chu, Shih-Kai Chan, Yi-Feng Shih, David Trung Doan, Trung Tri Doan, Yoshinori Ogawa, Kohei Otake, Kazunori Kondo, Keiji Ohori, Taichi Kitagawa, Nobuaki Matsumoto, Toshiyuki Ozai, Shuhei Ueda
  • Patent number: 11862754
    Abstract: A method for fabricating light emitting diode (LED) dice includes the steps of: providing a substrate, and forming a plurality of die sized semiconductor structures on the substrate. The method also includes the steps of providing a receiving plate having an elastomeric polymer layer, placing the substrate and the receiving plate in physical contact with an adhesive force applied by the elastomeric polymer layer, and performing a laser lift-off (LLO) process by directing a uniform laser beam through the substrate to the semiconductor layer at an interface with the substrate to lift off the semiconductor structures onto the elastomeric polymer layer. During the laser lift-off (LLO) process the elastomeric polymer layer functions as a shock absorber to reduce momentum transfer, and as an adhesive surface to hold the semiconductor structures in place on the receiving plate.
    Type: Grant
    Filed: May 10, 2022
    Date of Patent: January 2, 2024
    Assignees: SemiLEDs Corporation, Shin-Etsu Chemical Co., Ltd.
    Inventors: Chen-Fu Chu, Shih-Kai Chan, Yi-Feng Shih, David Trung Doan, Trung Tri Doan, Yoshinori Ogawa, Kohei Otake, Kazunori Kondo, Keiji Ohori, Taichi Kitagawa, Nobuaki Matsumoto, Toshiyuki Ozai, Shuhei Ueda
  • Publication number: 20230134997
    Abstract: A method for transferring alignment marks between substrate systems includes providing a substrate having semiconductor devices and alignment marks in precise alignment with the semiconductor devices; and physically transferring and bonding the semiconductor devices and the alignment marks to a temporary substrate of a first substrate system. The method can also include physically transferring and bonding the semiconductor devices and the alignment marks to a mass transfer substrate of a second substrate system; and physically transferring and bonding the semiconductor devices and the alignment marks to a circuitry substrate of a third substrate system. A system for transferring alignment marks between substrate systems includes the substrate having the semiconductor devices and the alignment marks in precise alignment with the semiconductor devices. The system also includes the first substrate system, and can include the second substrate system and the third substrate system.
    Type: Application
    Filed: November 18, 2022
    Publication date: May 4, 2023
    Applicants: SemiLEDs Corporation, Shin-Etsu Chemical Co. Ltd.
    Inventors: David Trung Doan, Yoshinori Ogawa, Nobuaki Matsumoto
  • Publication number: 20230018855
    Abstract: A method for fabricating light emitting diode (LED) dice includes the steps of: providing a substrate [30], and forming a plurality of die sized semiconductor structures [32] on the substrate [30]. The method also includes the steps of providing a receiving plate [42] having an elastomeric polymer layer [44], placing the substrate [30] and the receiving plate [42] in close proximity with a gap [101] therebetween, and performing a laser lift-off (LLO) process by directing a uniform laser beam through the substrate [30] to the semiconductor layer [50] at an interface with the substrate [30] to lift off the semiconductor structures [32] through the gap [101] onto the elastomeric polymer layer [44]. During the laser lift-off (LLO) process the elastomeric polymer layer [44] functions as a shock absorber to reduce momentum transfer, and as an adhesive surface to hold the semiconductor structures [32] in place on the receiving plate [42].
    Type: Application
    Filed: August 3, 2022
    Publication date: January 19, 2023
    Applicants: SemiLEDs Corporation, SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: CHEN-FU CHU, SHIH-KAI CHAN, YI-FENG SHIH, DAVID TRUNG DOAN, TRUNG TRI DOAN, YOSHINORI OGAWA, KOHEI OTAKE, KAZUNORI KONDO, KEIJI OHORI, TAICHI KITAGAWA, NOBUAKI MATSUMOTO, TOSHIYUKI OZAI, SHUHEI UEDA, JUNYA ISHIZAKI
  • Patent number: 11545474
    Abstract: A method for transferring alignment marks between substrate systems includes providing a substrate having semiconductor devices and alignment marks in precise alignment with the semiconductor devices; and physically transferring and bonding the semiconductor devices and the alignment marks to a temporary substrate of a first substrate system. The method can also include physically transferring and bonding the semiconductor devices and the alignment marks to a mass transfer substrate of a second substrate system; and physically transferring and bonding the semiconductor devices and the alignment marks to a circuitry substrate of a third substrate system. A system for transferring alignment marks between substrate systems includes the substrate having the semiconductor devices and the alignment marks in precise alignment with the semiconductor devices. The system also includes the first substrate system, and can include the second substrate system and the third substrate system.
    Type: Grant
    Filed: April 27, 2021
    Date of Patent: January 3, 2023
    Assignees: SemiLEDs Corporation, Shin-Etsu Chemical Co., Ltd.
    Inventors: David Trung Doan, Yoshinori Ogawa, Nobuaki Matsumoto
  • Publication number: 20220359785
    Abstract: A method for fabricating light emitting diode (LED) dice includes the steps of: providing a substrate, and forming a plurality of die sized semiconductor structures on the substrate. The method also includes the steps of providing a receiving plate having an elastomeric polymer layer, placing the substrate and the receiving plate in physical contact with an adhesive force applied by the elastomeric polymer layer, and performing a laser lift-off (LLO) process by directing a uniform laser beam through the substrate to the semiconductor layer at an interface with the substrate to lift off the semiconductor structures onto the elastomeric polymer layer. During the laser lift-off (LLO) process the elastomeric polymer layer functions as a shock absorber to reduce momentum transfer, and as an adhesive surface to hold the semiconductor structures in place on the receiving plate.
    Type: Application
    Filed: July 20, 2022
    Publication date: November 10, 2022
    Applicants: SemiLEDS Corporation, Shin-Etsu Chemical Co., Ltd.
    Inventors: Chen-Fu Chu, Shih-Kai Chan, Yi-Feng Shih, David Trung Doan, Trung Tri Doan, Yoshinori Ogawa, Kohei Otake, Kazunori Kondo, Keiji Ohori, Taichi Kitagawa, Nobuaki Matsumoto, Toshiyuki Ozai, Shuhei Ueda
  • Publication number: 20220320366
    Abstract: A method for fabricating semiconductor light emitting devices (LEDs) includes forming a plurality of light emitting diode (LED) structures having sidewall P-N junctions on a growth substrate, and forming an isolation layer on the light emitting diode (LED) structures having corners at intersections of the epitaxial structures with the growth substrate. The method also includes forming an etchable covering channel layer on the isolation layer, forming a patterning protection layer on the covering channel layer, forming etching channels in the covering channel layer using a first etching process, and removing the corners of the isolation layer by etching the isolation layer using a second etching process. Following the second etching process the isolation layer covers the sidewall P-N junctions. The method can also include bonding the growth substrate to a carrier and separating the growth substrate from the light emitting diode (LED) structures using a laser lift off (LLO) process.
    Type: Application
    Filed: February 16, 2022
    Publication date: October 6, 2022
    Applicants: SemiLEDs Corporation, Shin-Etsu Chemical Co., Ltd.
    Inventors: CHEN-FU CHU, SHIH-KAI CHAN, YI-FENG SHIH, TRUNG TRI DOAN, DAVID TRUNG DOAN, YOSHINORI OGAWA, KAZUNORI KONDO, TOSHIYUKI OZAI, NOBUAKI MATSUMOTO, TAICHI KITAGAWA
  • Publication number: 20220271198
    Abstract: A method for fabricating light emitting diode (LED) dice includes the steps of: providing a substrate, and forming a plurality of die sized semiconductor structures on the substrate. The method also includes the steps of providing a receiving plate having an elastomeric polymer layer, placing the substrate and the receiving plate in physical contact with an adhesive force applied by the elastomeric polymer layer, and performing a laser lift-off (LLO) process by directing a uniform laser beam through the substrate to the semiconductor layer at an interface with the substrate to lift off the semiconductor structures onto the elastomeric polymer layer. During the laser lift-off (LLO) process the elastomeric polymer layer functions as a shock absorber to reduce momentum transfer, and as an adhesive surface to hold the semiconductor structures in place on the receiving plate.
    Type: Application
    Filed: May 10, 2022
    Publication date: August 25, 2022
    Applicants: SemiLEDs Corporation, SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Chen-Fu Chu, SHIH-KAI CHAN, YI-FENG SHIH, DAVID TRUNG DOAN, TRUNG TRI DOAN, YOSHINORI OGAWA, KOHEl OTAKE, KAZUNORI KONDO, KEIJI OHORI, TAICHI KITAGAWA, NOBUAKI MATSUMOTO, TOSHIYUKI OZAi, SHUHEI UEDA
  • Patent number: 11417799
    Abstract: A method for fabricating light emitting diode (LED) dice includes the steps of: providing a substrate, and forming a plurality of die sized semiconductor structures on the substrate. The method also includes the steps of providing a receiving plate having an elastomeric polymer layer, placing the substrate and the receiving plate in physical contact with an adhesive force applied by the elastomeric polymer layer, and performing a laser lift-off (LLO) process by directing a uniform laser beam through the substrate to the semiconductor layer at an interface with the substrate to lift off the semiconductor structures onto the elastomeric polymer layer. During the laser lift-off (LLO) process the elastomeric polymer layer functions as a shock absorber to reduce momentum transfer, and as an adhesive surface to hold the semiconductor structures in place on the receiving plate.
    Type: Grant
    Filed: August 7, 2020
    Date of Patent: August 16, 2022
    Assignees: SemiLEDs Corporation, Shin-Etsu Chemical Co., Ltd.
    Inventors: Chen-Fu Chu, Shih-Kai Chan, Yi-Feng Shih, David Trung Doan, Trung Tri Doan, Yoshinori Ogawa, Kohei Otake, Kazunori Kondo, Keiji Ohori, Taichi Kitagawa, Nobuaki Matsumoto, Toshiyuki Ozai, Shuhei Ueda
  • Publication number: 20210351166
    Abstract: A method for transferring alignment marks between substrate systems includes providing a substrate having semiconductor devices and alignment marks in precise alignment with the semiconductor devices; and physically transferring and bonding the semiconductor devices and the alignment marks to a temporary substrate of a first substrate system. The method can also include physically transferring and bonding the semiconductor devices and the alignment marks to a mass transfer substrate of a second substrate system; and physically transferring and bonding the semiconductor devices and the alignment marks to a circuitry substrate of a third substrate system. A system for transferring alignment marks between substrate systems includes the substrate having the semiconductor devices and the alignment marks in precise alignment with the semiconductor devices. The system also includes the first substrate system, and can include the second substrate system and the third substrate system.
    Type: Application
    Filed: April 27, 2021
    Publication date: November 11, 2021
    Applicants: SemiLEDs Corporation, Shin-Etsu Chemical Co. Ltd.
    Inventors: David Trung Doan, Yoshinori Ogawa, Nobuaki Matsumoto
  • Publication number: 20210066541
    Abstract: A method for fabricating light emitting diode (LED) dice includes the steps of: providing a substrate, and forming a plurality of die sized semiconductor structures on the substrate. The method also includes the steps of providing a receiving plate having an elastomeric polymer layer, placing the substrate and the receiving plate in physical contact with an adhesive force applied by the elastomeric polymer layer, and performing a laser lift-off (LLO) process by directing a uniform laser beam through the substrate to the semiconductor layer at an interface with the substrate to lift off the semiconductor structures onto the elastomeric polymer layer. During the laser lift-off (LLO) process the elastomeric polymer layer functions as a shock absorber to reduce momentum transfer, and as an adhesive surface to hold the semiconductor structures in place on the receiving plate.
    Type: Application
    Filed: August 7, 2020
    Publication date: March 4, 2021
    Applicants: SemiLEDs Corporation, SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Chen-Fu Chu, Shih-Kai CHAN, Yi-Feng SHIH, David Trung DOAN, Trung Tri DOAN, Yoshinori OGAWA, Kohei OTAKE, Kazunori KONDO, Keiji OHORI, Taichi KITAGAWA, Nobuaki MATSUMOTO, Toshiyuki OZAI, Shuhei UEDA
  • Patent number: 8680534
    Abstract: A vertical light-emitting diode (VLED) includes a metal substrate, a p-electrode coupled to the metal substrate, a p-contact coupled to the p-electrode, a p-GaN portion coupled to the p-electrode, an active region coupled to the p-GaN portion, an n-GaN portion coupled to the active region, and a phosphor layer coupled to the n-GaN portion.
    Type: Grant
    Filed: September 7, 2011
    Date of Patent: March 25, 2014
    Assignee: Semileds Corporation
    Inventors: Chuong A Tran, Trung Tri Doan
  • Patent number: 8008678
    Abstract: Methods are disclosed for forming a vertical semiconductor light-emitting diode (VLED) device having an active layer between an n-doped layer and a p-doped layer; and securing a plurality of balls on a surface of the n-doped layer of the VLED device.
    Type: Grant
    Filed: July 15, 2008
    Date of Patent: August 30, 2011
    Assignee: Semileds Corporation
    Inventors: Chuong Anh Tran, Trung Tri Doan
  • Patent number: 7646033
    Abstract: A vertical light emitting diode (LED) includes a metal substrate; a p-electrode coupled to the metal substrate; a p-contact coupled to the p-electrode; a p-GaN portion coupled to the p electrode; an active region coupled to the p-GaN portion; an n-GaN portion coupled to the active region; and a phosphor layer coupled to the n-GaN.
    Type: Grant
    Filed: March 27, 2007
    Date of Patent: January 12, 2010
    Assignee: SemiLEDs Corporation
    Inventors: Chuong Anh Tran, Trung Tri Doan
  • Patent number: 7629195
    Abstract: Methods are disclosed for fabricating a semiconductor light emitting diode (LED) device by forming an n-gallium nitride (n-GaN) layer on the LED device and roughening the surface of the n-GaN layer to increase light extraction from an interior of the LED device.
    Type: Grant
    Filed: January 23, 2008
    Date of Patent: December 8, 2009
    Assignee: SemiLEDs Corporation
    Inventors: Chuong Anh Tran, Trung Tri Doan
  • Patent number: 7524686
    Abstract: Methods are provided for fabricating a semiconductor light-emitting diode (LED) device by providing an LED wafer assembly having an LED stack and selectively roughening and/or texturing a light-emitting surface of the LED stack's n-doped layer. In this manner, light extraction from the LED device is improved.
    Type: Grant
    Filed: March 23, 2007
    Date of Patent: April 28, 2009
    Assignee: Semileds Corporation
    Inventors: Chen-Fu Chu, Hao-Chun Cheng, Feng-Hsu Fan, Wen-Huang Liu, Chao-Chen Cheng
  • Patent number: 7473936
    Abstract: Systems and methods are disclosed for fabricating a semiconductor light emitting diode (LED) device by forming an n-gallium nitride (n-GaN) layer on the LED device and roughening the surface of the n-GaN layer to extract light from an interior of the LED device.
    Type: Grant
    Filed: December 21, 2006
    Date of Patent: January 6, 2009
    Assignee: Semileds Corporation
    Inventors: Chuong Anh Tran, Trung Tri Doan
  • Patent number: 7432119
    Abstract: Systems and methods for fabricating a light emitting diode include forming a multilayer epitaxial structure above a carrier substrate; depositing at least one metal layer above the multilayer epitaxial structure; removing the carrier substrate.
    Type: Grant
    Filed: January 11, 2005
    Date of Patent: October 7, 2008
    Assignee: Semileds Corporation
    Inventor: Trung Tri Doan