Patents by Inventor Pun Jae Choi

Pun Jae Choi 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).

  • Publication number: 20150221843
    Abstract: There is provided a semiconductor light emitting device comprising a semiconductor stack having first and second main surfaces opposing each other, and comprising first and second conductivity-type semiconductor layers respectively defining the first and second main surfaces, and an active layer interposed between the first and second conductivity-type semiconductor layers; a plurality of contact holes penetrating the second conductivity-type semiconductor layer and the active layer, and one region of the first conductivity-type semiconductor layer; a first electrode layer disposed on the second main surface of the semiconductor stack, the first electrode layer extending and being connected to the one region of the first conductivity-type semiconductor layer through the contact holes; a second electrode layer disposed between the semiconductor stack and the first electrode layer and connected to the second conductivity-type semiconductor layer; and first and second interconnected bumps.
    Type: Application
    Filed: February 5, 2015
    Publication date: August 6, 2015
    Inventors: Pun Jae CHOI, Jae In SIM, Seok Min HWANG, Jin Hyun LEE, Myong Soo CHO, Ki Yeol PARK
  • Publication number: 20150200327
    Abstract: A semiconductor light emitting device includes a substrate, a semiconductor laminate disposed on the substrate and divided to a plurality of light emitting cells with an isolation region, and a wiring unit electrically connecting the plurality of light emitting cells. A region of lateral surfaces of each of the light emitting cells in which the wiring unit is disposed has a slope gentler than slopes of other regions of the lateral surfaces of each of the light emitting cells.
    Type: Application
    Filed: March 25, 2015
    Publication date: July 16, 2015
    Inventors: Hae Youn HWANG, Pun Jae CHOI, Jung Jae LEE
  • Publication number: 20150147835
    Abstract: There is provided a semiconductor light emitting device including a conductive substrate, a first electrode layer, an insulating layer, a second electrode layer, a second semiconductor layer, an active layer, and a first semiconductor layer that are sequentially stacked. The contact area between the first electrode layer and the first semiconductor layer is 3% to 13% of the total area of the semiconductor light emitting device, and thus high luminous efficiency is achieved.
    Type: Application
    Filed: February 2, 2015
    Publication date: May 28, 2015
    Inventors: Pun Jae CHOI, Yu Seung KIM, Jin Bock LEE
  • Patent number: 9035341
    Abstract: A semiconductor light emitting device includes a substrate, a semiconductor laminate disposed on the substrate and divided to a plurality of light emitting cells with an isolation region, and a wiring unit electrically connecting the plurality of light emitting cells. A region of lateral surfaces of each of the light emitting cells in which the wiring unit is disposed has a slope gentler than slopes of other regions of the lateral surfaces of each of the light emitting cells.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: May 19, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hae Youn Hwang, Pun Jae Choi, Jung Jae Lee
  • Patent number: 9018666
    Abstract: There is provided a semiconductor light emitting device that minimizes reflection or absorption of emitted light, maximizes luminous efficiency with the maximum light emitting area, enables uniform current spreading with a small area electrode, and enables mass production with high reliability and high quality. A semiconductor light emitting device according to an aspect of the invention includes first and second conductivity type semiconductor layers, an active layer formed therebetween, first electrode layer, and a second electrode part electrically connecting the semiconductor layers. The second electrode part includes an electrode pad unit, an electrode extending unit, and an electrode connecting unit connecting the electrode pad unit and electrode extending unit.
    Type: Grant
    Filed: March 22, 2010
    Date of Patent: April 28, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Pun Jae Choi, Ki Yeol Park, Sang Bum Lee, Seon Young Myoung, Myong Soo Cho
  • Publication number: 20150084537
    Abstract: In a semiconductor light emitting device, a light emitting structure includes a first-conductivity type semiconductor layer, an active layer, and a second-conductivity type semiconductor layer, which are sequentially formed on a conductive substrate. A second-conductivity type electrode includes a conductive via and an electrical connection part. The conductive via passes through the first-conductivity type semiconductor layer and the active layer, and is connected to the inside of the second-conductivity type semiconductor layer. The electrical connection part extends from the conductive via and is exposed to the outside of the light emitting structure. An insulator electrically separates the second-conductivity type electrode from the conductive substrate, the first-conductivity type semiconductor layer, and the active layer. A passivation layer is formed to cover at least a side surface of the active layer in the light emitting structure.
    Type: Application
    Filed: July 22, 2014
    Publication date: March 26, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Pun Jae . CHOI, Sang Bum LEE, Jin Bock LEE, Yu Seung KIM, Sang Yeob SONG
  • Patent number: 8981395
    Abstract: There is provided a semiconductor light emitting device, a method of manufacturing the same, and a semiconductor light emitting device package using the same. A semiconductor light emitting device having a first conductivity type semiconductor layer, an active layer, a second conductivity type semiconductor layer, a second electrode layer, and insulating layer, a first electrode layer, and a conductive substrate sequentially laminated, wherein the second electrode layer has an exposed area at the interface between the second electrode layer and the second conductivity type semiconductor layer, and the first electrode layer comprises at least one contact hole electrically connected to the first conductivity type semiconductor layer, electrically insulated from the second conductivity type semiconductor layer and the active layer, and extending from one surface of the first electrode layer to at least part of the first conductivity type semiconductor layer.
    Type: Grant
    Filed: December 9, 2013
    Date of Patent: March 17, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Pun Jae Choi, Jin Hyun Lee, Ki Yeol Park, Myong Soo Cho
  • Patent number: 8975653
    Abstract: There is provided a semiconductor light emitting device including a conductive substrate, a first electrode layer, an insulating layer, a second electrode layer, a second semiconductor layer, an active layer, and a first semiconductor layer that are sequentially stacked. The contact area between the first electrode layer and the first semiconductor layer is 3% to 13% of the total area of the semiconductor light emitting device, and thus high luminous efficiency is achieved.
    Type: Grant
    Filed: November 14, 2013
    Date of Patent: March 10, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Pun Jae Choi, Seung Yu Kim, Jin Bock Lee
  • Patent number: 8963175
    Abstract: Provided are a light emitting device and a method of manufacturing the same. The light emitting device includes each of first and second semiconductor stacked structures including first and second conductive type semiconductor layers and an active layer, first and second contacts on tops and bottoms of the first and second semiconductor stacked structures to be connected to the first and second conductive type semiconductor layers, a substrate structure including first and second sides, a first insulation layer on an area where no second contact is formed among a surface of the first and second semiconductor stacked layers, first and second conductive layers connected to the second contacts of the first and second semiconductor stacked structures, first and second wiring layers on the first side of the substrate structure, and first and second external connection terminals connected to the first and second contacts of the first semiconductor stacked structure.
    Type: Grant
    Filed: November 6, 2008
    Date of Patent: February 24, 2015
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Grigory Onushkin, Jin Hyun Lee, Myong Soo Cho, Pun Jae Choi
  • Publication number: 20150001463
    Abstract: In a semiconductor light emitting device, a light emitting structure includes a first-conductivity type semiconductor layer, an active layer, and a second-conductivity type semiconductor layer, which are sequentially formed on a conductive substrate. A second-conductivity type electrode includes a conductive via and an electrical connection part. The conductive via passes through the first-conductivity type semiconductor layer and the active layer, and is connected to the inside of the second-conductivity type semiconductor layer. The electrical connection part extends from the conductive via and is exposed to the outside of the light emitting structure. An insulator electrically separates the second-conductivity type electrode from the conductive substrate, the first-conductivity type semiconductor layer, and the active layer. A passivation layer is formed to cover at least a side surface of the active layer in the light emitting structure.
    Type: Application
    Filed: July 21, 2014
    Publication date: January 1, 2015
    Inventors: Pun Jae . CHOI, Sang Bum LEE, Jin Bock LEE, Yu Seung KIM, Sang Yeob SONG
  • Patent number: 8916402
    Abstract: The present invention provides a compound semiconductor light emitting device including: an Si—Al substrate; protection layers formed on top and bottom surfaces of the Si—Al substrate; and a p-type semiconductor layer, an active layer, and an n-type semiconductor layer which are sequentially stacked on the protection layer formed on the top surface of the Si—Al substrate, and a method for manufacturing the same.
    Type: Grant
    Filed: April 30, 2012
    Date of Patent: December 23, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Myong Soo Cho, Ki Yeol Park, Pun Jae Choi
  • Patent number: 8847266
    Abstract: There is provided a semiconductor light emitting device that minimizes reflection or absorption of emitted light, maximizes luminous efficiency with the maximum light emitting area, enables uniform current spreading with a small area electrode, and enables mass production with high reliability and high quality. A semiconductor light emitting device according to an aspect of the invention includes first and second conductivity type semiconductor layers, an active layer formed therebetween, first electrode layer, and a second electrode part electrically connecting the semiconductor layers. The second electrode part includes an electrode pad unit, an electrode extending unit, and an electrode connecting unit connecting the electrode pad unit and electrode extending unit.
    Type: Grant
    Filed: January 3, 2008
    Date of Patent: September 30, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Pun Jae Choi, Ki Yeol Park, Sang Bum Lee, Seon Young Myoung, Myong Soo Cho
  • Patent number: 8809893
    Abstract: The present invention relates to a vertical/horizontal light-emitting diode for a semiconductor.
    Type: Grant
    Filed: November 16, 2009
    Date of Patent: August 19, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Pun Jae Choi, Sang Bum Lee, Jin Bock Lee, Yu Seung Kim, Sang Yeob Song
  • Patent number: 8753910
    Abstract: A method of manufacturing a vertical structure light emitting diode device, the method including: sequentially forming a first conductivity type III-V group compound semiconductor layer, an active layer, and a second conductivity type III-V group compound semiconductor layer on a substrate for growth; bonding a conductive substrate to the second conductivity type III-V group compound semiconductor layer; removing the substrate for growth from the first conductivity type III-V group compound semiconductor layer; and forming an electrode on an exposed portion of the first conductive III-V group compound semiconductor layer due to the removing the substrate for growth, wherein the bonding a conductive substrate comprises partially heating a metal bonding layer by applying microwaves to a bonding interface while bringing the metal bonding layer into contact with the bonding interface.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: June 17, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Myong Soo Cho, Ki Yeol Park, Sang Yeob Song, Si Hyuk Lee, Pun Jae Choi
  • Patent number: 8723206
    Abstract: A semiconductor light emitting device has a semiconductor laminate including first and second conductivity type semiconductor layers respectively providing first and second main surfaces and an active layer. The semiconductor laminate is divided into first and second regions. At least one contact hole is formed to pass through the active layer from the second main surface of the first region. A first electrode is formed on the second main surface to be connected to the first conductivity type semiconductor layer of the first region and the second conductivity type semiconductor layer of the second region. A second electrode is formed on the second main surface of the first region to be connected to the second conductivity type semiconductor layer of the first region and the first conductivity type semiconductor layer of the second region.
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: May 13, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Grigory Onushkin, Oleg Ledyaev, Jong Hoon Lim, Joong Kon Son, Pun Jae Choi
  • Patent number: 8716043
    Abstract: A high-efficiency semiconductor light emitting diode and a method for manufacturing the same are provided. The semiconductor LED has high internal quantum efficiency and can reduce the bad effect caused by the crystal defect. In the semiconductor light emitting diode, a conductive substrate has a three-dimensional top surface, and a light-emitting stack structure has a three-dimensional structure and includes an n-type nitride semiconductor layer, an active layer, and a p-type nitride semiconductor layer, which are sequentially formed on the conductive substrate. A p-electrode is formed on the p-type nitride semiconductor layer, and an n-electrode is formed on a bottom surface of the conductive substrate.
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: May 6, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Pun Jae Choi, Sang Yeob Song, Suk Youn Hong
  • Publication number: 20140106483
    Abstract: Provided is a vertical nitride-based LED including a first electrode; a first nitride semiconductor layer that is disposed on the first electrode; an active layer that is disposed on the first nitride semiconductor layer; a second nitride semiconductor layer that is disposed on the active layer; an ohmic contact pattern that is disposed on the second nitride semiconductor layer; a second electrode that is disposed on the ohmic contact pattern; and a bonding pad that is electrically connected to the second electrode and disposed on the second nitride semiconductor layer.
    Type: Application
    Filed: December 17, 2013
    Publication date: April 17, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin Bock LEE, Jin Hyun LEE, Hee Seok PARK, Pun Jae CHOI, Jong In YANG
  • Publication number: 20140097458
    Abstract: There is provided a semiconductor light emitting device, a method of manufacturing the same, and a semiconductor light emitting device package using the same. A semiconductor light emitting device having a first conductivity type semiconductor layer, an active layer, a second conductivity type semiconductor layer, a second electrode layer, and insulating layer, a first electrode layer, and a conductive substrate sequentially laminated, wherein the second electrode layer has an exposed area at the interface between the second electrode layer and the second conductivity type semiconductor layer, and the first electrode layer comprises at least one contact hole electrically connected to the first conductivity type semiconductor layer, electrically insulated from the second conductivity type semiconductor layer and the active layer, and extending from one surface of the first electrode layer to at least part of the first conductivity type semiconductor layer.
    Type: Application
    Filed: December 9, 2013
    Publication date: April 10, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Pun Jae . CHOI, Jin Hyun LEE, Ki Yeol PARK, Myong Soo CHO
  • Patent number: 8686454
    Abstract: There is provided a semiconductor light emitting device including a conductive substrate, a first electrode layer, an insulating layer, a second electrode layer, a second semiconductor layer, an active layer, and a first semiconductor layer that are sequentially stacked. The contact area between the first electrode layer and the first semiconductor layer is 3% to 13% of the total area of the semiconductor light emitting device, and thus high luminous efficiency is achieved.
    Type: Grant
    Filed: October 22, 2009
    Date of Patent: April 1, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Pun Jae Choi, Yu Seung Kim, Jin Bock Lee
  • Publication number: 20140070263
    Abstract: There is provided a semiconductor light emitting device including a conductive substrate, a first electrode layer, an insulating layer, a second electrode layer, a second semiconductor layer, an active layer, and a first semiconductor layer that are sequentially stacked. The contact area between the first electrode layer and the first semiconductor layer is 3% to 13% of the total area of the semiconductor light emitting device, and thus high luminous efficiency is achieved.
    Type: Application
    Filed: November 14, 2013
    Publication date: March 13, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Pun Jae CHOI, Yu Seung KIM, Jin Bock LEE