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).

  • Patent number: 11658259
    Abstract: A light emitting device is provided. The light emitting device includes a first semiconductor layer; a second semiconductor layer provided on a bottom surface of the first semiconductor layer; an active layer interposed between the first semiconductor layer and the second semiconductor layer; a dielectric layer provided on a bottom surface of the second semiconductor layer; a plurality of first n-contacts provided on a first etched surface of the first semiconductor layer; and a plurality of first p-contacts and a plurality of second p-contacts provided on the bottom surface of the second semiconductor layer. One first n-contact is disposed along a first edge region of the first semiconductor layer, one first p-contact is closer to the one first n-contact than one second p-contact, and an area of the one first p-contact is greater than an area of each of the second p-contacts.
    Type: Grant
    Filed: January 31, 2022
    Date of Patent: May 23, 2023
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jeonghwan Jang, Jae-Yoon Kim, Sungwon Ko, Junghee Kwak, Sangseok Lee, Suyeol Lee, Seungwan Chae, Pun Jae Choi
  • Patent number: 11592155
    Abstract: A light-emitting device includes an emission array including a plurality of light-emitting elements and a partition wall. The emission array includes a first region and a second region adjacent to each other. The partition wall is configured to isolate the first region and the second region from each other, such that the partition wall at least partially defines the first region in the emission array. The first region is associated with a first emission factor and the second region is associated with a second emission factor, the second emission factor different from the first emission factor.
    Type: Grant
    Filed: July 12, 2021
    Date of Patent: February 28, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yong-min Kwon, Pun-jae Choi, Geun-woo Ko, Jong-hyun Lee
  • Patent number: 11573006
    Abstract: A light source module including: a printed circuit board; a light emitting device mounted on the printed circuit board and including a plurality of subarrays each of the plurality of subarrays including a plurality of light emitting cells; and a plurality of driving chips mounted on the printed circuit board, wherein each of the plurality of driving chips respectively drives a corresponding one of the plurality of subarrays, wherein the plurality of subarrays are electrically isolated from each other.
    Type: Grant
    Filed: April 15, 2022
    Date of Patent: February 7, 2023
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Geun-woo Ko, Seung-woo Lee, Jun-ho Lee, Pun-jae Choi
  • Publication number: 20220243906
    Abstract: A light source module including: a printed circuit board; a light emitting device mounted on the printed circuit board and including a plurality of subarrays each of the plurality of subarrays including a plurality of light emitting cells; and a plurality of driving chips mounted on the printed circuit board, wherein each of the plurality of driving chips respectively drives a corresponding one of the plurality of subarrays, wherein the plurality of subarrays are electrically isolated from each other.
    Type: Application
    Filed: April 15, 2022
    Publication date: August 4, 2022
    Inventors: Geun-woo KO, Seung-woo Lee, Jun-ho Lee, Pun-jae Choi
  • Publication number: 20220238597
    Abstract: A semiconductor light-emitting device includes a plurality of light-emitting device structures separated from each other and arranged in a matrix form. A pad region at least partially surrounds the plurality of light-emitting device structures. The pad region is disposed outside of the plurality of light-emitting device structures. A partition structure is disposed on a first surface of the plurality of light-emitting device structures and is further disposed between adjacent light-emitting device structures of the plurality of light-emitting device structures. The partition structure defines a plurality of pixel spaces within the plurality of light-emitting device structures. A fluorescent layer is disposed on the first surface of the plurality of light-emitting device structures and fills each of the plurality of pixel spaces.
    Type: Application
    Filed: April 12, 2022
    Publication date: July 28, 2022
    Inventors: YONG-MIN KWON, Geun-Woo Ko, Jung-Wook Lee, Jong-Hyun Lee, Pun-Jae Choi
  • Publication number: 20220158023
    Abstract: A light emitting device is provided. The light emitting device includes a first semiconductor layer; a second semiconductor layer provided on a bottom surface of the first semiconductor layer; an active layer interposed between the first semiconductor layer and the second semiconductor layer; a dielectric layer provided on a bottom surface of the second semiconductor layer; a plurality of first n-contacts provided on a first etched surface of the first semiconductor layer; and a plurality of first p-contacts and a plurality of second p-contacts provided on the bottom surface of the second semiconductor layer. One first n-contact is disposed along a first edge region of the first semiconductor layer, one first p-contact is closer to the one first n-contact than one second p-contact, and an area of the one first p-contact is greater than an area of each of the second p-contacts.
    Type: Application
    Filed: January 31, 2022
    Publication date: May 19, 2022
    Applicant: SAMSUNG ELECTRONICS., LTD.
    Inventors: Jeonghwan JANG, Jae-Yoon KIM, Sungwon Ko, Junghee KWAK, Sangseok LEE, Suyeol LEE, Seungwan CHAE, Pun Jae CHOI
  • Patent number: 11306908
    Abstract: A light source module including: a printed circuit board; a light emitting device mounted on the printed circuit board and including a plurality of subarrays each of the plurality of subarrays including a plurality of light emitting cells; and a plurality of driving chips mounted on the printed circuit board, wherein each of the plurality of driving chips respectively drives a corresponding one of the plurality of subarrays, wherein the plurality of subarrays are electrically isolated from each other.
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: April 19, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Geun-woo Ko, Seung-woo Lee, Jun-ho Lee, Pun-jae Choi
  • Patent number: 11302743
    Abstract: A semiconductor light-emitting device includes a plurality of light-emitting device structures separated from each other and arranged in a matrix form. A pad region at least partially surrounds the plurality of light-emitting device structures. The pad region is disposed outside of the plurality of light-emitting device structures. A partition structure is disposed on a first surface of the plurality of light-emitting device structures and is further disposed between adjacent light-emitting device structures of the plurality of light-emitting device structures. The partition structure defines a plurality of pixel spaces within the plurality of light-emitting device structures. A fluorescent layer is disposed on the first surface of the plurality of light-emitting device structures and fills each of the plurality of pixel spaces.
    Type: Grant
    Filed: March 1, 2019
    Date of Patent: April 12, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yong-Min Kwon, Geun-Woo Ko, Jung-Wook Lee, Jong-Hyun Lee, Pun-Jae Choi
  • Patent number: 11239385
    Abstract: A light emitting device is provided. The light emitting device includes a first semiconductor layer; a second semiconductor layer provided on a bottom surface of the first semiconductor layer; an active layer interposed between the first semiconductor layer and the second semiconductor layer; a dielectric layer provided on a bottom surface of the second semiconductor layer; a plurality of first n-contacts provided on a first etched surface of the first semiconductor layer; and a plurality of first p-contacts and a plurality of second p-contacts provided on the bottom surface of the second semiconductor layer. One first n-contact is disposed along a first edge region of the first semiconductor layer, one first p-contact is closer to the one first n-contact than one second p-contact, and an area of the one first p-contact is greater than an area of each of the second p-contacts.
    Type: Grant
    Filed: April 9, 2020
    Date of Patent: February 1, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jeonghwan Jang, Jae-Yoon Kim, Sungwon Ko, Junghee Kwak, Sangseok Lee, Suyeol Lee, Seungwan Chae, Pun Jae Choi
  • Publication number: 20210341125
    Abstract: A light-emitting device includes an emission array including a plurality of light-emitting elements and a partition wall. The emission array includes a first region and a second region adjacent to each other. The partition wall is configured to isolate the first region and the second region from each other, such that the partition wall at least partially defines the first region in the emission array. The first region is associated with a first emission factor and the second region is associated with a second emission factor, the second emission factor different from the first emission factor.
    Type: Application
    Filed: July 12, 2021
    Publication date: November 4, 2021
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Yong-min KWON, Pun-jae CHOI, Geun-woo KO, Jong-hyun LEE
  • Patent number: 11060689
    Abstract: A light-emitting device includes an emission array including a plurality of light-emitting elements and a partition wall. The emission array includes a first region and a second region adjacent to each other. The partition wall is configured to isolate the first region and the second region from each other, such that the partition wall at least partially defines the first region in the emission array. The first region is associated with a first emission factor and the second region is associated with a second emission factor, the second emission factor different from the first emission factor.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: July 13, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yong-min Kwon, Pun-jae Choi, Geun-woo Ko, Jong-hyun Lee
  • Publication number: 20210057602
    Abstract: A light emitting device is provided. The light emitting device includes a first semiconductor layer; a second semiconductor layer provided on a bottom surface of the first semiconductor layer; an active layer interposed between the first semiconductor layer and the second semiconductor layer; a dielectric layer provided on a bottom surface of the second semiconductor layer; a plurality of first n-contacts provided on a first etched surface of the first semiconductor layer; and a plurality of first p-contacts and a plurality of second p-contacts provided on the bottom surface of the second semiconductor layer. One first n-contact is disposed along a first edge region of the first semiconductor layer, one first p-contact is closer to the one first n-contact than one second p-contact, and an area of the one first p-contact is greater than an area of each of the second p-contacts.
    Type: Application
    Filed: April 9, 2020
    Publication date: February 25, 2021
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jeonghwan JANG, Jae-Yoon KIM, Sungwon KO, Junghee KWAK, Sangseok LEE, Suyeol LEE, Seungwan CHAE, Pun Jae CHOI
  • Publication number: 20200025351
    Abstract: A light-emitting device includes an emission array including a plurality of light-emitting elements and a partition wall. The emission array includes a first region and a second region adjacent to each other. The partition wall is configured to isolate the first region and the second region from each other, such that the partition wall at least partially defines the first region in the emission array. The first region is associated with a first emission factor and the second region is associated with a second emission factor, the second emission factor different from the first emission factor.
    Type: Application
    Filed: June 27, 2019
    Publication date: January 23, 2020
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Yong-min KWON, Pun-jae CHOI, Geun-woo KO, Jong-hyun LEE
  • Publication number: 20200011518
    Abstract: A light source module including: a printed circuit board; a light emitting device mounted on the printed circuit board and including a plurality of subarrays each of the plurality of subarrays including a plurality of light emitting cells; and a plurality of driving chips mounted on the printed circuit board, wherein each of the plurality of driving chips respectively drives a corresponding one of the plurality of subarrays, wherein the plurality of subarrays are electrically isolated from each other.
    Type: Application
    Filed: July 8, 2019
    Publication date: January 9, 2020
    Inventors: Geun-woo Ko, Seung-woo Lee, Jun-ho Lee, Pun-jae Choi
  • Publication number: 20190326349
    Abstract: A semiconductor light-emitting device includes a plurality of light-emitting device structures separated from each other and arranged in a matrix form. A pad region at least partially surrounds the plurality of light-emitting device structures. The pad region is disposed outside of the plurality of light-emitting device structures. A partition structure is disposed on a first surface of the plurality of light-emitting device structures and is further disposed between adjacent light-emitting device structures of the plurality of light-emitting device structures. The partition structure defines a plurality of pixel spaces within the plurality of light-emitting device structures. A fluorescent layer is disposed on the first surface of the plurality of light-emitting device structures and fills each of the plurality of pixel spaces.
    Type: Application
    Filed: March 1, 2019
    Publication date: October 24, 2019
    Inventors: YONG-MIN KWON, GEUN-WOO KO, JUNG-WOOK LEE, JONG-HYUN LEE, PUN-JAE CHOI
  • Patent number: 10386020
    Abstract: A light emitting diode (LED) module array including: a plurality of LED groups connected to each other in series, each LED group including a single rod-shaped LED module or a plurality of LED modules connected to each other in parallel, wherein a number of LED modules included in a first LED group is different from a number of LED modules included in a second LED group.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: August 20, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Pun Jae Choi, Jin Wook Chung
  • Patent number: 10374003
    Abstract: A semiconductor light emitting device includes a plurality of light emitting cells having first and second surface opposing each other, the plurality of light emitting cells including a first conductivity-type semiconductor layer, a second conductivity-type semiconductor layer, and an active layer therebetween, an insulating layer on the second surface of the plurality of light emitting cells and having first and second openings defining a first contact region of the first conductivity-type semiconductor layer and a second contact region of the second conductivity-type semiconductor layer, respectively, a connection electrode on the insulating layer and connecting a first contact region and a second contact region of adjacent light emitting cells, a transparent support substrate on the first surface of the plurality of light emitting cells, and a transparent bonding layer between the plurality of light emitting cells and the transparent support substrate.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: August 6, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Pun Jae Choi, Jacob Chang-Lin Tarn, Han Kyu Seong, Jin Hyuk Song, Yoon Joon Choi
  • Patent number: 10333023
    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: May 30, 2018
    Date of Patent: June 25, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Pun Jae Choi, Yu Seung Kim, Jin Bock Lee
  • Patent number: 10256218
    Abstract: A light emitting device package includes: a plurality of light emitting chips configured to emit respective wavelength lights, each chip comprising electrodes at a bottom of the chip to form a flip-chip structure; a plurality of wirings directly connected to the electrodes of the chips, respectively; a plurality of electrode pads disposed below the chips and directly connected to the wirings, respectively; and a molding member integrally formed in a single layer structure to cover upper surfaces and side surfaces of the chips, and including a translucent material having a predetermined transmittance, wherein the wirings are disposed below a lower surface of the molding member.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: April 9, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kyoung Jun Kim, Yong Min Kwon, Geun Woo Ko, Pun Jae Choi, Dong Ho Kim
  • Patent number: RE47417
    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: August 25, 2015
    Date of Patent: June 4, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Pun Jae Choi, Jin Hyun Lee, Ki Yeol Park, Myong Soo Cho