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).
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Patent number: 12046627Abstract: 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: GrantFiled: April 12, 2022Date of Patent: July 23, 2024Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yong-Min Kwon, Geun-Woo Ko, Jung-Wook Lee, Jong-Hyun Lee, Pun-Jae Choi
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Patent number: 11658259Abstract: 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: GrantFiled: January 31, 2022Date of Patent: May 23, 2023Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jeonghwan Jang, Jae-Yoon Kim, Sungwon Ko, Junghee Kwak, Sangseok Lee, Suyeol Lee, Seungwan Chae, Pun Jae Choi
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Patent number: 11592155Abstract: 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: GrantFiled: July 12, 2021Date of Patent: February 28, 2023Assignee: Samsung Electronics Co., Ltd.Inventors: Yong-min Kwon, Pun-jae Choi, Geun-woo Ko, Jong-hyun Lee
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Patent number: 11573006Abstract: 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: GrantFiled: April 15, 2022Date of Patent: February 7, 2023Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Geun-woo Ko, Seung-woo Lee, Jun-ho Lee, Pun-jae Choi
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Publication number: 20220243906Abstract: 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: ApplicationFiled: April 15, 2022Publication date: August 4, 2022Inventors: Geun-woo KO, Seung-woo Lee, Jun-ho Lee, Pun-jae Choi
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Publication number: 20220238597Abstract: 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: ApplicationFiled: April 12, 2022Publication date: July 28, 2022Inventors: YONG-MIN KWON, Geun-Woo Ko, Jung-Wook Lee, Jong-Hyun Lee, Pun-Jae Choi
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Publication number: 20220158023Abstract: 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: ApplicationFiled: January 31, 2022Publication date: May 19, 2022Applicant: SAMSUNG ELECTRONICS., LTD.Inventors: Jeonghwan JANG, Jae-Yoon KIM, Sungwon Ko, Junghee KWAK, Sangseok LEE, Suyeol LEE, Seungwan CHAE, Pun Jae CHOI
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Patent number: 11306908Abstract: 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: GrantFiled: July 8, 2019Date of Patent: April 19, 2022Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Geun-woo Ko, Seung-woo Lee, Jun-ho Lee, Pun-jae Choi
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Patent number: 11302743Abstract: 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: GrantFiled: March 1, 2019Date of Patent: April 12, 2022Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yong-Min Kwon, Geun-Woo Ko, Jung-Wook Lee, Jong-Hyun Lee, Pun-Jae Choi
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Patent number: 11239385Abstract: 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: GrantFiled: April 9, 2020Date of Patent: February 1, 2022Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jeonghwan Jang, Jae-Yoon Kim, Sungwon Ko, Junghee Kwak, Sangseok Lee, Suyeol Lee, Seungwan Chae, Pun Jae Choi
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Publication number: 20210341125Abstract: 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: ApplicationFiled: July 12, 2021Publication date: November 4, 2021Applicant: Samsung Electronics Co., Ltd.Inventors: Yong-min KWON, Pun-jae CHOI, Geun-woo KO, Jong-hyun LEE
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Patent number: 11060689Abstract: 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: GrantFiled: June 27, 2019Date of Patent: July 13, 2021Assignee: Samsung Electronics Co., Ltd.Inventors: Yong-min Kwon, Pun-jae Choi, Geun-woo Ko, Jong-hyun Lee
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Publication number: 20210057602Abstract: 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: ApplicationFiled: April 9, 2020Publication date: February 25, 2021Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jeonghwan JANG, Jae-Yoon KIM, Sungwon KO, Junghee KWAK, Sangseok LEE, Suyeol LEE, Seungwan CHAE, Pun Jae CHOI
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Publication number: 20200025351Abstract: 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: ApplicationFiled: June 27, 2019Publication date: January 23, 2020Applicant: Samsung Electronics Co., Ltd.Inventors: Yong-min KWON, Pun-jae CHOI, Geun-woo KO, Jong-hyun LEE
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Publication number: 20200011518Abstract: 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: ApplicationFiled: July 8, 2019Publication date: January 9, 2020Inventors: Geun-woo Ko, Seung-woo Lee, Jun-ho Lee, Pun-jae Choi
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Publication number: 20190326349Abstract: 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: ApplicationFiled: March 1, 2019Publication date: October 24, 2019Inventors: YONG-MIN KWON, GEUN-WOO KO, JUNG-WOOK LEE, JONG-HYUN LEE, PUN-JAE CHOI
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Patent number: 10386020Abstract: 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: GrantFiled: December 20, 2017Date of Patent: August 20, 2019Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Pun Jae Choi, Jin Wook Chung
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Patent number: 10374003Abstract: 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: GrantFiled: December 21, 2017Date of Patent: August 6, 2019Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Pun Jae Choi, Jacob Chang-Lin Tarn, Han Kyu Seong, Jin Hyuk Song, Yoon Joon Choi
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Patent number: 10333023Abstract: 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: GrantFiled: May 30, 2018Date of Patent: June 25, 2019Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Pun Jae Choi, Yu Seung Kim, Jin Bock Lee
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Patent number: RE47417Abstract: 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: GrantFiled: August 25, 2015Date of Patent: June 4, 2019Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Pun Jae Choi, Jin Hyun Lee, Ki Yeol Park, Myong Soo Cho