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: 10256218Abstract: 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: GrantFiled: March 30, 2018Date of Patent: April 9, 2019Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Kyoung Jun Kim, Yong Min Kwon, Geun Woo Ko, Pun Jae Choi, Dong Ho Kim
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Publication number: 20190067538Abstract: A light-emitting package includes a light-emitting structure having a first surface and a second surface opposite to the first surface. The light-emitting package further includes an electrode layer disposed on the first surface and an insulating layer disposed on the light-emitting structure and the electrode layer. The light-emitting package additionally includes an interconnection conductive layer penetrating the insulating layer and connected to the electrode layer and a reflective layer disposed between the insulating layer and the interconnection conductive layer. The reflective layer reflects light generated from the light-emitting structure in a direction toward the second surface.Type: ApplicationFiled: March 19, 2018Publication date: February 28, 2019Inventors: Jung-wook LEE, Geun-woo KO, Pun-jae CHOI, Jae-ho Han
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Publication number: 20190019780Abstract: 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: ApplicationFiled: March 30, 2018Publication date: January 17, 2019Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Kyoung Jun KIM, Yong Min KWON, Geun Woo KO, Pun Jae CHOI, Dong Ho KIM
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Publication number: 20190017657Abstract: A filament type light emitting diode (LED) light source includes a plurality of LED modules, a coupler, and a common connection portion. The LED modules are in a polygonal prism structure and emit white light having different color temperatures or light of different wavelengths. Each LED module having a bar shape at a respective side surface of the polygonal prism structure and includes a first connection electrode and a second connection electrode. The coupler couples the LED modules to maintain the polygonal prism structure. The common connection portion is at one end of the polygonal prism structure and is commonly connected to the second connection electrode of each of the LED modules.Type: ApplicationFiled: March 1, 2018Publication date: January 17, 2019Inventors: Dong Ho KIM, Pun Jae CHOI
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Publication number: 20180351033Abstract: 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: ApplicationFiled: May 30, 2018Publication date: December 6, 2018Inventors: Pun Jae CHOI, Yu Seung KIM, Jin Bock LEE
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Publication number: 20180347766Abstract: 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: ApplicationFiled: December 20, 2017Publication date: December 6, 2018Inventors: Pun Jae Choi, Jin Wook Chung
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Publication number: 20180350872Abstract: 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: ApplicationFiled: December 21, 2017Publication date: December 6, 2018Inventors: Pun Jae CHOI, Jacob Chang-Lin TARN, Han Kyu SEONG, Jin Hyuk SONG, Yoon Joon CHOI
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Patent number: 9997663Abstract: 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 24, 2017Date of Patent: June 12, 2018Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Pun Jae Choi, Yu Seung Kim, Jin Bock Lee
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Patent number: 9905739Abstract: A semiconductor light emitting device may include a light emitting package. A light emitting package may include a light emitting stack including a sequential stack of a first conductivity type semiconductor layer, an active layer, and a second conductivity type semiconductor layer. An encapsulation layer may at least partially surround the second conductivity type semiconductor layer, and a wavelength conversion layer may cover the first conductivity type semiconductor layer. One or more of the encapsulation layer and the wavelength conversion layer may have a greater coefficient of thermal expansion (CTE) than a GaN-based compound semiconductor. The semiconductor light emitting device may include a stress applying structure that may apply a tensile stress to the light emitting stack. The light emitting stack may have reduced thermal droop at an operation temperature and improved luminous efficiency.Type: GrantFiled: November 2, 2016Date of Patent: February 27, 2018Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jin-wook Chung, Jung-jin Kim, Pun-jae Choi, Si-han Kim, Sung-don Gang, Ah-young Woo
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Patent number: 9887332Abstract: A semiconductor light-emitting device package includes: a light-emitting structure having a first surface, a second surface opposite to the first surface and side surfaces disposed between the first and the second surfaces, the light-emitting structure comprising a first light-emitting laminate and a second light-emitting laminate, each of the first and the second light emitting laminates including: a first conductivity-type semiconductor layer; an active layer, and a second conductivity-type semiconductor layer, an interconnector provided on the second surface of the light-emitting structure and configured to electrically connect the first and the second light-emitting laminates; a metal guide surrounding the side surfaces of the light-emitting structure; and an encapsulant surrounding the metal guide and the second and the side surfaces of the light-emitting structure and exposing the first surface of the light-emitting structure.Type: GrantFiled: February 29, 2016Date of Patent: February 6, 2018Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Pun Jae Choi, Geun Woo Ko, Yong Min Kwon, Ah Young Woo, Jun Ho Lee, Jin Wook Chung
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Publication number: 20170323999Abstract: 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: ApplicationFiled: May 24, 2017Publication date: November 9, 2017Inventors: Pun Jae CHOI, Yu Seung KIM, Jin Bock LEE
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Patent number: 9680050Abstract: 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: February 2, 2015Date of Patent: June 13, 2017Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Pun Jae Choi, Yu Seung Kim, Jin Bock Lee
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Publication number: 20170133563Abstract: A semiconductor light emitting device may include a light emitting package. A light emitting package may include a light emitting stack including a sequential stack of a first conductivity type semiconductor layer, an active layer, and a second conductivity type semiconductor layer. An encapsulation layer may at least partially surround the second conductivity type semiconductor layer, and a wavelength conversion layer may cover the first conductivity type semiconductor layer. One or more of the encapsulation layer and the wavelength conversion layer may have a greater coefficient of thermal expansion (CTE) than a GaN-based compound semiconductor. The semiconductor light emitting device may include a stress applying structure that may apply a tensile stress to the light emitting stack. The light emitting stack may have reduced thermal droop at an operation temperature and improved luminous efficiency.Type: ApplicationFiled: November 2, 2016Publication date: May 11, 2017Applicant: Samsung Electronics Co. , Ltd.Inventors: JIN-WOOK CHUNG, Jung-jin KIM, Pun-jae CHOI, Si-han KIM, Sung-don GANG, Ah-young WOO
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Publication number: 20160351767Abstract: A semiconductor light-emitting device package includes: a light-emitting structure having a first surface, a second surface opposite to the first surface and side surfaces disposed between the first and the second surfaces, the light-emitting structure comprising a first light-emitting laminate and a second light-emitting laminate, each of the first and the second light emitting laminates including: a first conductivity-type semiconductor layer; an active layer, and a second conductivity-type semiconductor layer, an interconnector provided on the second surface of the light-emitting structure and configured to electrically connect the first and the second light-emitting laminates; a metal guide surrounding the side surfaces of the light-emitting structure; and an encapsulant surrounding the metal guide and the second and the side surfaces of the light-emitting structure and exposing the first surface of the light-emitting structure.Type: ApplicationFiled: February 29, 2016Publication date: December 1, 2016Inventors: Pun Jae CHOI, Geun Woo KO, Yong Min KWON, Ah Young WOO, Jun Ho LEE, Jin Wook CHUNG
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Patent number: 9450151Abstract: A semiconductor light-emitting device includes a laminated semiconductor structure having a first surface and a second surface opposing each other, a first conductivity-type semiconductor layer and a second conductivity-type semiconductor layer respectively forming the first surface and the second surface, and an active layer. First and second electrodes are disposed on the first surface of the laminated semiconductor structure and the second surface of the laminated semiconductor structure, respectively. A connecting electrode extends to the first surface to be connected to the second electrode. A support substrate is disposed on the second electrode, and an insulating layer insulates the connecting electrode from the active layer and the first conductivity-type semiconductor layer.Type: GrantFiled: May 20, 2015Date of Patent: September 20, 2016Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Pun Jae Choi, Young Soo Park, Yung Ho Ryu, Tae Young Park, Jin Gi Hong
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Publication number: 20160240733Abstract: A semiconductor light emitting device is provided. The semiconductor light emitting device includes: a support substrate; a first layer disposed on the support substrate and applying tensile stress to the support substrate; a bonding layer disposed on the first layer; a second layer disposed on the bonding layer and applying compressive stress to the support substrate; and a light emitting structure disposed on the second layer and including a first conductivity-type semiconductor layer, an active layer, and a second conductivity-type semiconductor layer.Type: ApplicationFiled: February 12, 2016Publication date: August 18, 2016Inventors: Tae Young PARK, Sang Bum LEE, Pun Jae CHOI, Sung Joon KIM, Jin Wook CHUNG, Se Jun HAN, Su Min HWANGBO
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Patent number: 9379288Abstract: 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: GrantFiled: February 5, 2015Date of Patent: June 28, 2016Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Pun Jae Choi, Jae In Sim, Seok Min Hwang, Jin Hyun Lee, Myong Soo Cho, Ki Yeol Park
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Patent number: 9373746Abstract: 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: GrantFiled: March 25, 2015Date of Patent: June 21, 2016Inventors: Hae Youn Hwang, Pun Jae Choi, Jung Jae Lee
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Patent number: 9312249Abstract: 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: GrantFiled: July 22, 2014Date of Patent: April 12, 2016Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Pun Jae . Choi, Sang Bum Lee, Jin Bock Lee, Yu Seung Kim, Sang Yeob Song
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Patent number: 9305906Abstract: 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: GrantFiled: July 21, 2014Date of Patent: April 5, 2016Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Pun Jae Choi, Sang Bum Lee, Jin Bock Lee, Yu Seung Kim, Sang Yeob Song