Patents Assigned to Lumens Co., Ltd.
-
Patent number: 10847697Abstract: A side view LED module is disclosed. The side view LED module includes: a mount substrate; a side view LED package including an LED unit and a body including a first side to which the LED unit is bonded, a second side parallel to the first side, a third side orthogonal to the first and second sides and facing the mount substrate, and terminals formed on the first, second, and third sides; and solder joints through which the terminals are electrically connected to the mount substrate. Each of the terminals includes an opening formed at the second side and a concave electrode extending from the opening toward the first side and recessed relative to the third side. Each of the solders fills only a portion of an inner space of the corresponding concave electrode and includes a base portion formed on the third side and inner fillets extending upward along the inner wall surfaces of the concave electrode from the base portion.Type: GrantFiled: February 27, 2019Date of Patent: November 24, 2020Assignee: LUMENS CO., LTD.Inventors: Seunghyun Oh, Hyogu Jeon, Chigyun Song
-
Patent number: 10847504Abstract: A method for fabricating a micro-LED module is disclosed. The method includes: preparing a micro-LED including a plurality of electrode pads and a plurality of LED cells; preparing a submount substrate including a plurality of electrodes corresponding to the plurality of electrode pads; and flip-bonding the micro-LED to the submount substrate through a plurality of solders located between the plurality of electrode pads and the plurality of electrodes. The flip-bonding includes heating the plurality of solders by a laser.Type: GrantFiled: April 25, 2019Date of Patent: November 24, 2020Assignee: LUMENS CO., LTD.Inventors: Taekyung Yoo, Daewon Kim, Seongbok Yoon, Yelim Won, Myungji Moon, Hanbeet Chang, Yongpil Kim, Jaesoon Park
-
Patent number: 10847572Abstract: The present invention relates to a puzzle-type micro light emitting diode (LED) display device which is capable of implementing a display having various sizes, the micro LED display device including: a micro LED panel in which a plurality of micro LED pixels is arranged in rows and columns; and a micro LED driving substrate (backplane) configured to include an active matrix (AM) circuit unit including a plurality of CMOS cells corresponding to the plurality of micro LED pixels, and a control circuit unit disposed in an outer region of the AM circuit unit, in which the control circuit unit is disposed to be adjacent to two sides among four sides of the micro LED panel.Type: GrantFiled: October 9, 2018Date of Patent: November 24, 2020Assignee: LUMENS CO., LTD.Inventors: Eun Sung Shin, Dong Hee Cho, Yong Pil Kim, Myung Ji Moon, Han Beet Chang, Jae Soon Park
-
Patent number: 10818830Abstract: An LED module is disclosed. The LED module includes: a mount substrate including electrodes; an LED chip including a semiconductor stacked structure, a passivation layer covering the outer surface of the semiconductor stacked structure, and electrode pads connected to the outer surface of the semiconductor stacked structure through openings formed in the passivation layer; and solder bumps connecting the electrode pads to the corresponding electrodes and formed using a solder material represented by Sn-M (where M is a metal).Type: GrantFiled: March 25, 2020Date of Patent: October 27, 2020Assignee: LUMENS CO., LTD.Inventors: Daewon Kim, Yelim Won
-
Patent number: 10790267Abstract: A light emitting element is disclosed. The light emitting element includes: a mount substrate on which a first electrode pad, a second electrode pad, a third electrode pad, and a fourth electrode pad are disposed; a first vertical LED chip mounted on the mount substrate such that the bottom portion of the first vertical LED chip is connected to the first electrode pad; a second vertical LED chip mounted on the mount substrate such that the bottom portion of the second vertical LED chip is connected to the second electrode pad; a third vertical LED chip mounted on the mount substrate such that the bottom portion of the third vertical LED chip is connected to the third electrode pad; a light-transmitting conductive plate electrically connected to the top portions of the first vertical LED chip, the second vertical LED chip, and the third vertical LED chip; and a conductor connecting the light-transmitting conductive plate to the fourth electrode pad.Type: GrantFiled: July 27, 2018Date of Patent: September 29, 2020Assignee: LUMENS CO., LTD.Inventors: Taekyung Yoo, Seunghyun Oh, Sungsik Jo, Minpyo Kim, Jiyu Shin, Daewon Kim
-
Patent number: 10790427Abstract: Disclosed are a lens for a light-emitting device usable in a display apparatus or a lighting apparatus, and a method of manufacturing a light-emitting device package. The lens may include a lens body including a light-receiving portion provided in a lower surface of the lens body, a light-emitting portion provided on an upper surface of the lens body, and a recess provided at a center of the upper surface of the lens body, and a flat portion provided in a horizontal shape on a bottom surface of the recess perpendicularly to a main emission line of light emitted from a light-emitting device to emit at least a part of light received through the light-receiving portion, upward. A diameter of the flat portion may be 1/100 to 1/10 of an inlet diameter of the light-receiving portion.Type: GrantFiled: December 3, 2018Date of Patent: September 29, 2020Assignee: LUMENS CO., LTD.Inventors: Seung Hyun Oh, Yun Geon Cho, Young Mi Na, Byeong Cheol Shim, Bo Gyun Kim, Jong Kyung Lee
-
Patent number: 10784429Abstract: The present invention relates to a light emitting element package with a thin film pad and a manufacturing method thereof, and more particularly, to a light emitting element package with a thin film pad, which mounts and molds a light emitting diode on a thin film pad formed on a substrate and then, separates the light emitting diode from the substrate and configures a light emitting element package to effectively suppress occurrence of defective soldering or the like by securing a sufficient pad area and shape required for soldering by using the thin film pad while implementing a small light emitting element package such as a chip scale package or the like and a manufacturing method thereof.Type: GrantFiled: April 1, 2019Date of Patent: September 22, 2020Assignee: LUMENS CO., LTD.Inventors: Seung Hyun Oh, Hyo Gu Jeon, Chi Gyun Song, Jung Hye Park
-
Patent number: 10784418Abstract: A vertical type light emitting element is disclosed. The vertical type light emitting element includes: a color conversion electrode part including a first electrode pad and a color conversion layer; a reflective electrode part including a second electrode pad and a reflective layer; and a light emitting semiconductor part interposed between the color conversion electrode part and the reflective electrode part. The color conversion electrode part further includes an electrically conductive light transmissive plate. The first electrode pad and the color conversion layer are interposed between the light transmissive plate and the upper surface of the light emitting semiconductor part. Roughnesses are formed on the upper surface of the light emitting semiconductor part bordering the color conversion electrode part to increase the amount of light entering the color conversion electrode part through the light emitting semiconductor part.Type: GrantFiled: September 10, 2018Date of Patent: September 22, 2020Assignee: LUMENS CO., LTD.Inventors: Taekyung Yoo, Daewon Kim
-
Patent number: 10784241Abstract: Micro-LED array display devices are disclosed. One of the micro-LED display devices includes: a micro-LED panel including a plurality of micro-LED pixels; a CMOS backplane including a plurality of CMOS cells corresponding to the micro-LED pixels to individually drive the micro-LED pixels; and bumps electrically connecting the micro-LED pixels to the corresponding CMOS cells in a state in which the micro-LED pixels are arranged to face the CMOS cells. The micro-LED pixels are flip-chip bonded to the corresponding CMOS cells formed on the CMOS backplane through the bumps so that the micro-LED pixels are individually controlled.Type: GrantFiled: July 26, 2018Date of Patent: September 22, 2020Assignee: LUMENS CO., LTD.Inventors: HanBeet Chang, EunSung Shin, HyunYong Cho
-
Publication number: 20200294976Abstract: Disclosed is a method for constructing a micro-LED display module. The method includes: retaining micro-LED chips in a matrix on a chip retaining member; picking up the micro-LED chips on the chip retaining member and transferring the picked up micro-LED chips to a planar carrier member; pressing the micro-LED chips on the planar carrier member against a mount substrate; and heating solders disposed on the mount substrate above the melting point of the solders simultaneously with the pressing of the micro-LED chips against the mount substrate to bond the micro-LED chips to the mount substrate. The mount substrate is sucked by a suction chuck during heating of the solders.Type: ApplicationFiled: February 19, 2020Publication date: September 17, 2020Applicant: LUMENS CO., LTD.Inventor: Kihyun AN
-
Publication number: 20200295234Abstract: Disclosed is a method for fabricating CSP LEDs.Type: ApplicationFiled: February 19, 2020Publication date: September 17, 2020Applicant: LUMENS CO., LTD.Inventors: Daewon KIM, Yelim WON
-
Publication number: 20200287110Abstract: The present invention relates to a micro Light Emitting Diode (LED) matrix array package, including: a plurality of light emitting devices including a base substrate and a semiconductor laminated layer formed on the base substrate; a plurality of solder balls formed on the semiconductor laminated layer of the plurality of light emitting devices, respectively; a molding member configured to surround the light emitting devices and the solder balls; and a circuit board formed on the molding member, in which upper surfaces of the solder balls are exposed from the molding member, the circuit board includes a contact layer consisted of a metal pattern layer electrically connected with the plurality of solder balls exposed from the molding member and an insulating layer adjacently disposed to the metal pattern layer, and a thickness from the base substrate of each of the plurality of light emitting devices to an upper surface of each of the exposed solder balls is the same each other.Type: ApplicationFiled: November 20, 2019Publication date: September 10, 2020Applicant: LUMENS CO., LTD.Inventors: Seung Hyun OH, Jung Hyun PARK, In Yeol HONG
-
Patent number: 10756073Abstract: A micro-LED module is disclosed. The micro-LED module includes a flexible circuit board and a plurality of LED pixels mounted on the flexible circuit board. Each of the plurality of LED pixels includes a first micro-LED chip, a second micro-LED chip, and a third micro-LED chip. Each of the first micro-LED chip, the second micro-LED chip, and the third micro-LED chip has at least one side whose length is 100 ?m or less. Each of the first micro-LED chip, the second micro-LED chip, and the third micro-LED chip includes one or more electrode pads having a width of 80 ?m or less on the surface facing the flexible circuit board. The flexible circuit board includes a first flexible insulating film including electrode patterns formed on the upper surface thereof and connected to the electrode pads through solder bumps having a diameter of 80 ?m or less and a second flexible insulating film connected to the bottom of the first flexible insulating film through a first conductive pattern.Type: GrantFiled: June 18, 2018Date of Patent: August 25, 2020Assignee: LUMENS CO., LTD.Inventors: Daewon Kim, Taehong Jeong
-
Patent number: 10756071Abstract: Disclosed is a method for fabricating an LED module. The method includes: constructing a chip-on-carrier including a chip retainer having a horizontal bonding plane and a plurality of LED chips in which electrode pads are bonded to the bonding plane of the chip retainer; and transferring the plurality of LED chips in a predetermined arrangement from the chip retainer to a substrate by transfer printing. The transfer printing includes: primarily section-wise exposing a transfer tape to reduce the adhesive strength of the transfer tape such that bonding areas are formed at predetermined intervals on the transfer tape; and pressurizing the transfer tape against the LED chips on the chip retainer to attach the LED chips to the corresponding bonding areas of the transfer tape and detaching the electrode pads of the LED chips from the chip retainer to pick up the chips.Type: GrantFiled: December 17, 2019Date of Patent: August 25, 2020Assignee: LUMENS CO., LTD.Inventors: Taekyung Yoo, Daewon Kim, Jinmo Kim, Jinwon Choi, Jimin Her, Younghwan Shin, Sol Han, Kyujin Lee
-
Patent number: 10756070Abstract: Disclosed is a method for fabricating an LED module. The method includes: constructing a chip-on-carrier including a chip retainer having a horizontal bonding plane and a plurality of LED chips in which electrode pads are bonded to the bonding plane of the chip retainer; and transferring the plurality of LED chips in a predetermined arrangement from the chip retainer to a substrate by transfer printing. The transfer printing includes: primarily section-wise exposing a transfer tape to reduce the adhesive strength of the transfer tape such that bonding areas are formed at predetermined intervals on the transfer tape; and pressurizing the transfer tape against the LED chips on the chip retainer to attach the LED chips to the corresponding bonding areas of the transfer tape and detaching the electrode pads of the LED chips from the chip retainer to pick up the chips.Type: GrantFiled: September 19, 2019Date of Patent: August 25, 2020Assignee: LUMENS CO., LTD.Inventors: Taekyung Yoo, Daewon Kim, Jinmo Kim, Jinwon Choi, Jimin Her, Younghwan Shin, Sol Han, Kyujin Lee
-
Publication number: 20200227606Abstract: An LED module is disclosed. The LED module includes: a mount substrate including electrodes; an LED chip including a semiconductor stacked structure, a passivation layer covering the outer surface of the semiconductor stacked structure, and electrode pads connected to the outer surface of the semiconductor stacked structure through openings formed in the passivation layer; and solder bumps connecting the electrode pads to the corresponding electrodes and formed using a solder material represented by Sn-M (where M is a metal). Each of the electrode pads includes a multilayer body including a plurality of metal layers and a contact body connected to the multilayer body. The contact body includes a surface contact part in contact with the passivation layer outside the opening and an ohmic contact part in contact with the semiconductor stacked structure through the opening.Type: ApplicationFiled: March 25, 2020Publication date: July 16, 2020Applicant: LUMENS CO., LTD.Inventors: Daewon KIM, Yelim WON
-
Publication number: 20200219438Abstract: Disclosed is a micro light emitting diode (LED) display device which is capable of implementing a full color of high resolution, the micro LED display device including: a micro LED driving substrate (backplane) in which a plurality of CMOS cells is arranged in rows and columns; and a micro LED panel which is flip-chip bonded onto the micro LED driving substrate, and includes a plurality of micro LED pixels electrically connected with the plurality of CMOS cells, in which the micro LED panel includes the plurality of micro LED pixels formed by etching a first surface of an emission structure along a unit pixel region, and a plurality of separators formed on a second surface of the emission structure corresponding to positions of portions formed by etching the emission structure in a vertical direction.Type: ApplicationFiled: March 18, 2020Publication date: July 9, 2020Applicant: LUMENS CO., LTD.Inventors: Eun Sung SHIN, Dong Hee CHO, Yong Pil KIM, Myung Ji MOON, Han Beet CHANG, Jae Soon PARK
-
Publication number: 20200219854Abstract: The present invention relates to an apparatus and a method for manufacturing a light-emitting diode (LED) module and, more particularly, to an apparatus and a method for manufacturing a light-emitting diode module, which are capable of manufacturing a light emitting diode module on which a plurality of light-emitting diodes are mounted with an improved bonding speed and high accuracy by manufacturing the light-emitting diode module by simultaneously transferring the plurality of light emitting diodes onto a substrate by using a multi-eject pin or a multi-collet.Type: ApplicationFiled: May 30, 2018Publication date: July 9, 2020Applicant: LUMENS CO., LTD.Inventors: Seung Hyun OH, Sung Sik JO, Jung Hyun PARK
-
Publication number: 20200212017Abstract: An LED pixel device is disclosed. The LED pixel device includes a first light-transmitting substrate, a second light-transmitting substrate overlying the first light-transmitting substrate, a third light-transmitting substrate overlying the second light-transmitting substrate, a first light-emitting cell underlying the first light-transmitting substrate, a second light-emitting cell interposed between the first light-transmitting substrate and the second light-transmitting substrate, and a third light-emitting cell interposed between the second light-transmitting substrate and the third light-transmitting substrate. The first light-emitting cell, the second light-emitting cell, and the third light-emitting cell emit light of different wavelengths.Type: ApplicationFiled: June 4, 2018Publication date: July 2, 2020Applicant: LUMENS CO., LTD.Inventors: Seunghyun OH, Sungsik JO, Junghyun PARK, Byeonggeon KIM
-
Patent number: 10692845Abstract: A method for arraying micro-LED chips is disclosed. The method includes preparing a chip carrier formed with a plurality of chip pockets whose internal pressure is reduced through a plurality of suction holes, capturing the micro-LED chips in the corresponding chip pockets such that the micro-LED chips are in close contact with the bottoms of the chip pockets, and placing the micro-LED chips captured in the chip pockets on a base body. Each of the chip pockets includes a slope through which an inlet having a larger width than the bottom is connected to the bottom. The distances between the centers of the adjacent micro-LED chips placed on the base body are the same as those between the centers of the corresponding chip pockets.Type: GrantFiled: February 12, 2019Date of Patent: June 23, 2020Assignee: LUMENS CO., LTD.Inventors: Taekyung Yoo, Juok Seo, Bogyun Kim, Gunha Kim, Jugyeong Mun