Patents Assigned to PSI Co., Ltd.
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Publication number: 20180287010Abstract: The present invention relates to an electrode assembly comprising nano-scale-LED elements and a method for manufacturing the same and, more specifically, to an electrode assembly comprising nano-scale-LED elements and a method for manufacturing the same, in which the number of nano-scale-LED elements included in a unit area of the electrode assembly is increased, the light extraction efficiency of individual nano-scale-LED elements is increased so as to maximize light intensity per unit area, and at the same time, nano-scale-LED elements on a nanoscale are connected to an electrode without a fault such as an electrical short circuit.Type: ApplicationFiled: November 13, 2015Publication date: October 4, 2018Applicant: PSI CO., LTD.Inventor: Yeon Goog SUNG
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Patent number: 10062804Abstract: A method of manufacturing a nano-scale LED electrode assembly including a selective metal ohmic layer is disclosed. Specifically, the method can be useful in increasing conductivity between a nano-scale LED device and electrodes and also reducing contact resistance therebetween by depositing a conductive material in a region in which the nano-scale LED device comes in contact with the electrodes so as to improve the contact between the nano-scale LED device and the electrodes, thereby further improving light extraction efficiency of the nano-scale LED device.Type: GrantFiled: November 17, 2016Date of Patent: August 28, 2018Assignee: PSI CO., LTD.Inventors: Young Rag Do, Yeon Goog Sung
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Patent number: 9978725Abstract: Provided is an LED lamp using a nano-scale LED electrode assembly. The LED lamp using the nano-scale LED electrode assembly may solve limitations in which, when a nano-scale LED device according to the related art stands up and is three-dimensionally coupled to an electrode, it is difficult to allow the nano-scale LED device to stand up, and when the nano-scale LED devices are coupled to one-to-one correspond to electrodes different from each other, product quality is deteriorated. Thus, the nano-scale LED device having a nano unit may be connected to the two electrodes different from each other without causing defects, and light extraction efficiency may be improved due to the directivity of the nano-scale LED devices connected to the electrodes.Type: GrantFiled: July 8, 2014Date of Patent: May 22, 2018Assignee: PSI CO., LTD.Inventor: Young Rag Do
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Patent number: 9935241Abstract: The present disclosure relates to a method for manufacturing a self-assembled nano-scale LED electrode assembly and more particularly, to a method for manufacturing a self-assembled nano-scale LED electrode assembly in which a nano-scale LED device can be self-aligned on two different electrodes without being chemically and physically damaged and the number of nano-scale LED devices to be mounted can be remarkably increased, and alignment and electrical connection of the LED devices can be further improved.Type: GrantFiled: January 6, 2017Date of Patent: April 3, 2018Assignee: PSI CO., LTD.Inventors: Young Rag Do, Yeon Goog Sung
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Publication number: 20170317228Abstract: The present invention relates to a nano-scale light-emitting diode (LED) element for a horizontal array assembly, a manufacturing method thereof, and a horizontal array assembly including the same, and more particularly, to a nano-scale LED element for a horizontal array assembly that can significantly increase the number of nano-scale LED elements connected to an electrode line, facilitate an arrangement of the elements, and implement a horizontal array assembly having a very good electric connection between an electrode and an element and a significant high quantity of light when a horizontal array assembly having the nano-scale LED elements laid in a length direction thereof and connected to the electrode line is manufactured, a manufacturing method thereof, and a horizontal array assembly including the same.Type: ApplicationFiled: November 13, 2015Publication date: November 2, 2017Applicant: PSI CO., LTD.Inventor: Yeon Goog SUNG
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Patent number: 9773761Abstract: Provided are a nano-scale LED assembly and a method for manufacturing the same. First, a nano-scale LED device that is independently manufactured may be aligned and connected to two electrodes different from each other to solve a limitation in which a nano-scale LED device having a nano unit is coupled to two electrodes different from each other in a stand-up state. Also, since the LED device and the electrodes are disposed on the same plane, light extraction efficiency of the LED device may be improved. Furthermore, the number of nano-scale LED devices may be adjusted. Second, since the nano-scale LED device does not stand up to be three-dimensionally coupled to upper and lower electrodes, but lies to be coupled to two electrodes different from each other on the same plane, the light extraction efficiency may be very improved.Type: GrantFiled: July 8, 2014Date of Patent: September 26, 2017Assignee: PSI CO., LTDInventor: Young Rag Do
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Publication number: 20170200859Abstract: The present disclosure relates to a method for manufacturing a self-assembled nano-scale LED electrode assembly and more particularly, to a method for manufacturing a self-assembled nano-scale LED electrode assembly in which a nano-scale LED device can be self-aligned on two different electrodes without being chemically and physically damaged and the number of nano-scale LED devices to be mounted can be remarkably increased, and alignment and electrical connection of the LED devices can be further improved.Type: ApplicationFiled: January 6, 2017Publication date: July 13, 2017Applicant: PSI Co., Ltd.Inventors: Young Rag DO, Yeon Goog SUNG
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Publication number: 20170141279Abstract: A method of manufacturing a nano-scale LED electrode assembly including a selective metal ohmic layer is disclosed. Specifically, the method can be useful in increasing conductivity between a nano-scale LED device and electrodes and also reducing contact resistance therebetween by depositing a conductive material in a region in which the nano-scale LED device comes in contact with the electrodes so as to improve the contact between the nano-scale LED device and the electrodes, thereby further improving light extraction efficiency of the nano-scale LED device.Type: ApplicationFiled: November 17, 2016Publication date: May 18, 2017Applicant: PSI Co., Ltd.Inventors: Young Rag DO, Yeon Goog SUNG
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Publication number: 20170138549Abstract: The present invention relates to a nano-scale light emitting diode (LED) electrode assembly emitting polarized light, a method of manufacturing the same, and a polarized LED lamp having the same, and more particularly, to a nano-scale LED electrode assembly in which partially polarized light close to light that is linearly polarized having one direction is emitted as an emitted light when applying a driving voltage to the nano-scale LED electrode assembly and also nano-scale LED devices are connected to a nano-scale electrode without defects such as an electrical short circuit while maximizing a light extraction efficiency, a method of manufacturing the same, and a polarized LED lamp having the same.Type: ApplicationFiled: November 17, 2016Publication date: May 18, 2017Applicant: PSI Co., Ltd.Inventors: Young Rag DO, Yeon Goog SUNG
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Patent number: 9570425Abstract: Provided are a display including a nano-scale LED and a method for manufacturing the same. In detail, nano-scale LED devices, each of which has a nano unit, are connected to nano-scale electrodes without electrical short-circuit to overcome a limitation in which it is difficult to allow nano-scale LED devices according to the related art to stand up and be coupled to electrodes and a limitation in which it is difficult to allow the nano-scale LED devices to be one-to-one coupled to the nano-scale electrodes different from each other, thereby realizing a display including the nano-scale LEDs. Also, the display may have superior light extraction efficiency and prevent defective pixels and the defect of the whole display due to the defects of the nano-scale LED devices, which may rarely occur, from occurring to minimize the defects of the display including the nano-scale LEDs and maintain its original function.Type: GrantFiled: July 8, 2014Date of Patent: February 14, 2017Assignee: PSI CO., LTD.Inventor: Young Rag Do
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Patent number: 9293668Abstract: A phosphor-converted single-color LED is provided. The phosphor-converted single-color LED includes a long-wavelength pass filter having a special construction. The phosphor-converted single-color LED has high color purity and efficiency despite the use of a phosphor in the form of a nano/micro powder.Type: GrantFiled: April 1, 2011Date of Patent: March 22, 2016Assignee: PSI CO., LTD.Inventors: Young-Rag Do, Yeon-Goog Sung
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Patent number: 9112112Abstract: Disclosed is a subminiature LED element and a manufacturing method thereof. The subminiature LED element includes a first conductive semiconductor layer, an active layer formed on the first conductive semiconductor layer, and a semiconductor light emission element of a micrometer or nanometer size including a second conductive semiconductor layer formed on the active layer, wherein the outer circumference of the semiconductor light emission element is coated with an insulation film.Type: GrantFiled: April 27, 2012Date of Patent: August 18, 2015Assignee: PSI CO., LTD.Inventors: Young-Rag Do, Yeon-Goog Sung
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Patent number: 9059114Abstract: Disclosed is a full-color LED display device and a manufacturing method thereof. The full-color LED display device includes 1) a plurality of first electrodes formed on a substrate, 2) at least five subminiature blue LED elements attached to each unit pixel site formed on the first electrode, 3) an insulation layer formed on the substrate and the blue LED element, 4) a plurality of second electrodes formed on the insulation layer, and 5) a green color conversion layer and a red color conversion layer formed on the second electrode corresponding to partial unit pixel sites selected from the unit pixel sites.Type: GrantFiled: April 27, 2012Date of Patent: June 16, 2015Assignee: PSI CO., LTDInventors: Young-Rag Do, Yeon-Goog Sung
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Patent number: 9024335Abstract: Disclosed is a white LED device using a multi-package. The white LED device maximizes the efficiency of a green LED in the yellow gap to minimize a deviation in performance between the other color chips, in comparison with conventional white LED devices using RGB multi-chips. In addition, deviations in temperature, current and droop characteristics between the chips can be minimized, contributing to the simplification of a driving circuit. Therefore, the white LED device is suitable for commercialization. Furthermore, the white LED device has a higher color rendering index (Ra) (>80) than conventional white LED devices having single-package structures. The correlated color temperatures of the white LED device are controllable in the range of 2,700 to 12,000 K. The white LED device can express abundant colors for emotion lighting and can emit white light with high efficiency.Type: GrantFiled: August 22, 2011Date of Patent: May 5, 2015Assignee: PSI Co., Ltd.Inventors: Young-Rag Do, Yeon-Goog Sung
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Publication number: 20140145237Abstract: Disclosed is a subminiature LED element and a manufacturing method thereof. The subminiature LED element includes a first conductive semiconductor layer, an active layer formed on the first conductive semiconductor layer, and a semiconductor light emission element of a micrometer or nanometer size including a second conductive semiconductor layer formed on the active layer, wherein the outer circumference of the semiconductor light emission element is coated with an insulation film.Type: ApplicationFiled: April 27, 2012Publication date: May 29, 2014Applicants: PSI CO., LTD., KOOKMIN UNIVERSITY INDUSTRY ACADEMY COOPERATION FOUNDATIONInventors: Young-Rag Do, Yeon-Goog Sung
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Publication number: 20130087821Abstract: A phosphor-converted single-color LED is provided. The phosphor-converted single-color LED includes a long-wavelength pass filter having a special construction. The phosphor-converted single-color LED has high color purity and efficiency despite the use of a phosphor in the form of a nano/micro powder.Type: ApplicationFiled: April 1, 2011Publication date: April 11, 2013Applicant: PSI CO., LTD.Inventors: Young-Rag Do, Yeon-Goog Sung
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Patent number: 7943947Abstract: Disclosed herein is an LED device which comprises a light-emitting diode (LED) and a laminate formed on the LED, the laminate consisting of a substrate and a phosphor thin film laminated on the substrate, wherein the phosphor thin film has a two-dimensional nanoperiodic structure formed in a forward direction of the thin film and has an extinction coefficient of 10?3 or less. The LED device has higher luminescent efficiency and luminance than conventional LED devices. In addition, since the LED device uses no slurry and a lesser amount of phosphor than conventional LED devices, it is advantageous in terms of optical homogeneity and reduced costs.Type: GrantFiled: July 25, 2005Date of Patent: May 17, 2011Assignees: PSI Co., Ltd.Inventor: Young Rag Do