Patents by Inventor Young-Jun Choi

Young-Jun 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).

  • Publication number: 20160238290
    Abstract: An air conditioner of the present invention includes: an outdoor unit having an outdoor heat exchanger and a compressor installed therein; a plurality of indoor units connected to the outdoor unit and having an indoor heat exchanger installed therein; a four-way valve provided on a discharge part side of the compressor; a refrigerant tube having first to third refrigerant tubes and connecting the four-way valve and the indoor heat exchanger, in which the first refrigerant tube is branched from between the four-way valve and the outdoor heat exchanger such that some of a refrigerant discharged from the compressor is fed into the indoor heat exchanger while bypassing the outdoor heat exchanger, the second refrigerant tube is connected to the four-way valve to feed all of the refrigerant discharged from the compressor into the indoor heat exchanger, and the third refrigerant tube is connected to the second refrigerant tube in parallel; and a heat pump valve provided at the third refrigerant tube to selectively c
    Type: Application
    Filed: September 22, 2014
    Publication date: August 18, 2016
    Inventors: Dong Seok Bae, Hyung Mo Koo, Jin Young Ahn, Hyun Jin Yoon, IL Yong Cho, Young Jun Choi
  • Patent number: 9374160
    Abstract: A method of registering a wireless device located in premises in a wireless network which is constructed in the premises. The method includes receiving a light signal, which includes network identification information of the wireless network constructed in the premises from at least one illumination device installed in the premises, and registering the wireless device in the wireless network constructed in the premises, by using the network identification information of the wireless network included in the received light signal.
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: June 21, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seong-man Park, Young-jun Choi
  • Publication number: 20160164693
    Abstract: Disclosed is a method of performing communication by a smart module in a home network system. The method includes: obtaining device level information of a device; identifying whether the device level information of the device indicates a device level which can provide only a mandatory function; when the device level information of the device indicates the performance which can provide only the mandatory function, transmitting a status request message making a request for status information of the device to the device; receiving a status response message including information indicating whether a status of the device has changed; and when the information indicates that the status of the device has changed, transmitting an event generation message to a host system.
    Type: Application
    Filed: July 16, 2014
    Publication date: June 9, 2016
    Inventors: Young-Jun CHOI, Seong-Man PARK, Joong-Ki MOON, Dong-Yun HAWNG
  • Patent number: 9240132
    Abstract: A nanophosphor sheet is presented. The nanophosphor sheet may include a base layer, a plurality of core-shell phosphors dispersed in the base layer, and a coating layer surrounding at least one core-shell phosphor among the plurality of core-shell phosphors. Also presented is a backlight device that includes a light source emitting light, a light guide plate receiving the light, and a plurality of core-shell phosphors positioned to receive the light and convert the light to white light. The core-shell phosphors may be incorporated into the light guide plate or be positioned on the light guide plate as a separate layer.
    Type: Grant
    Filed: February 6, 2013
    Date of Patent: January 19, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dong Hoon Kim, Hyun-Hwa Song, Seung Hwan Chung, Young Jun Choi, Byung Choon Yang, Han Moe Cha
  • Patent number: 9202399
    Abstract: A nanophosphor sheet is presented. The nanophosphor sheet may include a base layer, a plurality of core-shell phosphors dispersed in the base layer, and a coating layer surrounding at least one core-shell phosphor among the plurality of core-shell phosphors. Also presented is a backlight device that includes a light source emitting light, a light guide plate receiving the light, and a plurality of core-shell phosphors positioned to receive the light and convert the light to white light. The core-shell phosphors may be incorporated into the light guide plate or be positioned on the light guide plate as a separate layer.
    Type: Grant
    Filed: February 6, 2013
    Date of Patent: December 1, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dong Hoon Kim, Hyun-Hwa Song, Seung Hwan Chung, Young Jun Choi, Byung Choon Yang, Han Moe Cha
  • Publication number: 20150286096
    Abstract: According to an exemplary embodiment, the present system and method provide a quantum dot sheet including: a color conversion film that includes quantum dots and a polymer layer in which the quantum dots are dispersed; a first barrier film that is provided one a planar surface of the color conversion film; and a phosphor pattern that has a portion located along an edge portion of the surface of the first barrier film. The phosphor pattern, which may be printed onto the quantum dot sheet, prevents deterioration of the color conversion performance of the quantum dot sheet that may occur due to oxidization.
    Type: Application
    Filed: September 8, 2014
    Publication date: October 8, 2015
    Inventors: Dong Hoon KIM, Seung Hwan BAEK, Jin SEO, Myeong-Ju SHIN, Seung Hwan CHUNG, Young Jun CHOI
  • Patent number: 9153381
    Abstract: Disclosed herein is a chip device including: a multilayer body having a hexahedral shape; an external electrode covering both distal ends of the multilayer body; and a shape maintaining material contained in the external electrode to maintain a shape of the external electrode at the time of forming the external electrode.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: October 6, 2015
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jung Tae Park, Seung Heon Han, Young Jun Choi, Ji Hee Moon, Ki Won Kim, Joon Hwan Kwag
  • Publication number: 20150219936
    Abstract: A backlight assembly includes a light source portion including a plurality of light sources. The light sources are configured to emit light. A wavelength conversion member is disposed on the light source portion. The wavelength conversion member is configured to convert a wavelength of light emitted from the light source portion. The wavelength conversion member includes a first substrate disposed on the light source portion, a second substrate disposed on the first substrate, and a plurality of wavelength conversion layers interposed between the first substrate and the second substrate. Each of the plurality of wavelength conversion layers correspond to a light source of the plurality of light sources.
    Type: Application
    Filed: July 1, 2014
    Publication date: August 6, 2015
    Inventors: Dong Hoon KIM, Dong Hyeon LEE, Seung Hwan BAEK, Ju Yung YOON, Han Moe CHA, Young Jun CHOI
  • Publication number: 20150195036
    Abstract: A method of registering a wireless device located in premises in a wireless network which is constructed in the premises. The method includes receiving a light signal, which includes network identification information of the wireless network constructed in the premises from at least one illumination device installed in the premises, and registering the wireless device in the wireless network constructed in the premises, by using the network identification information of the wireless network included in the received light signal.
    Type: Application
    Filed: March 17, 2015
    Publication date: July 9, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seong-man PARK, Young-jun CHOI
  • Patent number: 9054799
    Abstract: A wireless light communication system and method using a plurality of light transmitting units driven by a same alternating current (AC) power, and a light receiving unit for receiving optical signals transmitted by the plurality of light transmitting units are provided. The wireless light communication method includes setting a channel for each of the plurality of light transmitting units such that light transmitting units having an overlapping area that is reachable by optical signals use different channels, detecting zero crossing of the AC power, synchronizing channels by using the detected zero crossing, and transmitting an optical signal through the set channel by using the plurality of light transmitting units, and receiving the optical signal transmitted by each of the plurality of light transmitting units by using the light receiving unit, and analyzing information included in the received optical signal.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: June 9, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seong-man Park, Young-jun Choi
  • Patent number: 9008519
    Abstract: A method of registering a wireless device located in premises in a wireless network which is constructed in the premises. The method includes receiving a light signal, which includes network identification information of the wireless network constructed in the premises from at least one illumination device installed in the premises, and registering the wireless device in the wireless network constructed in the premises, by using the network identification information of the wireless network included in the received light signal.
    Type: Grant
    Filed: October 13, 2011
    Date of Patent: April 14, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seong-man Park, Young-jun Choi
  • Publication number: 20140355657
    Abstract: Disclosed is a method of setting an interface in a communication modem supporting a plurality of interfaces. The method includes determining a first mode in which an interface to the device is set in advance when it is detected to receive a signal from a device connected to the communication modem. The method also includes waiting for a reception of data after integrated pins belonging to the communication modem is set to correspond to the first mode. The method also includes determining a change of the first mode according to a result of receiving the data for a predetermined time.
    Type: Application
    Filed: May 29, 2014
    Publication date: December 4, 2014
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Seong-Man Park, Young-Jun Choi, Joong-Ki Moon
  • Patent number: 8853064
    Abstract: The present invention is directed to a method of manufacturing a substrate, which includes loading a base substrate into a reaction furnace; forming a buffer layer on the base substrate; forming a separation layer on the buffer layer; forming a semiconductor layer on the separation layer at least two; and separating the semiconductor layer from the base substrate via the separation layer through natural cooling by unloading the base substrate from the reaction furnace.
    Type: Grant
    Filed: October 21, 2012
    Date of Patent: October 7, 2014
    Assignee: Lumigntech Co., Ltd.
    Inventors: Hae Yong Lee, Young Jun Choi, Jin Hun Kim, Hyun soo Jang, Hea Kon Oh, Hyun Hee Hwang
  • Patent number: 8834711
    Abstract: The present invention relates to an upstream ozone contact tank for removing residual ozone. The upstream ozone contact tank includes an inlet through which purified raw water flows, at least one contact chamber, at least one reaction chamber, an upstream contact chamber, and an outlet that discharges ozone-treated raw water. Especially, the invention provides an upstream contact chamber between the reaction chamber and outlet, wherein the upstream contact chamber includes carbonaceous filter media mounted on a porous plate. An openable gate unit is installed at the lower part of a panel partitioning a final reaction chamber and the upstream contact chamber and controls flow rate. Additionally, the invention enables upstream flow of the raw water flowing into the upstream contact chamber from the final reaction chamber so that the raw water may pass through the carbonaceous filter media upwardly.
    Type: Grant
    Filed: May 28, 2009
    Date of Patent: September 16, 2014
    Assignee: Seoul Metropolitan Government
    Inventors: Woo Hyeun Joe, Young Ae Baek, Gang-Seok Baek, Byeong-Eui Hong, Byeong-Chul Jang, Mun-Ho Son, Young Jun Choi, Sang Tae Han
  • Publication number: 20140146560
    Abstract: A reflection sheet of display backlighting unit is designed to be spaced apart by a predetermined gap distance from an overlying optical layer. However, the reflection sheet may inadvertently come into at least partial contact with the overlying optical layer. The reflection sheet is configured to avoid the creation of line contacts and wide area contacts with the optical layer. More specifically, the reflection sheet includes an upper skin layer having particles embedded therein. An average of surface roughness or height differences of the protrusions is caused to have a value of 15 ?m or larger, and an interval between the adjacent protrusions is caused to be 200 ?m or less.
    Type: Application
    Filed: July 9, 2013
    Publication date: May 29, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Dong Hoon KIM, Young Jun CHOI
  • Patent number: 8729670
    Abstract: Provided is a semiconductor substrate and a method for manufacturing the same. The semiconductor substrate includes a substrate, a discontinuously formed hemispheric metal layer on the substrate, and a semiconductor layer on the hemispheric metal layer. A plurality of voids on the interface of the substrate and discontinuous hemisphere are formed to absorb or relax the stain of interface. Accordingly, even if a subsequent layer is relatively thickly formed on the substrate, substrate bow or warpage can be minimized.
    Type: Grant
    Filed: April 15, 2009
    Date of Patent: May 20, 2014
    Assignee: Lumigntech Co., Ltd.
    Inventors: Hae Yong Lee, Young Jun Choi, Jung Gyu Kim
  • Publication number: 20140085770
    Abstract: Disclosed herein is a chip device including: a multilayer body having a hexahedral shape; an external electrode covering both distal ends of the multilayer body; and a shape maintaining material contained in the external electrode to maintain a shape of the external electrode at the time of forming the external electrode.
    Type: Application
    Filed: March 14, 2013
    Publication date: March 27, 2014
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jung Tae Park, Seung Heon Han, Young Jun Choi, Ji Hee Moon, Ki Won Kim, Joon Hwan Kwag
  • Publication number: 20140056024
    Abstract: A nanophosphor sheet is presented. The nanophosphor sheet may include a base layer, a plurality of core-shell phosphors dispersed in the base layer, and a coating layer surrounding at least one core-shell phosphor among the plurality of core-shell phosphors. Also presented is a backlight device that includes a light source emitting light, a light guide plate receiving the light, and a plurality of core-shell phosphors positioned to receive the light and convert the light to white light. The core-shell phosphors may be incorporated into the light guide plate or be positioned on the light guide plate as a separate layer.
    Type: Application
    Filed: February 6, 2013
    Publication date: February 27, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dong Hoon KIM, Hyun-Hwa SONG, Seung Hwan CHUNG, Young Jun CHOI, Byung Choon YANG, Han Moe CHA
  • Publication number: 20140036528
    Abstract: A light guiding plate includes: a light guiding substrate; and a plurality of optical scattering patterns positioned on a first surface of the light guiding substrate. The plurality of optical scattering patterns respectively includes a binder, a scattering particle and a semiconductor nanocrystal. A color of light emitted from the plurality of optical scattering patterns is substantially the same.
    Type: Application
    Filed: November 12, 2012
    Publication date: February 6, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seung-Mo KIM, Dong Hoon KIM, Seung Hwan CHUNG, Young Jun CHOI, Jin Sung CHOI
  • Publication number: 20140035941
    Abstract: Provided are an image signal compensation apparatus and a liquid crystal display (LCD) including the same. The image signal compensation apparatus includes a lookup table (LUT) and an image signal compensation unit. The LUT includes reference data that corresponds to each combination of first and second reference gray levels and is arranged in a matrix. The image signal compensation unit receives first and second image signals, receives reference data corresponding to the first and second image signals from the LUT, and compensates the second image signal using the reference data. The reference data includes diagonal reference data located on a diagonal line in the matrix, and at least one diagonal reference data from among the diagonal reference data has a different value from a corresponding combination of the first and second reference gray levels.
    Type: Application
    Filed: October 8, 2013
    Publication date: February 6, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Bong-Im PARK, Bong-Ju Jun, Yun-Jae Kim, Jae-Won Jeong, Young-Jun Choi, Dong-Beom Cho, Woo-Jin Jung, Kang-Hyun Kim