Patents by Inventor Chan-Hong Park

Chan-Hong Park 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).

  • Patent number: 9354385
    Abstract: A curved display apparatus includes a curved display panel, a curved bottom sash disposed at a rear of the display panel such that the curved bottom sash is spaced apart from the display panel, and a plurality of backlight units disposed at opposite inner sides of the bottom sash to irradiate light to the bottom sash. The inside of the bottom sash reflects the light irradiated from the backlight units to the display panel. Consequently, a light guide plate may be omitted from the display apparatus.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: May 31, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jun Seok An, Chan Hong Park, Young Chol Lee, Byoung Jin Cho, Sung Hwan Kim, Jee Su Park
  • Patent number: 9338905
    Abstract: A curved display apparatus is provided. The curved display apparatus includes a fixing member which is curved; and a display panel which is attached to the fixing member and curved along the fixing member.
    Type: Grant
    Filed: July 24, 2013
    Date of Patent: May 10, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jun-seok Ahn, Chan-hong Park
  • Patent number: 9287159
    Abstract: A device isolation layer of the memory device includes a first insulation layer in a lower portion of a device isolation trench, a second insulation layer in an upper portion of the device isolation trench and a separation layer between the first insulation layer and the second insulation layer. First and second conductive fillers are in the first and second insulation layers and are separated by the separation layer.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: March 15, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyun-Chul Kim, Jae-Seok Kim, Chan-Hong Park
  • Publication number: 20150346542
    Abstract: A curved display apparatus and a multi display system having the same are provided. The curved display apparatus includes a display panel, and a fixation member which fixes the display panel so that the display panel is curved with multiple curvatures.
    Type: Application
    Filed: July 13, 2015
    Publication date: December 3, 2015
    Applicants: SAMSUNG DISPLAY CO., LTD., SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jun-seok AN, Dong-wook KIM, Sung-hwan KIM, Jee-su PARK, Chan-hong PARK, Byung-kook SIM, Jong-cheol LEE, Cheol-se LEE, Hyeong-sik CHOI, Byung-wook AHN, Cheong-hun LEE
  • Publication number: 20150294899
    Abstract: A device isolation layer of the memory device includes a first insulation layer in a lower portion of a device isolation trench, a second insulation layer in an upper portion of the device isolation trench and a separation layer between the first insulation layer and the second insulation layer. First and second conductive fillers are in the first and second insulation layers and are separated by the separation layer.
    Type: Application
    Filed: June 25, 2015
    Publication date: October 15, 2015
    Inventors: Hyun-Chul KIM, Jae-Seok KIM, Chan-Hong PARK
  • Publication number: 20150286235
    Abstract: Certain aspects of the present disclosure provide voltage regulating circuits which are power efficient, low noise, and substantially insensitive to changes in process technology, power supply voltage, and temperature. Such circuits may be used to provide the regulated voltage for a voltage-controlled oscillator (VCO), for example, as found in a radio frequency front end (RFFE). One example voltage regulating circuit generally includes a current source configured to supply or sink a reference current and a current mirror having a bias branch and a main branch, wherein the bias branch is connected with the current source, wherein the main branch includes a source follower to provide the regulated voltage, and wherein the reference current is available at a node for the regulated voltage.
    Type: Application
    Filed: April 3, 2014
    Publication date: October 8, 2015
    Applicant: QUALCOMM INCORPORATED
    Inventors: Mohammad Bagher VAHID FAR, Abbas KOMIJANI, Chan Hong PARK
  • Patent number: 9136270
    Abstract: A device isolation layer of the memory device includes a first insulation layer in a lower portion of a device isolation trench, a second insulation layer in an upper portion of the device isolation trench and a separation layer between the first insulation layer and the second insulation layer. First and second conductive fillers are in the first and second insulation layers and are separated by the separation layer.
    Type: Grant
    Filed: September 16, 2013
    Date of Patent: September 15, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyun-Chul Kim, Jae-Seok Kim, Chan-Hong Park
  • Publication number: 20150245488
    Abstract: Disclosed herein is a display apparatus that reduces a magnitude of a tension applied to a flexible PCB when a display panel is provided with a curved surface, and prevents damage of a driving chip. The display apparatus in accordance with exemplary embodiments includes a display panel configured to display an image, a source printed circuit board configured to control the display panel, and a flexible PCB that connects the display panel and the source printed circuit board. A length of at least one side edge of the flexible PCB is formed longer than a minimum length from the display panel to the source printed circuit board.
    Type: Application
    Filed: September 2, 2014
    Publication date: August 27, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hyo Jae JANG, Chan Hong PARK, Jeong Ho BANG, Jong Myung LEE, Sun Weon JEONG, Hyeong Sik CHOI
  • Patent number: 9113553
    Abstract: A curved display apparatus and a multi display system having the same are provided. The curved display apparatus includes a display panel, and a fixation member which fixes the display panel so that the display panel is curved with multiple curvatures.
    Type: Grant
    Filed: May 17, 2013
    Date of Patent: August 18, 2015
    Assignees: SAMSUNG ELECTRONICS CO., LTD., Samsung Display Co., Ltd.
    Inventors: Jun-seok An, Dong-wook Kim, Sung-hwan Kim, Jee-su Park, Chan-hong Park, Byung-kook Sim, Jong-cheol Lee, Cheol-se Lee, Hyeong-sik Choi, Byung-wook Ahn, Cheong-hun Lee
  • Patent number: 8979294
    Abstract: A curved display device is provided including a display panel having a constant curvature and displaying an image, a backlight unit having the same curvature as that of the display panel, disposed at a rear surface of the display panel, and emitting light to the display panel, and a control unit locally controlling light emission of the backlight unit such that luminance of a light leakage region of the display panel is adjusted. Occurrence of light leakage in the curved display device is prevented, and thus, luminance of the curved display device is kept constant.
    Type: Grant
    Filed: July 29, 2013
    Date of Patent: March 17, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jun Seok An, Chan Hong Park, Kun Ho Cho
  • Patent number: 8854098
    Abstract: System for I-Q phase mismatch detection and correction. An apparatus to correct a phase mismatch between I and Q signals includes a correction circuit configured to continuously compare a reference signal and a phase error signal associated with the I and Q signals to generate an I bias signal and a Q bias signal, a first CMOS buffer configured to receive the I signal and the I bias signal and output a phase adjusted I signal based on the I bias signal, and a second CMOS buffer configured to receive the Q signal and the Q bias signal and output a phase adjusted Q signal based on the Q bias signal.
    Type: Grant
    Filed: January 21, 2011
    Date of Patent: October 7, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Jeongsik Yang, Chan Hong Park, Sang-oh Lee
  • Publication number: 20140133073
    Abstract: A curved display apparatus is provided. The curved display apparatus includes a fixing member which is curved; and a display panel which is attached to the fixing member and curved along the fixing member.
    Type: Application
    Filed: July 24, 2013
    Publication date: May 15, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jun-seok AHN, Chan-hong PARK
  • Publication number: 20140117459
    Abstract: A device isolation layer of the memory device includes a first insulation layer in a lower portion of a device isolation trench, a second insulation layer in an upper portion of the device isolation trench and a separation layer between the first insulation layer and the second insulation layer. First and second conductive fillers are in the first and second insulation layers and are separated by the separation layer.
    Type: Application
    Filed: September 16, 2013
    Publication date: May 1, 2014
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Hyun-Chul KIM, Jae-Seok KIM, Chan-Hong PARK
  • Publication number: 20140111736
    Abstract: A curved display apparatus includes a curved display panel, a curved bottom sash disposed at a rear of the display panel such that the curved bottom sash is spaced apart from the display panel, and a plurality of backlight units disposed at opposite inner sides of the bottom sash to irradiate light to the bottom sash. The inside of the bottom sash reflects the light irradiated from the backlight units to the display panel. Consequently, a light guide plate may be omitted from the display apparatus.
    Type: Application
    Filed: October 23, 2013
    Publication date: April 24, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jun Seok AN, Chan Hong PARK, Young Chol LEE, Byoung Jin CHO, Sung Hwan KIM, Jee Su PARK
  • Publication number: 20140078720
    Abstract: A curved display device is provided including a display panel having a constant curvature and displaying an image, a backlight unit having the same curvature as that of the display panel, disposed at a rear surface of the display panel, and emitting light to the display panel, and a control unit locally controlling light emission of the backlight unit such that luminance of a light leakage region of the display panel is adjusted. Occurrence of light leakage in the curved display device is prevented, and thus, luminance of the curved display device is kept constant.
    Type: Application
    Filed: July 29, 2013
    Publication date: March 20, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jun Seok AN, Chan Hong Park, Kun Ho Cho
  • Publication number: 20140061743
    Abstract: Provided are a semiconductor device and a method of fabricating the same. The semiconductor device may include a substrate, a device isolation layer defining one or more active regions at the substrate, and one or more gate lines buried in the substrate. Each of the gate lines comprises a first portion on the device isolation layer and a second portion on an active region of the active regions. A top surface of the first portion is lower than a top surface of the second portion.
    Type: Application
    Filed: July 18, 2013
    Publication date: March 6, 2014
    Inventors: Hyunchul Kim, Jae-Seok Kim, Chan-Hong Park
  • Publication number: 20130321740
    Abstract: A curved display apparatus and a multi display system having the same are provided. The curved display apparatus includes a display panel, and a fixation member which fixes the display panel so that the display panel is curved with multiple curvatures.
    Type: Application
    Filed: May 17, 2013
    Publication date: December 5, 2013
    Applicants: Samsung Display Co., Ltd., Samsung Electronics Co., Ltd.
    Inventors: Jun-seok AN, Dong-wook KIM, Sung-hwan KIM, Jee-su PARK, Chan-hong PARK, Byung-kook SIM, Jong-cheol LEE, Cheol-se LEE, Hyeong-sik CHOI, Byung-wook AHN, Cheong-hun LEE
  • Patent number: 8514953
    Abstract: Techniques for writing to registers associated with MIMO signal paths are disclosed. In an embodiment, a controller writes a common value to all registers corresponding to the same operational parameter or parameters, for all signal paths in the MIMO transmitter or receiver. The controller then updates the register in any signal path whose operational paramater differs from the common value, by accumulating a value to the value already in the register, or by replacing the value already in the register with a different value.
    Type: Grant
    Filed: November 6, 2007
    Date of Patent: August 20, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Hee Choul Lee, Chan Hong Park
  • Publication number: 20120187994
    Abstract: System for I-Q phase mismatch detection and correction. An apparatus to correct a phase mismatch between I and Q signals includes a correction circuit configured to continuously compare a reference signal and a phase error signal associated with the I and Q signals to generate an I bias signal and a Q bias signal, a first CMOS buffer configured to receive the I signal and the I bias signal and output a phase adjusted I signal based on the I bias signal, and a second CMOS buffer configured to receive the Q signal and the Q bias signal and output a phase adjusted Q signal based on the Q bias signal.
    Type: Application
    Filed: January 21, 2011
    Publication date: July 26, 2012
    Applicant: QUALCOMM INCORPORATED
    Inventors: Jeongsik Yang, Chan Hong Park, Sang-oh Lee
  • Patent number: 8204154
    Abstract: A mobile communication device comprises a plurality of receivers, a phase detection circuit, and a DC offset calibration circuit. Each receiver comprises a receiver chain and a divide-by-2 circuit that supplies Local Oscillating (LO) signal for the receiver chain. The LO signals leak to each receiver chain and create an undesirable DC offset voltage. The DC offset depends on an LNA gain and a phase relation among the LO leakages. In a first novel aspect, a two-dimensional DC offset calibration (DCOC) table is prepared for each receiver chain. In a second novel aspect, the phase detection circuit detects the phase relation among the LO leakages for each receiver chain. Based on the LNA gain and the detected phase relation of each receiver chain, a DCOC code is selected from a corresponding DCOC table such that the calibration circuit calibrates the DC offset for each receiver effectively and efficiently.
    Type: Grant
    Filed: May 19, 2010
    Date of Patent: June 19, 2012
    Assignee: Qualcomm Incorporated
    Inventors: ByungWook Min, Chan Hong Park