Patents by Inventor IN HWAN BAEK

IN HWAN BAEK 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: 9835316
    Abstract: A frame and a light source module having the same are provided. According to embodiments, there is provided a frame comprising a plurality of bodies spaced apart from one another in one direction and connected to one another by a supporter. The plurality of bodies comprises a light emission window formed at an upper part of a body, a light incidence window formed at a bottom part of the body, and a mounting portion formed between the light emission window and the light incidence window, and including a groove that is formed on an inner wall of the body and is recessed horizontally into the body from the light incidence window.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: December 5, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seung Hwan Baek, Myeong Ju Shin, Yeong Bae Lee
  • Patent number: 9823405
    Abstract: A display apparatus includes a display panel displaying an image using light; a light source generating first light; a light conversion member converting the first light into the light; a case member accommodating the light source and the light conversion member and including an open part to transmit the light which is converted by the light conversion member; and a light guide plate receiving the light through the open part and guiding the light to a upward direction where the display panel is disposed.
    Type: Grant
    Filed: June 1, 2015
    Date of Patent: November 21, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Donghyeon Lee, Seung Hwan Baek, Luly Lee, Yeongbae Lee
  • Patent number: 9766497
    Abstract: A curved backlight unit includes: a light source module; and a light source enhancing member disposed on the light source module, the light source module includes: a substrate; a light emitting part disposed on the substrate; a first reflecting sheet spaced apart from the light emitting part by a predetermined distance and enclosing the light emitting part; a second reflecting sheet contacting the first reflecting sheet; and a wavelength converting part fixed between the first reflecting sheet and the second reflecting sheet and overlapped with the light emitting part.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: September 19, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seung Hwan Baek, So Jeong La, Chan-Jae Park, Yeong Bae Lee
  • Patent number: 9766767
    Abstract: A method and an apparatus for entering text in a portable terminal are provided. The method includes focusing on a selected text field and displaying a SIP, when the predefined text field is selected from among text fields, scroll-displaying the text fields in a display area in response to a requested scroll, when a user requests the scroll of the display area of the text fields, and identifying, from a result of the scroll display, whether the selected text field is being displayed in the display area, and determining whether text is to be entered into the selected text field.
    Type: Grant
    Filed: April 29, 2013
    Date of Patent: September 19, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Gi-Yong Lee, Sung-Hwan Baek, Do-Hee Chung
  • Patent number: 9753214
    Abstract: A light source unit, a method of fabricating the light source unit and a backlight assembly including the light source unit are provided. According to an exemplary embodiment of the inventive concept, there is provided a light source unit, comprising a circuit board, a light-emitting diode (“LED”) package configured to be disposed on the circuit board and including an LED chip emitting light, a wavelength conversion member configured to be disposed on the LED package and convert the wavelength of light emitted from the LED chip, and a mold member configured to be interposed between the LED package and the wavelength conversion member and support the wavelength conversion member.
    Type: Grant
    Filed: July 1, 2014
    Date of Patent: September 5, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Myeong Ju Shin, Seung Hwan Baek, Yeong Bae Lee
  • Publication number: 20170169256
    Abstract: A smart card may include data storage and transmission circuitry, a plurality of voltage controllers to supply operational power to card circuitry, a plurality of oscillators to supply an internal clock for the card, and power management circuitry. The power management circuitry may be configured to shut down the oscillators and at least one, but not all, voltage controllers during a period after a data transmission is completed.
    Type: Application
    Filed: February 14, 2017
    Publication date: June 15, 2017
    Inventors: Hyuck-Jun CHO, Donald NA, Seung-Hwan BAEK, Jae-Keun OH, Kee-Moon CHUN
  • Patent number: 9671546
    Abstract: Provided are a backlight assembly and a display device having the same. A backlight assembly includes a light source unit which emits light, a light guide plate (LGP) including an incident surface upon which light emitted from the light source unit is incident, an opposite surface which faces the incident surface, and an exit surface which connects the incident surface and the opposite surface and from which light incident upon the incident surface exits, a wavelength conversion member which is located on the exit surface and converts a wavelength of light output from the exit surface, and a first reflective member which is located on the opposite surface and reflects light incident upon the opposite surface, wherein the first reflective member includes a plurality of first color patterns which face the opposite surface.
    Type: Grant
    Filed: June 5, 2014
    Date of Patent: June 6, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seung Hwan Baek, Dong Hoon Kim, Seok Hyun Nam, Chan Jae Park, Dong Hyeon Lee, Yeong Bae Lee
  • Patent number: 9664828
    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: Grant
    Filed: September 8, 2014
    Date of Patent: May 30, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dong Hoon Kim, Seung Hwan Baek, Jin Seo, Myeong-Ju Shin, Seung Hwan Chung, Young Jun Choi
  • Patent number: 9658475
    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: Grant
    Filed: July 1, 2014
    Date of Patent: May 23, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dong Hoon Kim, Dong Hyeon Lee, Seung Hwan Baek, Ju Young Yoon, Han Moe Cha, Young Jun Choi
  • Patent number: 9628034
    Abstract: An operational amplifying circuit are provided. The operational amplifying circuit includes a control circuit, pull-up and pull-down transistors, first and second bias circuits, and a bias voltage generating circuit. The control circuit includes first and second input terminals, and is configured to change, when an input voltage transitions to a first level, a voltage level of a pull-up node and a pull-down node to a second level different from the first level. The pull-up transistor provides a power supply voltage to the output terminal. The pull-down transistor connects the output terminal to a ground voltage. The first bias circuit provides a first bias current to the control circuit. The bias voltage generating circuit generates a bias voltage when the voltage level of at least one of the pull-up and pull-down nodes reaches a threshold voltage level, and the second bias circuit provides a second bias current to the control circuit.
    Type: Grant
    Filed: July 14, 2015
    Date of Patent: April 18, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ji-Yong Jeong, Jin-Soo Kim, Seung-Hwan Baek, Ha-Joon Shin
  • Publication number: 20170102586
    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: December 20, 2016
    Publication date: April 13, 2017
    Inventors: DONG HOON KIM, DONG HYEON LEE, SEUNG HWAN BAEK, JU YOUNG YOON, HAN MOE CHA, YOUNG JUN CHOI
  • Patent number: 9594202
    Abstract: A backlight device for use in a display device includes a light source device and a light diffusion member. The light source device includes a plurality of light sources. The light diffusion member includes a light transmission body and reflectors. The light transmission body includes a light receiving surface facing a first one of the light sources for receiving the light emitted from the first light source and a light output surface facing away from the light receiving surface for outputting the light transmitted through the light transmission body. The reflectors are attached to the light transmission body and include first and second reflection surfaces oriented such that the light received from the first light source through the light receiving surface is reflected by the first and second reflection surfaces while the light passes through the light transmission body toward the light output surface.
    Type: Grant
    Filed: July 25, 2014
    Date of Patent: March 14, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chan Jae Park, Seung Hwan Baek, Hwan Jun Sung
  • Patent number: 9589221
    Abstract: A smart card may include data storage and transmission circuitry, a plurality of voltage controllers to supply operational power to card circuitry, a plurality of oscillators to supply an internal clock for the card, and power management circuitry. The power management circuitry may be configured to shut down the oscillators and at least one, but not all, voltage controllers during a period after a data transmission is completed.
    Type: Grant
    Filed: August 6, 2015
    Date of Patent: March 7, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyuck-Jun Cho, Donald Na, Seung-Hwan Baek, Jae-Keun Oh, Kee-Moon Chun
  • Patent number: 9575234
    Abstract: A quantum dot container may include a body having a cavity and a phosphor disposed inside the cavity. The body may include a light transmitting portion and a bent portion connected to one end of the light transmitting portion and extending at a predetermined angle with respect to an extension direction of the light transmitting portion.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: February 21, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jae-Sul An, Dong-Hoon Kim, So-Jeong La, Seung-Hwan Baek
  • Publication number: 20170047001
    Abstract: A source driver integrated circuit (IC) for driving a flat panel display is provided. The source driver IC includes a first control logic circuit configured to generate first output signals for driving first source lines arranged in a first region of the flat panel display and a second control logic circuit configured to generate second output signals for driving second source lines arranged in a second region of the flat panel display. A first output delay between two adjacent output signals among the first output signals is different from a second output delay between two adjacent output signals among the second output signals.
    Type: Application
    Filed: August 12, 2016
    Publication date: February 16, 2017
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ha Joon SHIN, Jin-Soo KIM, Seung Hwan BAEK, Kyung-Gyu PARK, Ji-Yong JEONG
  • Patent number: 9541783
    Abstract: A display device includes a bottom chassis on which a light source is disposed, a light guide plate disposed on the bottom chassis and configured to guide light emitted from the light source to a display panel, an optical sheet on the light guide plate, a mold frame coupled to the bottom chassis and including a support unit on which the display panel is disposed, and a light conversion shielding member disposed on a surface of the support unit of the mold frame having a side portion that extends down from the support unit and covers a side surface of the optical sheet.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: January 10, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seung Hwan Baek, Seul Gi Kim, Yeong Bae Lee, Seok Hyun Nam, Chan Jae Park
  • Patent number: 9519161
    Abstract: A wavelength conversion member, a backlight assembly, and a display device including the same are provided. In one aspect, there is provided a wavelength conversion member comprising a first substrate, a second substrate, a wavelength conversion layer, and a spacer. The second substrate is positioned on the first substrate. The wavelength conversion layer is interposed between the first substrate and the second substrate. The spacer is interposed between the first substrate and the second substrate to constantly keep a distance between the first substrate and the second substrate.
    Type: Grant
    Filed: June 4, 2014
    Date of Patent: December 13, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Yeong Bae Lee, Seok Hyun Nam, Seung Hwan Baek, Sang Won Lee
  • Patent number: 9478261
    Abstract: A semiconductor memory device may include a memory cell array, a plurality of page buffers respectively connected to a plurality of bit lines of the memory cell array, and a control logic configured to control the plurality of page buffers to perform an operation on the memory cell array, wherein each of the plurality of page buffers senses a current amount, which varies according to a potential level of a corresponding bit line among the plurality of bit lines, at a sensing node to read data, and a precharge potential level at the sensing node is adjusted according to a temperature.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: October 25, 2016
    Assignee: SK HYNIX INC.
    Inventors: Sung Yong Lim, Seung Hwan Baek
  • Patent number: 9454850
    Abstract: A method of changing into a screen of an Augmented Reality (AR) service in a mobile communication terminal including a camera is provided. The method of changing into a screen of an AR service in a mobile communication terminal includes displaying a prior screen different from an AR service screen, detecting a predetermined event to change display of the prior screen to the AR service screen, driving the camera if the predetermined event has been detected, capturing an image using the camera, and displaying the AR service screen rendered based on the image captured by the camera.
    Type: Grant
    Filed: June 4, 2013
    Date of Patent: September 27, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ji-Hong Jeung, Gong-Wook Lee, Sung-Hwan Baek, Jun-Ho Lee, Kyu Sung Cho
  • Publication number: 20160254762
    Abstract: A piezoelectric harvesting system using repulsion force, according to one embodiment of the present invention, comprises: a piezoelectric body comprising a piezoelectric material; a fixed portion to at least one surface of which the piezoelectric body is adhered; a support portion for supporting one side of the fixed portion; and a repulsion force-providing portion for providing repulsion force to the fixed portion, so that the piezoelectric body generates electric energy when the fixed portion is deformed due to application of external force and then recovered. According to one embodiment of the present invention, additional shock is applied to the fixed portion to which the piezoelectric body is adhered when recovering after being deformed, thereby increasing the amount of electric energy generated due to the deformation of the piezoelectric body.
    Type: Application
    Filed: August 16, 2013
    Publication date: September 1, 2016
    Applicant: AMC ENERGY CO., LTD.
    Inventors: TAE HYUN SUNG, HYUN JUN JUNG, KI HWAN BAEK, DANIEL SONG, CHAN HO YANG