Patents by Inventor Se-Ki Park

Se-Ki 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: 8587744
    Abstract: A liquid crystal display and a fabricating method thereof are provided. The liquid crystal display includes a light guide plate (LGP) guiding light, a light source that is disposed at one side of the LGP, a bottom receiving container including a bottom plate disposed below the LGP and the light source and a cover that covers the light source and is integrally formed with the bottom surface, a reflective sheet member laminated inside the cover facing the light source, a reflective sheet positioned on the bottom plate, a liquid crystal panel receiving the light from the light source and displaying an image, and a top receiving container including a top plate having a window to expose the liquid crystal panel outside, and a first sidewall portion extending along the boundary of the top plate.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: November 19, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jin-Soo Shin, Tae-Hyung Kim, Jun-Hee Son, Sung-Wook Kang, Gennady Ivanov, Se-Ki Park
  • Patent number: 8567998
    Abstract: A lens for a light emitting diode is formed with a material having a refractive index of n, and the lens includes a base, a first curved circumferential surface extending from the base, a curved center-edge surface extending from the first curved circumferential surface, and a curved centermost surface extending from the curved center-edge surface. The base includes a groove for receiving a light emitting chip therein. In the lens, a distance from a center of the base to a point of the curved center-edge surface is always shorter than the radius of curvature for the point of the curved center-edge surface. The curved centermost surface has a concave shape with respect to the base.
    Type: Grant
    Filed: June 14, 2011
    Date of Patent: October 29, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ju-Young Yoon, Gi-Cherl Kim, Jong-Seo Lee, Chun-Ho Song, Se-Ki Park, Sang-Gil Lee, Seock-Hwan Kang
  • Publication number: 20130272022
    Abstract: In a backlight assembly and a display apparatus having the backlight assembly, the backlight assembly includes a light source, a light guide, a first reflector, and an optical unit. The light guide is disposed adjacent to the light source, extends substantially parallel with a longitudinal direction of the light source, and refracts light emitted from the light source. The first reflector is disposed under the light guide and reflects the refracted light toward the optical unit. The optical unit is disposed over the first reflector such that an empty space is formed between the optical unit and the first reflector.
    Type: Application
    Filed: August 23, 2012
    Publication date: October 17, 2013
    Applicant: Samsung Display Co., Ltd.
    Inventors: Chul-Hyun CHOI, Kwang-Hoon LEE, Se-Ki PARK
  • Publication number: 20130250210
    Abstract: A backlight assembly and a liquid crystal display having the same are provided. The backlight assembly includes a plurality of LED packages mounted on a substrate, and a lens unit that seals the LED packages. The lens unit includes a plurality of convex lenses arranged to partially overlap with each other or arranged proximate to each other. Light emitted from LED units in the LED packages is diffused by the interface between the lens unit and another material, such as air, to provide light incident on a light guide plate.
    Type: Application
    Filed: May 16, 2013
    Publication date: September 26, 2013
    Applicant: Samsung Display Co., Ltd.
    Inventors: Se Ki PARK, Gi Cherl Kim
  • Publication number: 20130242541
    Abstract: Disclosed is a display device that can uniformly transmit light emitted from a light source to the entire display panel without using a light guide plate. The display device includes a display panel, a backlight assembly supplying light to the display panel, and a lower cover receiving the backlight assembly. The backlight assembly includes a light source, a circuit board mounted with the light source, and a reflection cover coupled to the circuit board to reflect light emitted from the light source and formed of a bendable plate type member.
    Type: Application
    Filed: March 4, 2013
    Publication date: September 19, 2013
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kyung-Min KIM, Sung-Kyu SHIM, Yong-Hoon KWON, Do Hun KIM, Dong Hyeon LEE, Seung Hwan CHUNG, Seung-Hwa HA, Se Ki PARK, Seong-Yong HWANG, You Ra KIM
  • Patent number: 8444296
    Abstract: A backlight assembly and a liquid crystal display having the same are provided. The backlight assembly includes a plurality of LED packages mounted on a substrate, and a lens unit that seals the LED packages. The lens unit includes a plurality of convex lenses arranged to partially overlap with each other or arranged proximate to each other. Light emitted from LED units in the LED packages is diffused by the interface between the lens unit and another material, such as air, to provide light incident on a light guide plate.
    Type: Grant
    Filed: March 7, 2007
    Date of Patent: May 21, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Se Ki Park, Gi Cherl Kim
  • Patent number: 8421947
    Abstract: A liquid crystal display (“LCD”) module includes a liquid crystal panel, a mold frame provided below the liquid crystal panel and supporting the liquid crystal panel, a light guide plate provided below the mold frame, and a light source assembly coupled to an outside of the mold frame to accommodate the light guide plate therein, the light source assembly partially inserted into the mold frame, and supplying light to the light guide plate.
    Type: Grant
    Filed: October 7, 2009
    Date of Patent: April 16, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joo-Woan Cho, Se-Ki Park, Seong-SIK Choi
  • Patent number: 8395325
    Abstract: A method of driving a light source, a light source apparatus for performing the method, and a display apparatus having the light source apparatus are disclosed in accordance with one or more embodiments. In the method, a plurality of light source strings connected in parallel is driven by applying a driving voltage to a first terminal of the light source strings. A peak current due to a voltage deviation of each of the light source strings is switch-controlled to uniform an average current of the light source strings. Thus, a peak current flowing through light source strings in accordance with a voltage deviation of the light source strings is switch-controlled, so that an average current of the light source strings may be uniformly maintained. Therefore, a voltage deviation is not consumed as power, so that damage to circuit elements due to heat may be prevented.
    Type: Grant
    Filed: September 9, 2009
    Date of Patent: March 12, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Byoung-Dae Ye, Gi-Cherl Kim, Byung-Choon Yang, Se-Ki Park, Sang-Chul Byun
  • Patent number: 8378959
    Abstract: A light source panel according to an embodiment includes a plurality of light-emitting parts having a plurality of light-emitting substances to be divided into a predetermined number of partial areas. A light source driving part provides each of the light-emitting substances with a current. An adaptive dimming control part receives an image signal from an external device and sets the light-emitting parts into a first dimming block corresponding to a first color class of the first image signal or a second dimming block corresponding to a second color class of the first image signal to control the backlight assembly, in order to prevent color artifacts from being generated at a boundary area between the first dimming block and the second dimming block, the adaptive dimming control part controlling the backlight assembly, so that the first dimming block performs a second dimming operation.
    Type: Grant
    Filed: July 8, 2009
    Date of Patent: February 19, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dong-Min Yeo, Gi-Cherl Kim, Se-Ki Park, Byoung-Dae Ye
  • Patent number: 8368846
    Abstract: A two-dimensional light source includes a base substrate having holes, wires disposed on a lower surface of the base substrate, a light emitting diode (LED) chip disposed on an upper surface of the base substrate, plugs that connect two electrodes of the LED chip to the wires through the holes, a buffer layer covering the LED chip, and an optical layer that is disposed on the buffer layer and has an optical pattern formed at a portion of the optical layer corresponding to the LED chip.
    Type: Grant
    Filed: March 21, 2011
    Date of Patent: February 5, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Gi-Cherl Kim, Se-Ki Park, Ju-Young Yoon, Byung-Choon Yang, Seok-Hyun Nam, Sang-Yu Lee
  • Patent number: 8358293
    Abstract: A display apparatus includes light source blocks driven as follows in displaying at least one frame (possibly every frame). An image to be displayed includes image pixels. Each light source block corresponds to an image pixels block which is a block of image pixels to be displayed directly opposite to the light source block. For each image pixels block, a block mean value and a block maximum value are determined. A parameter is determined which corresponds to a total luminance of the frame. For each image pixels block, a block representative value is determined which corresponds to the parameter, the block representative value being within a range between the block mean value and the block maximum value inclusive. During the frame, each light source block is driven to provide a luminance which is an increasing function of the corresponding block representative value.
    Type: Grant
    Filed: March 20, 2009
    Date of Patent: January 22, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Young-Jun Seo, Dong-Min Yeo, Gi-Cherl Kim, Se-Ki Park, Hoi-Sik Moon
  • Patent number: 8334948
    Abstract: A backlight assembly includes; a plurality of light guide blocks disposed substantially in parallel with each other along a first direction, each of the plurality of light guide blocks including; a light guide plate (“LGP”) having a wedge-shape decreasing in thickness from a first side thereof to a second side thereof, and a light source unit disposed facing a side surface of the LGP, and a light source driving unit which individually controls the light source units of the plurality of light guide blocks to emit light via a local dimming method.
    Type: Grant
    Filed: April 23, 2012
    Date of Patent: December 18, 2012
    Assignee: Samsung Display Co., Ltd.
    Inventors: Heu-Gon Kim, In-Sun Hwang, Taek-Sun Shin, Byung-Seo Yoon, Yong-Woo Lee, Se-Ki Park
  • Patent number: 8294660
    Abstract: A backlight unit and a display device having a backlight unit are disclosed. The backlight unit includes an LED substrate,. The LED substrate includes a plurality of emission regions. An LED is provided in each emission region. An LED driver drives the LED. An LED controller supplies a dimming control signal to the LED driver. The LED controller is provided on a driving board. A first connection unit is provided in the LED substrate. A second connection unit is provided in the driving board. The second connection unit is capable of coupling with the first connection unit.
    Type: Grant
    Filed: July 30, 2008
    Date of Patent: October 23, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Eui-Jeong Kang, Gi-Cherl Kim, Byung-Choon Yang, Se-Ki Park, Byoung-Dae Ye
  • Patent number: 8289267
    Abstract: A backlight assembly includes a main circuit board having a light-generating part, a control circuit board which provides a control signal for controlling the light-generating part, and a sub-circuit board which is electrically connected to the control circuit board and receives the control signal, the sub-circuit board including a buffer which generates an amplified control signal in response to the control signal, and where the sub-circuit board is electrically connected to the main circuit board and provides the amplified control signal. The control circuit board and the main circuit board are electrically connected by the sub-circuit board, and the sub-circuit board amplifies the control signal received from the control circuit board and provides the control signal to the main circuit board.
    Type: Grant
    Filed: April 7, 2009
    Date of Patent: October 16, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sang-Il Park, Gi-Cherl Kim, Se-Ki Park, Si-Joon Song, Moon-Hwan Chang
  • Patent number: 8277067
    Abstract: In accordance with one or more embodiments of the present invention, a light source module includes a light source, a frame plate, and an insulation structure. The frame plate includes a plurality of light source pad portions, a power wiring portion, and a peripheral portion. The power wiring portion is electrically connected to the light source to be formed in the vicinity of the light source pad portion. A boundary area of the power wiring portion corresponding to the peripheral portion and the light source pad portion is formed to be open, so that the power wiring portion is spaced apart from the peripheral portion and the light source pad portion. The insulation structure is formed in the boundary area to electrically insulate the power wiring portion from the frame plate. In one aspect, the volume, weight, and manufacturing costs of the light source module may be reduced, and a process of individually packaging light sources may be considered unnecessary.
    Type: Grant
    Filed: September 1, 2009
    Date of Patent: October 2, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Se-Ki Park, Gi-Cherl Kim, Young-Keun Lee
  • Patent number: 8267568
    Abstract: A display device includes a light source assembly, a light guide plate (LGP), a lower receiving container, a reinforcing member, a display panel and an upper receiving container. The lower receiving container includes a first coupling portion formed on the first bottom surface. The reinforcing member includes a pressing down part structured to pressing down on an upper surface adjacent to a corner portion of the LGP and a fixing part integrally extending from an end portion of the pressing down part in parallel with a first sidewall of the lower receiving container to have a second coupling portion being coupled with the first coupling portion. The reinforcing member covers the light source assembly. The display panel is disposed on the LGP and the reinforcing member. The upper receiving container includes a third coupling portion coupled to the first coupling portion and the second coupling portion through a coupling member.
    Type: Grant
    Filed: January 19, 2010
    Date of Patent: September 18, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joo-Woan Cho, Yong-Woo Lee, Se-Ki Park
  • Publication number: 20120206670
    Abstract: A backlight assembly includes; a plurality of light guide blocks disposed substantially in parallel with each other along a first direction, each of the plurality of light guide blocks including; a light guide plate (“LGP”) having a wedge-shape decreasing in thickness from a first side thereof to a second side thereof, and a light source unit disposed facing a side surface of the LGP, and a light source driving unit which individually controls the light source units of the plurality of light guide blocks to emit light via a local dimming method.
    Type: Application
    Filed: April 23, 2012
    Publication date: August 16, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Heu-Gon KIM, In-Sun HWANG, Taek-Sun SHIN, Byung-Seo YOON, Yong-Woo LEE, Se-Ki PARK
  • Patent number: 8197113
    Abstract: Provided is a display device for an embodiment in which a central axis of a light guide plate (LGP) and a central axis of one or more light sources are matched with each other to maximize efficiency of the light sources, and which has an ultra-slim structure. The display device may include: a display panel which displays an image; an LGP which guides light to the display panel; light sources which are disposed on a side of the LGP and provide light to the LGP; a circuit board which is disposed on a side of the display panel with the light sources mounted on a surface thereof, and driving chips which drive the display panel mounted on an opposite surface thereof; and a frame which houses the LGP and the light sources and on which the circuit board and the display panel are mounted.
    Type: Grant
    Filed: October 26, 2009
    Date of Patent: June 12, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Se-Ki Park, Joo-Woan Cho, Sung-Kyu Shim, Young-Keun Lee
  • Patent number: 8199280
    Abstract: A backlight assembly includes; a plurality of light guide blocks disposed substantially in parallel with each other along a first direction, each of the plurality of light guide blocks including; a light guide plate (“LGP”) having a wedge-shape decreasing in thickness from a first side thereof to a second side thereof, and a light source unit disposed facing a side surface of the LGP, and a light source driving unit which individually controls the light source units of the plurality of light guide blocks to emit light via a local dimming method.
    Type: Grant
    Filed: May 21, 2009
    Date of Patent: June 12, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Heu-Gon Kim, In-Sun Hwang, Taek-Sun Shin, Byung-Seo Yoon, Yong-Woo Lee, Se-Ki Park
  • Patent number: 8183786
    Abstract: A liquid crystal display (“LCD”) includes; a liquid crystal panel which displays an image, and a plurality of light-emitting blocks which provide light to the liquid crystal panel, wherein each of the light-emitting blocks includes a first string having a plurality of first light-emitting elements connected in series and a second string having a plurality of second light-emitting elements connected in series, and an amount of light emitted by each of the first light-emitting elements is different from an amount of light emitted by each of the second light-emitting elements.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: May 22, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Se-Ki Park, Byoung-Dae Ye, Gi-Cheri Kim, Dong-Min Yeo