Patents by Inventor Yong-Hoon Kwon

Yong-Hoon Kwon 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: 9311893
    Abstract: A display device includes a display panel which displays an image corresponding to input image data and is divided into a display blocks, a light source module which includes a light source blocks respectively corresponding to the display blocks, each of the light source blocks including a first light source which emits light of a first color, and a second light source which emits light of a combination of second and third colors, a dimming controller which outputs a dimming signal, a light source module driver which drives each of the light source blocks based on the dimming signal, where the dimming controller detects block image data corresponding to each of the display blocks from the image data, calculates color data based on the block image data, and provides a first dimming signal and a second dimming signal to the light source module driver.
    Type: Grant
    Filed: June 17, 2014
    Date of Patent: April 12, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Yong Hoon Kwon, Hee Kwang Song, Ho Sik Shin, Jung Hyun Kim, Seok Hyun Nam
  • Publication number: 20160078819
    Abstract: A liquid crystal display panel comprises a backlight unit including an optical assembly and configured to differentiate the liquid crystal display panel into a plurality of blocks and to illuminate light to each of the plurality of blocks; a location sensor configured to sense a location of a user watching the liquid crystal display panel; a backlight controller configured to output a dimming value corresponding to a brightness of each of the plurality of blocks according to a result of sensing by the location sensor; and a backlight driver configured to generate a driving current corresponding to the dimming value of each block and to provide the generated driving current to the backlight unit corresponding to each of the plurality of blocks.
    Type: Application
    Filed: June 9, 2015
    Publication date: March 17, 2016
    Inventors: Se-Ki PARK, Yong-Hoon KWON, Bong-Hyun YOU, Joon-Chul GOH
  • Patent number: 9252429
    Abstract: Provided are an electrode additive coated with a coating material made of electrically conductive materials such as metal hydroxides, metal oxides or metal carbonates, and an electrode and a lithium secondary battery comprising the same. The electrode additive in accordance with the present invention can improve high temperature storage characteristics of the battery, without deterioration of performance thereof.
    Type: Grant
    Filed: May 16, 2012
    Date of Patent: February 2, 2016
    Assignee: LG Chem, Ltd.
    Inventors: Hong-Kyu Park, Kwang Hoon Kim, Sun kyu Kim, Seung Il Yoo, Jae-Up Jang, Yong Hoon Kwon, Kyungmin Chun
  • Publication number: 20150268409
    Abstract: A display apparatus with at least two light guide plates, each including a light incident surface and a light exiting surface, the light guide plates being spaced apart from each other so as to form a gap therebetween. The display apparatus also has a light source disposed adjacent to at least one side portion of the light guide plates to emit light to the light incident surface, a display panel positioned to receive light from the light exiting surfaces to facilitate display of an image, and a diffusion member. The diffusion member covers the gap, so as to diffuse light directed toward the display panel.
    Type: Application
    Filed: June 4, 2015
    Publication date: September 24, 2015
    Inventors: Eui Jeong KANG, Dongmin YEO, Taeho LEE, Yong-Hoon KWON, Min-Young SONG, Seung Hwan BAEK
  • Publication number: 20150269894
    Abstract: A display device includes a display panel configured to display an image corresponding to image data input thereto and be divided into a plurality of display blocks, a backlight unit configured to supply light to the display panel and including a light guide panel and a main light source module which supplies light to the light guide panel, and a luminance boosting unit configured to supply boosted light to the plurality of display blocks based on the image data and including a plurality of light source modules arranged to correspond to the plurality of display blocks, respectively.
    Type: Application
    Filed: July 25, 2014
    Publication date: September 24, 2015
    Inventors: Ho Sik SHIN, Eui Jeong KANG, Yong Hoon KWON, Jung Hyun KIM, Hee Kwang SONG
  • Patent number: 9117388
    Abstract: An approach is provided for a light source module and a display device including the same. The light source module includes two first light source packages configured to emit light of a first color, one or more second light source packages disposed between the two first light source packages, and a plurality of third light source packages disposed between the two first light source packages and alternately arranged with the one or more second light source packages. The one or more second light source packages are configured to emit light of the first color and the plurality of third light source packages are configured to emit light of a second color. An intensity of light emitted from each of the one or more second light source packages is approximately twice an intensity of light emitted from each of the two first light source packages.
    Type: Grant
    Filed: July 2, 2012
    Date of Patent: August 25, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Han Moe Cha, Yong-Hoon Kwon, Jung Kyun Kim, Ju Young Yoon
  • Patent number: 9099049
    Abstract: A plurality of gray-scale values is extracted from image signals corresponding to a dimming area to calculate a mean value of the gray-scale values, and at least one of a variance, a standard deviation, a kurtosis, a skewness, a central moment, and an image moment is calculated using the mean value. Then, a representative gray-scale value corresponding to the dimming area is determined using the calculated values, and a dimming function for the light sources included in the dimming area is determined based on the representative gray-scale value. Then, the light sources included in the dimming area are driven based on the dimming function.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: August 4, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Tae Kwon Jung, Dongmin Yeo, Byungchoon Yang, Yong-Hoon Kwon
  • Publication number: 20150206507
    Abstract: A display device includes a display panel which displays an image corresponding to input image data and is divided into a display blocks, a light source module which includes a light source blocks respectively corresponding to the display blocks, each of the light source blocks including a first light source which emits light of a first color, and a second light source which emits light of a combination of second and third colors, a dimming controller which outputs a dimming signal, a light source module driver which drives each of the light source blocks based on the dimming signal, where the dimming controller detects block image data corresponding to each of the display blocks from the image data, calculates color data based on the block image data, and provides a first dimming signal and a second dimming signal to the light source module driver.
    Type: Application
    Filed: June 17, 2014
    Publication date: July 23, 2015
    Inventors: Yong Hoon KWON, Hee Kwang SONG, Ho Sik SHIN, Jung Hyun KIM, Seok Hyun NAM
  • Patent number: 9075181
    Abstract: A display apparatus with at least two light guide plates, each including a light incident surface and a light exiting surface, the light guide plates being spaced apart from each other so as to form a gap therebetween. The display apparatus also has a light source disposed adjacent to at least one side portion of the light guide plates to emit light to the light incident surface, a display panel positioned to receive light from the light exiting surfaces to facilitate display of an image, and a diffusion member. The diffusion member covers the gap, so as to diffuse light directed toward the display panel.
    Type: Grant
    Filed: June 3, 2013
    Date of Patent: July 7, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD
    Inventors: Eui Jeong Kang, Dongmin Yeo, Taeho Lee, Yong-Hoon Kwon, Min-Young Song, Seung Hwan Baek
  • Patent number: 9052419
    Abstract: A display apparatus includes a light guide plate, a light source unit and a display panel. The light guide plate includes an incident surface, an exit surface and an opposite surface opposite to the exit surface and guides a light incident into the incident surface toward the exit surface. The light source unit includes a light source which generates light and is disposed adjacent to the incident and has an emitting surface inclined with respect to the incident surface. An extension line of a normal line of the emitting surface passes through the opposite surface, and the light is incident into the incident surface while being inclined toward the opposite surface. The display panel displays an image by receiving the light emitted from the exit surface.
    Type: Grant
    Filed: October 22, 2013
    Date of Patent: June 9, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Eui Jeong Kang, Juhwa Ha, Hyeeun Park, Cheolyong Noh, Seung Hwan Baek, Yong-Hoon Kwon
  • Patent number: 9041745
    Abstract: There is provided a method of boosting a local dimming signal. In the method, it is determined whether or not local dimming signals, which are applied for individually driving light source blocks per frame, satisfy boosting conditions. Then, a predetermined local dimming signal corresponding to at least one of the light source blocks is boosted to a reference luminance value when the local dimming signals continuously satisfy the boosting conditions, and the boosting luminance of the predetermined local dimming signal at the reference luminance value is gradually decreased after a light adaptation time of an observer's eye. When the luminance of light source blocks that are boosted is gradually decreased before the light adaptation time or luminance of light source blocks that will be boosted is gradually increased to the light adaptation time, power consumption required to boost the light source blocks may be decreased.
    Type: Grant
    Filed: May 29, 2009
    Date of Patent: May 26, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Se-Ki Park, Joon-Hak Oh, Gi-Cherl Kim, Gi-Chang Park, Joong-Hyun Kim, Dong-Min Yeo, Nam-Ok Kwon, Yong-Hoon Kwon
  • Patent number: 9035868
    Abstract: A method for driving a light source module, the light source module including a plurality of light-emitting blocks, a driving mode of the light-emitting block providing light to a plurality of pixels displaying a unit image is determined by analyzing grayscale values corresponding to the pixels. A second driving signal is applied to the light-emitting block determined to be in a boosting mode, the second driving signal having a level higher than the level of a first driving signal applied to the light-emitting block determined to be in a normal mode.
    Type: Grant
    Filed: April 14, 2010
    Date of Patent: May 19, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dong-Min Yeo, Gi-Cherl Kim, Yong-Hoon Kwon
  • Patent number: 9019461
    Abstract: A liquid crystal display apparatus includes a liquid crystal display panel which displays an image, a light guide plate, a backlight unit including a light source part which generates and supplies light, and a panel temperature adjusting member on a surface of the liquid crystal display panel. The panel temperature adjusting member includes a transparent resistor, and a power supply which supplies power to the transparent resistor. The transparent resistor emits a larger amount of heat to a region of the liquid crystal display panel, which is distant from the light source part, than to a region close to the light source part, such that the liquid crystal display panel has uniform temperature distribution.
    Type: Grant
    Filed: July 11, 2012
    Date of Patent: April 28, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yong-Hoon Kwon, Byoung Dae Ye, JoongHyun Kim, Hyeeun Park, SungKu Baek, Young-Jun Seo
  • Publication number: 20150069425
    Abstract: A light-emitting device module includes a substrate and a light-emitting device disposed on the substrate. The light-emitting device may have a first pad and a second pad disposed thereon. A coating layer may cover the light-emitting device. The coating layer has a first via hole and a second via hole configured to respectively expose the first pad and the second pad therethrough. Wirings configured to be electrically connected to the first pad and the second pad through the first via hole and the second via hole are disposed on the coating layer.
    Type: Application
    Filed: February 25, 2014
    Publication date: March 12, 2015
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dong-Hwan Kim, Yong-Hoon Kwon, Hyuk-Hwan Kim, Seok-Hyun Nam
  • Patent number: 8896618
    Abstract: A liquid crystal display device and a method of driving the same are provided for one or more embodiments. The liquid crystal display device includes: a liquid crystal panel including a plurality of display blocks and displaying an image in response to image signals; a plurality of light-emitting blocks emitting light to the liquid crystal panel and corresponding to the plurality of display blocks; a first look-up table including a normalized value obtained by normalizing an initial duty ratio corresponding to the brightness of the image to a maximum duty ratio corresponding to the maximum brightness of the image; and a timing controller receiving the normalized value corresponding to each of the light-emitting blocks from the first look-up table and using the normalized value to provide an optical data signal corresponding to each of the light-emitting blocks.
    Type: Grant
    Filed: July 10, 2009
    Date of Patent: November 25, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yong-Hoon Kwon, Gi-Cherl Kim, Se-Ki Park, Moon-Hwan Chang, Dong-Min Yeo, Ho-Sik Shin
  • Patent number: 8803430
    Abstract: A light source module includes a LED array, a switch and a control part. The LED array includes a plurality of LED rows and a bridge light emitting part connecting the LED rows with each other. Each of the LED rows has a first direction light emitting part and a second direction light emitting part which are alternately disposed with each other. The switch adjusts an intensity of a current applied to the LED array. The control part determines an output status of the LED array and provides a control signal to the switch.
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: August 12, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Byoung-Dae Ye, Yong-Hoon Kwon, Hyung-Jin Kim
  • Patent number: 8730148
    Abstract: A method of driving a light source of a light source module including a red light source, a green light source and a blue light source, includes sensing a luminous intensity of the environment; and adjusting a wavelength of light generated from the light source module according to the luminous intensity of the environment.
    Type: Grant
    Filed: May 14, 2009
    Date of Patent: May 20, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Young-Min Park, Gi-Cherl Kim, Se-Ki Park, Si-Joon Song, Young-Keun Lee, Yong-Hoon Kwon
  • Publication number: 20140132650
    Abstract: A method of driving a light source includes: determining a ratio of a first display area with respect to an entire display area by analyzing an image data, where the first display area displays a maximum luminance image; generating a duty ratio control signal which controls a duty ratio of a driving signal based on the ratio of the first display area, where the driving signal drives a light source in a first light emitting area of a light source module, and the first light emitting area corresponds to the first display area; and outputting the driving signal to the light source module based on the duty ratio control signal.
    Type: Application
    Filed: March 15, 2013
    Publication date: May 15, 2014
    Applicant: Samsung Display Co., LTD.
    Inventors: Ho-Sik SHIN, Yong-Hoon KWON, Jung-Hyun YANG
  • Publication number: 20140133178
    Abstract: A display device includes a backlight unit generating light and a display panel displaying an image using the light from the backlight unit. The backlight unit includes a circuit board, a plurality of light emitting devices, a light guide member including a light incident surface, and a guide member disposed between a surface of the circuit board and the light incident surface. The guide member uniformly maintains a distance between the light incident surface and the light emitting devices. Thus, a light loss is reduced.
    Type: Application
    Filed: May 8, 2013
    Publication date: May 15, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Yong-Hoon Kwon, Min-Young Song, Byoung Dae Ye, Myung-Seok Kwon, Seki Park, Sangwon Lee
  • Patent number: 8723783
    Abstract: A liquid crystal display (LCD) includes: a light source unit to provide light to a liquid crystal panel and includes first point light sources and second point light sources; a first timing controller to transmit a first image signal and a second image signal to the liquid crystal panel; a second timing controller to transmit optical data, which includes first information to turn on the first point light sources and the second point light sources at different times; and a light source driver to control the first point light sources and the second point light sources to be turned on and off according to the optical data. A method of driving an LCD includes turning on and off first and second point light sources according to received first and second image signals.
    Type: Grant
    Filed: December 6, 2010
    Date of Patent: May 13, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dong-Min Yeo, Byung-Choon Yang, Young-Jun Seo, Yong-Hoon Kwon