Patents by Inventor Jang-Doo Lee

Jang-Doo Lee 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: 20160140905
    Abstract: A display device includes: a display panel including a plurality of pixels; and a controller configured to adjust a data signal applied to each of the plurality of pixels, and the plurality of pixels includes a plurality of pixel blocks, and the controller is configured to calculate a remaining lifespan of each of the plurality of pixel blocks and to adjust a maximum luminance of pixels between a first pixel block and a second pixel block based on a remaining lifespan of the first pixel block, by selecting the first pixel block and the second pixel block based on the remaining lifespan of each of the pixel blocks.
    Type: Application
    Filed: May 11, 2015
    Publication date: May 19, 2016
    Inventors: Myoung Hwan Yoo, Jang Doo Lee
  • Patent number: 9257069
    Abstract: A controller for a display panel may include a first supply circuit to output first and second driving voltages to a sub-pixel of a first color; and a second supply circuit to output third and fourth driving voltages to a sub-pixel of a second color. The first driving voltage may be greater than the second driving voltage, and the third driving voltage may be greater than the fourth driving voltage. Also, at least three of the first, second, third, and fourth driving voltages may be different from one another.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: February 9, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Leonid Kaplan, Heung-Yeol Na, Ho-Ryun Chung, Wang-Jo Lee, Jang-Doo Lee
  • Publication number: 20160034000
    Abstract: Provided is a display device, including a flexible display panel; and a first roller connected to the display panel and having an outer surface, the first roller winding the flexible display panel on the outer surface, the first roller winding both in a first rotating direction and in a second rotating direction opposite to the first direction.
    Type: Application
    Filed: December 4, 2014
    Publication date: February 4, 2016
    Inventors: Jung Hun LEE, Youn Joon KIM, Cheol Su KIM, Yoon Jee SHIN, Sang Jo LEE, Jang Doo LEE, Ju Suck LEE, Kyung Min CHOI
  • Patent number: 9083964
    Abstract: A stereoscopic image display device includes: a display unit including a plurality of pixels arranged in a matrix format, the pixels including left-eye and right-eye pixels alternately arranged in one direction; a memory including a left-eye image area for storing left-eye image data corresponding to the left-eye pixels and a right-eye image area for storing right-eye image data corresponding to the right-eye pixels; an address comparator for the respectively storing the left-eye and right-eye image data at corresponding addresses of the left-eye and right-eye image areas and making an arrangement of the left-eye and right-eye image areas in the memory in response to a first signal; a data synthesizer for synthesizing a stereoscopic image signal from the data stored in the memory; and a data driver for applying a data signal corresponding to a stereoscopic image signal to the display unit.
    Type: Grant
    Filed: July 3, 2006
    Date of Patent: July 14, 2015
    Assignees: Nexuschips Co., Ltd., Samsung Display Co., Ltd.
    Inventors: Myoung-Seop Song, Jang-Doo Lee, Hyoung-Wook Jang, Hag-Keun Kim, Duck-Myung Lee, Han-Jun Choi, Hyun-Sook Kim, Woo-Jong Lee
  • Patent number: 9076746
    Abstract: A display device includes a power line configured to transmit an electric current. The display device further includes a plurality of pixel electrode units associated with a single pixel of the display device and configured to share the electric current. The display device further includes a common electrode overlapping the plurality of pixel electrode units. The display device further includes a plurality of light-emitting units associated with the single pixel of the display device and disposed between the common electrode and the plurality of pixel electrode units, wherein each light-emitting unit of the plurality of light-emitting units overlaps a pixel electrode unit of the plurality of pixel electrode units.
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: July 7, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Ho-Ryun Chung, Jang-Doo Lee
  • Patent number: 8970458
    Abstract: There is provided an organic light emitting display capable of minimizing noise. A method of driving the organic light emitting display includes setting pixels included in horizontal blocks into a non-emission state, the pixels charging voltages corresponding data signals, the pixels starting to emit light at different times in units of the horizontal blocks, and emitting light from the pixels according to the charging voltages.
    Type: Grant
    Filed: February 1, 2011
    Date of Patent: March 3, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Naoaki Komiya, Jang-Doo Lee
  • Publication number: 20150015467
    Abstract: A display device includes: a unit pixel including subpixels electrically connected to first power voltages and a second power voltage, where the first power voltages include a first first power voltage and a second first power voltage, and where the subpixels include: a first subpixel electrically connected to the first first power voltage and the second power voltage; a second subpixel electrically connected to the second first power voltage and the second power voltage; and a third subpixel electrically connected to the second first power voltage and the second power voltage, where the first power voltage is a voltage having substantially a same level as a voltage, with which the first subpixel emits light at maximum luminance, and the second power voltage is a voltage having substantially a same level as a voltage, with which the second subpixel or the third subpixel emits light at maximum luminance.
    Type: Application
    Filed: December 3, 2013
    Publication date: January 15, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: Leonid KAPLAN, Heung-Yeol NA, Ho-Ryun CHUNG, Wang-Jo LEE, Jang-Doo LEE
  • Publication number: 20140346444
    Abstract: A display device includes a power line configured to transmit an electric current. The display device further includes a plurality of pixel electrode units associated with a single pixel of the display device and configured to share the electric current. The display device further includes a common electrode overlapping the plurality of pixel electrode units. The display device further includes a plurality of light-emitting units associated with the single pixel of the display device and disposed between the common electrode and the plurality of pixel electrode units, wherein each light-emitting unit of the plurality of light-emitting units overlaps a pixel electrode unit of the plurality of pixel electrode units.
    Type: Application
    Filed: August 8, 2013
    Publication date: November 27, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Ho- Ryun Chung, Jang-Doo Lee
  • Publication number: 20140313242
    Abstract: A controller for a display panel may include a first supply circuit to output first and second driving voltages to a sub-pixel of a first color; and a second supply circuit to output third and fourth driving voltages to a sub-pixel of a second color. The first driving voltage may be greater than the second driving voltage, and the third driving voltage may be greater than the fourth driving voltage. Also, at least three of the first, second, third, and fourth driving voltages may be different from one another.
    Type: Application
    Filed: December 17, 2013
    Publication date: October 23, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Leonid KAPLAN, Heung-Yeol NA, Ho-Ryun CHUNG, Wang-Jo LEE, Jang-Doo LEE
  • Publication number: 20130342114
    Abstract: A power unit in an organic light emitting display device is disclosed. The power unit includes a first transistor that turns-on or turns-off in response to a first control signal, the first transistor being coupled between a constant high power voltage and a first output node, a second transistor that turns-on or turns-off in response to a second control signal, the second transistor being coupled between a ground voltage and the first output node, a diode of which an anode electrode is coupled to a variable high power voltage, and a third transistor that turns-on or turns-off in response to a third control signal, the third transistor being coupled between a cathode electrode of the diode and the first output node.
    Type: Application
    Filed: January 2, 2013
    Publication date: December 26, 2013
    Applicant: Samsung Display Co., Ltd.
    Inventors: Seung-Jun Lee, Hak-Ki Choi, Jang-Doo Lee
  • Patent number: 8436529
    Abstract: An organic light emitting display includes: an organic light emitting display panel including a display unit; pixel power source out lead bonding (OLB) pads located on first through fourth external side edges of the display unit to supply a pixel power to the display unit; pixel power source lines coupled to the pixel power source OLB pads to provide the pixel power to the display unit; pixel power supply flexible printed circuit boards bonded to the pixel power source OLB pads; signal OLB pads located on at least one external side edge among the first through fourth external side edges to supply a plurality of driving signals to the display unit; signal lines coupled to the signal OLB pads to provide the driving signals to the display unit; and tape carrier packages mounted with driving ICs and bonded to the signal OLB pads.
    Type: Grant
    Filed: December 10, 2010
    Date of Patent: May 7, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chun-Seok Ko, Jang-Doo Lee
  • Patent number: 8421353
    Abstract: Embodiments may include an OLED display including a substrate, a display unit over the substrate and including a plurality of pixels, a conductive contact layer outside the display unit at a distance from the display unit, and a sealing member facing the display unit and fixed to the substrate by the conductive contact layer. The sealing member may include a plurality of metal layers laminated with an insulating adhesive layer, the insulating adhesive layer being between the metal layers, and a supporting layer neighboring the metal layers with the insulating adhesive layer being between the supporting layer and the metal layers. The plurality of metal layers may be electrically connected to the display unit through the conductive contact layer.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: April 16, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dong-Gyun Ra, Jang-Doo Lee, Chun-Seok Ko
  • Patent number: 8373617
    Abstract: The present invention relates to a stereoscopic image display device including an active barrier for varying a barrier display pattern so as to display various stereoscopic images. In further detail, the stereoscopic image display device includes a display panel, a barrier, a barrier driver, and a controller. A stereoscopic image is displayed on the display panel. The barrier is placed corresponding to the display panel, and includes a plurality of liquid crystal cells arranged in a matrix format. The barrier driver drives the barrier such that the barrier display pattern may be a display pattern corresponding to the image signal by controlling the respective plurality of liquid crystal cells to become selectively transparent or opaque based on the mode information signal.
    Type: Grant
    Filed: November 14, 2005
    Date of Patent: February 12, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Beom-Shik Kim, Jang-Doo Lee, Hyoung-Wook Jang, Hui Nam, Myoung-Seop Song
  • Patent number: 8305370
    Abstract: A display driven by a data signal and a light emission signal may be controlled by a control system including a first through fourth controller. The first controller may select a gamma value in accordance with ambient illumination and output a corresponding gamma compensation signal to control a gradation voltage of input image data. The second controller may compare the ambient illumination with a reference value, generate a selection signal in response thereto, and provide changed image data obtained by changing input image data in accordance with the selection signal as the data signal. The third controller may apply a scaling factor to the input image data generated from extracted features related to the input image data and a scale ratio obtained from the extracted features, and output scaled image data as the data signal. The fourth controller may control a pulse width of the emission control signal.
    Type: Grant
    Filed: February 21, 2008
    Date of Patent: November 6, 2012
    Assignee: Samsung Display Co., Ltd.
    Inventors: June-young Song, Young-jong Park, Jang-doo Lee
  • Patent number: 8279221
    Abstract: A stereoscopic image display device displays a stereoscopic image by generating stereoscopic image data based on 3D graphics data. The stereoscopic image display device includes a display unit for displaying an image, a driver, and a controller. The controller receives a synchronization signal, the 3D graphics data, and a user selection parameter for modifying a stereoscopic effect level, and outputs a control signal based on the synchronization signal and a stereoscopic image data signal, which is generated by combining left eye image data and right eye image data generated through performing matrix operations on the 3D graphics data and the user selection parameter, to the driver. The driver drives the display unit based on the control signal and the stereoscopic image data signal to display the stereoscopic image on the display unit.
    Type: Grant
    Filed: August 4, 2006
    Date of Patent: October 2, 2012
    Assignee: Samsung Display Co., Ltd.
    Inventors: Myoung-Seop Song, Jang-Doo Lee, Hyoung-Wook Jang, Hui Nam, Beom-Shik Kim
  • Patent number: 8274453
    Abstract: Disclosed are an organic electro luminescence display and a driving method of the same. The present invention provides an organic electro luminescence display including a pixel unit for displaying an image to correspond to a scan signal, a light emission control signal and a data line. The image is composed of a plurality of frames. The organic electro luminescence display of the present invention includes a scan driver for supplying the scan signal and the light emission control signal to the pixel unit, a data driver for generating a data signal with a video data to supply the generated data signal to the pixel unit, a control unit for controlling a pulse width of the light emission control signal using a frame data which is the sum of the video data inputted to one frame and controlling one frame time according to the size of the frame data, and a power supply unit for supplying a first power and a second power to the pixel unit.
    Type: Grant
    Filed: October 17, 2007
    Date of Patent: September 25, 2012
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Young-jong Park, Jang-doo Lee
  • Patent number: 8207961
    Abstract: A stereoscopic image display device for displaying a three dimensional (3D) stereoscopic image in real-time by using a 3D graphic contained within a 2D image. The stereoscopic image display device includes a controller, a 3D graphic processor, a driver, and a display unit. The controller receives 3D graphic data and a synchronization signal, and outputs a control signal and the 3D graphic data. The 3D graphic processor generates a plurality of stereoscopic matrices used to generate 3D stereoscopic image data for a plurality of viewing points according to the control signal, and transforms the 3D graphic data into 3D stereoscopic image data using the plurality of stereoscopic matrices. The driver generates a driving signal based on the image data output from the 3D graphic processor and the output control signal. The display unit displays an image corresponding to the image data according to the driving signal.
    Type: Grant
    Filed: July 3, 2006
    Date of Patent: June 26, 2012
    Assignees: Samsung Mobile Display Co., Ltd., Nexuschips Co., Ltd.
    Inventors: Myoung-Seop Song, Jang-Doo Lee, Hyoung-Wook Jang, Hag-Keun Kim, Duck-Myung Lee, Han-Jun Choi, Hyun-Sook Kim, Woo-Jong Lee
  • Patent number: 8174564
    Abstract: A three-dimensional display device includes an image display portion displaying a left eye image and a right eye image; and a parallax barrier facing the image display portion and directing the left eye image and the right eye image displayed by the image display portion towards a left eye and a right eye of a user, respectively. The parallax barrier may be formed with a liquid crystal display of a normally black mode of transmission.
    Type: Grant
    Filed: November 27, 2006
    Date of Patent: May 8, 2012
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Beom-Shik Kim, Jang-Doo Lee, Hyoung-Wook Jang, Hui Nam, Myoung-Seop Song, Ja-Seung Ku, Hyo-Jin Lee
  • Patent number: 8154543
    Abstract: A stereoscopic image display device includes a display panel including a plurality of left eye pixels and a plurality of right eye pixels, a memory including a left eye image section for storing data corresponding to the left eye pixels and a right eye image section for storing data corresponding to the right eye pixels, a geometric engine for converting an input 3D image data into left eye 3D image data corresponding to the left eye pixels or right eye 3D image data corresponding to the right eye pixels, and a rendering engine for calculating a coordinate value and a color information value to be stored in the left eye section or the right eye section by using coordinate and color information of the left eye 3D image data or the right eye 3D image data, and for storing the color information value in the memory based on the coordinate value.
    Type: Grant
    Filed: July 3, 2006
    Date of Patent: April 10, 2012
    Assignees: Samsung Mobile Display Co., Ltd., Nexuschips Co., Ltd.
    Inventors: Myoung-Seop Song, Jang-Doo Lee, Hyoung-Wook Jang, Woo-Jong Lee, Hyun-Sook Kim, Hag-Keun Kim, Duck-Myung Lee, Han-Jun Choi
  • Publication number: 20120044221
    Abstract: An organic light emitting display includes: an organic light emitting display panel including a display unit; pixel power source out lead bonding (OLB) pads located on first through fourth external side edges of the display unit to supply a pixel power to the display unit; pixel power source lines coupled to the pixel power source OLB pads to provide the pixel power to the display unit; pixel power supply flexible printed circuit boards bonded to the pixel power source OLB pads; signal OLB pads located on at least one external side edge among the first through fourth external side edges to supply a plurality of driving signals to the display unit; signal lines coupled to the signal OLB pads to provide the driving signals to the display unit; and tape carrier packages mounted with driving ICs and bonded to the signal OLB pads.
    Type: Application
    Filed: December 10, 2010
    Publication date: February 23, 2012
    Inventors: Chun-Seok Ko, Jang-Doo Lee