Patents by Inventor Hwan-Soo Jang

Hwan-Soo Jang 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: 9177502
    Abstract: A scan driver and a display device including the same are provided. The scan driver according to an exemplary embodiment of the present invention generates and transmits at least two different types of scan signals to a display unit including a plurality of pixels, and includes a plurality of sequence drivers each including a plurality of shift registers for generating the different scan signals. In one of the sequence drivers, the scan signal generated in one of the shift registers is transmitted as the input signal of a next one of the shift registers, and the scan signal is concurrently transmitted as an input signal to another one of the shift registers of another one of the sequence drivers of a previous stage or a next stage adjacent to the one of the sequence drivers including the one of the shift registers according to the driving direction of the scan driver.
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: November 3, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hwan-Soo Jang, Jin-Tae Jeong, Ki-Myeong Eom
  • Publication number: 20150294616
    Abstract: An organic light-emitting diode (OLED) display and a method of driving the same are disclosed. In one aspect, the OLED display includes a display panel including a plurality of pixels each including an OLED through which driving current is configured to flow and a scan driver configured to apply a scan signal to the display panel. The display also includes a data driver configured to apply a data signal and a data comparison signal to the display panel, wherein the data comparison signal indicates whether the same data signal is applied to adjacent pixels among the pixels, and a timing controller configured to control the scan driver and the data driver. The display further includes a bridge unit configured to control the OLEDs of the adjacent pixels to share the same driving current with each other based at least in part on the scan signal and the data comparison signal.
    Type: Application
    Filed: December 4, 2014
    Publication date: October 15, 2015
    Inventor: Hwan-Soo Jang
  • Patent number: 9129562
    Abstract: An emission control line driver is capable of securing the stability of an output and of freely controlling the width of emission control signals. The emission control line driver includes a plurality of stages respectively coupled to emission control lines. Each of the stages includes a plurality of transistors that are configured to output the emission control signal. The width of the emission control signal may be controlled to correspond to the width of a start signal. Furthermore, a circuit structure of the stages is simplified.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: September 8, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hwan-Soo Jang, Chang-Soo Pyon
  • Publication number: 20150241501
    Abstract: A display apparatus includes: a display unit including a plurality of pixels connected to a plurality of scan lines and a plurality of data lines; an initialization unit for applying an initialization signal to the plurality of data lines; and a wire test unit for applying a wire test signal to the plurality of data lines through a plurality of fan-out lines respectively connected to one end of each of the plurality of data lines.
    Type: Application
    Filed: February 12, 2015
    Publication date: August 27, 2015
    Inventors: Hwan-Soo Jang, Won-Kyu Kwak, Jin-Tae Jeong
  • Patent number: 9019182
    Abstract: An organic light emitting display includes pixel circuits at crossing regions of scan lines, data lines, first emission control lines, and second emission control lines, a pattern detecting unit for detecting a specific pattern of an image to be displayed, an emission control line driver for supplying a first emission control signal to the first emission control lines, and for supplying a second emission control signal to the second emission control lines, and a timing controller for controlling the emission control line driver so that a supply order of the first and second emission control signals corresponds to whether the specific pattern is detected.
    Type: Grant
    Filed: July 5, 2012
    Date of Patent: April 28, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hwan-Soo Jang, Jin-Tae Jeong
  • Patent number: 9001108
    Abstract: A scan driving device for a display device includes a plurality of scan drive blocks that are sequentially arranged. Each scan drive block includes a first transistor including a gate electrode connected to a first node to which a gate on voltage is transmitted according to a first clock signal, a first electrode connected to a first power source voltage, and a second electrode connected to an output terminal; a second transistor including a gate electrode connected to a second node to which a signal that is input to an input terminal is transmitted according to the first clock signal, a first electrode connected to a second clock signal input terminal, and a second electrode connected to the output terminal; and a third transistor including a gate electrode connected to the first node, a first electrode connected to the input terminal, and a second electrode connected to the second node.
    Type: Grant
    Filed: August 13, 2012
    Date of Patent: April 7, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventor: Hwan-Soo Jang
  • Patent number: 8937585
    Abstract: A pixel capable of displaying an image with uniform brightness, the pixel including an organic light emitting diode, a first transistor to control an amount of current supplied from a first power source coupled to a first electrode to the OLED, a second transistor coupled between a data line and a third node to be turned on when a first scan signal is supplied to a first scan line, a first capacitor coupled between the gate electrode of the first transistor and a second node, a sixth transistor coupled between the second node and the third node to be turned off when an emission control signal is supplied to an emission control line, a second capacitor coupled between the third node and the first power source, a fifth transistor coupled between the first power source and the second node to be turned on when the first scan signal is supplied to the first scan line, and a fourth transistor coupled between a second electrode of the first transistor and the data line to be turned on when a second scan signal is su
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: January 20, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventor: Hwan-Soo Jang
  • Publication number: 20140313138
    Abstract: A display device including: a plurality of first electrodes each corresponding to a plurality of light emitting groups on a plurality of pixels including organic light emitting diodes (OLEDs) and a plurality of second electrodes formed on the plurality of first electrodes, having an insulating layer therebetween, wherein a plurality of touch sensing signals are applied to each of the plurality of first electrodes during a non-light emitting period of each of the plurality of light emitting groups and a touched position is determined in response to a magnitude in voltage between the first and second electrodes by a touch from the outside.
    Type: Application
    Filed: September 27, 2013
    Publication date: October 23, 2014
    Inventors: Jin-Tae Jeong, Hwan-Soo Jang, Jae-Du Noh
  • Publication number: 20140078029
    Abstract: A stage circuit includes an outputting unit having a first node and a second node, the output unit configured to supply a voltage of a first power supply or a voltage of a third input terminal to an output terminal in accordance with voltages applied to the first node and the second node, a first driver configured to control the voltage of the second node in accordance with signals of a first input terminal, a second input terminal, and the third input terminal, and a second driver configured to control the voltage of the first node in accordance with the signal of the second input terminal and the voltage of the second node.
    Type: Application
    Filed: February 20, 2013
    Publication date: March 20, 2014
    Inventor: Hwan-Soo JANG
  • Publication number: 20140078031
    Abstract: A method of driving an organic light emitting display includes dividing one frame into a plurality of subfields, setting a plurality of pixels to include first pixels positioned in odd horizontal lines and second pixels positioned in even horizontal lines, and setting pixels that realize low grayscales in an emission state in one of the plurality of subfields, such that the first pixels have emission states in different subfields than emission states of the second pixels, when the low grayscales are realized.
    Type: Application
    Filed: February 8, 2013
    Publication date: March 20, 2014
    Inventors: Hwan-Soo JANG, Yang-Wan KIM, Jin-Tae JEONG
  • Patent number: 8665182
    Abstract: An emission control driver includes a plurality of stages, each of the plurality of stages including an output terminal coupled to a corresponding one of the emission control lines; input terminals respectively coupled to two or more scan lines of the scan lines for generating a corresponding one of the emission control signals; an input circuit for controlling voltages at a first node and a second node corresponding to scan signals supplied from the two or more scan lines; and an output circuit coupled to the input circuit, the output circuit for controlling the corresponding one of the emission control signals according to the voltages at the first node and the second node.
    Type: Grant
    Filed: October 29, 2009
    Date of Patent: March 4, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventor: Hwan-Soo Jang
  • Publication number: 20140055444
    Abstract: An emission control driver includes stages sequentially outputting emission control signals through emission control lines. Each stage includes a first signal processor receiving a first voltage and generating first and second signals in response to first and second sub-control signals, a second signal processor receiving a second voltage having a level higher than a level of the first voltage and generating third and fourth signals in response to the third sub-control signal, the first signal, and the second signal, and a third signal processor receiving the first and second voltages and generating the emission control signal in response to the third and fourth signals. The first signal processor of each stage receives the emission control signal output from a previous stage as the first sub-control signal, and the first signal processor of a first stage among the stages receives a start signal as the first sub-control signal.
    Type: Application
    Filed: March 1, 2013
    Publication date: February 27, 2014
    Inventor: Hwan Soo JANG
  • Patent number: 8599117
    Abstract: An emission control driver includes a plurality of stages, each of the plurality of stages including a first driver for outputting a first output signal corresponding to one of the first output signal output from a previous stage or a first start pulse; a second driver for outputting a second output signal corresponding to one of the second output signal output from the previous stage or a second start pulse; and a third driver for receiving the first and second output signals and for outputting an emission control signal.
    Type: Grant
    Filed: October 29, 2009
    Date of Patent: December 3, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventor: Hwan-Soo Jang
  • Publication number: 20130207956
    Abstract: A scan driving device for a display device includes a plurality of scan drive blocks that are sequentially arranged. Each scan drive block includes a first transistor including a gate electrode connected to a first node to which a gate on voltage is transmitted according to a first clock signal, a first electrode connected to a first power source voltage, and a second electrode connected to an output terminal; a second transistor including a gate electrode connected to a second node to which a signal that is input to an input terminal is transmitted according to the first clock signal, a first electrode connected to a second clock signal input terminal, and a second electrode connected to the output terminal; and a third transistor including a gate electrode connected to the first node, a first electrode connected to the input terminal, and a second electrode connected to the second node.
    Type: Application
    Filed: August 13, 2012
    Publication date: August 15, 2013
    Inventor: Hwan-Soo JANG
  • Publication number: 20130208032
    Abstract: An organic light emitting display includes pixel circuits at crossing regions of scan lines, data lines, first emission control lines, and second emission control lines, a pattern detecting unit for detecting a specific pattern of an image to be displayed, an emission control line driver for supplying a first emission control signal to the first emission control lines, and for supplying a second emission control signal to the second emission control lines, and a timing controller for controlling the emission control line driver so that a supply order of the first and second emission control signals corresponds to whether the specific pattern is detected.
    Type: Application
    Filed: July 5, 2012
    Publication date: August 15, 2013
    Inventors: Hwan-Soo Jang, Jin-Tae Jeong
  • Publication number: 20120327131
    Abstract: A stage circuit includes an output unit for outputting the voltage of a first or second power source to a first output terminal, corresponding to a voltage at a first or second node; a bidirectional driver for receiving sampling signals of previous and next stages; a first driver coupled to the bidirectional driver to control the voltages at the first and second nodes, corresponding to first and second clock signals; and a second driver coupled to the bidirectional driver to output a sampling signal corresponding to the first and second clock signals. The first driver includes a first transistor coupled between the first power source and the second node; a second transistor coupled between the second node and the second power source; a third transistor coupled between the bidirectional driver and the first node; and a first capacitor coupled between the second node and a second input terminal.
    Type: Application
    Filed: February 23, 2012
    Publication date: December 27, 2012
    Inventor: Hwan-Soo Jang
  • Patent number: 8290115
    Abstract: A driver comprises odd-numbered stages configured to be driven by first and second clock signals and even-numbered stages configured to be driven by the second and third clock signals. Each stage is coupled to a corresponding emission control line, and includes a first driver, a second driver, and a third driver. In a first stage, the first and second drivers receive first and second start pulses and output first and second output signals, respectively. In each stage except the first stage, the first and second driver receives first and second output signals of a previous stage and outputs first and second output signals of each stage, respectively. In each stage, a third driver receives the first and second output signals of each stage and outputs an emission control signal to be transmitted to an emission control line coupled to each stage.
    Type: Grant
    Filed: June 4, 2010
    Date of Patent: October 16, 2012
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dong-Hwi Kim, Hwan-Soo Jang, Seon-I Jeong, Ki-Myeong Eom
  • Publication number: 20120176417
    Abstract: An emission control line driver is capable of securing the stability of an output and of freely controlling the width of emission control signals. The emission control line driver includes a plurality of stages respectively coupled to emission control lines. Each of the stages includes a plurality of transistors that are configured to output the emission control signal. The width of the emission control signal may be controlled to correspond to the width of a start signal. Furthermore, a circuit structure of the stages is simplified.
    Type: Application
    Filed: September 28, 2011
    Publication date: July 12, 2012
    Inventors: Hwan-Soo Jang, Chang-Soo Pyon
  • Publication number: 20120050234
    Abstract: A scan driver and a display device including the same are provided. The scan driver according to an exemplary embodiment of the present invention generates and transmits at least two different types of scan signals to a display unit including a plurality of pixels, and includes a plurality of sequence drivers each including a plurality of shift registers for generating the different scan signals. In one of the sequence drivers, the scan signal generated in one of the shift registers is transmitted as the input signal of a next one of the shift registers, and the scan signal is concurrently transmitted as an input signal to another one of the shift registers of another one of the sequence drivers of a previous stage or a next stage adjacent to the one of the sequence drivers including the one of the shift registers according to the driving direction of the scan driver.
    Type: Application
    Filed: February 25, 2011
    Publication date: March 1, 2012
    Inventors: Hwan-Soo Jang, Jin-Tae Jeong, Ki-Myeong Eom
  • Publication number: 20120026143
    Abstract: A pixel capable of displaying an image with uniform brightness, the pixel including an organic light emitting diode, a first transistor to control an amount of current supplied from a first power source coupled to a first electrode to the OLED, a second transistor coupled between a data line and a third node to be turned on when a first scan signal is supplied to a first scan line, a first capacitor coupled between the gate electrode of the first transistor and a second node, a sixth transistor coupled between the second node and the third node to be turned off when an emission control signal is supplied to an emission control line, a second capacitor coupled between the third node and the first power source, a fifth transistor coupled between the first power source and the second node to be turned on when the first scan signal is supplied to the first scan line, and a fourth transistor coupled between a second electrode of the first transistor and the data line to be turned on when a second scan signal is su
    Type: Application
    Filed: December 29, 2010
    Publication date: February 2, 2012
    Applicant: Samsung Mobile Display Co., Ltd.
    Inventor: Hwan-Soo JANG