Patents by Inventor Hae-Kwan Seo

Hae-Kwan Seo 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).

  • Semiconductor device and display device having the same
    Patent number: 11177331
    Abstract: A semiconductor device includes: a semiconductor chip including a substrate having a first surface and a second surface, which are opposite to each other; a through hole penetrating the substrate; a first conductive pad on the first surface of the substrate; a first bump formed over and electrically connected to the first conductive pad; a second conductive pad on the second surface of the substrate; a second bump formed over and electrically connected to the second conductive pad; and a connection electrode buried in the through hole, the connection electrode electrically connecting the first bump and the second bump.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: November 16, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventor: Hae Kwan Seo
  • Scan driver and display device including the same
    Patent number: 11158265
    Abstract: In a scan driver and a display device including the same, a first input terminal of a stage receives a scan start signal or an output signal of a previous stage when a first control signal is supplied, a second input terminal of the stage receives one of two clock signals, a third input terminal of the stage receives the other of the two clock signals, and a fourth input terminal of the stage receives a scan start signal or an output signal of a next stage when a second control signal is supplied, and a first power source is outputted from an output terminal of the stage when a first clock signal and a second clock signal are low levels.
    Type: Grant
    Filed: December 8, 2020
    Date of Patent: October 26, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hae Kwan Seo, Jae Woo Ryu, Myung Ho Lee
  • Gate driver, display apparatus having the same and method of driving display panel using the same
    Patent number: 11145237
    Abstract: A gate driver includes a plurality of stages, a memory and a selector. The plurality of stages provides a plurality of gate signals to a plurality of gate lines. The memory receives a gate input signal applied to at least one of the stages and outputs the gate input signal as a selection signal. The selector outputs a vertical start signal to a scan start point among the stages based on the selection signal.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: October 12, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hae-Kwan Seo, Myungho Lee
  • SCAN DRIVER AND DISPLAY DEVICE INCLUDING THE SAME
    Publication number: 20210256912
    Abstract: In a scan driver and a display device including the same, a first input terminal of a stage receives a scan start signal or an output signal of a previous stage when a first control signal is supplied, a second input terminal of the stage receives one of two clock signals, a third input terminal of the stage receives the other of the two clock signals, and a fourth input terminal of the stage receives a scan start signal or an output signal of a next stage when a second control signal is supplied, and a first power source is outputted from an output terminal of the stage when a first clock signal and a second clock signal are low levels.
    Type: Application
    Filed: December 8, 2020
    Publication date: August 19, 2021
    Inventors: Hae Kwan SEO, Jae Woo RYU, Myung Ho LEE
  • Display device
    Patent number: 11074846
    Abstract: A display device includes: a display panel including a display area and a pad area having a pad; and a complex circuit package on the pad, including: a first driving signal structure including a first penetration electrode vertically penetrating an inside of the first driving signal structure; a second driving signal structure on the first driving signal structure; and a redistribution wiring structure surrounding the second driving signal structure, and the redistribution wiring structure electrically connecting the first driving signal structure and the second driving signal structure.
    Type: Grant
    Filed: July 1, 2020
    Date of Patent: July 27, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventor: Hae-Kwan Seo
  • DISPLAY DEVICE, METHOD OF RECEIVING IMAGE DATA AND COMMAND DATA, AND METHOD OF TRANSFERRING IMAGE DATA AND COMMAND DATA
    Publication number: 20210201746
    Abstract: A display device includes a display panel including a plurality of pixels, and a panel driver configured to receive input data, and to drive the display panel based on the input data. The panel driver includes a partial still image detector configured to detect a still image data portion in the input data by determining whether at least a portion of the input data represents a still image, and a command decoder configured to extract command data from the input data by decoding the still image data portion in which the command data are encoded.
    Type: Application
    Filed: July 23, 2020
    Publication date: July 1, 2021
    Inventors: Hae-Kwan SEO, Dong-Wook CHOI, Se Ja Chul HWANG
  • Display apparatus and method of driving the same
    Patent number: 11037498
    Abstract: A display apparatus includes a display panel, a power voltage generator, a gate driver and a data driver. The display panel includes first and second display areas, a first back gate signal applying line connected to at least one back gate electrode of at least one of a plurality of pixels in the first display area and a second back gate signal applying line connected to at least one back gate electrode of at least one of a plurality of pixels in the second display area. The power voltage generator is configured to output a first back gate signal to the first back gate signal applying line and a second back gate signal to the second back gate signal applying line. The gate driver is configured to output a gate signal to the display panel. The data driver is configured to output a data voltage to the display panel.
    Type: Grant
    Filed: May 21, 2020
    Date of Patent: June 15, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hae-Kwan Seo, Wontae Kim, Sunghoon Bang, Taehoon Kim
  • Display device
    Patent number: 11011083
    Abstract: A display device includes: a display panel including a first display region, a second display region, and a third display region between the first display region and the second display region; and a display panel driving circuit configured to drive the display panel, wherein the display panel driving circuit drives the first display region, the second display region, and the third display region in a full pixel-row driving manner when an image is displayed on the first display region, the second display region, and the third display region, and wherein the display panel driving circuit drives the first display region in the full pixel-row driving manner and drives the third display region in a partial pixel-row driving manner when the image is displayed only on the first display region and the third display region.
    Type: Grant
    Filed: March 31, 2020
    Date of Patent: May 18, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Wontae Kim, Hae-Kwan Seo
  • SCAN DRIVER AND DISPLAY DEVICE
    Publication number: 20210110774
    Abstract: A scan driver includes: a plurality of stages, each stage including: a logic circuit configured to transfer an input signal to a first node in response to a first clock signal, and to bootstrap the first node in response to a second clock signal; a carry output circuit configured to output the second clock signal as a carry signal that is provided as the input signal for a next stage in response to a voltage of the bootstrapped first node; and a masking controller configured to receive a masking signal and the carry signal, and to output the masking signal as a scan signal provided to a pixel row corresponding to the each stage in response to the carry signal.
    Type: Application
    Filed: May 29, 2020
    Publication date: April 15, 2021
    Inventors: Seong Heon CHO, Hae-Kwan SEO
  • DISPLAY DEVICE AND METHOD OF DRIVING THE SAME
    Publication number: 20210097912
    Abstract: A display device may include a pixel, a driver unit, and a memory. The pixel unit may display a first image in a first mode and may display a second image in a second mode. The driver unit may be electrically connected to the pixel unit, may provide data signals corresponding to the first image to the pixel unit in response to a first mode start signal, may generate first position data including position information of the first image in response to a first mode end signal, and may enable the pixel unit to shift the first image at a predetermined period in the first mode. The memory may be electrically connected to the driver unit and may store the first position data.
    Type: Application
    Filed: July 14, 2020
    Publication date: April 1, 2021
    Inventor: Hae Kwan SEO
  • DISPLAY DEVICE
    Publication number: 20210056879
    Abstract: A display device includes: a display panel including a display area and a pad area having a pad; and a complex circuit package on the pad, including: a first driving signal structure including a first penetration electrode vertically penetrating an inside of the first driving signal structure; a second driving signal structure on the first driving signal structure; and a redistribution wiring structure surrounding the second driving signal structure, and the redistribution wiring structure electrically connecting the first driving signal structure and the second driving signal structure.
    Type: Application
    Filed: July 1, 2020
    Publication date: February 25, 2021
    Inventor: Hae-Kwan SEO
  • DISPLAY DEVICE INCLUDING IMAGE CORRECTOR
    Publication number: 20210035524
    Abstract: A display device includes: a frame data counter configured to calculate frame information of an image displayed in a display area; a speed controller configured to determine a moving speed of the image; and a scenario determiner configured to determine a moving direction and moving amount of the image.
    Type: Application
    Filed: March 26, 2020
    Publication date: February 4, 2021
    Inventors: Byung Ki CHUN, Soon Dong KIM, Hae Kwan SEO, Seung Jae LEE, Jun Gyu LEE, Bong Ju JUN
  • DISPLAY DEVICE AND DRIVING METHOD THEREOF
    Publication number: 20210035488
    Abstract: A display device includes: a pixel unit including a plurality of pixels connected to a plurality of scan lines and a plurality of data lines; a multi-frequency driver configured to compare image data between adjacent frames to determine a first area of the pixel unit driven at a first refresh rate and a second area of the pixel unit driven at a second refresh rate lower than the first refresh rate; a scan driver configured to sequentially supply scan signals to the scan lines in a first direction, to supply first scan signals of the scan signals to the first area at the first refresh rate, and to supply second scan signals of the scan signals to the second area at the second refresh rate; and a data driver configured to supply a data signal corresponding to the image data to the data lines.
    Type: Application
    Filed: April 21, 2020
    Publication date: February 4, 2021
    Inventors: Hae Kwan SEO, Jun Heyung JUNG
  • DISPLAY DEVICE
    Publication number: 20210035489
    Abstract: A display device includes a display including scan lines, data lines, light emission control lines, and pixels connected thereto, a scan driver configured to sequentially provide scan signals to the scan lines, a data driver configured to provide data signals to the data lines, a light emitting driver configured to provide light emission control signals to the light emission control lines based on a light emission clock signal having pulses, and a timing controller configured to provide the light emission clock signal to the light emitting driver, to output the pulses of the light emission clock signal during a frame in a first mode, to mask at least one pulse of the pulses during a first period of the frame in a second mode, and to output at least another pulse of the pulses during a second period after the first period.
    Type: Application
    Filed: March 27, 2020
    Publication date: February 4, 2021
    Inventors: Hae Kwan SEO, Won Tae KIM
  • DISPLAY DEVICE
    Publication number: 20210027697
    Abstract: A display device includes a timing controller configured to generate clock signals, a start signal, and image data. A scan driver includes a plurality of stages configured to sequentially output the clock signals as scan signals in response to the start signal. A data driver configured to generate a data signal based on the image data. A display unit includes pixels configured to emit light with luminance corresponding to the data signal in response to the scan signal. The timing controller is to mask at least one of the clock signals in a first section, a second section, and a third section included in one frame section and spaced from each other.
    Type: Application
    Filed: March 25, 2020
    Publication date: January 28, 2021
    Inventors: Chang Noh YOON, Hae Kwan SEO, Won Tae KIM
  • DISPLAY DEVICE AND DRIVING METHOD THEREOF
    Publication number: 20210027719
    Abstract: A display device and a driving method thereof are provided. The display device includes a display including a pixel including a double gate transistor and a light emitting diode, a power supply for supplying power to the display, a current sensor for sensing a current flowing in the display or in the light emitting diode, and a gate voltage controller for providing a bias voltage signal to one gate electrode of the double gate transistor.
    Type: Application
    Filed: March 12, 2020
    Publication date: January 28, 2021
    Inventors: Seong Heon CHO, Hae Kwan SEO, Seung Jae LEE
  • DISPLAY APPARATUS AND METHOD OF DRIVING THE SAME
    Publication number: 20210027683
    Abstract: A display apparatus includes: a first display area, a second display area, a first back gate signal applying line connected to back gate electrodes of pixels in the first display area and a second back gate signal applying line connected to back gate electrodes of pixels in the second display area; a back gate signal generator configured to generate a first back gate signal applied to the back gate electrodes of the pixels in the first display area and a second back gate signal applied to the back gate electrodes of the pixels in the second display area; a gate driver configured to output a gate signal; a data driver configured to output a data voltage; and a driving controller configured to control a driving timing, wherein the driving controller, the data driver and the back gate signal generator form an integrated driver.
    Type: Application
    Filed: July 1, 2020
    Publication date: January 28, 2021
    Inventor: Hae-Kwan SEO
  • DISPLAY DEVICE
    Publication number: 20210028264
    Abstract: A display device including a display panel and a printed circuit board attached to one end portion of the display panel. The printed circuit board includes a base board, a first driving chip module disposed on the base board, and a second driving chip module spaced apart from the first driving chip module. The first driving chip module includes a timing controller and a data driver, and the second driving chip module includes a plurality of modularized driving chips.
    Type: Application
    Filed: March 9, 2020
    Publication date: January 28, 2021
    Inventors: Hae Kwan SEO, Soon Dong KIM
  • DISPLAY DEVICE AND METHOD OF DRIVING THE SAME
    Publication number: 20210027700
    Abstract: A display device including: a first pixel region including first pixels connected to a data line and first scan lines; a second pixel region in contact with the first pixel region at a first boundary and including second pixels connected to the data line and second scan lines; and a third pixel region in contact with the second pixel region at a second boundary and including third pixels connected to the data line and third scan lines, wherein the display device is configured to scale an image displayed in the second pixel region one or more times based on the second pixel region maintaining a folded state.
    Type: Application
    Filed: July 1, 2020
    Publication date: January 28, 2021
    Inventors: Byung Ki CHUN, Seung Jae LEE, Hae Kwan SEO, Chang Noh YOON, Soon Dong KIM, Ji Hye KIM, Jun Gyu LEE, Jun Heyung JUNG, Young Wook YOO, Kuk Hwan AHN, Hyun Jun LIM
  • DISPLAY DEVICE
    Publication number: 20200409424
    Abstract: A display device includes a substrate and a connector. The substrate includes a display area, a first pad area, and a second pad area. The display area has a plurality of pixels. The first pad area and the second pad area are adjacent respective sides of the display area and are connected to different ones of the pixels. The connector connects the first pad area and the second pad area when the substrate is bent.
    Type: Application
    Filed: September 15, 2020
    Publication date: December 31, 2020
    Applicant: Samsung Display Co., Ltd.
    Inventor: Hae-Kwan SEO