Patents by Inventor Jae-hoon Lee

Jae-hoon 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).

  • Afterimage compensator and display device having the same
    Patent number: 11682362
    Abstract: An afterimage compensator and a display device having the same are disclosed, and the afterimage compensator includes an image analyzer configured to determine an amount of image variation based on a change of image data, and an image shifter configured to adjust a shift interval, which is an interval between time points at which an image is shifted, according to the amount of image variation.
    Type: Grant
    Filed: August 13, 2021
    Date of Patent: June 20, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jae Hoon Lee, Seung Ho Park, Hee Sook Park, Kyoung Ho Lim
  • Image sticking compensation device and display device having the same
    Patent number: 11670212
    Abstract: An image sticking compensation device includes: a deterioration calculator which calculates deterioration data of a current frame based on input image data and sensing frequency information which are received from a timing controller; an accumulator which accumulates the deterioration data and generates age data in which the deterioration data is accumulated; and a compensator which determines a grayscale compensation value corresponding to the age data and an input grayscale value of the input image data, and outputs age compensation data by applying the grayscale compensation value to the input image data. The sensing frequency information includes a frequency of the current frame, and the deterioration data varies in accordance with the frequency of the current frame.
    Type: Grant
    Filed: November 10, 2021
    Date of Patent: June 6, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jae Hoon Lee, Seung Ho Park, Jin Ho Lee, Sang Myeon Han
  • Display device and method of driving the same
    Patent number: 11670228
    Abstract: A display device includes: a display unit including a scan line, a data line, and a pixel connected to the scan line and the data line; a scan driver for supplying a scan signal to the scan line; a data driver for supplying a data signal to the data line in a display mode, supplying a first voltage and a second voltage to the data line respectively during a first period and a second period in a sensing mode, and outputting a first sensing signal and a second sensing signal by sensing a driving current of the pixel during the first period and the second period; and a timing controller for converting first image data into second image data, based on the first sensing signal and the second sensing signal.
    Type: Grant
    Filed: September 26, 2022
    Date of Patent: June 6, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jae Hoon Lee, Jung Taek Kim
  • Display device
    Patent number: 11670248
    Abstract: A display device includes a display panel including a first data line, a second data line, and a pixel, the pixel including a first sub-pixel coupled to the first data line, and a second sub-pixel coupled to the second data line, a light stress compensator configured to generate a first data voltage control signal for the first sub-pixel based on a second data value of input image data for the second sub-pixel, in response to a first data value of input image data for the first sub-pixel being equal to or less than a first reference value, and a data driver configured to generate a first data signal based on the first data value for the first sub-pixel, to provide a first data voltage to the first data line, and to vary the first data voltage based on the first data voltage control signal.
    Type: Grant
    Filed: January 10, 2022
    Date of Patent: June 6, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jae Hoon Lee, Hyun Bo Byun, Kyoung Ho Lim
  • PIXEL DRIVING CIRCUIT CAPABLE OF OPERATING IN LOW-DEFINITION MODE AND HIGH-DEFINITION MODE USING SAME PIXEL MEMORY, AND DISPLAY DEVICE COMPRISING SAME
    Publication number: 20230154387
    Abstract: Provided is a pixel driving circuit operatable in a low-definition mode and a high-definition mode using the same pixel memory, and a display device including the same. The pixel driving circuit may include a driving line configured to connect between an emitter and a positive power source or between the emitter and a negative power source, a first transistor connected in series on the driving line and turned on in response to a pulse width modulation (PWM) signal, a first driving unit and a second driving unit that are connected in series on the driving line and electrically connected in parallel to each other, and a second transistor connected between a reference voltage source, which is connected to apply a reference voltage to the first driving unit and the second driving unit, and the second driving unit and turned on or off in response to a display mode selection signal.
    Type: Application
    Filed: October 22, 2020
    Publication date: May 18, 2023
    Applicant: SAPIEN SEMICONDUCTORS INC.
    Inventors: Jae Hoon LEE, Jin Woong JANG
  • Scan driver and display device having the same
    Patent number: 11651738
    Abstract: An nth (where n is a natural number) stage is included in a scan driver of a display. The nth stage includes: a first input circuit for controlling a voltage of a first node in response to a carry signal of a previous stage; a second input circuit for controlling the voltage of the first node in response to a carry signal of a next stage; a first control circuit for controlling a voltage of an output terminal in response to the carry signal of the next stage; an output circuit for outputting an nth scan signal and an nth carry signal in response to the voltage of the first node and a voltage of a second node; and a leakage control circuit for supplying a control voltage to the first input circuit and the second input circuit in response to one of the nth scan signal and the nth carry signal.
    Type: Grant
    Filed: July 4, 2021
    Date of Patent: May 16, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jae Hoon Lee, Kuk Hwan Ahn, Seok Ha Hong
  • DISPLAY BRIGHTNESS CONTROL DEVICE
    Publication number: 20230144029
    Abstract: Provided is a device for controlling luminance of a display, having a simplified ACL circuit compared to the prior art. The device for controlling luminance of a display calculates the average luminance (Y_avg) when video data is input, and determines the luminance variation (?Y) according to the average luminance. The device for controlling luminance of a display may adjust the luminance of a display by controlling a current (driving current) that is used to drive a light-emitting diode included in a pixel, instead of modifying video data for the adjustment of luminance. That is, unlike the prior art, the device for controlling luminance of a display does not modify video data, for the control of luminance.
    Type: Application
    Filed: May 24, 2021
    Publication date: May 11, 2023
    Applicant: SAPIEN SEMICONDUCTORS INC.
    Inventors: Jae Hoon LEE, Sung Qwan OH
  • DISPLAY PANEL
    Publication number: 20230146693
    Abstract: A display panel includes an amorphous silicon gate driver in which a lower voltage than the gate-off voltage output from the gate driver is applied to an adjacent stage as a low voltage transmission signal.
    Type: Application
    Filed: January 12, 2023
    Publication date: May 11, 2023
    Inventors: JAE-HOON LEE, Seung-Hwan Moon, Yong-Soon Lee, Young-Su Kim, Chang-Ho Lee, Whee-Won Lee, Jun-Yong Song, Yu-Han Bae
  • Pixel driving circuit
    Patent number: 11645975
    Abstract: The present embodiments disclose a pixel driving circuit and a display device including the same. A pixel driving circuit according to an embodiment of the present disclosure includes a first pixel circuit configured to control light-emission and non-emission of the luminous element in response to a control signal applied to each of a plurality of subframes constituting a frame during a light-emitting period and a second pixel circuit storing a bit value of image data in a data writing period and generating the control signal based on the bit value and a clock signal in the light-emitting period.
    Type: Grant
    Filed: May 31, 2022
    Date of Patent: May 9, 2023
    Assignee: SAPIEN SEMICONDUCTORS INC.
    Inventor: Jae Hoon Lee
  • SURFACE-EMITTING LASER DEVICE AND DISTANCE MEASUREMENT DEVICE HAVING SAME
    Publication number: 20230132771
    Abstract: A surface-emitting laser device disclosed in an embodiment of the invention includes a first region in which a plurality of first emitters is arranged; and a second region in which a plurality of second emitters is arranged, an area of the second region is smaller than an area of the first region, and the second region is disposed in a center region of the first region, and the first emitter and the second emitter may be driven separately.
    Type: Application
    Filed: March 17, 2021
    Publication date: May 4, 2023
    Applicant: LG INNOTEK CO., LTD.
    Inventors: Sang Heon HAN, Kang Yeol PARK, Jae Hoon LEE, Yong Gyeong LEE
  • DISPLAY DEVICE
    Publication number: 20230138436
    Abstract: A display device is disclosed that includes pixels, a memory, and a degradation compensator. The pixels include light emitting elements. The memory is operable to store degradation information including degradation degrees of the light emitting elements. The degradation compensator is operable to receive the degradation information and generate output grayscales by changing each of input grayscales of the pixels in proportion to each of the degradation degrees. The degradation compensator includes a degradation information changer for changing the degradation information by decreasing a degradation degree having a variation greater than a threshold value among variations of the degradation degrees.
    Type: Application
    Filed: September 20, 2022
    Publication date: May 4, 2023
    Inventors: Jae Hoon LEE, Kyoung Ho LIM, Seung Ho PARK, Hee Sook PARK, Sang Myeon HAN
  • DISPLAY DEVICE AND METHOD OF DRIVING THE SAME
    Publication number: 20230133826
    Abstract: A display device includes: a display unit including a scan line, a data line, and a pixel connected to the scan line and the data line; a scan driver for supplying a scan signal to the scan line; a data driver for supplying a data signal to the data line in a display mode, supplying a first voltage and a second voltage to the data line respectively during a first period and a second period in a sensing mode, and outputting a first sensing signal and a second sensing signal by sensing a driving current of the pixel during the first period and the second period; and a timing controller for converting first image data into second image data, based on the first sensing signal and the second sensing signal.
    Type: Application
    Filed: September 26, 2022
    Publication date: May 4, 2023
    Inventors: Jae Hoon LEE, Jung Taek KIM
  • DISPLAY DEVICE AND METHOD OF COMPENSATING FOR DEGRADATION THEREOF
    Publication number: 20230134326
    Abstract: A display device may include first pixels disposed in a display area and including respective first driving transistors. A second pixel is disposed in a non-display area and includes a second driving transistor. A sensor is configured to sense a current of the second pixel during a sensing period and generate sensing data. A degradation compensator is configured to convert first image data into second image data. A data driver is configured to generate data signals based on the second image data and supply the data signals to the first pixels. The degradation compensator calculates an age of the first pixels based on accumulating the second image data, converts the first image data into the second image data by deriving a compensation value from representative compensation data according to the age of the first pixels, and calibrates the representative compensation data based on the sensing data.
    Type: Application
    Filed: August 3, 2022
    Publication date: May 4, 2023
    Inventors: JAE HOON LEE, TETSUHIRO TANAKA, DAE SEOP KIM, CHEOL MIN KIM, BYUNG HYUK SHIN, HAI JUNG IN, BYUNG KI CHUN
  • DISTANCE MEASURING CAMERA APPARATUS
    Publication number: 20230078421
    Abstract: According to an embodiment of the present invention, disclosed is a camera apparatus comprising: a substrate; a light emitting part; a light receiving part comprising an image sensor located on the substrate; and a controller that controls the optical part or the light source using an output value received from a photodetector, wherein the light emitting part comprises: a light source located on the substrate; a holder located on the substrate; an optical part located on the light source; a driving part that moves the optical part along an optical axis; and the photodetector located on the substrate.
    Type: Application
    Filed: March 2, 2021
    Publication date: March 16, 2023
    Applicant: LG INNOTEK CO., LTD.
    Inventors: Sang Heon HAN, Bum Jin KIM, Seok Hyun KIM, In Jun SEO, Myung Jin SONG, Jae Hoon LEE
  • Pixel driving circuit
    Patent number: 11605337
    Abstract: The present embodiments disclose a pixel driving circuit and a display device including the same. A pixel driving circuit according to an embodiment of the present disclosure includes a first pixel circuit configured to control light-emission and non-emission of the luminous element in response to a control signal applied to each of a plurality of subframes constituting a frame during a light-emitting period and a second pixel circuit storing a bit value of image data in a data writing period and generating the control signal based on the bit value and a clock signal in the light-emitting period.
    Type: Grant
    Filed: May 31, 2022
    Date of Patent: March 14, 2023
    Assignee: SAPIEN SEMICONDUCTORS INC.
    Inventor: Jae Hoon Lee
  • HIGH STRENGTH STEEL SHEET HAVING SUPERIOR WORKABILITY AND METHOD FOR MANUFACTURING SAME
    Publication number: 20230052872
    Abstract: Provided is a steel sheet which can be used for automobile parts and the like, and relates to a steel sheet having a superior balance of strength and ductility and strength and a hole expansion ratio and superior bending formability, and a method for manufacturing same.
    Type: Application
    Filed: November 24, 2020
    Publication date: February 16, 2023
    Inventors: Jae-Hoon LEE, Sang-Ho HAN
  • HIGH-STRENGTH STEEL SHEET HAVING SUPERIOR WORKABILITY AND MANUFACTURING METHOD THEREFOR
    Publication number: 20230049143
    Abstract: Provided is a steel sheet and a method for manufacturing same, the steel sheet, which is optimized a composition and microstructure, and which can be used for automobile parts and the like, having superb bendability, and superior balance of strength and ductility and of strength and hole expansion ratio.
    Type: Application
    Filed: November 25, 2020
    Publication date: February 16, 2023
    Inventors: Jae-Hoon LEE, Sang-Ho HAN
  • HIGH STRENGTH STEEL SHEET HAVING SUPERIOR WORKABILITY AND METHOD FOR MANUFACTURING SAME
    Publication number: 20230046327
    Abstract: Provided is a steel sheet which can be used for automobile parts and the like, and relates to a steel sheet having a superior balance of strength and ductility and strength and hole expansion ratio and superior bending formability, and a method for manufacturing same.
    Type: Application
    Filed: November 24, 2020
    Publication date: February 16, 2023
    Inventors: Jae-Hoon LEE, Young-Roc IM
  • Display panel having a gate driver integrated therein
    Patent number: 11580926
    Abstract: A display panel includes an amorphous silicon gate driver in which a lower voltage than the gate-off voltage output from the gate driver is applied to an adjacent stage as a low voltage transmission signal.
    Type: Grant
    Filed: August 19, 2021
    Date of Patent: February 14, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jae-Hoon Lee, Seung-Hwan Moon, Yong-Soon Lee, Young-Su Kim, Chang-Ho Lee, Whee-Won Lee, Jun-Yong Song, Yu-Han Bae
  • Ornament for mounting electronic device
    Patent number: D984432
    Type: Grant
    Filed: October 22, 2020
    Date of Patent: April 25, 2023
    Inventor: Jae-Hoon Lee