Patents by Inventor Hee Chul Hwang
Hee Chul Hwang 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).
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Publication number: 20240282256Abstract: A display device includes a display panel including first and second areas. The display panel includes: pixels located in the first and second areas and connected to scan lines, and including light emitting elements; first light sensors located in the first area and connected to the scan lines, and including first light receiving elements; and second light sensors located in the second area and connected to the scan lines, and including second light receiving elements. The first and second light sensors are connected to a reset line. A reset signal of a first pattern is applied to the reset line in a first mode in which sensing information is generated based on the first light sensors. The reset signal of a second pattern is applied to the reset line in a second mode in which sensing information is generated based on the second light sensors.Type: ApplicationFiled: February 15, 2024Publication date: August 22, 2024Inventors: IL NAM KIM, HYUN DAE LEE, KANG BIN JO, GO EUN CHA, HEE CHUL HWANG
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Patent number: 12067946Abstract: A display device includes: a display panel; a scan driver to provide scan signals to scan lines; an emission driver to provide emission control signals to emission control lines; and a readout circuit to receive a sensing signal from a readout line. The display panel includes: a first pixel in a first row, and connected to a first sub-scan line from among the scan lines, and a first emission control line; a first photo sensor in the first row, and connected to the first sub-scan line, a reset control line, and the readout line; a second pixel in a second row, and connected to a second sub-scan line from among the scan lines, and a second emission control line; and a second photo sensor in the second row, and connected to the second sub-scan line, a third emission control line, and the readout line.Type: GrantFiled: March 28, 2023Date of Patent: August 20, 2024Assignee: Samsung Display Co., Ltd.Inventors: Il Nam Kim, Hyun Dae Lee, Kang Bin Jo, Go Eun Cha, Hee Chul Hwang
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Patent number: 12037477Abstract: Provided is a near-infrared ray absorbing article. A near-infrared ray absorbing article of the present invention is capable of preventing a decrease in visible transmittance and near-infrared absorption due to the interaction between a plurality of organic materials forming light-absorbing layers. In addition, the near-infrared ray absorbing article of the present invention has the advantage of being able to be thinner. In addition, the near-infrared ray absorbing article of the present invention has the advantage of excellent mechanical properties such as strength and heat resistance.Type: GrantFiled: December 1, 2020Date of Patent: July 16, 2024Assignee: LMS CO., LTD.Inventors: Sung Hwan Moon, Seung Man Han, Seon Ho Yang, Tae Kwang Park, Joon Ho Jung, Bo Chul Kang, Hee Kyeong Kim, Seong Don Hwang, Seong Yong Yoon, Ho Seong Na, Ji Tae Kim
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Publication number: 20240233435Abstract: A display device comprises a display panel comprising an image display area and a non-display area, display pixels comprising light-emitting elements in the image display area and pixel driving units connected to the light-emitting elements, light-sensing pixels comprising photo-detecting units in a fingerprint sensing area in the image display area, and sense driving units connected to the photo-detecting units, a light-sensing reset driver configured to supply reset signals to the sense driving units of the light-sensing pixels for at least each horizontal line among the light-sensing pixels in response to a line select signal from a display driving circuit; and a fingerprint scan driver configured to sequentially supply a fingerprint scan signal to the sense driving units of the light-sensing pixels in response to a fingerprint scan control signal from the display driving circuit.Type: ApplicationFiled: September 28, 2023Publication date: July 11, 2024Inventors: Hyun Dae LEE, Il Nam KIM, Hyoung Wook JANG, Kang Bin JO, Go Eun CHA, Hee Chul HWANG
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Publication number: 20240161684Abstract: A display device includes: a display panel; an emission driver; a scan driver; and a timing controller. The display panel includes light emitting pixels and photosensitive pixels, where the photosensitive pixels are operated in an initialization period, a light exposure period and a sensing period. The emission driver supplies emission control signals to emission control lines connected to the light emitting pixels, based on an emission start signal. The scan driver supplies scan signals to scan lines connected to the light emitting pixels and the photosensitive pixels, based on a scan start signal. The timing controller generates the emission start signal having a single pulse of a gate-off level and the scan start signal having a single pulse of a gate-on level in a last frame period among frame periods corresponding to the light exposure period and in each of frame periods corresponding to the sensing period.Type: ApplicationFiled: November 7, 2023Publication date: May 16, 2024Inventors: Hyun Dae LEE, Kang Bin JO, Il Nam KIM, Go Eun CHA, Hee Chul HWANG
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Publication number: 20240135744Abstract: A display device comprises a display panel comprising an image display area and a non-display area, display pixels comprising light-emitting elements in the image display area and pixel driving units connected to the light-emitting elements, light-sensing pixels comprising photo-detecting units in a fingerprint sensing area in the image display area, and sense driving units connected to the photo-detecting units, a light-sensing reset driver configured to supply reset signals to the sense driving units of the light-sensing pixels for at least each horizontal line among the light-sensing pixels in response to a line select signal from a display driving circuit; and a fingerprint scan driver configured to sequentially supply a fingerprint scan signal to the sense driving units of the light-sensing pixels in response to a fingerprint scan control signal from the display driving circuit.Type: ApplicationFiled: September 27, 2023Publication date: April 25, 2024Inventors: Hyun Dae LEE, Il Nam KIM, Hyoung Wook JANG, Kang Bin JO, Go Eun CHA, Hee Chul HWANG
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Publication number: 20230402014Abstract: A display device includes: a display panel; a scan driver to provide scan signals to scan lines; an emission driver to provide emission control signals to emission control lines; and a readout circuit to receive a sensing signal from a readout line. The display panel includes: a first pixel in a first row, and connected to a first sub-scan line from among the scan lines, and a first emission control line; a first photo sensor in the first row, and connected to the first sub-scan line, a reset control line, and the readout line; a second pixel in a second row, and connected to a second sub-scan line from among the scan lines, and a second emission control line; and a second photo sensor in the second row, and connected to the second sub-scan line, a third emission control line, and the readout line.Type: ApplicationFiled: March 28, 2023Publication date: December 14, 2023Inventors: Il Nam KIM, Hyun Dae LEE, Kang Bin JO, Go Eun CHA, Hee Chul HWANG
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Publication number: 20230397472Abstract: Provided is a display device including a substrate including a fingerprint area. The fingerprint area includes a first area and a second area. A light-emitting element layer is disposed on the substrate. The light-emitting element layer includes light-emitting elements. A sensor layer is disposed on the substrate, the sensor layer including photosensors. The light-emitting elements include a first light-emitting element arranged in the first area and a second light-emitting element arranged in the second area. During a fingerprint sensing period, the first light-emitting element emits light and the second light-emitting element does not emit light.Type: ApplicationFiled: August 16, 2023Publication date: December 7, 2023Inventors: YUN HO KIM, Keum Dong Jung, Jin Oh Kwag, Won Sang Park, Deok Hwa Woo, Bong Hyun You, Chul Kim, Seung Hyun Moon, Jun Hee Moon, Hee Chul Hwang
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Publication number: 20230360427Abstract: A display device including: scan lines including first and second scan lines; pixels connected to the scan lines; photo sensors connected to some of the scan lines, the photo sensors including a first photo sensor connected to the first scan line and a readout line, and a second photo sensor connected to the second scan line and the readout line; a scan driver to provide scan signals to the scan lines; and a readout circuit to receive, through the readout line, detection signals which are outputted from the photo sensors in response to the scan signals, wherein, while the scan signals are provided to the first and second scan lines, the readout circuit samples a detection signal of one of the first photo sensor and the second photo sensor without sampling a detection signal of the other one of the first photo sensor and the second photo sensor.Type: ApplicationFiled: April 18, 2023Publication date: November 9, 2023Inventors: Il Nam KIM, Seung Hyun MOON, Dong Wook YANG, Hyun Dae LEE, Kang Bin JO, Go Eun CHA, Hee Chul HWANG
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Publication number: 20230320168Abstract: A display device includes a substrate having an active region and a first non-active region positioned around the active region. A plurality of pixels is disposed in the active region and emits light. A light source unit is disposed in the first non-active region and emits light. A plurality of optical sensors is disposed in the active region and senses incident light emitted by the light source unit. An encapsulation layer is disposed on the plurality of pixels, the plurality of optical sensors, and the light source unit. A scattering pattern layer is disposed on the encapsulation layer in the first non-active region and includes a plurality of holes.Type: ApplicationFiled: January 6, 2023Publication date: October 5, 2023Inventors: Il Nam KIM, Seung Hyun MOON, Dong Wook YANG, Hyun Dae LEE, Kang Bin JO, Go Eun CHA, Hee Chul HWANG
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Patent number: 11758793Abstract: Provided is a display device including a substrate including a fingerprint area. The fingerprint area includes a first area and a second area. A light-emitting element layer is disposed on the substrate. The light-emitting element layer includes light-emitting elements. A sensor layer is disposed on the substrate, the sensor layer including photosensors. The light-emitting elements include a first light-emitting element arranged in the first area and a second light-emitting element arranged in the second area. During a fingerprint sensing period, the first light-emitting element emits light and the second light-emitting element does not emit light.Type: GrantFiled: August 13, 2020Date of Patent: September 12, 2023Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Yun Ho Kim, Keum Dong Jung, Jin Oh Kwag, Won Sang Park, Deok Hwa Woo, Bong Hyun You, Chul Kim, Seung Hyun Moon, Jun Hee Moon, Hee Chul Hwang
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Patent number: 11568036Abstract: A display device including a fingerprint sensor including a first layer having at least one photo sensor to generate a fingerprint image corresponding to reflected light from a fingerprint contact surface, light emitting elements to transmit light reflected by the fingerprint, and a second layer including pin holes to allow reflected light to be incident upon the at least one photo sensor; and a fingerprint detector to receive the fingerprint image from the fingerprint sensor, to extract a first image corresponding to a first region of the fingerprint and a second image corresponding to a second region of the fingerprint, to compare the first and second images to determine similarity, and to perform fingerprint authentication, based on similarity determination, where the fingerprint first region is in contact with the fingerprint contact surface and the fingerprint second region is not in contact with the fingerprint contact surface.Type: GrantFiled: November 7, 2021Date of Patent: January 31, 2023Assignee: Samsung Display Co., Ltd.Inventors: Won Sang Park, Jin Oh Kwag, Il Nam Kim, Ji Hun Ryu, Seung Hyun Moon, Bong Hyun You, Jong Hyun Lee, Hee Chul Hwang
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Patent number: 11488412Abstract: A fingerprint sensor includes a substrate, a light blocking layer that is on a first surface of the substrate and includes openings in a light blocking mask, and a sensor layer that is on a second surface of the substrate and includes photo sensors. A fingerprint sensing method of the fingerprint sensor includes: storing a calibration image; generating an original image, based on sensing signals from the photo sensors; performing calibration on the original image by utilizing the calibration image; and detecting a fingerprint, based on the calibrated image. The calibration image is generated by synthetizing valid regions extracted from an original calibration image corresponding to the original image.Type: GrantFiled: August 2, 2021Date of Patent: November 1, 2022Assignee: Samsung Display Co., Ltd.Inventors: Hyun Dae Lee, Seung Hyun Moon, Dong Wook Yang, Hee Chul Hwang, Deok Hwa Woo, Young Eun Lee
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Publication number: 20220058254Abstract: A display device including a fingerprint sensor including a first layer having at least one photo sensor to generate a fingerprint image corresponding to reflected light from a fingerprint contact surface, light emitting elements to transmit light reflected by the fingerprint, and a second layer including pin holes to allow reflected light to be incident upon the at least one photo sensor; and a fingerprint detector to receive the fingerprint image from the fingerprint sensor, to extract a first image corresponding to a first region of the fingerprint and a second image corresponding to a second region of the fingerprint, to compare the first and second images to determine similarity, and to perform fingerprint authentication, based on similarity determination, where the fingerprint first region is in contact with the fingerprint contact surface and the fingerprint second region is not in contact with the fingerprint contact surface.Type: ApplicationFiled: November 7, 2021Publication date: February 24, 2022Inventors: Won Sang PARK, Jin Oh KWAG, ILNAM KIM, Ji Hun RYU, Seung Hyun MOON, Bong Hyun YOU, Jong Hyun LEE, Hee Chul HWANG
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Publication number: 20210365661Abstract: A fingerprint sensor includes a substrate, a light blocking layer that is on a first surface of the substrate and includes openings in a light blocking mask, and a sensor layer that is on a second surface of the substrate and includes photo sensors. A fingerprint sensing method of the fingerprint sensor includes: storing a calibration image; generating an original image, based on sensing signals from the photo sensors; performing calibration on the original image by utilizing the calibration image; and detecting a fingerprint, based on the calibrated image. The calibration image is generated by synthetizing valid regions extracted from an original calibration image corresponding to the original image.Type: ApplicationFiled: August 2, 2021Publication date: November 25, 2021Inventors: Hyun Dae LEE, Seung Hyun MOON, Dong Wook YANG, Hee Chul HWANG, Deok Hwa WOO, Young Eun LEE
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Patent number: 11170090Abstract: A display device includes a fingerprint sensor including a first layer having at least one photo sensor to generate a fingerprint image corresponding to reflected light from a fingerprint contact surface, light emitting elements to transmit light reflected by the fingerprint, and a second layer including pin holes to allow reflected light to be incident upon the at least one photo sensor; and fingerprint detector to receive the fingerprint image from the fingerprint sensor, to extract a first image corresponding to a first region of the fingerprint and a second image corresponding to a second region of the fingerprint, to compare the first and second images to determine similarity, and to perform fingerprint authentication, based on similarity determination, where the fingerprint first region is in contact with the fingerprint contact surface and the fingerprint second region is not in contact with the fingerprint contact surface.Type: GrantFiled: August 19, 2020Date of Patent: November 9, 2021Assignee: Samsung Display Co., LTD.Inventors: Won Sang Park, Jin Oh Kwag, Il Nam Kim, Ji Hun Ryu, Seung Hyun Moon, Bong Hyun You, Jong Hyun Lee, Hee Chul Hwang
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Patent number: 11080507Abstract: A fingerprint sensor includes a substrate, a light blocking layer that is on a first surface of the substrate and includes openings in a light blocking mask, and a sensor layer that is on a second surface of the substrate and includes photo sensors. A fingerprint sensing method of the fingerprint sensor includes: storing a calibration image; generating an original image, based on sensing signals from the photo sensors; performing calibration on the original image by utilizing the calibration image; and detecting a fingerprint, based on the calibrated image. The calibration image is generated by synthetizing valid regions extracted from an original calibration image corresponding to the original image.Type: GrantFiled: July 30, 2020Date of Patent: August 3, 2021Assignee: Samsung Display Co., Ltd.Inventors: Hyun Dae Lee, Seung Hyun Moon, Dong Wook Yang, Hee Chul Hwang, Deok Hwa Woo, Young Eun Lee
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Patent number: 11024241Abstract: A timing controller may include a first compensator configured to generate second data by optically compensating for first data, based on compensation data, a first compensation memory configured to store the compensation data, a second compensator configured to generate image data by compensating for a lifetime of the second data, based on accumulated data of the second data, and a second compensation memory configured to store the accumulated data and the compensation data.Type: GrantFiled: April 22, 2019Date of Patent: June 1, 2021Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Hyun Dae Lee, Seung Hyun Moon, Dong Wook Yang, Bit Na Lee, Hee Chul Hwang
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Publication number: 20210142029Abstract: A display device includes a display panel including a plurality of pixels configured to display an image, a photo sensor on one surface of the display panel to sense light, and a fingerprint detector configured to control a fake determination image pattern of a fingerprint sensing area of the display panel configured to sense a fingerprint, and to perform fingerprint authentication and fake fingerprint determination, based on a sensing signal supplied from the photo sensor.Type: ApplicationFiled: July 13, 2020Publication date: May 13, 2021Inventors: Seung Hyun MOON, Yun Ho KIM, Jin Oh KWAG, Won Sang PARK, Bong Hyun YOU, Keum Dong JUNG, Chul KIM, Jun Hee MOON, Deok Hwa WOO, Hee Chul HWANG
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Publication number: 20210125577Abstract: In a method of generating compensation data for a display device, first color, second color, and third color compensation value sets may be obtained by capturing first color, second color, and third color images displayed by the display device, respectively, white, first color, second color, and third color loading luminances may be obtained by capturing white, first color, second color, and third color loading patterns displayed by the display device, respectively, first color, second color, and third color scale factors may be calculated by dividing a luminance decrease ratio of the white loading luminance by luminance decrease ratios of the first color, second color, and third color loading luminances, respectively, and the first color, second color, and third color compensation value sets and the first color, second color, and third color scale factors may be stored in the display device.Type: ApplicationFiled: July 14, 2020Publication date: April 29, 2021Inventors: Seok Ha HONG, Dong Joon KWAG, Hyung Jin KIM, Ji-Eun PARK, Hye-Sang PARK, Hyun Seuk YOO, Hee Chul HWANG