Patents by Inventor Jin-Oh Kwag
Jin-Oh Kwag 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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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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Publication number: 20210343784Abstract: A display device comprises a substrate including a display area and a non-display area, and pixels disposed in the display area, each of the pixels including sub-pixels. Each of sub-pixels includes a pixel circuit layer, and a display element layer including at least one light emitting element. The display element layer includes first and second electrodes spaced apart from each other, the light emitting element disposed between the first electrode and second electrode, a first contact electrode that electrically connects an end of the light emitting element to the first electrode, and a second contact electrode that electrically connects another end of the light emitting element to the second electrode. Each of sub-pixels includes a first area in which the pixel circuit layer is disposed, and a second area adjacent to the first area. The second area includes a transmission area through which the light passes.Type: ApplicationFiled: April 15, 2019Publication date: November 4, 2021Applicant: SAMSUNG DISPLAY CO., LTD.Inventors: Jin Oh KWAG, Jong Hyuk KANG, Keun Kyu SONG, Sung-Chan JO, Hyun Min CHO
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Publication number: 20210334496Abstract: A fingerprint recognition device including: a sensing panel including a plurality of sensing blocks, wherein each of the sensing blocks includes a plurality of sensors; a scan driving unit configured to provide a scan signal to the sensors; and a timing controller configured to provide a second initiation signal to the scan driving unit, wherein each of the sensors includes a reference capacitor and a sensing capacitor, the scan driving unit includes scan drivers that correspond to rows of the sensing blocks, in a fingerprint recognition mode, the timing controller provides the second initiation signal to a scan driver corresponding to a sensing block where a touch input is generated, and in a touch mode, the timing controller sequentially provides the second initiation signal to the scan drivers.Type: ApplicationFiled: July 8, 2021Publication date: October 28, 2021Inventors: Keum Dong JUNG, II Nam Kim, Kyung Tea Park, Jin Oh Kwag, Won Sang Park, Sung Chan Jo
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Publication number: 20210336142Abstract: An inkjet printing apparatus, a dipole alignment method, and a display device manufacturing method are provided. The inkjet printing apparatus includes a stage, a print head part disposed above the stage, and an electric field generating part that provides an electric field to a space between the stage and the print head part. The dipole alignment method includes providing an electric field at an area above a target substrate, spraying ink including a dipole onto the target substrate through the area, and landing the dipole on the target substrate. The display device manufacturing method includes preparing a base layer on which first and second electrodes are disposed, spraying ink including a light emitting element onto the base layer through the area, landing the light emitting element between the first and second electrodes.Type: ApplicationFiled: April 8, 2019Publication date: October 28, 2021Applicant: Samsung Display Co., LTD.Inventors: Heung Cheol JEONG, Byung Chul LEE, Myung Soo HUH, Jin Oh KWAG, Do Hun LEE
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Publication number: 20210327954Abstract: A display device comprises a first electrode, a second electrode disposed to be spaced apart from the first electrode and face the first electrode, a first insulating layer disposed to cover the first electrode and the second electrode, a second insulating layer disposed on at least a part of the first insulating layer and exposing at a part of a region where the first electrode and the second electrode overlaps the first insulating layer and at least one light emitting element on the exposed first insulating layer between the first electrode and the second electrode, wherein the second insulating layer includes at least one opening exposing the first insulating layer and disposed to be spaced apart from each other on a region where the first electrode and the second electrode face each other, and a bridge portion between the openings, and the light emitting element is disposed on the opening.Type: ApplicationFiled: September 21, 2018Publication date: October 21, 2021Inventors: Hyun Min CHO, Dae Hyun KIM, Jin Oh KWAG, Dong Hyun KIM, Keun Kyu SONG, Hyun Deok IM, Sung Chan JO
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Publication number: 20210320089Abstract: An apparatus for manufacturing a light emitting display device includes a substrate transfer stage including a plurality of support plates arranged at an interval in a first direction, each of the plurality of support plates extending in a second direction; and at least one electric-field application module disposed on at least one side of the substrate transfer stage. The at least one electric-field application module includes a probe head including at least one probe pin; and a driver connected to the probe head to move the probe head at least up and down.Type: ApplicationFiled: March 21, 2019Publication date: October 14, 2021Applicant: SAMSUNG DISPLAY CO., LTD.Inventors: Jong Hyuk KANG, Hae Yun CHOI, Han Su KIM, Eun A YANG, Hyun Min CHO, Keun Kyu SONG, Jin Oh KWAG
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Patent number: 11122361Abstract: Provided are display devices and methods of driving the same. A display device may include: a display panel, a main sound generator and a sub-sound generator disposed on a surface of the display panel. The main sound generator outputs sound in a first directional mode, and each of the main sound generator and the sub-sound generator outputs sound in a second directional mode. Each directional mode may be a mode in which sound is directed towards a particular viewer's location.Type: GrantFiled: September 27, 2019Date of Patent: September 14, 2021Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Young Ran Son, Jin Oh Kwag, Jee Hyun Lee
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Publication number: 20210280746Abstract: A display device includes a first electrode, a second electrode spaced apart from the first electrode to face the first electrode, a first insulation layer, at least one light emitting element, a second insulation layer, a first contact electrode, and a second contact electrode. The first insulation layer includes an overlapping area which overlaps the at least one light emitting element, a first non-overlapping area which extends outward from the first end of the at least one light emitting element and does not overlap the at least one light emitting element, and a second non-overlapping area which extends outward from the second end of the at least one light emitting element and does not overlap the at least one light emitting element.Type: ApplicationFiled: January 3, 2019Publication date: September 9, 2021Applicant: Samsung Display Co., LTD.Inventors: Dae Hyun KIM, Hyun Min CHO, Jin Oh KWAG, Keun Kyu SONG, Sung Chan JO
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Patent number: 11113499Abstract: A fingerprint recognition device including: a sensing panel including a plurality of sensing blocks, wherein each of the sensing blocks includes a plurality of sensors; a scan driving unit configured to provide a scan signal to the sensors; and a timing controller configured to provide a second initiation signal to the scan driving unit, wherein each of the sensors includes a reference capacitor and a sensing capacitor, the scan driving unit includes scan drivers that correspond to rows of the sensing blocks, in a fingerprint recognition mode, the timing controller provides the second initiation signal to a scan driver corresponding to a sensing block where a touch input is generated, and in a touch mode, the timing controller sequentially provides the second initiation signal to the scan drivers.Type: GrantFiled: August 20, 2019Date of Patent: September 7, 2021Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Keum Dong Jung, Il Nam Kim, Kyung Tea Park, Jin Oh Kwag, Won Sang Park, Sung Chan Jo
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METHOD OF ALIGNING LIGHT EMITTING ELEMENTS AND METHOD OF MANUFACTURING DISPLAY DEVICE USING THE SAME
Publication number: 20210273131Abstract: A method of aligning light emitting elements includes applying a ground voltage to a first electrode and applying a first AC voltage to a second electrode spaced apart from the first electrode; and applying a ground voltage to the first electrode and applying a second AC voltage to the second electrode, wherein the first AC voltage has an asymmetric waveform.Type: ApplicationFiled: June 10, 2019Publication date: September 2, 2021Applicant: Samsung Display Co., LTD.Inventors: Jong Hyuk KANG, Won Ho LEE, Hyun Deok IM, Jin Oh KWAG, Hyun Min CHO, Won Kyu KIM, Keun Kyu SONG -
Publication number: 20210226165Abstract: A light emitting element and a display device including the same are provided. The light emitting element includes a first semiconductor layer, a second semiconductor layer, and an active layer between the first semiconductor layer and the second semiconductor layer, a protective layer surrounding an outer surface of at least one of the first semiconductor layer, the second semiconductor layer, and the active layer, and an insulating layer surrounding an outer surface of the protective layer. A surface of at least one of the first semiconductor layer, the second semiconductor layer, and the active layer includes a first lattice point, wherein the protective layer includes a first atom and a second atom, and wherein the first atom of the protective layer is at the first lattice point.Type: ApplicationFiled: September 24, 2020Publication date: July 22, 2021Inventors: Yun Hyuk KO, Chang Hee LEE, Jin Oh KWAG, Keun Kyu SONG, Yun Ku JUNG, Sung-Chan JO, Jae Kook HA
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Publication number: 20210200366Abstract: A display device includes a thin-film transistor layer disposed on a substrate and including thin-film transistors; and an emission material layer disposed on the thin-film transistor layer. The emission material layer includes light-emitting elements each including a first light-emitting electrode, an emissive layer and a second light-emitting electrode, light-receiving elements each including a first light-receiving electrode, a light-receiving semiconductor layer and a second light-receiving electrode, and a first bank disposed on the first light-emitting electrode and defining an emission area of each of the light-emitting elements. The light-receiving elements are disposed on the first bank.Type: ApplicationFiled: December 30, 2020Publication date: July 1, 2021Applicant: Samsung Display Co., LTD.Inventors: Seung Lyong BOK, Jong In BAEK, Young Seok SEO, Sun Mi YU, Jong Hyun LEE, Jin Oh KWAG
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Patent number: 11048901Abstract: A display device including a display panel including a display area including a fingerprint sensing area and a plurality of pixels provided in the fingerprint sensing area; a sensor layer provided on one surface of the display panel overlapping the fingerprint sensing area, the sensor layer including a plurality of photo sensors; a panel driving circuit configured to output a data signal corresponding to image data to the display panel, corresponding to a first mode, and to output a driving signal to the display panel to allow the pixels to emit lights in a form corresponding to a predetermined light pattern, corresponding to a second mode; and a fingerprint detecting circuit configured to receive sensing signals from the photo sensors, corresponding to the second mode, the fingerprint detecting circuit detecting a fingerprint of a user, based on a sensing signal corresponding to the light pattern among the received sensing signals.Type: GrantFiled: February 9, 2020Date of Patent: June 29, 2021Assignee: Samsung Display Co., Ltd.Inventors: Jin Woo Kim, Jin Oh Kwag, Hai Jung In, Won Jun Choe
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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: 20210120324Abstract: A display device includes a display panel including a display layer including light-emitting elements disposed on a substrate, and a sensor electrode layer disposed on the display layer. The sensor electrode layer includes a first sound electrode and a second sound electrode; a vibration layer electrically contacting the first sound electrode and the second sound electrode and being deformed in response to a first sound driving voltage applied to the first sound electrode and a second sound driving voltage applied to the second sound electrode; and sensor electrodes disposed on the vibration layer. The sensor electrodes sense an input.Type: ApplicationFiled: October 14, 2020Publication date: April 22, 2021Applicant: Samsung Display Co., LTD.Inventors: Young Seok SEO, Jung Hun NOH, Seung Lyong BOK, Yi Joon AHN, Sun Mi YU, Jin Oh KWAG
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Publication number: 20210083189Abstract: A deposition mask for making a display device, the deposition mask includes: a frame including a first opening; a first member disposed above the first opening of the frame and including a first portion surrounding at least one second opening and a second portion disposed in the second opening and physically separated from the first portion; and a second member disposed on the first member and including a first connecting portion connected to the frame and a second mesh portion overlapping the second portion.Type: ApplicationFiled: June 28, 2020Publication date: March 18, 2021Inventors: Min Ho MOON, Jin Oh KWAG, Seung Yong SONG, Duck Jung LEE, Seul LEE, Sung Soon IM
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Publication number: 20210073507Abstract: 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 13, 2020Publication date: March 11, 2021Inventors: 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: 20210055826Abstract: 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: ApplicationFiled: August 19, 2020Publication date: February 25, 2021Inventors: Won Sang PARK, Jin Oh Kwag, II Nam Kim, Ji Hun Ryu, Seung Hyun Moon, Bong Hyun You, Jong Hyun Lee, Hee Chul Hwang
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Publication number: 20200393936Abstract: A display device includes a display panel including a display layer having light-emitting elements on the substrate, and a sensor electrode layer on the display layer. The sensor electrode layer includes sensor electrodes in a sensor area, sensor lines electrically connected to the sensor electrodes and a first conductive pattern spaced apart from the sensor lines and sensor electrodes. The sensor lines and the first conductive pattern are in a sensor peripheral area adjacent to the sensor area. The first conductive pattern is an antenna.Type: ApplicationFiled: May 27, 2020Publication date: December 17, 2020Applicant: Samsung Display Co., LTD.Inventors: Seung Lyong BOK, Ki Seo KIM, Jae Kyoung KIM, Young Seok SEO, Sun Mi YU, Jin Oh KWAG
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Publication number: 20200381492Abstract: A fingerprint sensor includes: a substrate; a circuit element layer on a first surface of the substrate and including a plurality of conductive layers; a light emitting element layer on the circuit element layer and including light emitting elements and a light shielding layer; and a light sensor layer on a second surface of the substrate and including light sensors, wherein the light shielding layer includes contact holes exposing first electrodes of the light emitting elements, and first opening portions exposing a portion of the circuit element layer, and the circuit element layer includes second opening portions formed in the plurality of conductive layers and includes a light transmission hole of which at least a portion overlaps the first opening portions.Type: ApplicationFiled: May 15, 2020Publication date: December 3, 2020Inventors: Ji Hun RYU, Jin Oh KWAG