公开(公告)号：US11916178B2

公开(公告)日：2024-02-27

申请号：US17297326

申请日：2019-08-23

Applicant: Samsung Display Co., LTD.

Inventor： Jin Oh Kwag ,  Dae Hyun Kim ,  Keun Kyu Song ,  Sung Chan Jo ,  Hyun Min Cho

IPC: H01L33/58 ,  H01L27/15 ,  H01L33/38 ,  H01L33/50

CPC classification number: H01L33/58 ,  H01L27/156 ,  H01L33/382 ,  H01L33/50

Abstract: A display device includes a first electrode and a second electrode that are spaced apart from and facing each other; a light-blocking layer disposed above the first electrode and the second electrode; and at least one light-emitting element disposed between the first electrode and the second electrode. The light-blocking layer includes a light-blocking portion absorbing light and an opening pattern. The light-blocking portion includes an area partially overlapping the first electrode and the second electrode. The at least one opening pattern exposes portions of the first and second electrodes facing each other and at least a portion of an area between the first and second electrodes facing each other. The at least one light-emitting element overlaps the at least one opening pattern.

公开(公告)号：US11568036B2

公开(公告)日：2023-01-31

申请号：US17520699

申请日：2021-11-07

Applicant: Samsung Display Co., Ltd.

Inventor： Won Sang Park ,  Jin Oh Kwag ,  Il Nam Kim ,  Ji Hun Ryu ,  Seung Hyun Moon ,  Bong Hyun You ,  Jong Hyun Lee ,  Hee Chul Hwang

IPC: G06F21/32 ,  G06F3/042 ,  G06V40/13 ,  G06V40/12

Abstract: 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.

公开(公告)号：US11424288B2

公开(公告)日：2022-08-23

申请号：US16784935

申请日：2020-02-07

Applicant: Samsung Display Co., Ltd.

Inventor： Chong Chul Chai ,  Kyung Bae Kim ,  Mee Hye Jung ,  Jin Oh Kwag ,  Min Jae Jeong

IPC: G09G3/32 ,  H01L33/62 ,  H01L27/15 ,  H01L27/12 ,  H01L49/02 ,  H01L23/552 ,  H01L33/06 ,  H01L33/00 ,  H01L33/32

Abstract: A display device includes: a substrate including a pixel; a scan line for supplying a scan signal to the pixel; a data line for supplying a data signal to the pixel; a first power line for supplying a first driving power source to the pixel; a second power line for supplying a second driving power source to the pixel; and a third power line for supplying a ground voltage to the pixel. The pixel includes: first and second electrodes spaced apart from each other on the substrate; a plurality of light emitting elements, each of the light emitting elements having first and second end portions in a length direction thereof and being arranged between the first electrode and the second electrode; and a first switch electrically connected between the third power line and the first electrode. The first switch is configured to be turned on by a control signal.

公开(公告)号：US11423691B2

公开(公告)日：2022-08-23

申请号：US16927622

申请日：2020-07-13

Applicant: Samsung Display Co., Ltd.

Inventor： Seung Hyun Moon ,  Yun Ho Kim ,  Jin Oh Kwag ,  Won Sang Park ,  Bong Hyun You ,  Keum Dong Jung ,  Chui Kim ,  Jun Hee Moon ,  Deok Hwa Woo ,  Hee Chui Hwang

IPC: G06V40/13 ,  G06V40/12

Abstract: 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.

公开(公告)号：US20210334496A1

公开(公告)日：2021-10-28

申请号：US17370206

申请日：2021-07-08

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Keum Dong JUNG ,  II Nam Kim ,  Kyung Tea Park ,  Jin Oh Kwag ,  Won Sang Park ,  Sung Chan Jo

IPC: G06K9/00

Abstract: 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.

公开(公告)号：US20180285619A1

公开(公告)日：2018-10-04

申请号：US15831317

申请日：2017-12-04

Applicant: Samsung Display Co., Ltd.

Inventor： Jin Woo Kim ,  Jin Oh Kwag ,  Hai Jung In ,  Won Jun Choe

IPC: G06K9/00 ,  G09G3/3233 ,  G09G3/3266 ,  G09G3/3275

Abstract: 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.

公开(公告)号：US12080693B2

公开(公告)日：2024-09-03

申请号：US17277270

申请日：2019-05-29

Applicant: Samsung Display Co., Ltd.

Inventor： Won Ho Lee ,  Yo Han Lee ,  Jong Hyuk Kang ,  Jin Oh Kwag ,  Hyun Deok Im ,  Hyun Min Cho ,  Won Kyu Kim ,  Keun Kyu Song

IPC: H01L25/16 ,  H01L27/12

CPC classification number: H01L25/167 ,  H01L27/124

Abstract: A display device and a method of manufacturing the same are provided. The display device comprises a first area which extends in a first direction, a second area which extends in the first direction and is alongside the first area in a second direction intersecting the first direction, at least one first light emitting element in the first area, at least one second light emitting element in the second area, at least one first wiring coupled to an end of the first light emitting element in the first area and that extends in the first direction and at least one second wiring coupled to an end of the second light emitting element in the second area and that extends in the first direction, wherein the first wiring and the second wiring are electrically isolated from each other.

公开(公告)号：US12005706B2

公开(公告)日：2024-06-11

申请号：US17786931

申请日：2020-06-05

Applicant: Samsung Display Co., LTD.

Inventor： An Na Ryu ,  Jin Oh Kwag ,  Heung Cheol Jeong

IPC: B41J2/18 ,  B41J2/045 ,  B41J2/125 ,  B41M5/00

CPC classification number: B41J2/04561 ,  B41J2/125 ,  B41J2/18 ,  B41M5/0023

Abstract: An inkjet printing device includes a stage; an inkjet head disposed above the stage and comprising nozzles through which ink is discharged, the ink including bipolar elements extending in a direction; an ink circulation part which supplies the ink to the inkjet head, and to which the ink remaining after being discharged from the inkjet head is supplied; and at least one sensing part disposed between the inkjet head and the ink circulation part and sensing a number of the bipolar elements that are discharged through the nozzles.

公开(公告)号：US11817474B2

公开(公告)日：2023-11-14

申请号：US17818345

申请日：2022-08-08

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hyun Min Cho ,  Dae Hyun Kim ,  Jin Oh Kwag ,  Dong Hyun Kim ,  Keun Kyu Song ,  Hyun Deok Im ,  Sung Chan Jo

IPC: H01L27/15 ,  H01L33/38 ,  H01L33/62

CPC classification number: H01L27/156 ,  H01L33/38 ,  H01L33/62

Abstract: 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.

公开(公告)号：US11798926B2

公开(公告)日：2023-10-24

申请号：US17364042

申请日：2021-06-30

Applicant: Samsung Display Co., LTD.

Inventor： An Na Ryu ,  Jin Oh Kwag ,  Dae Hyun Kim

IPC: H01L25/16 ,  H01L27/12 ,  H01L33/62 ,  H01L33/50

CPC classification number: H01L25/167 ,  H01L27/1248 ,  H01L33/62 ,  H01L33/507 ,  H01L2933/0091

Abstract: A display device comprises a first substrate, a conductive layer including a first electrode on the first substrate, an interlayer insulating layer on the conductive layer, a via layer on the interlayer insulating layer and including a hole exposing a part of a top surface of the interlayer insulating layer, a second electrode spaced apart from the hole and on the via layer, light emitting elements inside the hole of the via layer, a first contact electrode electrically connected to the first electrode and a first end of the light emitting elements, and a second contact electrode on the via layer and electrically connected to a second end of the light emitting elements. At least a part of the light emitting elements are placed on an inner wall of the hole.