公开(公告)号：US11436979B2

公开(公告)日：2022-09-06

申请号：US16505708

申请日：2019-07-09

Applicant: Samsung Display Co., Ltd.

Inventor： Sung Hwan Kim ,  Sang Moo Choi ,  Dae Hyun Kim ,  Soo Hee Oh ,  Dong Sun Lee

IPC: G09G3/3266

Abstract: A pixel circuit includes: an organic light emitting diode (OLED); a first transistor having first and second electrodes and a first gate electrode; a second transistor connected between a data line and the first electrode, controlled by a first scan line; a third transistor connected between the second electrode and the a electrode of the first transistor, controlled by the first scan line; a fourth transistor connected between the first gate electrode and a first initialization voltage line, controlled by a second scan line; a fifth transistor connected between a power line and first electrode, controlled by a first emission line; a sixth transistor connected between the second electrode and the OLED and controlled by a second emission line; and a storage capacitor connected between the first gate electrode and the power line, wherein the first emission line and the second emission line are located at different nodes.

公开(公告)号：US11417284B2

公开(公告)日：2022-08-16

申请号：US17467502

申请日：2021-09-07

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Sung Hwan Kim ,  Wook Lee ,  Hayong Jung

IPC: G09G3/3291 ,  H03M1/36

Abstract: A sensing circuit includes a first input selecting circuit connected to a first sensing line and a second sensing line, a first path setting circuit that sets a path of a first sensing signal received from the first sensing line or a path of a second sensing signal received from the second sensing line, a second path setting circuit that sets a path of a sensing reference voltage, a first switch matrix connected to the first path setting circuit and the second path setting circuit, a first mode setting circuit connected to a first output terminal of the first switch matrix, a first common sensing amplifier connected to the first mode setting circuit, a second mode setting circuit connected to a second output terminal of the first switch matrix, and a second common sensing amplifier connected to the second mode setting circuit.

公开(公告)号：US11238781B2

公开(公告)日：2022-02-01

申请号：US16903454

申请日：2020-06-17

Applicant: Samsung Display Co., Ltd.

Inventor： Sung Hwan Kim

IPC: G09G3/20 ,  G09G3/32

Abstract: A display device may include: a first pixel coupled to a first scan line, a first data line, and a first sensing line; a second pixel coupled to the first scan line, a second data line, and a second sensing line; a first sensing channel corresponding to the first pixel and including a first sampling capacitor; and a second sensing channel corresponding to the second pixel and including a second sampling capacitor. During a first period, the first sensing channel may store a first sampling signal in the first sampling capacitor while the first sensing line is coupled to the first sensing channel, and the second sensing channel may store a second sampling signal in the second sampling capacitor while the second sensing line is disconnected from the second sensing channel.

公开(公告)号：US11157711B2

公开(公告)日：2021-10-26

申请号：US16712875

申请日：2019-12-12

Applicant: Samsung Display Co., Ltd.

Inventor： Jae Hyung Jo ,  Sung Hwan Kim ,  Jung Hak Kim

IPC: G02B7/02 ,  G06K9/00

Abstract: A display device includes: a display panel including a display area; a fingerprint sensor disposed under the display panel overlapping the display area, the fingerprint sensor including: an optical lens; a lens frame disposed under the optical lens; an image sensor disposed under the lens frame and exposed toward the optical lens through an opening formed in the lens frame; and an adhesive layer disposed between the lens frame and the display panel and surrounding the optical lens in a plan view, and attaching the lens frame and the display panel to each other; and a lens guide disposed between the adhesive layer and the optical lens in the plan view, and configured to maintain a distance between a lower surface of the display panel and an upper surface of the optical lens, the lens guide protruding from an upper surface of the lens frame toward the display panel.

公开(公告)号：US11087695B2

公开(公告)日：2021-08-10

申请号：US16725288

申请日：2019-12-23

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Sung Hwan Kim ,  Chul Kyu Kang ,  Hyun-Chol Bang ,  Soo Hee Oh ,  Dong Sun Lee

IPC: G09G3/3291 ,  G09G3/3266 ,  H01L27/32

Abstract: A display device includes: scan, control, and emission control signal lines, signals transmitted thereby being different from one another; data and driving voltage lines; a first transistor including a first gate electrode and first source and drain; a second transistor including a second gate electrode connected to a first scan line, a second source connected to a first data line, and a second drain connected to the first source; a light-emitting element; a control transistor including a control gate electrode connected to a first control line and between the driving voltage line and the first source or the light-emitting element and the first drain; and an emission control transistor in series between the light-emitting element and the control transistor, the control transistor and the first transistor, or the driving voltage line and the control transistor, and an emission control gate electrode connected to the emission control signal line.

公开(公告)号：US10853618B2

公开(公告)日：2020-12-01

申请号：US16447336

申请日：2019-06-20

Applicant: Samsung Display Co., Ltd.

Inventor： Gwang Bum Ko ,  Do Ik Kim ,  Seung Hwan Chung ,  Sung Hwan Kim

IPC: G06K9/00 ,  G02B19/00 ,  H01L31/0232 ,  H01L27/15 ,  H01L31/153 ,  F21V8/00 ,  H01L27/32 ,  G02B6/08 ,  G02B3/00 ,  G02B5/00

Abstract: A display device with a display panel including a display area and a plurality of pixels arranged in the display area, a photosensor layer including a sensing area overlapping the display area and a plurality of photosensors arranged in the sensing area, a light-guiding layer arranged between the display panel and the photosensor layer, the light-guiding layer includes a plurality of light-transmission holes corresponding to the plurality of photosensors, wherein the light-guiding layer includes a transparent tube bundle comprising a plurality of transparent tubes forming the light-transmission holes.

公开(公告)号：US10417477B2

公开(公告)日：2019-09-17

申请号：US15968646

申请日：2018-05-01

Applicant: Samsung Display Co., Ltd.

Inventor： Gwang Bum Ko ,  Do Ik Kim ,  Seung Hwan Chung ,  Sung Hwan Kim

IPC: H01L27/00 ,  G06K9/00 ,  G02B19/00 ,  H01L31/0232 ,  H01L27/15 ,  H01L31/153 ,  F21V8/00 ,  H01L27/32 ,  G02B6/08 ,  G02B3/00 ,  G02B5/00

Abstract: A display device with a display panel including a display area and a plurality of pixels arranged in the display area, a photosensor layer including a sensing area overlapping the display area and a plurality of photosensors arranged in the sensing area, a light-guiding layer arranged between the display panel and the photosensor layer and configured to include a plurality of light-transmission holes corresponding to the photosensors, respectively, and a light-condensing layer arranged between the display panel and the photosensor layer to overlap the light-guiding layer.

公开(公告)号：US20190179471A1

公开(公告)日：2019-06-13

申请号：US16196168

申请日：2018-11-20

Applicant: Samsung Display Co., Ltd

Inventor： Do Ik Kim ,  Gwang Bum Ko ,  Sung Hwan Kim

IPC: G06F3/041 ,  H01L27/32 ,  H01L51/52 ,  H01L41/113

Abstract: A display device that senses externally applied pressure and a change in the resonant frequency of a piezoelectric element. The display device includes a piezoelectric sensor layer including a piezoelectric sensor; and a display panel disposed on the piezoelectric sensor layer. The piezoelectric sensor includes: a piezoelectric element having a first electrode, a second electrode facing the first electrode, and a piezoelectric material disposed between the first electrode and the second electrode; an alternating current (AC) voltage generator connected to the first electrode and applies a voltage having a resonance frequency to the piezoelectric element. A sensing circuit connected to the second electrode is configured to measure a change in impedance of the piezoelectric element.

公开(公告)号：US10008143B2

公开(公告)日：2018-06-26

申请号：US15092466

申请日：2016-04-06

Applicant: Samsung Display Co., Ltd.

Inventor： Jun Hyun Park ,  Keum Nam Kim ,  Sung Hwan Kim ,  Kyoung Ju Shin

IPC: G09G5/00 ,  G09G3/20

CPC classification number: G09G3/20 ,  G09G2310/0267 ,  G09G2310/0286

Abstract: In a scan driver including a plurality of stages configured to supply scan signals to scan lines, the scan driver includes: an i−1th stage configured to supply an i−1th scan signal to an i−1th scan line while controlling a node Qi−1 (i is a natural number) in response to a first clock signal, a third clock signal, and a control voltage; an ith stage configured to supply an ith scan signal to an ith scan line while controlling a node Qi in response to a second clock signal, a fourth clock signal, and the control voltage; and a controller connected to the i−1th stage and the ith stage, and configured to supply the control voltage.

公开(公告)号：US09991296B2

公开(公告)日：2018-06-05

申请号：US15617205

申请日：2017-06-08

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Se Hyoung Cho ,  Il Gon Kim ,  Sung Hwan Kim ,  Mee Hye Jung

IPC: H01L29/04 ,  H01L29/10 ,  H01L31/00 ,  H01L27/12 ,  G09G3/36 ,  H01L29/417 ,  H01L29/423

CPC classification number: H01L27/1288 ,  G09G3/3648 ,  G09G2300/0426 ,  G09G2320/0285 ,  G09G2360/16 ,  H01L27/1222 ,  H01L27/124 ,  H01L29/41733 ,  H01L29/42384

Abstract: A liquid crystal display includes a first pixel and a second pixel that extend in a data line direction. The first and second pixels are connected to a same data line, and the first pixel is closer to a data driver than the second pixel. A channel width of a thin film transistor of the first pixel is less than a channel width of a thin film transistor of the second pixel.