公开(公告)号：US10650213B2

公开(公告)日：2020-05-12

申请号：US15890581

申请日：2018-02-07

Applicant: Samsung Display Co., Ltd.

Inventor： Keum Dong Jung ,  Ki Seo Kim ,  Il Nam Kim ,  Jae-Kyoung Kim ,  Kyung Tea Park ,  Jong In Baek

IPC: G06K9/00

Abstract: A fingerprint sensing device includes: a fingerprint sensor including scan lines and initialization lines extending in a first direction and arranged in a second direction, sensing lines extending in the second direction and arranged in the first direction, and sensing pixels connected to the scan lines, the initialization lines, and the sensing lines and disposed in a matrix configuration; a scan driver configured to apply an enable-level initialization signal to a-numbered sensing pixel rows while applying a disable-level initialization signal to b-numbered sensing pixel rows, and applying an enable-level scan signal to one sensing pixel row in the b-numbered sensing pixel rows; and a sensing driver configured to receive a sensing signal from the sensing pixel row to which the scan signal is applied through the sensing lines, wherein the a and b are positive numbers that are greater than 2.

公开(公告)号：US20180246387A1

公开(公告)日：2018-08-30

申请号：US15959689

申请日：2018-04-23

Applicant: Samsung Display Co. Ltd.

Inventor： Keum Dong Jung ,  Seung Hwan Moon ,  Seong Young Lee

IPC: G02F1/1362 ,  G09G3/36 ,  G02F1/133 ,  G02F1/1343

CPC classification number: G02F1/136286 ,  G02F1/13306 ,  G02F1/136213 ,  G02F2001/134345 ,  G09G3/3648 ,  G09G2300/0443 ,  G09G2300/0814 ,  G09G2320/028

Abstract: A liquid crystal display includes a display panel including first and second subpixels, where the first subpixel includes a first switching device including a first electrode connected to the j-th data line, a second electrode connected to a first subpixel electrode and a gate electrode connected to an i-th gate line, the second subpixel includes a second switching device including a first electrode connected to a j-th data line, a second electrode connected to a second subpixel electrode and a gate electrode connected to the i-th gate line, a third switching device including a first electrode connected to the second subpixel electrode and a gate electrode connected to the i-th gate line, and a fourth switching device including a first electrode connected to the j-th data line, a second electrode connected to the first electrode of the third switching device and a gate electrode connected to the i-th gate line.

公开(公告)号：US12125426B2

公开(公告)日：2024-10-22

申请号：US18210960

申请日：2023-06-16

Applicant: SAMSUNG DISPLAY CO., LTD. ,  KOREAN ADVANCE INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Hyung Gun Ma ,  Gyu Wan Lim ,  Gyeong Gu Kang ,  Hyun Sik Kim ,  Keum Dong Jung ,  Moon Jae Jeong

IPC: G09G3/20 ,  G06F3/044 ,  G09G3/3208 ,  H10K59/40

CPC classification number: G09G3/20 ,  G06F3/044 ,  G09G3/3208 ,  G09G2300/0828 ,  G09G2300/0852 ,  G09G2300/0871 ,  G09G2310/027 ,  G09G2310/0291 ,  G09G2330/028 ,  H10K59/40

Abstract: A data driving circuit includes: a resistor string in which a plurality of resistors are connected in series; and a plurality of data channels connected to a high voltage node, intermediate voltage nodes, and a low voltage node of the resistor string and configured to convert a digital data signal into an analog data voltage. Each of the plurality of data channels includes: a main digital-to-analog converter connected to the high voltage node, the intermediate voltage nodes, and the low voltage node, a multiplier connected to an output terminal of the main digital-to-analog converter, a sub digital-to-analog converter connected to some of the high voltage node, the intermediate voltage nodes, and the low voltage node, and a voltage synthesizer connected to an output terminal of the multiplier and an output terminal of the sub digital-to-analog converter.

公开(公告)号：US12067803B2

公开(公告)日：2024-08-20

申请号：US18177968

申请日：2023-03-03

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Soo Jung Lee ,  Keum Dong Jung ,  Yu Na Kim ,  Il Nam Kim

IPC: G06V40/13 ,  G06V10/75

CPC classification number: G06V40/1318 ,  G06V40/1306 ,  G06V10/751

Abstract: There are provided a fingerprint sensor and a display device including the same. The fingerprint sensor includes a base substrate in which a first sensing region and a second sensing region are defined on a plane, first photo sensors disposed on the first sensing region of the base substrate, and second photo sensors disposed on the second sensing region of the base substrate. The first sensing region has an area larger than that of the second sensing region, and the first photo sensor has a width wider than that of the second photo sensor.

公开(公告)号：US11869438B2

公开(公告)日：2024-01-09

申请号：US17671969

申请日：2022-02-15

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hyung Gun Ma ,  Ji Woong Kim ,  Jun Yong Song ,  Seong Joo Lee ,  Keum Dong Jung ,  Sang Hyun Heo

IPC: G09G3/32 ,  G09G3/3266 ,  H01L25/18 ,  G09G3/3275

CPC classification number: G09G3/3266 ,  H01L25/18 ,  G09G3/3275 ,  G09G2300/043 ,  G09G2300/0426 ,  G09G2300/0814 ,  G09G2310/0202 ,  G09G2310/0286 ,  G09G2310/0289 ,  G09G2310/0291 ,  G09G2320/0219

Abstract: A display device includes a display panel including pixels connected to scan lines and data lines, and connection line connected to the scan lines, and a scan driver which drives scan lines. The scan driver includes a scan signal output circuit which outputs a first output signal as a scan signal to a first output line and outputs a second output signal to a second output line, a signal distribution circuit which outputs the first output signal to a first or third connection line and outputs the second output signal to a second or fourth connection line in response to first and second distribution control signals, and a scan-off circuit which outputs gate-off level to at least one of the scan lines in response to first and second scan-off control signals.

公开(公告)号：US11837132B2

公开(公告)日：2023-12-05

申请号：US17500875

申请日：2021-10-13

Applicant: Samsung Display Co., Ltd. ,  Korea Advanced Institute of Science and Technology

Inventor： Seong Joo Lee ,  Seok Tae Koh ,  Gyeong Gu Kang ,  Oh Jo Kwon ,  Hyun Sik Kim ,  Gyu Wan Lim ,  Keum Dong Jung

IPC: G09G3/20

CPC classification number: G09G3/20 ,  G09G2300/0426 ,  G09G2300/0809 ,  G09G2300/0828 ,  G09G2310/0243 ,  G09G2310/0272 ,  G09G2310/0291 ,  G09G2310/08

Abstract: An output buffer is disclosed that includes: a buffer circuit that outputs an output signal to an output terminal based on a first input signal provided to a first input terminal and a second input signal provided to a second input terminal; and a current supply circuit that is connected in parallel to the buffer circuit, and provides an auxiliary current to the output terminal based on the first input signal and the second input signal.

公开(公告)号：US11659756B2

公开(公告)日：2023-05-23

申请号：US17520706

申请日：2021-11-07

Applicant: Samsung Display Co., Ltd.

Inventor： Yu Na Kim ,  Soo Jung Lee ,  Keum Dong Jung

IPC: H01L27/32 ,  G06F3/044 ,  A61B5/00 ,  G06F3/041 ,  H04M1/02

CPC classification number: H01L27/323 ,  A61B5/441 ,  G06F3/0412 ,  G06F3/0445 ,  H04M1/0266 ,  H04M2250/12 ,  H04M2250/22

Abstract: A sensor unit including a plurality of driving electrodes, and a plurality of sensing electrodes, in which a first unit sensor is defined by R driving electrodes among the plurality of driving electrodes and S sensing electrodes among the plurality of sensing electrodes in a first driving mode, a second unit sensor is defined by P driving electrodes among the plurality of driving electrodes and Q sensing electrodes among the plurality of sensing electrodes in a second driving mode, P, Q, R and S are integers equal to or greater than 1, and R is smaller than P, and S is smaller than Q.

公开(公告)号：US11620847B2

公开(公告)日：2023-04-04

申请号：US17370206

申请日：2021-07-08

Applicant: SAMSUNG DISPLAY CO., LTD.

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

IPC: G06V40/13 ,  G06V40/12

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：US09983453B2

公开(公告)日：2018-05-29

申请号：US14994988

申请日：2016-01-13

Applicant: Samsung Display Co. Ltd.

Inventor： Keum Dong Jung ,  Seung Hwan Moon ,  Seong Young Lee

IPC: G09G3/36 ,  G02F1/1362 ,  G02F1/133 ,  G02F1/1343

CPC classification number: G02F1/136286 ,  G02F1/13306 ,  G02F1/136213 ,  G02F2001/134345 ,  G09G3/3648 ,  G09G2300/0443 ,  G09G2300/0814 ,  G09G2320/028

Abstract: A liquid crystal display includes a display panel including first and second subpixels, where the first subpixel includes a first switching device including a first electrode connected to the j-th data line, a second electrode connected to a first subpixel electrode and a gate electrode connected to an i-th gate line, the second subpixel includes a second switching device including a first electrode connected to a j-th data line, a second electrode connected to a second subpixel electrode and a gate electrode connected to the i-th gate line, a third switching device including a first electrode connected to the second subpixel electrode and a gate electrode connected to the i-th gate line, and a fourth switching device including a first electrode connected to the j-th data line, a second electrode connected to the first electrode of the third switching device and a gate electrode connected to the i-th gate line.

公开(公告)号：US12086345B2

公开(公告)日：2024-09-10

申请号：US18103591

申请日：2023-01-31

Applicant: Samsung Display Co., LTD.

Inventor： Keum Dong Jung ,  Hyoung Wook Jang

IPC: G06F3/041 ,  G06F3/044 ,  G06V40/13

CPC classification number: G06F3/0416 ,  G06F3/0445 ,  G06F3/0446 ,  G06V40/1306 ,  G06F2203/04111

Abstract: A sensing panel includes a touch sensor that obtains information of a touch input in a sensing area, and a biometric sensor that obtains biometric information in a biometric sensing area. The touch sensor includes sensing pattern layers in the sensing area. The sensing pattern layers include cell electrodes and bridge electrodes electrically connecting the cell electrodes. The biometric sensor includes biometric sensing pattern layers in the biometric sensing area and trace lines electrically connected to the biometric sensing pattern layers. The trace lines and at least a portion of the bridge electrodes are disposed on a same layer. The trace lines bypass the bridge electrodes in a plan view.