公开(公告)号：US11961461B2

公开(公告)日：2024-04-16

申请号：US18158347

申请日：2023-01-23

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hyun Joon Kim ,  Kyung Hoon Chung

IPC: G09G3/32 ,  G09G3/12

CPC classification number: G09G3/12 ,  G09G2300/0809 ,  G09G2320/0242

Abstract: A pixel circuit includes: a first transistor including a gate electrode connected to a first node, a source electrode connected to a first power line, and a drain electrode connected to a second power line; a light emitting element connected between the first transistor and the first or second power line; a second transistor connected between a data line and the first node, and including a gate electrode connected to a first scan line; a first capacitor connected between the first node and the source electrode of the first transistor; a third transistor connected between the first node and the first power line, and including a gate electrode connected to a second node; a fourth transistor connected between the second node and the data line, and including a gate electrode connected to a second scan line; and a second capacitor connected between the second node and a first control line.

公开(公告)号：US11908392B2

公开(公告)日：2024-02-20

申请号：US18072507

申请日：2022-11-30

Applicant: Samsung Display Co., LTD.

Inventor： Jun Ki Jeong ,  Hyun Joon Kim ,  Jung Hwan Hwang

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/0852 ,  G09G2320/0233

Abstract: A display device including: a first transistor configured to control a control current based on a voltage of a first node; a second transistor configured to electrically connect a second node that is a first electrode of the first transistor to a first data line in response to a scan write signal; a third transistor configured to control a driving current based on a voltage of a third node; a fourth transistor configured to electrically connect a fourth node that is a first electrode of the third transistor to a second data line in response to the scan write signal; a fifth transistor configured to control the driving current based on a voltage of a fifth node having received the control current; and a light emitting element configured to receive the driving current, wherein the fifth transistor is of a different type from that of the first to fourth transistors.

公开(公告)号：US11790853B2

公开(公告)日：2023-10-17

申请号：US17147534

申请日：2021-01-13

Applicant: Samsung Display Co., LTD.

Inventor： Min Jae Jeong ,  Hyun Joon Kim

IPC: G09G3/3266 ,  G09G3/20

CPC classification number: G09G3/3266 ,  G09G3/2003 ,  G09G2310/0262 ,  G09G2310/0289 ,  G09G2330/12

Abstract: A display device includes: a plurality of first pixels connected to first scan lines and a first data line, a plurality of second pixels connected to second scan lines and the first data line, a plurality of third pixels connected to the first scan lines or the second scan lines and a second data line, and a scan driver including a plurality of stages which supplies scan signals to one of the first scan lines and the second scan lines.

公开(公告)号：US11790841B2

公开(公告)日：2023-10-17

申请号：US18073311

申请日：2022-12-01

Applicant: Samsung Display Co., Ltd.

Inventor： Byung Chang Yu ,  Hyun Joon Kim ,  Hae Min Kim ,  Myung Hoon Park ,  Dong Hoon Lee

IPC: G09G3/32 ,  G09G3/3233

CPC classification number: G09G3/32 ,  G09G3/3233 ,  G09G2300/0852 ,  G09G2310/0267 ,  G09G2310/0275 ,  G09G2320/0233 ,  G09G2330/021

Abstract: A pixel and a display device including the same are disclosed. The pixel includes a light emitting element, first through seventh transistors, and a first capacitor. The first transistor is connected between first and second nodes. The second transistor is connected between a data line and a fourth node and configured to be turned on by a first scan signal. The third transistor is connected between the first node and a third node and configured to be turned on by a second scan signal. The fourth transistor is connected between the fourth node and a third power line and configured to be turned on by a third scan signal. The fifth transistor is connected between the third node and the third power line and configured to be turned on by a fourth scan signal. The sixth transistor is connected between the first node and a fifth node and configured to be turned off by an emission control signal. The seventh transistor is connected between the second node and the second power line and configured to be turned off in response to the emission control signal. The first capacitor is connected between the third and fourth nodes.

公开(公告)号：US11758766B2

公开(公告)日：2023-09-12

申请号：US17929691

申请日：2022-09-03

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hee Rim Song ,  Hyun Joon Kim ,  Hae Min Kim ,  Mee Hye Jung

IPC: G09G3/32 ,  H10K59/121 ,  G09G3/3233 ,  G09G3/3266 ,  G09G3/3283 ,  H10K59/126 ,  H10K59/131 ,  H01L27/12

CPC classification number: H10K59/1213 ,  G09G3/3233 ,  G09G3/3266 ,  G09G3/3283 ,  H10K59/126 ,  H10K59/1216 ,  H10K59/131 ,  G09G2300/0426 ,  G09G2330/02 ,  H01L27/1225

Abstract: A display device may include a plurality of pixels each including a light emitting element. A first scan line and a second scan line, are disposed in each of the pixels. A data line is disposed in each of the pixels. A power line is disposed in each of the pixels. A reference voltage line is disposed in each of the pixels. A first transistor controls a current of the light emitting element. A second transistor is connected between the data line and a first gate electrode of the first transistor. A third transistor is connected between the reference voltage line and a first electrode of the first transistor. A fourth transistor is connected between the power line and a second electrode of the first transistor. The fourth transistor may be a transistor of a type different from that of the first to third transistors.

公开(公告)号：US11705051B2

公开(公告)日：2023-07-18

申请号：US17849277

申请日：2022-06-24

Applicant: Samsung Display Co., LTD.

Inventor： Jung Hwan Hwang ,  Hyun Joon Kim ,  Kye Uk Lee ,  Sang Jin Jeon ,  Jun Ki Jeong

IPC: G09G3/3241 ,  G09G3/36 ,  G09G3/3208 ,  G09G3/3233 ,  G09G3/22

CPC classification number: G09G3/22 ,  G09G3/3208 ,  G09G3/3233 ,  G09G3/3241 ,  G09G3/3648 ,  G09G2330/025 ,  G09G2330/028

Abstract: A display device includes a first pixel driver connected to a sweep line, the first pixel driver generating a control current based on a first data voltage, a second pixel driver connected to a scan control line, the second pixel driver generating a driving current based on a second data voltage and controlling a period for which the driving current flows, based on the control current, and a light-emitting element connected to the second pixel driver to receive the driving current. The first pixel driver includes a first transistor generating the control current based on the first data voltage, a second transistor providing the first data voltage to a first electrode of the first transistor based on a scan write signal, and a first capacitor including a first capacitor electrode connected to a gate electrode of the first transistor, and a second capacitor electrode connected to the sweep line.

公开(公告)号：US11341878B2

公开(公告)日：2022-05-24

申请号：US16821706

申请日：2020-03-17

Applicant: Samsung Display Co., LTD.

Inventor： Hyun Joon Kim ,  Jun Ki Jeong ,  Kyung Hoon Chung ,  Kyung Bae Kim ,  Seung Chan Lee ,  Chong Chul Chai

IPC: G09G3/00

Abstract: A method of testing a display panel including a pixel coupled to first, second, and third power lines, a data line, scan lines, an emission control line, and a test line, the method includes: applying a first power supply voltage to the first power line; applying a test voltage having a turn-on voltage level to the second power line; applying a scan signal having a turn-on voltage level sequentially to the scan lines and an emission control signal having a turn-on voltage level to the emission control line; applying a gate signal to the test line to turn on a test transistor coupled between two electrode of a light emitting element included in the pixel; measuring a sensing voltage output through the data line; and determining whether the pixel is defective, based on a voltage level of the measured sensing voltage.

公开(公告)号：US12294014B2

公开(公告)日：2025-05-06

申请号：US17281500

申请日：2019-06-11

Applicant: Samsung Display Co., Ltd.

Inventor： Chong Chul Chai ,  Hyun Joon Kim ,  Hyun Min Cho ,  Kyung Bae Kim ,  Min Jae Jeong

IPC: H01L27/15 ,  B82B3/00 ,  H01L33/24 ,  H01L33/38 ,  H01L33/40 ,  H01L33/44

Abstract: A light emitting device comprises: a substrate; a first electrode on the substrate, the first electrode having holes, and having inclined surfaces along the peripheries of the holes; second electrodes on the substrate, each of which is in a respective one of the holes of the first electrode; and light emitting elements between the first electrode and the second electrodes, the light-emitting elements being electrically connected to the first electrode and the second electrodes.

公开(公告)号：US12198636B2

公开(公告)日：2025-01-14

申请号：US18313601

申请日：2023-05-08

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hyun Joon Kim ,  Jun Ki Jeong

IPC: G09G3/3266

Abstract: A pixel of a light-emitting display device includes a capacitor, a first transistor, a second transistor including a gate receiving a gate writing signal, a third transistor including a gate receiving a scan signal, a fourth transistor including a gate receiving a gate initialization signal, a fifth transistor including a gate receiving a first emission signal, a sixth transistor including a gate receiving a second emission signal, and a light-emitting diode. The scan signal and the gate writing signal may be provided at a first frequency, and the first emission signal, the second emission signal and the gate initialization signal may be provided at a second frequency higher than the first frequency.

公开(公告)号：US12048214B2

公开(公告)日：2024-07-23

申请号：US18362933

申请日：2023-07-31

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jun Hyun Park ,  Jang Mi Kang ,  Hyun Joon Kim ,  Hae Min Kim ,  Min Jae Jeong

IPC: H10K59/131 ,  G09G3/3233 ,  H10K50/813 ,  H10K59/122 ,  H10K59/35

CPC classification number: H10K59/131 ,  G09G3/3233 ,  H10K50/813 ,  H10K59/122 ,  H10K59/352 ,  G09G2300/0452 ,  G09G2300/0809

Abstract: A light emitting diode display device includes: a pixel circuit; a data line connected to the pixel circuit to transmit a data voltage; an anode on the pixel circuit and the data line; an emission layer on the anode; and a cathode on the emission layer. The anode includes a first anode and a second anode, and the data line extends across the first anode and the second anode.