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：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.

公开(公告)号：US11972726B2

公开(公告)日：2024-04-30

申请号：US17990813

申请日：2022-11-21

Applicant: Samsung Display Co., LTD.

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

IPC: G09G3/3233 ,  H10K59/131

CPC classification number: G09G3/3233 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2320/0626 ,  H10K59/131

Abstract: A light emitting display device includes a light emitting diode including a first electrode and a second electrode to which a driving voltage is applied, a driving transistor, a second transistor receiving a data voltage and connected to a D node, a storage capacitor connected to the driving transistor and an N node, a hold capacitor connected to the D node and the N node, a third transistor connected to the D node and the driving transistor, a fourth transistor receiving a reference voltage and connected to the driving transistor, a fifth transistor connected to the driving transistor and the N node, a sixth transistor receiving a driving low voltage and connected to the driving transistor, a seventh transistor receiving an initialization voltage and connected the driving transistor, and an eighth transistor connected to the driving transistor and the first electrode of the light emitting diode.

公开(公告)号：US11961822B2

公开(公告)日：2024-04-16

申请号：US18062927

申请日：2022-12-07

Applicant: Samsung Display Co., LTD.

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

IPC: H01L25/065 ,  G09G3/3233 ,  H01L21/66 ,  H01L23/00 ,  H01L25/075 ,  H01L27/12

CPC classification number: H01L25/0655 ,  G09G3/3233 ,  H01L25/0753 ,  H01L27/1248 ,  H01L27/127 ,  G09G2300/026 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2300/0852 ,  H01L22/22 ,  H01L22/32 ,  H01L24/05 ,  H01L24/16 ,  H01L27/1218 ,  H01L2224/05573 ,  H01L2224/16227 ,  H01L2924/12041

Abstract: A display device includes a substrate including a plurality of emission areas respectively corresponding to a plurality of subpixels for displaying an image, a plurality of light emitting elements respectively located in the plurality of emission areas of a first surface of the substrate and respectively corresponding to the plurality of subpixels, a first planarization layer on the first surface of the substrate and covering the plurality of light emitting elements, and an array layer on the first planarization layer.

公开(公告)号：US11922871B2

公开(公告)日：2024-03-05

申请号：US17388086

申请日：2021-07-29

Applicant: Samsung Display Co., LTD.

Inventor： Hae Min Kim ,  Min Jae Jeong ,  Jang Mi Kang ,  Hyun Joon Kim ,  Jun Hyun Park ,  Cheol-Gon Lee

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2300/0842 ,  G09G2310/0243 ,  G09G2310/0281 ,  G09G2310/08

Abstract: An emissive display device includes a display area which includes a plurality of pixels, and a driver disposed at a side of the display area, where the driver includes at least two emission signal stages disposed in one row, and an input signal line connected to the emission signal stages, and the at least two emission signal stages are connected to the same input signal line.