公开(公告)号：US11482174B2

公开(公告)日：2022-10-25

申请号：US16903295

申请日：2020-06-16

Applicant: Samsung Display Co., Ltd.

Inventor： Yu-Chol Kim ,  Jin-Wook Yang ,  Ji Hye Kim ,  Young Ha Sohn ,  Jae-Hyeon Jeon

IPC: G09G3/325 ,  G09G3/3266 ,  G09G3/3291

Abstract: An embodiment provides a display device including: a light emitting diode; a driving transistor configured to supply a current to the light emitting diode; a switching transistor having an input electrode connected to a data line; and a voltage transmitting capacitor disposed between an output electrode of the switching transistor and a gate electrode of the driving transistor, wherein a data voltage applied to the data line may be transmitted to the gate electrode of the driving transistor through the voltage transmitting capacitor, and the data voltage may have a data voltage value from which a voltage variation variable is removed based on leakage of the switching transistor.

公开(公告)号：US11922866B1

公开(公告)日：2024-03-05

申请号：US18133593

申请日：2023-04-12

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Young Ha Sohn ,  Se Hyuk Park ,  Jin Wook Yang ,  Dong Gyu Lee ,  Jae Hyeon Jeon

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/0426 ,  G09G2310/0267 ,  G09G2310/0275 ,  G09G2310/0278 ,  G09G2320/0247 ,  G09G2330/021

Abstract: A pixel includes: a first transistor including a gate electrode electrically connected to a first node, a second node to which a first power voltage for driving the light emitting element is applied, and a third node electrically connected to the light emitting element; a first emission control transistor having an on-off timing controlled by a first emission control signal; and a second emission control transistor having an on-off timing controlled by a second emission control signal. A time interval exists between a time at which the first emission control signal having a turn-on level is input such that a voltage of the second node is dropped from a bias voltage having a voltage level higher than a voltage level of the first power voltage and a time at which the second emission control signal having a turn-on level is input.

公开(公告)号：US11715406B2

公开(公告)日：2023-08-01

申请号：US17706519

申请日：2022-03-28

Applicant: Samsung Display Co., LTD.

Inventor： Se Hyuk Park ,  Jin Young Roh ,  Woo Mi Bae ,  Hae Kwan Seo ,  Young Ha Sohn ,  Jin Wook Yang

IPC: G09G3/20

CPC classification number: G09G3/2003 ,  G09G2300/0452 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0297 ,  G09G2310/08 ,  G09G2330/023

Abstract: A display device includes: a data driver for supplying a data signal to output lines; a demultiplexer connected to each of the output lines, the demultiplexer to supply the data signal supplied to each output line to a first data line and a second data line; first pixels disposed in a (2j−1)-th column and a (2k−1)-th row, the first pixels being connected to the first data line, wherein j and k are positive integers; second pixels disposed in the (2j−1)-th column and a (2k)-th row, the second pixels being connected to the second data line; third pixels disposed in a (2j)-th column and the (2k−1)-th row, the third pixels being connected to the first data line; and fourth pixels disposed in the (2j)-th column and the (2k)-th row, the fourth pixels being connected to the second data line.

公开(公告)号：US11094263B2

公开(公告)日：2021-08-17

申请号：US16890328

申请日：2020-06-02

Applicant: Samsung Display Co., Ltd.

Inventor： Yu Chol Kim ,  Jin Wook Yang ,  Ji Hye Kim ,  Young Ha Sohn ,  Jae Hyeon Jeon

IPC: G09G3/3258 ,  G09G3/3291 ,  G09G3/3266

Abstract: A display device driving method includes: providing a reference voltage for compensating a threshold voltage of a driving transistor in a pixel; and providing a data signal to the pixel, wherein providing the reference voltage, and providing the data signal to the pixel are performed in a first frame period, and a second frame period successive to the first frame period, wherein the display device driving method further comprises providing a compensation signal generated by comparing a data signal with a reference voltage provided in a previous frame period of each frame period to the pixel before providing the reference voltage is ended.

公开(公告)号：US11651728B2

公开(公告)日：2023-05-16

申请号：US17724695

申请日：2022-04-20

Applicant: Samsung Display Co., LTD.

Inventor： Young Ha Sohn ,  Se Hyuk Park ,  Hae Kwan Seo ,  Jin Wook Yang

IPC: G09G3/32 ,  G09G3/00

CPC classification number: G09G3/32 ,  G09G3/006 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/08 ,  G09G2320/0295 ,  G09G2320/045 ,  G09G2330/021 ,  G09G2330/12

Abstract: A pixel includes a light emitting element, a first transistor including a gate electrode electrically connected to a first node, a second transistor including a gate electrode connected to a first scan line, a third transistor including a gate electrode connected to the first scan line, a fourth transistor including a gate electrode connected to a second scan line, a fifth transistor including a gate electrode electrically connected to a third scan line, an sixth transistor including a gate electrode electrically connected to the third scan line, a resistor electrically connected in parallel with the sixth transistor between the second node and the anode of the light emitting element, and an amplifier having a non-inverting terminal and an inverting terminal electrically connected to ends of the resistor, respectively.

公开(公告)号：US20230018362A1

公开(公告)日：2023-01-19

申请号：US17706519

申请日：2022-03-28

Applicant: Samsung Display Co., LTD.

Inventor： Se Hyuk Park ,  Jin Young Roh ,  Woo Mi Bae ,  Hae Kwan Seo ,  Young Ha Sohn ,  Jin Wook Yang

IPC: G09G3/20

Abstract: A display device includes: a data driver for supplying a data signal to output lines; a demultiplexer connected to each of the output lines, the demultiplexer to supply the data signal supplied to each output line to a first data line and a second data line; first pixels disposed in a (2j−1)-th column and a (2k−1)-th row, the first pixels being connected to the first data line, wherein j and k are positive integers; second pixels disposed in the (2j−1)-th column and a (2k)-th row, the second pixels being connected to the second data line; third pixels disposed in a (2j)-th column and the (2k−1)-th row, the third pixels being connected to the first data line; and fourth pixels disposed in the (2j)-th column and the (2k)-th row, the fourth pixels being connected to the second data line.

公开(公告)号：US11263976B2

公开(公告)日：2022-03-01

申请号：US17027876

申请日：2020-09-22

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jin Wook Yang ,  Ji Hye Kim ,  Young Ha Sohn ,  Dong Gyu Lee ,  Jae Hyeon Jeon

IPC: G09G3/3266 ,  G09G3/3233

Abstract: A display device includes a first transistor including a first electrode connected to a first power line, a second electrode connected to a third node, and a gate electrode connected to a first node, a first capacitor formed between the first power line and a second node, a second capacitor formed between the first node and the second node, an emission transistor including a first electrode connected to the third node, a second electrode, and a gate electrode connected to an emission control line, and a light emitting element connected to the second electrode of the emission transistor and a second power line.

公开(公告)号：US12154485B2

公开(公告)日：2024-11-26

申请号：US18133615

申请日：2023-04-12

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Se Hyuk Park ,  Hong Soo Kim ,  Young Ha Sohn ,  Jin Wook Yang ,  Dong Gyu Lee ,  Jae Hyeon Jeon

IPC: G09G3/32

Abstract: A pixel includes: a light emitting element; a first transistor including a gate electrode electrically connected to a first node, a second node to which a first power voltage for driving the light emitting element is to be applied, and a third node electrically connected to the light emitting element; and a bias control transistor configured to be controlled in operating timing thereof by a bias control signal, and configured to switch electrical connection between the second node and a bias power line for transmitting a bias voltage. In one frame period, a voltage level of the bias voltage to be applied to the second node sequentially increases.

公开(公告)号：US11798478B2

公开(公告)日：2023-10-24

申请号：US17840543

申请日：2022-06-14

Applicant: Samsung Display Co., LTD.

Inventor： Se Hyuk Park ,  Jin Young Roh ,  Woo Mi Bae ,  Hae Kwan Seo ,  Young Ha Sohn ,  Jin Wook Yang

IPC: G09G3/3241 ,  G09G3/20

CPC classification number: G09G3/3241 ,  G09G3/2074 ,  G09G2300/0413 ,  G09G2300/0426

Abstract: A display device includes: a data driver for supplying a data signal to each of a plurality of data lines; and a pixel unit including a plurality of sub-pixels. The pixel unit further includes one dummy data line disposed separate from a data line of a first column among the data lines. The data line of the first column is connected to sub-pixels disposed on odd-numbered pixel rows among sub-pixels disposed on a first pixel column, and is connected to sub-pixels disposed on even-numbered pixel rows among sub-pixels disposed on a third pixel column. The dummy data line is connected to sub-pixels disposed on the even-numbered pixel rows among the sub-pixels disposed on the first pixel column.

公开(公告)号：US11341889B2

公开(公告)日：2022-05-24

申请号：US17197302

申请日：2021-03-10

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hae Kwan Seo ,  Woo Mi Bae ,  Young Ha Sohn

IPC: G09G3/20

Abstract: A display device includes a pixel unit including first and second pixel columns arranged alternately along a first direction, and a third pixel column arranged between the first and the second pixel columns, a timing controller generating first or second image data by converting input image data, and a data driver generating a data voltage corresponding to the first or second image data and supplying the data voltage to the pixel unit. The first and second pixel columns each include first and second color pixels arranged alternately along a second direction, the third pixel column includes a third color pixel arranged along the second direction, and the timing controller compares a difference value between a grayscale value of the first color pixel and a grayscale value of the second color pixel with a reference value, and generates the second image data based on a comparing result.