公开(公告)号：US12008952B2

公开(公告)日：2024-06-11

申请号：US18224452

申请日：2023-07-20

Applicant: Samsung Display Co., LTD.

Inventor： Jin-Wook Yang ,  Yu-Chol Kim ,  Donggyu Lee ,  Jae-Hyeon Jeon

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2310/0216 ,  G09G2310/0267 ,  G09G2330/028

Abstract: A pixel includes: a light-emitting element including an anode and a cathode, a first transistor including a first and a second electrode and a gate electrode connected with a first node, a third transistor connected between the second electrode of the first transistor and the first node and including a gate electrode connected with a first scan line, a sixth transistor connected between the second electrode of the first transistor and the anode and including a gate electrode connected with a first emission line, and a seventh transistor connected between the anode and an initialization voltage line and including a gate electrode connected with a second scan line. During an initialization period, the third, sixth, and seventh transistors are turned on such that an initialization voltage from the initialization voltage line is transferred to the gate electrode of the first transistor.

公开(公告)号：US11948498B2

公开(公告)日：2024-04-02

申请号：US17863893

申请日：2022-07-13

Applicant: Samsung Display Co., Ltd.

Inventor： Jihye Kim ,  Yu-Chol Kim ,  Seongoh Yeom ,  Jakyoung Jin

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/0426 ,  G09G2300/0852 ,  G09G2310/0267 ,  G09G2310/0275 ,  G09G2310/061

Abstract: A display device includes a light-emitting device, a first transistor, and a second transistor connected between the first transistor and the light-emitting device and including a gate electrode which receives the emission control signal. When a driving frequency is a second frequency less than a first frequency, one frame includes an active period and a blank period, and during the active period, a pulse width of the emission control signal has a first value, and during the blank period, the pulse width of the emission control signal has a second value different from the first value.

公开(公告)号：US12094415B2

公开(公告)日：2024-09-17

申请号：US18376760

申请日：2023-10-04

Applicant: Samsung Display Co., Ltd.

Inventor： Jihye Kim ,  Yu-Chol Kim ,  Seongoh Yeom ,  Jakyoung Jin

IPC: G09G3/3233 ,  G09G3/3266 ,  G09G3/3275

CPC classification number: G09G3/3233 ,  G09G3/3266 ,  G09G3/3275 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/043

Abstract: A display device comprises a display panel including a pixel, and a panel driver configured to receive input image data in a variable frame frequency in order to drive the display panel based on the input image data. A frame period for the display panel is divided into at least one scan period and at least one or more hold periods, and a time during which the pixel performs an anode initialization operation in each of the hold periods is longer than a time during which the pixel performs the anode initialization operation in the scan period.

公开(公告)号：US12033566B2

公开(公告)日：2024-07-09

申请号：US18127341

申请日：2023-03-28

Applicant: Samsung Display Co., Ltd.

Inventor： Jin-Wook Yang ,  Yu-Chol Kim ,  Sehyuk Park ,  Donggyu Lee ,  Jae-Hyeon Jeon

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2310/0267 ,  G09G2310/0275 ,  G09G2310/08

Abstract: A display device includes: a pixel electrically connected to a data line, a write scan line, an initialization scan line, a compensation scan line, a transmission control line, and an emission control line; a first driving circuit configured to provide a write scan signal to the write scan line and a second driving circuit configured to receive a plurality of clock signals, each of which has a time duration of one unit horizontal period and provide an initialization scan signal, a compensation scan signal, a transmission control signal, and an emission control signal to the initialization scan line, the compensation scan line, the transmission control line, and the emission control line, respectively. Each of the initialization scan signal and the compensation scan signal has an activation interval of one unit horizontal periods or more.

公开(公告)号：US11961463B2

公开(公告)日：2024-04-16

申请号：US18196137

申请日：2023-05-11

Applicant: Samsung Display Co., LTD.

Inventor： Jin-Wook Yang ,  Yu-Chol Kim ,  Donggyu Lee ,  Jaekeun Lim ,  Jae-Hyeon Jeon

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2310/0216 ,  G09G2310/0267 ,  G09G2330/028

Abstract: A pixel connected to a first scan line includes a light-emitting element including an anode and a cathode, a first transistor including a first electrode, a second electrode, and a gate electrode connected to a first node, a first capacitor connected between the first node and a second node, a second transistor connected between the second electrode of the first transistor and the first node including a gate electrode connected to the first scan line, a third transistor including a first electrode, a second electrode connected to the second node, and a gate electrode connected to the first scan line, and a fourth transistor including a first electrode connected to a first driving voltage line, a second electrode connected to the first electrode of the first transistor, and a gate electrode connected to the first scan line.

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：US11295662B2

公开(公告)日：2022-04-05

申请号：US17191588

申请日：2021-03-03

Applicant: Samsung Display Co., Ltd.

Inventor： Jae-Hyeon Jeon ,  Yu-Chol Kim ,  Jihye Kim ,  Jin-Wook Yang ,  Donggyu Lee ,  Jakyoung Jin

IPC: G09G3/3233 ,  G09G3/32

Abstract: A display device includes a display panel including a pixel, a voltage line supplying a power voltage to the pixel, and a reference voltage line supplying one of a reference voltage and the power voltage to the pixel; a mode selector configured to output one of a first selection signal and a second selection signal according to an operation mode of the display panel; and a switch configured to provide the reference voltage or the power voltage to the reference voltage line in response to one of the first selection signal and the second selection signal.

公开(公告)号：US11817056B2

公开(公告)日：2023-11-14

申请号：US17985550

申请日：2022-11-11

Applicant: Samsung Display Co., Ltd.

Inventor： Jihye Kim ,  Yu-Chol Kim ,  Seongoh Yeom ,  Jakyoung Jin

IPC: G09G3/3233 ,  G09G3/3266 ,  G09G3/3275

CPC classification number: G09G3/3233 ,  G09G3/3266 ,  G09G3/3275 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/043

Abstract: A display device comprises a display panel including a pixel, and a panel driver configured to receive input image data in a variable frame frequency in order to drive the display panel based on the input image data. A frame period for the display panel is divided into at least one scan period and at least one or more hold periods, and a time during which the pixel performs an anode initialization operation in each of the hold periods is longer than a time during which the pixel performs the anode initialization operation in the scan period.

公开(公告)号：US11508320B2

公开(公告)日：2022-11-22

申请号：US17471217

申请日：2021-09-10

Applicant: Samsung Display Co., Ltd.

Inventor： Jihye Kim ,  Jakyoung Jin ,  Yu-Chol Kim ,  Jin-Wook Yang

IPC: G09G3/3291 ,  G09G3/3266 ,  G09G3/3233 ,  G09G3/3208

Abstract: A pixel of an OLED display device includes a first capacitor, a second capacitor, a first transistor configured to generate a driving current, a second transistor configured to transfer a data voltage to a first node, a third transistor configured to diode-connect the first transistor, a fourth transistor configured to transfer an initialization voltage to the second node, a fifth transistor configured to transfer a reference voltage to the first node, a sixth transistor configured to couple a drain of the first transistor and an anode of an organic light emitting diode, a seventh transistor configured to transfer the initialization voltage to the anode of the organic light emitting diode, an eighth transistor configured to transfer the initialization voltage to the drain of the first transistor, and the organic light emitting diode.

公开(公告)号：US10818219B2

公开(公告)日：2020-10-27

申请号：US16052059

申请日：2018-08-01

Applicant: SAMSUNG DISPLAY CO, LTD.

Inventor： Yu-Chol Kim ,  Keunoh Kang ,  Sujin Lee ,  Min-Soo Choi

IPC: G09G3/20

Abstract: A display apparatus includes a display panel, a gate driver and a data driver. The display panel displays an image. The gate driver outputs gate signals to the display panel. The data driver outputs data voltages to the display panel. The data driver includes a plurality of data driving circuits. At least two data driving circuits among the data driving circuits have different turn off timings or different turn on timings in a vertical blank period.