公开(公告)号：US10902780B2

公开(公告)日：2021-01-26

申请号：US16402169

申请日：2019-05-02

Applicant: Samsung Display Co., Ltd.

Inventor： Jeon Kyoo Kim ,  Oh Jo Kwon ,  Jiwoong Kim ,  JunYong Song ,  Dong Won Lee ,  Jae Keun Lim

IPC: G09G3/3266 ,  G09G3/3258 ,  G09G3/3275

Abstract: A display device includes data lines, scan lines, and pixels. Each of the pixels includes an organic light emitting diode, a first transistor (OLED), and a second transistor. The first transistor is electrically connected to an anode of the OLED. The second transistor is electrically connected to the first transistor, a scan line among the scan lines, and a data line among the data lines. The second transistors of the pixels may receive instances of a reference voltage from the data lines during a first period of a frame. The second transistors of the pixels may simultaneously receive instances of a turn-on scan signal from the scan lines during the first period of the frame. Cathodes of the OLEDs of the pixels may receive instances of a turn-off voltage for the OLEDs to turn off during the first period of the frame.

公开(公告)号：US11678542B2

公开(公告)日：2023-06-13

申请号：US17177245

申请日：2021-02-17

Applicant: Samsung Display Co., Ltd.

Inventor： Jeon Kyoo Kim

IPC: G09G3/3275 ,  H10K59/131 ,  G09G3/3266

CPC classification number: H10K59/131 ,  G09G3/3266 ,  G09G3/3275 ,  H10K59/1213 ,  H10K59/1216

Abstract: An organic light emitting diode (OLED) display device includes a first transistor including a gate electrode coupled to a first node, a second transistor including a gate receiving a first scan signal, a third transistor including a gate receiving the first scan signal, a fourth transistor including a gate receiving a second scan signal, a fifth transistor including a gate receiving the second scan signal, a sixth transistor including a gate receiving a third scan signal, a seventh transistor including a gate receiving an emission signal, a first capacitor including a first electrode coupled to a line of a first power supply voltage and a second electrode coupled to a second node, a second capacitor including a first electrode coupled to the second node and a second electrode coupled to the first node, and the OLED including an anode and a cathode coupled to a second power supply voltage.

公开(公告)号：US11227546B2

公开(公告)日：2022-01-18

申请号：US16593651

申请日：2019-10-04

Applicant: Samsung Display Co., Ltd.

Inventor： Jiwoong Kim ,  Ohjo Kwon ,  Jeon Kyoo Kim ,  Jae Keun Lim

IPC: G09G3/3233 ,  H01L27/32 ,  G09G3/3266 ,  G09G3/3291

Abstract: An organic light emitting display device includes a display part including a plurality of scan lines, a plurality of data lines, a plurality of power source lines, and a plurality of pixels each including an organic light emitting diode, a driving transistor coupled to the organic light emitting diode and to a power source line of the power source lines, and a switching transistor coupled to a scan line of the scan lines and to a data line of the data lines, and a sensing driver configured to sample a sensing current from the power source line while a sensing data voltage is applied to one of the pixels, and to calculate a threshold voltage value of the driving transistor using the sensing current in a sensing mode.

公开(公告)号：US11132091B2

公开(公告)日：2021-09-28

申请号：US16827482

申请日：2020-03-23

Applicant: Samsung Display Co., Ltd.

Inventor： Jeon Kyoo Kim

IPC: G06F3/044

Abstract: A touch driving circuit includes: a first sensing driver including a first sensing capacitor connected to a first touch electrode; a second sensing driver including a second sensing capacitor connected to a second touch electrode; and a touch sensing unit connected to the first and second sensing drivers to sense a voltage charged in each of the first and second sensing capacitors. A charging time point of the first sensing capacitor is different from a charging time point of the second sensing capacitor, and a discharging time point of the first sensing capacitor is different from a discharging time point of the second sensing capacitor.

公开(公告)号：US10922516B2

公开(公告)日：2021-02-16

申请号：US16387545

申请日：2019-04-18

Applicant: Samsung Display Co. Ltd.

Inventor： Jeon Kyoo Kim ,  Jun Yong Song ,  Jae Keun Lim

IPC: G06K9/00 ,  G09G3/3233 ,  G06F3/044 ,  G06F21/32 ,  G06F3/041

Abstract: A display device has a display area with a first area in which a fingerprint is recognized and a second area in which a fingerprint is not recognized, and a non-display area. A fingerprint sensing unit is disposed to overlap with the first area. A first pixel set is disposed to overlap with the first area, and a second pixel set is disposed to overlap with the second area, each set including a plurality of pixels. A first voltage signal is provided to the first pixel set as a variable frequency signal, and includes a first period during which the first voltage signal is a first frequency signal, a second period during which the first voltage signal is a second frequency signal having a lower frequency than the first frequency signal, and a third period during which the first voltage signal is the first frequency signal.