公开(公告)号：US20210233465A1

公开(公告)日：2021-07-29

申请号：US17227579

申请日：2021-04-12

Applicant: Samsung Display Co., Ltd.

Inventor： Hyo Jin LEE ,  Joon-Chul GOH ,  Sangan KWON ,  Hui NAM ,  Jin Young ROH ,  Sehyuk PARK

IPC: G09G3/325 ,  G09G3/3275

Abstract: A pixel circuit includes a main-circuit that controls an organic light-emitting element by controlling a driving current to flow into the organic light-emitting element and a sub-circuit including a first compensation transistor including a gate terminal which receives a first gate signal, a second compensation transistor including a gate terminal which receives a second gate signal, and an initialization transistor including a gate terminal which receives an initialization signal. Here, in a low-frequency driving mode, a driving frequency of the first gate signal is N hertz (Hz), a driving frequency of the initialization signal is N Hz, a driving frequency of the second gate signal is M Hz, the first compensation transistor and the initialization transistor are turned on during a first time duration in N non-light-emitting periods per second, and the second compensation transistor is turned on during a second time duration in M non-light-emitting periods per second.

公开(公告)号：US20210074217A1

公开(公告)日：2021-03-11

申请号：US16988643

申请日：2020-08-08

Applicant: Samsung Display Co., Ltd.

Inventor： Hyo Jin LEE ,  Joon-Chul GOH ,  Sangan KWON ,  Hong Soo KIM ,  Hui NAM ,  Jin Young ROH ,  Sehyuk PARK

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

Abstract: A pixel includes: a storage capacitor connected between a first power supply voltage and a gate node; a first transistor including a gate electrode connected to the gate node; a second transistor to transfer a data signal to a source of the first transistor in response to a scan signal; a third transistor to diode-connect the first transistor in response to the scan signal, and including first and second sub-transistors serially connected between the gate node and a drain of the first transistor; a fourth transistor to transfer an initialization voltage to the gate node in response to an initialization signal, and including third and fourth sub-transistors serially connected between the gate node and the initialization voltage; and an organic light emitting diode including a cathode connected to a second power supply voltage. At least one of the second and fourth sub-transistors includes a bottom electrode.

公开(公告)号：US20210020113A1

公开(公告)日：2021-01-21

申请号：US16920322

申请日：2020-07-02

Applicant: Samsung Display Co., Ltd.

Inventor： Sehyuk PARK ,  Sangan KWON ,  HongSoo KIM ,  Jinyoung ROH ,  Hyo Jin LEE

IPC: G09G3/3291

Abstract: A method of driving a display panel includes dividing an input image into a plurality of segments, generating a flicker value of a segment of the plurality of segments, determining whether to compensate the flicker value of the segment or not according to a segment size, compensating the flicker value of the segment based on the segment size, determining a frame rate of the display panel based on the flicker value of the segment and outputting a data voltage to the display panel in the frame rate. The flicker value of the segment is compensated based on the flicker value of the segment and flicker values of segments that are adjacent to the segment.

公开(公告)号：US20200349879A1

公开(公告)日：2020-11-05

申请号：US16844887

申请日：2020-04-09

Applicant: Samsung Display Co., Ltd.

Inventor： Sehyuk PARK ,  Hyo Jin LEE ,  Sangan KWON ,  Jinyoung ROH

IPC: G09G3/20 ,  G09G3/3275 ,  G09G3/3266

Abstract: A display apparatus includes: a display panel configured to display an image based on input image data; a gate driver configured to output a gate signal to the display panel; a data driver configured to output a data voltage to the display panel; and a driving controller configured to control an operation of the gate driver and an operation of the data driver, to determine a driving mode of the display apparatus to one of a normal driving mode and a low frequency driving mode based on the input image data, and to determine a driving frequency of the display panel based on the input image data, wherein the driving controller is configured to determine the driving frequency of the display panel using a flicker value varied according to a grayscale value of the input image data and a luminance setting value.

公开(公告)号：US20190204670A1

公开(公告)日：2019-07-04

申请号：US16031429

申请日：2018-07-10

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Se Hyuk PARK ,  Hyo Jin LEE

IPC: G02F1/1335 ,  F21V8/00

CPC classification number: G02F1/133514 ,  G02B6/0068 ,  G02F1/133609 ,  G02F1/133621

Abstract: A display device includes a first pixel including a first light emitting diode (“LED”) and a second LED having a color different from that of the first LED, a second pixel including a third LED having a same color as that of the first LED, a third pixel including a fourth LED having a same color as that of the first LED, and a color filter layer including a first color filter located on the first pixel, a second color filter that has a color different from a color of the first color filter and is located on the second pixel, and a third color filter that has a color different from the colors of the first and second color filters and is located on the third pixel.