公开(公告)号：US11574584B2

公开(公告)日：2023-02-07

申请号：US17657807

申请日：2022-04-04

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Soon Dong Kim ,  Sang An Kwon ,  Jin Wook Yang ,  Chang Noh Yoon

IPC: G09G3/32

Abstract: A display device includes a display panel having first and second display areas. A data driver provides data and bias voltages to data lines. A timing controller controls the data driver and a scan driver based on at least two operation modes. The first mode drives the first and second display areas at a normal frequency, and the second mode drives the first display area at a first frequency substantially equal to or lower than the normal frequency and the second display area at a second frequency lower than the first frequency. The second mode includes an active frame to write a reference voltage to display a black image in the second display area, and blank frames to maintain the reference voltage and apply the bias voltage to the pixels in the second display area. The data driver varies the bias voltage in the blank frames.

公开(公告)号：US11386844B2

公开(公告)日：2022-07-12

申请号：US16943197

申请日：2020-07-30

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jae Hyeon Jeon ,  Joon Chul Goh ,  Jin Wook Yang ,  Ki Hong Song

IPC: G09G3/3258 ,  G09G3/3266

Abstract: A display device includes: a plurality of pixels, where each of the pixels includes a light emitting device and a pixel circuit coupled to the light emitting device; a scan driver which supplies a scan signal to the pixel circuit; a data driver which supplies a data signal to the pixel circuit; a power supply which supplies a voltage to the pixel circuit; a timing controller which controls the scan driver; a first signal generator which provides a first clock signal to the timing controller; and a second signal generator which provides a second clock signal to the timing controller.

公开(公告)号：US11341934B2

公开(公告)日：2022-05-24

申请号：US17162138

申请日：2021-01-29

Applicant: SAMSUNG DISPLAY CO., LTD.

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

IPC: G09G5/36 ,  G09G3/20

Abstract: An image display system includes a graphic processor which generates an image signal, a control signal, and a variable frequency signal; and a display device which displays an image at a frame frequency corresponding to the variable frequency signal from the graphic processor. The display device includes pixels connected to emission control lines, data lines, and scan lines; a controller which provides reference data including information on reference cycles, which are cycles in which an emission control start signal is output, to the graphic processor, outputs the emission control start signal based on the control signal, and adjusting an output timing of a scan start signal based on the variable frequency signal; an emission driver which supplies emission control signals to the emission control lines based on the emission control start signal; and a scan driver which supplies scan signals to the scan lines based on the scan start signal.

公开(公告)号：US11322098B2

公开(公告)日：2022-05-03

申请号：US17326299

申请日：2021-05-20

Applicant: Samsung Display Co., Ltd.

Inventor： Eun Gyeong Choe ,  Jin Wook Yang

IPC: G09G3/3291 ,  G09G3/3258

Abstract: A display device including a first scan line, a first dot and a second dot each including first to fourth pixels sequentially connected to the first scan line, a data driver to supply data voltages to first to fourth output lines, and a switch unit to selectively connect the first to fourth output lines to the first to fourth pixels of the first dot or the second dot, in response to first and second control signals, and including first to fourth switches to selectively connect the first to fourth output lines to the first to fourth pixels of the first dot, respectively, in response to the first control signal, and fifth to eighth switches to selectively connect the first to fourth output lines to the third, the second, the first, and the fourth pixels of the second dot, respectively, in response to the second control signal.

公开(公告)号：US11183122B2

公开(公告)日：2021-11-23

申请号：US16539044

申请日：2019-08-13

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jin Wook Yang ,  Soon Dong Kim ,  Chang Noh Yoon ,  Eun Gyeong Choe

IPC: G09G3/3266 ,  G09G3/3258 ,  G09G3/3233 ,  G09G3/3275

Abstract: A display device includes pixels sequentially arranged along a first direction, a data driver having output lines and generating data signals, data lines each including sub-data lines extended along the first direction, demultiplexers each connecting a corresponding output line of the output lines to a corresponding data line of the data lines and switching the corresponding output line to one of the sub-data lines one at a time so that each of the data signals is supplied to a corresponding pixel of the pixels.

公开(公告)号：US11017728B2

公开(公告)日：2021-05-25

申请号：US16538824

申请日：2019-08-13

Applicant: Samsung Display Co., Ltd.

Inventor： Eun Gyeong Choe ,  Jin Wook Yang

IPC: G09G3/3291 ,  G09G3/3258

Abstract: A display device includes: first and second dots arranged on a first horizontal line in a first direction, each of the first and second dots including first to fourth pixels; a switch unit configured to selectively couple first to fourth output lines respectively to the first to fourth pixels of each of the first and second dots, in response to a first control signal and a second control signal; and a data driver configured to supply data voltages to the first to fourth output lines in a time-sharing manner. The data driver may include: a data processor configured to generate data signals corresponding to the first to fourth output lines; and first to fourth digital-to-analog converters (DACs) configured to convert the data signals into the data voltages. Each of the first to fourth DACs may be supplied with a corresponding one of first to fourth gamma voltages.