公开(公告)号：US11462152B2

公开(公告)日：2022-10-04

申请号：US17380342

申请日：2021-07-20

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Yun Seong Kim ,  Seung Kyu Lee ,  Sun Joon Hwang ,  Min Seong Son ,  Youn Woo Choe

IPC: G09G3/32

Abstract: A display device includes: a pixel including a first transistor connected between a first node and a second node to generate a driving current; an emission driver supplying an emission control signal; a scan driver supplying first to fourth scan signals in a period in which the emission control signal is supplied; a data drive supplying a data signal; a power supply supplying a voltage of a first power source; and a timing controller controlling driving of the scan driver, the emission driver, the data driver, and the power supply The first scan signal controls a timing at which the voltage of the first power source is supplied to the first node or the second node. The power supply changes a level of the voltage of the first power source in one frame period.

公开(公告)号：US11443687B2

公开(公告)日：2022-09-13

申请号：US17242818

申请日：2021-04-28

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Min Seong Son ,  Seung Kyu Lee ,  Sun Joon Hwang ,  Yun Seong Kim ,  Youn Woo Choe

IPC: G09G3/32

Abstract: A display device includes a pixel including a first transistor coupled between a first node and a second node, an emission driver supplying an emission control signal at a first frequency to an emission control line, a scan driver supplying first to fourth scan signals respectively to first to fourth scan lines, a data driver supplying a data signal to a data line, and a timing controller. The first scan signal controls a timing at which a voltage of a first power source is supplied to the first node or the second node, and the second scan signal controls a timing at which a first electrode of the first transistor and a gate electrode of the first transistor are coupled to each other. The scan driver controls a bias state of the first transistor by supplying, plural times, the first and second scan signals in a non-emission period.

公开(公告)号：US11817045B2

公开(公告)日：2023-11-14

申请号：US18054203

申请日：2022-11-10

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Si Beak Pyo ,  Seung Kyu Lee ,  Min Seong Son

IPC: G09G3/32 ,  G09G3/20

CPC classification number: G09G3/32 ,  G09G3/2022 ,  G09G2310/0278 ,  G09G2320/0646

Abstract: A display device includes a display unit including a plurality of pixels coupled to a plurality of data lines, a plurality of scan lines, and a plurality of emission control lines, a controller for determining a width of a gate-off section of an emission control signal, which corresponds to a non-emission section of each of a plurality of frames belonging to a dimming period, in response to a dimming signal, and an emission driver for supplying the emission control signal in units of a plurality of consecutive pixel rows through the plurality of emission control lines.

公开(公告)号：US11545073B2

公开(公告)日：2023-01-03

申请号：US16735134

申请日：2020-01-06

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Si Beak Pyo ,  Seung Kyu Lee ,  Min Seong Son

IPC: G09G3/32 ,  G09G3/20

Abstract: A display device includes a display unit including a plurality of pixels coupled to a plurality of data lines, a plurality of scan lines, and a plurality of emission control lines, a controller for determining a width of a gate-off section of an emission control signal, which corresponds to a non-emission section of each of a plurality of frames belonging to a dimming period, in response to a dimming signal, and an emission driver for supplying the emission control signal in units of a plurality of consecutive pixel rows through the plurality of emission control lines.

公开(公告)号：US11270650B2

公开(公告)日：2022-03-08

申请号：US16836941

申请日：2020-04-01

Applicant: Samsung Display Co., LTD.

Inventor： Jung Deok Seo ,  Seung Kyu Lee ,  Min Seong Son

IPC: G09G3/3266 ,  G09G3/3275

Abstract: A display device including pixels connected to a p-type scan line, an n-type scan line, and a data line, to display an image in a first mode with a first frequency or a second mode with a second, lower frequency, a first scan driver to supply a p-type signal having a first voltage to the p-type scan line, and a second scan driver to supply an n-type signal having a second, greater voltage to the n-type scan line, the second mode includes a first period corresponding to one frame period and a second period including consecutive frame periods, in which during the first period, the scan drivers supply i number of corresponding signals to the p-type and n-type scan lines, respectively, and during at least one frame of the second period, the first scan driver supplies j number of p-type signals to the p-type scan line.

公开(公告)号：US11189233B2

公开(公告)日：2021-11-30

申请号：US16851453

申请日：2020-04-17

Applicant: Samsung Display Co., Ltd.

Inventor： Min Seong Son ,  Hyun Jung Son ,  Jae Cheon Park ,  Seung Kyu Lee ,  Yoon Gyu Lee ,  Sun Joon Hwang

IPC: G09G3/3208 ,  G09G3/3266 ,  G09G3/3275

Abstract: A display device includes a display driver configured to drive pixels in correspondence with input image data, timing signals, and a brightness selection signal. The display driver includes a storage unit configured to store gamma data and a duty value for each of a plurality of sample brightness levels including a K-th sample brightness level, and a brightness controller, the display driver being configured to control the brightness of the display area according to the gamma data or the duty value or gamma data obtained by non-linearly interpolating gamma data of a (K−1)-th sample brightness level and the K-th sample brightness level, with respect to a tuning point brightness level. A light emission time of the pixels corresponding to the (K−1)-th sample brightness level is less than or equal to 10% shorter than the light emission time of the pixels corresponding to the K-th sample brightness level.

公开(公告)号：US11176887B2

公开(公告)日：2021-11-16

申请号：US16892130

申请日：2020-06-03

Applicant: Samsung Display Co., Ltd.

Inventor： Jung Deok Seo ,  Seung-Kyu Lee ,  Min Seong Son

IPC: G09G3/3258

Abstract: The present disclosure relates to a display apparatus enhancing a display quality and a method of driving the display apparatus. The display apparatus comprises a display panel and a power voltage generator. The display panel comprises a plurality of pixels. The power voltage generator is configured to output a first initialization voltage, a second initialization voltage, a first power voltage, and a second power voltage less than the first power voltage to the plurality of pixels. The power voltage generator is configured to output the second initialization voltage substantially equal to the second power voltage in response to an emergency shutdown signal.