公开(公告)号：US20220238074A1

公开(公告)日：2022-07-28

申请号：US17717997

申请日：2022-04-11

Applicant: Samsung Display Co., Ltd.

Inventor： SEHYUK PARK ,  HONGSOO KIM ,  JINYOUNG ROH ,  BONGHYUN YOU ,  HYOJIN LEE ,  JAEKEUN LIM

IPC: G09G3/3266 ,  G09G3/3275

Abstract: A display apparatus includes a display panel, a gate driver, a data driver, a driving controller and a power voltage generator. The display panel displays an image based on input image data. The gate driver outputs a gate signal to a gate line. The data driver outputs a data voltage to a data line. The driving controller drives display areas of the display panel in different driving frequencies. The power voltage generator outputs a data power voltage to the data driver. The driving controller outputs an output data enable signal including a writing period having an active signal and a holding period having an inactive signal for the respective display areas. The power voltage generator generates the data power voltage having a high power voltage level during the writing period and a low power voltage level in at least a portion of the holding period.

公开(公告)号：US20220013059A1

公开(公告)日：2022-01-13

申请号：US17212392

申请日：2021-03-25

Applicant: Samsung Display Co., Ltd.

Inventor： SEHYUK PARK ,  HONGSOO KIM ,  JINYOUNG ROH ,  HYOJIN LEE ,  JAEKEUN LIM

IPC: G09G3/20

Abstract: A display apparatus includes a display panel, a data driver and a frequency controller. The display panel displays an image based on an input image data. The data driver outputs a data voltage to the display panel. The frequency controller determines a driving frequency of the display panel based on the input image data and a play speed setting.

公开(公告)号：US20240069672A1

公开(公告)日：2024-02-29

申请号：US18328285

申请日：2023-06-02

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： HYOJIN LEE ,  SOONGYU LEE ,  JINWOO KIM ,  WOOMI BAE

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/041662 ,  G06F3/0446

Abstract: A method of driving an input sensor to detect a proximity of a user includes driving the input sensor in a direct sensing mode, the input sensor including first sensing electrodes and second sensing electrodes insulated from the first sensing electrodes, and upon determining the user is engaged in a call, driving the input sensor in in a first proximity sensing mode by applying a driving signal to each of the first sensing electrodes. when the user has not performed the direct touch, and driving the input sensor in a second proximity sensing mode by applying no driving signal to a first subset of the first sensing electrodes and applying the driving signal to a second other subset of the first sensing electrodes, when the user has performed the direct touch.

公开(公告)号：US20230065185A1

公开(公告)日：2023-03-02

申请号：US17863519

申请日：2022-07-13

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： HYOJIN LEE ,  WOOMI BAE ,  HUI NAM ,  JINYOUNG ROH ,  SEHYUK PARK ,  JAEKEUN LIM

IPC: G09G3/3266

Abstract: A display device includes a display panel including a plurality of pixel rows, and a panel driver which drives the display panel. The panel driver determines whether input image data represents a still image. When the input image data represents the still image, the panel driver determines a flicker value of the still image, applies a compensation value corresponding to a carry shift interval to the flicker value, determines a driving frequency for the display panel based on the flicker value to which the compensation value is applied, and performs an alternate driving operation for the display panel at the driving frequency.

公开(公告)号：US20220059039A1

公开(公告)日：2022-02-24

申请号：US17389466

申请日：2021-07-30

Applicant: Samsung Display Co., Ltd.

Inventor： JINYOUNG ROH ,  HONGSOO KIM ,  SEHYUK PARK ,  HYOJIN LEE ,  JAEKEUN LIM

IPC: G09G3/3291 ,  G09G3/3266

Abstract: A gate driver includes a first stage, a second stage, a third stage and a fourth stage. The first stage includes a first clock terminal receiving a first clock signal, a second clock terminal receiving a second clock signal, a carry terminal receiving a vertical start signal and an output terminal outputting a first gate output signal. The second stage includes a first clock terminal receiving the second clock signal, a second clock terminal receiving the first clock signal, a carry terminal receiving the vertical start signal and an output terminal outputting a second gate output signal. The third stage includes a first clock terminal receiving the second clock signal, a second clock terminal receiving the first clock signal, a carry terminal receiving the first gate output signal and an output terminal outputting a third gate output signal.

公开(公告)号：US20250165108A1

公开(公告)日：2025-05-22

申请号：US18947141

申请日：2024-11-14

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： YONGJIN JEE ,  HYOJIN LEE ,  KYOUNGHUN BEEN ,  HOEUNG LEE

IPC: G06F3/044

Abstract: An input sensor of a display device includes a plurality of first electrodes, a plurality of second electrodes crossing the plurality of first electrodes, and a sensor driver selectively operating in a first proximity sensing mode and a second proximity sensing mode. The sensor driver outputs a plurality of transmission signals to the plurality of first electrodes and receives sensing signals from the plurality of second electrodes. The plurality of transmission signals includes a signal swinging between a first high level and a first low level during the first proximity sensing mode. The plurality of transmission signals is a signal swinging between a second high level and a second low level during a second proximity sensing mode. The second high level is a voltage level greater than the first high level.

公开(公告)号：US20240185797A1

公开(公告)日：2024-06-06

申请号：US18407362

申请日：2024-01-08

Applicant: Samsung Display Co., Ltd.

Inventor： SEHYUK PARK ,  HONGSOO KIM ,  JINYOUNG ROH ,  BONGHYUN YOU ,  HYOJIN LEE ,  JAEKEUN LIM

IPC: G09G3/3266 ,  G09G3/3275

CPC classification number: G09G3/3266 ,  G09G3/3275 ,  G09G2310/04 ,  G09G2320/0247 ,  G09G2320/103 ,  G09G2330/023 ,  G09G2330/028

Abstract: A display apparatus includes a display panel, a gate driver, a data driver, a driving controller and a power voltage generator. The display panel displays an image based on input image data. The gate driver outputs a gate signal to a gate line. The data driver outputs a data voltage to a data line. The driving controller drives display areas of the display panel in different driving frequencies. The power voltage generator outputs a data power voltage to the data driver. The driving controller outputs an output data enable signal including a writing period having an active signal and a holding period having an inactive signal for the respective display areas. The power voltage generator generates the data power voltage having a high power voltage level during the writing period and a low power voltage level in at least a portion of the holding period.

公开(公告)号：US20240143113A1

公开(公告)日：2024-05-02

申请号：US18451417

申请日：2023-08-17

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： HYOJIN LEE ,  SOONGYU LEE ,  JINWOO KIM ,  WOOMI BAE

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/04182 ,  G06F3/0446 ,  G06F2203/04108

Abstract: A display device includes a display panel, an input sensor operating in an input sensing mode or a proximity sensing mode, a sensor controller driving the input sensor in the input sensing mode or the proximity sensing mode, and a main controller controlling driving of the sensor controller. The input sensor includes a sensing area and a non-sensing area. The sensing area is divided into a proximity sensing area and a plurality of reference areas in the proximity sensing mode. The main controller generates a noise control signal based on a plurality of reference sensing signals sensed in the reference areas, and determines whether an object is in proximity based on the noise control signal and a proximity sensing signal sensed in the proximity sensing area.

公开(公告)号：US20230418415A1

公开(公告)日：2023-12-28

申请号：US18100228

申请日：2023-01-23

Applicant: Samsung Display Co., Ltd.

Inventor： WOOMI BAE ,  JINWOO KIM ,  SOONGYU LEE ,  HYOJIN LEE

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0418 ,  G06F3/045 ,  G06F2203/04108 ,  G06F3/044

Abstract: A display device includes a display panel, a touch panel on the display panel, a host processor, and a display panel driver. The host processor receives proximity data of the touch panel. The display panel driver receives an input control signal from the host processor and drives the display panel based on the input control signal. The touch panel includes a proximity area and a non-proximity area. The host processor counts a rise of the proximity data in the proximity area to generate a first count value. The host processor resets the first count value when the proximity data in the non-proximity area increase.

公开(公告)号：US20220238076A1

公开(公告)日：2022-07-28

申请号：US17539555

申请日：2021-12-01

Applicant: Samsung Display Co., Ltd.

Inventor： WOOMI BAE ,  HAE-KWAN SEO ,  YOUNGHA SOHN ,  HYOJIN LEE ,  JAEKEUN LIM

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

Abstract: A display device includes a display panel that includes a first display area and a second display area, a data driving circuit which drives a plurality of data lines, a scan driving circuit which drives a plurality of scan lines, and a driving controller which controls the data driving circuit and the scan driving circuit such that the first display area is driven at a first driving frequency, and the second display area is driven at a second driving frequency lower than the first driving frequency during a multi-frequency mode, where the driving controller receives an image signal and provides to the data driving circuit an image data signal obtained by compensating for a gamma level of the image signal corresponding to the second display area during the multi-frequency mode.