公开(公告)号：US12086361B2

公开(公告)日：2024-09-10

申请号：US17977143

申请日：2022-10-31

Applicant: Samsung Electronics Co., Ltd.

Inventor： Changju Lee

IPC: G06F3/041 ,  G09G3/20 ,  G06F3/044

CPC classification number: G06F3/04182 ,  G06F3/0412 ,  G09G3/20 ,  G06F3/04166 ,  G06F3/0446 ,  G09G2310/08 ,  G09G2360/18

Abstract: A touch screen controller, a touch screen driving circuit and a touch screen system are provided. The touch screen driving circuit configured to drive a touch screen includes an analog driving circuit configured to provide driving signals to a display panel and a touch panel of the touch screen, and generate a touch sensing value based on a touch sensing signal from the touch panel; a display noise table (DNT) comprising display noise information indicating display noise that varies according to a driving state of the touch screen and image data; a feature extractor configured to extract a plurality of feature values from the driving state and the image data; and a touch processor configured to read a display noise value mapped to the plurality of feature values from the DNT, subtract the display noise value from the touch sensing value and generate a touch value.

公开(公告)号：US11422653B2

公开(公告)日：2022-08-23

申请号：US17189503

申请日：2021-03-02

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Changju Lee

IPC: G06F3/041 ,  G06F3/0488

Abstract: The present disclosure provides a touch and display control device with a touch screen controller and a display driver. The touch screen controller receives a touch sensing signal, generates touch raw data based on the touch sensing signal, and extracts touch information based on the touch raw data. The display driver receives an original image from a host processor, directly receives the touch information from the touch screen controller, generates touch trajectory information by accumulating the touch information, internally generates a touch image to be displayed with the original image based on the touch trajectory information, generates a composite image by synthesizing the original image and the touch image, and controls a display panel to display the composite image. The display driver includes a memory storing the touch trajectory information.

公开(公告)号：US20210117035A1

公开(公告)日：2021-04-22

申请号：US16938261

申请日：2020-07-24

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： JINBONG KIM ,  Changju Lee ,  Yoonkyung Choi

IPC: G06F3/041 ,  G06F3/044 ,  G06K9/00 ,  G09G3/3225

Abstract: A touch display controller, panel and system may include a select circuit having a first selectable input terminal connected to touch sensors, a second selectable input terminal connected to display pixels, and an output terminal; and an analog front-end circuit coupled to the output terminal of the select circuit to receive a raw analog signal, and having a shared processing path for analog signals from both the touch sensors and the display pixels.

公开(公告)号：US20250104620A1

公开(公告)日：2025-03-27

申请号：US18887681

申请日：2024-09-17

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Changju Lee ,  Woojoo Kim ,  Haksong Kim ,  Kyounghwan Kwon

IPC: G09G3/3208

Abstract: A display driving circuit operating in video mode is described. The display driving circuit includes an interface configured to receive, from an external source, sync signals and image data corresponding to each of a plurality of frames, a data processor configured to receive the image data from the interface and convert the image data, and a timing controller configured to generate internal control signals for driving a driver circuit based on the sync signals and the image data. The internal control signals are configured to be output only when the sync signals and signals corresponding to the image data are input simultaneously, and panel driving signals are configured to be output when the internal control signals are output.

公开(公告)号：US12057055B2

公开(公告)日：2024-08-06

申请号：US18209540

申请日：2023-06-14

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Changju Lee ,  Sooyong Kim ,  Taesung Kim ,  Junho Huh

IPC: G09G5/18 ,  G09G3/20 ,  G09G3/3233

CPC classification number: G09G3/2096 ,  G09G3/3233 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/08 ,  G09G2320/0247 ,  G09G2330/023 ,  G09G2370/00

Abstract: A display driving circuit for receiving image data from a host and driving a display panel, the display driving circuit including: an interface configured to receive the image data from the host; and a timing controller configured to control a first interrupt signal for waking up the host in a low-power mode and to control a second interrupt signal based on a light emission control signal, wherein the light emission control signal is for controlling a light emission time of a pixel included in the display panel, and wherein the timing controller is further configured to control a level of the second interrupt signal based on whether the image data has started to be received from the host in response to the first interrupt signal and the second interrupt signal.

公开(公告)号：US20210350754A1

公开(公告)日：2021-11-11

申请号：US17244369

申请日：2021-04-29

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Changju Lee ,  Yongil Kwon ,  Yoon-Kyung Choi ,  Junho Huh

IPC: G09G3/34 ,  G09G5/10 ,  G09G3/32

Abstract: A backlight device includes LED elements divided into dimming groups; a panel driver configured to output a reference current for driving the LED elements; and pixel circuits, each of which is connected to the panel driver through a common line and is respectively configured to drive first LED elements comprised in a corresponding dimming group. Each of the pixel circuits is configured to: in a first period of a frame period, obtain a reference voltage based on the reference current and store the reference voltage, in a second period of the frame period, obtain luminance data of an image displayed by the corresponding dimming group, and in a third period of the frame period, drive the first LED elements during a light emitting time corresponding to the luminance data obtained in the second period using the reference voltage stored in the first period.

公开(公告)号：US12131696B2

公开(公告)日：2024-10-29

申请号：US18351177

申请日：2023-07-12

Applicant: Samsung Electronics Co., Ltd.

Inventor： Changju Lee ,  Kyounghwan Kwon ,  Junho Huh

IPC: G09G3/3225 ,  G09G3/3233

CPC classification number: G09G3/3225 ,  G09G2310/08 ,  G09G2320/0247 ,  G09G2330/023

Abstract: A display system includes a host configured to transfer image data respectively corresponding to a plurality of frames through a main channel, and to transfer a synchronization signal that synchronizes a clock signal of the host with a clock signal of the display driving circuit through an auxiliary channel, a display panel configured to display the image data, and a display driving circuit configured to generate control signals driving the display panel, based on the synchronization signal received through the auxiliary channel. The host is configured to transfer the synchronization signal including a first synchronization signal and a second synchronization signal that is different from the first synchronization signal, to the display driving circuit, through the auxiliary channel.

公开(公告)号：US11615752B2

公开(公告)日：2023-03-28

申请号：US17244369

申请日：2021-04-29

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Changju Lee ,  Yongil Kwon ,  Yoon-Kyung Choi ,  Junho Huh

IPC: G09G3/32 ,  G09G3/34 ,  G09G5/10

Abstract: A backlight device includes LED elements divided into dimming groups; a panel driver configured to output a reference current for driving the LED elements; and pixel circuits, each of which is connected to the panel driver through a common line and is respectively configured to drive first LED elements comprised in a corresponding dimming group. Each of the pixel circuits is configured to: in a first period of a frame period, obtain a reference voltage based on the reference current and store the reference voltage, in a second period of the frame period, obtain luminance data of an image displayed by the corresponding dimming group, and in a third period of the frame period, drive the first LED elements during a light emitting time corresponding to the luminance data obtained in the second period using the reference voltage stored in the first period.

公开(公告)号：US20230110768A1

公开(公告)日：2023-04-13

申请号：US18065906

申请日：2022-12-14

Applicant: Samsung Electronics Co., Ltd.

Inventor： Changju Lee ,  Yonjun Shin ,  Hoonmo Yang ,  Sungchul Yoon ,  Junghak Lee

IPC: G09G3/3225

Abstract: A display system including a host processor and a display driver integrated circuit may be provided. The host processor may generate a clock signal that swings swinging between a high level and a low level, generate and output a first synchronization signal based on the clock signal, generate a wakeup interrupt by measuring a frame update period of a display panel, generates frame data based on the first synchronization signal by enabling an image providing path based on the wakeup interrupt, and output the frame data for every frame update period. The display driver integrated circuit may receive the first synchronization signal and the frame data from the host processor, and control the display panel such that a frame image corresponding to the frame data is displayed on the display panel based on the first synchronization signal without storing the frame data.

公开(公告)号：US11532269B2

公开(公告)日：2022-12-20

申请号：US17381788

申请日：2021-07-21

Applicant: Samsung Electronics Co., Ltd.

Inventor： Changju Lee ,  Yonjun Shin ,  Hoonmo Yang ,  Sungchul Yoon ,  Junghak Lee

IPC: G09G3/3225

Abstract: A display system including a host processor and a display driver integrated circuit may be provided. The host processor may generate a clock signal that swings swinging between a high level and a low level, generate and output a first synchronization signal based on the clock signal, generate a wakeup interrupt by measuring a frame update period of a display panel, generates frame data based on the first synchronization signal by enabling an image providing path based on the wakeup interrupt, and output the frame data for every frame update period. The display driver integrated circuit may receive the first synchronization signal and the frame data from the host processor, and control the display panel such that a frame image corresponding to the frame data is displayed on the display panel based on the first synchronization signal without storing the frame data.