公开(公告)号：US20210397327A1

公开(公告)日：2021-12-23

申请号：US17318288

申请日：2021-05-12

Applicant: Samsung Electronics Co., Ltd.

Inventor： Changju LEE

IPC: G06F3/041 ,  G09G3/20

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：US20210065602A1

公开(公告)日：2021-03-04

申请号：US16996391

申请日：2020-08-18

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Changju LEE ,  Yoonkyung Choi ,  Jinbong Kim ,  Junho Huh

IPC: G09G3/20 ,  G06F3/041 ,  G06K9/00 ,  A61B5/00

Abstract: A display chipset structure that is based on an integrated display controller is provided. The display controller includes including a display processor comprising a first digital circuit, and configured to receive image data from an application processor (AP) and output the image data to a first component driver chip configured to drive a gate line and a source line of a display panel; and a touch processor comprising a second digital circuit, and configured to receive touch data from a second component driver chip configured to drive sensing electrodes of a touch panel. The display controller is implemented as one semiconductor chip and separated from each of the first and second component driver chips, and the display processor and the touch processor communicate with each other through an internal interconnection of the one semiconductor chip.

公开(公告)号：US20240038157A1

公开(公告)日：2024-02-01

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

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

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：US20240029624A1

公开(公告)日：2024-01-25

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: G09G3/20 ,  G09G3/3233

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

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：US20230206830A1

公开(公告)日：2023-06-29

申请号：US17986367

申请日：2022-11-14

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Changju LEE ,  Kyoungmin LEE

IPC: G09G3/3225 ,  H01L25/16 ,  H01L23/00 ,  G09G3/20 ,  G06F3/041 ,  G06V40/13

CPC classification number: G09G3/3225 ,  H01L25/167 ,  H01L24/08 ,  G09G3/2096 ,  G06F3/0416 ,  G06V40/13 ,  H01L27/3244

Abstract: A stacked display driver integrated circuit (DDIC) configured to drive a display panel of a display device includes a first circuit and a second circuit. The first circuit is formed by a low-end process according to a first design rule such that the first circuit has a first critical dimension. The second circuit is formed by a high-end process according to a second design rule smaller than the first design rule such that the second circuit has a second critical dimension smaller than the first critical dimension. The first circuit and the second circuit are stacked in a vertical direction. The size of the stacked DDIC may be reduced by stacking, in the vertical direction, the first circuit including analog circuits and the second circuit including digital circuits.

公开(公告)号：US20230050409A1

公开(公告)日：2023-02-16

申请号：US17977143

申请日：2022-10-31

Applicant: Samsung Electronics Co., Ltd.

Inventor： Changju LEE

IPC: G06F3/041 ,  G09G3/20

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：US20220114957A1

公开(公告)日：2022-04-14

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.