公开(公告)号：US11442572B2

公开(公告)日：2022-09-13

申请号：US16938261

申请日：2020-07-24

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jinbong Kim ,  Changju Lee ,  Yoonkyung Choi

IPC: G06F3/044 ,  G06F3/04883 ,  G09G3/3233 ,  G06V40/13 ,  G06F3/041

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; 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; and a control circuit configured to control the an analog front-end circuit based on which type of element among the touch sensors or the display pixels is connected to the analog front-end circuit.

公开(公告)号：US12094405B2

公开(公告)日：2024-09-17

申请号：US17986367

申请日：2022-11-14

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Changju Lee ,  Kyoungmin Lee

IPC: G09G3/3225 ,  G06F3/041 ,  G06V40/13 ,  G09G3/20 ,  H01L23/00 ,  H01L23/522 ,  H01L25/16 ,  H10K59/12

CPC classification number: G09G3/3225 ,  G06F3/0416 ,  G06V40/13 ,  G09G3/2096 ,  H01L24/08 ,  H01L25/167 ,  G09G2300/0842 ,  G09G2354/00 ,  G09G2360/18 ,  H01L2224/08145 ,  H10K59/12

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：US11817050B2

公开(公告)日：2023-11-14

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

CPC classification number: G09G3/3225 ,  G09G2310/0243 ,  G09G2310/0278 ,  G09G2310/08 ,  G09G2320/0247 ,  G09G2330/021

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：US11487386B2

公开(公告)日：2022-11-01

申请号：US17318288

申请日：2021-05-12

Applicant: Samsung Electronics Co., Ltd.

Inventor： Changju Lee

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

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：US20210349562A1

公开(公告)日：2021-11-11

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.