Invention Grant
- Patent Title: Touch screen controller, touch screen driving circuit including the same and touch screen system
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Application No.: US17318288Application Date: 2021-05-12
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Publication No.: US11487386B2Publication Date: 2022-11-01
- Inventor: Changju Lee
- Applicant: Samsung Electronics Co., Ltd.
- Applicant Address: KR Suwon-si
- Assignee: Samsung Electronics Co., Ltd.
- Current Assignee: Samsung Electronics Co., Ltd.
- Current Assignee Address: KR Suwon-si
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: KR10-2020-0073730 20200617
- Main IPC: G06F3/041
- 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.
Public/Granted literature
- US20210397327A1 TOUCH SCREEN CONTROLLER, TOUCH SCREEN DRIVING CIRCUIT INCLUDING THE SAME AND TOUCH SCREEN SYSTEM Public/Granted day:2021-12-23
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