Invention Grant
- Patent Title: Noise mitigation for display panel sensing
-
Application No.: US16361018Application Date: 2019-03-21
-
Publication No.: US10573211B2Publication Date: 2020-02-25
- Inventor: Hung Sheng Lin , Shengkui Gao , Hyunwoo Nho , Chin-Wei Lin , Mohammad B. Vahid Far , Jie Won Ryu , Kingsuk Brahma , Junhua Tan , Sun-Il Chang , Shinya Ono , Jesse A. Richmond , Yafei Bi , Derek K. Shaeffer
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Fletcher Yoder, P.C.
- Main IPC: G09G3/00
- IPC: G09G3/00

Abstract:
Systems and methods are provided for differential sensing (DS), difference-differential sensing (DDS), correlated double sampling (CDS), and/or programmable capacitor matching to reduce display panel sensing noise. An electronic device may include one or more processors and an electronic display. The one or more processors may generate image data and adjust the image data based at least in part on display sensing feedback. The electronic display may employ sensing circuitry that obtains the display sensing feedback at least in part by applying test data to a pixel of a column of an active area of the display and differentially senses an electrical value of the pixel in comparison to a reference signal from a different column. This reference signal may provide a common mode noise reference, which is removed by the differential sensing and thereby enhances a quality of the sensed electrical value of the pixel.
Public/Granted literature
- US20190221146A1 NOISE MITIGATION FOR DISPLAY PANEL SENSING Public/Granted day:2019-07-18
Information query