09547396 cites 16 patents.

An in-cell multi-touch panel system includes: an in-cell touch display panel, a touch display control system. In a first frame time interval, the touch display control system drives the in-cell touch display panel and samples the sensing voltage from the in-cell touch display panel to determine whether there is an approaching external object and noise interference. In a second frame time interval, the touch display control system finds out a frequency with minimum noise for use as a frequency of the touch driving signal when the noise interference exists. In a third frame time interval, the touch display control system is based on the frequency with minimum noise to correspondingly generate the touch driving signal so as to determine whether there is an approaching external object.

Title
In-cell multi-touch panel system with low noise and time division multiplexing and its driving method
Application Number
14/288661
Publication Number
9547396 (B2)
Application Date
May 28, 2014
Publication Date
January 17, 2017
Inventor
Yen Lin Huang
Taipei
TW
Hsin Hao Wang
Tainan
TW
Agent
Bacon & Thomas PLLC
Assignee
FOCALTECH SYSTEMS
TW
IPC
G06F 3/044
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