Touch device of display and method of controlling the same
AssigneeLx Semicon Co., Ltd.
InventorsChin Wan LEE, Jae Hwan LEE
Life of this patent
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Abstract
Disclosed are a method and device for addressing an issue of degradation of a signal-to-noise ratio SNR of small touch sensor nodes located in an outer region of a circular display. Due to design characteristics of the circular display, sizes of touch sensors in the outer region are reduced, which leads to degradation of the SNR and causes imbalance in touch sensitivity. To address such an issue, provided is an SNR correction method including techniques such as grouping nodes based on sensor size and amplifying signals.
Claims15
A touch device of a display, the touch device comprising:
- a plurality of touch sensor nodes configured to sense touch signals of a touch display panel;
- and
- a plurality of multiplexers MUXs configured to collect the touch signals sensed by the plurality of touch sensor nodes and to selectively output the touch signals, wherein:
- the plurality of touch sensor nodes is classified into a plurality of node groups based on sizes of the touch sensor nodes, and
- the plurality of MUXs respectively correspond to the plurality of classified node groups to collect the touch signals and selectively output at least one touch signal among the touch sensor nodes in each node group.
A method for controlling a touch device of a display, the method comprising:
- sensing touch signals of a touch panel;
- and
- collecting and selectively outputting the sensed touch signals, wherein:
- the sensing touch signals comprises classifying the touch signals into a plurality of groups and sensing the touch signals based on sizes of a plurality of touch sensor nodes, and
- the collecting and selectively outputting the touch signals comprises collecting the touch signals respectively corresponding to the plurality of classified node groups and selectively outputting at least one touch signal among the touch sensor nodes within each node group.
Dependencies are inferred from the claim text.