TOUCH SENSING SYSTEM
First Claim
1. A touch sensing system, comprising:
- a plurality of touch sensors;
sensing lines connected to the touch sensors;
a touch sensing integrated circuit (IC) configured to sense a touch input using signals received through a plurality of receiving channels;
a plurality of differential amplifiers formed between the sensing lines and the receiving channels of the touch sensing IC, each of the plurality of differential amplifiers configured to amplify a difference between touch sensor signals received through adjacent sensing lines; and
a multiplexer configured to connect the adjacent sensing lines to input terminals of each differential amplifier in a forward sensing mode and switch the adjacent sensing lines connected to the input terminals of each differential amplifier in a reverse sensing mode.
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Accused Products
Abstract
A touch sensing system includes a plurality of touch sensors, sensing lines connected to the touch sensors, a touch sensing integrated circuit (IC) sensing a touch input using signals received through a plurality of receiving channels, a plurality of differential amplifiers which are formed between the sensing lines and the receiving channels of the touch sensing IC and amplify a difference between touch sensor signals received through adjacent sensing lines, and a multiplexer which connects the adjacent sensing lines to input terminals of each differential amplifier in a forward sensing mode and switches the adjacent sensing lines connected to the input terminals of each differential amplifier in a reverse sensing mode.
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Citations
17 Claims
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1. A touch sensing system, comprising:
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a plurality of touch sensors; sensing lines connected to the touch sensors; a touch sensing integrated circuit (IC) configured to sense a touch input using signals received through a plurality of receiving channels; a plurality of differential amplifiers formed between the sensing lines and the receiving channels of the touch sensing IC, each of the plurality of differential amplifiers configured to amplify a difference between touch sensor signals received through adjacent sensing lines; and a multiplexer configured to connect the adjacent sensing lines to input terminals of each differential amplifier in a forward sensing mode and switch the adjacent sensing lines connected to the input terminals of each differential amplifier in a reverse sensing mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification