FLEXIBLE SELF-CAPACITANCE AND MUTUAL CAPACITANCE TOUCH SENSING SYSTEM ARCHITECTURE
First Claim
1. A switching circuit comprising:
- a plurality of pixel mux blocks, each of the pixel mux blocks configured to be coupled to a respective touch node electrode on a touch sensor panel, and each of the pixel mux blocks including logic circuitry; and
a plurality of signal lines configured to be coupled to sense circuitry, at least one of the signal lines configured to transmit a touch signal from one of the respective touch node electrodes to the sense circuitry,wherein the logic circuitry in each pixel mux block of the plurality of pixel mux blocks is configured to control the respective pixel mux block so as to selectively couple the respective pixel mux block to any one of the plurality of signal lines.
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Abstract
A switching circuit is disclosed. The switching circuit can comprise a plurality of pixel mux blocks, each of the pixel mux blocks configured to be coupled to a respective touch node electrode on a touch sensor panel, and each of the pixel mux blocks including logic circuitry. The switching circuit can also comprise a plurality of signal lines configured to be coupled to sense circuitry, at least one of the signal lines configured to transmit a touch signal from one of the respective touch node electrodes to the sense circuitry. The logic circuitry in each pixel mux block of the plurality of pixel mux blocks can be configured to control the respective pixel mux block so as to selectively couple the respective pixel mux block to any one of the plurality of signal lines.
71 Citations
24 Claims
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1. A switching circuit comprising:
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a plurality of pixel mux blocks, each of the pixel mux blocks configured to be coupled to a respective touch node electrode on a touch sensor panel, and each of the pixel mux blocks including logic circuitry; and a plurality of signal lines configured to be coupled to sense circuitry, at least one of the signal lines configured to transmit a touch signal from one of the respective touch node electrodes to the sense circuitry, wherein the logic circuitry in each pixel mux block of the plurality of pixel mux blocks is configured to control the respective pixel mux block so as to selectively couple the respective pixel mux block to any one of the plurality of signal lines. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of operating a touch screen, the method comprising:
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coupling each of a plurality of pixel mux blocks to a respective touch node electrode on a touch sensor panel; transmitting a touch signal on at least one of a plurality of signal lines from one of the respective touch node electrodes to sense circuitry; and selectively coupling each pixel mux block to any one of the plurality of signal lines. - View Dependent Claims (19, 20)
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21. A switching circuit comprising:
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a plurality of pixel mux blocks including a first plurality of pixel mux blocks and a second plurality of pixel mux blocks, each pixel mux block of the plurality of pixel mux blocks configured to selectively couple a respective touch node electrode on a touch sensor panel to sense circuitry, wherein the first plurality of pixel mux blocks is associated with a first group identification, and the second plurality of pixel mux blocks is associated with a second group identification, different from the first group identification; and logic circuitry included in each pixel mux block of the first plurality of pixel mux blocks and the second plurality of pixel mux blocks, the logic circuitry configured to configure its respective pixel mux block based on a group identification of its respective pixel mux block and a target group identification provided by the sense circuitry. - View Dependent Claims (22, 23, 24)
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Specification