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US 2014/0111443 A1Published application
System and Method for a Touch Panel
AssigneeSTMicroelectronics Asia Pacific Pte Ltd
InventorsDianbo Guo, KienBeng Tan
Life of this patent
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Abstract
In accordance with an embodiment, a method of operating a touch panel includes operating a slave touch panel controller by receiving a synchronization signal from a master touch panel controller of a display driver circuit, and polling a plurality of receive inputs coupled to outputs of an in-cell touch module based on an predetermined pattern.
Claims22
A method of operating a touch panel, the method comprising:
- operating a slave touch panel controller, operating the slave touch panel controller comprising
- receiving a synchronization signal from a master touch panel controller of a display driver circuit, and
- polling a plurality of receive inputs coupled to outputs of an in-cell touch module based on a predetermined pattern.
An in-cell touch panel controller circuit comprising:
- a plurality of receiver inputs configured to be coupled to touch panel output signals of an in-cell touch panel circuit of an integrated in-cell touch panel display;
- and
- a slave touch panel controller coupled to the plurality of receiver inputs and to a synchronization input configured to be coupled to a master touch panel controller of a display driver circuit, the slave touch panel controller configured to poll the plurality of receive inputs according to a predetermined pattern upon receipt of a signal on the synchronization input.
An integrated in-cell display system comprising:
- an integrated in-cell display comprising a plurality of touch panel forcing inputs, a plurality of display inputs, and a plurality of touch panel sensor outputs;
- a first integrated circuit comprising a display driver coupled to the plurality of display inputs and a master touch panel controller coupled to the plurality of touch panel forcing inputs, the display driver configured to generate forcing signals on the plurality of forcing inputs and generate a synchronization signal on a synchronization output;
- and
- a second integrated circuit comprising a slave touch panel controller having a synchronization input coupled to the synchronization output of the master touch panel controller, and a plurality of receive inputs coupled to the plurality of touch panel sensor outputs.
1 more element
Dependencies are inferred from the claim text.