Integrated capacitive sensing and displaying
First Claim
1. A display device having an integrated capacitive proximity sensor, said display device comprising:
- a plurality of common voltage (VCOM) electrode segments comprising a first VCOM electrode segment and a second VCOM electrode segment,wherein the plurality of VCOM electrode segments is disposed as part of a display element of the display device, andwherein the plurality of VCOM electrode segments is configured for performing both transmitter sensor electrode functions of a transcapacitive sensor and VCOM electrode display functions of the display device;
a first display drive gate;
a first plurality of sub-pixel transistors comprising;
a plurality of drains coupled to the first VCOM electrode segment; and
a plurality of gates coupled to an output of the first display drive gate;
a sensor drive mechanism comprising a first row output configured to select the first VCOM electrode segment to perform the transmitter electrode functions;
a display drive mechanism comprising a first row output for driving the first display drive gate; and
an arbitration mechanism configured to prevent a sensor drive signal and a display drive signal from being simultaneously driven on the first VCOM electrode segment, the arbitration mechanism comprising;
a first arbitration gate driven by the first output row of the sensor drive mechanism; and
a first plurality of transistors that drive, based on an output of the first arbitration gate, the first VCOM electrode segment with only one of the sensor drive signal and the display drive signal.
3 Assignments
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Accused Products
Abstract
A display device having an integrated capacitive proximity sensor comprises a plurality of sensor electrodes disposed as part of a display element of the display device. The plurality of sensor electrodes is configured for performing both sensor and display functions of the display device. The display device also comprises a sensor drive mechanism coupled with the plurality of sensor electrodes and configured for driving a first electrical signal on a first at least one sensor electrode of the plurality of sensor electrodes. The sensor drive mechanism comprises at least one memory element that is configured for selecting drive excitation information for the first at least one sensor electrode. The display device also comprises a display drive mechanism coupled with the plurality of sensor electrodes and configured for driving a second electrical signal on a second least one sensor electrode of the plurality of sensor electrodes.
94 Citations
17 Claims
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1. A display device having an integrated capacitive proximity sensor, said display device comprising:
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a plurality of common voltage (VCOM) electrode segments comprising a first VCOM electrode segment and a second VCOM electrode segment, wherein the plurality of VCOM electrode segments is disposed as part of a display element of the display device, and wherein the plurality of VCOM electrode segments is configured for performing both transmitter sensor electrode functions of a transcapacitive sensor and VCOM electrode display functions of the display device; a first display drive gate; a first plurality of sub-pixel transistors comprising; a plurality of drains coupled to the first VCOM electrode segment; and a plurality of gates coupled to an output of the first display drive gate; a sensor drive mechanism comprising a first row output configured to select the first VCOM electrode segment to perform the transmitter electrode functions; a display drive mechanism comprising a first row output for driving the first display drive gate; and an arbitration mechanism configured to prevent a sensor drive signal and a display drive signal from being simultaneously driven on the first VCOM electrode segment, the arbitration mechanism comprising; a first arbitration gate driven by the first output row of the sensor drive mechanism; and a first plurality of transistors that drive, based on an output of the first arbitration gate, the first VCOM electrode segment with only one of the sensor drive signal and the display drive signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of integrated capacitive sensing and displaying, said method comprising:
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driving a first display drive gate by a first row output of a display drive mechanism, wherein the first display drive gate comprises an output coupled to a plurality of gates of a first plurality of sub-pixel transistors, and wherein the first plurality of sub-pixel transistors comprises a plurality of drains coupled to the first sensor electrode of a plurality of sensor electrodes, wherein the plurality of sensor electrodes is disposed as a part of a display element of a display device and is configured for performing both transmitter sensor electrode functions of a transcapacitive sensor and common voltage (VCOM) electrode display functions of said display device; driving a first arbitration gate of an arbitration mechanism by a first row output of a sensor drive mechanism, wherein the first row output of the sensor drive mechanism is configured to select the first sensor electrode to perform the transmitter sensor electrode functions; driving, by a first plurality of transistors of the arbitration mechanism and based on an output of the first arbitration gate, the first sensor electrode with only one of a display drive signal and a sensor drive signal such that the display drive signal and the sensor drive signal are not simultaneously driven on the first sensor electrode of the plurality of sensor electrodes. - View Dependent Claims (11, 12, 13)
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14. A method of creating a display device having an integrated capacitive proximity sensor, said method comprising:
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forming a plurality of sensor electrodes comprising a first sensor electrode and a second sensor electrode as part of a display element of said display device, wherein the plurality of sensor electrodes is configured for performing both transmitter sensor electrode functions of a transcapacitive sensor and common voltage electrode display functions of the display device; disposing a first display gate; disposing a first plurality of sub-pixel transistors comprising; a plurality of drains coupled to the first sensor electrode; and a plurality of gates coupled to an output of the first display drive gate; disposing a sensor drive mechanism as part of the display element and comprising a first row output configured to select the first sensor electrode to perform the transmitter electrode functions; disposing a display drive mechanism as part of the display element and comprising a first row output for driving the first display drive gate; and disposing an arbitration mechanism as part of the display element and configured to prevent a sensor drive signal and a display drive signal from being simultaneously driven the first sensor electrode, the arbitration mechanism comprising; a first arbitration gate driven by the first output row of the sensor drive mechanism; and a first plurality of transistors that drive, based on an output of the first arbitration gate, the first sensor electrode segment with only one of the sensor drive signal and the display drive signal. - View Dependent Claims (15, 16, 17)
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Specification