Integrated pixel display and touch sensor
First Claim
Patent Images
1. An apparatus, comprising:
- one or more display layers within a liquid crystal display (LCD) display stack;
a plurality of sense electrodes within the LCD display stack, the plurality of sense electrodes configured to detect a touch input;
a reference voltage layer within the LCD display stack, the reference voltage layer comprising a plurality of electrically isolated drive lines and configured to provide a reference voltage for the one or more display layers and a drive signal detectable by the plurality of sense electrodes; and
the plurality of electrically isolated drive lines configured to be pulsed simultaneously to provide the reference voltage for the one or more display layers and each be pulsed one at a time to provide drive signals to the plurality of sense electrodes.
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Abstract
In one embodiment, an apparatus includes a display component comprising a plurality of pixels configured to display an image. The apparatus also includes a touch sensor component configured to detect a touch input. The apparatus additionally includes a touch-screen controller. The touch-screen controller is coupled to the touch sensor component and the display component. The touch-screen controller is configured to generate a drive signal for the touch sensor component using a portion of the display component.
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Citations
12 Claims
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1. An apparatus, comprising:
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one or more display layers within a liquid crystal display (LCD) display stack; a plurality of sense electrodes within the LCD display stack, the plurality of sense electrodes configured to detect a touch input; a reference voltage layer within the LCD display stack, the reference voltage layer comprising a plurality of electrically isolated drive lines and configured to provide a reference voltage for the one or more display layers and a drive signal detectable by the plurality of sense electrodes; and the plurality of electrically isolated drive lines configured to be pulsed simultaneously to provide the reference voltage for the one or more display layers and each be pulsed one at a time to provide drive signals to the plurality of sense electrodes. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An apparatus, comprising:
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a display component comprising a plurality of pixels configured to display an image; a touch sensor component comprising a plurality of drive electrodes and a plurality of sense electrodes, the touch sensor component configured to detect a touch input; a touch-screen controller coupled to the touch sensor component and the display component, the touch-screen controller configured to pulse the drive electrodes simultaneously to provide a reference voltage for the display component and pulse the drive electrodes one at a time to provide drive signals to the plurality of sense electrodes. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification