DISPLAY DEVICE AND ELECTRONIC UNIT
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Accused Products
Abstract
The display device with high detection accuracy includes: display pixel electrodes; a common electrode; a display function layer; a display control circuit performing image display control by applying a pixel voltage to each of the display pixel electrodes and applying a common drive voltage to the common electrode, the common drive voltage inverting in synchronization with a drive cycle of the image display control; a touch detection electrode cooperating with the common electrode to form a capacitor; and a touch detection circuit detecting an external proximity object, based on a detection signal obtained from the touch detection electrode in response to the common drive voltage applied to the common electrode. The touch detection circuit corrects the detection signal based on a gray scale of the image signal at the time of acquisition of the detection signal, and performs the detection operation.
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Citations
31 Claims
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1-20. -20. (canceled)
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21. A display panel with a touch detection function, the display panel comprising:
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a signal generation section selecting one pulse period from a plurality of pulse periods prepared beforehand, and generating a synchronization signal including a series of pulses appearing at the selected pulse period; a display section performing display based on the synchronization signal; and a touch detection section performing touch detection operation based on the synchronization signal. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28)
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29. A method of driving a display panel with a touch detection function, the method comprising:
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selecting one pulse period from a plurality of pulse periods prepared beforehand, and generating a synchronization signal that includes a series of pulses appearing at the selected pulse period; performing display for one screen, and performing touch detection operation, based on the series of pulses of the synchronization signal; and switching display of a screen, for each predetermined frame period.
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30. A drive circuit comprising:
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a signal generation section selecting one pulse period from a plurality of pulse periods prepared beforehand, and generating a synchronization signal that includes a series of pulses appearing at the selected pulse period; a display drive section driving a display panel based on the synchronization signal; and a touch-detection drive section driving a touch panel based on the synchronization signal.
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31. An electronic unit including a display panel with a touch detection function, and a control section performing operation control using the display panel, the display panel comprising:
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a signal generation section selecting one pulse period from a plurality of pulse periods prepared beforehand, and generating a synchronization signal including a series of pulses appearing at the selected pulse period; a display section performing display based on the synchronization signal; and a touch detection section performing touch detection operation based on the synchronization signal.
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Specification