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US 2014/0192012 A1Published application
Display device with touch detection function, method for driving display device with touch detection function, and electronic apparatus
AssigneeJapan Display Inc.
InventorHayato Kurasawa
Life of this patent
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Abstract
According to an aspect, a display device with a touch detection function includes a drive electrode driver and a source selector unit. The drive electrode driver applies a touch driving signal to a drive electrode opposed only to a pixel electrode corresponding to a non-selection signal line in which the application of the pixel signal is not selected by the source selector unit, among pixel electrodes selected by one scanning signal by the gate driver.
Claims15
A display device with a touch detection function comprising:
- a substrate;
- a plurality of pixel electrodes arranged in a matrix above a plane parallel to the substrate;
- a plurality of signal lines that extend above a plane parallel to a surface of the substrate and supply a pixel signal for displaying an image to the plurality of pixel electrodes;
- a display function layer that exerts an image display function based on the pixel signal;
- a plurality of drive electrodes that are opposed to the plurality of pixel electrodes in a vertical direction orthogonal to the surface of the substrate, and are arranged to be scanned in a direction different from a direction along which the plurality of signal lines extend;
- a plurality of touch detection electrodes that are opposed to the plurality of drive electrodes in the vertical direction and capacitively coupled with the plurality of drive electrodes;
- a gate driver that applies a scanning signal for selecting the plurality of pixel electrodes;
- a drive electrode driver that applies a touch driving signal for touch detection to the plurality of drive electrodes;
- a source driver that applies the pixel signal to the plurality of pixel electrodes;
- and
- a source selector unit that selects a signal line to which the source driver applies the pixel signal among the plurality of signal lines, wherein
- the drive electrode driver applies the touch driving signal to a drive electrode opposed only to a pixel electrode corresponding to a non-selection signal line in which the application of the pixel signal is not selected by the source selector unit, among pixel electrodes selected by one scanning signal by the gate driver.
9 more elements
A method for driving a display device with a touch detection function, the method comprising:
- in a period in which a plurality of pixel electrodes are selected by one scanning signal by a gate driver, applying a display driving signal for display to a drive electrode when an application of a pixel signal to a signal line is selected by a source selector unit;
- applying a touch driving signal for touch detection to the drive electrode when application of the pixel signal to the signal line is not selected by the source selector unit;
- and outputting a touch detection signal corresponding to an external proximity object approaching from the outside from a plurality of touch detection electrodes three-dimensionally crossing the plurality of drive electrodes and forming capacitance at the three-dimensionally crossing portion.
An electronic apparatus having a display device with a touch detection function capable of detecting an external proximity object, the display device with a touch detection function comprising:
- a substrate;
- a plurality of pixel electrodes arranged in a matrix above a plane parallel to the substrate;
- a plurality of signal lines that extend above a plane parallel to a surface of the substrate and supply a pixel signal for displaying an image to the plurality of pixel electrodes;
- a display function layer that exerts an image display function based on the pixel signal;
- a plurality of drive electrodes that are opposed to the plurality of pixel electrodes in a vertical direction orthogonal to the surface of the substrate, and are arranged to be scanned in a direction different from a direction along which the plurality of signal line extend;
- a plurality of touch detection electrodes that are opposed to the drive electrodes in the vertical direction and capacitively coupled with the plurality of drive electrodes;
- a gate driver that applies a scanning signal for selecting the plurality of pixel electrodes;
- a drive electrode driver that applies a touch driving signal for touch detection to the plurality of drive electrodes;
- a source driver that applies the pixel signal to the plurality of pixel electrodes;
- and
- a source selector unit that selects a signal line to which the source driver applies the pixel signal among the plurality of signal lines, wherein
- the drive electrode driver applies the touch driving signal to a drive electrode opposed only to a pixel electrode corresponding to a non-selection signal line in which the application of the pixel signal is not selected by the source selector unit, among pixel electrodes selected by one scanning signal by the gate driver.
9 more elements
Dependencies are inferred from the claim text.