Display device with touch detection function, touch detection device, and electronic unit
View Patent ↗A display device with a touch detection function including a plurality of touch detection electrodes arranged in parallel to extend in one direction, formed with a predetermined electrode pattern including an electrode portion and aperture portions, and each outputting a detection signal based on a change of an electrostatic capacitance in response to an external proximity object, a plurality of display elements formed in a layer different from a layer provided with the touch detection electrodes, and arranged by a predetermined number in a width direction in a region corresponding to the touch detection electrode, and a plurality of dummy electrodes arranged in an inter-detection-electrode region of the plurality of touch detection electrodes. The aperture portions are provided to allow an arrangement area ratio of the touch detection electrode to be almost equal to an arrangement area ratio of the dummy electrodes in the inter-detection-electrode region.
1. A display device with a touch detection function, comprising:
a plurality of display elements;
a plurality of touch detection electrodes arranged in parallel and extending along one direction; and
a plurality of dummy electrodes disposed in an inter-detection electrode-region that is a region between adjacent touch detection electrodes,
wherein,
each of the display elements configures a display pixel including at least a red display element, a green display element, and a blue display element
the inter-detection-electrode region, including the dummy electrodes, is divided into a plurality of dummy electrode blocks by a plurality of gaps including (a) a first gap, which extends in a first direction that is an arrangement direction of the red display element, the green display element, and the blue display element, and (b) a second gap, which extends in a second direction intersecting with the first direction,
the touch detection electrodes and the dummy electrodes are arranged in both of a display region and a frame region, the display region being a region corresponding to a region in which the display elements are arranged, the frame region being outside the display region, and
an area of each of the dummy electrode blocks in the display region and an area of each of the dummy electrode blocks in the frame region are substantially the same.
2. The display device with a touch detection function according to claim 1 , wherein:
the touch detection electrodes and the dummy electrodes are arranged in a same layer, and
the dummy electrodes are uniformly arranged in both of the display region and the frame region.
3. The display device with a touch detection function according to claim 1 , wherein:
the dummy electrodes are configured of a plurality of dummy electrode unit cells,
each of the dummy electrode unit cells is arranged in a position corresponding to a respective display element, and
a size of each of the dummy electrode unit cells corresponds to a size of the display pixel.
4. The display device with a touch detection function according to claim 1 , wherein a shape of each of the dummy electrode blocks in the display region is substantially a same as a shape of each of the dummy electrode blocks in the frame region.