An electrostatic tactile display with a projected capacitive touchscreen integrated into a single panel was demonstrated. Every electrode on the panel is driven for both tactile presentation and the touch sensor. The functions are both time and spatially multiplexed, and a reference-node-driven high-pass filter in the touch controller filters out the noise from the tactile driving signals.
SUMMARYWe present an electrostatic tactile display for stimulus localization. The 240-Hz electrostatic force was generated by the beat phenomenon in a region where excited X electrodes cross excited Y electrodes, which presents localized tactile sensation out of the entire surface. A 10.4-in. visual-tactile integrated display was successfully demonstrated. key words: tactile display, electrostatic force, beat phenomenon, multi touch, user experience
We propose an electrostatic tactile display, which presents regional stimulation. The 240-Hz electrostatic force is generated by the beat phenomenon in a region where excited X electrodes cross excited Y electrodes, which presents tactile sensation to users. This display can accommodate multi-touch tactile interaction with visual information.Author Keywords tactile display; electrostatic; beat phenomenon; multi touch; user experience; human-computer interaction; human-display interaction.
We demonstrated a 10.4-in on-cell touch-panel LCD using an ITO layer formed on a color filter substrate as a capacitive sensor. To enhance noise immunity for larger capacitive sensors, we developed a correlated noise subtraction method, which improves the signalto-noise ratio even under an environment where noise frequency coincides with signal frequency.
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