Tactile Touch Display Using Segmented-Electrode Array with Tactile Strength Stabilization

Hiroshi HAGA  Takuya ASAI  Shin TAKEUCHI  Harue SASAKI  Hirotsugu YAMAMOTO  Koji SHIGEMURA  

IEICE TRANSACTIONS on Electronics   Vol.E104-C   No.2   pp.64-72
Publication Date: 2021/02/01
Publicized: 2020/07/22
Online ISSN: 1745-1353
DOI: 10.1587/transele.2020DII0005
Type of Manuscript: INVITED PAPER (Special Section on Electronic Displays)
Category: Electronic Displays
electrostatic tactile display,  electrostatic force,  touch sensor,  human body,  tactile crosstalk,  localized tactile texture,  

Full Text: FreePDF

We developed an 8.4-inch electrostatic-tactile touch display using a segmented-electrode array (30×20) as both tactile pixels and touch sensors. Each pixel can be excited independently so that the electrostatic-tactile touch display allows presenting real localized tactile textures in any shape. A driving scheme in which the tactile strength is independent of the grounding state of the human body by employing two-phased actuation was also proposed and demonstrated. Furthermore, tactile crosstalk was investigated to find it was due to the voltage fluctuation in the human body and it was diminished by applying the aforementioned driving scheme.