A transparent visuo-haptic input device with optical waveguide based thin film display, sensor and surface actuator

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We demonstrate a transparent visuo-haptic input device. The device consists of optical waveguide based thin film display, sensor, and surface actuator. Highly transparent flexible display and sensor with high are fabricated by using Bisphenol A ethoxylate diacrylate (n(a) = 1.5647 @ 632 nm) and Tetra diacrylate (n(a) = 1.5031 @ 632 nm) for core and clad, respectively. The display and sensor are thin (thickness: < 70 mu m), highly transparent (optical transmittance: as high as 90%) and designed as a form of 3 x 9 matrix. Surface actuator is fabricated as a combination of ITO electrode coated two rectangular glass plates, which are sandwiched with a constant air gap. The surface actuator produces electrically induced dynamic deformation responses of displacement as high as 157 mu m and output force as large as 60 mN under a sinusoidal input voltage signal of 2 kV at 140 Hz. The visuo-haptic display integrating the three functional components is capable of realizing sufficient and human perceivable vibro-tactile response on a touch interface for QWERTY keypad. (C) 2015 Elsevier B.V. All rights reserved.
Publisher
ELSEVIER SCIENCE SA
Issue Date
2015-09
Language
English
Article Type
Article
Keywords

TACTILE DISPLAY; THRESHOLDS; ARRAY

Citation

SENSORS AND ACTUATORS A-PHYSICAL, v.233, pp.47 - 53

ISSN
0924-4247
DOI
10.1016/j.sna.2015.06.028
URI
http://hdl.handle.net/10203/239963
Appears in Collection
ME-Journal Papers(저널논문)
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