Wireless Stand-Alone Trimodal Interactive Display Enabled by Direct Capacitive Coupling
Authors
Jihye Jang ; Seung Won Lee ; Seokyeong Lee ; Chang Eun Lee ; Eui Hyuk Kim ; Wookyeong Jin ; Sejeong Lee ; Youngkyung Kim ; Jin Woo Oh ; Youngdoo Jung ; HoYeon Kim ; Hyungseok Yong ; Jeongok Park ; Sangmin Lee ; Cheolmin Park
AC-to-AC power transfer ; direct capacitive coupling ; inverse piezoelectric sounds ; tactile vibration ; wireless stand-alone interactive displays
Abstract
With recent advances in interactive displays, the development of a stand-alone interactive display with no electrical interconnection is of great interest. Here, a wireless stand-alone interactive display (WiSID), enabled by direct capacitive coupling, consisting of three layers: two in-plane metal electrodes separated by a gap, a composite layer for field-induced electroluminescence (EL) and inverse piezoelectric sound, and a stimuli-responsive layer, from bottom to top, is presented. Alternating current power necessary for field-induced EL and inverse piezoelectric sound is wirelessly transferred from a power unit, with two in-plane electrodes remotely separated from the WiSID. The unique in-plane power transfer through the stimuli-sensitive polar bridge allows stand-alone operation of the WiSID, making it suitable for the wireless dynamic monitoring of medical fluids. Moreover, a haptic wireless stand-alone trimodal interactive display mounted on a human finger is demonstrated, whereby touch is wirelessly displayed in various outputs of EL, inverse piezoelectric sound, and tactile vibration, making it suitable for a wireless three-mode smart braille display.