Patent ID: 8446663
Filing Date: 2013-05-21
Classification: G02F,Y10T

Abstract:
1. An electronic paper display device, comprising: a first substrate having a first electrode made of transparent material and formed thereon; a second substrate arranged opposite to the first substrate with a predetermined space and having a second electrode formed thereon; a display element layer formed between the first substrate and the second substrate and having a plurality of display elements arranged thereon, the display elements having optical characteristics changed by voltage applied to the first and second electrodes; and vibration parts formed on the first substrate or the second substrate and for enhancing rotation of rotating bodies by applying vibrations to the display elements by the voltage applied to the first and second electrodes, wherein vibration parts are made of piezoelectric ceramic including a composite piezoelectric material of PZT (Lead zirconate titanate, Pb[ZrxTi1−x]O3 0<x<1) or PMN-PNN-PZT(Pb(Mg⅓Nb⅔)×(Ni⅓Nb⅔)yZrTiO3.