Patent ID: 9152002
Filing Date: 2015-10-06
Classification: G02F

Abstract:
1. An electrical writing board, comprising: a bottom color plate; an electrochromic board covered on the bottom color plate and comprising a plurality of electrochromic units made of electrochromic material, the electrochromic board configured to reversibly changing color when triggered by an electrical potential to cause electrochemical redox reactions in the electrochromic material; a touch panel covered on the electrochromic board, the electrochromic board located between the bottom color plate and the touch panel, and the touch panel outputting a touch signal when the touch panel is touched; and a driving circuit module electrically connected between the electrochromic board and the touch panel, and enabling a part of the electrochromic units according to the touch signal to display a handwriting; wherein the handwriting displaying on the electrochromic board is the same as a touch route sensed by the touch panel.