ELECTRICAL WRITING BOARD

摘要

An electrical writing board includes a bottom color plate, an electrochromic board, a touch panel, and a driving circuit module. The electrochromic board includes a number of electrochromic units and covers the bottom color plate. The touch panel covers the electrochromic board and outputs a touch signal when the touch panel is touched. The driving circuit module is electrically connected between the electrochromic board and the touch panel, and enables a part of the electrochromic units according to the touch signal to display handwriting. The handwriting displaying on the electrochromic board is the same as a touch route sensed by the touch panel.

主权项

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; each electrochromic unit comprising a first electrochromic pixel displaying a red color, a second electrochromic pixel displaying a green color, and a third electrochromic pixel displaying a blue color; a touch panel covered on the electrochromic board and 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 pixels 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.