Patent ID: 6919881

Claim:
A digital display system, comprising: a digital board composed of a plurality of printed circuit boards arranged collectively to function as a single panel, wherein each of the printed circuit boards is printed with a grid array of touch-control traces, and a plurality of conductive coupling wires are formed to electrically interconnect terminals of the touch-control traces between adjacent printed circuit boards; a touch pen for allowing a user to use the touch pen to write on the digital board, whereby the digital board is urged to generate corresponding pixel coordinate signals; and a computer platform connected to the digital board through a communication interface of certain communication protocol, so as to receive the pixel coordinate signals generated from the digital board, and to convert the received signals into corresponding graphic files or print out writing provided on the digital board by the user wherein the electrical interconnections and the conductive coupling wires are configured: (1) to allow the plurality of printed circuit boards to be fabricated into a large-sized panel through the use of a currently-used jig, and (2) to allow the digital board to be flexibly enlarged in dimension without use of a newly-designed jig.