OPTICAL SHEET

摘要

PURPOSE: A waveguide sheet in which a dome switch is equipped is provided to form a light diffusion pattern unit from an LED(Light Emitting Diode). CONSTITUTION: A light diffusing pattern unit(20) is formed in one side of a base sheet. The light diffusing pattern unit diffuses light. A printing unit(30) is formed in one side of the base sheet. The number, text, or pattern are printed on the printing unit. A contact unit(40) is formed in the poly dome backside of the base sheet. The contact unit is connected to the contact unit in a PCB(Printed Circuit Board).