| 摘要 |
PURPOSE: A pattern forming device of a light guide plate is provided to have a simple structure and reduce the occurrence of malfunctions. CONSTITUTION: A cutter(3) forms a pattern by etching a upper part of a light guide plate(1). A fixing member(4) fixes the cutter to a working area of the light guide plate and to a perpendicular and horizontal position. A pressing unit presses the cutter with the light guide plate to etch the same for a fixed period of time by using fixed data. The pressing unit comprises a rotating link(13) and a pressing member(14). The rotating link always move up and down by a fixed width by pressing the upper part of the cutter along a rotational radius of the lower part which rotates around a fixed shaft(12). The pressurization member periodically presses and rotates the upper part of the rotating link from one side. |
