TABLET DEVICE WITH DISPLAY FUNCTION

摘要

PURPOSE:To shield a high frequency electric field applied from a light emission source and a voltage impressing part. CONSTITUTION:Metal plating 54 consisting of nickel or copper is applied to the surface of a lamp holder 52 for a fluorescent lamp 51 arranged on the periphery of a liquid crystal panel and grounded. Since a high frequency electric field radiated from the lamp 51 to the input face of a tablet is shielded, the generation of induced voltage on a detection pen existing on the input face of the table due to the high frequency electric field can be prevented and the misdetection of the coordinates of a detection pen tip can be prevented.