Patent ID: 6597348
Filing Date: 2003-07-22
Classification: G02F,G06F

Abstract:
An information-processing device comprising:a field sequential display unit having a back light to supply three-color light and an image display part which forms an image for one frame by a sequential time-sharing display of three subframes corresponding to said three-color light; a touch panel having an optical guide plate of a transparent material, an optical sensor array whose light receiving surface is opposite to a first side of said optical guide plate, a lens sheet whose light emitting surface is opposite to a second side of said optical guide plate which is opposite to said first side, and an illuminating means to illuminate a plane of said lens sheet; and an input pen to touch a surface of said optical guide plate, a portion of said input pen comprises a transparent material which has a refractive index equal to or higher than that of the transparent material of said optical guide plate.