Patent ID: 8363034
Filing Date: 2013-01-29
Classification: G06F

Abstract:
1. A touch screen device comprising: a panel main body including a grid array of transmission electrodes and reception electrodes and defining a touch surface; a transmitter configured to apply a drive signal to each transmission electrode; a receiver configured to receive a charge/discharge current signal generated in each reception electrode in response to the drive signal applied to the transmission electrode, and thereby generate a level signal for each intersection between the transmission electrodes and reception electrodes; a lead unit including a plurality of lead wires connecting the transmission electrodes to the transmission unit, a length of each lead wire varying depending on a positional relationship between each lead wire and the transmission unit; and CR time constant elements connected to the lead unit to adjust CR time constants of the transmission electrodes, the CR time constant of each time constant element being selected to be greater as a length of a lead wire for the corresponding transmission electrode increases.