Capcitive touch panel with simultaneously enabled x- and y-direction sensor circuits wherein in each sensor circuit the drive line is interdigitated with a plurality of sense lines

Abstract

There is offered a signal processing circuit of the electrostatic capacity type touch panel which can eliminate duplication of components to reduce a cost of the components. A touch panelis formed on a glass substrate. Sensor circuitsA andB are arrayed in a Y direction, and sensor circuitsC andD are arrayed in an X direction on the periphery of the touch pane. Serial clock terminals SCL of the sensor circuitsA-D are connected to a serial clock lineall together, while serial data terminals SDA are connected to a serial data lineall together. A microcomputeris disposed on a PCB substrate outside the glass substrate. Data communication can be performed between the microcomputerand the sensor circuitsA-D through the serial clock lineand the serial data line