Micro-wire touch screen with unpatterned conductive layer

摘要

A touch-screen device is disclosed having a touch-sensitive area that includes a plurality of patterned driver electrodes, each having a plurality of patterned conductive electrically connected driver micro-wires. An unpatterned conductive layer that is unpatterned in the touch-sensitive area is in electrical contact with the driver micro-wires of the driver electrodes. A plurality of patterned sensor electrodes each includes a plurality of patterned conductive electrically connected sensor micro-wires. A dielectric layer is located between the driver electrodes and the sensor electrodes.

主权项

1. A touch-screen device having a touch-sensitive area, comprising:
a plurality of patterned driver electrodes in the touch-sensitive area, each driver electrode including a plurality of patterned conductive electrically connected driver micro-wires; a conductive layer that is unpatterned in the touch-sensitive area, the conductive layer in electrical contact with the driver micro-wires of the driver electrodes; a plurality of patterned sensor electrodes in the touch-sensitive area, each sensor electrode including a plurality of patterned conductive electrically connected sensor micro-wires; a dielectric layer located between the driver electrodes and the sensor electrodes; and a driver waveform having a period, and wherein the sheet resistance of the unpatterned conductive layer is sufficiently low that the time constant for charging or discharging the center of the open area between driver micro-wires in the driver electrode area is less than the period of the driver waveform.