Shielding for Electronic Device Displays With Touch Sensors

The patent application describes an electronic device with a display and touch sensors, where shielding layers are used to prevent noise from the display affecting touch sensor performance.

Shielding layers, such as conductive mesh structures and transparent conductive films, are placed between the display and touch sensors.
Active driving scheme involves inverting noise signals from the display and driving them back onto the shielding structures to prevent interference with touch sensors.
Passive biasing scheme involves biasing the shielding structures to a power supply voltage.

Potential Applications

The technology described in the patent application could be used in various electronic devices such as smartphones, tablets, and touch screen monitors to improve touch sensor performance by reducing noise interference from the display.

Problems Solved

This technology addresses the issue of noise interference from the display affecting the performance of touch sensors, leading to more accurate and reliable touch input on electronic devices.

Benefits

The use of shielding layers and active/passive driving schemes helps to enhance the overall user experience by improving the responsiveness and accuracy of touch sensors on electronic devices.

Potential Commercial Applications

Enhancing touch sensor performance in smartphones and tablets
Improving touch screen monitor accuracy and reliability
Enhancing user experience in interactive kiosks and digital signage displays

Original Abstract Submitted

An electronic device may have a display with touch sensors. One or more shielding layers may be interposed between the display and the touch sensors. The shielding layers may include shielding structures such as a conductive mesh structure and/or a transparent conductive film. The shielding structures may be actively driven or passively biased. In the active driving scheme, one or more inverting circuits may receive a noise signal from a cathode layer in the display and/or from the shielding structures, invert the received noise signal, and drive the inverted noise signal back onto the shielding structures to prevent any noise from the display from negatively impacting the performance of the touch sensors. In the passive biasing scheme, the shielding structures may be biased to a power supply voltage.

18514934. Shielding for Electronic Device Displays With Touch Sensors simplified abstract (Apple Inc.)

Contents

Shielding for Electronic Device Displays With Touch Sensors

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