Shielding for Electronic Device Displays With Touch Sensors

The abstract describes an electronic device with a display and touch sensors, where shielding layers are used to prevent noise from the display affecting the touch sensor performance. The shielding layers include conductive mesh structures and transparent conductive films, which can be actively driven or passively biased to prevent noise interference.

Shielding layers are interposed between the display and touch sensors.
Shielding structures like conductive mesh structures and transparent conductive films are used.
Active driving scheme involves inverting circuits to drive noise signals back onto shielding structures.
Passive biasing scheme involves biasing shielding structures to a power supply voltage.

Potential Applications

The technology described in the patent application could be applied in various electronic devices such as smartphones, tablets, laptops, and touch screen monitors.

Problems Solved

This technology solves the problem of noise interference from the display affecting the performance of touch sensors, ensuring accurate and reliable touch input.

Benefits

The use of shielding layers with shielding structures helps improve the overall performance and responsiveness of touch sensors in electronic devices, providing a better user experience.

Potential Commercial Applications

The technology can be utilized in the consumer electronics industry for the development of advanced touch screen devices with improved touch sensitivity and accuracy.

Possible Prior Art

One possible prior art could be the use of shielding layers in electronic devices to reduce electromagnetic interference and improve signal quality.

Unanswered Questions

How does the active driving scheme compare to the passive biasing scheme in terms of effectiveness?

The active driving scheme actively drives noise signals back onto the shielding structures, while the passive biasing scheme simply biases the shielding structures to a power supply voltage. The effectiveness of each scheme may vary depending on the specific application and environmental factors.

What are the potential challenges in implementing this technology in large-scale production of electronic devices?

Some potential challenges in implementing this technology in large-scale production could include the cost of materials, complexity of manufacturing processes, and compatibility with existing production lines. Additionally, ensuring consistent performance across all devices and variations in operating conditions could be a challenge that needs to be addressed.

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.

20240086014.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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