17933808. ARCHITECTURE FOR DIFFERENTIAL DRIVE AND SENSE FOR TOUCH SENSOR PANEL simplified abstract (Apple Inc.)

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ARCHITECTURE FOR DIFFERENTIAL DRIVE AND SENSE FOR TOUCH SENSOR PANEL

Organization Name

Apple Inc.

Inventor(s)

Sagar R. Vaze of San Jose CA (US)

Marduke Yousefpor of San Jose CA (US)

ARCHITECTURE FOR DIFFERENTIAL DRIVE AND SENSE FOR TOUCH SENSOR PANEL - A simplified explanation of the abstract

This abstract first appeared for US patent application 17933808 titled 'ARCHITECTURE FOR DIFFERENTIAL DRIVE AND SENSE FOR TOUCH SENSOR PANEL

Simplified Explanation

The patent application describes a method to reduce noise in touch and display systems of a touch screen through the use of differential driving and sensing techniques. Here are the key points:

  • The touch sensor panel consists of column and row electrodes routed vertically to one edge of the panel.
  • The touch sensor panel can be divided into multiple banks.
  • Routing traces for rows can be implemented using four routing tracks per column for three banks.
  • The arrangement of routing traces within routing tracks improves optical characteristics and reduces routing trace resistances and loading.
  • Interconnections between routing traces and row electrodes can have different patterns like chevron, S-shape, or hybrid patterns.
  • Differential sense routing is used to reduce cross-coupling within the touch sensor panel.
  • Staggering differential drive signals helps to reduce parasitic signal loss.

Potential applications of this technology:

  • Touchscreen devices such as smartphones, tablets, and laptops.
  • Interactive displays in public spaces like museums, retail stores, and airports.
  • Industrial control panels and touchscreens in automotive applications.

Problems solved by this technology:

  • Reduces noise in touch and display systems, resulting in improved accuracy and reliability of touch input.
  • Minimizes cross-coupling within the touch sensor panel, leading to better signal isolation and reduced interference.

Benefits of this technology:

  • Improved touch accuracy and responsiveness.
  • Enhanced display quality with reduced noise.
  • Increased reliability and durability of touchscreens.
  • Better signal isolation and reduced interference.


Original Abstract Submitted

Differential driving and/or differential sensing can reduce noise in the touch and/or display systems of a touch screen. In some examples, the touch sensor panel can include column and row electrodes routed vertically to a first edge of the touch sensor panel. In some examples, a touch sensor panel can be divided into banks. In some examples, the routing traces for rows can be implemented using four routing tracks per column for three banks. In some examples, the arrangement of routing traces within routing tracks can improve optical characteristics and/or reduce routing trace resistances and loading. In some examples, interconnections between routing traces and row electrodes can have a chevron pattern, an S-shape pattern, or a hybrid pattern. In some examples, differential sense routing can reduce cross-coupling within the touch sensor panel. In some examples, staggering differential drive signals can reduce parasitic signal loss.

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