17933783. ARCHITECTURE FOR DIFFERENTIAL DRIVE AND SENSE TOUCH TECHNOLOGY simplified abstract (Apple Inc.)
ARCHITECTURE FOR DIFFERENTIAL DRIVE AND SENSE TOUCH TECHNOLOGY
Organization Name
Inventor(s)
Sagar R. Vaze of San Jose CA (US)
Marduke Yousefpor of San Jose CA (US)
Amit Nayyar of Saratoga CA (US)
ARCHITECTURE FOR DIFFERENTIAL DRIVE AND SENSE TOUCH TECHNOLOGY - A simplified explanation of the abstract
This abstract first appeared for US patent application 17933783 titled 'ARCHITECTURE FOR DIFFERENTIAL DRIVE AND SENSE TOUCH TECHNOLOGY
Simplified Explanation
The patent application describes a method to reduce noise in touch screens using differential driving and sensing techniques. The touch screen includes column and row electrodes arranged vertically in the active area. Metal mesh is used to implement the touch electrodes and routing traces in the first and second metal layers. The metal mesh is designed to have overlapping portions to improve optical performance. The dielectric layer can have increased thickness and reduced dielectric constant, and the metal mesh in the first metal layer can be flooded with a transparent conductive material. Routing traces can be placed beneath touch electrodes or flooded with a transparent conductive material separately from the metal mesh. Interleaving touch electrodes within a touch node is used to enhance differential cancelation.
- Differential driving and sensing techniques are used to reduce noise in touch screens.
- Column and row electrodes are arranged vertically in the touch screen's active area.
- Metal mesh is used to implement touch electrodes and routing traces in the first and second metal layers.
- Overlapping portions of the metal mesh are designed to improve optical performance.
- The dielectric layer can have increased thickness and reduced dielectric constant.
- Metal mesh in the first metal layer can be flooded with a transparent conductive material.
- Routing traces can be placed beneath touch electrodes or flooded with a transparent conductive material separately from the metal mesh.
- Interleaving touch electrodes within a touch node improves differential cancelation.
Potential Applications
This technology can be applied in various touch screen devices, including smartphones, tablets, laptops, and interactive displays.
Problems Solved
The technology addresses the issue of noise in touch screens, which can affect the accuracy and reliability of touch input.
Benefits
- Reduced noise in touch screens improves the accuracy and reliability of touch input. - Improved optical performance enhances the visual appearance of the touch screen. - Differential cancelation and interleaving of touch electrodes enhance noise reduction.
Original Abstract Submitted
Differential driving and/or sensing can reduce noise in a touch screen. In some examples, the touch screen can include column and row electrodes routed vertically in the active area. In some examples, the touch electrodes and/or routing traces can be implemented using metal mesh in first and second metal layers. To improve optical performance, overlapping portions of metal mesh can be designed to provide an appearance of uniform width/area. In some examples, a dielectric layer can have an increased thickness and/or a reduced dielectric constant, and/or metal mesh in the first metal layer can be flooded with a transparent conductive material. In some examples, routing traces can be disposed beneath touch electrodes and/or metal mesh for touch electrodes can be flooded with a transparent conductive material without flooding metal mesh for routing traces. In some examples, touch electrodes can be interleaved within a touch node to improve differential cancelation.
