Bending Wave
Bending wave works by recognizing the vibrations created when the glass is touched at a given position. Consisting only of a glass overlay mounted in front of the display, together with a small electronic controller board. Bending wave technique provides optical qualities, durability, and stability, with dragging capability. It also supports use via stylus, glove and fingernail. It is resistant to water and other contaminants on the screen, can be scaled from PDA to 42-inch displays, and provides palm rejection during signature capture.
Bending wave technique is used by Elo in their Acoustic Pulse Recognition (APR) touch series and by 3M in their Dispersive Signal Touch series.
Advantages
- Highest quality of underlying image.
- Very high light transmittance (no conductive layers, only glass between end user and image)
- Excellent anti-glare, when chemically etched glass applied.
- Can be activated with almost any device with finger, glove, pen, credit card, etc.
- Higher accuracy than other technologies.
- No wear mechanism.
- Works even with scratches.
- Very high durability and reliability.
- One time factory calibration.
- Can be sealed to NEMA 4/IP 65 standards, making it ideal for extreme conditions or environments.
- Resistant to water, dust and grease.
- Palm rejection for signature capture.
Disadvantages
- Few major suppliers
Touch functionality
- Single touch
Product types
- Overlay
Applied in:
APR ELO 1900L Touch Computer
Partners
