Cypress Semiconductor Corp. has developed a highly accurate passive stylus support for capacitive touchscreen technology with a 1mm accurate tip. Cypress’s TrueTouch touchscreen solution is poised to transform the stylus market for the next generation of capacitive touchscreen phones, allowing users additional levels of accuracy and control for text entry, keyboard, handwriting recognition and other productive functions for mobile applications. For example, stylus accuracy enables users to enter complex Asian characters and to point to ever-smaller icons used in today’s mobile phone user interfaces.
Stylus support has been traditionally limited to resistive touchscreens, which require the user to apply pressure on a multilayer screen. This type of screen is vulnerable to scratches and exhibits poor visibility in sunlight. As a result, many mobile device manufacturers have moved to capacitive touchscreen technology. One limitation to further adoption of capacitive touchscreens however has been the lack of stylus support or, at best, having to use a large 3mm to 4mm stylus designed for large icon selection. Cypress’s highly accurate passive stylus solution makes it even more compelling for end customers to adopt capacitive touchscreens.
Cypress’s TrueTouch family includes single-touch, multitouch gesture and multitouch all-point offerings. Cypress was the first company to introduce multitouch all-point functionality, which can track an unlimited number of touches. This capability enables designers to create new usage models for products such as mobile handsets, portable media players (PMPs), GPS systems and other products, and has been in mass production since 2008.
Cypress recently announced its next-generation high performance TMA300 multitouch all-point family. This controller provides best-in-class scan times for true multifinger touch and superior signal-to-noise ratio for the most demanding touchscreen applications.
Cypress is demonstrating the new stylus capability for touchscreens, as well as peripheral and mass storage controllers and precision motion sensing technology for handsets, at the Mobile World Congress in Barcelona (February 15-18).
Cypress TrueTouch solution
Cypress
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