Cypress Replaces Resistive Touchscreens with Single Layer Touchscreen Sensors

Cypress Semiconductors enhanced the performance and responsiveness of its touchscreens CY8CTST241and CY8CTST242 by bringing in a single layer sensor panel in the place of the resistive sensor.

The enhanced TrueTouch, touch screen controllers offer the benefits of having a capacitive touchscreen at cost that match resistive touchscreens.

The capacitive touch screens score over the resistive screens on features such as improved intuitive user experience and readability, lower power, enhanced transmission and durability. Currently, due to the high cost of capacitive touchscreens they are not included in the design of feature phones that are priced at lower rates. With the introduction of the single-layer sensor in TrueTouch even low-priced feature phones can afford to feature the capacitive touchscreen in their design.

Cypress has come up with sophisticated algorithms to work with single layer sensors without bridges that give the user the same feel as if he is working on a two layer sensor. By cutting down the sensor to a single layer, the mobile manufacturers benefit by saving almost 30 % on the cost. The sensor is available for glass as well as film. The single sensor in TrueTouch exhibits improvement in accuracy and response time. It also requires a power of 3.6 mW in the active mode and shows a very good signal-to-noise ratio.