4-wire touch panel ICs enhance touch sense operability

ROHM's touch panel controller ICs include a calibration function which absorbs characteristic changes due to temperature, aging, and production variations. This enhances flexibility and reliability, whilst the proprietary technology and compact design enable component reduction and easier, user-friendly operability such as gesture input when wearing gloves.

Although capacitive touch panels capable of multi-point detection are increasing in popularity, there is still much demand for lower cost resistive touch technology in digital cameras, car navigation systems, and other applications. The resistive touch method typically provides a 1-point detection operation using a stylus/pen or for simple button selection. However, ROHM has successfully developed and mass-produced 2-point detection controller ICs that have been integrated in a wide range of applications.

The BU210xx series of 4-wire resistive touch panel controller ICs are available now, with an automotive-grade version also available.