has introduced TapTouch, a new solution that lowers the cost of capacitive touch implementation in high button count applications.
With a single 15-channel integrated circuit, Leadis' new TapTouch technology supports up to 56 independent touch zones. Company officials said that this functionality facilitates the integration of large numbers of capacitive touch buttons.
To enable multiple touch zones to share a single sensor input, TapTouch employs a two-tiered sensor structure which. Officials said that the host processor is able to determine which zone has been touched by interpreting which two sensor lines have been activated.
For touch zone determination, Leadis provides reference host code that may be adapted for a variety of different TapTouch configurations and applications.
Extending the capabilities of Leadis' LDS60xx family of button ICs, this latest offering allows product manufacturers to deploy touch technology into high button count applications that require large number of buttons. These applications include remote control and telephony applications.
Additionally, officials said that TapTouch can also be used in screen applications where end-users require icon selection and gesture recognition functions. These applications include mobile handsets and handheld games.
Unlike traditional architectures using one sensor per button, TapTouch leverages a two-layer sensor array. Officials said that this allows each sensor to support multiple touch zones, which may eliminate the need for multiple touch controllers.
Also, it enables continuous scanning of touch zones without the high power consumption, and supports icon selection and gesture-recognition functions. Moreover, the TapTouch solution is compatible with Leadis' integrated LED driver and haptics driver controller offerings.
“We believe that the combination of uncompromised user experience, ultra-low power consumption and a reduced bill-of-materials will quickly drive interest in TapTouch, particularly among the most visionary manufacturers,” said Alvin Wong, vice president and general manager for Touch Business Unit at Leadis Technology (News
Sunnyvale, California-based Leadis Technology designs, develops and markets analog and mixed-signal semiconductors.
Earlier this month, the company announced the sample availability of the five new members
of the PureTouch family of low power controllers designed for capacitive touch applications. These new members are LDS6003, LDS6005, LDS6023, LDS6025, and LDS6028.
Anshu Shrivastava is a contributing editor for TMCnet. To read more of Anshu's articles, please visit her columnist page.
Edited by Michelle Robart