Touchscreen tags based on thin-film electronics for the Internet of Everything
Creators
- 1. imec
- 2. Cartamundi Digital
- 3. TNO
- 4. Cartamundi
Description
Capacitive touchscreens are increasingly widespread, featuring in mobile phones and tablets, as well as everyday objects such as
cars and home appliances. As a result, the interfaces are uniquely placed to provide a means of communication in the era of the
Internet of Everything. Here, we show that commercial touchscreens can be used as reader interfaces for capacitive coupled data
transfer. The transfer of data to the touchscreen is achieved using a 12 bit thin-film capacitive radio-frequency identification tag
powered by a thin-film battery or a thin-film photovoltaic cell that converts light from the screen. The thin-film integrated circuit
has a 0.8 cm2 on-chip monolithic antenna, employs 439 transistors and dissipates only 31 nW of power at a supply voltage of
600 mV. The chip has an asynchronous data rate of up to 36 bps, which is limited by the touchscreen readout electronics.
Files
ctoken_ZOTERO-EU.pdf
Files
(1.5 MB)
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