3.5" Capacitive touch panel for I2C or SPI

[cmarty]

Hello.
For my project I'm trying to find 3.5" capacitive touch panel (digitizer) but without display. Just only the touch layer. It would be great if I can communicate with this touch layer by I2C or SPI interface and read out the thumb position.
Does anybody have some tips where this kind of electronic can be bought?

[joan]

eBay is probably a good source.

Perhaps http://www.buydisplay.com/

[cmarty]

Thanks for the link. But there are only the resistive touch panels.
I'm asking the forum because I've tried before to find(ebay, farnell, ...) some capacitive touch panel on the web, but i wasn't succesful.
What i found was on http://www.alibaba.com/product-detail/3 ... 12741.html
But for the first point of view it seems complicated to order just one piece. The documentation is also very rare.