i'm working on it for tha last days and i can't find a suitable solution...
If that is the case, then you should be able to give us examples of devices you looked at which were not suitable. Please give us some information about what is suitable. Otherwise, you're asking us to do the same time-wasting activity you claim to have already done, and with less information that you have - basically you're asking us to do the impossible.
For example, my answer is this: https://www.sparkfun.com/products/8884
- or maybe even a touch screen. But that might be overkill for your project, there is no way for us to know, with the information given.