Capacitive touch panel detecting false touch

[Boopathi]

Hi All,
I'm using capacitive touch panel LCD for my project. My project does not have earth connection. Due to this, touch panel detecting false touch frequently. Touch panel having FT5446 touch controller.

1) When connecting LCD casing to earth terminal, touch is working properly.
2) Connected to different power supplies without earth, touch function is not working.
3) Connected to battery, touch function is working properly.

Due to project requirement i can't use earth. Can anyone give me some suggestion to overcome this issue.

 

[HellasTechn]

I suggest you make sure that the problem is not caused by some error in the PCB design or PCB related in general.