Chosen Solution

Hello, Recently i repaired an ipad air(changed the touch glass) and now the ipad touch is not working in the left down corner. Sometimes it start working and then it stops again. The non working area is 2x 2 cm. I tried like 5 glasses and all have the same problem. What should be the solution? Is the lcd damaged or what? Update (11/14/2016)

Everything seems ok? Still didnt fix it, dont know what to do.

The LCD has nothing to do with the touchscreen. Check for any damage to the connector on the motherboard. Try another screen from another supplier and see if that helps, thinking you got some bad screens.