Why there are horizontal white lines in my phone after screen replace?

Hello!I just replaced my alcatel idol 3 screen.I made everything correctly.When I turn on the phone I see horizontal short lines that change length during navigation.Another strange thing is that when I unlock the screen the lines disappear totally for nearly 1/4 or half a second,and then appear again.The white lines do not flickerand change length and width only during navigation. Please can anyone help me or give me an advice? I'll attach the picture of the phone.Thank you!!