How to prevent LOCA leak into the backlight

Hi guys,

I still could not find a technique that would work every time to prevent LOCA leak into the backlight. I know already that for some phones you could remove backlight before applying LOCA and put it back again after you finish. But in some cases the risk is too high to remove the backlight because you could damage the LCD.

What is your technique? Have you tried to apply LOCA sealant around the edges where LCD and backlight meet? What about the tape method when you apply tape around each edge? What works best? Thanks!