Chaning iPhone LCD backlight

Hi guys

I recently started doing iPhone screen refurbish, I have messed up screens when I was cleaning glues(OCA), the screens would work fine but the liquid I used to clean screens actually went inside, I'm now looking at fixing them, I was told by one of my friend that its not worth fixing them and screens wont look normal after fixing them, I also have other screens that have good backlights but I'm assuming that they cannot be used as they are layer in one piece

What you people your recommendations on changing screens backlights?

Thank you in advance.