[Q] Lg G2 strange blue verticle line on display topic

I have a lg g2 phone. The phone itself use to be sprint version ls980 but changed the motherboard and lcd to international version d802.

Now after twrp im seeing this blue line on the display. I tried all the kernals and non works. The screen is lgd. And it can be seen around black colour only. It dissappears infront of white red or other colours.

search the whole net but didnt find a solution.