'''++Vinayak Mohakud++''' could be something shortened out or streaking on the diffuser sheets. We will have to see what it looks like. Post some good pictures of this with your QUESTION.
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If it is something that has shortened then we will have to dig a lot further. If it is the diffuser sheet, you will have to disassemble the panel and replace the sheet. Neither one of those things are any fun :-(
For the future you now know to never spray anything directly on a screen. Always spray it on a cloth (like microfiber clothes) and then wipe the screen gently.