@badalpriya " which the screen has got damaged" a physically damaged LCD display can not be repaired. It is not due to bad capacitors or anything else. It will be very difficult to find a new display. Even if it can be found it will most likely cost more than a new TV. You can always do an online search for a replacement but do not search by your TV model alone. Remove the back of your TV and check the label on the back of the LCD. It will have the manufacturer as well as the LCD panel number. Use that for your search. The only other thing you can try is to find the same model as your TV but broken other than the panel. Then harvest the panel from that TV.
To verify that this is a broken LCD post some images of what your screen shows with your question. Use this guide for that Adding images to an existing question
@badalpriya definitely a broken LCD. The only way to repair this is by replacing the panel.