This policy is applicable to idea/Lenovo laptops and tablets.
LCD stands for Liquid Crystal Display. Each pixel contains three dots of Red, Green and Blue (sub-pixel).
Bright spot: Any regular sub-pixel bright dot under a black screen is always called a bright spot.
Dark spot: Any single sub-pixel that does not light up in a white screen or other non-black screen is called a dark spot.
While checking dark spots on an all-white screen or bright spots on a all-black screen (tip for LCD Pixel Test), check for scratches, dents, and other defects at the same time. If the numbers of the bright/dark dots do not meet the number in the following table during the warranty period then contact Lenovo or your service provider for assistance.