The projection technology of home intelligent projector is DLP display technology, usually using DMD display chip. The reason for the white spots in the projection screen is related to the DMD display chip, because each pixel generated by the DMD display chip has a micro mirror and drive.
Therefore, it is very fragile and easy to damage the drive of the chip due to various factors, resulting in white spots on the projection screen. Such problems cannot be solved by themselves, and the projector can only be returned to the factory for repair.
Generally, projectors can continue to be used after white spots, at least for a year or so. There are bad spots on the display panel, which will cause the phenomenon of white spots on the projector. Such bad points may be more and more with the use of time, will directly affect the effect of the projection screen. The projector is generally recommended to the user to repair, may need to replace the display panel, maintenance costs are relatively high.