Abstract: The disclosure provides a method of restoring a bright dot of an organic electroluminescent device, an organic electroluminescent device and a manufacturing method thereof, and a display apparatus. The method of restoring the bright dot of the organic electroluminescent device comprises blocking transmission of holes or electrons in the sub-pixel unit corresponding to the bright dot. By blocking transmission of holes or electrons in the sub-pixel unit corresponding to the bright dot, it is possible to block a flow of current towards an organic functional layer in the sub-pixel unit corresponding to the bright dot such that the sub-pixel unit will not emit light, thus converting the bright dot into a dark dot.

Abstract: An evaporation device and an evaporation system are provided. The evaporation device comprises a first heating part; a heat transfer part comprising a first and second heat transfer member, wherein the second heat transfer member surrounds the first heat transfer member and is spaced apart from the first heat transfer member by a predefined distance, a space between the first and second heat transfer member is configured to accommodate an evaporation material, and the heat transfer part is configured to transfer heat from the first heating part to the evaporation material for sublimating the evaporation material; and an ejection part for ejecting the evaporation material which has been heated and sublimated by the heat transfer part. The evaporation system comprises the evaporation device.