A method for encapsulating openings in a display area includes: forming an intermediate layer having an isolation hole and an assembly via on a substrate, the isolation hole dividing the intermediate layer into separate display portion and isolation portion and the assembly via being spaced apart from the isolation hole by the isolation portion; forming a groove on a side of the isolation portion facing the display portion and/or on a side of the isolation portion away from the display portion; forming a light emitting layer including a first light emitting portion, a second light emitting portion, a third light emitting portion, and a fourth light emitting portion, wherein the third light emitting portion is separate from at least one of the second light emitting portion and the fourth light emitting portion; and forming an encapsulation layer that covers the light emitting layer and the isolation portion, and is filled in a groove.