Optionally, in the light-emitting element encapsulation structure according to some embodiments of this disclosure, the encapsulation layer further includes a water-absorbent layer of color changing property located on the side of the water-absorbent material layer away from the second substrate.

Optionally, in the light-emitting element encapsulation structure according to some embodiments of this disclosure, the water-absorbent layer of color changing property can be arranged to improve the waterproof performance of the encapsulation layer, and since the color of the water-absorbent layer of color changing property will vary after it absorbs water, a humidity penetration path can be determined more intuitively to thereby analyze a reason for a failure of the encapsulation layer, and determine when it may fail.

Optionally in the light-emitting element encapsulation structure according to some embodiments of this disclosure, the material of the transparent filler includes a water-absorbent material.

Optionally, in the light-emitting element encapsulation structure according to some embodiments of this disclosure, a transparent filler is arranged between the light-emitting element and the first substrate, and the transparent filler can be made of a glue material, or another water-absorbent material with a high transmittivity to thereby prevent humidity and oxygen from eroding the light-emitting element, but also planarize them, and make the display area and the peripheral areas uniform in thickness while increasing the substrate spacing. An orthographic projection of the transparent filler onto the first substrate covers at least the orthographic projection of the light-emitting element onto the first substrate.