Array substrate, organic electroluminescent display panel and display apparatus

1. An array substrate, comprising:

a base substrate,

an organic electroluminescent structure disposed on the base substrate,

a thin film packaging layer covering the organic electroluminescent structure, and

an adsorption layer disposed on the thin film packaging layer,

wherein the adsorption layer comprises an organic material layer and a cathode material layer which are laminated;

wherein a material of the organic material layer is the same as a material of an organic functional layer in the organic electroluminescent structure; and

wherein a material of the cathode material layer is the same as a material of a cathode layer in the organic electroluminescent structure.

2. The array substrate according to claim 1 , wherein the adsorption layer is configured to adsorb water vapor and oxygen.

3. The array substrate according to claim 1 , wherein the organic material layer comprises at least one selected from the group consisting of: oxadiazole and derivatives thereof, triazole and derivatives thereof, rhodamine and derivatives thereof, coumarin and derivatives thereof, 1,8-naphthalimide and derivatives thereof, pyrazoline and derivatives thereof, triphenylamine and derivatives thereof, porphyrin and derivatives thereof, carbazole and derivatives thereof, pyrazine and derivatives thereof, thiazole and derivatives thereof, perylene and derivatives thereof; polyphenylene, polythiophene, polyfluorene, polytriphenylamine and derivatives thereof; polytriphenylamine, polycarbazole, polypyrrole, polyporphyrin and derivatives and copolymers thereof.

4. The array substrate according to claim 1 , wherein the cathode material layer comprises at least one selected from the group consisting of: silver (Ag), aluminum (Al), lithium (Li), magnesium (Mg), calcium (Ca) or indium (In).

5. The array substrate according to claim 1 , wherein the organic material layer has a thickness of 50 nm to 1000 nm.

6. The array substrate according to claim 1 , wherein the cathode material layer has a thickness of 50 nm to 1000 nm.

7. The array substrate according to claim 1 , further comprising: an isolation layer for isolating water vapor and oxygen disposed on the adsorption layer.

8. The array substrate according to claim 7 , wherein a material of the isolation layer is the same as a material of the thin film packaging layer.

9. The array substrate according to claim 7 , wherein the isolation layer has a thickness of 50 nm to 1000 nm.

10. An organic electroluminescent display panel, comprising the array substrate according to claim 1 .

11. The organic electroluminescent display panel according to claim 10 , wherein the adsorption layer is configured to adsorb water vapor and oxygen.

12. The organic electroluminescent display panel according to claim 10 , wherein the adsorption layer comprises an organic material layer and a cathode material layer which are laminated.

13. The organic electroluminescent display panel according to claim 12 , wherein a material of the organic material layer is the same as a material of an organic functional layer in the organic electroluminescent structure.

14. The organic electroluminescent display panel according to claim 12 , wherein a material of the cathode material layer is the same as a material of a cathode layer in the organic electroluminescent structure.

15. A display apparatus, comprising the organic electroluminescent display panel according to claim 10 .

16. The display apparatus according to claim 15 , which is a mobile phone, a tablet computer, a TV set, a display, a laptop, a digital photo frame, or a navigator.