Organic light-emitting diode display panel, fabrication method, and electronic apparatus
An organic light-emitting diode (OLED) display panel, a fabrication method thereof, and an electronic apparatus including the OLED display panel are provided. The OLED display panel comprises: a substrate, an organic light-emitting device, and a capping layer. A material of the capping layer includes a compound of a chemical formula (I), L1, L2, L3, and L4 are independently selected from a hydrogen atom, a substituted or -unsubstituted alkyl, a substituted or unsubstituted alkenyl, a substituted or unsubstituted alkynyl, and a substituted or unsubstituted phenyl. A total quantity of benzene rings included in L1, L2, L3, and L4 is from 0 to 6. Y1, Y2, Y3, Y4, Y5, and Y6 are independently selected from a hydrogen atom, a substituted or unsubstituted alkyl, a substituted of unsubstituted alkenyl, and a substituted or unsubstituted alkynyl.
1. An organic light-emitting diode (OLED) display panel, comprising:
a substrate;
an organic light-emitting device comprising a first electrode, an organic light-emitting layer, and a second electrode, successively disposed on one side of the substrate, wherein the second electrode has a first side facing toward the substrate and an opposing side; and
a capping layer disposed on the opposing side of the second electrode,
wherein a material of the capping layer includes a compound of the following chemical formula (I):
wherein:
L1, L2, L3, and L4 are independently selected from a hydrogen atom, a substituted or unsubstituted alkyl, a substituted or unsubstituted alkenyl, a substituted or unsubstituted alkynyl, and a substituted or unsubstituted phenyl, and a total quantity of benzene rings included in L1, L2, L3, and L4 is from 0 to 6; and
Y1, Y2, Y3, Y4, Y5, and Y6 include:
two selected from Y3, Y4, Y5, and Y6, each including one of the alkenyl and the alkynyl, and
a remaining of Y1, Y2, Y3, Y4, Y5, and Y6, being independently selected from a hydrogen atom, a substituted or unsubstituted alkyl, a substituted or unsubstituted alkenyl, and a substituted or unsubstituted alkynyl.
2. The OLED display panel according to claim 1 , wherein:
an encapsulating layer is disposed on the capping layer; and
the encapsulating layer at least includes a plurality of inorganic layers and an organic layer.
3. The OLED display panel according to claim 2 , wherein:
a material of the organic layer in the encapsulating layer includes the compound of the chemical formula (I).
4. The OLED display panel according to claim 2 , wherein:
the capping layer has a side facing toward the second electrode and an opposing side;
the plurality of inorganic layers of the encapsulating layer include a first inorganic layer and a second inorganic layer, and
the first inorganic layer, the organic layer and the second inorganic layer are disposed successively on the opposing side of the capping layer.
5. The OLED display panel according to claim 1 , wherein:
the compound of the chemical formula (I) has a solubility of approximately 0.2 g/L to 0.4 g/L in N-methylpyrrolidone at room temperature; or
the compound of the chemical formula (I) has the solubility of approximately 0.2 g/L to 0.3 g/L in cyclohexanone at room temperature.
6. The OLED display panel according to claim 1 , wherein:
a refractive index n of the capping layer is greater than or equal to approximately 1. 5.
7. The OLED display panel according to claim 1 , wherein:
a thickness of the capping layer is approximately 20 nm to 150 nm.
8. The OLED display panel according to claim 2 , wherein:
a thickness of the inorganic layer in the encapsulating layer is approximately 700 nm to 1000 nm.
9. The OLED display panel according to claim 2 , wherein:
a thickness of the organic layer in the encapsulating layer is approximately 7000 nm to 8000 nm.
10. The OLED display panel according to claim 1 , wherein the material of the capping layer further includes:
11. The OLED display panel according to claim 2 , wherein:
a material of the inorganic layer in the encapsulating layer includes at least one of a metal oxide, a metal nitride, a metal carbide, and a metal oxynitride.
12. The OLED display panel according to claim 2 , wherein:
a material of the inorganic layer of the encapsulating layer includes silicon nitride or Al 2 O 3 .
13. The OLED display panel according to claim 1 , wherein:
the capping layer is formed by inkjet printing.
14. The OLED display panel according to claim 3 , wherein: the organic layer in the encapsulation layer is formed by inkjet printing.
15. An electronic apparatus, comprising the OLED display panel according to claim 1 .
16. An organic light-emitting diode (OLED) display panel, comprising:
a substrate;
an organic light-emitting device comprising a first electrode, an organic light-emitting layer, and a second electrode, successively disposed on one side of the substrate, wherein the second electrode has a first side facing toward the substrate and an opposing side; and
a capping layer disposed on the opposing side of the second electrode,
wherein a material of the capping layer includes a compound of the following chemical formula (I):
wherein:
Y1, Y2, Y3, Y4, Y5 and Y6 include:
two selected from Y3, Y4, Y5, and Y6, each including one of the alkenyl and the alkynyl, and
a remaining of Y1, Y2, Y3, Y4, Y5, and Y6, each including a hydrogen; and
L1, L2, L3 and L4 each includes a phenyl.
17. A fabrication method for an OLED display panel, comprising:
providing a substrate;
forming an organic light-emitting device on the substrate, wherein the organic light-emitting device comprises a first electrode, an organic light-emitting layer, and a second electrode, and the second electrode has a first side facing toward the substrate and an opposing side; and
forming a capping layer on the opposing side of the second electrode, wherein the capping layer is formed by dissolving a compound of the following chemical formula (I) in a solvent to form an inkjet solution, and inkjet printing the inkjet solution as a film onto a surface of the organic light-emitting device,
wherein:
L1, L2, L3, and L4 are independently selected from a hydrogen atom, a substituted or unsubstituted alkyl, a substituted or unsubstituted alkenyl, a substituted or unsubstituted alkynyl, and a substituted or unsubstituted phenyl, and a total quantity of benzene rings included in L1, L2, L3, and L4 is from 0 to 6;
Y1, Y2, Y3, Y4, Y5, and Y6 include:
two selected from Y3, Y4, Y5, and Y6, each including one of the alkenyl and the alkynyl, and
a remaining of Y1, Y2, Y3, Y4, Y5, and Y6, being independently selected from a hydrogen atom, a substituted or unsubstituted alkyl, a substituted or unsubstituted alkenyl, and a substituted or unsubstituted alkynyl.
18. The fabrication method according to claim 17 , further including:
forming an encapsulating layer on the capping layer,
wherein the encapsulating layer includes at least one inorganic layer and at least one organic layer.
19. The fabrication method according to claim 18 , wherein the at least one organic layer is formed by:
dissolving the compound of the chemical formula (I) in a solvent to form an inkjet solution, and
inkjet printing the inkjet solution to form a film.
20. The fabrication method according to claim 17 , wherein:
the solvent includes at least one of N-methylpyrrolidone and cyclohexanone;
and
L1, L2, L3, and L4 each includes a phenyl.
21. An organic light-emitting diode (OLED) display panel, comprising:
a substrate;
an organic light-emitting device comprising a first electrode, an organic light-emitting layer, and a second electrode, successively disposed on one side of the substrate, wherein the second electrode has a first side facing toward the substrate and an opposing side; and
a capping layer disposed on the opposing side of the second electrode, wherein a material of the capping layer includes at least one of: