Display panel and display device comprising an encapsulating member
View Patent ↗A display panel includes a light-emitting device, and an encapsulating member disposed on the light-emitting device for encapsulating the light-emitting device. The encapsulating member includes a first inorganic encapsulating layer, which includes at least a first inorganic encapsulating sub-layer, a second inorganic encapsulating sub-layer, and a third inorganic encapsulating sub-layer. The thickness of the third inorganic encapsulating sub-layer is greater than that of the first inorganic encapsulating sub-layer and that of the second inorganic encapsulating sub-layer. The refractive index of the first inorganic encapsulating sub-layer is n1, the refractive index of the second inorganic encapsulating sub-layer is n2, and the refractive index of the third inorganic encapsulating sub-layer is n3, wherein n2<n3<n1, and n1−n2>0.4.
1 . A display panel, comprising:
a light-emitting device; and
an encapsulating member disposed on the light-emitting device for encapsulating the light-emitting device, the encapsulating member comprising a first inorganic encapsulating layer, a second inorganic encapsulating layer, and an organic encapsulating layer stacked sequentially, the first inorganic encapsulating layer comprising at least a first inorganic encapsulating sub-layer, a second inorganic encapsulating sub-layer, a third inorganic encapsulating sub-layer, and a fourth inorganic encapsulating sub-layer that are sequentially stacked in a direction away from the light-emitting device;
wherein a thickness of the third inorganic encapsulating sub-layer is greater than a thickness of the first inorganic encapsulating sub-layer and a thickness of the second inorganic encapsulating sub-layer; a refractive index of the first inorganic encapsulating sub-layer is n1, a refractive index of the second inorganic encapsulating sub-layer is n2, and a refractive index of the third inorganic encapsulating sub-layer is n3, and a refractive index of the fourth inorganic encapsulating sub-layer is n4, wherein n2<n3<n1, n4<n3, and n1-n2>0.4; and
wherein a thickness of the fourth inorganic encapsulating sub-layer is less than the thickness of the third inorganic encapsulating sub-layer.
2 . The display panel according to claim 1 , wherein n1>1.9.
3 . The display panel according to claim 2 , wherein n3>1.7.
4 . The display panel according to claim 3 , wherein n2<1.5.
5 . The display panel according to claim 1 , wherein the light-emitting device comprises a first electrode, a second electrode, and a light-emitting layer disposed between the first electrode and the second electrode, and the second electrode is disposed on one side of the light-emitting layer close to the encapsulating member; and
the display panel further comprises an organic light-gathering layer disposed between the first inorganic encapsulating sub-layer and the second electrode.
6 . The display panel according to claim 1 , wherein a side surface of the first inorganic encapsulating sub-layer close to the light-emitting device is in contact with a side surface of the light-emitting device close to the encapsulating member.
7 . The display panel according to claim 1 , wherein a material of the first inorganic encapsulating sub-layer comprises silicon nitride and materials of the second inorganic encapsulating sub-layer and the third inorganic encapsulating sub-layer comprise silicon oxynitride.
8 . The display panel according to claim 1 , wherein the fourth inorganic encapsulating sub-layer is disposed on one side of the third inorganic encapsulating sub-layer away from the light-emitting device.
9 . The display panel according to claim 1 , wherein the organic encapsulating layer is disposed on one side of the first inorganic encapsulating layer away from the light-emitting device and the second inorganic encapsulating layer is disposed on one side of the organic encapsulating layer away from the light-emitting device.
10 . The display panel according to claim 2 , wherein the light-emitting device comprises a first electrode, a second electrode, and a light-emitting layer disposed between the first electrode and the second electrode, and the second electrode is disposed on one side of the light-emitting layer close to the encapsulating member; and
the display panel further comprises an organic light-gathering layer disposed between the first inorganic encapsulating sub-layer and the second electrode.
11 . The display panel according to claim 2 , wherein a side surface of the first inorganic encapsulating sub-layer close to the light-emitting device is in contact with a side surface of the light-emitting device close to the encapsulating member.
12 . A display device comprising a display panel, wherein the display panel comprises:
a light-emitting device; and
an encapsulating member disposed on the light-emitting device for encapsulating the light-emitting device, the encapsulating member comprises a first inorganic encapsulating layer, a second inorganic encapsulating layer, and an organic encapsulating layer stacked sequentially, the first inorganic encapsulating layer comprises at least a first inorganic encapsulating sub-layer, a second inorganic encapsulating sub-layer, a third inorganic encapsulating sub-layer, and a fourth inorganic encapsulating sub-layer that are sequentially stacked in a direction away from the light-emitting device;
wherein a thickness of the third inorganic encapsulating sub-layer is greater than a thickness of the first inorganic encapsulating sub-layer and a thickness of the second inorganic encapsulating sub-layer; a refractive index of the first inorganic encapsulating sub-layer is n1, a refractive index of the second inorganic encapsulating sub-layer is n2, and a refractive index of the third inorganic encapsulating sub-layer is n3, and a refractive index of the fourth inorganic encapsulating sub-layer is n4, wherein n2<n3<n1, n4<n3, and n1-n2>0.4; and
wherein a thickness of the fourth inorganic encapsulating sub-layer is less than the thickness of the third inorganic encapsulating sub-layer.
13 . The display device according to claim 12 , wherein n1>1.9.
14 . The display device according to claim 13 , wherein n3>1.7.
15 . The display device according to claim 14 , wherein n2<1.5.
16 . The display device according to claim 12 , wherein the light-emitting device comprises a first electrode, a second electrode, and a light-emitting layer disposed between the first electrode and the second electrode, and the second electrode is disposed on one side of the light-emitting layer close to the encapsulating member; and
the display panel further comprises an organic light-gathering layer disposed between the first inorganic encapsulating sub-layer and the second electrode.
17 . The display device according to claim 12 , wherein a side surface of the first inorganic encapsulating sub-layer close to the light-emitting device is in contact with a side surface of the light-emitting device close to the encapsulating member.
18 . The display device according to claim 12 , wherein a material of the first inorganic encapsulating sub-layer comprises silicon nitride and materials of the second inorganic encapsulating sub-layer and the third inorganic encapsulating sub-layer comprise silicon oxynitride.
19 . The display device according to claim 12 , wherein the fourth inorganic encapsulating sub-layer is disposed on one side of the third inorganic encapsulating sub-layer away from the light-emitting device.
20 . The display device according to claim 12 , wherein the organic encapsulating layer is disposed on one side of the first inorganic encapsulating layer away from the light-emitting device and the second inorganic encapsulating layer is disposed on one side of the organic encapsulating layer away from the light-emitting device.