Electroluminescent device comprising a target film comprising a small molecular layer and a large molecular layer and method for fabricating the same, display panel and display device
AssigneeBoe Technology Group Co., Ltd.
InventorWenjun Hou
Life of this patent
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Abstract
An electroluminescent device, a method for fabricating the same, a display panel, and a display device are disclosed. The electroluminescent device includes a hole inject layer, a hole transport layer, an electron transport layer, and an electron inject layer. At least one of the hole inject layer, the hole transport layer, the electron transport layer, and electron inject layer is a target film including a small molecular layer and a large molecular layer which are arranged in a stacked manner.
Claims11
An electroluminescent device, comprising a hole inject layer, a hole transport layer, an electroluminescent layer, an electron transport layer, and an electron inject layer,
- wherein at least one of the hole inject layer, the hole transport layer, the electron transport layer, and the electron inject layer is a target film comprising a small molecular layer with a small molecule and a large molecular layer with a large molecule which are arranged in a stacked manner, and
- wherein the large molecular layer of the target film is closer to the electroluminescent layer than the small molecular layer of the target film, and the large molecular layer has a cross-linked network structure
- wherein a relative molecular mass of the large molecule of the large molecular layer ranges from several thousands to several millions, and a relative molecular mass of the small molecule of the small molecular layer is smaller than five hundreds, and
- wherein the small molecular layer has a thickness larger than that of the large molecular layer.
A method for fabricating an electroluminescent device, comprising:
- forming an electroluminescent device on a substrate, wherein the electroluminescent device comprises a hole inject layer, a hole transport layer, an electroluminescent layer, an electron transport layer, and an electron inject layer,
- wherein at least one of the hole inject layer, the hole transport layer, the electron transport layer, and the electron inject layer is a target film comprising a small molecular layer with a small molecule and a large molecular layer with a large molecule which are arranged in a stacked manner, and
- wherein the large molecular layer of the target film is closer to the electroluminescent layer than the small molecular layer of the target film, and the large molecular layer has a cross-linked network structure,
- wherein a relative molecular mass of the large molecule of the large molecular layer ranges from several thousands to several millions, and a relative molecular mass of the small molecule of the small molecular layer is smaller than five hundreds, and
- wherein the small molecular layer has a thickness larger than that of the large molecular layer.
Dependencies are inferred from the claim text.