Display panel and display device

Patent metadata

Field	Value
Publication number	US-2021336226-A1
Application number	US-201916626533-A
Country	US
Kind code	A1
Filing date	Nov 13, 2019
Priority date	Oct 12, 2019
Publication date	Oct 28, 2021
Grant date	—

Abstract

The present disclosure provides a display panel and a display device. The display panel includes a substrate, a light emitting layer on the substrate, a thin film encapsulation layer on the light emitting layer, and a cover plate layer on the thin film encapsulation layer. A surface of at least one film layer of a film layer structure between the substrate and the cover plate layer is convex.

First claim

What is claimed is:

1 . A display panel, comprising
a substrate; a light emitting layer on the substrate; a thin film encapsulation layer on the light emitting layer; and a cover plate layer on the thin film encapsulation layer; wherein a surface of at least one film layer of a film layer structure between the substrate and the cover plate layer is convex.

2 . The display panel as claimed in claim 1 , wherein,
the display panel comprises a first convex surface; a film layer located on a side of the first convex surface adjacent to a light emitter is a first film layer; a film layer located on a side of the first convex surface away from the light emitter is a second film layer; and a refractive index of the first film layer is less than a refractive index of the second film layer.

3 . The display panel as claimed in claim 2 , wherein,
a light emitting direction of the display panel is from the light emitting layer to the cover plate layer; the light emitting layer comprises an anode layer on the substrate, a luminous layer on the anode layer, and a cathode layer on the luminous layer; and the first convex surface is a common surface between any two adjacent film layers between the luminous layer and the cover plate layer.

4 . The display panel as claimed in claim 3 , wherein, the thin film encapsulation layer comprises at least one inorganic layer and at least one organic layer, the inorganic layer and the organic layer are laminated, and the first convex surface is a common surface between any two adjacent layers of the inorganic layer and the organic layer.

5 . The display panel as claimed in claim 3 , wherein,
the thin film encapsulation layer comprises a first inorganic layer, a first organic layer on the first inorganic layer, a second organic layer on the first organic layer, and a second inorganic layer on the second organic layer; and the first convex surface is a common surface between the first organic layer and the second organic layer.

6 . The display panel as claimed in claim 2 , wherein,
a light emitting direction of the display panel is from the light emitting layer to the substrate; and the first convex surface is a common surface between any two adjacent film layers between a luminous layer and the cover plate layer.

7 . The display panel as claimed in claim 6 , wherein, the display panel further comprises a thin film transistor between the substrate and the light emitting layer;
the thin film transistor comprises a buffer layer on the substrate, a gate insulating layer on the buffer layer, an interlayer dielectric layer on the gate insulating layer, and a planarization layer on the interlayer dielectric layer; and the first convex surface is a common surface between any two adjacent layers of the substrate, the buffer layer, the gate insulating layer, the interlayer dielectric layer, the planarization layer, and an anode layer.

8 . The display panel as claimed in claim 2 , wherein,
the light emitting layer comprises at least one light emitting unit; the light emitting unit is arranged opposite to the first convex surface; and an orthographic projection of the light emitting unit on the substrate is located within an orthographic projection of the first convex surface on the substrate.

9 . The display panel as claimed in claim 8 , wherein,
the display panel further comprises a second convex surface; the second convex surface is arranged opposite to the light emitting unit; the second convex surface is located on a side of the first convex surface away from the light emitter; and an orthographic projection of the second convex surface on the substrate is located within the orthographic projection of the first convex surface on the substrate.

10 . A display device, comprising a display panel, the display panel comprising
a substrate; a light emitting layer on the substrate; a thin film encapsulation layer on the light emitting layer; and a cover plate layer on the thin film encapsulation layer; wherein a surface of at least one film layer of a film layer structure between the substrate and the cover plate layer is convex.

11 . The display device as claimed in claim 10 , wherein,
the display panel comprises a first convex surface; a film layer located on a side of the first convex surface adjacent to the light emitter is a first film layer; a film layer located on a side of the first convex surface away from the light emitter is a second film layer; and a refractive index of the first film layer is less than a refractive index of the second film layer.

12 . The display device as claimed in claim 11 , wherein,
a light emitting direction of the display panel is from the light emitting layer to the cover plate layer; the light emitting layer comprises an anode layer on the substrate, a luminous layer on the anode layer, and a cathode layer on the luminous layer; and the first convex surface is a common surface between any two adjacent film layers between the luminous layer and the cover plate layer.

13 . The display device as claimed in claim 12 , wherein, the thin film encapsulation layer comprises at least one inorganic layer and at least one organic layer, the inorganic layer and the organic layer are laminated, and the first convex surface is a common surface between any two adjacent layers of the inorganic layer and the organic layer.

14 . The display device as claimed in claim 12 , wherein,
the thin film encapsulation layer comprises a first inorganic layer, a first organic layer on the first inorganic layer, a second organic layer on the first organic layer, and a second inorganic layer on the second organic layer; and the first convex surface is a common surface between the first organic layer and the second organic layer.

15 . The display device as claimed in claim 11 , wherein,
a light emitting direction of the display panel is from the light emitting layer to the substrate; and the first convex surface is a common surface between any two adjacent film layers between a luminous layer and the cover plate layer.

16 . The display device as claimed in claim 15 , wherein, the display panel further comprises a thin film transistor between the substrate and the light emitting layer;
the thin film transistor comprises a buffer layer on the substrate, a gate insulating layer on the buffer layer, an interlayer dielectric layer on the gate insulating layer, and a planarization layer on the interlayer dielectric layer; and the first convex surface is a common surface between any two adjacent layers of the substrate, the buffer layer, the gate insulating layer, the interlayer dielectric layer, the planarization layer, and an anode layer.

17 . The display device as claimed in claim 11 , wherein,
the light emitting layer comprises at least one light emitting unit; the light emitting unit is arranged opposite to the first convex surface; and an orthographic projection of the light emitting unit on the substrate is located within an orthographic projection of the first convex surface on the substrate.

18 . The display device as claimed in claim 17 , wherein,
the display panel further comprises a second convex surface; the second convex surface is arranged opposite to the light emitting unit; the second convex surface is located on a side of the first convex surface away from the light emitter; and an orthographic projection of the first convex surface on the substrate is located within the orthographic projection of the second convex

Assignees

• Shenzhen China Star Optoelectronics Semiconductor Display Tech Co Ltd

Inventors

• Liu Shiqi

Classifications

• H10K59/879 Primary

  comprising refractive means, e.g. lenses · CPC title

• H10K59/8731

  multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers · CPC title

• H10K59/80521

  characterised by their shape · CPC title

• H10K59/12

  Active-matrix OLED [AMOLED] displays · CPC title

• H10K50/858

  comprising refractive means, e.g. lenses · CPC title