Display panel, method for making display panel, and electronec device

Patent metadata

Field	Value
Publication number	US-10418432-B2
Application number	US-201715796674-A
Country	US
Kind code	B2
Filing date	Oct 27, 2017
Priority date	May 26, 2017
Publication date	Sep 17, 2019
Grant date	Sep 17, 2019

Abstract

A display panel includes an array substrate including a base substrate and a drive unit; a light-emitting functional layer placed on one side of the drive unit and electrically connected with the drive unit; a sealing film layer placed on one side of the light-emitting functional layer; and a polarization functional layer placed on a light output side of the display panel. The polarization functional layer includes a coated polarization layer. Compared with the prior art, the display panel includes less film layers, and layers of the display panel are thinner, which facilitates the thin-type design. In addition, the method for making a display panel is simple, a production cost is low, and a production efficiency is high, which is good for a large-scale production application.

First claim

What is claimed is:

1. A display panel, comprising:
an array substrate comprising a base substrate and a drive unit placed on the base substrate;
a light-emitting functional layer placed on one side of the drive unit away from the base substrate and electrically connected with the drive unit;
a sealing film layer placed on one side of the light-emitting functional layer away from the array substrate;
a polarization functional layer placed on a light output side of the display panel; and
a touch functional layer,
wherein the polarization functional layer comprises a coated polarization layer,
an area of the polarization functional layer is S 1 , an area of the touch functional layer is S 2 , an area of the sealing film layer is S 3 , and S 1 <S 2 ≤S 3 , and
an orthogonal projection of the polarization functional layer on the array substrate comprises a first boundary, an orthogonal projection of the touch functional layer on the array substrate comprises a second boundary, an orthogonal projection of the sealing film layer on the array substrate comprises a third boundary, a distance between the first boundary and the second boundary is d 1 , a distance between the first boundary and the third boundary is d 2 , 0.3 mm≤d 1 ≤0.9 mm, d 2 ≤0.7 mm, and d 2 ≤d 1 .

2. The display panel according to claim 1 , wherein the light-emitting functional layer is a micro light-emitting diode layer or an organic light-emitting diode layer.

3. The display panel according to claim 1 , wherein the polarization functional layer is placed on one side of the sealing film layer away from the array substrate, the polarization functional layer further comprises a first base, and the coated polarization layer is formed on the first base.

4. The display panel according to claim 3 , further comprising a pressure sensitive adhesive layer placed between the polarization functional layer and the sealing film layer.

5. The display panel according to claim 1 , wherein the coated polarization layer comprises a linear polarization layer and a phase delay layer.

6. The display panel according to claim 5 , wherein the coated polarization layer further comprises an orientation layer placed between the linear polarization layer and the phase delay layer.

7. The display panel according to claim 1 , wherein the touch functional layer comprises a second base and a touch electrode layer, the touch functional layer is placed on one side of the polarization functional layer facing the array substrate, and a material of the second base comprises cycloolefin polymer.

8. The display panel according to claim 1 , wherein the touch functional layer comprises a touch electrode layer, and the touch electrode layer is formed directly on the sealing film layer.

9. The display panel according to claim 1 , wherein the array substrate is electrically connected to a drive chip by a flexible printed circuit, and the touch electrode layer is electrically connected to the drive chip by another flexible printed circuit; or the array substrate and the touch electrode layer are electrically connected to a drive chip by a same flexible printed circuit.

10. An electronic device, comprising a display panel, wherein the display panel comprises:
an array substrate comprising a base substrate and a drive unit placed on the base substrate;
a light-emitting functional layer placed on one side of the drive unit away from the base substrate and electrically connected with the drive unit;
a sealing film layer placed on one side of the light-emitting functional layer away from the array substrate;
a polarization functional layer placed on a light output side of the display panel; and
a touch functional layer,
wherein the polarization functional layer comprises a coated polarization layer,
an area of the polarization functional layer is S 1 , an area of the touch functional layer is S 2 , an area of the sealing film layer is S 3 , and S 1 <S 2 ≤S 3 , and
an orthogonal projection of the polarization functional layer on the array substrate comprises a first boundary, an orthogonal projection of the touch functional layer on the array substrate comprises a second boundary, an orthogonal projection of the sealing film layer on the array substrate comprises a third boundary, a distance between the first boundary and the second boundary is d 1 , a distance between the first boundary and the third boundary is d 2 , 0.3 mm≤d 1 ≤0.9 mm, d 2 ≤0.7 mm, and d 2 ≤d 1 .

11. A method for making a display panel, comprising steps of:
providing an array substrate, the array substrate comprising a base substrate and a drive unit placed on the base substrate;
forming a light-emitting functional layer, the light-emitting functional layer being placed on one side of the drive unit away from the base substrate, the light-emitting functional layer being electrically connected with the drive unit;
forming a sealing film layer, the sealing film layer being placed on one side of the light-emitting functional layer away from the array substrate;
forming a polarization functional layer, the polarization functional layer comprising a coated polarization layer; and
adhering the polarization functional layer on a light output side of the display panel,
wherein the display panel further comprises a touch functional layer, an area of the polarization functional layer is S 1 , an area of the touch functional layer is S 2 , an area of the sealing film layer is S 3 , and S 1 <S 2 ≤S 3 , and
an orthogonal projection of the polarization functional layer on the array substrate comprises a first boundary, an orthogonal projection of the touch functional layer on the array substrate comprises a second boundary, an orthogonal projection of the sealing film layer on the array substrate comprises a third boundary, a distance between the first boundary and the second boundary is d 1 , a distance between the first boundary and the third boundary is d 2 , 0.3 mm≤d 1 ≤0.9 mm, d 2 ≤0.7 mm, and d 2 ≤d 1 .

12. The method for making a display panel according to claim 11 , wherein the coated polarization layer comprises a linear polarization layer and a phase delay layer, the polarization functional layer further comprises a first base,
wherein the step of forming the polarization functional layer comprises:
defining an orientation groove in the first base;
coating and curing a forming material of the linear polarization layer on one side of the first base, the orientation groove being defined in the side of the first base; and

coating and curing a forming material of the phase delay layer on one side of the linear polarization layer, the side of the linear polarization layer being away from the first base.

13. The method for making a display panel according to claim 11 , further comprising steps of:
providing the touch functional layer; and
laminating and adhering the touch functional layer, the polarization functional layer, and the array substrate having the light-emitting functional layer;
wherein the touch functional layer comprises a second base and a touch electrode layer.

14. The method for making a display panel according to claim 11 , wherein the touch functional layer comprises a touch electrode layer, after the step of forming the sealing film layer and before the step of forming the polarization functional layer, the method for making a display panel further comprises:
forming the touch electrode layer directly on the sealing film layer.

Assignees

• Shanghai Tianma Am Oled Co Ltd

Inventors

• Jin Jian
• Su Congyi

Classifications

• H01L51/5215

  Electricity · mapped topic

• H01L51/5296

  Electricity · mapped topic

• H01L51/5008

  Electricity · mapped topic

• H01L27/3258

  Electricity · mapped topic

• H01L51/5016

  Electricity · mapped topic