Display panel and method for manufacturing the same

Patent metadata

Field	Value
Publication number	US-12085797-B2
Application number	US-202318509981-A
Country	US
Kind code	B2
Filing date	Nov 15, 2023
Priority date	Oct 17, 2019
Publication date	Sep 10, 2024
Grant date	Sep 10, 2024

Abstract

The present disclosure relates to a display panel. The display panel includes a display substrate, an opposite substrate, and a first adhesive layer and light guide layer located between the display substrate and the opposite substrate and stacked on each other. The first adhesive layer includes a photo-cured layer formed by curing a photocurable material layer. And the light guide layer is used to direct light to the photocurable material layer during the curing to form the cured layer.

First claim

What is claimed is:

1. A display panel comprising:
a display substrate;
an opposite substrate; and
a first adhesive layer and light guide layer located between the display substrate and the opposite substrate and stacked on each other,
wherein the light guide layer comprises a plurality of openings, and each opening of the light guide layer is located within a corresponding one of light emitting regions of the display panel, respectively, and
wherein a surface of the light guide layer away from the first adhesive layer has at least one of a recess and a protrusion.

2. The display panel according to claim 1 , wherein the opening of the light guide layer is filled with a transparent resin or a material of the first adhesive layer, and
wherein a refractive index of the transparent resin and a refractive index of the material of the first adhesive layer are less than a refractive index of the light guide layer.

3. The display panel according to claim 1 , further comprising a second adhesive layer located on a side of the light guide layer away from the first adhesive layer,
wherein a refractive index of the second adhesive layer and a refractive index of the first adhesive layer are less than a refractive index of the light guide layer.

4. The display panel according to claim 3 , further comprising a first cladding layer located between the light guide layer and the first adhesive layer; and
a second cladding layer located between the light guide layer and the second adhesive layer,
wherein a refractive index of the first cladding layer is less than a refractive index of the first adhesive layer, and wherein a refractive index of the second cladding layer is less than the refractive index of the second adhesive layer.

5. The display panel according to claim 1 , wherein the light guide layer is located on a side of the first adhesive layer facing the display substrate.

6. The display panel according to claim 1 , wherein the light guide layer is located on a side of the first adhesive layer facing the opposite substrate.

7. The display panel according to claim 1 , wherein the opposite substrate comprises:
a first substrate;
a black matrix located on a side of the first substrate facing the display substrate for defining light emitting region of the display panel; and
a color block located on the side of the first substrate facing the display substrate and located within the light emitting region.

8. The display panel according to claim 7 , wherein the light emitting region comprises a first sub-light emitting region, a second sub-light emitting region, and a third sub-light emitting region,
wherein the color block comprises a red color block located within the first sub-light emitting region, a green color block located within the second sub-light emitting region, and a blue color block located within the third sub-light emitting region,
wherein the red color block comprises a red color film located on the first substrate and a red quantum dot layer located on the red color film,
wherein the green color block comprises a green color film located on the first substrate and a green quantum dot layer located on the green color film, and
wherein the blue color block comprises a blue color film located on the first substrate and a scattering particle layer located on the blue color film.

9. The display panel according to claim 7 , wherein the display substrate comprises:
a second substrate;
a thin film transistor located on a side of the second substrate facing the opposite substrate;
a pixel definition layer located on the thin film transistor, the pixel definition layer having openings, and each opening of the pixel definition layer located within a corresponding one of the light emitting regions;
a first light emitting device located on the thin film transistor and located in each opening of the pixel definition layer; and
an encapsulation layer located on the pixel definition layer and the first light emitting device.

10. The display panel according to claim 7 , wherein the display substrate comprises:
a third substrate and a fourth substrate disposed oppositely;
a liquid crystal layer located between the third substrate and the fourth substrate;
a first alignment layer located on a side of the third substrate facing the liquid crystal layer;
a second alignment layer located on a side of the fourth substrate facing the liquid crystal layer;
a pixel electrode located between the third substrate and the first alignment layer and located within the light emitting region of the display panel;
a thin film transistor located between the third substrate and the pixel electrode; and
a dielectric layer located between the third substrate and the pixel electrode and a common electrode located between the third substrate and the dielectric layer, or
a common electrode located between the fourth substrate and the second alignment layer.

11. A method for manufacturing a display panel, the method comprising:
providing a display substrate and an opposite substrate;
providing one of a light guide layer and a first adhesive layer comprising a photocurable material on the display substrate or the opposite substrate;
providing the other of the light guide layer and the first adhesive layer on the display substrate or the opposite substrate;
joining the display substrate and the opposite substrate so that the light guide layer and the first adhesive layer are located between the display substrate and the opposite substrate and are stacked on each other; and
directing light from a side face of the light guide layer into the light guide layer to cure the photocurable material comprised in the first adhesive layer, thereby forming a photo-cured layer,
wherein the side face is located between a first face and a second face opposite to each other of the light guide layer that are parallel to a display side of the display panel,
wherein the light guide layer comprises a plurality of openings, and each opening of the light guide layer is located within a corresponding one of light emitting regions of the display panel, respectively, and
wherein a surface of the light guide layer away from the first adhesive layer has at least one of a recess and a protrusion.

12. The method according to claim 11 , wherein providing one of a light guide layer and a first adhesive layer comprising a photocurable material on the display substrate or the opposite substrate and providing the other of the light guide layer and the first adhesive layer on the display substrate or the opposite substrate comprises:
providing the light guide layer on the display substrate; and
providing the first adhesive layer comprising the photocurable material on the light guide layer.

13. The method according to claim 11 , wherein providing one of a light guide layer and a first adhesive layer comprising a photocurable material on the display substrate or the opposite substrate comprises providing the first adhesive layer comprising the photocurable material on the display substrate, and
wherein providing the other of the light guide layer and the first adhesive layer on the display substrate or the opposite substrate comprises providing the light guide layer on the opposite substrate.

14. The method according to claim 11 , further comprising, after providing the light guide layer, filling the opening of the light guide layer with a transparent resin or a material of the first adhesive layer,
wherein a refractive index of the transparent resin and a refractive index of the material of the first adhesive layer are less than a refractive index of the

Assignees

• Boe Technology Group Co Ltd

Inventors

• Sui Kai
• Jin Qian
• Xue Jinxiang
• Huang Wei

Classifications

• H10W90/00 Primary

  Package configurations · CPC title

• H10K71/40

  Thermal treatment, e.g. annealing in the presence of a solvent vapour · CPC title

• H10K59/875

  Arrangements for extracting light from the devices · CPC title

• H10K59/8722

  Peripheral sealing arrangements, e.g. adhesives, sealants · CPC title

• G02F1/133354 Primary

  Arrangements for aligning or assembling substrates · CPC title