Light-emitting panel and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-11088354-B2
Application number	US-201916660298-A
Country	US
Kind code	B2
Filing date	Oct 22, 2019
Priority date	Apr 8, 2019
Publication date	Aug 10, 2021
Grant date	Aug 10, 2021

Abstract

A light-emitting panel and its manufacturing method are provided. The light-emitting panel includes a backboard, an electroluminescence device and an adhesive layer that are sequentially laminated; the light-emitting panel further includes a convex lens array, which includes a plurality of convex lenses on a side of the adhesive layer close to the electroluminescence device. A light-emitting surface of the electroluminescence device faces the adhesive layer, and the plurality of convex lenses included by the convex lens array protrude toward the adhesive layer.

First claim

What is claimed is:

1. A light-emitting panel, comprising:
a backboard, an electroluminescence device and an adhesive layer that are sequentially laminated; and
a convex lens array, which comprises a plurality of convex lenses on a side of the adhesive layer close to the electroluminescence device,
wherein a light-emitting surface of the electroluminescence device faces the adhesive layer, and the plurality of convex lenses protrude toward the adhesive layer,
wherein the light-emitting panel further comprises a cover plate, wherein focal points of the plurality of convex lenses are at an interface between the cover plate and a medium which is at a side of the cover plate away from the plurality of convex lenses.

2. The light-emitting panel according to claim 1 , wherein
the light-emitting panel comprises a plurality of subpixels, and each of the plurality of subpixels comprises the electroluminescence device,
the electroluminescence device comprises a light-emitting layer, and an orthographic projection that the convex lens array has on the backboard overlaps an orthographic projection that the light-emitting layer of the electroluminescence device comprised by at least one of the plurality of subpixels has on the backboard.

3. The light-emitting panel according to claim 2 , wherein the convex lens array comprises the plurality of convex lenses distributed in one-to-one correspondence with the plurality of subpixels, and an orthographic projection that each convex lens of the plurality of convex lenses has on the backboard overlaps the orthographic projection that the light-emitting layer of the electroluminescence device corresponding to a subpixel has on the backboard.

4. The light-emitting panel according to claim 1 , further comprising an encapsulation film, wherein the encapsulation film is between the electroluminescence device and the convex lens array, and the encapsulation film directly contacts the adhesive layer and the convex lens array.

5. The light-emitting panel according to claim 1 , wherein the backboard is a driving circuit board comprising a driving circuit, and the driving circuit is configured to drive the electroluminescence device to emit light.

6. The light-emitting panel according to claim 1 , wherein concave patterns are at the side of the adhesive layer close to the electroluminescence device, fillers are respectively provided in the concave patterns, and the fillers are the plurality of convex lenses.

7. The light-emitting panel according to claim 6 , wherein a refractive index of the fillers is greater than a refractive index of the adhesive layer.

8. The light-emitting panel according to claim 1 , wherein a refractive index of the plurality of convex lenses is greater than a refractive index of the adhesive layer.

9. The light-emitting panel according to claim 1 , wherein the plurality of convex lenses are planoconvex lenses, each of the planoconvex lenses comprises a planar portion and a curved portion, and the planar portion is between the curved portion and the electroluminescence device.

10. The light-emitting panel according to claim 1 , wherein the plurality of convex lenses directly contact the electroluminescence device and the adhesive layer.

11. The light-emitting panel according to claim 1 , wherein the medium is air.

12. The light-emitting panel according to claim 1 , wherein the adhesive layer directly contacts the plurality of convex lenses and the cover plate.

13. The light-emitting panel according to claim 1 , wherein a multilayered adhesive film is adopted as the adhesive layer.

14. The light-emitting panel according to claim 1 , wherein the plurality of convex lenses are spaced apart from each other.

15. The light-emitting panel according to claim 1 , further comprising an encapsulation film, wherein
the encapsulation film is between the electroluminescence device and the convex lens array,
the plurality of convex lenses directly contact the adhesive layer,
a refractive index of the plurality of convex lenses is greater than a refractive index of the adhesive layer, and
portions which are comprised by the adhesive layer and are in gaps between adjacent ones of the plurality of convex lenses are adhered directly to the encapsulation film.

16. The light-emitting panel according to claim 15 , wherein the cover plate is at an outermost side of the light-emitting panel, and the adhesive layer directly contacts the cover plate.

Assignees

• Hefei Xinsheng Optoelectronics Technology Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Kong Yubao
• Xie Xuewu
• Ai Yu
• Liu Bowen
• Sun Shi
• Liu Hao
• Zhang Ameng

Classifications

• H10K59/879

  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

• H10K59/8722

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

• H10K59/12

  Active-matrix OLED [AMOLED] displays · CPC title

• H10K50/858

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