Display device and backlight module

Patent metadata

Field	Value
Publication number	US-11215875-B2
Application number	US-202017043022-A
Country	US
Kind code	B2
Filing date	Jul 6, 2020
Priority date	Jun 2, 2020
Publication date	Jan 4, 2022
Grant date	Jan 4, 2022

Abstract

The present invention provides a display device and a backlight module. The backlight module includes a substrate, an ink layer, and a plurality of light-emitting units, wherein the substrate includes a first end and a second end oppositely arranged, the ink layer is disposed on the substrate, the ink layer includes a plurality of hollow-carved units arranged gradually from the first end to the second end, and at least two light-emitting units are disposed on the ink layer in an array arrangement.

First claim

What is claimed is:

1. A backlight module, comprising:
a substrate comprising a first end and a second end arranged opposite to each other;
an ink layer disposed on the substrate and comprising a plurality of hollow-carved units arranged in a reduced density from the first end to the second end; and
a plurality of light-emitting units disposed on the ink layer in an array arrangement.

2. The backlight module as claimed in claim 1 , wherein in each column of the hollow-carved units in a direction perpendicular to a direction from the first end to the second end, a number of the hollow-carved units in each column is gradually reduced from the first end to the second end.

3. The backlight module as claimed in claim 2 , wherein in two adjacent columns of the hollow-carved units, an interval between two adjacent hollow-carved units in a same column closer to the first end is less than an interval between another two adjacent hollow-carved units in a same column farther from the first end.

4. The backlight module as claimed in claim 1 , wherein in each column of the hollow-carved units in a direction perpendicular to a direction from the first end to the second end, an area of the hollow-carved units in each column is gradually reduced from the first end to the second end.

5. The backlight module as claimed in claim 1 , wherein a ratio of a sum of an area of the hollow-carved units in a same column at the second end to a sum of an area of the hollow-carved units in a same column at the first end ranges from 0.05 to 0.3.

6. The backlight module as claimed in claim 1 , wherein the backlight module further comprises an optical film disposed on the light-emitting units and used for transmitting light emitted by the light-emitting units.

7. The backlight module as claimed in claim 6 , wherein the optical film comprises a plurality of dot structures distributed in an array, and at least one of the light-emitting units corresponds to a center of the dot structures distributed in the array.

8. The backlight module as claimed in claim 7 , wherein the dot structures comprise a plurality of protrusions, and at least two of the protrusions are arranged in an array.

9. The backlight module as claimed in claim 1 , wherein the ink layer is formed by mixing a white ink and a metal oxide.

10. The backlight module as claimed in claim 1 , wherein a light transmittance of the ink layer closer to the first end is greater than a light transmittance of the ink layer farther from the first end.

11. A display device, comprising a backlight module, wherein the backlight module comprises:
a substrate comprising a first end and a second end arranged opposite to each other;
an ink layer disposed on the substrate and comprising a plurality of hollow-carved units arranged in a reduced density from the first end to the second end; and
a plurality of light-emitting units disposed on the ink layer in an array arrangement.

12. The display device as claimed in claim 11 , wherein in each column of the hollow-carved units in a direction perpendicular to a direction from the first end to the second end, a number of the hollow-carved units in each column is gradually reduced from the first end to the second end.

13. The display device as claimed in claim 12 , wherein in two adjacent columns of the hollow-carved units, an interval between two adjacent hollow-carved units in a same column closer to the first end is less than an interval between another two adjacent hollow-carved units in a same column farther from the first end.

14. The display device as claimed in claim 11 , wherein in each column of the hollow-carved units in a direction perpendicular to a direction from the first end to the second end, an area of the hollow-carved units in each column is gradually reduced from the first end to the second end.

15. The display device as claimed in claim 11 , wherein a ratio of a sum of an area of the hollow-carved units in a same column at the second end to a sum of an area of the hollow-carved units in a same column at the first end ranges from 0.05 to 0.3.

16. The display device as claimed in claim 11 , wherein the backlight module further comprises an optical film disposed on the light-emitting units and used for transmitting light emitted by the light-emitting units.

17. The display device as claimed in claim 16 , wherein the optical film comprises a plurality of dot structures distributed in an array, and at least one of the light-emitting units corresponds to a center of the dot structures distributed in the array.

18. The display device as claimed in claim 17 , wherein the dot structures comprise a plurality of protrusions, and at least two of the protrusions are arranged in an array.

19. The display device as claimed in claim 11 , wherein the ink layer is formed by mixing a white ink and a metal oxide.

20. The display device as claimed in claim 11 , wherein a light transmittance of the ink layer closer to the first end is greater than a light transmittance of the ink layer farther from the first end.

Assignees

• Tcl China Star Optoelectronics Tech Co Ltd

Inventors

• Fu Linlin
• Li Dehua
• Zhang Xin

Classifications

• G02F1/133606

  including a specially adapted diffusing, scattering or light controlling members · CPC title

• G02F1/133603

  with LEDs · CPC title

• G02F1/133605 Primary

  including specially adapted reflectors · CPC title

• G02F1/133611 Primary

  including means for improving the brightness uniformity · CPC title

• G02F1/133612

  Electrical details · CPC title