Backlight module and display device

Patent metadata

Field	Value
Publication number	US-11307456-B2
Application number	US-202016650393-A
Country	US
Kind code	B2
Filing date	Mar 13, 2020
Priority date	Feb 4, 2020
Publication date	Apr 19, 2022
Grant date	Apr 19, 2022

Abstract

The present disclosure provides a backlight module and a display device. The backlight module includes a substrate, mini LEDs, and at least one conductive reflective layer. The substrate includes a light-emitting area and a non-light-emitting area surrounding the light-emitting area. The mini LEDs are disposed in the light-emitting area of the substrate. The conductive reflective layer covers the whole non-light-emitting area, and the mini LEDs are electrically connected to one conductive reflective layer.

First claim

What is claimed is:

1. A backlight module, comprising:
a substrate comprising a light-emitting area and a non-light-emitting area surrounding the light-emitting area;
a plurality of mini light-emitting diodes (LEDs) disposed in the light-emitting area of the substrate; and
at least one conductive reflective layer covering whole non-light-emitting area, wherein the mini LEDs are electrically connected to the at least one conductive reflective layer;
wherein the at least one conductive reflective layer comprises:
a first conductive reflective layer disposed on the substrate;
a transparent insulating layer disposed on the first conductive reflective layer; and
a second conductive reflective layer disposed on the transparent insulating layer, wherein at least one open groove is defined in the second conductive reflective layer; and
the mini LEDs correspond to the at least one open groove and are electrically connected to the first conductive reflective layer.

2. The backlight module according to claim 1 , wherein the second conductive reflective layer comprises at least one of first reflective wirings and at least one of second reflective wirings in parallel with each other, widths of the second reflective wirings are less than widths of the first reflective wirings, a first gap is defined between the first reflective wirings, the second reflective wirings, or one of the first reflective wirings and one of the second reflective wirings, and the at least one open groove corresponds to the first reflective wirings and the first gap adjacent to the first reflective wirings.

3. The backlight module according to claim 2 , wherein the first conductive reflective layer comprises at least two third reflective wirings in parallel with each other, a second gap is defined between two of the at least two third reflective wirings adjacent to each other, and the second gap corresponds to one of the first reflective wirings, one of the second reflective wirings, or both of them.

4. The backlight module according to claim 1 , wherein the second conductive reflective layer comprises at least two first reflective wirings in parallel with each other, and each open groove corresponds to one of the at least two first reflective wirings.

5. The backlight module according to claim 4 , wherein the first conductive reflective layer comprises at least two second reflective wirings in parallel with each other, a first gap is defined between two of the at least two second reflective wirings adjacent to each other, and the first gap corresponds to one of the at least two first reflective wirings.

6. The backlight module according to claim 5 , wherein a second gap is defined between two of the at least two first reflective wirings adjacent to each other, and the second gap corresponds to one of the at least two second reflective wirings.

7. A display device, comprising the backlight module according to claim 1 .

8. A backlight module, comprising:
a substrate comprising a light-emitting area and a non-light-emitting area surrounding the light-emitting area;
a plurality of mini light-emitting diodes (LEDs) disposed in the light-emitting area of the substrate; and
at least one conductive reflective layer covering whole non-light-emitting area, wherein the mini LEDs are electrically connected to the at least one conductive reflective layer;
wherein the at least one conductive reflective layer comprises:
a first conductive reflective layer disposed on the substrate;
a transparent insulating layer disposed on the first conductive reflective layer; and
a second conductive reflective layer disposed on the transparent insulating layer;
wherein the mini LEDs are electrically connected to the first conductive reflective layer and/or the second conductive reflective layer; and
wherein the first conductive reflective layer comprises at least two first reflective wirings in parallel with each other, a first gap is defined between two of the at least two first reflective wirings adjacent to each other, the second conductive reflective layer comprises at least two second reflective wirings in parallel with each other, and the first gap corresponds to one of the second reflective wirings.

9. The backlight module according to claim 8 , wherein a second gap is defined between two of the at least two second reflective wirings adjacent to each other, and the second gap corresponds to one of the at least two first reflective wirings.

Assignees

• Tcl China Star Optoelectronics Tech Co Ltd

Inventors

• Chen Zhenxia

Classifications

• G02F1/133612 Primary

  Electrical details · CPC title

• G02F1/133603 Primary

  with LEDs · CPC title

• G02F1/133605 Primary

  including specially adapted reflectors · CPC title