Light bar, backlight module and display device

Patent metadata

Field	Value
Publication number	US-10962829-B1
Application number	US-202016835815-A
Country	US
Kind code	B1
Filing date	Mar 31, 2020
Priority date	Mar 31, 2020
Publication date	Mar 30, 2021
Grant date	Mar 30, 2021

Abstract

The disclosure provides a light bar, a backlight module and a display device. The light bar includes a plurality of lamp beads, wherein each of the lamp beads is a dual-crystal lamp with two light-emitting crystals.

First claim

What is claimed is:

1. A light bar comprising a plurality of dual-crystal lamps, wherein each of the plurality of dual-crystal lamps has two light-emitting crystals,
the plurality of dual-crystal lamps are divided into two lamp strings connected in parallel,
each of the two lamp strings comprises at least two dual-crystal lamps of the plurality of dual-crystal lamps arranged along a first direction and electrically connected in series, and
the two light-emitting crystals in each of the two dual-crystal lamps are sequentially arranged along the first direction,
the plurality of dual-crystal lamps belonging to the two lamp strings are arranged alternately along a single straight line,
a conductive wire for connecting dual-crystal lamps in a first lamp string of the two lamp strings is on a first side of the single straight line, and a conductive wire for connecting dual-crystal lamps in a second lamp string of the two lamp strings is on a second side of the single straight line opposite to the first side.

2. The light bar according to claim 1 , wherein
the dual-crystal lamp further comprises a housing,
the housing has a receiving space for receiving the light-emitting crystals, a first light outlet, and a second light outlet,
a light beam emitted from a first light-emitting crystal of the two light-emitting crystals is output through the first light outlet, and
a light beam emitted from a second light-emitting crystal of the two light-emitting crystals is output through the second light outlet.

3. The light bar according to claim 1 , wherein each of the lamp strings has the same number of dual-crystal lamps.

4. The light bar according to claim 3 , further comprising a positive terminal and a negative terminal, wherein
the plurality of lamp strings are connected in parallel between the positive terminal and the negative terminal.

5. A backlight module comprising a plurality of light bars connected in parallel, each of which is the light bar according to claim 4 .

6. The backlight module according to claim 5 , wherein each of the light bars comprises the same number of lamp strings.

7. The backlight module according to claim 6 , further comprising a power supply chip having a plurality of power supply channels electrically connected to the plurality of light bars in a one-to-one correspondence.

8. A display device comprising a backlight module, which is the backlight module according to claim 5 .

9. The light bar according to claim 1 , wherein
the dual-crystal lamp has two dual-crystal light-emitting diode,
PN junctions of the two dual-crystal light-emitting diodes are connected in parallel, and
the two dual-crystal light-emitting diode are packaged together.

Assignees

• Chongqing Boe Optoelectronics Tech Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Zeng Fanjian
• Ma Hebing
• Gao Xianyong
• Lei Sijun
• Liao Haijun
• Li Yunsong
• Ran Bo
• Wu Huan
• Chen Qiang

Classifications

• G02F1/133611

  including means for improving the brightness uniformity · CPC title

• G02F1/133604

  with lamps · CPC title

• G02F1/133602

  Direct backlight · CPC title

• F21S4/28 Primary

  rigid, e.g. LED bars · CPC title

• F21Y2103/10

  comprising a linear array of point-like light-generating elements · CPC title