A liquid crystal display device and a backlight module thereof

Patent metadata

Field	Value
Publication number	US-2016357067-A1
Application number	US-201514892652-A
Country	US
Kind code	A1
Filing date	Apr 16, 2015
Priority date	Jan 8, 2015
Publication date	Dec 8, 2016
Grant date	—

Abstract

The present application discloses a liquid crystal display device and a backlight module thereof. The backlight module comprises a backboard, a separating plate, and a light source component; wherein the backboard has a base plate and a plurality of side plates, and the backboard is an injection moulding board; the separating plate is mounted in an accommodating groove, a heat dissipation chamber is formed between the separating plate and the base plate, in the heat dissipation chamber, the backboard is provided with convection holes; the light source component comprises a plurality of lamp substrates and a plurality of LED lamps mounted on the lamp substrates, the lamp substrates are located within the heat dissipation chamber, and the separating plate is provided with transparent holes enabling light emitted by each of the LED lamps to penetrate the separating plate in a thickness direction of the separating plate.

First claim

1 . A backlight module, comprising a backboard, a separating plate, and a light source component wherein,
the backboard has a base plate and a plurality of side plates so as to form an accommodating groove, and the backboard is an injection moulding board; the separating plate is mounted in the accommodating groove, a heat dissipation chamber is formed between the separating plate and the base plate, in the heat dissipation chamber, the backboard is provided with convection holes communicating the external environment with the heat dissipation chamber, so as to form a gas convection channel with chimney effect in the heat dissipation chamber; and the light source component comprises a plurality of lamp substrates and a plurality of LED lamps mounted on the lamp substrates, the lamp substrates are located within the heat dissipation chamber, each LED lamp is located at a side of the lamp substrate away from the base plate, and the separating plate is provided with transparent holes enabling light emitted by each of the LED lamps to penetrate the separating plate in a thickness direction of the separating plate.

2 . The backlight module according to claim 1 , wherein a surface of a side of the base plate facing towards the separating plate is provided with a plurality of lamp positioning base stations, the lamp substrates are fixed on the lamp positioning base stations, such that air gaps are formed between the lamp substrates and the base plate, the air gaps cooperate with the convection holes arranged on the backboard to form the gas convection channel.

3 . The backlight module according to claim 2 , wherein the surfaces of sides of the lamp substrates away from the base plate and a surface of a side of the separating plate facing towards the base plate are in seal cooperation.

4 . The backlight module according to claim 3 , wherein the surfaces of the sides of the lamp substrates away from the base plate and the surface of the side of the separating plate facing towards the base plate are in seal cooperation through bonding.

5 . The backlight module according to claim 3 , wherein each of the LED lamps penetrates the separating plate through the transparent hole in the thickness direction of the separating plate, so as to extend into a space at the side of the separating plate away from the base plate.

6 . The backlight module according to claim 1 , wherein the side of the separating plate away from the base plate is a reflective side.

7 . The backlight module according to claim 6 , wherein the separating plate comprises a separating plate body and a reflective layer, the reflective layer is located at a side of the separating plate body away from the base plate, a side of the reflective layer away from the separating plate body forms the reflective side.

8 . The backlight module according to claim 6 , wherein the separating plate comprising an aluminum material.

9 . A liquid crystal display device, comprising a backlight module comprising
a backboard, a separating plate, and a light source component; wherein the backboard has a base plate and a plurality of side plates so as to form an accommodating groove, and the backboard is an injection moulding board; wherein the separating plate is mounted in the accommodating groove, a heat dissipation chamber is formed between the separating plate and the base plate, in the heat dissipation chamber, the backboard is provided with convection holes communicating the external environment with the heat dissipation chamber, so as to form a gas convection channel with chimney effect in the heat dissipation chamber; and wherein the light source component comprises a plurality of lamp substrates and a plurality of LED lamps mounted on the lamp substrates, the lamp substrates are located within the heat dissipation chamber, each LED lamp is located at a side of the lamp substrate away from the base plate, and the separating plate is provided with transparent holes enabling light emitted by each of the LED lamps to penetrate the separating plate in a thickness direction of the separating plate.

10 . The liquid crystal display device according to claim 9 , wherein a surface of a side of the base plate facing towards the separating plate is provided with a plurality of lamp positioning base stations, the lamp substrates are fixed on the lamp positioning base stations, such that air gaps are formed between the lamp substrates and the base plate, the air gaps cooperate with the convection holes arranged on the backboard to form the gas convection channel.

11 . The liquid crystal display device according to claim 10 , wherein surfaces of sides of the lamp substrates away from the base plate and a surface of a side of the separating plate facing towards the base plate are in seal cooperation.

12 . The liquid crystal display device according to claim 11 , wherein the surfaces of the sides of the lamp substrates away from the base plate and the surface of the side of the separating plate facing towards the base plate are in seal cooperation through bonding.

13 . The liquid crystal display device according to claim 11 , wherein each of the LED lamps penetrates the separating plate through the transparent hole in the thickness direction of the separating plate, so as to extend into a space at the side of the separating plate away from the base plate.

14 . The liquid crystal display device according to claim 9 , wherein the side of the separating plate away from the base plate is a reflective side.

15 . The liquid crystal display device according to claim 14 , wherein the separating plate comprises a separating plate body and a reflective layer, the reflective layer is located at a side of the separating plate body away from the base plate, a side of the reflective layer away from the separating plate body forms the reflective side.

16 . The liquid crystal display device according to claim 14 , wherein the separating plate comprising an aluminum material.

Assignees

• Boe Technology Group Co Ltd

Inventors

• Ma Yongda
• Gu Jingxia

Classifications

• G02F2001/133628

  Physics · mapped topic

• G02F1/133604

  with lamps · CPC title

• G02F1/133603

  with LEDs · CPC title

• G02F1/133608 Primary

  including particular frames or supporting means · CPC title

• G02F1/133628

  with cooling means · CPC title