Backlight unit, display panel and display device

• US 10,203,445 B2
• Filed: 12/11/2015
• Issued: 02/12/2019
• Est. Priority Date: 08/20/2015
• Status: Expired due to Fees

• Current Assignee: Beijing Boe Chatani Electronics Co., Ltd. (BOE Technology Group Co., Ltd.), BOE Technology Group Co., Ltd.
• Original Assignee: Beijing Boe Chatani Electronics Co., Ltd. (BOE Technology Group Co., Ltd.), BOE Technology Group Co., Ltd.
• Inventors: Qiao, Zhonglian
• Primary Examiner(s): Breval, Elmito
• Application Number:
  US15/125,464
• Publication Number:
  US 20180172890A1
• Time in Patent Office: 1,159 Days
• Field of Search: None
• CPC Class Codes: G02B 6/0031 Reflecting element, sheet or layer
• CPC Class Codes: G02B 6/005 provided by one optical element, or plurality thereof, placed on the light output side of the light guide
• CPC Class Codes: G02B 6/0055 Reflecting element, sheet or layer
• CPC Class Codes: G02B 6/0081 Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
• CPC Class Codes: G02F 1/133308 Support structures for LCD panels, e.g. frames or bezels
• CPC Class Codes: G02F 1/133314 Back frames
• CPC Class Codes: G02F 1/133322 Mechanical guidance or alignment of LCD panel support components
• CPC Class Codes: G02F 1/133602 Direct backlight
• CPC Class Codes: G02F 1/133615 Edge-illuminating devices, i.e. illuminating from the side

Abstract

A backlight unit, a display panel and a display device are provided. The backlight unit includes a plurality of fixed supports (4) and a back plate (1) provided with a receiving space. Each of the fixed supports (4) is connected to an outer side of a side wall of the back plate (1) and includes a blocking part (41) protruding into upper portion of the receiving space of the back plate (1).

Claims

1. A backlight unit comprising,

a plurality of fixed supports,

a back plate provided with a receiving space, wherein each of the fixed supports is connected to an outer side of a side wall of the back plate and comprises a blocking part protruding into upper portion of the receiving space of the back plate;

a bottom reflector, a light-guide plate and an optical film unit, which are located within the receiving space, wherein the light-guide plate is located on the bottom reflector, and the optical film unit is located on the light-guide plate and below the blocking parts of the plurality of fixed supports,

wherein the bottom reflector, the light-guide plate and the optical film unit are each provided with a lug, and the side wall of the back plate is provided with a first notch cooperating with the lug.

2. The backlight unit according to claim 1, wherein an outer side of each side wall of the back plate is correspondingly connected to at least one of the fixed supports.

3. The backlight unit according to claim 2, wherein each of the fixed supports is connected to the outer side of each side wall of the back plate through a fastener.

4. The backlight unit according to claim 2, wherein each of the fixed supports is an L-shaped fixed support.

5. The backlight unit according to claim 3, wherein each of the fixed supports is an L-shaped fixed support.

6. The backlight unit according to claim 1, wherein each of the fixed supports is connected to the outer side of each side wall of the back plate through a fastener.

7. The backlight unit according to claim 6, wherein each of the fixed supports is an L-shaped fixed support.

8. The backlight unit according to claim 1, wherein each of the fixed supports is an L-shaped fixed support.

9. The backlight unit according to claim 1, wherein at least one of the fixed supports is disposed at a position of the first notch in the side wall of the back plate and is provided with a second notch cooperating with the lug.

10. A display panel, comprising a liquid crystal (LC) panel and a backlight unit, wherein the backlight unit comprises:

a plurality of fixed supports,

a back plate provided with a receiving space, wherein each of the fixed supports is connected to an outer side of a side wall of the back plate and comprises a blocking part protruding into upper portion of the receiving space of the back plate;

a bottom reflector, a light-guide plate and an optical film unit, which are located within the receiving space, wherein the light-guide plate is located on the bottom reflector, and the optical film unit is located on the light-guide plate and below the blocking parts of the plurality of fixed supports,

wherein the bottom reflector, the light-guide plate and the optical film unit are each provided with a lug, and the side wall of the back plate is provided with a first notch cooperating with the lug,

wherein the LC panel is fixed on the blocking parts of the plurality of fixed supports of the backlight unit.

11. The display panel according to claim 10, wherein the LC panel is fixed on the blocking parts of the plurality of fixed supports of the backlight unit through a double-sided tape.

12. The display panel according to claim 10, wherein an outer side of each side wall of the back plate is correspondingly connected to at least one of the fixed supports.

13. The display panel according to claim 10, wherein each of the fixed supports is connected to the outer side of each side wall of the back plate through a fastener.

14. The display panel according to claim 10, wherein each of the fixed supports is an L-shaped fixed support.

15. The display panel according to claim 10, wherein at least one of the fixed supports is disposed at a position of the first notch in the side wall of the back plate and is provided with a second notch cooperating with the lug.

16. A display device, comprising a display panel, wherein the display panel comprises:

a liquid crystal (LC) panel and a backlight unit, wherein the backlight unit comprises;

a plurality of fixed supports,

a back plate provided with a receiving space, wherein each of the fixed supports is connected to an outer side of a side wall of the back plate and comprises a blocking part protruding into upper portion of the receiving space of the back plate;

a bottom reflector, a light-guide plate and an optical film unit, which are located within the receiving space, wherein the light-guide plate is located on the bottom reflector, and the optical film unit is located on the light-guide plate and below the blocking parts of the plurality of fixed supports,

wherein the bottom reflector, the light-guide plate and the optical film unit are each provided with a lug, and the side wall of the back plate is provided with a first notch cooperating with the lug,

wherein the LC panel is fixed on the blocking parts of the plurality of fixed supports of the backlight unit.

17. The display device according to claim 16, wherein an outer side of each side wall of the back plate is correspondingly connected to at least one of the fixed supports.

18. The display device according to claim 16, wherein each of the fixed supports is connected to the outer side of each side wall of the back plate through a fastener.

19. The display device according to claim 16, wherein each of the fixed supports is an L-shaped fixed support.

20. The display device according to claim 16, wherein at least one of the fixed supports is disposed at a position of the first notch in the side wall of the back plate and is provided with a second notch cooperating with the lug.