CN202972966U

CN202972966U - Back plate of backlight source, backlight source and display device

Info

Publication number: CN202972966U
Application number: CN201220474388.5U
Authority: CN
Inventors: 高振伟
Original assignee: BOE Technology Group Co Ltd; Beijing BOE Display Technology Co Ltd
Current assignee: BOE Technology Group Co Ltd; Beijing BOE Display Technology Co Ltd
Priority date: 2012-09-17
Filing date: 2012-09-17
Publication date: 2013-06-05
Anticipated expiration: 2022-09-17

Abstract

The utility model provides a back plate of a backlight source, which comprises a centre part and a peripheral part, wherein the centre part is used for bearing a light source, the peripheral part is arranged at the periphery of the centre part, and the centre part is detachably connected with the peripheral part. Accordingly, a back light source of the back plate and a display device comprising the back light source are provided. According to the back light source, the dismounting of the light source is better convenient and time saving, and an optical film of the back light source cannot be damaged during dismounting the light source.

Description

Back plate of backlight source, backlight source and display device

Technical Field

The utility model relates to a technical field is made to the display, concretely relates to backplate, backlight and display device of backlight.

Background

Liquid crystal displays have been dominant in the current flat panel display market due to their small size, low power consumption, non-radiative characteristics, and the like. In the lcd, since the liquid crystal itself does not emit Light, it only controls Light, and in order to display an image on the screen of the lcd, a backlight (BLU, Back Light Unit) needs to be installed behind the display Panel (Panel).

Generally, the backlight sources can be divided into an edge type backlight source and a direct type backlight source according to the distribution position of the backlight source, wherein the light source in the edge type backlight source is located at the side of the display panel, and the light source in the direct type backlight source is located at the bottom of the display panel. The direct type backlight source has the advantages of high brightness, simple heat dissipation, good image contrast, local dimming and suitability for large-size liquid crystal displays and the like, and is gradually applied to the industry more widely.

As shown in fig. 1, a conventional direct type backlight generally includes a Back Plate (Back Cover) 2, a Reflector Sheet (Reflector Sheet) 3 and a light source 1 disposed on the Back Plate 2, a Diffuser Plate (Diffuser Plate) 4 disposed on the Reflector Sheet 3, an optical Film (Film) 5 disposed on the Diffuser Plate 4, and a plastic Frame (Mold Frame) 8 disposed on the peripheral edge of the optical Film 5 and fixed on the peripheral edge of the Back Plate 2, a display panel 6 is disposed on the plastic Frame 8 in the direct type backlight, a front iron Frame (Bezel) 7 for fixing the display panel 6 is disposed on the peripheral edge of the display panel 6, and the front iron Frame 7 is fixedly connected to the plastic Frame 8. Wherein, backplate 2 adopts integrated structure, consequently breaks down and when needing to be changed when light source 1, just can dismantle light source 1 after need dismantling preceding chase 7, display panel 6, plastic frame 8, optics diaphragm 5, diffuser plate 4 and reflector plate 3 in proper order, so light source 1's dismantlement is more consuming time under this condition, and is easily to other parts cause the damage in the straight following formula backlight, especially easily cause the damage to optics diaphragm 5, have increased optics diaphragm 5's damage probability.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to the above-mentioned defect that exists among the prior art, provide one kind comparatively convenient when dismantling the light source, save time and can not harm the backplate of the backlight of optics diaphragm, include the backlight of backplate and include the display device of backlight.

The technical scheme adopted for solving the technical problems is as follows:

the back plate of the backlight source comprises a central part and four peripheral parts, wherein the central part is used for bearing a light source, the four peripheral parts are arranged on the periphery of the central part, and the central part is detachably connected with the peripheral parts.

Optionally, the central portions are multiple, the four peripheral portions are arranged on the periphery of all the central portions, the four peripheral portions are detachably connected with the central portions adjacent to the four peripheral portions, and the central portions are detachably connected with each other.

Optionally, the back plate further comprises a detachable connection structure, and the central portion is detachably connected with the peripheral portion through the detachable connection structure.

Optionally, the back plate comprises a plurality of detachable connecting structures, and the four peripheral parts and the central parts adjacent to the peripheral parts are detachably connected through the detachable connecting structures.

Optionally, the detachable connection structure comprises at least one of a bolt, a stud, a screw, and a snap-fit structure.

Optionally, the snap-fit slot structure includes:

one or more snaps and/or one or more detents disposed on an edge of the four peripheral portions adjacent the central portion, and one or more snaps and/or one or more detents disposed on at least one edge of the central portion, wherein the snaps and detents snap to removably connect the four peripheral portions with the edge of the central portion, or removably connect the edges between the central portions.

Optionally, the backlight source is a direct-type backlight source, the back plate includes a bottom plate directly below, four side walls connected to edges of the bottom plate, and a display panel side frame connected to upper edges of the four side walls and fixedly connected to the display panel, wherein:

the central portion includes the bottom plate, and the peripheral portion includes the peripheral side standing walls and the display panel side frame; or,

the central portion includes the bottom plate and the four sides side vertical wall, and the four sides portion includes the display panel side frame.

The utility model discloses provide a backlight simultaneously, including one or more light sources to and above-mentioned backplate.

Optionally, the light source is at least one of a cold cathode fluorescent lamp tube, a light emitting diode and an electroluminescent sheet.

The utility model discloses provide a display device including above-mentioned backlight simultaneously.

Has the advantages that:

in the backplate of backlight, only need pull down the operation that the light source can be changed to the central part, compare with the backplate that adopts integral structure among the prior art backlight, can not harm other parts in the backlight when changing the light source, for example easily damaged optics diaphragm, and the speed of changing the light source is faster, save time more, has correspondingly reduced the cost of labor.

Drawings

FIG. 1 is a schematic diagram of a backlight in the prior art;

fig. 2 is a schematic structural view of a back plate in embodiment 2 of the present invention;

fig. 3 is a schematic structural diagram of a backlight source in embodiment 4 of the present invention.

In the figure: 1-a light source; 2-a back plate; 2 a-four weeks; 2 b-a central part; 3-a reflector plate; 4-a diffusion plate; 5-an optical film; 6-a display panel; 7-front iron frame; 8-plastic frame.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the following describes the back plate of the backlight source, the backlight source including the back plate, and the display device including the backlight source in further detail with reference to the drawings and the embodiments.

Example 1:

the present embodiment provides a back plate of a backlight, which includes a central portion and four peripheral portions, wherein the central portion is used for carrying a light source, the four peripheral portions are disposed on the periphery of the central portion, and the central portion is detachably connected to the peripheral portions.

The back plate of the backlight source with the structure is beneficial to the replacement of the light source: when the light source needs to be replaced, the light source carried by the central part can be detached and replaced only by detaching the central part of the back plate.

It should be noted that, the size and shape of the central portion are not limited, and it is only necessary that when the central portion is detached from the back plate, the light source carried by the central portion can be detached, for example, the central portion may only include a portion for carrying the light source on the bottom plate, or may extend to include the side standing walls around the bottom plate, and at this time, the positions of the detachable connection portions are also different accordingly.

Example 2:

as shown in fig. 2, in the present embodiment, the back plate 2 includes a central portion 2b, a peripheral portion 2a, and a detachable connection structure, the peripheral portion 2a is disposed on the periphery of the central portion 2b, the central portion 2b is used for carrying the light source 1, and the central portion 2b is detachably connected to the peripheral portion 2a through the detachable connection structure.

Optionally, the detachable connection structure includes at least one of a bolt, a stud, a screw, and a snap-fit slot structure, and of course, both the bolt and the stud need to be used in cooperation with a nut. Buckle draw-in groove structure includes: one or more snaps and/or one or more detents provided on an edge of the four peripheral portions 2a adjacent to the central portion 2b, and one or more snaps and/or one or more detents provided on at least one edge of the central portion 2b, wherein the snaps and detents snap to detachably connect the four peripheral portions 2a with the edge of the central portion 2b, or detachably connect the edges between the plurality of central portions 2 b.

To ensure that the central portion 2b can be better fixed to the peripheral portions 2a, at least four of the detachable connection structures are used, and the number of the detachable connection structures increases with the size of the backlight. For example, when the screen size of the display device to which the backlight is applied is more than 14 inches, the central portion 2b is rectangular, and the detachable connection structure adopts a clip and slot structure, the clips and the corresponding slots are at least 10 pairs, wherein at least 6 pairs are respectively disposed on the edges of the two long sides of the central portion 2b and the corresponding edges of the inner sides of the four peripheral portions, and at least 4 pairs are respectively disposed on the edges of the two short sides of the central portion 2b and the corresponding edges of the inner sides of the four peripheral portions.

As shown in fig. 2, the back plate 2 may be further divided into a bottom plate right below, a peripheral side standing wall integrally connected to the bottom plate, and a display panel side frame connected to an upper edge of the peripheral side standing wall and fixedly connected to the display panel. Wherein the central portion 2b comprises the bottom plate, and the peripheral portion 2a comprises the peripheral side walls and the display panel side frame; alternatively, the central portion 2b includes the bottom plate and the four peripheral side walls, and the four peripheral portion 2a includes the display panel side frame.

Other structures and functions in this embodiment are the same as those in embodiment 1, and are not described again here.

Example 3:

this example differs from example 2 in that:

the number of the central parts 2b is multiple, the number of the detachable connecting structures is multiple, the four peripheral parts 2a are arranged on the periphery of all the central parts 2b, the four peripheral parts 2a are detachably connected with the central parts 2b adjacent to the peripheral parts by the detachable connecting structures, and the central parts 2b are detachably connected by the detachable connecting structures.

Other structures and functions in this embodiment are the same as those in embodiment 2, and are not described again here.

Example 4:

as shown in fig. 3, the present embodiment provides a backlight source, which is a direct-type backlight source and includes a light source 1, a back plate 2, a reflective sheet 3, a diffuser plate 4, an optical film 5, and a plastic frame 8. Wherein the backboard 2 is the backboard described in any one of embodiments 1-3.

The light source 1 and the reflector plate 3 are arranged on the back plate 2, the diffuser plate 4 is arranged on the reflector plate 3, the optical diaphragm 5 is arranged on the diffuser plate 4, and the plastic frame 8 is arranged on the peripheral edge of the optical diaphragm 5 and fixed on the peripheral edge of the back plate 2. The reflector 3, the diffuser 4, and the optical film 5 are used for reflecting and diffusing light emitted from the light source to make the light uniformly incident into the display panel above the backlight source, and the plastic frame is used for fixing the back plate 2, the reflector 3, the diffuser 4, and the optical film 5.

The Light source may employ at least one of a Cold Cathode Fluorescent Lamp (CCFL), a Light Emitting Diode (LED), or an electroluminescent sheet (EL).

One or more light sources 1 are adopted, and each light source 1 is arranged on a central part 2b in the back plate 2; when the light source 1 adopts an LED light source, one or more through holes are formed in the reflector plate 3, the number of the through holes is the same as that of the light source 1, and the through holes correspond to the light source 1 one by one, and the area of the through holes is larger than or equal to that of the cross section of the corresponding light source 1, so that when the light source 1 and the reflector plate 3 are both placed on the back plate 2, the top of the light source 1 (i.e., the light emitting part of the light source) can be exposed from the corresponding through holes in the reflector plate 3, and further, the part of the light emitted by the light source 1, which is not directly incident to the diffuser plate 4, can be reflected by the reflector plate 3 and then incident to the diffuser plate 4, thereby improving the brightness.

The diffusion plate 4 is used for uniformly diffusing the light emitted by the light source 1 and the light reflected by the reflection sheet 3, and can play a role in widening a viewing angle and softening the light.

The optical film 5 includes at least one of a prism sheet, a diffusion sheet, and a protection sheet, and the prism sheet, the diffusion sheet, and the protection sheet are at least one layer respectively. The prism sheet has the function of converging the light diffused by the diffusion plate 4 within a certain angle so as to improve the brightness of the backlight source; the diffusion sheet has the same function as the diffusion plate 4 so as to improve the uniformity of the backlight source and play a role in shielding the lamp shadow; the protective sheet is arranged on the outermost side of the prism sheet and the diffusion sheet to protect the prism sheet and the diffusion sheet from being damaged. Those skilled in the art can configure the relative positions and the number of layers of the prism sheet, the diffusion sheet and the protection sheet in the optical film according to actual requirements.

The embodiment also provides a display device comprising the backlight source. The display device may be: the display device comprises any product or component with a display function, such as a liquid crystal panel, electronic paper, an OLED panel, a mobile phone, a tablet personal computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like.

It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.

Claims

1. A backplane of a backlight source, comprising a central part and a surrounding part, the central part is used to carry a light source, and the surrounding parts are arranged on the periphery of the central part, it is characterized in that the central part and the The four sides are detachably connected.

2. The backboard according to claim 1, characterized in that there are multiple central parts, the peripheral parts are arranged on the periphery of all central parts, and the peripheral parts are detachable from the adjacent central parts ground connection, and detachable connection between the plurality of central parts.

3 . The backboard according to claim 1 , wherein the backboard further comprises a detachable connection structure, and the central part is detachably connected to the peripheral parts through the detachable connection structure. 4 .

4. The backboard according to claim 2, characterized in that, the backboard comprises a plurality of detachable connection structures, between the peripheral part and its adjacent central part, and between the plurality of central parts It is detachably connected by a detachable connection structure.

5. The backboard according to claim 3 or 4, wherein the detachable connection structure comprises at least one of bolts, studs, screws, and buckle and slot structures.

6. The backplane according to claim 5, characterized in that, the buckle slot structure comprises:

one or more buckles and/or one or more snap slots arranged on the edge adjacent to the central part of the peripheral part, and one or more buckles arranged on at least one edge of the central part And/or one or more clip slots, wherein the clips and the clip slots are engaged to detachably connect the peripheral parts with the edges of the central part, or detachably connect the edges between multiple central parts.

7. The backplane according to claim 1, wherein the backlight is a direct-type backlight, and the backplane comprises a bottom plate directly below, a surrounding side wall connected to the edge of the bottom plate, and The side frame of the display panel connected to the upper edge of the surrounding side walls and fixedly connected with the display panel, wherein:

The central part includes the bottom plate, and the peripheral part includes the peripheral side walls and the display panel side frame; or,

The central part includes the bottom plate and the peripheral side walls, and the peripheral part includes the display panel side frame.

8. A backlight source, characterized in that it comprises one or more light sources, and the backplane according to any one of claims 1-7.

9 . The backlight according to claim 8 , wherein the light source is at least one of a cold cathode fluorescent tube, a light emitting diode, and an electroluminescent sheet.

10. A display device comprising the backlight according to claim 8 or 9.