CN108254968B

CN108254968B - Backlight module

Info

Publication number: CN108254968B
Application number: CN201711338822.0A
Authority: CN
Inventors: 赵俊廷
Original assignee: Suzhou Dongshan Precision Manufacturing Co Ltd
Current assignee: Suzhou Dongshan Precision Manufacturing Co Ltd
Priority date: 2017-12-14
Filing date: 2017-12-14
Publication date: 2024-04-26
Anticipated expiration: 2037-12-14
Also published as: CN108254968A

Abstract

The embodiment of the invention relates to the technical field of screen display and discloses a backlight module. In the present invention, a backlight module includes: the backplate, fold in proper order and establish light guide plate and panel on the backplate to and be connected with the panel and buckle the flexible circuit board that extends, still include: the plastic part and the framework are arranged at the edge of the backboard, the plastic part abuts against the edge of the panel, the framework is used for wrapping the edge of the backboard, the edge of the panel and the plastic part, a gap is reserved between the framework and the plastic part, and the flexible circuit board is arranged in the gap. The backlight module provided by the invention can firmly support the panel, so that the stability of the whole structure of the backlight module is improved.

Description

Backlight module

Technical Field

The embodiment of the invention relates to the technical field of screen display, in particular to a backlight module.

Background

In the prior art, a display screen backlight module generally comprises a display panel, a light guide plate, a back plate, a flexible circuit board and other components. As the display screen is developed toward a thinner and thinner display panel, the support structure on the light incident side of the display panel is required to be thinner and thinner, and to be assembled with other components in various directions. In the prior art, a sheet metal part is generally used to support the edge of the display panel, so that the display panel can be fixed.

The inventor of the invention discovers that the problem of infirm support of the display panel is caused by large deformation of the sheet metal part, so that the whole structure of the liquid crystal display is unstable.

Disclosure of Invention

The invention provides a backlight module, which enables a panel to be firmly supported, so that the stability of the whole structure of the backlight module is improved.

In order to solve the above technical problems, an embodiment of the present invention provides a backlight module, including: the backplate, fold in proper order and establish light guide plate and panel on the backplate to and be connected with the panel and buckle the flexible circuit board that extends, still include: the plastic part and the frame body are arranged at the edge of the backboard, the plastic part abuts against the edge of the panel, the frame body covers the edge of the backboard, the edge of the panel and the plastic part, a gap is reserved between the frame body and the plastic part, and the flexible circuit board is arranged in the gap.

Compared with the prior art, the embodiment of the invention supports the panel by using the plastic part with small deformation to abut against the edge of the panel, so that the panel can be firmly supported, and the position movement caused by the deformation of the plastic part in the use process can be avoided, thereby improving the stability of the whole structure of the liquid crystal screen backlight module. Meanwhile, the frame body wraps the edges of the backboard, the edges of the panel and the plastic parts, so that the backboard, the panel and the plastic parts are protected; and, the framework with reserve the clearance that is used for holding flexible circuit board between the plastic piece, the plastic piece that the deflection is little is difficult for taking place deformation and extrudees the flexible circuit board in the clearance when supporting the panel, avoids causing the damage to the flexible circuit board.

In addition, the plastic part comprises a main body part and an extension part which is bent and extended from the main body part, wherein the main body part is opposite to the edge of the panel and is arranged at intervals with the edge of the panel, and the extension part extends to the panel and abuts against the edge of the panel.

In addition, the extension part is provided with a bulge extending towards one side far away from the backboard, the extension direction of the bulge is perpendicular to the panel, and the side edge of the bulge abuts against the edge of the panel.

In addition, the edge of the extension part far away from the main body part bends towards the light guide plate to extend and is pressed against the light guide plate. The arrangement is that the extension part can press and hold the light guide plate to fix the light guide plate.

In addition, the backboard protrudes towards the main body to form a positioning flange, an opening is formed in the main body, and the positioning flange stretches into the opening, so that the backboard and the plastic piece are fixed.

In addition, be provided with the strengthening rib on the main part, the strengthening rib is located the main part and deviates from one side of panel, and the edge setting of the adjacent trompil of strengthening rib. The arrangement of the reinforcing ribs is beneficial to increasing the structural strength of the plastic part, so that the plastic part is stronger in structure.

In addition, the frame body is an aluminum pressing piece.

In addition, still include setting up the rigid circuit board in backplate one side of keeping away from the light guide plate, rigid circuit board passes through flexible circuit board and is connected with the panel.

In addition, the plastic part is made of opaque materials.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.

Fig. 1 is a perspective view of a backlight module according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the backlight module of FIG. 1 taken along line A-A;

Fig. 3 is an enlarged view of a portion B in fig. 1.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings. However, those of ordinary skill in the art will understand that in various embodiments of the present invention, numerous technical details have been set forth in order to provide a better understanding of the present invention. The claimed invention may be practiced without these specific details and with various changes and modifications based on the following embodiments.

An embodiment of the present invention relates to a backlight module 10, as shown in fig. 1 and 2, including: the backplate 1, fold in proper order and establish light guide plate 2 and panel 3 on the backplate to and be connected with panel 3 and the flexible circuit board 4 of extension of buckling still include: the plastic part 5 and the frame 6 of setting in the edge of backplate 1, the edge of plastic part 5 support panel 3, the frame 6 will backplate 1's edge the edge of panel 3 and plastic part 5 cladding is inside, the frame 6 with reserve 40 between the plastic part 5, flexible circuit board 4 sets up in the clearance 40.

Compared with the prior art, the embodiment of the invention supports the panel 3 by using the plastic part 5 with small deformation to abut against the edge of the panel 3, so that the panel 3 can be firmly supported, and the position movement caused by the deformation of the plastic part 5 in the use process can not occur, thereby improving the stability of the whole structure of the backlight module 10. Meanwhile, the frame 6 wraps the edges of the back plate 1, the edges of the face plate 3 and the plastic parts 5, so as to protect the back plate 1, the face plate 2 and the plastic parts 5; and, the frame 6 with the clearance that is used for holding flexible circuit board 4 has been reserved between the plastic part 5, and the plastic part 5 that the deflection is little is difficult for taking place deformation and extrusion flexible circuit board 4 in the clearance when supporting the panel, avoids causing the damage to flexible circuit board 4. In addition, the frame 6 arranged outside the flexible circuit board 4 can cover the flexible circuit board 4 inside to play a role of protection, and the flexible circuit board 40 is prevented from being damaged.

The following details of the implementation of the backlight module 10 of the present embodiment are specifically described, and the following details are provided only for facilitating understanding, and are not necessary for implementing the present embodiment.

Specifically, the plastic member 5 includes a main body portion 51 and an extension portion 52 extending from the main body portion 51 in a bending manner, wherein the main body portion 51 is disposed on an edge of the panel 3 and spaced from the edge of the panel 3, the extension portion 52 extends toward the panel 3 and abuts against the edge of the panel 3, and the extension portion 52 supports the edge of the panel 3, so that the panel 3 does not move in position and the stability of the overall structure of the backlight module 10 is not affected.

Further, the extension portion 52 is provided with a protrusion 521 extending toward a side far from the back plate 1, the extending direction of the protrusion 521 is perpendicular to the panel 3, and the side edge of the protrusion 521 abuts against the edge of the panel 3, and the protrusion 521 gives the panel 3 supporting force in a direction perpendicular to the extending direction (the vertical direction shown in fig. 2) itself (the horizontal direction shown in fig. 2), so that the panel 3 does not undergo position movement, and the stability of the overall structure of the backlight module 10 is better.

Specifically, the extending portion 52 extends away from the edge of the main body portion 51 to be folded toward the light guide plate 2 and is pressed against the light guide plate 2. By this arrangement, the extension 52 can press the light guide plate 2 and fix the light guide plate 2.

In this embodiment, the side of the back plate 1 near the plastic part 5 is bent towards the main body 51 to form a flange 12, and the flange 12 can be used for carrying a light source (such as an LED light bar). The flange 12 protrudes towards the main body 51 to form a positioning flange 11, the main body 51 is provided with an opening 510, and the positioning flange 11 extends into the opening 510. In the present embodiment, the flange 11 encloses the through hole 110 penetrating the flange 12, and the frame 6 is provided with a plurality of holes 61, so that the back plate 1, the plastic member 5, and the frame 6 can be fixed by screwing the through hole 110 enclosed by the flange 11 and the through hole 61 provided in the frame 6 from the main body 51 side by screws, rivets, or the like. In this embodiment, the number of the openings 61 is the same as that of the through holes 110, and the openings are arranged in a one-to-one correspondence. It should be noted that the number of the positioning flanges 11 may be set to be plural, and there is no particular limitation here.

In this embodiment, as shown in fig. 3, the body 51 is provided with a reinforcing rib 511, the reinforcing rib 511 is located on a side of the body 51 away from the panel 3, and the reinforcing rib 511 is located adjacent to an edge of the opening 510. The provision of the reinforcing ribs 510 is advantageous for increasing the structural strength of the plastic part 5, so that the plastic part structure is stronger. It should be noted that, the number of the ribs 511 at the edge of each opening 510 may be two, three, four or more, and is not particularly limited. The reinforcing ribs are multiple, so that the structural strength of the plastic part 5 can be further improved. In addition, the reinforcing ribs 511 are symmetrically disposed around the edge of the opening 510. The reinforcing ribs 511 are symmetrically arranged, so that stability and balance of the structure of the plastic part 5 are facilitated.

Preferably, the frame 6 may be an aluminum pressing member. The aluminum casting die has simple manufacturing process and good heat conduction effect, and can radiate heat for the light source. Specifically, the aluminum pressing piece can be an aluminum extruded section, and certain structural strength can be guaranteed due to the aluminum extruded section, so that the aluminum pressing piece is not easy to deform, and therefore the aluminum pressing piece can play a good role in protecting the edge of the back plate 4, the edge of the face plate 1 and the plastic part 7 which are coated in the aluminum pressing piece. In other embodiments, the frame 6 may be made of plastic, and the plastic has a small deformation amount and good fixation, so that the edge of the back plate 4, the edge of the face plate 1, and the structure of the plastic 7 covered with the frame are not affected by external compression deformation, and the frame can be well protected.

In addition, the backlight module 10 further includes a rigid circuit board 7 disposed on a side of the back plate 1 away from the light guide plate 2, and the rigid circuit board 7 is connected to the panel 3 through the flexible circuit board 4.

In the present embodiment, the plastic member 5 is made of a light-impermeable material. The plastic member 5 is made of a light-tight material, so that light emitted by a light source (not shown) and not guided into the light guide plate 2 can be shielded, light leakage phenomenon is avoided, and performance of the backlight module 10 is improved. Preferably, the plastic member 5 is made of a black opaque material, so that light emitted by the light source and not guided into the light guide plate 2 can be absorbed, and the light leakage phenomenon can be better avoided.

It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples of carrying out the invention and that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

Claims

1. A backlight module, comprising: the backplate is overlapped in proper order light guide plate and panel on the backplate, and with the panel is connected and the flexible circuit board of extension of buckling, its characterized in that still includes: the plastic part is arranged at the edge of the back plate and abuts against the edge of the panel, the frame wraps the edge of the back plate, the edge of the panel and the plastic part, a gap is reserved between the frame and the plastic part, and the flexible circuit board is arranged in the gap;

The plastic part comprises a main body part and an extension part which is bent and extended from the main body part, wherein the main body part is opposite to the edge of the panel and is arranged at intervals with the edge of the panel, and the extension part extends to the panel and abuts against the edge of the panel; the backplate is close to one side of plastic part orientation the main part is buckled and is extended, and towards panel one side is buckled and is formed the turn-ups, the turn-ups orientation the main part protrusion forms the locating flange, set up the trompil in the main part, the locating flange stretches into in the trompil in the main part, just the locating flange encloses into a through-hole of penetrating the turn-ups, set up a plurality of trompils on the framework, adopt screw or rivet follow main part one side is twisted the through-hole with the trompil of seting up on the framework.

2. A backlight module according to claim 1, wherein the extension portion is provided with a protrusion extending toward a side away from the back plate, the protrusion extending in a direction perpendicular to the panel, and a side edge of the protrusion abuts against an edge of the panel.

3. A backlight module according to claim 1, wherein the extending portion is bent away from the edge of the main body portion toward the light guide plate and is pressed against the light guide plate.

4. A backlight module according to claim 2, wherein the main body portion is provided with a reinforcing rib, the reinforcing rib is located on a side of the main body portion facing away from the panel, and the reinforcing rib is located adjacent to an edge of the opening.

5. A backlight module according to claim 1, wherein the frame is an aluminum press.

6. A backlight module according to claim 5, further comprising a rigid circuit board disposed on a side of the back plate away from the light guide plate, the rigid circuit board being connected to the panel through the flexible circuit board.

7. A backlight module according to any one of claims 1 to 6, wherein the plastic member is made of a light-impermeable material.