CN103322469B - Backlight module and display device adopting same - Google Patents

Abstract

The present invention provides a backlight module and a display device with the backlight module. The backlight module includes: a light guide plate, a positioning column and at least one reinforcing piece; the positioning column is used to fix the light guide plate, and the positioning column The peripheral edge has a first joint part; the reinforcement part is detachably combined with the positioning column, and the reinforcement part has a second joint part; wherein, the reinforcement part passes through the interaction between the first joint part and the second joint part It is fixed and arranged on the periphery of the positioning column. When the light guide plate exerts force on the positioning column in the first direction, the reinforcing member is arranged on the side of the positioning column in the first direction. The invention achieves the purpose of enhancing the strength of the positioning column and preventing the positioning column from skewing by arranging reinforcing pieces on the periphery of the positioning column.

Description

Backlight module and display device with the backlight module

technical field

The invention relates to a backlight module and a display device with the backlight module, in particular to a backlight module with a light guide plate positioning structure and a display device with the backlight module.

Background technique

Currently, in a backlight module with a light guide plate, positioning posts are usually used to fix the light guide plate. As shown in FIG. 1 , it is a schematic structural diagram of a backlight module in the prior art. In Fig. 1, the backlight module includes a base plate 301 and a light guide plate 302, a plurality of recessed parts 3021 are arranged on the periphery of the light guide plate 302, and a plurality of positioning posts 303 are provided on the base plate 301, and the positioning posts 303 cooperate with the recessed parts 3021. for fixing the light guide plate 302 . However, when the backlight module is impacted or vibrated, the positioning post 303 is likely to rub against the light guide plate 302 , which may even cause cracks in the light guide plate, and the positioning post 303 itself will also be skewed.

Contents of the invention

In order to solve the above problems, the present invention proposes a backlight module and a display device having the backlight module. By arranging reinforcing pieces around the positioning posts, the strength of the positioning posts can be enhanced and the positioning posts can be prevented from being skewed.

In order to achieve the above object, the present invention proposes a backlight module, including: a light guide plate, a positioning column and at least one reinforcing piece; the positioning column is used to fix the light guide plate, and the periphery of the positioning column has a first joint; The reinforcing piece is detachably combined with the positioning column, and the reinforcing piece has a second combining portion; wherein, the reinforcing piece is arranged on the periphery of the positioning column through the mutual fixing of the first combining portion and the second combining portion , when the light guide plate exerts a force on the positioning post in the first direction, the reinforcing member is disposed on the side of the positioning post in the first direction.

As an optional technical solution, the backlight module has a plurality of positioning columns, and the light guide plate has a plurality of depressions around it, and the plurality of positioning columns are arranged at the plurality of depressions. When a direction generates the force on the positioning column, the reinforcing member is disposed on the side of the positioning column in the first direction.

As an optional technical solution, one of the first combining portion and the second combining portion is a groove, and the other of the first combining portion and the second combining portion is a protrusion.

As an optional technical solution, the reinforcing member further includes a first supporting portion, and the second combining portion is disposed on the first supporting portion.

As an optional technical solution, the edges of the first support portion are arc-shaped, and when the plurality of reinforcing pieces are fixed to the periphery of the positioning column, the edges of the plurality of first support portions are connected to form a circular ring.

As an optional technical solution, the positioning column includes a first part and a second part, the first part is arranged above the second part, and the junction of the first part and the second part forms a second support part, the The second supporting part is used for supporting the light guide plate.

As an optional technical solution, the first part is a first cylinder, the second part is a second cylinder, and the diameter of the first cylinder is smaller than the diameter of the second cylinder, so that the combination of the first part and the second part Form the second support portion.

As an optional technical solution, the first joint part is arranged on the periphery of the second part. When the second joint part is combined with the first joint part, the upper part of the second joint part is in common with the second supporting part. flat.

As an optional technical solution, the backlight module further includes a bottom plate, the positioning column is fixed on the bottom plate, and the reinforcing member leans against the bottom plate.

The present invention further proposes a display device, which includes the above-mentioned backlight module and a display panel, and the display panel is disposed on the light emitting side of the backlight module.

Compared with the prior art, the positioning column of the present invention is provided with reinforcements around the periphery, and the setting position of the reinforcements can be determined according to the force direction of the positioning column. The design is flexible, so that the strength of the positioning column is enhanced, and the positioning column is prevented from being damaged. The skew and wear of the light guide plate.

Description of drawings

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

Fig. 2 is a schematic diagram of the structure of the positioning column of the present invention.

Fig. 3 is a schematic diagram of the structure of the reinforcement of the present invention.

Fig. 4 is a schematic diagram of the combined structure of the positioning column and the reinforcing member of the present invention.

FIG. 5 is a schematic structural diagram of a backlight module according to an embodiment of the present invention.

FIG. 6 is a schematic structural diagram of a backlight module according to a second embodiment of the present invention.

FIG. 7 is a schematic structural diagram of a backlight module according to a third embodiment of the present invention.

Detailed ways

In order to have a further understanding of the purpose, structure, features, and functions of the present invention, the following detailed descriptions are provided in conjunction with the embodiments.

The structure of the backlight module of the present invention is shown in FIG. 5 , which is a schematic diagram of the structure of the backlight module according to an embodiment of the present invention. 2-4, FIG. 2 is a schematic diagram of the structure of the positioning column of the present invention, FIG. 3 is a schematic diagram of the structure of the reinforcement of the present invention, and FIG. 4 is a schematic diagram of the combined structure of the positioning column and the reinforcement of the present invention. The backlight module of the present invention includes: a light guide plate 400, a positioning column 100, and at least one reinforcing member 200; the positioning column 100 is used to fix the light guide plate 400, and the periphery of the positioning column 100 has a first joint portion 1031; the reinforcement The reinforcing member 200 is detachably combined with the positioning column 100. The reinforcing member 200 has a second combining portion 202; wherein, the reinforcing member 200 is arranged on the positioning column 100 through the mutual fixing of the first combining portion 1031 and the second combining portion 202. On the periphery of the positioning column 100 , when the light guide plate 400 acts on the positioning column 100 in the first direction, the reinforcing member 200 is disposed on the side of the positioning column 100 in the first direction.

The backlight module has a plurality of positioning columns 100, and the light guide plate 400 has a plurality of recesses 401 around it. The plurality of positioning columns 100 are arranged at the plurality of recesses 401. When a direction generates the force on the positioning column 100 , the reinforcing member 200 is disposed on the side of the positioning column 100 in the first direction. It can be shown in FIGS. 5-7 , and FIG. 5 is a schematic structural diagram of a backlight module according to an embodiment of the present invention. FIG. 6 is a schematic structural diagram of a backlight module according to a second embodiment of the present invention. FIG. 7 is a schematic structural diagram of a backlight module according to a third embodiment of the present invention. As shown in FIG. 5 , the recessed portion 401 exerts a force on the positioning column 100 in the first direction A, and the reinforcing member 200 can be arranged on the side of the first direction A of the positioning column 100. The embodiment in FIG. 5 only provides A reinforcing piece 200 is provided, but it is not limited thereto; as shown in FIG. For the reinforcement 200, four interconnected reinforcements 200 are set in FIG. 6; the direction and number of reinforcements 200 can be set according to actual needs. As shown in FIG. When B exerts a force on the positioning column 100 , two reinforcing pieces 200 are provided on the side of the positioning column 100 in the second direction B, and the two reinforcing pieces 200 are connected. The reinforcing member 200 of the present invention is a combinable structure, and the reinforcing member 200 can be selectively installed according to the direction and force of the light guide plate 400 on the positioning column 100, the design is flexible, and it can be increased or decreased according to the actual situation. The number of reinforcements 200 does not need to be designed as a structure in which the reinforcements 200 completely surround the positioning column 100 , which can save costs while ensuring that the positioning column is not skewed.

The specific structures of the positioning column 100 and the reinforcing member 200 will be described in detail below. As shown in FIGS. 2-4 , the first combining portion 1031 of the positioning column 100 is a groove, the second combining portion 202 of the reinforcing member 200 is a protrusion, and the first combining portion 1031 and the second combining The combination of the part 202 is that the groove and the protruding part are engaged with each other. But not limited thereto, the first combining portion 1031 may also be a protrusion, and the second combining portion 202 may be a groove. The groove can be designed as a ladder-shaped groove structure, and the corresponding protrusion can also be designed as a ladder-shaped protrusion, which can make the combination of the two more stable.

The specific structure of the reinforcing piece 200 can be shown in FIG. 3 , the reinforcing piece 200 further includes a first supporting portion 201 , and the second combining portion 202 is disposed on the first supporting portion 201 . As shown in FIG. 3 , the second joint portion 202 of the reinforcing member 200 of the present invention is vertically arranged on the inner edge side of the first support portion 201 and acts as a reinforcing rib. The second joint portion 202 is approximately in a right-angled triangle shape, one of the right-angled sides and the first support portion 201 are fixed to each other, and the other right-angled side protrudes from the first support portion 201 to combine with the positioning column 100, but the second combination portion 202 is not necessarily designed as Right-angled triangles can also be designed as ladders, cuboids, etc., depending on the actual situation. The first supporting part 201 of the present invention is designed as an arc-shaped structure, which can make it easy to join when a plurality of reinforcing pieces 200 are spliced together. When a plurality of the reinforcing pieces 200 are fixed on the periphery of the positioning column 100 The edges of the plurality of first supporting parts 201 can be connected to form a circular ring, as shown in FIG. 4 , which can make the reinforcement structure more stable. The edge of the first supporting part 201 of the reinforcing piece 200 of the present invention is designed to be arc-shaped with a radian of 90°, so that four reinforcing pieces 200 can be spliced into a ring shape. But not limited thereto, the radian design of the edge of the first supporting portion 201 can be set according to actual needs, and the number of reinforcing pieces 200 required to form a circular ring can also be changed accordingly. The first supporting portion 201 is not limited to be designed in an arc shape, and may be determined according to actual conditions. The bottom surface area of the first support part 201 is relatively large, so that the first support part 201 has a large enough supporting force. As an optional technical solution, the bottom surface area of the first support part 201 can be larger than the bottom surface area of the positioning column 100 . In addition, the reinforcing member 200 can be made of metal material, which can increase the strength of the reinforcing member 200, but not limited thereto.

The specific structure of the positioning column 100 can be shown in Figure 2, the positioning column 100 includes a first part 101 and a second part 103, the first part 101 is arranged above the second part 103, and the first part 101 and the The joint of the second part 103 forms the second support part 102 for supporting the light guide plate 400 . In an embodiment of the present invention, the first part 101 is a first cylinder, the second part 103 is a second cylinder, and the diameter of the first cylinder is smaller than the diameter of the second cylinder, so that the first part 101 and the second The junction of the parts 103 forms the second supporting portion 102 . The first joint part 1031 is disposed on the periphery of the second part 103 , when the second joint part 202 is combined with the first joint part 1031 , the top of the second joint part 202 is coplanar with the second support part 102 , thereby increasing the support area. In addition, the positioning post 100 can be made of elastic material, which can reduce the friction between the positioning post 100 and the light guide plate 400 , but not limited thereto.

As shown in FIG. 5 , the backlight module further includes a bottom plate 500 on which the positioning column 100 is fixed. In an embodiment, as shown in FIG. 2 , a base 104 can be provided under the second part 103 of the positioning column 100 , and the fixing of the positioning column 100 to the base plate 500 can be realized by fixing the base 104 to the base plate 500 , the fixing method of the base 104 and the bottom plate 500 may include screw locking, attaching and the like. The first supporting portion 201 of the reinforcement can lean against the bottom plate 500 . Since the contact area between the first supporting portion 201 and the bottom plate 500 is larger than the contact area between the base 104 of the positioning column and the bottom plate 500 , the positioning effect is enhanced.

The present invention further proposes a display device, comprising the above-mentioned backlight module and a display panel disposed on the light-emitting side of the backlight module. Certainly, the backlight module may also include structures such as a diffusion sheet, a prism sheet, and a reflection sheet, and the display device may also include a polarizer, etc., which are known technologies in the art and will not be repeated here. It should be noted that the combined structure of the positioning column and the reinforcing member described in the present invention can also be used for positioning the above-mentioned optical elements such as the diffusion sheet, the prism sheet, the reflective sheet, and the polarizer.

According to the direction and force of the light guide plate 400 on the positioning column 100, the reinforcement 200 of the present invention can select a suitable number and a suitable position, and ensure that the positioning column 100 is not skewed and the light guide plate 400 is not worn. Save costs and increase design flexibility.

The present invention has been described by the above-mentioned related embodiments, however, the above-mentioned embodiments are only examples for implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, changes and modifications made without departing from the spirit and scope of the present invention all belong to the scope of patent protection of the present invention.

Claims (9)

1. A backlight module, characterized in that it comprises: light guide plate; a positioning column for fixing the light guide plate, the periphery of the positioning column has a first joint part; and At least one reinforcing piece is detachably combined with the positioning column, and the reinforcing piece has a second joint portion; Wherein, the reinforcing piece is arranged on the periphery of the positioning post through the mutual fixing of the first joint part and the second joint part, and when the light guide plate exerts a force on the positioning post in the first direction, the reinforcement a component is disposed on the first direction side of the positioning column; The positioning column includes a first part and a second part, the first part is arranged above the second part, and the junction of the first part and the second part forms a second support part, and the second support part is used for supporting The light guide plate. 2. The backlight module according to claim 1, characterized in that: the backlight module has a plurality of the positioning posts, there are a plurality of depressions around the light guide plate, and the plurality of positioning columns are arranged in the plurality of depressions When the concave portion generates the force on the positioning column in the first direction, the reinforcing member is arranged on the side of the positioning column in the first direction. 3. The backlight module according to claim 1, wherein one of the first combining portion and the second combining portion is a groove, and the other of the first combining portion and the second combining portion One is the protrusion. 4. The backlight module as claimed in claim 1, wherein the reinforcing member further comprises a first supporting portion, and the second combining portion is disposed on the first supporting portion. 5. The backlight module as claimed in claim 4, wherein the edge of the first supporting part is arc-shaped, and when the plurality of reinforcing pieces are fixed on the peripheral edge of the positioning column, the plurality of the first supporting parts The edges of the parts are connected to form a circular ring. 6. The backlight module according to claim 1, wherein the first part is a first cylinder, the second part is a second cylinder, and the diameter of the first cylinder is smaller than the diameter of the second cylinder, so that the The joint of the first part and the second part forms the second support part. 7. The backlight module according to claim 1, characterized in that: the first joint part is disposed on the periphery of the second part, when the second joint part is combined with the first joint part, the second joint part The top of the part is coplanar with the second supporting part. 8 . The backlight module as claimed in claim 1 , wherein the backlight module further comprises a bottom plate, the positioning column is fixed on the bottom plate, and the reinforcing member leans against the bottom plate. 9. A display device, characterized in that it comprises: The backlight module as claimed in any one of claims 1-8; and The display panel is arranged on the light emitting side of the backlight module.