TWI507776B - Positioning structure of backlight module - Google Patents

Description

Positioning structure of backlight module

The present invention relates to a backplane, and more particularly to a positioning structure for a backlight module applied to a liquid crystal display.

In the liquid crystal display, one of the main key modules is the backlight module. The backlight module can provide sufficient and appropriate light to enable the liquid crystal display to display or develop normally. In the prior art, the backlight module can be roughly classified into a direct type backlight module and an edge light type backlight module according to the arrangement mode of the light source.

In the prior art, the positioning arrangement of components such as an optical film or a liquid crystal glass is mostly achieved by directly forming a positioning structure on the back plate of the backlight module. However, even for liquid crystal displays of the same size, the optical film or liquid crystal glass may be slightly different in size depending on the supplier. In this case, it is necessary to respond to optical films or liquid crystals provided by different manufacturers. Different back sheets are developed for glass, in order to properly position components such as optical films or liquid crystal glass. In this way, the number of mold developments on the backplane is greatly increased, thereby increasing the cost.

As described above, the inventors of the present invention have been painstakingly researching for many years, thinking about and designing a positioning structure of a backlight module to improve the lack of the prior art, thereby enhancing the implementation and utilization of the industry.

In view of the above-mentioned problems of the prior art, the object of the present invention is to provide a positioning structure of a backlight module, so as to solve the problem that the back plate of the conventional backlight module cannot properly position different optical films or liquid crystal glasses. Cost issue.

According to the purpose of the present invention, a positioning structure of a backlight module is provided, which comprises a back plate and at least two positioning members. The positioning member is disposed on opposite sides of the backboard; the positioning member has an L-shaped structure to be divided into a long side portion and a short side portion, the long side portion is attached to the back board, and the short side portion is located opposite to One side of the long side portion of the backboard, and the short side portion has a positioning surface, and the positioning surface faces the center of the backboard. Wherein, the distance between the opposite two positioning faces corresponds to the width or length of a liquid crystal glass.

Preferably, the long side portion of the positioning member is convexly disposed with respect to one side of the back plate, and the positioning portion is formed corresponding to the positioning notch of the optical film, and the positioning portion is embedded in the positioning notch.

Preferably, the back plate can be provided with at least two grooves to accommodate the positioning member, and the height of the positioning portion corresponds to the depth of the groove.

Preferably, the groove may be provided with a fixing rib; the fixing rib corresponds to the position of the short side portion, the short side portion has a fixing groove, and the fixing rib is embedded in the fixing groove, and the fixing rib portion is wave-shaped to be tightly fitted and fixed groove.

Preferably, the groove may be provided with a locking hole, and the long side portion of the positioning member has a through hole corresponding to the locking hole; the positioning member passes through the through hole through the bolting piece and is locked to the locking hole, and is fixed to the fixing hole In the groove.

Preferably, a clamping portion is respectively disposed on both sides of the groove, and the long side portion of the positioning member is A hook portion is respectively disposed on the two sides; the positioning member is fixed in the groove by the hook portion being engaged with the engaging portion.

Preferably, the positioning member can be fixed in the groove by pasting.

According to the above description, the positioning structure of the backlight module of the present invention is characterized in that the positioning member is disposed on the back plate, and the different positioning members can be used to appropriately adjust the liquid crystal glass corresponding to different sizes. The distance between the positioning faces to achieve good positioning of the liquid crystal glass. In addition, the positioning structure of the backlight module of the present invention can also be embedded in the positioning notch by using the positioning portion, so that the positioning structure of the backlight module can have the effect of determining the position of the optical film. The present invention can effectively reduce the number and cost of mold development by the above.

1‧‧‧ Positioning structure of backlight module

10‧‧‧ Backboard

11‧‧‧ Groove

12‧‧‧

13‧‧‧Fixed ribs

14‧‧‧Lock hole

15‧‧‧Clock Department

20‧‧‧ Positioning parts

21‧‧‧Longside

211‧‧‧through hole

212‧‧‧K hook section

213‧‧‧ Positioning Department

22‧‧‧ Short side

221‧‧‧ positioning surface

222‧‧‧fixed slot

3‧‧‧Adhesive layer

7‧‧‧Bolts

8‧‧‧Liquid glass

9‧‧‧Optical diaphragm

91‧‧‧ Positioning gap

L1‧‧‧ the distance between the two opposite positioning faces

L2‧‧‧The width or length of the LCD glass

1 is a partial schematic view showing a first embodiment of a positioning structure of a backlight module of the present invention.

2 is a schematic overall view of a first embodiment of a positioning structure of a backlight module of the present invention.

3 is a first combined schematic view of a first embodiment of a positioning structure of a backlight module of the present invention.

Figure 4 is a second combination diagram of the first embodiment of the positioning structure of the backlight module of the present invention.

Figure 5 is a third combination diagram of the first embodiment of the positioning structure of the backlight module of the present invention.

Figure 6 is a partial schematic view showing a second embodiment of the positioning structure of the backlight module of the present invention.

Figure 7 is a combination diagram of a second embodiment of the positioning structure of the backlight module of the present invention.

The technical features, contents, and advantages of the present invention, as well as the advantages thereof, can be understood by the present inventors, and the present invention will be described in detail with reference to the accompanying drawings. The subject matter is only for the purpose of illustration and description, and is not necessarily the true proportion and precise configuration after the implementation of the present invention. Therefore, the scope and configuration relationship of the attached drawings should not be interpreted or limited. First described.

The embodiments of the positioning structure of the backlight module according to the present invention will be described below with reference to the related drawings. For the sake of understanding, the same components in the following embodiments are denoted by the same reference numerals.

Please refer to FIG. 1 and FIG. 2 together, which are partial schematic and overall schematic views of a first embodiment of a positioning structure of a backlight module of the present invention. The positioning structure 1 of the backlight module of the present invention can be applied to a liquid crystal display, and is preferably applied to a backlight module of a liquid crystal display. As shown in the figure, the positioning structure 1 of the backlight module comprises a backing plate 10 and at least two positioning members 20. The backsheet 10 can be used to carry an optical film, liquid crystal glass, or both, which can be made of a metal or plastic material. In addition, at least two grooves 11 may be disposed on the back plate 10 to accommodate the positioning members 20, and are respectively located on opposite side edges of the back plate 10. In the present embodiment, the number of the grooves 11 is exemplified by four, but is not limited thereto. The preferred grooves 11 are respectively disposed on the sides of the four corners of the back plate 10. On the other hand, the positioning member 20 can be made of a metal or plastic material, which is disposed in the recess 11 corresponding to the recess 11. The positioning member 20 is substantially L-shaped to be divided into a long side portion 21 and a short side portion 22; the long side portion 21 is for attaching to the back panel 10, and the short side portion 22 is located opposite to the back portion. One side of the long side portion 21 of the board 10. Worth special It should be noted that the short side portion 22 has a positioning surface 221 which is centered on the back plate 10, and the distance between the opposite two positioning surfaces 221 corresponds to the width or length of a liquid crystal glass 8.

Referring to FIG. 2, since the distance L1 between the two opposite positioning surfaces 221 parallel to the direction of the direction is equal to or slightly larger than the width or length L2 of the liquid crystal glass 8, the positioning structure of the backlight module of the present invention is The two opposite positioning members 20 are used to limit the degree of freedom of the liquid crystal glass 8 in the opposite direction of the two positioning members 20. In the present embodiment, the two positioning members 20 are used to restrict the degree of freedom in the up-and-down direction of the liquid crystal glass 8, and the other two positioning members 20 are used to limit the degree of freedom in the left-right direction of the liquid crystal glass 8. When corresponding to the liquid crystal glass 8 of different sizes, only one of the two opposite positioning members 20 needs to be replaced, and the distance L1 between the opposite two positioning surfaces 221 can be adjusted to correspond to the width of the liquid crystal glass 8. Or length L2, without the need to develop or make additional backplanes, which can effectively save the development cost of backplane molds. After the positioning of the positioning member 20 is completed, the liquid crystal glass 8 can be directly carried on the rim 12 of the backing plate 10, that is, the top and bottom of the positioning surface 221 of the positioning member 20 can be effectively positioned.

It should be particularly noted that the positioning member 20 is disposed on the groove 11 of the back plate 10, and can be fixed by means of tight fitting, snapping, screw locking or pasting. The following will be further explained one by one.

Please refer to Figure 1. As shown, the recess 11 may be provided with a fixing rib 13 adjacent to the edge of the back plate 10, and the fixing rib 13 corresponds to the position of the short side portion 22. Correspondingly, the short side portion 22 may have a fixing groove 222 corresponding to the fixing rib 13 so that the fixing rib 13 can be embedded in the fixing groove 222. The fixing rib 13 is slightly larger than the longitudinal direction dimension or the short side dimension of the fixing groove 222 by the longitudinal direction dimension or the short side direction dimension of the fixing rib 13 to achieve the purpose of tight fitting. In addition, the fixing ribs 13 may be partially undulated, so that the short-side direction of the fixing ribs 13 is slightly larger than the short-side direction of the fixing groove 222, so that it can be tightly fitted in the fixing groove 222 and has a fixing rib. 13 structural strength.

Please refer to FIG. 3 , which is a first combination diagram of a first embodiment of a positioning structure of a backlight module of the present invention. As shown in the figure, the recess 11 can be provided with a locking hole 14. The long side portion 21 of the positioning member 20 can have a through hole 211 corresponding to the locking hole 14; therefore, the through hole 211 can be passed through a bolt 7. And locked to the locking hole 14 to achieve the purpose of the positioning member 20 being fixed in the groove 11. Incidentally, the number of the locking holes 14 and the through holes 211 can be adjusted according to the actual application, and therefore the above exemplary aspects should not be limited.

Please refer to FIG. 4 , which is a second combination diagram of the first embodiment of the positioning structure of the backlight module of the present invention. As shown in the figure, the two sides of the groove 11 can be respectively provided with an engaging portion 15, that is, the engaging portion 15 is on the side 12 of the two sides of the groove 11, and the two sides of the long side portion 21 of the positioning member 20 are The side of the corresponding engaging portion 15 is provided with a hook portion 212. Thereby, when the positioning member 20 is received in the recess 11 , the hook portion 212 is engaged with the engaging portion 15 , so that the positioning member 20 can be stably fixed in the recess 11 . 5

Please refer to FIG. 5 , which is a third combination diagram of the first embodiment of the positioning structure of the backlight module of the present invention. The positioning member 20 can be fixed in the groove 11 by adhesive bonding. As shown in the figure, an adhesive layer 3 may be disposed between the positioning member 20 and the recess 11 , which may be an adhesive or a double-sided layer, so that the positioning member 20 can be adhered to the adhesive layer 3 . In the groove 11.

In addition, the positioning structure 1 of the backlight module of the present invention can simultaneously have the effect of positioning the optical film 9. This will be described in detail below.

Please refer to FIG. 6 and FIG. 7 respectively, which are partial schematic and combined schematic views of a second embodiment of the positioning structure of the backlight module of the present invention. The optical film 9 is disposed between the positioning member 20 and the liquid crystal glass 8 . As shown in the figure, the long side portion 21 of the positioning member 20 can be convexly disposed with respect to one side of the back plate 10 to provide a positioning portion 213. At this time, the optical film 9 can be disposed with a positioning notch 91 corresponding to the positioning portion 213, that is, a position corresponding to the positioning portion 213 at the edge of the optical film 9 can be extended and convexly provided with a convex portion, and is disposed on the convex portion. Positioning the notch 91. Therefore, when optics When the diaphragm 9 is carried on the back plate 10, the positioning portions 213 can be respectively embedded in the positioning notches 91, thereby allowing the optical film 9 to be properly and stably positioned on the back plate 10, and then, further facilitating further The liquid crystal glass 8 is disposed thereon.

It is particularly worth mentioning that since the groove 11 is recessed by the rim 12, the rim 12 is for the liquid crystal glass 8 to bear. Therefore, preferably, the positioning portion 213 should be disposed corresponding to the groove 11. In short, the height of the positioning portion 213 should not exceed the rim 12, but can be less than or equal to the height of the rim 12 so that when the liquid crystal glass 8 bears against the rim 12, it is not affected by the positioning portion 213. The planarity of the liquid crystal glass 8.

As described above, the positioning structure of the backlight module of the present invention can enable the back plate to properly carry the optical film and the liquid crystal glass, and can replace the appropriate positioning member for the liquid crystal glass of different sizes. Reduce mold development costs.

The above is intended to be illustrative only and not limiting. Any equivalent modifications or alterations to the spirit and scope of the invention are intended to be included in the scope of the appended claims.

1‧‧‧ Positioning structure of backlight module

10‧‧‧ Backboard

11‧‧‧ Groove

13‧‧‧Fixed ribs

20‧‧‧ Positioning parts

21‧‧‧Longside

22‧‧‧ Short side

221‧‧‧ positioning surface

222‧‧‧fixed slot

Claims (7)

A positioning structure of a backlight module, comprising: a back plate, at least two grooves; at least two positioning members are disposed on opposite sides of the back plate, the positioning member is L-shaped The structure is divided into a long side portion and a short side portion, the long side portion is attached to the back plate, and the short side portion is located on one side of the long side portion with respect to the back plate, and the The short side portion has a positioning surface facing the center of the back plate, wherein the outer shape of the groove corresponds to the shape of the positioning member to accommodate the positioning member; wherein the two opposite positioning surfaces are The distance between them corresponds to the width or length of a liquid crystal glass. The positioning structure of the backlight module of claim 1, wherein the long side portion of the positioning member protrudes from a side of the back plate to provide a positioning portion corresponding to an optical film. One of the pieces is positioned outside the notch, and the positioning portion is embedded in the positioning notch. The positioning structure of the backlight module of claim 2, wherein the back plate is provided with at least two grooves for accommodating the positioning member, and the height of the positioning portion corresponds to the depth of the groove. . The positioning structure of the backlight module according to claim 1 or 2, wherein the groove is provided with a fixing rib corresponding to the position of the short side portion, and the short side portion has a fixing a groove, and the fixing rib is embedded in the fixing groove, and the fixing rib portion is wave-shaped to fit tightly in the fixing groove. The positioning structure of the backlight module of claim 1 or 2, wherein the groove is provided with a locking hole, and the long side portion of the positioning member has a through hole corresponding to the locking hole, the positioning The piece is passed through the through hole by a bolt and is locked to the locking hole to be fixed in the groove. The positioning structure of the backlight module of claim 1 or 2, wherein the two sides of the groove are respectively provided with an engaging portion, and the two sides of the long side of the positioning member are respectively provided with a card. In the hook portion, the positioning member is fixed in the groove by the hook portion being engaged with the engaging portion. The positioning structure of the backlight module according to claim 1 or 2, wherein the positioning member is fixed in the groove by adhesive bonding.