Backlight module and integrated light bar thereof

Abstract

The utility model relates to the technical field of displays, and discloses a backlight module and an integrated light bar thereof, the integrated light bar comprises a light bar PCB, a backlight source and a support column are bonded on the light bar PCB, a support column base of the support column is provided with a dispensing foot, the light bar PCB is provided with a support column dispensing hole, the dispensing foot is clamped in the support column dispensing hole, and the backlight source and the support column are bonded on the light bar PCB. And the dispensing feet are bonded with the dispensing holes of the supporting columns. The supporting columns are bonded on the light bar PCB in a dispensing mode, the process of manually attaching the supporting columns to the backlight module is avoided, and therefore the production efficiency and the productivity of the backlight module are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of displays, and more specifically, to an integrated light bar. In addition, the utility model also relates to a backlight module including the above integrated light bar. Background Art

[0002] When the existing display production line produces a backlight module, after the manual assembly of the light bar is completed, it is necessary to manually attach the support posts to the backplane of the backlight module, as Figure 1 shown, the operation steps are cumbersome and the production efficiency is low.

[0003] In summary, how to improve the production efficiency of the backlight module is an urgent problem to be solved by those skilled in the art at present. Summary of the Utility Model

[0004] In view of this, the purpose of the utility model is to provide an integrated light bar, in which the support posts are adhesively bonded to the light bar PCB, avoiding the process of manually attaching the support posts to the backlight module, and improving the production efficiency and productivity of the backlight module.

[0005] In addition, the utility model also provides a backlight module including the above integrated light bar.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An integrated light bar includes a light bar PCB, on which a backlight source and support posts are adhesively bonded. The support post base of the support post is provided with dispensing feet, and the light bar PCB is provided with support post dispensing holes. The dispensing feet are snap-fitted into the support post dispensing holes and are adhesively bonded to the support post dispensing holes.

[0008] Preferably, the dispensing feet are provided at the four corners of the support post base, and the dispensing feet are symmetrically arranged with respect to the symmetry plane of the support post.

[0009] Preferably, the dispensing feet protrude from the support post base, and the dispensing feet include cylindrical protrusions or frustum-shaped protrusions.

[0010] Preferably, the support posts are provided at the midpoints between two adjacent backlight sources.

[0011] Preferably, the width of the support post base is the same as the width of the light bar PCB, so that the light bar PCB can stably support the support posts.

[0012] Preferably, the height of the dispensing feet is the same as the height of the backlight source dispensing feet of the backlight source, to facilitate the dispensing operation of the light bar PCB by a dispenser.

[0013] A backlight module includes a backplane and a light bar bonded to the back surface of the backplane, and the light bar is the integrated light bar described in any one of the above.

[0014] Preferably, the light bar is arranged parallel to the length direction of the backplane, and the light bars are evenly arranged along the width direction of the backplane.

[0015] Preferably, a plurality of light bar dispensing feet are evenly arranged along the length direction of the light bar, and the backplane is provided with light bar dispensing holes for installing the light bar dispensing feet.

[0016] For the integrated light bar provided by the present invention, the support posts are dispensed and bonded to the light bar PCB. During production, the support posts and the backlight source can be dispensed and bonded to the light bar PCB together to form an integrated light bar, avoiding the manual operation process of attaching the support posts to the backplane of the backlight module, and improving the production efficiency and the production capacity of the backlight module.

[0017] In addition, the present invention also provides a backlight module including the above integrated light bar. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0019] Figure 1 It is a schematic structural diagram of a backlight module in the prior art;

[0020] Figure 2 It is a schematic structural diagram of a specific embodiment of the integrated light bar provided by the present invention;

[0021] Figure 3 It is a schematic structural diagram of a light bar PCB;

[0022] Figure 4 It is a schematic structural diagram of a support post;

[0023] Figure 5 It is a schematic structural diagram of a specific embodiment of the backlight module provided by the present invention.

[0024] Figures 1 - 5 Among them:

[0025] 10 - light bar; 1 - light bar PCB; 11 - backlight source; 111 - backlight source dispensing hole; 12 - support post dispensing hole; 20 - support post; 21 - support post body; 22 - support post base; 23 - dispensing foot; 30 - backplane. Detailed implementation mode

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the protection scope of the present invention.

[0027] The core of the present invention is to provide an integrated light bar, and the support column is adhesively bonded to the light bar PCB, avoiding the process of manually attaching the support column of the backlight module, and improving the production efficiency and production capacity of the backlight module.

[0028] In addition, the present invention also provides a backlight module including the above integrated light bar.

[0029] The integrated light bar provided by the present invention includes a light bar PCB 1, a backlight source 11 and a support column 20 are adhesively provided on the light bar PCB 1. A dispensing foot 23 is provided on the support column base 22 of the support column 20. The light bar PCB 1 is provided with a support column dispensing hole 12. The dispensing foot 23 is snap-fitted in the support column dispensing hole 12, and the dispensing foot 23 is adhesively bonded to the support column dispensing hole 12.

[0030] The backlight sources 11 are usually uniformly arranged along the extending direction of the light bar PCB 1. The backlight sources 11 mainly include electroluminescent sheets EL, cold cathode fluorescent tubes CCFL, light-emitting diodes LED, etc. Their specific types, models, and spacings are determined according to experiments such as the designed light-emitting effect of the backlight module in actual production, and will not be elaborated here.

[0031] The lenses of the backlight sources 11 mostly adopt PMMA materials, so the backlight sources 11 are adhesively bonded to the light bar PCB 1 by dispensing.

[0032] Please refer to Figure 4 , the support column 20 includes a support column main body 21 and a support column base 22 at the bottom. The support column main body 21 is conical to reduce the influence of the light spot of the support column 20 on the light irradiation effect of the backlight source 11. The dimensions such as the length and taper of the support column main body 21 are determined according to the support column 20 in the prior art as required in actual production, and will not be elaborated here;

[0033] The support column base 22 is vertically provided at the large end of the support column main body 21, and it is used for adhesively connecting with the light bar PCB 1. In order to increase the contact area between the two and improve the bonding stability, a dispensing foot 23 is provided on the bottom surface of the support column base 22, and a support column dispensing hole 12 that is snap-fitted with the dispensing foot 23 is provided on the light strip PCB 1.

[0034] To facilitate the alignment of the support post 20 and the light strip PCB 1, the dispensing foot 23 is usually set as a rotary body structure to avoid the need to adjust the orientation of the dispensing foot 23 relative to the dispensing hole 12 of the support post during bonding; preferably, the dispensing foot 23 can be set to protrude from the support post base 22, and the dispensing foot 23 includes a cylindrical protrusion or a frustum-shaped protrusion, as Figure 4 shown.

[0035] The height of the dispensing foot 23 needs to be less than the thickness of the light strip PCB 1. To facilitate the dispensing operation of the light strip PCB 1 by the dispenser, preferably, the height of the dispensing foot 23 can be set to be the same as the height of the backlight dispensing foot of the backlight 11. Therefore, the depth of the backlight dispensing hole 111 on the light strip PCB 1 is the same as the depth of the support post dispensing hole 12, and the dispenser can complete the injection of all dispensing holes on the light strip PCB 1 without adjusting the dispensing height.

[0036] The distance between the support post 20 and the backlight 11 may affect the light-emitting effect of the backlight 11. Preferably, to reduce the influence of the support post 20 on the backlight 11, the support post 20 can be set at the midpoint between two adjacent backlights 11, as Figure 2 shown.

[0037] Therefore, it is possible to avoid the distance between the support post 20 and a certain backlight 11 on both sides being too close, thereby generating a large light spot and affecting the light-emitting effect of the backlight 11.

[0038] In this embodiment, the support post 20 is bonded to the light strip PCB 1 by dispensing. During production, the support post 20 and the backlight 11 can be bonded to the light strip PCB 1 by dispensing together to form an integrated light strip, avoiding the manual operation of attaching the support post 20 to the backplane 30 of the backlight module, and improving the production efficiency and the production capacity of the backlight module.

[0039] The number and distribution of the dispensing feet 23 will affect the connection stability between the support post 20 and the light strip PCB 1. Preferably, the dispensing feet 23 can be provided at the four corners of the support post base 22, and the dispensing feet 23 are symmetrically arranged with respect to the symmetry plane of the support post 20.

[0040] Please refer to Figure 2 . The distribution of the dispensing feet 23 is similar to the distribution of the backlight dispensing feet. Compared with single-point dispensing, the four-point dispensing connection method not only increases the bonding connection area but also reduces the distance between the bonding area and the outer edge of the contact surface. Therefore, the connection stability and reliability are stronger.

[0041] In addition, keeping the distribution of the dispensing feet 23 similar to the distribution of the backlight dispensing feet is also beneficial to the dispensing operation of the dispenser, without the need to change the preset movement path of the dispenser's dispensing head between the dispensing operation of the backlight dispensing hole 111 and the dispensing operation of the support post dispensing hole 12, which is more conducive to saving dispensing time.

[0042] Of course, the size of the dispensing foot 23 can be the same as or different from that of the backlight dispensing foot. The two can be determined according to the actual production requirements, such as the sizes of the backlight 11 and the support post 20.

[0043] When the size of the dispensing foot 23 or the backlight dispensing foot is large, the size of the corresponding support post dispensing hole 12 or the backlight dispensing hole 111 is large. In order to make the glue cover its bottom surface, the dispensing head needs to stay above it for a longer time.

[0044] Conversely, when the size of the dispensing foot 23 or the backlight dispensing foot is small, the size of the corresponding support post dispensing hole 12 or the backlight dispensing hole 111 is small. Therefore, the dispensing head only needs to stay above it for a shorter time to make the glue cover its bottom surface.

[0045] The contact area between the support post base 22 and the strip LED 1 will also affect the connection stability between the two. Preferably, the width of the support post base 22 can be set to be the same as the width of the strip PCB 1 so that the strip PCB 1 can stably support the support post 20.

[0046] Please refer to Figure 2 , setting the width of the support post base 22 to be the same as the width of the strip PCB 1 avoids the support post base 22 from hanging out of the upper and lower ends of the strip PCB 1. The strip PCB 1 can stably support the support post base 22, and on the premise that the width of the strip PCB 1 is certain, the contact length between the two in the width direction of the strip PCB 1 is maximized.

[0047] In addition, the equal-width design is also beneficial to the picking and placing of the support post 20, and further facilitates bonding the support post 20 to the surface of the strip PCB 1.

[0048] In addition to the above integrated strip, the present utility model also provides a backlight module including the integrated strip disclosed in the above embodiment. The backlight module includes a back plate 30 and a strip 10 bonded to the back surface of the back plate 30, and the strip 10 is the integrated strip disclosed in the above embodiment.

[0049] Please refer to Figure 5 , the strip 10 is arranged parallel to the length direction of the back plate 30, and the strip 10 is uniformly arranged along the width direction of the back plate 30. The specific number and spacing of the strip 10 are determined with reference to the prior art according to actual production requirements and will not be elaborated here.

[0050] In order to stably bond the strip 10, a plurality of strip dispensing feet are uniformly arranged along the length direction of the strip 10. The back plate 30 is provided with strip dispensing holes for installing the strip dispensing feet. The strip dispensing feet are clamped in the strip dispensing holes, and the outer surface of the strip dispensing feet is bonded to the inner surface of the strip dispensing holes.

[0051] The specific number, structure, and distribution of the glue - dispensing feet and glue - dispensing holes of the light - bar can be determined by referring to the existing backlight module.

[0052] Regarding the distribution of the support posts 20 on the backplane 30 of the backlight module, it can be symmetrically arranged with respect to the symmetry plane of the backplane 30 as shown, or an asymmetric arrangement can be adopted. For example, for the light - bar 10 in the second row, the support posts 20 are only provided on the left side, and for the light - bar 10 in the third row, the support posts 20 are only provided on the right side. Figure 5 shown, or it can be asymmetrically arranged. For example, for the light - bar 10 in the second row, the support posts 20 are only provided on the left side, and for the light - bar 10 in the third row, the support posts 20 are only provided on the right side.

[0053] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other.

[0054] The above has introduced the backlight module and its integrated light - bar provided by the present utility model in detail. Specific examples are used herein to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and modifications can be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. An integrated light bar, characterized in that: The light bar PCB (1) comprises a backlight source (11) and a support column (20) bonded thereto, a support column base (22) of the support column (20) being provided with a glue-dispensing foot (23), the light bar PCB (1) being provided with a support column glue-dispensing hole (12), the glue-dispensing foot (23) being snap-fitted into the support column glue-dispensing hole (12), and the glue-dispensing foot (23) being bonded to the support column glue-dispensing hole (12).

2. The integrated light bar according to claim 1, characterized in that: The glue dispensing feet (23) are provided at the four corners of the support column base (22), and the glue dispensing feet (23) are symmetrically arranged with respect to the symmetric plane of the support column (20).

3. The integrated light bar according to claim 1, characterized in that: The glue dispensing foot (23) is arranged to protrude from the support column base (22), and the glue dispensing foot (23) comprises a cylindrical protrusion or a truncated cone-shaped protrusion.

4. The integrated light strip according to any one of claims 1 to 3, characterized in that: The support column (20) is arranged at the midpoint of two adjacent backlight sources (11).

5. The integrated light bar according to claim 4, characterized in that: The width of the support column base (22) is the same as the width of the light bar PCB (1), so that the light bar PCB (1) can stably support the support column (20).

6. The integrated light bar according to claim 4, characterized in that: The height of the glue dispensing foot (23) is the same as the height of the backlight source glue dispensing foot of the backlight source (11), so as to facilitate the glue dispensing operation of the glue dispensing machine on the light bar PCB (1).

7. A backlight module, characterized in that: It comprises a back plate (30) and a light bar (10) bonded to the back side of the back plate (30), wherein the light bar (10) is the integrated light bar according to any one of claims 1 to 6.

8. The backlight module according to claim 7, characterized in that: The light bar (10) is arranged parallel to the length direction of the back plate (30), and the light bar (10) is evenly arranged along the width direction of the back plate (30).

9. The backlight module according to claim 8, characterized in that: The light bar (10) is evenly provided with a plurality of light bar glue dispensing feet along the length direction, and the back plate (30) is provided with light bar glue dispensing holes for installing the light bar glue dispensing feet.

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