CN108710239B - Backlight module - Google Patents

Abstract

The invention discloses a backlight module, comprising: glue the frame and overlap and be in glue the iron frame in the frame outside, glue the frame and include: glue the frame bottom plate, locate respectively glue a plurality of steps on the frame bottom plate four sides and locate respectively glue a plurality of first openings on the frame bottom plate four sides, the chase includes: the iron frame bottom plate, locate respectively a plurality of second openings on the iron frame bottom plate four sides and locate respectively a plurality of gears of buckling on the iron frame bottom plate four sides, the step with the second opening cooperatees, buckle the gear with first opening cooperatees. The invention adopts a sectional frame structure, is easy to be injection molded and assembled and has low cost. The segmented step avoids the problem of difficult injection molding of a long-distance narrow step, and simultaneously meets the requirement on a narrow frame; the bending gear plays a role in fixing and protecting the liquid crystal screen; the convex strip is embedded into the through hole, so that the rubber and iron are combined more firmly and prevented from being separated.

Description

Backlight module

Technical Field

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

Background

Liquid crystal panels have been widely used as display components in electronic products such as mobile phones, tablet computers, and the like. Currently, a liquid crystal display is composed of a liquid crystal display module and a backlight module. In order to make the backlight module have a compact structure, narrow frame and easy assembly, a structure of integrally molding a rubber frame and an iron frame of the backlight module or a structure of a borderless iron frame is usually adopted. However, the integrated molding structure is easy to separate the rubber frame from the iron frame due to the small combination area of the iron frame and the rubber frame, and the integrated molding structure is high in cost; the borderless bezel structure has low reliability due to lack of protection of the liquid crystal display. Meanwhile, for the process reason of the plastic frame injection mold, a narrow plastic body cannot be molded for a long distance, and the length of the backlight module cannot be shortened due to the structural requirement of the whole machine, so that the molding is difficult.

Accordingly, the prior art is deficient and needs improvement.

Disclosure of Invention

The present invention is directed to overcome the disadvantages of the prior art and to provide a backlight module.

The technical scheme of the invention is as follows: provided is a backlight module, including: glue the frame and overlap and be in glue the iron frame in the frame outside, glue the frame and include: glue the frame bottom plate, locate respectively glue a plurality of steps on the frame bottom plate four sides and locate respectively glue a plurality of first openings on the frame bottom plate four sides, the chase includes: the iron frame bottom plate, locate respectively a plurality of second openings on the iron frame bottom plate four sides and locate respectively a plurality of gears of buckling on the iron frame bottom plate four sides, the step with the second opening cooperatees, buckle the gear with first opening cooperatees.

Each first opening is provided with a convex strip, each bending gear is provided with a through hole corresponding to the convex strip, and the convex strip is embedded into the through hole.

The upper part of the bending gear is concave to form a concave part, and the concave part is positioned above the through hole.

The upper part of the bending gear is concave to form a concave part.

The step is spaced apart from the first opening.

The height sum of the rubber frame bottom plate and the step is equal to the height of the bending gear.

The step is rectangular, the short edge of the step is perpendicular to the side edge of the rubber frame bottom plate, one part of the step is positioned above the surface of the rubber frame bottom plate, and the other part of the step is positioned outside the surface of the rubber frame bottom plate.

The bending gear and the second opening are arranged at intervals, and the bending gear is formed by upwards extending and bending the iron frame bottom plate.

The bending gear and the iron frame bottom plate form a certain angle, and the certain angle is 87-90 degrees.

The certain angle is 89 °.

By adopting the scheme, the backlight module adopts a sectional type frame structure, and has the advantages of simple structure, easiness in molding and assembling and lower cost. A section of short step is formed on the rubber frame bottom plate, so that the problem of difficult injection molding of a long-distance narrow step is avoided, and the requirement on a narrow frame is met; the iron frame is folded to form a bending gear at the corresponding part without the step of the rubber frame, so that the gear for protecting the liquid crystal screen is formed, and compared with the iron frame without the step, the design strength is higher, and the reliability is higher; the step cooperatees with the second opening, and first opening cooperatees with the gear of buckling, has in the sand grip embedding through-hole again, makes more firm that gluey frame and chase combine, prevents to break away from, has improved backlight unit's intensity.

Drawings

FIG. 1 is a front view of a backlight module according to the present invention;

FIG. 2 is a side view of the backlight module of the present invention;

FIG. 3 is a front view of a rubber frame of the backlight module of the present invention;

FIG. 4 is a side view of a rubber frame of the backlight module of the present invention;

FIG. 5 is a detailed view of the upper step of the rubber frame in the backlight module of the present invention;

FIG. 6 is a front view of an iron frame of the backlight module of the present invention;

FIG. 7 is a side view of an iron frame of the backlight module according to the present invention;

fig. 8 is an enlarged view of the invention at a in fig. 6.

Detailed Description

The invention is described in detail below with reference to the figures and the specific embodiments.

Referring to fig. 1 and 2, the present invention provides a backlight module, including:glue frame 1 andchase 2,glue frame 1 andinlay chase 2 inboard, adoptglue frame 1 withchase 2 cooperation frame can improve the reliability and the intensity of module as backlight unit's bearing structure, can also satisfy the requirement to narrow frame better.

Referring to fig. 3 to 5, therubber frame 1 includes: the rubberframe bottom plate 11, thesteps 12 respectively arranged on four sides of the rubberframe bottom plate 11, and thefirst openings 13 respectively arranged on four sides of the rubberframe bottom plate 11.Step 12 with first opening 13 interval sets up, and in this kind of sectionaltype structure step 12 is one section short distance step, and is easier when injection moulding, has avoided the difficult problem of long distance narrow limit step when moulding plastics. Thestep 12 is rectangular, the short side of thestep 12 is perpendicular to the side of the rubberframe bottom plate 11, one part of thestep 12 is positioned above the surface of the rubberframe bottom plate 11, and the other part of thestep 12 is positioned outside the surface of the rubberframe bottom plate 11, and thestep 12 can play a role in fixing the liquid crystal screen and can play a role in protection.

Referring to fig. 6 to 8, theiron frame 2 includes: the ironframe bottom plate 21, locate respectively a plurality ofsecond openings 22 on the ironframe bottom plate 21 four sides, locate respectively a plurality ofgear 23 of buckling on the ironframe bottom plate 21 four sides. Bendinggear 23 andsecond opening 22 are arranged at intervals, bendinggear 23 is formed by upwards extending and bending ironframe bottom plate 21, and bendinggear 23 can play a role in fixing and protecting the liquid crystal screen. Thebending gear 23 and the ironframe bottom plate 21 form a certain angle, and the certain angle is 87-90 degrees. Thegear 23 of buckling inwards inclines certain angle a little, can glue more firmly of frame card in a poor light, is difficult for breaking away from, specifically,buckle gear 23 with ironframe bottom plate 21 becomes angle 89, and the effect is more excellent this moment, can play with glue the fixed effect of frame.

Further, therubber frame 1 further comprises aprotruding strip 14 arranged on eachfirst opening 13, and correspondingly, theiron frame 2 further comprises a throughhole 24 arranged on eachbending position 23 and corresponding to theprotruding strip 14, theprotruding strip 14 is embedded into the throughhole 24, therubber frame 1 is fixed on theiron frame 2 by clamping theprotruding strip 14 in the throughhole 24, and therubber frame 1 and theiron frame 2 are combined more firmly. Preferably, theprotruding strip 14 is provided on an end surface of thefirst opening 13.

Alternatively, the upper portion of thebending position 23 is recessed to form arecess 25, and in this embodiment, therecess 25 is located above the throughhole 24. Theconcave portion 25 is concave toward the inner side of thebending position 23, referring to fig. 2, theconcave portion 25 is matched with theprotruding strip 14, so that theprotruding strip 14 is not easy to be separated, and the combination of therubber frame 1 and theiron frame 2 is more stable.

Referring to fig. 2, after therubber frame 1 and theiron frame 2 are assembled, thestep 12 is matched with thesecond opening 22, thebending position 23 is matched with thefirst opening 13, theprotruding strip 14 is matched with the throughhole 24, and the sum of the heights of the rubberframe bottom plate 11 and thestep 12 is equal to the height of thebending position 23. The structure of this kind of sectional type is satisfying under the condition of narrow frame demand, makes more firm that the sizing iron combines, and intensity is higher, and is better to the fixed guard action of LCD screen.

In conclusion, the backlight module adopts a sectional type frame structure, has a simple structure, is easy to form and assemble by injection molding of the rubber frame, and has lower cost. A section of short step is formed on the rubber frame bottom plate, so that the problem of difficult injection molding of a long-distance narrow step is avoided, and the requirement on a narrow frame is met; the iron frame is folded to form a bending gear at the corresponding part without the step of the rubber frame, so that the gear for protecting the liquid crystal screen is formed, and compared with the iron frame without the step, the design strength is higher, and the reliability is higher; the step cooperatees with the second opening, and first opening cooperatees with the gear of buckling, has in the sand grip embedding through-hole again, makes more firm that gluey frame and chase combine, prevents to break away from, has improved backlight unit's intensity.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (4)

1. A backlight module, comprising: glue the frame and overlap and be in glue the iron frame in the frame outside, glue the frame and include: glue the frame bottom plate, locate respectively glue a plurality of steps on the frame bottom plate four sides and locate respectively glue a plurality of first openings on the frame bottom plate four sides, the chase includes: the iron frame bottom plate, the second openings and the bending gears are arranged on the four side edges of the iron frame bottom plate respectively, the steps are matched with the second openings, and the bending gears are matched with the first openings; the bending gear is formed by upwards extending and bending the iron frame bottom plate; the short edge of the step is vertical to the side edge of the rubber frame bottom plate, one part of the step is positioned above the surface of the rubber frame bottom plate, and the other part of the step is positioned outside the surface of the rubber frame bottom plate; the height sum of the rubber frame bottom plate and the step is equal to the height of the bending gear;

each first opening is provided with a convex strip, each bending gear is provided with a through hole corresponding to the convex strip, the convex strip is embedded into the through hole, the upper part of each bending gear is concave to form a concave part, and the concave part is positioned above the through hole.

2. A backlight module according to claim 1, wherein the step is spaced from the first opening.

3. The backlight module as claimed in claim 1, wherein the bending step is at an angle of 87 ° -90 ° with respect to the bezel substrate.

4. A backlight module according to claim 3, wherein the certain angle is 89 °.

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