CN215006177U - Backlight module for improving flatness of back surface of module - Google Patents

Abstract

The utility model provides an improve backlight unit of module back flatness, including the underframe, the underframe includes the bottom plate, side frame and a plurality of locking part, side frame fixed connection is on the bottom plate, form the holding chamber between bottom plate and the side frame, the bottom plate includes relative first surface and second surface, be equipped with a plurality of convex first convex closure outside towards the holding chamber on the bottom plate, first convex closure is sunken by the first surface and the second surface is protruding towards the holding chamber forms, be equipped with the first mounting hole that runs through first surface and second surface on each first convex closure, each locking part passes each first mounting hole and is fixed in first convex closure, each locking part includes the lock solid terminal surface, the protruding height of each first convex closure is used for compensating the mounting height of each locking part, and make the lock solid terminal surface of each locking part be in the coplanar. In view of this, the utility model discloses a backlight unit can improve the plane degree that the face was paid to the module lock, improves the uneven problem of module atress in the complete machine equipment, improves product quality.

Description

Backlight module for improving flatness of back surface of module

Technical Field

The utility model relates to a display screen technical field, in particular to improve backlight unit of module back plane degree.

Background

At present, the multi-screen development of automobile display screens brings new opportunities for the development of panel enterprises, panel manufacturers gradually adjust strategies to seize the subdivided market of automobile display in succession, the market potential of automobile terminals in China is huge, the development prospect is wide, the market demand of the automobile display is directly driven, the screen enlargement trend of the automobile display screens is more and more obvious, the display effect requirements of the corresponding liquid crystal display screens are higher and higher, the corresponding manufacturing difficulty is increased, and the screen size requirements are higher and higher, and the warpage control of the corresponding products is more and more difficult.

In the process of assembling and locking the whole liquid crystal display module, the backlight module of the liquid crystal display module is provided with a screw column structure, the screw column is riveted to the lower iron frame, and the flatness of the locking surface of the screw column can change along with the warping degree of the lower iron frame of the backlight module, so that the backlight module is stressed unevenly due to the uneven flatness of the locking surface of the screw column during assembling, and the liquid crystal display module is extruded.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model discloses a backlight unit can improve the plane degree that the face was paid to the module lock, improves the uneven problem of module atress in the complete machine equipment, improves product quality.

The utility model provides an improve backlight unit of module back flatness, including the underframe, the underframe includes the bottom plate, side frame and a plurality of locking part, side frame fixed connection is on the bottom plate, form the holding chamber between bottom plate and the side frame, the bottom plate includes relative first surface and second surface, be equipped with a plurality of convex first convex closure outside towards the holding chamber on the bottom plate, first convex closure is sunken by the first surface and the second surface is protruding towards the holding chamber forms, be equipped with the first mounting hole that runs through first surface and second surface on each first convex closure, each locking part passes each first mounting hole and is fixed in first convex closure, each locking part includes the lock solid terminal surface, the protruding height of each first convex closure is used for compensating the mounting height of each locking part, and make the lock solid terminal surface of each locking part be in the coplanar.

The utility model discloses in, above-mentioned bottom plate includes middle zone and marginal zone along length direction, and middle zone's first convex closure height is less than marginal zone's first convex closure height.

The utility model discloses in, above-mentioned bottom plate includes first long limit, the long limit of second, first minor face and second minor face, and parallel and relative setting in first long limit and the long limit of second, first minor face and the parallel and relative setting of second minor face, first minor face, second minor face are connected perpendicularly between first long limit and the long limit of second, and the bottom plate is close to first long limit and the long limit of second and all is equipped with a plurality of first convex hulls.

The utility model discloses in, above-mentioned bottom plate is close to first long limit and is equipped with four first convex hulls, and wherein two first convex hulls are located marginal zone, and two other first convex hulls are located middle zone, and the bottom plate is close to the long limit of second and is equipped with two first convex hulls, and two first convex hulls are located middle zone.

The utility model discloses in, above-mentioned locking part is the screw post, and the screw post cooperates the riveting on first convex bag with first mounting hole.

The utility model discloses in, be equipped with a plurality of protruding second convex hulls towards the holding intracavity on the above-mentioned bottom plate, the second convex hull is by the sunken and second surface of first surface towards the protruding formation of holding intracavity, be equipped with the second mounting hole that runs through first surface and second surface on each second convex hull, the underframe still includes a plurality of setting elements that are used for connecting on-vehicle well accuse board, each setting element passes each second mounting hole and is fixed in the second convex hull, each setting element includes the location terminal surface, the bulge height of each second convex hull is used for compensating the mounting height of each setting element, and make the location terminal surface of each setting element be in the coplanar.

The utility model discloses in, above-mentioned setting element is the screw, and the screw cooperates the riveting on the second convex bag with the second mounting hole.

The utility model discloses in, be equipped with a plurality of third convex hulls towards the holding intracavity is bellied on the above-mentioned bottom plate, the third convex hull is by the sunken and second surface of first surface towards the protruding formation of holding intracavity, be equipped with the third mounting hole that runs through first surface and second surface on each third convex hull, the underframe still includes a plurality of screws that are used for connecting circuit board, each screw passes each third mounting hole and is fixed in the third convex hull, each screw includes the mounting surface, the mounting height that the arch height of each third convex hull is used for compensating each screw, and make the mounting surface of each screw be in the coplanar.

The utility model discloses in, above-mentioned first bellied height is 0.1mm ~ 1 mm.

The utility model discloses in, above-mentioned backlight unit who improves module back plane degree still includes center, reflectance coating, light guide plate and optics diaphragm, center and underframe fixed connection, and the holding intracavity is located to the reflectance coating, and on the reflectance coating was located to the light guide plate, optics diaphragm was located on the light guide plate.

The utility model discloses a backlight unit's first convex closure can adjust the mounting height of locking part, and the compensation is paid face plane degree difference problem because of the locking part lock that backlight unit's warpage leads to, improves the uneven problem of atress that backlight unit caused when the equipment, improves the quality of product.

Drawings

Fig. 1 is a schematic bottom view of the bottom frame of the present invention.

Fig. 2 is a schematic sectional view of the bottom frame of the present invention.

Fig. 3 is an enlarged structural view at the first convex hull of fig. 2.

Fig. 4 is a schematic view of the split structure of the backlight module of the present invention for improving the flatness of the back surface of the module.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In order to facilitate understanding of those skilled in the art, the present application provides a specific implementation process of the technical solution provided by the present application through the following embodiments.

Fig. 1 is a schematic bottom view of a bottom frame of the present invention, fig. 2 is a schematic sectional view of the bottom frame of the present invention, fig. 3 is an enlarged schematic view of a first convex hull of fig. 2, fig. 4 is a schematic split structural view of a backlight module according to the present invention for improving the flatness of the back surface of the module, as shown in fig. 1, fig. 2, fig. 3 and fig. 4, the backlight module for improving the flatness of the back surface of the module comprises a bottom frame 10, the bottom frame 10 comprises a bottom plate 11, a side frame 12 and a plurality of locking members 21, the side frame 12 is fixedly connected to the bottom plate 11, a receiving cavity 101 is formed between the bottom plate 11 and the side frame 12, the bottom plate 11 comprises a first surface 111 and a second surface 112 opposite to each other, a plurality of first convex hulls 113 protruding toward the receiving cavity 101 are disposed on the bottom plate 11, the first convex hulls 113 are recessed from the first surface 111 and protruding toward the receiving cavity 101, and first mounting holes penetrating through the first surface 111 and the second surface 112 are disposed on the first convex hulls 113, each locking member 21 is fixed to the first convex hull 113 through each first mounting hole, each locking member 21 includes a locking end surface 211, and the protrusion height of each first convex hull 113 is used to compensate the mounting height of each locking member 21, so that the locking end surfaces 211 of each locking member 21 are in the same plane. In this embodiment, the bottom frame 11 is an integrally formed structure.

The utility model discloses a backlight unit's first convex closure 113 can adjust the mounting height of locking part 21, and the compensation is paid face plane degree difference problem because of the locking part 21 lock that backlight unit's warpage leads to, improves the uneven problem of atress that backlight unit caused when the equipment, improves the quality of product.

As shown in fig. 1 and 2, the bottom plate 11 includes a middle region 201 and an edge region 202 along the length direction, and the height of the first convex hull 113 of the middle region 201 is smaller than that of the first convex hull 113 of the edge region 202.

Further, the bottom plate 11 includes a first long side 11a, a second long side 11b, a first short side 11c and a second short side 11d, the first long side 11a and the second long side 11b are parallel and opposite to each other, the first short side 11c and the second short side 11d are vertically connected between the first long side 11a and the second long side 11b, and the bottom plate 11 is provided with a plurality of first convex hulls 113 near the first long side 11a and the second long side 11 b.

Further, the bottom plate 11 is provided with four first convex hulls 113 near the first long side 11a, two first convex hulls 113 are located in the edge area 202, the other two first convex hulls 113 are located in the middle area 201, the bottom plate 11 is provided with two first convex hulls 113 near the second long side 11b, and the two first convex hulls 113 are located in the middle area 201.

As shown in fig. 2 and 3, the locking member 21 is a screw post, and the screw post is riveted on the first convex hull 113 in cooperation with the first mounting hole.

Furthermore, a plurality of second convex hulls 114 protruding towards the inside of the accommodating cavity 101 are arranged on the bottom plate 11, the second convex hulls 114 are formed by recessing the first surface 111 and protruding the second surface 112 towards the inside of the accommodating cavity 101, each second convex hull 114 is provided with a second mounting hole penetrating through the first surface 111 and the second surface 112, the bottom frame 10 further comprises a plurality of positioning elements 22 used for connecting the vehicle-mounted central control panel, each positioning element 22 penetrates through each second mounting hole and is fixed on the second convex hull 114, each positioning element 22 comprises a positioning end surface 221, the protruding height of each second convex hull 114 is used for compensating the mounting height of each positioning element 22, and the positioning end surfaces 221 of each positioning element 22 are located in the same plane.

Further, the positioning element 22 is a screw, and the screw is riveted on the second convex hull 114 by matching with the second mounting hole.

Furthermore, a plurality of third convex hulls 115 protruding towards the accommodating cavity 101 are arranged on the bottom plate 11, the third convex hulls 115 are formed by the first surface 111 being sunken and the second surface 112 protruding towards the accommodating cavity 101, each third convex hull 115 is provided with a third mounting hole penetrating through the first surface 111 and the second surface 112, the bottom frame 10 further comprises a plurality of screws 23 used for connecting a circuit board, each screw 23 penetrates through each third mounting hole and is fixed on the third convex hull 115, each screw 23 comprises a mounting end surface 231, the protruding height of each third convex hull 115 is used for compensating the mounting height of each screw 23, and the mounting end surfaces 231 of each screw 23 are in the same plane. In the present embodiment, "screw column" and "screw 23" are named only for distinguishing different purposes, and the screw 23 and the screw column are actually the same kind of parts with different heights.

As shown in fig. 3, the height of the first protrusions is 0.1mm to 1 mm. Preferably, the height of the first protrusion is, for example, 0.1mm, 0.3mm, 0.5mm, 0.7mm, 0.9mm, 1.0mm, or the like, but is not limited thereto.

As shown in fig. 4, the backlight module for improving the flatness of the back surface of the module further includes a middle frame 24, a reflective film 25, a light guide plate 26 and an optical film 27, wherein the middle frame 24 is fixedly connected to the bottom frame 10, the reflective film 25 is disposed in the accommodating cavity 101, the light guide plate 26 is disposed on the reflective film 25, and the optical film 27 is disposed on the light guide plate 26. In this embodiment, center 24 is arranged around underframe 10 circumference, be equipped with the fixture block on underframe 10, be equipped with on center 24 with fixture block complex card hole, the fixture block is installed in card hole fixed connection underframe 10 and center 24, reflectance coating 25 sets up on bottom plate 11, light guide plate 26 passes through the double faced adhesive tape to be fixed on reflectance coating 25, optics diaphragm 27 includes diffusion barrier 271, membrane 272 and brightness enhancement film 273, diffusion barrier 271 passes through the double faced adhesive tape to be fixed on light guide plate 26, membrane 272 passes through the double faced adhesive tape to be fixed on diffusion barrier 271, brightness enhancement film 273 passes through the double faced adhesive tape to be fixed on membrane 272.

Further, the backlight module for improving the flatness of the back surface of the module further comprises a light bar 28, and the light bar 28 is fixed on the side frame 12 through a heat-conducting double-sided adhesive tape.

Further, improve backlight unit of module back flatness still includes bubble celloidin 29, and bubble celloidin 29 is attached on center 24, and bubble celloidin 29 is used for buffering fixed display screen.

The utility model discloses an improve backlight unit of module back plane degree is applied to automobile display screen, on-vehicle well accuse, on-vehicle instrument demonstration or on-vehicle streaming media rear-view mirror demonstration etc. but not use this as the limit.

The utility model discloses not be limited to the specific details among the above-mentioned embodiment the utility model discloses a within the technical idea scope, can be right the technical scheme of the utility model carry out multiple simple variant, these simple variants all belong to the utility model discloses a protection scope. The various features described in the foregoing detailed description may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.

Claims (10)

1. A backlight module for improving the flatness of the back surface of the module is characterized by comprising a bottom frame, wherein the bottom frame comprises a bottom plate, a side frame and a plurality of locking pieces, the side frame is fixedly connected to the bottom plate, an accommodating cavity is formed between the bottom plate and the side frame, the bottom plate comprises a first surface and a second surface which are opposite, a plurality of first convex hulls which protrude towards the outside of the accommodating cavity are arranged on the bottom plate, the first convex hulls are formed by recessing the first surface and protruding the second surface towards the outside of the accommodating cavity, first mounting holes which penetrate through the first surface and the second surface are arranged on each first convex hull, each locking piece penetrates through each first mounting hole and is fixed on the first convex hull, each locking piece comprises a locking end surface, and the protruding height of each first convex hull is used for compensating the mounting height of each locking piece, and the locking end surfaces of the locking pieces are positioned in the same plane.

2. The backlight module of claim 1, wherein the bottom plate comprises a middle region and an edge region along a length direction, and the first convex hull height of the middle region is less than the first convex hull height of the edge region.

3. The backlight module of claim 2, wherein the bottom plate comprises a first long side, a second long side, a first short side and a second short side, the first long side is parallel to and opposite to the second long side, the first short side is parallel to and opposite to the second short side, the first short side and the second short side are vertically connected between the first long side and the second long side, and a plurality of first convex hulls are disposed on the bottom plate near the first long side and the second long side.

4. The backlight module according to claim 3, wherein the bottom plate has four first convex hulls near the first long edge, two of the first convex hulls are located in the edge region, the other two of the first convex hulls are located in the middle region, the bottom plate has two of the first convex hulls near the second long edge, and the two first convex hulls are located in the middle region.

5. The backlight module according to any one of claims 1 to 4, wherein the locking member is a screw, and the screw is engaged with the first mounting hole and riveted on the first convex bag.

6. The backlight module as claimed in claim 1, wherein the bottom plate has a plurality of second convex hulls protruding toward the receiving cavity, the second convex hulls are formed by recessing the first surface and protruding the second surface toward the receiving cavity, each second convex hull has a second mounting hole penetrating the first surface and the second surface, the bottom frame further includes a plurality of positioning members for connecting to a vehicle-mounted center control board, each positioning member passes through each second mounting hole and is fixed to the second convex hull, each positioning member includes a positioning end surface, and the protruding height of each second convex hull is used to compensate the mounting height of each positioning member, so that the positioning end surfaces of each positioning member are in the same plane.

7. The backlight module of claim 6, wherein the positioning element is a screw, and the screw is engaged with the second mounting hole and riveted on the second convex bag.

8. The backlight module as claimed in claim 1, wherein the bottom plate has a plurality of third protrusions protruding into the receiving cavity, the third protrusions are formed by the first surface being recessed and the second surface being protruding into the receiving cavity, each third protrusion has a third mounting hole penetrating through the first surface and the second surface, the bottom frame further has a plurality of screws for connecting to the circuit board, each screw passes through each third mounting hole and is fixed to the third protrusion, each screw has a mounting end surface, and the protruding height of each third protrusion is used to compensate the mounting height of each screw, so that the mounting end surfaces of the screws are in the same plane.

9. The backlight module for improving the flatness of the back surface of the module as claimed in claim 1, wherein the height of the first protrusions is 0.1mm to 1 mm.

10. The backlight module of claim 1, wherein the backlight module further comprises a middle frame, a reflective film, a light guide plate, and an optical film, the middle frame is fixedly connected to the bottom frame, the reflective film is disposed in the cavity, the light guide plate is disposed on the reflective film, and the optical film is disposed on the light guide plate.

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