CN210401957U - Backlight module and display device - Google Patents
Backlight module and display device Download PDFInfo
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- CN210401957U CN210401957U CN201921360963.7U CN201921360963U CN210401957U CN 210401957 U CN210401957 U CN 210401957U CN 201921360963 U CN201921360963 U CN 201921360963U CN 210401957 U CN210401957 U CN 210401957U
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Abstract
The utility model provides a backlight module and display device belongs to and shows technical field, and it can solve at least part and does not have reliable fixed problem at the backplate for optical layer structure among the current backlight module. The utility model discloses a backlight module, include: an optical layer structure for directing light out; the optical layer structure is provided with a light emergent area for light ray to be emitted and an installation area positioned on the periphery of the light emergent area, and the optical layer structure comprises a first installation through hole positioned in the installation area; the back plate is used for bearing the optical layer structure and comprises a second mounting through hole corresponding to the first mounting through hole; and the connecting piece is at least partially arranged in the first mounting through hole and the second mounting through hole in a penetrating manner, so that the optical layer structure and the back plate are relatively positioned.
Description
Technical Field
The utility model belongs to the technical field of show, concretely relates to backlight module and display device.
Background
The liquid crystal display device mainly comprises a liquid crystal panel and a backlight module, and the display of the liquid crystal display device is finally realized through the combined action of the liquid crystal panel and the backlight module. The backlight module includes a plurality of optical layer structures (such as light guide plates) and a back plate for supporting the optical layer structures.
In the backlight module in the prior art, the optical layer structure is not reliably fixed on the back plate, so that the backlight module can shake in the back plate in the moving process, and the problems of optical performance reduction of the backlight module, light leakage of the backlight module, damage of a light bar of the backlight module and the like can be caused.
SUMMERY OF THE UTILITY MODEL
The utility model discloses optical layer structure does not have reliable fixed problem at the backplate in the present backlight unit of partial solution at least, provides one kind with the optical layer structure reliable fix the backlight unit at the backplate.
Solve the utility model discloses technical scheme that technical problem adopted is a backlight unit, include:
an optical layer structure for directing light out; the optical layer structure is provided with a light emergent area for light ray to be emitted out and an installation area positioned at the periphery of the light emergent area, and the optical layer structure comprises a first installation through hole positioned in the installation area;
a back plate for carrying the optical layer structure, the back plate including a second mounting through hole corresponding to the first mounting through hole;
and the connecting piece is at least partially arranged in the first mounting through hole and the second mounting through hole in a penetrating manner, so that the optical layer structure and the back plate are positioned relatively.
Further preferably, the connecting member includes: the columnar connecting part is arranged in the first mounting through hole and the second mounting through hole in a penetrating mode; the first fixing part is fixed at the first end of the columnar connecting part and is positioned on one side, away from the backboard, of the optical layer structure, and the cross section of the first fixing part is larger than that of the first mounting through hole; and the second fixing part is connected with the second end of the columnar connecting part, so that the connecting piece is fixed relative to the back plate.
It is further preferable that a portion of the columnar connecting portion located in the first mounting through hole is transition-fitted to the first mounting through hole.
It is further preferable that a boss is provided in the second mounting through hole, and the boss is provided along a circumferential direction of the second mounting through hole; the second fixing part is positioned on one side of the boss far away from the optical layer structure, and the cross-sectional area of the second fixing part is larger than that of a hole formed in the inner side face of the boss.
It is further preferable that the second fixing portion is fixedly connected to the second end of the pillar connecting portion, and the second fixing portion is formed of an elastic material.
Further preferably, the second fixing portion is screwed to the second end of the columnar connecting portion.
Further preferably, the backlight module further includes: the elastic piece is positioned in the second mounting through hole and positioned between the optical layer structure and the boss, the size of the elastic piece in an unstressed state is larger than a first size in the direction perpendicular to the optical layer structure, and the first size is the distance between the surface of the boss close to the optical layer structure and the surface of the second mounting through hole close to the optical layer structure.
Further preferably, the elastic member is a spring or a rubber block.
Further preferably, the back plate includes: the bearing part corresponds to the light emergent area of the optical layer structure; a limiting part corresponding to the mounting region of the optical layer structure; the groove part is positioned between the bearing part and the limiting part, the first surface of the groove part is far away from the optical layer structure than the first surfaces of the bearing part and the limiting part respectively, and the first surface is the surface of the back plate close to the optical layer structure.
Further preferably, the optical layer structure includes: a light guide plate; at least one optical film layer overlapping the light guide plate.
Solve the technical problem the utility model adopts as a technical scheme a display device, including foretell backlight unit.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a top view structural diagram of a backlight module according to an embodiment of the present invention;
FIG. 2 is a partial cross-sectional view A-A of FIG. 1;
fig. 3 is a partial exploded perspective view of a backlight module according to an embodiment of the present invention;
wherein the reference numerals are: 1 an optical layer structure; 11 a first mounting through hole; 2, a back plate; 21 a second mounting through hole; 211 a boss; 22 a carrier part; 23 a limiting part; 24 groove parts; 3, connecting pieces; 31 a columnar connecting portion; 32 a first fixing portion; 33 a second fixed part; 4 an elastic member.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The invention will be described in more detail below with reference to the accompanying drawings. Like elements in the various figures are denoted by like reference numerals. For purposes of clarity, the various features in the drawings are not necessarily drawn to scale. Moreover, certain well-known elements may not be shown in the figures.
Numerous specific details of the invention, such as structure, materials, dimensions, processing techniques and techniques of components, are set forth in the following description in order to provide a more thorough understanding of the invention. However, as will be understood by those skilled in the art, the present invention may be practiced without these specific details.
Example 1:
as shown in fig. 1 to 3, the present embodiment provides a backlight Module (MNT), including:
an optical layer structure 1 for directing light out; the optical layer structure 1 is provided with a light emergent area for emitting light and a mounting area positioned at the periphery of the light emergent area, and the optical layer structure 1 comprises a first mounting through hole 11 positioned in the mounting area;
a back plate 2 for carrying the optical layer structure 1, the back plate 2 comprising a second mounting through hole 21 corresponding to the first mounting through hole 11;
and the connecting piece 3 is at least partially arranged in the first mounting through hole 11 and the second mounting through hole 21 in a penetrating way, so that the optical layer structure 1 and the back plate 2 are relatively positioned.
In this case, that is to say the connection 3 defines the relative position of the optical layer structure 1 and the rear panel 2, i.e. the position which can be defined in a direction perpendicular to the optical layer structure 1 and in a direction parallel to the optical layer structure 1, by means of the first mounting through-hole 11 in the optical layer structure 1 and the second mounting through-hole 21 in the rear panel 2.
In the backlight module of this embodiment, can inject optical layer structure 1 on backplate 2 through connecting piece 3 to can avoid backlight unit at the removal in-process, avoid rocking of optical layer structure 1 in backplate 2, thereby avoid the problem such as the optical property decline of backlight unit, backlight unit's light leak and the damage of backlight unit lamp strip, and then improve backlight unit's performance and life.
Example 2:
as shown in fig. 1 to 3, the present embodiment provides a backlight module, including:
an optical layer structure 1 for directing light out; the optical layer structure 1 is provided with a light emergent area for emitting light and a mounting area positioned at the periphery of the light emergent area, and the optical layer structure 1 comprises a first mounting through hole 11 positioned in the mounting area;
a back plate 2 for carrying the optical layer structure 1, the back plate 2 comprising a second mounting through hole 21 corresponding to the first mounting through hole 11;
and the connecting piece 3 is at least partially arranged in the first mounting through hole 11 and the second mounting through hole 21 in a penetrating way, so that the optical layer structure 1 and the back plate 2 are relatively positioned.
The number of the first mounting through holes 11 may be plural, for example, if the optical layer structure 1 is rectangular, the number of the first mounting through holes 11 may be four, and the four mounting through holes are respectively disposed at four corners of the block. The corresponding second mounting through holes 21 and the connecting members 3 may be plural, and one first mounting through hole 11 corresponds to one second mounting through hole 21 and one connecting member 3.
The connection 3 defines the relative position of the optical layer structure 1 and the back plate 2, i.e. the position that can be defined in a direction perpendicular to the optical layer structure 1 and in a direction parallel to the optical layer structure 1, by means of the first mounting through hole 11 in the optical layer structure 1 and the second mounting through hole 21 in the back plate 2.
In the backlight module of this embodiment, can inject optical layer structure 1 on backplate 2 through connecting piece 3 to can avoid backlight unit at the removal in-process, avoid rocking of optical layer structure 1 in backplate 2, thereby avoid the problem such as the optical property decline of backlight unit, backlight unit's light leak and the damage of backlight unit lamp strip, and then improve backlight unit's performance and life.
Preferably, the connecting member 3 comprises:
a columnar connection portion 31 inserted through the first mounting through hole 11 and the second mounting through hole 21;
the first fixing part 32 is fixed at the first end of the columnar connecting part 31 and is positioned on one side, away from the back plate 2, of the optical layer structure 1, and the cross section of the first fixing part 32 is larger than that of the first mounting through hole 11;
and a second fixing portion 33 connected to a second end of the pillar connecting portion 31 to fix the connecting member 3 with respect to the back plate 2.
It should be noted that the optical layer structure 1 is a layered structure, and the direction of the force is described below as being perpendicular to the optical layer structure 1 or parallel to the optical layer structure 1.
In this case, the connecting element 3 is composed of three parts. Specifically, when the columnar connecting portion 31 is inserted into the first mounting through hole 11 and the second mounting through hole 21, since the cross section of the first fixing portion 32 is larger than that of the first mounting through hole 11, the first fixing portion 32 is clamped on the surface of the optical layer structure 1 away from the back plate 2, so as to apply a force to the optical layer structure 1, which is perpendicular to the optical layer structure 1(z direction) and points to the back plate 2; while the second fixation section 33 is capable of giving the backlight a force perpendicular to the optical layer structure 1 (z-direction) and directed towards the optical layer structure 1, thereby defining the position of both the optical layer structure 1 and the back plate 2 in the direction perpendicular to the optical layer structure 1.
The above structure of the connecting member 3 not only can reliably define the positions of the optical layer structure 1 and the back plate 2 in the direction perpendicular to the optical layer structure 1, but also facilitates the installation and detachment of the connecting member 3 because the first fixing portion 32 is clamped on the surface of the optical layer structure 1 far away from the back plate 2.
Preferably, the portion of the columnar connecting portion 31 located in the first mounting through hole 11 is transition-fitted to the first mounting through hole 11.
In this case, that is to say, the positions of both the optical layer structure 1 and the rear plate 2 in the direction parallel to the optical layer structure 1 (direction perpendicular to the z direction) can be reliably defined by the cooperation of the columnar connecting portions 31 with the first mounting through-holes 11.
The transition fit of at least part of the columnar connecting part 31 and the first mounting through hole 11 not only can reliably define the positions of the optical layer structure 1 and the back plate 2 in the direction parallel to the optical layer structure 1, but also can facilitate the mounting and dismounting of the connecting part 3 on the optical layer structure 1.
Preferably, the second mounting through hole 21 has a boss 211 therein, and the boss 211 is disposed along the circumferential direction of the second mounting through hole 21;
the second fixing portion 33 is located on a side of the boss 211 away from the optical layer structure 1, and a cross-sectional area of the second fixing portion 33 is larger than a cross-sectional area of a hole formed on an inner side surface of the boss 211.
Here, the boss 211 is provided to correspond to another sub-through hole provided in the second mounting through hole 21, and the cross-sectional area of the sub-through hole is smaller than that of the second mounting through hole 21. When the cross-sectional area of the second fixing portion 33 is larger than the cross-sectional area of the hole formed by the boss 211, the second fixing portion 33 is clamped on the surface of the boss 211 away from the optical layer structure 1, so as to give a force to the back plate 2 perpendicular to the optical layer structure 1(z direction) and pointing to the optical layer structure 1. The first fixing portion 32 and the second fixing portion 33 cooperate to limit the optical layer structure 1 and the back plate 2.
The above structure of the second fixing portion 33 allows the connecting member 3 to be conveniently mounted and dismounted on the backboard 2 because the second fixing portion 33 is clamped on the surface of the boss 211 away from the backboard 2.
Preferably, one condition of the second fixing portion 33 is: the second fixing portion 33 is fixedly connected to the second end of the pillar connecting portion 31, and the second fixing portion 33 is formed of an elastic material.
Here, the elastic material forming the second fixing portion 33 may be rubber, or other suitable material.
Specifically, the limiting installation process of the back plate 2 and the optical layer structure 1 is as follows: the second fixing portion 33 is deformed by pressing so as to sequentially pass through the first mounting through hole 11 and the boss 211 of the second mounting through hole 21, and then the second fixing portion 33 is restored to its original shape, so that the first fixing portion 32 is clamped on the surface of the optical layer structure 1 away from the back plate 2, and the first fixing portion 32 is clamped on the surface of the boss 211 away from the optical layer structure 1.
The elastic second fixing portion 33 enables the connecting member 3 to be easily and easily mounted or dismounted with respect to the back plate 2 and the optical layer structure 1.
Preferably, another condition of the second fixing portion 33 is: the second fixing portion 33 is screwed to a second end of the pillar connecting portion 31.
Wherein, the second fixing portion 33 is detachably connected to the second end of the pillar connecting portion 31. The limiting installation process of the back plate 2 and the optical layer structure 1 is as follows: the second end of the columnar connecting portion 31 without the second fixing portion 33 sequentially passes through the first mounting through hole 11 and the boss 211 of the second mounting through hole 21, and then the second fixing portion 33 is mounted at the second end of the columnar connecting portion 31, so that the first fixing portion 32 is clamped on the surface of the optical layer structure 1 away from the back plate 2, and the first fixing portion 32 is clamped on the surface of the boss 211 away from the optical layer structure 1.
The process of threaded connection enables the connection piece 3 to be simply and easily mounted or dismounted for limiting the back plate 2 and the optical layer structure 1.
Preferably, the backlight module further comprises:
and the elastic piece 4 is positioned in the second mounting through hole 21 and between the optical layer structure 1 and the boss 211, in a direction perpendicular to the optical layer structure 1, the size of the elastic piece 4 in an unstressed state is larger than a first size, and the first size is the distance between the surface, close to the optical layer structure 1, of the boss 211 and the surface, close to the optical layer structure 1, of the second mounting through hole 21.
Wherein, namely, when the optical layer structure 1 and the back plate 2 are assembled by the connecting member 3, the elastic member 4 is in a compressed state. The compressed elastic members 4 exert a force perpendicular to the optical layer structure 1 on the surface of the optical layer structure 1 close to the back plate 2, and the elastic members 4 have a cushioning effect on the optical layer structure 1 in the direction perpendicular to the optical layer structure 1.
The elastic part 4 has a buffering effect on the optical layer structure 1 in the direction perpendicular to the optical layer structure 1, so that the optical layer structure 1 can be prevented from being damaged by limitation between the optical layer structure 1 and the back plate 2, and the performance of the optical layer structure 1 is ensured.
Preferably, the elastic member 4 is a spring or a rubber block, or other elastic structure.
Preferably, the back sheet 2 includes:
a bearing part 22 corresponding to the light-emitting area of the optical layer structure 1;
a stopper 23 corresponding to the mounting region of the optical layer structure 1;
the groove portion 24 is located between the bearing portion 22 and the limiting portion 23, a first surface of the groove portion 24 is far away from the optical layer structure 1 than first surfaces of the bearing portion 22 and the limiting portion 23, and the first surface is a surface of the back plate 2 close to the optical layer structure 1.
Wherein, that is to say the bearing portion 22 can support the optical layer structure 1, the second mounting through hole 21 is disposed in the limiting portion 23. The support portion 22 and the stopper portion 23 correspond to a structure protruding upward from the back plate 2, and a step difference is formed between the groove portion 24 and the support portion 22. And the heights of the bearing part 22 and the limiting part 23 can be approximately the same, so that the optical layer structure 1 can be kept basically horizontal, preferably, the bearing part 22 is higher than the limiting part 23, so that the buffering effect of the elastic part 4 can be more obvious.
Due to the arrangement of the groove portion 24, the weight of the back plate 2 can be reduced on the premise of ensuring the performance of the back plate 2, so that the quality of the whole backlight module is reduced.
Preferably, the optical layer structure 1 comprises:
a light guide plate;
at least one optical film layer overlapping the light guide plate.
The optical layer structure 1 is composed of a light guide plate and a plurality of optical film layers, such as a reflective layer, a light emitting layer, and a color film layer.
Specifically, the light guide plate has a mesh point capable of emitting light uniformly, and a certain distance is provided between the edge of the first mounting through hole 11 and the mesh point, preferably, the distance is 0.1-0.15mm, so as to ensure the light emitting performance of the light guide plate.
In addition, the backlight module can be a side-in type backlight module, that is, the backlight module has a light bar installed on the side-in surface of the light guide plate, and a certain distance is provided between the side-in surface of the light guide plate and the light bar, and the distance can be 0.1-0.25 mm.
Example 3:
as shown in fig. 1 to 3, the present embodiment provides a display device, including the backlight module of any one of embodiment 1 or embodiment 2.
It should be noted that the display device further includes a display module located at the light exit side of the backlight module, and the display module includes a liquid crystal layer and a buffer pad for buffering the liquid crystal layer.
Specifically, the display device can be any product or component with a display function, such as a liquid crystal display panel, electronic paper, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
In accordance with the embodiments of the present invention as set forth above, these embodiments are not exhaustive and do not limit the invention to the precise embodiments described. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical application, to thereby enable others skilled in the art to best utilize the invention and its various embodiments with various modifications as are suited to the particular use contemplated. The present invention is limited only by the claims and their full scope and equivalents.
Claims (11)
1. A backlight module, comprising:
an optical layer structure for directing light out; the optical layer structure is provided with a light emergent area for light ray to be emitted out and an installation area positioned at the periphery of the light emergent area, and the optical layer structure comprises a first installation through hole positioned in the installation area;
a back plate for carrying the optical layer structure, the back plate including a second mounting through hole corresponding to the first mounting through hole;
and the connecting piece is at least partially arranged in the first mounting through hole and the second mounting through hole in a penetrating manner, so that the optical layer structure and the back plate are positioned relatively.
2. A backlight module according to claim 1, wherein the connector comprises:
the columnar connecting part is arranged in the first mounting through hole and the second mounting through hole in a penetrating mode;
the first fixing part is fixed at the first end of the columnar connecting part and is positioned on one side, away from the backboard, of the optical layer structure, and the cross section of the first fixing part is larger than that of the first mounting through hole;
and the second fixing part is connected with the second end of the columnar connecting part, so that the connecting piece is fixed relative to the back plate.
3. The backlight module as claimed in claim 2, wherein the portion of the pillar connecting portion located in the first mounting through hole is in transition fit with the first mounting through hole.
4. The backlight module according to claim 2, wherein the second mounting through hole has a boss therein, the boss being disposed along a circumferential direction of the second mounting through hole;
the second fixing part is positioned on one side of the boss far away from the optical layer structure, and the cross-sectional area of the second fixing part is larger than that of a hole formed in the inner side face of the boss.
5. The backlight module as claimed in claim 4, wherein the second fixing portion is fixedly connected to the second end of the pillar connecting portion, and the second fixing portion is made of an elastic material.
6. The backlight module as claimed in claim 4, wherein the second fixing portion is screwed to the second end of the pillar connecting portion.
7. The backlight module of claim 4, further comprising:
the elastic piece is positioned in the second mounting through hole and positioned between the optical layer structure and the boss, the size of the elastic piece in an unstressed state is larger than a first size in the direction perpendicular to the optical layer structure, and the first size is the distance between the surface of the boss close to the optical layer structure and the surface of the second mounting through hole close to the optical layer structure.
8. A backlight module according to claim 7, wherein the elastic member is a spring or a rubber block.
9. The backlight module according to claim 1, wherein the back plate comprises:
the bearing part corresponds to the light emergent area of the optical layer structure;
a limiting part corresponding to the mounting region of the optical layer structure;
the groove part is positioned between the bearing part and the limiting part, the first surface of the groove part is far away from the optical layer structure than the first surfaces of the bearing part and the limiting part respectively, and the first surface is the surface of the back plate close to the optical layer structure.
10. A backlight module according to claim 1, wherein the optical layer structure comprises:
a light guide plate;
at least one optical film layer overlapping the light guide plate.
11. A display device comprising the backlight module of any one of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921360963.7U CN210401957U (en) | 2019-08-21 | 2019-08-21 | Backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921360963.7U CN210401957U (en) | 2019-08-21 | 2019-08-21 | Backlight module and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210401957U true CN210401957U (en) | 2020-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921360963.7U Active CN210401957U (en) | 2019-08-21 | 2019-08-21 | Backlight module and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210401957U (en) |
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2019
- 2019-08-21 CN CN201921360963.7U patent/CN210401957U/en active Active
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