CN210123509U - Backlight module and display device - Google Patents
Backlight module and display device Download PDFInfo
- Publication number
- CN210123509U CN210123509U CN201920996380.7U CN201920996380U CN210123509U CN 210123509 U CN210123509 U CN 210123509U CN 201920996380 U CN201920996380 U CN 201920996380U CN 210123509 U CN210123509 U CN 210123509U
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- 230000003287 optical effect Effects 0.000 claims abstract description 15
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- 239000012528 membrane Substances 0.000 claims description 5
- 150000003071 polychlorinated biphenyls Chemical class 0.000 claims 4
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000012788 optical film Substances 0.000 description 8
- 238000005452 bending Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
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- 230000005540 biological transmission Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
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- 239000011521 glass Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of display devices, in particular to a backlight module and a display device, wherein the backlight module comprises a back plate, a diffusion plate, an optical diaphragm and a plurality of support frames, the back plate and the diffusion plate are arranged at intervals, and the optical diaphragm is attached to one side of the diffusion plate away from the back plate; the support frame comprises a base, a support rod and an adjusting rod; the base is arranged on the back plate, and a through hole is formed in the base; the support rod penetrates through the through hole, the support rod can move axially along the through hole relative to the base, a blind hole is formed in one end of the support rod, and the other end of the support rod is abutted against the diffusion plate; one end of the adjusting rod is inserted into the blind hole, the other end of the adjusting rod is connected to the base, and the adjusting rod is configured to adjust the height of the supporting rod. The display device comprises the backlight module. The height-adjustable of support frame can be applicable to the mixed light distance's of direct type of difference demand, has stronger commonality. Different support frames do not need to be developed according to different light mixing distances, repeated die sinking is not needed, and production cost is reduced.
Description
Technical Field
The utility model relates to a display device technical field especially relates to a backlight module and display device.
Background
The backlight module is one of the key components of the liquid crystal display device, and provides a light source with uniform brightness and distribution for the display panel, so that the liquid crystal glass displays images. Therefore, the light-emitting effect of the backlight module directly affects the display effect of the display device.
Generally, backlight modules are classified into direct type backlight modules and edge type backlight modules according to the position of a light source. The direct type backlight module mainly comprises a back plate, a reflector plate, LED light sources, a diffusion plate, an optical membrane and a middle frame, wherein a plurality of light sources are arranged between the diffusion plate and the back plate. A certain light mixing distance is required to be kept between the back plate and the diffusion plate, so that light emitted by the light source is uniformly mixed. When straight following formula backlight unit level was placed, optics diaphragm easily takes place bending deformation under self action of gravity, leads to optics diaphragm to diminish to the distance between the backplate, can make optics diaphragm extrusion light source even, leads to backlight unit's luminous effect inhomogeneous.
Therefore, in order to reduce the bending deformation of the optical film under the action of its own weight, a support frame is usually disposed between the back plate and the diffuser plate, one end of the support frame is fixedly connected to the back plate, and the other end supports the diffuser plate and the optical film when the direct-type backlight module is horizontally disposed, so as to reduce the collapse or bending deformation of the diffuser plate and the optical film.
The direct type light mixing distances of the current mainstream are 18mm, 20mm, 25mm, 28mm and the like. Usually, a light mixing distance should correspond to a diffuser plate support height, and when different light mixing distances are needed, different support products are needed.
Products with different light mixing distances use different support frame products, and need to be opened for multiple times, so that the production cost is increased, and the project development period is delayed due to the time required by opening and testing the mold. And the adjacent light mixing distance support frames are easy to mix in production, so that the production and maintenance cost is improved.
Therefore, a backlight module and a display device are needed to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a backlight unit and display device, backlight unit's support frame height-adjustable can be applicable to the demand of the mixed light distance of the straight following formula of difference, has stronger commonality.
To achieve the purpose, the utility model adopts the following technical proposal:
on one hand, the backlight module comprises a back plate, a diffusion plate, an optical membrane and a plurality of support frames, wherein the back plate and the diffusion plate are arranged at intervals, and the optical membrane is attached to one side of the diffusion plate, which is far away from the back plate; the support frame includes:
the base is arranged on the back plate, and a through hole is formed in the base;
the support rod penetrates through the through hole, the support rod can move axially along the through hole relative to the base, a blind hole is formed in one end of the support rod, and the other end of the support rod is abutted against the diffusion plate;
one end of the adjusting rod is inserted into the blind hole, the other end of the adjusting rod is connected to the base, and the adjusting rod is configured to adjust the height of the supporting rod.
Preferably, a first internal thread is arranged in the blind hole, an external thread matched with the internal thread is arranged at one end of the adjusting rod inserted in the blind hole, and the adjusting rod can rotate relative to the base.
Preferably, the adjusting rod is provided with a plurality of first adjusting holes arranged radially at intervals in the axial direction, the supporting rod is provided with second adjusting holes matched with the first adjusting holes, and adjusting pins are inserted into the second adjusting holes and one of the first adjusting holes; or
The adjusting rod is provided with first adjusting holes which are radially arranged, the supporting rod is provided with a plurality of second adjusting holes which are matched with the first adjusting holes at intervals in the axial direction, and adjusting pins are inserted into the first adjusting holes and one of the second adjusting holes; or
The adjusting rod is provided with a plurality of first adjusting holes which are radially arranged at intervals in the axial direction, the supporting rod is provided with a plurality of second adjusting holes which are matched with the first adjusting holes at intervals in the axial direction, and adjusting pins are inserted into one of the first adjusting holes and one of the second adjusting holes.
Preferably, a second internal thread is arranged in the through hole, the spiral direction and the thread pitch of the second internal thread are the same as those of the first internal thread, and a second external thread matched with the second internal thread is arranged on the supporting rod.
Preferably, the support frame further comprises a limiting plate disposed at the bottom of the base, and the limiting plate is configured to limit the adjusting rod from moving downwards.
Preferably, the base includes interconnect's base and connecting seat, the base set up in on the backplate, the through-hole set up in on the connecting seat, be provided with the shoulder hole on the base, adjust the pole connect in the one end of base is provided with the nut, the nut is located in the big aperture section of shoulder hole, the limiting plate set up in the bottom of base.
Preferably, the base is fixed on the back plate or the light bar through clamping, bonding or screws.
Preferably, the lamp strip includes PCB, LED lamp pearl and optical lens, be provided with a plurality of parallel arrangement's PCB on the backplate, the interval is provided with a plurality of on the PCB LED lamp pearl, optical lens detain in on the LED lamp pearl.
Preferably, the backlight module further comprises a reflective sheet, and the reflective sheet is attached to the inner side of the back plate.
In another aspect, a display device is provided, which includes the backlight module as described above.
The utility model has the advantages that: the height-adjustable of support frame can be applicable to the mixed light distance's of direct type of difference demand, has stronger commonality. Different support frames do not need to be developed according to different light mixing distances, and multiple die sinking is not needed, so that the production cost is reduced, and the project development period is shortened.
Drawings
Fig. 1 is a cross-sectional view of a backlight module provided by the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
fig. 3 is a schematic structural diagram of a backlight module provided by the present invention (only one support frame is shown, and the reflector, the diffuser and the optical film are not included);
FIG. 4 is an enlarged partial view at B in FIG. 3;
fig. 5 is a schematic structural diagram of the support frame provided by the present invention;
fig. 6 is a cross-sectional view of the support frame provided by the present invention.
In the figure: 1. a back plate; 2. a diffusion plate; 3. an optical film;
4. a support frame; 41. a base; 411. a base; 412. a connecting seat; 413. a connecting frame; 42. a support bar; 421. a support portion; 422. an adjustment section; 43. adjusting a rod; 431. a nut; 432. an adjustment groove; 44. A limiting plate; 441. an adjustment hole;
5. a light bar; 51. a PCB; 52. an optical lens; 6. a reflective sheet.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
As shown in fig. 1-4, the present embodiment discloses a backlight module, which includes a housing 1, a diffuser plate 2, an optical film 3 and a plurality of supporting frames 4, wherein the housing 1 and the diffuser plate 2 are disposed at an interval, the optical film 3 is attached to a side of the diffuser plate 2 away from the housing 1, the supporting frames 4 are disposed between the housing 1 and the diffuser plate 2, and the supporting frames 4 are configured to support the diffuser plate 2 and the optical film 3.
The inboard of backplate 1 is provided with a plurality of parallel arrangement's lamp strip 5, and lamp strip 5 includes PCB51, LED lamp pearl and optical lens 52, is provided with a plurality of parallel arrangement's PCB51 on the backplate 1, and PCB51 is fixed in the inboard of backplate 1 through screw or the mode of bonding. A plurality of LED lamp beads are uniformly arranged on the PCB51 at intervals, and the optical lens 52 is buckled on the LED lamp beads. The optical lens 52 is made of organic plastic material such as acrylic, polycarbonate or polystyrene.
Optionally, the backlight module further includes a reflector 6, the reflector 6 is attached to the inner side of the back plate 1, and the reflector 6 can refract and reflect light emitted by the LED lamp beads to make the light enter the diffusion plate 2.
As shown in fig. 5 and 6, the supporting frame 4 includes a base 41, a supporting rod 42 and an adjusting rod 43, the base 41 is disposed on the back plate 1, and the base 41 is provided with a through hole. The support rod 42 is inserted into the through hole, the support rod 42 can move axially along the through hole relative to the base 41, one end of the support rod 42 is provided with a blind hole, and the other end of the support rod 42 is abutted to the diffuser plate 2. One end of the adjustment rod 43 is inserted into the blind hole, and the other end is connected to the base 41, and the adjustment rod 43 is configured to adjust the height of the support rod 42.
The height of the supporting frame 4 can be adjusted to meet the requirements of different direct type light mixing distances, and the supporting frame has strong universality. Different support frames 4 do not need to be developed according to different light mixing distances, and multiple die sinking is not needed, so that the production cost is reduced, and the project development period is shortened.
Preferably, the specific way of adjusting the height of the supporting frame 4 in this embodiment is as follows: be provided with first internal thread in the blind hole, the one end of adjusting the pole 43 and inserting in the blind hole is provided with the external screw thread with internal thread assorted, and adjust pole 43 and can rotate for base 41, comes the height of adjusting the bracing piece 42 through rotatory regulation pole 43 to the height of adjustment support frame 4.
When the bottom of the support rod 42 is rotated to coincide with the base 41, the height of the support stand 4 is minimized. In order to match the light mixing distance of the direct type which is mainstream at present, 18mm, 20mm, 25mm, 28mm and the like are generally available, the minimum height of the support frame 4 is 17.5mm (in practical design, a gap of 0.5-0.8mm is left between the diffusion plate 2 and the support frame 4), and the light mixing distance of 18mm can be supported. The maximum stroke of the adjusting rod 43 is set to 10mm, the maximum height of the supporting frame 4 can be 27.5mm, and the light mixing distance of 28mm can be supported. The height of the support frame 4 can be adjusted between 17.5mm and 27.5mm, and the support frame 4 product with the light mixing distance required by 18-28mm design can be compatible.
Be provided with the second internal thread in the through-hole, be provided with on the bracing piece 42 with second internal thread assorted second external screw thread, the second internal thread is the same with first internal thread's screw direction and pitch homogeneous phase, can make to carry out effectual transmission between regulation pole 43 and bracing piece 42, between bracing piece 42 and the base 41, otherwise can produce and interfere unable effective transmission.
The support rod 42 includes a support portion 421 and an adjusting portion 422 connected to each other, which may be connected by bonding, clipping or screwing. The supporting portion 421 is made of organic plastic material such as acrylic, polycarbonate or polystyrene, the supporting portion 421 is cone-shaped, the supporting rod 42 is cone-frustum-shaped in this embodiment, and may be pyramid-frustum-shaped in other embodiments. The tip butt of bracing piece 42 is in diffuser plate 2, and the tip butt can reduce in diffuser plate 2 with diffuser plate 2's area of contact, reduces the sheltering from to the diffuser plate 2 back, reduces the influence of accepting light to diffuser plate 2, makes diffuser plate 2 accept light more even. Blind hole and external screw thread all set up on regulation portion 422, and regulation portion 422 and regulation pole 43 are the metal material, can increase the intensity of first internal thread, first external screw thread and second external screw thread.
The supporting frame 4 further includes a limiting plate 44, the limiting plate 44 is disposed at the bottom of the base 41, and the limiting plate 44 is configured to limit the downward movement of the adjusting lever 43. Specifically, the base 41 is made of metal, and the strength of the second internal thread can be increased. The base 41 includes a base 411 and a connecting seat 412 that are connected to each other, and the base 411 is fixed on the back panel 1 or the light bar 5, in this embodiment, the base 411 is fixed on the back panel 1 or the light bar 5 by screws. In other embodiments, the base 411 may be fixed to the back plate 1 or the light bar 5 by a snap fit or an adhesive. The connecting seat 412 is cylindrical, the connecting seat 412 and the base 41 are arranged at intervals, connecting frames 413 are arranged on two sides of the connecting seat 412, and the connecting seat 412 is fixed on the base 411 through the connecting frames 413. The through hole is arranged on the connecting base 412, a stepped hole is formed in the base 411, a nut 431 is arranged at one end, connected to the base 41, of the adjusting rod 43, the nut 431 is located in a large-aperture section of the stepped hole, a groove is formed in the bottom surface of the base 411, and the limiting plate 44 is fixed in the groove in a screw or bonding mode. The nut 431 is provided with an adjusting groove 432, the limiting plate 44 is provided with an adjusting hole 441, the aperture of the adjusting hole 441 is smaller than the outer diameter of the nut 431, and the nut 431 is abutted against the limiting plate 44 to prevent the adjusting rod 43 from falling off. An adjusting member such as a screwdriver can be inserted through the adjusting hole 441 and screwed on the adjusting slot 432 to adjust the height of the supporting frame 4 by twisting the adjusting rod 43.
In other embodiments, the height of the supporting frame 4 is adjusted by: the adjusting rod 43 is provided with a plurality of first adjusting holes radially arranged at intervals in the axial direction, the supporting rod 42 is provided with a second adjusting hole matched with the first adjusting holes, an adjusting pin is inserted into the second adjusting hole and one of the first adjusting holes, and the height of the supporting frame 4 is adjusted by changing the position of the adjusting pin inserted on the adjusting rod 43.
It can also be: the adjusting rod 43 is provided with a first adjusting hole which is radially arranged, the supporting rod 42 is provided with a plurality of second adjusting holes which are matched with the first adjusting hole at intervals in the axial direction, an adjusting pin is inserted into the first adjusting hole and one of the second adjusting holes, and the height of the supporting frame 4 is adjusted by changing the position of the adjusting pin inserted on the supporting rod 42.
Of course it is also possible: the adjusting rod 43 is provided with a plurality of first adjusting holes radially arranged at intervals in the axial direction, the supporting rod 42 is provided with a plurality of second adjusting holes matched with the first adjusting holes at intervals in the axial direction, adjusting pins penetrate through one of the first adjusting holes and one of the second adjusting holes, and the height of the supporting frame 4 is adjusted by changing the positions of the adjusting pins inserted in the adjusting rod 43 and the supporting rod 42.
The embodiment also discloses a display device which comprises the backlight module.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A backlight module comprises a back plate (1), a diffusion plate (2), an optical membrane (3) and a plurality of support frames (4), wherein the back plate (1) and the diffusion plate (2) are arranged at intervals, and the optical membrane (3) is attached to one side, away from the back plate (1), of the diffusion plate (2); characterized in that the support frame (4) comprises:
the base (41), the base (41) is arranged on the back plate (1), and a through hole is formed in the base (41);
the support rod (42) penetrates through the through hole, the support rod (42) can move axially along the through hole relative to the base (41), a blind hole is formed in one end of the support rod (42), and the other end of the support rod (42) is abutted against the diffusion plate (2);
an adjusting rod (43), one end of the adjusting rod (43) is inserted into the blind hole, the other end of the adjusting rod is connected to the base (41), and the adjusting rod (43) is configured to adjust the height of the supporting rod (42).
2. The backlight module according to claim 1, wherein a first internal thread is disposed in the blind hole, an external thread matching the internal thread is disposed at an end of the adjusting rod (43) inserted in the blind hole, and the adjusting rod (43) is capable of rotating relative to the base (41).
3. The backlight module as claimed in claim 1, wherein the adjusting rod (43) has a plurality of radially disposed first adjusting holes spaced apart from each other in an axial direction, the supporting rod (42) has a second adjusting hole matching with the first adjusting holes, and an adjusting pin is inserted into the second adjusting hole and one of the first adjusting holes; or
The adjusting rod (43) is provided with first adjusting holes which are arranged in the radial direction, the supporting rod (42) is provided with a plurality of second adjusting holes which are matched with the first adjusting holes at intervals in the axial direction, and adjusting pins are inserted into the first adjusting holes and one of the second adjusting holes; or
The adjusting rod (43) is provided with a plurality of first adjusting holes which are radially arranged at intervals in the axial direction, the supporting rod (42) is provided with a plurality of second adjusting holes which are matched with the first adjusting holes at intervals in the axial direction, and adjusting pins are inserted into one of the first adjusting holes and one of the second adjusting holes.
4. The backlight module according to claim 2, wherein a second internal thread is disposed in the through hole, the second internal thread has the same spiral direction and pitch as the first internal thread, and a second external thread matching the second internal thread is disposed on the support rod (42).
5. The backlight module according to claim 2, wherein the supporting frame (4) further comprises a limiting plate (44), the limiting plate (44) is disposed at the bottom of the base (41), and the limiting plate (44) is configured to limit the downward movement of the adjusting rod (43).
6. The backlight module according to claim 5, wherein the base (41) comprises a base (411) and a connecting seat (412) connected to each other, the base (411) is fixed on the back plate (1) or the light bar (5) of the back plate (1), the through hole is disposed on the connecting seat (412), a stepped hole is disposed on the base (411), a nut (431) is disposed at one end of the adjusting rod (43) connected to the base (41), the nut (431) is located in a large-aperture section of the stepped hole, and the limiting plate (44) is disposed at the bottom of the base (411).
7. The backlight module as claimed in claim 6, wherein the base (411) is fixed on the back plate (1) or the light bar (5) by clipping, bonding or screwing.
8. The backlight module according to claim 6, wherein the light bar (5) comprises a PCB (51), LED beads and an optical lens (52), the back plate (1) is provided with a plurality of PCBs (51) arranged in parallel, the PCBs (51) are provided with a plurality of LED beads at intervals, and the optical lens (52) is buckled on the LED beads.
9. The backlight module according to claim 1, further comprising a reflective sheet (6), wherein the reflective sheet (6) is attached to the inner side of the back plate (1).
10. A display device comprising a backlight module according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920996380.7U CN210123509U (en) | 2019-06-28 | 2019-06-28 | Backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920996380.7U CN210123509U (en) | 2019-06-28 | 2019-06-28 | Backlight module and display device |
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| Publication Number | Publication Date |
|---|---|
| CN210123509U true CN210123509U (en) | 2020-03-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920996380.7U Expired - Fee Related CN210123509U (en) | 2019-06-28 | 2019-06-28 | Backlight module and display device |
Country Status (1)
| Country | Link |
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| CN (1) | CN210123509U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113031342A (en) * | 2021-03-18 | 2021-06-25 | 绵阳惠科光电科技有限公司 | Support frame, straight following formula backlight unit and display device |
| CN114265244A (en) * | 2022-03-02 | 2022-04-01 | 惠科股份有限公司 | Backlight module and display device |
| CN115343883A (en) * | 2022-06-30 | 2022-11-15 | 惠科股份有限公司 | Backlight module and display device |
| CN117055257A (en) * | 2023-07-18 | 2023-11-14 | 滁州惠科光电科技有限公司 | Backlight module and display device |
-
2019
- 2019-06-28 CN CN201920996380.7U patent/CN210123509U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113031342A (en) * | 2021-03-18 | 2021-06-25 | 绵阳惠科光电科技有限公司 | Support frame, straight following formula backlight unit and display device |
| CN113031342B (en) * | 2021-03-18 | 2024-04-26 | 绵阳惠科光电科技有限公司 | Support frame, direct type backlight module and display device |
| CN114265244A (en) * | 2022-03-02 | 2022-04-01 | 惠科股份有限公司 | Backlight module and display device |
| CN115343883A (en) * | 2022-06-30 | 2022-11-15 | 惠科股份有限公司 | Backlight module and display device |
| CN115343883B (en) * | 2022-06-30 | 2024-09-06 | 惠科股份有限公司 | Backlight module and display device |
| CN117055257A (en) * | 2023-07-18 | 2023-11-14 | 滁州惠科光电科技有限公司 | Backlight module and display device |
| CN117055257B (en) * | 2023-07-18 | 2024-06-07 | 滁州惠科光电科技有限公司 | Backlight module and display device |
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Granted publication date: 20200303 |