CN215576034U - Backlight module and liquid crystal display device - Google Patents
Backlight module and liquid crystal display device Download PDFInfo
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- CN215576034U CN215576034U CN202122469728.7U CN202122469728U CN215576034U CN 215576034 U CN215576034 U CN 215576034U CN 202122469728 U CN202122469728 U CN 202122469728U CN 215576034 U CN215576034 U CN 215576034U
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Abstract
The utility model discloses a backlight module and a liquid crystal display device, wherein the backlight module comprises a back plate, a lamp panel, a light-emitting unit and a reflector plate; the back plate is provided with a containing groove; the lamp panel is laid at the bottom of the accommodating groove, an inclined plane is formed at the edge of the lamp panel, and the inclined plane and the contact surface of the backboard for bearing the lamp panel are arranged in an acute angle; the plurality of light-emitting units are arranged on the lamp panel at intervals; the reflector plate covers on the lamp plate, just the reflector plate is offered and is used for dodging the dodging hole of luminescence unit. The technical scheme of the utility model can improve the light-emitting quality of the backlight module.
Description
Technical Field
The utility model relates to the technical field of display, in particular to a backlight module and a liquid crystal display device.
Background
The Mini LED technology is a novel backlight module technical form, realizes the regional dimming within a smaller range through a large number of densely distributed LEDs, and compared with the traditional backlight design, the Mini LED technology can be provided with better brightness uniformity, higher color contrast and higher brightness index within a smaller light mixing distance, and can flexibly realize various subarea display effects. However, the Mini LED technology has some obvious technical defects at the display application end, that is, local areas are brighter or darker easily due to light energy loss, so that the overall light emitting brightness is not uniform.
SUMMERY OF THE UTILITY MODEL
The present invention provides a backlight module, which aims to improve the light-emitting quality of the backlight module.
In order to achieve the above object, the present invention provides a backlight module, including:
the back plate is provided with a containing groove;
the lamp panel is laid at the bottom of the accommodating groove, an oblique section is formed at the edge of the lamp panel, and the oblique section and the contact surface of the backboard for bearing the lamp panel are arranged in an acute angle;
the light emitting units are arranged on the lamp panel at intervals; and
the reflector plate covers on the lamp plate, just the reflector plate is offered and is used for dodging the hole of dodging of luminescence unit.
Optionally, the edge all around of lamp plate all is provided with the scarf.
Optionally, four of the lamp panel the scarf has different inclination.
Optionally, the lamp plate includes polylith lamp plate monomer, polylith lamp plate monomer interval set up in the accepting groove bottom, and adjacent two form the piece between the lamp plate monomer, the polylith be close to in the lamp plate monomer orientation of the lateral wall of accepting groove the edge of the lateral wall of accepting groove is formed with the scarf.
Optionally, the polylith lamp plate monomer all is provided with all around the edge the scarf, the reflector plate covers the piece.
Optionally, the multiple lamp panel monomers are arranged in a staggered mode, and the inclined planes between the lamp panel monomers have the same or different inclination angles.
Optionally, the light emitting unit is a light emitting diode group.
Optionally, the backlight module further includes a diffusion plate, and the diffusion plate covers the back plate and closes the receiving groove.
Optionally, an optical film group is disposed on the diffuser plate.
The utility model also provides a liquid crystal display device which comprises the backlight module.
According to the technical scheme, the lamp panel is laid at the bottom of the accommodating groove, the oblique planes which are arranged at acute angles with the contact surface of the lamp panel carried by the backboard are formed at the edge of the lamp panel, the light-emitting units are arranged on the lamp panel at intervals, so that light rays emitted by the light-emitting units can directly irradiate to the middle area of the notch of the accommodating groove and obliquely irradiate to the edge area of the notch, the light-emitting brightness at the notch is further uniform, and the light-emitting quality of the backlight module is prevented from being influenced by the generation of dark fringes at the edge; the reflector plate covers on the lamp plate, and the reflector plate is offered and is used for dodging lighting unit's dodging the hole for the reflector plate can be with the light reflection of orientation lamp plate direction and make light jet out by the accepting groove notch, improves the utilization ratio to light, further improves backlight unit's luminous luminance and luminous quality.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a backlight module according to an embodiment of the utility model.
The reference numbers illustrate:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a backlight module.
Referring to fig. 1, in the embodiment of the present invention, the backlight module includes a back plate 10, a lamp panel 20, a light emitting unit 30, and a reflector 40; the back plate 10 has a receiving groove 101; the lamp panel 20 is laid at the bottom of the accommodating groove 101, an inclined plane 202 is formed at the edge of the lamp panel 20, and the inclined plane 202 and the contact surface of the backboard 10 bearing the lamp panel 20 form an acute angle; a plurality of light emitting units 30 are arranged on the lamp panel 20 at intervals; the reflector 40 covers the lamp panel 20, and the reflector 40 is provided with an avoiding hole for avoiding the light emitting unit 30.
The back plate 10 comprises a bottom plate and a side plate, wherein the bottom plate and the side plate are connected to form a containing groove 101; the lamp panel 20 is laid on the bottom wall of the accommodating groove 101, an oblique plane 202 is formed at the edge of the lamp panel 20, the oblique plane 202 and the contact surface of the backboard 10 bearing the lamp panel 20 are arranged in an acute angle, namely when the lamp panel 20 is laid on the bottom plate, the surface of the bottom plate, which is abutted against the lamp panel 20, is a contact surface, the surface of the lamp panel 20, which is far away from the bottom plate, is an installation surface, and the installation surface comprises a plane parallel to the contact surface and an oblique plane 202 which extends from the plane and is connected with the contact surface, wherein the included angle between the oblique plane 202 and the contact surface is an acute angle, so that the longitudinal section of the lamp panel 20 with the view angle of fig. 1 is in a trapezoidal structure; the light emitting units 30 are arranged on the mounting surface of the lamp panel 20 at intervals, that is, the light emitting units 30 are respectively mounted on the plane and the inclined plane 202, so that the light emitting units 30 respectively emit light perpendicular to the plane and light perpendicular to the inclined plane 202, and further the light perpendicular to the plane is directly emitted from the middle area of the notch of the accommodating groove 101, and the light perpendicular to the inclined plane 202 is emitted from the edge area of the notch of the accommodating groove 101, so that the brightness of the light at the notch of the accommodating groove 101 is uniform, which is convenient for providing uniform brightness, and avoids the formation of dark lines at the edge of the backlight module, which causes uneven brightness and affects display. The reflector plate 40 covers on the lamp panel 20, namely, the reflector plate 40 can be fixed on the mounting surface of the lamp panel 20 by means of bonding of double-sided adhesive tape, meanwhile, an avoiding hole is formed in the reflector plate 40 and used for avoiding the light-emitting unit 30, the reflector plate 40 is embedded around the light-emitting unit 30, light rays emitted by the light-emitting unit 30 and facing the direction of the lamp panel 20 are further reflected to the notch of the accommodating groove 101, the utilization rate of the light rays is improved, and the brightness and the light-emitting quality of the backlight module are further improved.
According to the technical scheme, the lamp panel 20 is laid at the bottom of the accommodating groove 101, the oblique planes 202 arranged at acute angles with the contact surface of the backboard 10 carrying the lamp panel 20 are formed at the edge of the lamp panel 20, and the light emitting units 30 are arranged on the lamp panel 20 at intervals, so that light emitted by the light emitting units 30 can be directly emitted to the middle area of the notch of the accommodating groove 101 and obliquely emitted to the edge area of the notch, further the light emitting brightness at the notch is uniform, and the light emitting quality of the backlight module is prevented from being influenced by the generation of dark fringes at the edge; the reflector plate 40 covers the lamp panel 20, and the reflector plate 40 is provided with an avoiding hole for avoiding the light-emitting unit 30, so that the reflector plate 40 can reflect light rays towards the lamp panel 20 and enable the light rays to be emitted from the notch of the accommodating groove 101, the utilization rate of the light rays is improved, and the light-emitting brightness and the light-emitting quality of the backlight module are further improved.
Referring to fig. 1, in one embodiment, the lamp panel 20 is provided with chamfered surfaces 202 at the peripheral edges. Specifically, the four chamfered surfaces 202 of the lamp panel 20 have different inclination angles.
This application lamp plate 20 all is provided with scarf 202 around the edge, all installs luminescence unit 30 on the scarf 202 for notch marginal area all around can obtain the light that sends by luminescence unit 30 on the scarf 202, further makes marginal area obtain the replenishment of light energy, improves backlight unit's the luminous degree of consistency, thereby improves backlight unit's luminous quality.
The inclination angle definition of scarf 202 is the contained angle size between scarf 202 and the contact surface, furtherly, four scarf 202 of lamp plate 20 have different inclination, the inclination of scarf 202 sets up according to the luminance demand of specific marginal zone promptly, make corresponding marginal zone obtain corresponding light energy and supplement, thereby improve marginal zone's luminance, make the transition of light energy of middle zone and marginal zone more natural, further improve luminance uniformity, the condition such as reduction facula or dark line appears, effectively improve luminous quality.
Referring to fig. 1, in an embodiment, the lamp panel 20 includes a plurality of lamp panel monomers 201, the plurality of lamp panel monomers 201 are arranged at the bottom of the accommodating cavity 101 at intervals, an edge joint 203 is formed between two adjacent lamp panel monomers 201, and an oblique section 202 is formed at the edge of the sidewall of the accommodating cavity 101, which is close to the lamp panel monomer 201 of the sidewall of the accommodating cavity 101, in the plurality of lamp panel monomers 201. Specifically, the edges of the peripheries of the lamp panel monomers 201 are provided with chamfered surfaces 202, and the reflective sheets 40 cover the seams 203. Further, the inclined planes 202 between the lamp panel single bodies 201 have the same or different inclination angles.
This application lamp plate 20 includes polylith lamp plate monomer 201, and the polylith includes two and more than two, and the quantity of specific lamp plate monomer 201 can set up as required, does not do specifically injecing here. Polylith lamp plate monomer 201 interval sets up in accepting groove 101 bottom, and it can be according to the dimensional requirement of lamp plate 20, can be that single row multiseriate splices, also can be that it splices to be multirow multiseriate, and consequently specific concatenation mode can set up according to the demand. The lamp plate monomer 201 can be fixed through modes such as bonding, soldering tin, avoid outside collision to make lamp plate monomer 201 shift or damage, improve the stability of lamp plate monomer 201 installation.
Be provided with light-emitting unit 30 on lamp plate monomer 201, when lamp plate monomer 201 and lamp plate monomer 201 splice, wherein the lamp plate monomer 201 that is close to the lateral wall of accepting groove 101 is formed with scarf 202 towards the edge of the lateral wall of accepting groove 101, and then install in scarf 202 light-emitting unit 30 can send the light of outgoing to the marginal area of accepting groove 101 notch to carry out light energy to marginal area and compensate, thereby make luminance even, improve luminous quality. Still laid reflector plate 40 on lamp plate monomer 201, reflector plate 40 inlays through the dodging effect of dodging the hole and locates around luminescence unit 30 for reflector plate 40 can reflect the light of luminescence unit 30 orientation lamp plate monomer 201 to the notch of accepting groove 101, improves the utilization ratio of the light that luminescence unit 30 sent, further improves luminance and luminous quality. Meanwhile, an assembly gap exists between the lamp panel single body 201 and the lamp panel single body 201 to form the seam 203, the edges of the periphery of each lamp panel single body 201 are provided with the inclined planes 202, namely the seam 203 is formed between the inclined planes 202 and the inclined planes 202, and part of the light-emitting units 30 are paved on the inclined planes 202, so that light emitted by the light-emitting units 30 on the two adjacent inclined planes 202 can be superposed, the light-emitting brightness of the area above the seam 203 is further improved, the light supplementing effect is realized, the light energy transition between the lamp panel single body 201 and the lamp panel single body 201 is ensured to be natural, and the light-emitting quality is improved. Further, the reflection sheet 40 covers the seam 203, that is, the reflection sheet 40 is laid on the plurality of lamp panel units 201 and covers the seam 203 between the two lamp panel units 201, so that the light emitted by the light emitting unit 30 and directed to the lamp panel units 201 is reflected to the notch of the accommodating groove 101, the utilization rate of the light emitted by the light emitting unit 30 is improved, and the light emitting quality is further improved.
The scarf 202 between this application polylith lamp plate monomer 201 has the same or different inclination, the scarf 202 between two adjacent lamp plate monomers 201 can have the same or different inclination promptly, the luminous unit 30 that is located on the scarf 202 this moment can launch the light of different angles according to the inclination of difference, thereby carry out the light energy of different degrees to the region of piece 203 top and remedy, and then reach different light filling effects, in order to realize the homogeneity of accepting groove 101 notch luminance, improve light quality.
Referring to fig. 1, in an embodiment, the light emitting unit 30 is a light emitting diode group.
The light emitting unit 30 is a light emitting diode group, the light emitting diode group is a plurality of light emitting diodes, and a plurality of light emitting diode arrays are arranged, so that light emitted by the light emitting diode group is more uniform, and certainly, the plurality of light emitting diodes can also be arranged in other arrangement modes according to needs.
Referring to fig. 1, in an embodiment, the backlight module further includes a diffusion plate 50, and the diffusion plate 50 covers the back plate 10 and closes the receiving groove 101. Further, an optical film group 60 is provided on the diffusion plate 50.
The backlight module further includes a diffusion plate 50 and an optical film set 60, the diffusion plate 50 covers the back plate 10 and closes the receiving slot 101, and the optical film set 60 is disposed on the diffusion plate 50. The diffusion sheet is made of a light-transmitting material, which may be made of polycarbonate or polymethyl methacrylate doped with diffusion particles, and the optical film group 60 includes optical films such as a quantum dot film, a brightness enhancement film, a prism sheet, or a polarizer, and the type of the optical film may be selected according to actual use requirements. The diffusion plate 50 may be fixed to a side plate of the back plate 10 by bonding, embedding, or the like, so that a space is left between the diffusion plate 50 and the reflective sheet 40; the diffusion plate 50 includes a light incident surface facing the light emitting unit 30 and a light emergent surface supporting the optical film assembly 60, so that light emitted from the light emitting unit 30 is diffused by the diffusion particles inside the diffusion plate 50, and then the light is uniformly emitted from the light emergent surface to the optical film assembly 60; the optical film set 60 can adjust the angle of the light diffused from the diffusion plate 50, and further collimate the light diffused by the diffusion plate 50 to make the light emitted within a specific viewing angle range, so as to improve the brightness and quality of the light emitted within the viewing angle range.
The present invention further provides a liquid crystal display device, which includes a backlight module, and the specific structure of the backlight module refers to the above embodiments, and since the liquid crystal display device adopts all the technical solutions of all the above embodiments, the liquid crystal display device at least has all the beneficial effects brought by the technical solutions of the above embodiments, and details are not repeated herein.
The liquid crystal display device can be a television display screen, a computer display screen, a wall display large screen and other display devices.
The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A backlight module is characterized in that the backlight module comprises:
the back plate is provided with a containing groove;
the lamp panel is laid at the bottom of the accommodating groove, an oblique section is formed at the edge of the lamp panel, and the oblique section and the contact surface of the backboard for bearing the lamp panel are arranged in an acute angle;
the light emitting units are arranged on the lamp panel at intervals; and
the reflector plate covers on the lamp plate, just the reflector plate is offered and is used for dodging the hole of dodging of luminescence unit.
2. The backlight module as claimed in claim 1, wherein the chamfered surface is provided at the peripheral edge of the lamp panel.
3. The backlight module as claimed in claim 2, wherein the four oblique planes of the lamp panel have different oblique angles.
4. The backlight module according to claim 1, wherein the lamp panel includes a plurality of lamp panel monomers, the plurality of lamp panel monomers are spaced at the bottom of the receiving groove, a seam is formed between two adjacent lamp panel monomers, and the chamfered surface is formed at an edge of the lamp panel monomer, which is close to the side wall of the receiving groove, of the plurality of lamp panel monomers, facing the side wall of the receiving groove.
5. The backlight module as claimed in claim 4, wherein the chamfered surface is formed at the edge of the lamp panel, and the reflective sheet covers the seam.
6. The backlight module as claimed in claim 4, wherein the oblique planes between the lamp panel units have the same or different oblique angles.
7. The backlight module as claimed in claim 1, wherein the light emitting unit is a light emitting diode group.
8. The backlight module as claimed in claim 1, wherein the backlight module further comprises a diffuser plate covering the back plate and closing the receiving groove.
9. The backlight module as claimed in claim 8, wherein the diffuser plate is provided with an optical film set.
10. A liquid crystal display device comprising the backlight module according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122469728.7U CN215576034U (en) | 2021-10-13 | 2021-10-13 | Backlight module and liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122469728.7U CN215576034U (en) | 2021-10-13 | 2021-10-13 | Backlight module and liquid crystal display device |
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| Publication Number | Publication Date |
|---|---|
| CN215576034U true CN215576034U (en) | 2022-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122469728.7U Active CN215576034U (en) | 2021-10-13 | 2021-10-13 | Backlight module and liquid crystal display device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114265240A (en) * | 2021-12-29 | 2022-04-01 | 绵阳惠科光电科技有限公司 | Backlight module and display device |
| CN114967230A (en) * | 2022-05-06 | 2022-08-30 | 惠科股份有限公司 | Backlight module and display device |
| CN115877611A (en) * | 2022-12-06 | 2023-03-31 | 深圳创维－Rgb电子有限公司 | Backlight module and display device |
-
2021
- 2021-10-13 CN CN202122469728.7U patent/CN215576034U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114265240A (en) * | 2021-12-29 | 2022-04-01 | 绵阳惠科光电科技有限公司 | Backlight module and display device |
| CN114967230A (en) * | 2022-05-06 | 2022-08-30 | 惠科股份有限公司 | Backlight module and display device |
| US11754880B1 (en) * | 2022-05-06 | 2023-09-12 | HKC Corporation Limited | Backlight module and display device |
| CN115877611A (en) * | 2022-12-06 | 2023-03-31 | 深圳创维－Rgb电子有限公司 | Backlight module and display device |
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