Vehicle-mounted backlight module of mini LED lamp capable of improving surface uniformity and vehicle-mounted display device
By introducing a support beam and reflective strip structure into the vehicle backlight module, the light distribution is optimized, solving the problem of surface uniformity of mini LED lights under high temperature, high humidity and thermal shock environments, improving display effect and product stability, and reducing costs.
Patent Information
- Application Number
- CN202520049087.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-09
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2035-01-09
AI Technical Summary
Existing mini LED automotive backlight modules suffer from insufficient uniformity under high temperature, high humidity, and thermal shock environments, resulting in poor display performance, especially in large-size displays where there is a risk of dim lighting around the edges.
A support beam and reflective strip structure is introduced into the vehicle backlight module. A first reflective strip is set on the support beam and a second reflective strip is set on the side of the reflector to optimize the light distribution and improve the surface uniformity.
It improves surface uniformity, enhances product stability and reliability, passes stringent automotive-grade reliability tests, reduces costs, and minimizes processing time.
Smart Images
Figure CN223637851U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to display screen technical field especially, it is a kind of mini LED lamp's vehicle-mounted backlight module and vehicle-mounted display device for improving surface uniformity. BACKGROUND
[0002] With the application of new energy vehicle popularization, the demand of this vehicle-mounted backlight source electronic product also steadily rises, and electronic product is also more and more in daily life, often there is new model demand greater than 12 inches above backlight vehicle-mounted structure. Especially high-end vehicle-mounted display for pursuing high quality, many begin to use mini LED as backlight source, such as COB mode;In the vehicle-mounted backlight source product of 12 inches above large size display screen, vehicle regulation reliability experiment requires high, especially in vehicle-mounted display screen product, there is high temperature and high humidity 1000 hours, and cold and hot impact 1000 cycles 1000 hours of rigorous reliability hard requirement, if general surface uniformity is usually <60% in conventional design, in different thermal expansion and cold contraction environment, there is the risk of dim visual effect of backlight module product around, affect the display effect of vehicle-mounted screen bad phenomenon. SUMMARY
[0003] Therefore, the utility model discloses the purpose at to provide a kind of mini LED lamp's vehicle-mounted backlight module for improving surface uniformity, which can solve the problems in the prior art, optimize the surface uniformity of visual effect of vehicle-mounted backlight module, improve the stability of product, reduce cost.
[0004] The utility model provides a kind of mini LED lamp's vehicle-mounted backlight module for improving surface uniformity, including lower frame, reflector plate, first reflection strip and second reflection strip, the lower frame includes bottom plate and side frame, the bottom plate is formed with the accommodation cavity between the side frame, the reflector plate is located in the accommodation cavity, the bottom plate is fixedly connected with support beam, the support beam is circumferentially arranged around the bottom plate, the support beam is arranged in the accommodation cavity, the first reflection strip is arranged on the support beam, the second reflection strip is connected in the side of the reflector plate, the reflector plate is arranged on the first reflection strip.
[0005] In an embodiment, the support beam is provided with a support surface, the support surface is located at one end of the support beam away from the bottom plate, and the first reflection strip is connected to the support surface.
[0006] In an embodiment, the thickness of the first reflection strip is 0.06mm-0.09mm, and the thickness of the second reflection strip is 0.06mm-0.09mm.
[0007] In an embodiment, the side frame and the support beam are spaced apart.
[0008] In an embodiment, the side frame comprises oppositely arranged first and second side plates and oppositely arranged third and fourth side plates, the first and second side plates are fixedly connected to the third and fourth side plates respectively, the support beam comprises oppositely arranged first and second support plates and oppositely arranged third and fourth support plates, the first and second support plates are connected to or abut against the third and fourth support plates respectively, the first side plate is arranged corresponding to the first support plate, the second side plate is arranged corresponding to the second support plate, the third side plate is arranged corresponding to the third support plate, and the fourth side plate is arranged corresponding to the fourth support plate.
[0009] In an embodiment, the vehicle-mounted backlight module of the mini LED lamp with improved surface uniformity further comprises a light bar, the light bar is fixedly connected to the lower frame, and the distance between the first support beam and the light bar is 4-5 mm.
[0010] In an embodiment, the light bar comprises a plurality of mini LED lamps and a COB substrate, each mini LED lamp is electrically connected to the COB substrate, and the distance between the support surface and the upper surface of the mini LED lamp is 4-5 mm.
[0011] In an embodiment, the shape of the support beam matches the shape of the edge of the reflection plate.
[0012] In an embodiment, the vehicle-mounted backlight module of the mini LED lamp with improved surface uniformity further comprises a light guide plate and an optical film, the light guide plate is arranged on the reflection plate, and the optical film is arranged on the light guide plate.
[0013] The utility model also relates to a vehicle-mounted display device comprising the vehicle-mounted backlight module of the mini LED lamp with improved surface uniformity.
[0014] The vehicle-mounted backlight module of the utility model sets the first reflection strip on the support beam, sets the second reflection strip on the side of the reflection plate, can optimize the visual effect of the vehicle-mounted backlight module, prevents the abnormal darkening around the visual effect, and can not only improve the structure stability and reliability, but also can improve the pass rate of the most rigorous terminal vehicle enterprise "three comprehensive vibration" experiment, save the cost, reduce the product processing time, and reduce the cost of opening mold of each jig. BRIEF DESCRIPTION OF DRAWINGS
[0015] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows, and it should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the premise of the drawings.
[0016] Fig. 1 It is a top view structural schematic diagram of the vehicle-mounted backlight module of the mini LED lamp with improved surface uniformity of the present application.
[0017] Fig. 2 It is a partial sectional view structural schematic diagram of the present application.
[0018] Fig. 3 It is a partial sectional view structural schematic diagram of the vehicle-mounted backlight module of the mini LED lamp with improved surface uniformity of the present application.
[0019] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the drawings. DETAILED DESCRIPTION
[0020] The specific embodiments of the present application will be described in detail below with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the description of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.
[0021] In the description of the present application, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.
[0022] The terms "up", "down", "left", "right", "front", "back", "top", "bottom", "inside", "outside" and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship of the product of the present application when it is usually placed, which is only for the convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application.
[0023] The terms "first", "second", "third" and the like, merely distinguish similar elements, and do not indicate or imply relative importance or particular order.
[0024] The term "comprises", "comprising", or any other variation thereof, is intended to cover a non-exclusive inclusion, in addition to the listed elements, and can also include other elements not expressly listed.
[0025] As shown in Figs. 1 to 3 The vehicle-mounted backlight module of the mini LED lamp with improved surface uniformity includes a lower frame 11, a reflection plate 12, a first reflection strip 13 and a second reflection strip 14. The lower frame 11 includes a bottom plate 111 and a side frame 112, and a containing cavity is formed between the bottom plate 111 and the side frame 112. The reflection plate 12 is arranged in the containing cavity. The bottom plate 111 is fixedly connected with a support beam 113, which is arranged circumferentially around the bottom plate 111 and is arranged in the containing cavity. The first reflection strip 13 is arranged on the support beam 113, and the second reflection strip 14 is connected to the side of the reflection plate 12, and the reflection plate 12 is arranged on the first reflection strip 13. The shape of the support beam 113 matches the shape of the edge of the reflection plate 12. The arrangement of the first reflection strip 13 and the second reflection strip 14 can improve the pass rate of the vehicle rigorous reliability experiment, improve the product stability, improve the surface uniformity by more than 80%, and optimize the visual effect.
[0026] The vehicle-mounted backlight module of the present application sets the first reflection strip 13 on the support beam 113 and sets the second reflection strip 14 on the side of the reflection plate 12, which can optimize the visual effect of the vehicle-mounted backlight module, prevent the abnormal darkening around the visual effect, and not only has a stable structure and high reliability, but also can improve the pass rate of the most rigorous terminal vehicle enterprise "three comprehensive vibration" experiment, save costs, reduce product processing time, and reduce the cost of opening molds for various jigs.
[0027] Preferably, the support beam 113 is provided with a support surface 1131, which is arranged at one end of the support beam 113 away from the bottom plate 111, and the first reflection strip 13 is connected to the support surface 1131.
[0028] Preferably, the thickness of the first reflection strip 13 is 0.06mm~0.09mm, preferably 0.06mm, 0.07mm, 0.08mm or 0.09mm, etc., and for example, 0.08mm, the first reflection strip 13 includes a first reflection layer and a first adhesive layer, the first reflection layer is 0.07mm, and the first adhesive layer is 0.01mm; the thickness of the second reflection strip 14 is 0.06mm~0.09mm, preferably 0.06mm, 0.07mm, 0.08mm or 0.09mm, etc., and for example, 0.08mm, the second reflection strip 14 includes a second reflection layer and a second adhesive layer, the second reflection layer is 0.07mm, and the second adhesive layer is 0.01mm.
[0029] Preferably, the side frame 112 comprises a first side plate and a second side plate arranged oppositely, and a third side plate and a fourth side plate arranged oppositely, the first side plate and the second side plate are fixedly connected to the third side plate and the fourth side plate respectively, the support beam 113 comprises a first support plate and a second support plate arranged oppositely, and a third support plate and a fourth support plate arranged oppositely, the first support plate and the second support plate are connected to or abut against the third support plate and the fourth support plate respectively, the first side plate is arranged correspondingly to the first support plate, the second side plate is arranged correspondingly to the second support plate, the third side plate is arranged correspondingly to the third support plate, and the fourth side plate is arranged correspondingly to the fourth support plate.
[0030] Preferably, the vehicle-mounted backlight module of the mini LED lamp with improved surface uniformity further comprises a light bar 15, and the light bar 15 is fixedly connected to the lower frame 11. Specifically, the light bar 15 is preferably plate-shaped or strip-shaped, and the light bar 15 is arranged on the bottom plate 111 or the first side plate. The distance between the first support beam 113 and the light bar 15 is 4mm-5mm, preferably 4mm, 4.5mm or 5mm, etc.
[0031] Preferably, the light bar 15 comprises a plurality of mini LED lamps and a COB substrate, each mini LED lamp is electrically connected to the COB substrate, and the distance between the support surface 1131 and the upper surface of the mini LED lamp is 4mm-5mm, preferably 4mm, 4.5mm or 5mm, etc.
[0032] Preferably, the vehicle-mounted backlight module of the mini LED lamp with improved surface uniformity further comprises a light guide plate and an optical film. The light guide plate is arranged on the reflecting plate 12, and the optical film is arranged on the light guide plate. The optical film comprises a diffusion film, a light enhancement film and a brightness enhancement film. The diffusion film is connected to the light guide plate, the light enhancement film is connected to the diffusion film, and the brightness enhancement film is connected to the light enhancement film. The diffusion film, the light enhancement film and the brightness enhancement film can be fixedly connected by means of double-sided adhesive tape.
[0033] Preferably, the vehicle-mounted backlight module of the mini LED lamp with improved surface uniformity further comprises a middle frame and foam adhesive. The middle frame is connected to the lower frame 11, and the foam adhesive is used to connect the display screen to the middle frame. The foam adhesive is used to buffer and fix the display screen.
[0034] The utility model also relates to a kind of vehicle-mounted display device, including the vehicle-mounted backlight module of the mini LED lamp with improved surface uniformity described above. Vehicle-mounted display device is for example high-end vehicle-mounted instrument, vehicle-mounted central control display, vehicle-mounted driving recorder, vehicle-mounted DVD navigation, vehicle-mounted driving station integrated display screen, vehicle-mounted streaming media rearview mirror, car seat headrest display or industrial control medical equipment, but not limited to this.
[0035] The above merely illustrates the specific implementation manners of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.
Claims
1. A vehicle-mounted backlight module of a mini LED lamp for improving surface uniformity, characterized in that, The mini LED lamp vehicle-mounted backlight module for improving surface uniformity comprises a lower frame (11), a reflection plate (12), a first reflection strip (13) and a second reflection strip (14), the lower frame (11) comprises a bottom plate (111) and a side frame (112), a containing cavity is formed between the bottom plate (111) and the side frame (112), the reflection plate (12) is arranged in the containing cavity, the bottom plate (111) is fixedly connected with a support beam (113), the support beam (113) is arranged around the bottom plate (111) in a circumferential direction, the support beam (113) is arranged in the containing cavity, the first reflection strip (13) is arranged on the support beam (113), and the second reflection strip (14) is connected to a side of the reflection plate (12).
2. The vehicle-mounted backlight module of the mini LED lamp for improving surface uniformity according to claim 1, wherein, The support beam (113) is provided with a support surface (1131), the support surface (1131) is arranged at one end of the support beam (113) away from the bottom plate (111), and the first reflection strip (13) is connected to the support surface (1131).
3. The vehicle-mounted backlight module of the mini LED lamp for improving surface uniformity according to claim 2, wherein, The thickness of the first reflection strip (13) is 0.06mm-0.09mm, and the thickness of the second reflection strip (14) is 0.06mm-0.09mm.
4. The vehicle-mounted backlight module of the mini LED lamp for improving surface uniformity according to claim 2, wherein, The side frame (112) and the support beam (113) are arranged in a spaced manner. 5.The vehicle-mounted backlight module of the mini LED lamp with improved surface uniformity of claim 2, wherein, The side frame (112) comprises oppositely arranged first and second side plates and oppositely arranged third and fourth side plates, the first and second side plates are fixedly connected to the third and fourth side plates respectively, the support beam (113) comprises oppositely arranged first and second support plates and oppositely arranged third and fourth support plates, the first and second support plates are connected to or abut against the third and fourth support plates respectively, the first side plate is arranged in correspondence with the first support plate, the second side plate is arranged in correspondence with the second support plate, the third side plate is arranged in correspondence with the third support plate, and the fourth side plate is arranged in correspondence with the fourth support plate.
6. The vehicle-mounted backlight module of the mini LED lamp for improving surface uniformity according to claim 5, wherein, The mini LED lamp vehicle-mounted backlight module for improving surface uniformity further comprises a light bar (15), the light bar (15) is connected to the lower frame (11), and the distance between the first support plate and the light bar (15) is 4mm-5mm.
7. The vehicle-mounted backlight module for improving the surface uniformity of the mini LED lamp according to claim 6, wherein, The light bar (15) comprises a plurality of mini LED lamps and a COB substrate, each mini LED lamp is electrically connected to the COB substrate, and the distance between the support surface (1131) and the upper surface of the mini LED lamp is 4mm-5mm. 8.The vehicle-mounted backlight module of the mini LED lamp with improved surface uniformity of claim 2, wherein, The shape of the support beam (113) matches the shape of the edge of the reflection plate (12).
9. The vehicle-mounted backlight module of the mini LED lamp for improving surface uniformity according to any one of claims 1 to 8, characterized in that, The mini LED lamp vehicle-mounted backlight module for improving surface uniformity further comprises a light guide plate and an optical film, the light guide plate is arranged on the reflection plate (12), and the optical film is arranged on the light guide plate.
10. A display device for a vehicle, characterized by comprising: The mini LED lamp vehicle-mounted backlight module for improving surface uniformity comprises any one of claims 1 to 9.