Shrink-resistant rubber frame and backlight module
By designing a shrink-resistant backlight housing with a cuboid structure and cutout design, the difficulties in LCD assembly and stress mura caused by shrinkage of the backlight housing were solved, achieving higher assembly precision and reliability.
Patent Information
- Application Number
- CN202422864539.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2034-11-22
AI Technical Summary
The backlight housing in the automotive LCM LCD display module is prone to shrinkage during the manufacturing process, which can cause the LCD to fail to assemble properly or deform and squeeze the LCD under high and low temperature conditions, resulting in stress mura light leakage problems.
Design a shrinkage-resistant rubber frame with a rectangular support plate and an enclosure frame. The enclosure frame includes first and second enclosure plates, with cutouts to absorb shrinkage deformation and reduce material usage. It also takes advantage of the thermal expansion and contraction properties of rubber to mitigate the effects of shrinkage.
It effectively reduces the shrinkage of the plastic frame, avoids stress mura problems caused by improper LCD assembly and compression, and improves assembly accuracy and reliability.
Smart Images

Figure CN223808614U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the backlight field especially relates to a kind of waterproof glue frame and backlight module. BACKGROUND
[0002] Vehicle-mounted LCM liquid crystal display module conventional structure mode is to place LCD in backlight, is fixed by the glue frame of the rise around backlight and protects LCD.But backlight glue frame in the process of making formation, glue frame can appear shrinkage phenomenon, size is bigger, shrinkage phenomenon is more obvious, leading to LCD and backlight assembly appear not to go in, or go in after, in doing high-low temperature environmental reliability test, glue frame appears slight deformation and leads to LCD to be pressed, appears stress mura light leakage problem. SUMMARY
[0003] The utility model discloses a kind of waterproof glue frame and backlight module, to overcome the deficiency in prior art.
[0004] The utility model discloses a kind of waterproof glue frame and backlight module, to overcome the deficiency in prior art.
[0005] A kind of waterproof glue frame, comprising: bearing plate and the surrounding frame connected on the bearing plate, the bearing plate is cuboid structure;The surrounding frame includes first surrounding plate and second surrounding plate, the first surrounding plate and the second surrounding plate are arranged at the edge of the same face of the bearing plate, and the first surrounding plate and the second surrounding plate are respectively arranged at the opposite sides of the bearing plate.
[0006] In one embodiment, at least one cutout is provided on the first surrounding plate, and the cutout is opened from the side of the surrounding frame away from the bearing plate towards the bearing plate.
[0007] In one embodiment, the width of the cutout is 1.5mm.
[0008] In one embodiment, the bearing plate is provided with an LCD mounting groove on one side of the surrounding frame.
[0009] In one embodiment, the length of the surrounding frame from the LCD mounting groove is 0.15-0.2mm.
[0010] In one embodiment, the number of cutouts is three, and the cutouts are arranged at intervals.
[0011] In one embodiment, the thickness of the first surrounding plate and the second surrounding plate is 3.0mm.
[0012] In one embodiment, the first surrounding plate and the second surrounding plate are perpendicular to one side of the bearing plate.
[0013] In one embodiment, the edges of the surrounding frame are aligned with the edges of the carrier plate.
[0014] A backlight module comprising the waterproofed glue frame.
[0015] Compared with the prior art, the waterproofed glue frame has at least the following advantages:
[0016] The waterproofed glue frame comprises a carrier plate and a surrounding frame connected to the carrier plate, wherein the carrier plate has a cuboid structure, and the surrounding frame comprises a first surrounding plate and a second surrounding plate, which are arranged at the edges of the same face of the carrier plate and are respectively arranged at opposite sides of the carrier plate. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows.
[0018] Figure 1 FIG. 1 is a front view of the waterproofed glue frame according to an embodiment of the present application.
[0019] Reference signs:
[0020] Carrier plate 10, LCD mounting groove 11, surrounding frame 20, first surrounding plate 21, second surrounding plate 22, cutout 23, stop block 30. DETAILED DESCRIPTION
[0021] In order to facilitate the understanding of the present application, the present application will be described more fully with reference to the related drawings.
[0022] The present application provides a waterproofed glue frame, please refer to Figure 1The application relates to a rubber frame, which comprises a bearing plate 10 and a surrounding frame 20 connected to the bearing plate 10, the bearing plate 10 is in a cuboid structure and is matched with the shape of an LCD, thus providing an extreme viewing experience for users, therefore, the bearing plate 10 has four sides. The surrounding frame 20 comprises a first surrounding plate 21 and a second surrounding plate 22, the first surrounding plate 21 and the second surrounding plate 22 are arranged at the edges of the same side of the bearing plate 10, and the first surrounding plate 21 and the second surrounding plate 22 are arranged at opposite sides of the bearing plate 10 respectively, when the rubber frame is subjected to a transverse impact, the surrounding frame 20 can provide certain support and protect the LCD inside. Compared with the prior art, the rubber frame of the application is not provided with surrounding plates at the two sides of the bearing plate 10 except the two sides where the first surrounding plate 21 and the second surrounding plate 22 are arranged, that is, the first surrounding plate 21 and the second surrounding plate 22 are arranged at two sides of the bearing plate 10 which are not adjacent to each other, and the other two sides are not provided with surrounding plates for surrounding the LCD, thus reducing the use material of the rubber frame, weakening the shrinkage degree of the rubber frame, improving the shrinkage problem of the anti-shrinkage rubber frame, avoiding that the LCD cannot be normally assembled into the backlight or causing stress mura problem of the LCD due to the extrusion of the rubber frame.
[0023] It should be noted that the bearing plate 10 and the surrounding frame 20 of the rubber frame are made of rubber, the effect of thermal expansion and cold contraction of the rubber is remarkable, therefore, it is very important to weaken the influence caused by shrinkage. The area of the rubber frame is reduced in the application, so as to reduce the shrinkage phenomenon of the rubber frame in the process of processing and forming, weaken the influence caused by the shrinkage of the rubber frame due to temperature, and avoid the stress mura light leakage of the LCD due to the extrusion of the rubber frame.
[0024] In an embodiment, the two ends of the first surrounding plate 21 extend towards the direction of the second surrounding plate 22 and extend out the stoppers 30, the stoppers 30 are used for surrounding the LCD, so as to better limit and protect the LCD. Similarly, the two ends of the second surrounding plate 22 extend towards the direction of the first surrounding plate 21 and extend out the stoppers 30.
[0025] Please refer to Figure 1 The first surrounding plate 21 is provided with at least one cutout 23, the cutout 23 is arranged in the direction away from the bearing plate 10 from the side of the surrounding frame 20. The cutout 23 can absorb the shrinkage deformation of the surrounding frame 20 to a certain extent, the stress caused by the shrinkage does not affect the bearing plate 10, and the shrinkage deformation of the bearing plate 10 and the surrounding frame 20 is further reduced. Meanwhile, the second surrounding plate 22 is also provided with the cutout 23.
[0026] Preferably, the width of the cutout 23 is 1.5 mm.
[0027] Further, the number of the cutout 23 is three, the cutouts 23 are arranged at intervals, the stress caused by the shrinkage of the surrounding frame 20 can be weakened, and the shrinkage deformation of the bearing plate 10 and the surrounding frame 20 is further reduced.
[0028] Further, the bearing plate 10 is provided with an LCD mounting groove 11 on one side of the surrounding frame 20, the LCD mounting groove 11 is used for mounting the LCD, the LCD is limited to be placed on the LCD mounting groove 11, and the precision of mounting the LCD is improved.
[0029] In an embodiment, the length of the surrounding frame 20 from the LCD mounting groove 11 is 0.15-0.2 mm, the LCD will not be skewed by the staff, and the working performance of the LCD and the installation of other parts are avoided.
[0030] Further, the thickness of the first surrounding plate 21 and the second surrounding plate 22 is 3.0 mm, if the thickness is greater than 3.0 mm, the shrinkage is serious, the deformation of the glue frame is large, and the glue frame is not suitable for the installation of the LCD. If the thickness is less than 3.0 mm, the supporting degree of the first surrounding plate 21 and the second surrounding plate 22 is not enough, and it is difficult to surround and accommodate the LCD.
[0031] Preferably, the first surrounding plate 21 and the second surrounding plate 22 are perpendicular to one side of the bearing plate 10, which facilitates the installation of the LCD.
[0032] In addition, the edges of the surrounding frame 20 are aligned with the edges of the bearing plate 10, so that the bearing plate 10 and the surrounding frame 20 are smoothly connected, and the material of the bearing plate 10 is avoided to be wasted. The least material is used under the condition of ensuring the quality, and the LCD and the backlight are installed in the LCD mounting groove 11 space.
[0033] The application also provides a backlight module, which comprises the anti-shrinking glue frame, and is used for protecting the LCD. Two sides of the bearing plate 10 of the anti-shrinking glue frame are respectively provided with the first surrounding plate 21 and the second surrounding plate 22, and the other two sides are not provided with surrounding plates to surround the LCD, so that the use material of the glue frame is reduced, the shrinkage degree of the glue frame is weakened, the shrinkage problem of the anti-shrinking glue frame is improved, the LCD cannot be normally assembled into the backlight, or the stress mura problem of the LCD caused by the glue frame extruding the LCD is avoided, and the LCD is not good.
[0034] The above embodiments only express several embodiments of the present application, the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the application patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the application patent should be subject to the appended claims.
Claims
1. A shrink resistant hanger, characterized by, The application relates to a waterproof frame, which comprises a bearing plate and a surrounding frame connected to the bearing plate, wherein the bearing plate is a cuboid structure; the surrounding frame comprises a first surrounding plate and a second surrounding plate, the first surrounding plate and the second surrounding plate are arranged at edges of the same face of the bearing plate, and the first surrounding plate and the second surrounding plate are respectively arranged at opposite sides of the bearing plate. At least one cutout is arranged on the first surrounding plate, and the cutout is arranged from a side of the surrounding frame away from the bearing plate to the bearing plate.
2. The shrink resistant glue frame of claim 1, wherein, The width of the cutout is 1.5 mm.
3. The shrink resistant glue frame of claim 2, wherein, An LCD mounting groove is arranged on one face of the bearing plate.
4. The shrink resistant glue frame of claim 1, wherein, The length of the surrounding frame from the LCD mounting groove is 0.15-0.2 mm.
5. The shrink resistant glue frame of claim 4, wherein, The number of the cutouts is three, and the cutouts are arranged at intervals.
6. The shrink resistant sleeve of claim 2, wherein, The thickness of the first surrounding plate and the second surrounding plate is 3.0 mm.
7. The shrink resistant sleeve of claim 1, wherein, The first surrounding plate and the second surrounding plate are perpendicular to one face of the bearing plate.
8. The shrink resistant sleeve of claim 1, wherein, The edges of the surrounding frame are arranged in alignment with the edges of the bearing plate.
9. The shrink resistant sleeve of claim 1, wherein, The waterproof frame is used in the waterproof frame of any one of claims 1-9.
10. A backlight module, characterized in that,