Display screen backlight module structure and vehicle-mounted display device

Abstract

The utility model discloses a display screen backlight module structure and a vehicle-mounted display device, and relates to the field of vehicle-mounted display devices.The display screen backlight module structure comprises an aluminum casting rear frame, a backlight module and a TLI attaching assembly, a fast-curing hot melt adhesive is arranged on the portion, located on the periphery of the backlight module, of the front face of the aluminum casting rear frame, RTV glue is arranged on the front face of the aluminum casting rear frame, the extending path of the RTV glue is consistent with the peripheral shape of the aluminum casting rear frame, the hot melt adhesive is used for bonding and positioning the TLI attaching assembly, and the RTV glue is used for bonding and fixing the TLI attaching assembly; according to the hot melt adhesive dispensing device, the dispensing amount of hot melt adhesive can be freely adjusted according to the actual situation, cutting, film tearing and alignment of double-sided adhesive are not needed, the TLI attaching assembly is fixed in the mode that the hot melt adhesive and RTV adhesive are combined, the pressure maintaining time of the TLI attaching assembly is saved, the installation efficiency of the TLI attaching assembly is improved, and then the production efficiency of the vehicle-mounted display device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle-mounted display devices, in particular to a display screen backlight module structure and a vehicle-mounted display device. Background Art

[0002] Now more and more automotive display modules are installed on cars by assembling touch display modules with castings, and castings can provide higher strength. The traditional casting assembly process generally uses RTV glue for dispensing and then bonding and pressure holding. Each sample needs to be pressurized for more than 2 hours. The long pressure holding time reduces production efficiency. There is also a process using double-sided adhesive + RTV glue. The pressure holding time is generally 10 minutes, but the double-sided adhesive needs to be die-cut in advance, and then aligned and bonded. The process flow is too complicated. For example, patent application No. 202222438249.3 discloses a display backlight module and a vehicle-mounted display device, which includes a middle iron frame, an aluminum casting rear frame and a TLI bonding component. A double-sided adhesive is provided between the middle iron frame and the aluminum casting rear frame, and the double-sided adhesive bonds the middle iron frame to the aluminum casting rear frame; a height limit support block, RTV glue and 3MVHB double-sided adhesive are provided on the front surface of the aluminum casting rear frame. The height limit support block is used to prevent RTV glue from overflowing, and RTV glue and 3M VHB double-sided adhesive are used to bond the TLI bonding component. 3M The combination of VHB double-sided adhesive and RTV adhesive is used to bond and fix the TLI laminating components. Double-sided adhesive is used for preliminary fixation first, which can save the time of pressure holding. However, double-sided adhesive needs to be cut and aligned, and the area of ​​double-sided adhesive is relatively small, which makes it difficult to tear the film, and also affects the production efficiency. Therefore, the utility model discloses a display screen backlight module structure and a vehicle-mounted display device to solve the above problems. Utility Model Content

[0003] Based on this, it is necessary to provide a display backlight module structure and a vehicle-mounted display device to address the above technical problems. Hot melt glue is applied to the front of the aluminum casting rear frame to pre-bond and fix the TLI bonding component, and then the TLI bonding component is bonded and fixed to the aluminum casting rear frame using RTV glue. This allows for free adjustment of the amount of hot melt glue applied according to actual conditions, and does not require double-sided adhesive cutting, film tearing and alignment. The TLI bonding component is fixed using a combination of hot melt glue and RTV glue, which saves the holding time of the TLI bonding component. The TLI bonding component can be directly bonded after the hot melt glue is applied, which improves the installation efficiency of the TLI bonding component, thereby improving the production efficiency of the vehicle-mounted display device.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A display screen backlight module structure comprises an aluminum casting rear frame, a backlight module and a TLI bonding component. The backlight module is bonded and fixed to the aluminum casting rear frame. A fast-curing hot melt adhesive is arranged on the front side of the aluminum casting rear frame and located at the periphery of the backlight module. RTV adhesive is also arranged on the front side of the aluminum casting rear frame. The extension path of the RTV adhesive is consistent with the peripheral shape of the aluminum casting rear frame. The hot melt adhesive is used to bond and position the TLI bonding component. The RTV adhesive is used to bond and fix the TLI bonding component.

[0006] As a preferred embodiment of the display screen backlight module structure provided by the utility model, a limiting frame is arranged on the front outer edge of the aluminum casting rear frame, and the limiting frame is used to shield the RTV glue to prevent the RTV glue from overflowing.

[0007] As a preferred implementation of the display backlight module structure provided by the utility model, the inner wall size of the limiting frame is consistent with the extension path of the RTV glue, and the height of the limiting frame is greater than the outer edge thickness of the TLI bonding component by 0.2-0.5mm.

[0008] As a preferred implementation of the display screen backlight module structure provided by the utility model, after the TLI laminating component is bonded and fixed to the aluminum casting rear frame, the upper surface of the TLI laminating component is flush with the upper surface of the limiting frame.

[0009] As a preferred implementation of the display screen backlight module structure provided by the utility model, the backlight module comprises a middle iron frame, and the middle iron frame is bonded and fixed to the aluminum casting rear frame by double-sided adhesive.

[0010] As a preferred implementation of the display screen backlight module structure provided by the utility model, a raised frame is arranged on the front of the aluminum casting rear frame, and the hot melt adhesive is arranged in the raised frame.

[0011] As a preferred implementation of the display screen backlight module structure provided by the utility model, the height of the raised frame is 0.5mm-0.8mm.

[0012] As a preferred implementation of the display screen backlight module structure provided by the utility model, a flexible surrounding frame is provided on the top surface of the raised frame, and the height of the flexible surrounding frame is 0.2-0.5 mm.

[0013] As a preferred implementation of the display screen backlight module structure provided by the utility model, the flexible surrounding frame is a sponge frame, and the flexible surrounding frame and the raised frame are bonded and fixed by using quick-drying glue.

[0014] The utility model also provides a vehicle-mounted display device, which comprises the above-mentioned display screen backlight module structure.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The display screen backlight module structure and the vehicle-mounted display device provided by the utility model pre-bond and fix the TLI bonding component by applying hot melt glue on the front side of the aluminum casting rear frame, and then bond and fix the TLI bonding component to the aluminum casting rear frame by using RTV glue, so that the amount of hot melt glue applied can be freely adjusted according to actual conditions, and there is no need for double-sided adhesive cutting, film tearing and alignment. The TLI bonding component is fixed by a combination of hot melt glue and RTV glue, which saves the pressure holding time of the TLI bonding component. After the hot melt glue is applied, the TLI bonding component can be directly bonded, thereby improving the installation efficiency of the TLI bonding component, thereby improving the production efficiency of the vehicle-mounted display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the scheme in the utility model, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a front plan view of the display screen backlight module structure provided by the utility model;

[0019] Figure 2 for Figure 1 The enlarged schematic diagram at A in the middle;

[0020] Figure 3 for Figure 2 Schematic diagram of a partial cross section.

[0021] The markings in the figure are as follows:

[0022] 1. Aluminum casting back frame; 2. Backlight module; 3. Hot melt adhesive; 4. RTV adhesive; 5. Limiting frame; 6. Plastic decorative parts; 7. Raised frame; 8. Flexible frame. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0024] As described in the background technology, the traditional casting assembly process generally uses RTV glue for dispensing and then bonding and pressure holding. The pressure holding time is long, which reduces production efficiency. There is also a process that uses double-sided adhesive + RTV adhesive. Double-sided adhesive is first used for preliminary fixation, which can save pressure holding time. However, double-sided adhesive requires cutting and alignment, and the area of ​​double-sided adhesive is relatively small, making it difficult to tear the film, which will also affect production efficiency.

[0025] In order to solve this technical problem, the utility model provides a display screen backlight module structure and a vehicle-mounted display device, which are applied to the field of vehicle-mounted display devices.

[0026] Specifically, please refer to Figure 1-3 The structure of the display backlight module 2 specifically includes an aluminum casting rear frame 1, a backlight module 2 and a TLI bonding component. The backlight module 2 is bonded and fixed to the aluminum casting rear frame 1. The front of the aluminum casting rear frame 1 is located at the periphery of the backlight module 2 and is provided with a fast-curing hot melt adhesive 3, and the front of the aluminum casting rear frame 1 is provided with an RTV adhesive 4. The extension path of the RTV adhesive 4 is consistent with the outer shape of the aluminum casting rear frame 1. The hot melt adhesive 3 is used to bond and position the TLI bonding component, and the RTV adhesive 4 is used to bond and fix the TLI bonding component.

[0027] In order to solve the technical problem in the background, the utility model also provides a vehicle-mounted display device, which includes the above-mentioned display screen backlight module 2 structure.

[0028] The display screen backlight module 2 structure and the vehicle-mounted display device provided by the utility model pre-bond and fix the TLI bonding component by applying hot melt glue 3 on the front side of the aluminum casting rear frame 1, and then bond and fix the TLI bonding component to the aluminum casting rear frame 1 by using RTV glue 4, so that the glue amount of the hot melt glue 3 can be freely adjusted according to actual conditions, and there is no need for double-sided adhesive cutting, film tearing and alignment. The TLI bonding component is fixed by combining the hot melt glue 3 and the RTV glue 4, which saves the pressure holding time of the TLI bonding component. After applying the hot melt glue 3, the TLI bonding component can be directly bonded, which improves the installation efficiency of the TLI bonding component, thereby improving the production efficiency of the vehicle-mounted display device.

[0029] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0030] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0032] Example 1

[0033] Please refer to Figure 1-3 , a display screen backlight module 2 structure is provided, which includes an aluminum casting rear frame 1, a backlight module 2 and a TLI bonding component, the backlight module 2 is bonded and fixed to the aluminum casting rear frame 1, the front of the aluminum casting rear frame 1 is located at the periphery of the backlight module 2 and is provided with a fast-curing hot melt adhesive 3, and the front of the aluminum casting rear frame 1 is provided with an RTV adhesive 4, the extension path of the RTV adhesive 4 is consistent with the outer shape of the aluminum casting rear frame 1, the fast-curing hot melt adhesive 3 is used to bond and position the TLI bonding component, and the RTV adhesive 4 is used to bond and fix the TLI bonding component. The TLI bonding component is an existing structure and is not described separately here.

[0034] A limiting frame 5 is set on the outer edge of the front side of the aluminum casting rear frame 1, and the limiting frame 5 is set along the outer curve of the aluminum casting rear frame 1. The space enclosed by the limiting frame 5 is used to place the TLI fitting component to facilitate the positioning and installation of the TLI fitting component. After the TLI fitting component is installed on the aluminum casting rear frame 1, the gap between the periphery of the TLI fitting component and the limiting frame 5 is 0.1-0.3mm, and the limiting frame 5 can also be used to block the RTV glue 4 to prevent the RTV glue 4 from overflowing.

[0035] In addition, the inner wall size of the limiting frame 5 is consistent with the extension path of the RTV glue 4, and the height of the limiting frame 5 is greater than the outer edge thickness of the TLI bonding component by 0.2-0.5mm. After the TLI bonding component is bonded and fixed to the aluminum casting rear frame 1, the upper surface of the TLI bonding component is flush with the upper surface of the limiting frame 5, which improves the appearance. In addition, RTV glue 4 is additionally added at the key positions of the TLI bonding component on both sides of the backlight module 2, and the path of the RTV glue 4 is set according to the key bonding position.

[0036] The backlight module 2 includes a middle iron frame, which is bonded and fixed to the aluminum casting rear frame 1 by double-sided adhesive, so as to fix the backlight module 2 on the aluminum casting. At the same time, a accommodating cavity is formed between the middle iron frame and the aluminum casting rear frame 1. A reflective film and a light guide plate are provided in the accommodating cavity. The accommodating cavity also includes an optical film, which includes a light-enhancing film and a brightness-enhancing film. The brightness-enhancing film is provided on the light-enhancing film. The above optical films, reflective films and light guide plates cooperate with the middle iron frame to form the backlight module 2.

[0037] Of course, in order to improve the aesthetics, a plastic decorative piece 6 is also arranged around the periphery of the aluminum casting rear frame 1 . The plastic decorative piece 6 is arranged around the periphery of the aluminum casting rear frame 1 and is bonded and fixed to the aluminum casting rear frame 1 .

[0038] The display screen backlight module 2 structure provided by the utility model has a hot melt adhesive 3 on the front side of the aluminum casting rear frame 1 to pre-bond and fix the TLI bonding component, and then uses RTV adhesive 4 to bond and fix the TLI bonding component to the aluminum casting rear frame 1, so that the amount of hot melt adhesive 3 dispensed can be freely adjusted according to actual conditions, and there is no need for double-sided adhesive cutting, film tearing and alignment. The TLI bonding component is fixed by a combination of hot melt adhesive 3 and RTV adhesive 4, which saves the pressure holding time of the TLI bonding component. After the hot melt adhesive 3 is applied, the TLI bonding component can be directly bonded, thereby improving the installation efficiency of the TLI bonding component, thereby improving the production efficiency of the vehicle-mounted display device.

[0039] Example 2

[0040] The structure of the display screen backlight module 2 provided in Example 1 is further optimized. Specifically, Figure 1-3 As shown, a raised frame 7 is provided on the front of the aluminum casting rear frame 1, and the hot melt adhesive 3 is provided in the raised frame 7. In this example, six raised frames 7 are provided, and two are provided on the blank areas on both sides of the backlight module 2 of the aluminum casting rear frame 1, and two are provided on the upper side of the aluminum casting rear frame 1. The raised frame 7 is provided at the key bonding position of the aluminum casting rear frame 1 to the TLI bonding component. The raised frame 7 can be used to wrap the hot melt adhesive 3 to prevent the hot melt adhesive 3 from flowing, increasing the usage and causing waste, and the height of the raised frame 7 is 0. 5mm-0.8mm, and a flexible enclosure 8 is provided on the top surface of the raised frame 7, and the height of the flexible enclosure 8 is 0.2-0.5mm. The hot melt adhesive 3 is flexibly supported by the flexible enclosure 8 to avoid the raised frame 7 from causing support damage to the TLI bonding component. The setting of the flexible enclosure 8 can also increase the storage capacity of the hot melt adhesive 3. When the TLI bonding component is pressed down, the flexible enclosure 8 can be deformed, so that the hot melt adhesive 3 is fully in contact with the TLI bonding component to improve the bonding strength. Preferably, the flexible enclosure 8 is a sponge frame, and the flexible enclosure 8 and the raised frame 7 are bonded and fixed with quick-drying glue. The sponge frame can absorb the hot melt adhesive 3 to a certain extent. After the hot melt adhesive 3 is cured, the sponge frame can also reach a certain strength, thereby achieving support for the TLI bonding component.

[0041] Example 3

[0042] This embodiment provides a vehicle-mounted display device, which includes a display screen backlight module 2 structure as in Embodiment 1 and Embodiment 2. The vehicle-mounted display device can be a vehicle-mounted driving recorder, a vehicle-mounted DVD navigation, a high-end vehicle-mounted instrument, a vehicle-mounted integrated dashboard display, a vehicle-mounted central control display, a vehicle-mounted streaming media rearview mirror or a car seat headrest display, but is not limited to this.

[0043] The working principle of the display screen backlight module 2 structure and the vehicle-mounted display device provided by the utility model is as follows: firstly, double-sided adhesive is bonded to the front of the aluminum casting rear frame 1, and then the backlight module 2 is bonded and fixed to the aluminum casting rear frame 1, and then a circle of RTV glue 4 is applied along the front of the aluminum casting rear frame 1, and then the hot melt glue 3 that cures quickly is applied to the position of the raised frame 7, and finally the TLI bonding component is bonded to the aluminum casting rear frame 1, and the pressure is maintained for about 10 minutes. The open time of the hot melt glue 3 is 1 to 3 minutes. The TLI bonding component can be positioned and fixed by maintaining the pressure for 10 minutes, and the RTV glue 4 is solidified later to achieve bonding and fixing of the four sides of the TLI bonding component. This method can directly bond, greatly reduces the process flow, saves the pressure holding time of the TLI bonding component, improves the installation efficiency of the TLI bonding component, and thus improves the production efficiency of the vehicle-mounted display device.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. A display screen backlight module structure, comprising an aluminum casting rear frame, a backlight module and a TLI bonding component, wherein the backlight module is bonded and fixed to the aluminum casting rear frame, characterized in that: The front of the aluminum casting rear frame is located on the periphery of the backlight module and is provided with fast-curing hot melt adhesive, and the front of the aluminum casting rear frame is provided with RTV adhesive, the extension path of the RTV adhesive is consistent with the outer shape of the aluminum casting rear frame, the hot melt adhesive is used to bond and position the TLI bonding component, and the RTV adhesive is used to bond and fix the TLI bonding component.

2. A display screen backlight module structure according to claim 1, characterized in that: A limiting frame is arranged on the outer edge of the front side of the rear frame of the aluminum casting, and the limiting frame is used to shield the RTV glue.

3. A display screen backlight module structure according to claim 2, characterized in that: The inner wall size of the limiting frame is consistent with the extension path of the RTV glue, and the height of the limiting frame is 0.2-0.5mm greater than the thickness of the outer edge of the TLI bonding component.

4. A display screen backlight module structure according to claim 3, characterized in that: After the TLI laminating assembly is bonded and fixed to the aluminum casting rear frame, the upper surface of the TLI laminating assembly is flush with the upper surface of the limiting surrounding frame.

5. The display screen backlight module structure according to claim 1, characterized in that: The backlight module comprises a middle iron frame, and the middle iron frame is bonded and fixed to the aluminum casting rear frame by double-sided adhesive.

6. The display screen backlight module structure according to claim 1, characterized in that: A protruding frame is arranged on the front of the aluminum casting rear frame, and the hot melt adhesive is arranged in the protruding frame.

7. A display screen backlight module structure according to claim 6, characterized in that: The height of the raised frame is 0.5mm-0.8mm.

8. The display screen backlight module structure according to claim 6, characterized in that: A flexible surrounding frame is arranged on the top surface of the raised frame, and the height of the flexible surrounding frame is 0.2-0.5 mm.

9. A display screen backlight module structure according to claim 8, characterized in that: The flexible surrounding frame is a sponge frame, and the flexible surrounding frame and the raised frame are bonded and fixed by using quick-drying glue.

10. A vehicle-mounted display device, characterized in that: It comprises the display screen backlight module structure as described in any one of claims 1 to 9.

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