Mounting structure of backlight diaphragm
By designing a backlight diaphragm mounting structure with a position avoidance area in the vehicle backlight system, the bright line and wrinkle problems of the viewing area caused by thermal expansion and contraction of the optical film are solved, ensuring the stability and optical performance of the system.
Patent Information
- Application Number
- CN202420804122.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-17
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-04-17
AI Technical Summary
In vehicle-mounted backlight systems, as the frame requirements of LCD screen modules become narrower and narrower, the optical film causes bright lines in the viewing area or folds of the optical film due to thermal expansion and contraction.
A backlight diaphragm installation structure is designed, by setting an avoidance area on the casting, one end of the optical film is fixed and the other end is placed in the avoidance area, allowing the optical film to expand and contract at this end to be fixed. There will be no thermal expansion and contraction at the end, thereby solving the problem of bright lines in the viewing area and folds of optical films.
It effectively solves the bright line and wrinkle problems of the optical film due to thermal expansion and contraction, ensuring the stability and optical performance of the backlight diaphragm.
Smart Images
Figure CN222213161U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vehicle-mounted display screens, in particular to a mounting structure of a backlight film. Background Art
[0002] At present, in automotive backlights, in order to facilitate matching with the entire vehicle structure and meet the complexity of the entire vehicle structure, more and more casting structures are used in backlights.
[0003] In the related art, as the requirements for the frame of LCD screen modules become narrower and narrower, the width of the optical film covering the middle frame will become smaller and smaller, which will cause the optical film to expand and contract due to heat, resulting in bright lines in the viewing area or wrinkles in the optical film. Utility Model Content
[0004] The utility model aims to overcome the deficiencies in the prior art and provide a backlight film installation structure capable of solving the problem of bright lines in the viewing area or wrinkles in the optical film due to thermal expansion and contraction of the optical film.
[0005] The purpose of this utility model is achieved through the following technical solutions:
[0006] The first aspect of the present application provides a mounting structure for a backlight film, comprising: a casting, on which a avoidance zone is opened; a film material assembly, comprising an optical film and a light guide plate, wherein a first end of the optical film is adhered to the light guide plate, and a second end of the optical film is exposed outside the light guide plate and is located in the avoidance zone.
[0007] The optical film includes a first colloid, a first film layer and a second film layer, the first end of the first film layer is adhered to the first end of the second film layer through the first colloid, the second end of the first film layer is exposed outside the light guide plate and located in the avoidance area, and the second end of the second film layer is exposed outside the light guide plate and located in the avoidance area.
[0008] The optical film also includes a second colloid and a third film layer. The first end of the second film layer is adhered to the first end of the third film layer through the second colloid. The second end of the third film layer is exposed outside the light guide plate and is located in the avoidance area.
[0009] The optical film further includes a third colloid, and the first end of the third film layer is adhered to the light guide plate through the third colloid.
[0010] It also includes a supporting platform, which is arranged on the casting.
[0011] It also includes a middle frame, which is arranged on the supporting platform.
[0012] It also includes foam, which is arranged on the middle frame.
[0013] It also includes a double-sided adhesive tape, which is arranged on the casting.
[0014] It also includes a cover plate, which is connected to the double-sided adhesive and the foam respectively.
[0015] A reflective sheet is also included, and the reflective sheet is arranged on the bottom of the casting.
[0016] Compared with the prior art, the utility model has at least the following advantages:
[0017] By fixing one end of the optical film and placing the other end of the optical film in the avoidance area opened in the casting, the optical film placed at this end of the casting has enough space to expand and contract due to heat, while the fixed end will not expand and contract due to heat, thereby solving the problem of bright lines in the visual area or wrinkles in the optical film due to thermal expansion and contraction. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments are briefly introduced below.
[0019] Figure 1 It is a structural schematic diagram of the installation structure of the backlight film in one embodiment of the utility model. DETAILED DESCRIPTION
[0020] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.
[0021] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.
[0022] 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, or a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; 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. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0023] As the requirements for LCD screen module borders become narrower and narrower, the width of the optical film covering the middle frame will become smaller and smaller, which will cause the optical film to expand and contract due to heat, resulting in bright lines in the viewing area or wrinkles in the optical film.
[0024] In view of the above problems, the embodiments of the present application provide a backlight film installation structure, which can solve the problem of bright lines appearing in the viewing area or wrinkles on the optical film due to thermal expansion and contraction of the optical film.
[0025] The technical solution of the embodiments of the present application is described in detail below with reference to the accompanying drawings.
[0026] See also Figure 1 A backlight film installation structure includes: a casting 100 and a film material assembly 200, wherein the casting 100 is provided with an avoidance area 110; the film material assembly 200 includes an optical film 210 and a light guide plate 220, wherein a first end of the optical film 210 is adhered to the light guide plate 220, and a second end of the optical film 210 is exposed outside the light guide plate 220 and is located in the avoidance area 110.
[0027] It should be noted that the casting 100 is usually an aluminum casting. The present application fixes one end of the optical film 210 and places the other end of the optical film 210 in the avoidance area 110 opened in the casting 100, so that the optical film 210 placed at this end of the casting 100 has enough space to expand and contract due to heat, while the fixed end will not expand and contract due to heat, thereby solving the problem of bright lines in the visual area or wrinkles in the optical film 210 due to thermal expansion and contraction.
[0028] See also Figure 1In one embodiment, the optical film 210 includes a first colloid 211, a first film layer 212, and a second film layer 213. The first end of the first film layer 211 is adhered to the first end of the second film layer 213 through the first colloid 212. The second end of the first film layer 211 is exposed outside the light guide plate 220 and is located in the avoidance area 110. The second end of the second film layer 213 is exposed outside the light guide plate 220 and is located in the avoidance area 110. Specifically, the optical film 210 also includes a second colloid 214 and a third film layer 215. The first end of the second film layer 213 is adhered to the first end of the third film layer 215 through the second colloid 214. The second end of the third film layer 215 is exposed outside the light guide plate 220 and is located in the avoidance area 110. Specifically, the optical film 210 also includes a third colloid 216. The first end of the third film layer 215 is adhered to the light guide plate 220 through the third colloid 216.
[0029] It should be noted that the optical film 210 of the present application has three film layers, and every two adjacent film layers are bonded together by double-sided adhesive.
[0030] See also Figure 1 In one embodiment, the casting 100 further includes a supporting platform 300, which is disposed on the casting 100. Specifically, the casting 100 further includes a middle frame 400, which is disposed on the supporting platform 300.
[0031] It should be noted that the supporting platform 300 is used to support components such as the cover plate 700 and the middle frame 400 .
[0032] See also Figure 1 In one embodiment, the present invention further includes a foam 500, which is disposed on the middle frame 400. Specifically, the present invention further includes a double-sided adhesive 600, which is disposed on the casting 100. Specifically, the present invention further includes a cover plate 700, which is connected to the double-sided adhesive 600 and the foam 500, respectively.
[0033] It should be noted that the cover plate 700 is adhered to the casting by the foam 500 and the double-sided adhesive 600. At the same time, the foam 500 can also play a buffering role.
[0034] See also Figure 1 In one embodiment, a reflective sheet 800 is further included, and the reflective sheet 800 is disposed at the bottom of the casting 100. It should be noted that the reflective sheet 800 is used to improve the reflectivity of light.
[0035] The scheme of the present application has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of the various embodiments have their own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments. Those skilled in the art should also be aware that the actions and modules involved in the specification are not necessarily required for the present application. In addition, it can be understood that the steps in the method of the embodiment of the present application can be adjusted in order, merged and deleted according to actual needs, and the modules in the device of the embodiment of the present application can be merged, divided and deleted according to actual needs.
[0036] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the implementations disclosed herein.
Claims
1. A backlight film installation structure, characterized in that: include: A casting, wherein the casting is provided with an avoidance area; The film material assembly comprises an optical film and a light guide plate, wherein the first end of the optical film is adhered to the light guide plate, and the second end of the optical film is exposed outside the light guide plate and is located in the avoidance area.
2. The backlight film installation structure according to claim 1, characterized in that: The optical film includes a first colloid, a first film layer and a second film layer, the first end of the first film layer is adhered to the first end of the second film layer through the first colloid, the second end of the first film layer is exposed outside the light guide plate and located in the avoidance area, and the second end of the second film layer is exposed outside the light guide plate and in the avoidance area.
3. The backlight film installation structure according to claim 2, characterized in that: The optical film further comprises a second colloid and a third film layer, wherein the first end of the second film layer is adhered to the first end of the third film layer through the second colloid, and the second end of the third film layer is exposed outside the light guide plate and within the avoidance area.
4. The backlight film installation structure according to claim 3, characterized in that: The optical film further includes a third colloid, and the first end of the third film layer is adhered to the light guide plate through the third colloid.
5. The backlight film installation structure according to claim 1, characterized in that: It also includes a supporting platform, which is arranged on the casting.
6. The backlight film installation structure according to claim 5, characterized in that: It also includes a middle frame, which is arranged on the supporting platform.
7. The backlight film installation structure according to claim 6, characterized in that: It also includes foam, which is arranged on the middle frame.
8. The backlight film installation structure according to claim 7, characterized in that: It also includes a double-sided adhesive tape, which is arranged on the casting.
9. The backlight film installation structure according to claim 8, characterized in that: It also includes a cover plate, which is connected to the double-sided adhesive and the foam respectively.
10. The backlight film installation structure according to claim 9, characterized in that: A reflective sheet is also included, and the reflective sheet is arranged on the bottom of the casting.