Shading film for keyboard backlight module

Abstract

The utility model discloses a shading film for a keyboard backlight module. The shading film for the keyboard backlight module comprises a shading film body, a fixing frame is installed on the shading film body, an installation groove is formed in the fixing frame, a first bonding layer is installed in the installation groove, and the shading film body is connected with the first bonding layer. According to the shading film for the keyboard backlight module, the fixing frame is installed on the outer ring of the shading film body, the problem that the strength is poor due to the material problem of the shading film is solved, when the shading film body is assembled and used, wrinkles and bending are not prone to occurring, the shading film body can be aligned with keys more easily, and the phenomena of light leakage and the like are not prone to occurring; and the product quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of keyboards, in particular to a light-shielding film for a keyboard backlight module. Background Art

[0002] The keyboard backlight module from top to bottom is respectively a light-shielding film, a light guide plate, a reflective film, an LED and an FPC. The conventional design of the light-shielding film is to print light-shielding ink on the light-shielding area of high-transparency PET to prevent light transmission in the light-shielding area, and there is no need to print light-shielding ink in the light-transmitting area of the light-shielding film.

[0003] However, the light-shielding film made of high-transparency PET material is relatively thin and very easy to deform. When taking it for assembly, wrinkles are likely to appear, which may cause the hole positions not to align with the key positions, thus affecting the subsequent use and reducing the product yield.

[0004] Therefore, it is necessary to provide a light-shielding film for a keyboard backlight module to solve the above technical problems. Summary of the Utility Model

[0005] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a light-shielding film for a keyboard backlight module, which is not easy to wrinkle and bend and is more convenient for assembly.

[0006] To achieve the above object, the technical scheme adopted by the utility model is as follows:

[0007] The light-shielding film for a keyboard backlight module includes: a light-shielding film body, a fixing frame made of a hard material with strong toughness and rigidity is installed on the light-shielding film body, light-transmitting holes corresponding to the key positions are provided on the light-shielding film body, light-shielding ink is printed or sprayed at the positions of non-light-transmitting holes, mounting grooves are formed on the fixing frame, a first adhesive layer is installed in the mounting grooves, and the top of the light-shielding film body is fixed in the mounting grooves through the first adhesive layer.

[0008] Preferably, a second adhesive layer is installed at the bottom of the fixing frame.

[0009] Preferably, a release paper is installed at the bottom of the second adhesive layer to protect the bottom of the second adhesive layer through the release paper.

[0010] Preferably, a plurality of positioning holes and positioning grooves are formed on the fixing frame.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] (1) By installing a fixing frame on the outer circle of the light-shielding film body, the utility model solves the problem of poor strength caused by the material of the light-shielding film itself, so that the light-shielding film body is not easy to wrinkle and bend during assembly and use, is easier to align with the keys, and is not easy to have phenomena such as light leakage, thereby improving the product quality;

[0013] (2) The utility model can conveniently fix the light-shielding film body on the top of the light guide plate by installing a second adhesive layer on the fixed frame;

[0014] (3) The utility model can isolate and protect the second adhesive layer by installing a release paper at the bottom of the second adhesive layer;

[0015] (4) The utility model can conveniently position the light-shielding film body by providing a plurality of positioning holes and positioning grooves on the fixed frame. Description of the Drawings

[0016] Figure 1 is a schematic structural view of the light-shielding film for a keyboard backlight module provided by the utility model;

[0017] Figure 2 is Figure 1 a schematic structural view of the fixed frame in the light-shielding film for a keyboard backlight module shown in;

[0018] Figure 3 is Figure 1 a partial cross-sectional structural view of the light-shielding film for a keyboard backlight module shown in.

[0019] Among them, the names corresponding to the reference numerals are: 1 - light-shielding film body, 2 - light-transmitting hole, 3 - fixed frame, 4 - installation groove, 5 - first adhesive layer, 6 - second adhesive layer, 7 - release paper, 8 - positioning hole, 9 - positioning groove. Detailed Embodiments

[0020] The following further describes the utility model with reference to the description of the drawings and embodiments. The implementation manners of the utility model include but are not limited to the following embodiments.

[0021] As Figures 1-3 shown, the light-shielding film for a keyboard backlight module provided by the utility model includes: a light-shielding film body 1, a fixed frame 3 made of a hard material with strong toughness and rigidity is installed on the light-shielding film body 1. The material of the fixed frame 3 can be aluminum alloy. Light-transmitting holes 2 corresponding to the positions of the keys are provided on the light-shielding film body 1. Light-shielding ink is printed or sprayed at the positions of the non-light-transmitting holes 2. Installation grooves 4 are provided on the fixed frame 3. A first adhesive layer 5 is installed in the installation grooves 4. The first adhesive layer 5 is adhered to the light-shielding film body 1. The edge at the top of the light-shielding film body 1 is fixed in the installation grooves 4 through the first adhesive layer 5. During use, hold the fixed frame 3 and fix the fixed frame 3 together with the light-shielding film body 1 on the top of the light guide plate to assemble the backlight module. Due to the support of the outer fixed frame 3, the light-shielding film body 1 is not prone to wrinkles and bending when being taken, so that the light-shielding film body 1 is easier to align with the keys of the keyboard and is not prone to deviation, thereby improving the assembly quality and not prone to light leakage and other phenomena, and not affecting the function and use of the backlight module.

[0022] By installing the fixing frame 3 on the outer circle of the light-shielding film body 1, the problem of poor strength caused by the material of the light-shielding film itself is solved. When the light-shielding film body 1 is assembled and used, it is not easy to appear wrinkles and bends, is easier to align with the keys, and is not easy to appear light leakage and other phenomena, thereby improving the product quality.

[0023] Embodiment 2:

[0024] As Figure 3 shown, a second adhesive layer 6 is installed at the bottom of the fixing frame 3. During use, the fixing frame 3 is adhered to the light guide plate through the second adhesive layer 6, and then the light-shielding film body 1 is fixed on the top of the light guide plate.

[0025] By installing the second adhesive layer 6 on the fixing frame 3, the light-shielding film body 1 can be conveniently fixed on the top of the light guide plate.

[0026] Embodiment 3:

[0027] As Figure 3 shown, a release paper 7 is installed at the bottom of the second adhesive layer 6. The bottom of the second adhesive layer 6 is protected by the release paper 7. During use, first tear off the release paper 7, and then the light guide plate can be adhered to the bottom of the second adhesive layer 6.

[0028] By installing the release paper 7 at the bottom of the second adhesive layer 6, the second adhesive layer 6 can be isolated and protected.

[0029] Embodiment 4:

[0030] As Figure 1 shown, a plurality of positioning holes 8 and positioning grooves 9 are provided on the fixing frame 3. During use, the positioning posts on the outer shell are inserted into the positioning holes 8 or the positioning grooves 9, and then the fixing frame 3 is fixed at the designed position on the outer shell, thereby effectively positioning the light-shielding film body 1 and making its position accurate.

[0031] By providing a plurality of positioning holes 8 and positioning grooves 9 on the fixing frame 3, the light-shielding film body 1 can be conveniently positioned.

[0032] Working principle: During use, hold the fixing frame 3, fix the fixing frame 3 together with the light-shielding film body 1 on the top of the light guide plate, and assemble the backlight module. Due to the support of the fixing frame 3 on the outer circle, the light-shielding film body 1 is not easy to appear wrinkles and bends when being taken. Therefore, the light-shielding film body 1 is easier to align with the keys of the keyboard, is not easy to deviate, thereby improving the assembly quality, is not easy to appear light leakage and other phenomena, and will not affect the function and use of the backlight module.

Claims

1. A light-shielding film for a keyboard backlight module, characterized in that Including: A light-shielding film body (1), a fixing frame (3) is installed on the light-shielding film body (1), an installation groove (4) is formed on the fixing frame (3), a first adhesive layer (5) is installed in the installation groove (4), and the light-shielding film body (1) is connected to the first adhesive layer (5).

2. The light-shielding film for a keyboard backlight module according to claim 1, wherein, A second adhesive layer (6) is installed at the bottom of the fixing frame (3).

3. The light-shielding film for a keyboard backlight module according to claim 2, wherein, A release paper (7) is installed at the bottom of the second adhesive layer (6).

4. The light-shielding film for a keyboard backlight module according to claim 1, characterized in that, A plurality of positioning holes (8) are formed on the fixing frame (3).

5. A light-shielding film for a keyboard backlight module according to claim 1, wherein A plurality of positioning grooves (9) are formed on the fixing frame (3).

6. The light-shielding film for a keyboard backlight module according to claim 1, wherein, The fixing frame (3) is made of aluminum alloy.

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