Keyboard conducting film structure capable of improving LED (light-emitting diode) glue sealing effect

Abstract

The utility model provides a keyboard conducting film structure capable of improving LED (light-emitting diode) sealing effect, which comprises a lower-layer PET (polyethylene terephthalate) film, a lower-layer water glue film, a middle-layer PET film, an upper-layer water glue film, an upper-layer PET film, an LED lamp and edge sealing glue, the lower-layer PET film, the lower-layer water glue film, the middle-layer PET film, the upper-layer water glue film and the upper-layer PET film are sequentially adhered from bottom to top, the conducting film is provided with a mounting groove, and the LED lamp is arranged in the mounting groove. A mounting groove vertically penetrates through the lower-layer water glue film, the middle-layer PET film, the upper-layer water glue film and the upper-layer PET film, the lower-layer water glue film is provided with a first air storage groove, the first air storage groove is communicated with the mounting groove, the LED lamp is fixed in the mounting groove through edge sealing glue, and the edge sealing glue corresponds to the interior of the mounting groove and surrounds the periphery of the LED lamp. The first gas storage tank is arranged on the lower-layer water glue film, and after edge sealing glue is added, gas in the mounting groove is extruded into the first gas storage tank, so that bubbles cannot appear in the edge sealing glue, the quality of the LED lamp sealing glue and the illumination intensity and uniformity of the LED lamp are improved, and the percent of pass of products is also improved.

Description

Technical Field

[0001] The utility model relates to the technical field of keyboard conductive films, and particularly relates to a keyboard conductive film structure for improving the LED encapsulation effect. Background Art

[0002] A keyboard conductive film, also known as a metal shrapnel conductive film, is a PET thin sheet containing metal shrapnel and is used as a switch on a circuit board such as a PCB or FPC. It plays an important role as a tactile switch between the user and the instrument. It realizes the conductive function by printing conductive silver paste on the PET thin sheet. Some styles of keyboards will assemble LED lights on the conductive film, which can play a role in beautifying the appearance and lighting. The traditional assembly method is to set vertical installation grooves on the conductive film, place the LED lights in the installation grooves, and add glue around the LED for edge sealing. However, after adding the glue, the gas originally in the installation groove is likely to accumulate at the bottom of the installation groove and then form bubbles inside the glue. The bubbles will affect the intensity and uniformity of the LED light emission. When there are too many bubbles, the product may even be judged as a defective product and cannot be put into use. Therefore, it is necessary to make a keyboard conductive film structure for improving the LED encapsulation effect to solve the above problems. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a keyboard conductive film structure for improving the LED encapsulation effect to solve the problems mentioned in the background art.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A keyboard conductive film structure for improving the LED encapsulation effect, including a lower PET film, a lower water glue film, a middle PET film, an upper water glue film, an upper PET film, an LED lamp and a sealing edge glue. The lower PET film, the lower water glue film, the middle PET film, the upper water glue film and the upper PET film are adhesively bonded in sequence from bottom to top. An installation groove is provided on the conductive film, and the installation groove vertically penetrates through the lower water glue film, the middle PET film, the upper water glue film and the upper PET film. The lower water glue film is provided with a first gas storage groove, and the first gas storage groove communicates with the installation groove. The LED lamp is fixed in the installation groove through the sealing edge glue, and the sealing edge glue is located in the installation groove and surrounds the outer periphery of the LED lamp.

[0006] Further description of the utility model: Four groups of first gas storage grooves are provided and respectively correspond to the four sides of the LED lamp.

[0007] Further description of the utility model: The upper water glue film is provided with a second gas storage groove, and the second gas storage groove communicates with the installation groove.

[0008] Further description of the utility model: Four groups of second gas storage grooves are provided and respectively correspond to the four sides of the LED lamp.

[0009] Further description of the present utility model: The first air storage groove is a square groove or a semi-circular groove, and the second air storage groove is a square groove or a semi-circular groove.

[0010] The beneficial effects of the present utility model are as follows: The LED lamp is placed in the installation groove, and edge-sealing glue is added around the LED. After adding the edge-sealing glue to the traditional conductive film structure, the gas originally in the installation groove is likely to accumulate at the bottom of the installation groove, and then form bubbles inside the glue. The bubbles will affect the luminous intensity and uniformity of the LED. When there are too many bubbles, the product may even be judged as defective and cannot be put into use. Therefore, this design proposes a new conductive film structure. A first air storage groove is provided on the lower water glue film. After adding the edge-sealing glue, the gas in the installation groove is squeezed into the first air storage groove, so that no bubbles will appear in the edge-sealing glue, improving the quality of the edge-sealing of the LED lamp, the luminous intensity and uniformity of the LED lamp, and also improving the qualified rate of the product. Description of the Drawings

[0011] Figure 1 is the structural diagram of the lower water glue film in the present utility model;

[0012] Figure 2 is the cross-sectional structural schematic diagram of the present utility model;

[0013] Figure 3 is the structural diagram of the lower water glue film in the prior art;

[0014] Figure 4 is the cross-sectional structural schematic diagram of the prior art;

[0015] Description of the Reference Numerals:

[0016] 01, lower PET film; 02, lower water glue film; 021, first air storage groove; 03, middle PET film;

[0017] 04, upper water glue film; 041, second air storage groove; 05, upper PET film; 06, LED lamp; 07, edge-sealing glue; 08, installation groove. Detailed Embodiments

[0018] The present utility model will be further described below with reference to the drawings:

[0019] As Figures 1 to 4As shown in the figure, a keyboard conductive film structure for improving the encapsulation effect of LEDs includes a lower PET film 01, a lower water-based adhesive film 02, a middle PET film 03, an upper water-based adhesive film 04, an upper PET film 05, an LED lamp 06, and a sealing edge adhesive 07. The lower PET film 01, the lower water-based adhesive film 02, the middle PET film 03, the upper water-based adhesive film 04, and the upper PET film 05 are adhesively bonded in sequence from bottom to top. An installation groove 08 is provided on the conductive film, and the installation groove 08 vertically penetrates through the lower water-based adhesive film 02, the middle PET film 03, the upper water-based adhesive film 04, and the upper PET film 05. The lower water-based adhesive film 02 is provided with a first gas storage groove 021, and the first gas storage groove 021 communicates with the installation groove 08. The LED lamp 06 is fixed in the installation groove 08 through the sealing edge adhesive 07, and the sealing edge adhesive 07 is located corresponding to the installation groove 08 and surrounds the outer periphery of the LED lamp 06.

[0020] The LED lamp 06 is placed in the installation groove 08, and a sealing edge adhesive 07 is added to the outer periphery of the LED. As Figure 3 and 4 shown, after the sealing edge adhesive 07 is added to the traditional conductive film structure, the gas originally in the installation groove 08 is likely to accumulate at the bottom of the installation groove 08, and then form bubbles inside the glue. The bubbles will affect the intensity and uniformity of the LED light emission. When there are too many bubbles, the product will even be judged as a defective product and cannot be put into use. Therefore, this design proposes a new conductive film structure. A first gas storage groove 021 is provided on the lower water-based adhesive film 02. After the sealing edge adhesive 07 is added, the gas in the installation groove 08 is squeezed into the first gas storage groove 021, so that no bubbles will appear in the sealing edge adhesive 07, improving the encapsulation quality of the LED lamp 06, the light intensity and uniformity of the LED lamp 06, and also improving the qualification rate of the product.

[0021] Four groups of the first gas storage grooves 021 are provided and respectively correspond to the four sides of the LED lamp 06. This enables the gas around the installation groove 08 to quickly and evenly enter each of the first gas storage grooves 021, better avoiding the appearance of bubbles in the sealing edge adhesive 07.

[0022] The upper water-based adhesive film 04 is provided with a second gas storage groove 041, and the second gas storage groove 041 communicates with the installation groove 08. The second gas storage groove 041 is arranged above the first gas storage groove 021 and can accommodate part of the gas during the downward flow of the sealing edge adhesive 07, thus further avoiding the appearance of bubbles in the sealing edge adhesive 07.

[0023] Four groups of the second gas storage grooves 041 are provided and respectively correspond to the four sides of the LED lamp 06. This enables the gas around the installation groove 08 to quickly and evenly enter each of the first gas storage grooves 021, better avoiding the appearance of bubbles in the sealing edge adhesive 07.

[0024] The first air storage groove 021 is a square groove or a semi-circular groove, and the second air storage groove 041 is a square groove or a semi-circular groove. Both the square groove and the semi-circular groove are convenient for processing, improving the production efficiency of the conductive film and reducing the cost.

[0025] The working principle of this embodiment:

[0026] In the conductive film structure of this design, a first air storage groove 021 is provided on the lower water glue film 02. After adding the edge-sealing glue 07, the gas in the installation groove 08 is squeezed into the first air storage groove 021, so that no bubbles will appear in the edge-sealing glue 07, improving the edge-sealing quality of the LED lamp 06, the light intensity and uniformity of the LED lamp 06, and also improving the qualified rate of the product.

[0027] The above does not impose any limitation on the technical scope of the present invention. Any modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A keyboard conductive film structure for improving the LED potting effect, characterized in that: It includes a lower PET film, a lower water-based adhesive film, a middle PET film, an upper water-based adhesive film, an upper PET film, an LED lamp and a sealing adhesive. The lower PET film, the lower water-based adhesive film, the middle PET film, the upper water-based adhesive film and the upper PET film are adhesively bonded in sequence from bottom to top. An installation groove is provided on the conductive film, and the installation groove vertically penetrates the lower water-based adhesive film, the middle PET film, the upper water-based adhesive film and the upper PET film. The lower water-based adhesive film is provided with a first air storage groove, and the first air storage groove communicates with the installation groove. The LED lamp is fixed in the installation groove through the sealing adhesive, and the sealing adhesive corresponds to the inside of the installation groove and surrounds the outer periphery of the LED lamp.

2. The keyboard conductive film structure for improving the LED potting effect according to claim 1, wherein: Four groups of the first air storage grooves are provided and respectively correspond to the four sides of the LED lamp.

3. The keyboard conductive film structure for improving the LED potting effect according to claim 1, characterized in that: The upper water-based adhesive film is provided with a second air storage groove, and the second air storage groove communicates with the installation groove.

4. The keyboard conductive film structure for improving the LED potting effect according to claim 3, wherein: Four groups of the second air storage grooves are provided and respectively correspond to the four sides of the LED lamp.

5. The keyboard conductive film structure for improving the LED encapsulation effect according to claim 3, characterized in that: The first air storage groove is a square groove or a semi-circular groove, and the second air storage groove is a square groove or a semi-circular groove.

Images