TWM502941U - Waterproof thin-film circuit board structure and waterproof keyboard thereof - Google Patents

Description

Waterproof film circuit board structure and waterproof keyboard thereof

The present invention relates to a thin film circuit board structure, in particular to a waterproof film circuit board structure and a waterproof keyboard thereof.

Information products have become an indispensable part of modern life. The keyboard is a commonly used input device. However, in daily life, there is a situation in which the beverage is accidentally knocked over and splashed onto the keyboard. It may also be raining when used outdoors, and rain may seep between the buttons.

The conventional button module generally only includes a button cover and a key cap, and the button cover is adhered to the key cap. The key cap is an elastic body which can be deformed by an external force and restored to a shape after the external force is removed. The button module is sleeved in the housing hole of the portable electronic device, and a fine gap is formed between the button module and the portable electronic device. If the button module is frequently placed in a humid or rainy day, the water or water vapor may penetrate into the portable electronic device through the fine gap between the button and the outer casing, thereby affecting the circuit of the portable electronic device. Board operating system.

The conventional button module will apply a layer of waterproof glue between the button and the outer casing, or even the thin film circuit board, but because of the long-term use, the waterproof rubber is not eroded or aged due to moisture, and still cannot achieve a comprehensive waterproof effect. As a result, moisture will still invade the inside of the portable electronic device, causing damage to its internal electronic components.

In view of this, the creators of this case have the waterproof mechanism of the portable electronic device. There are still many shortcomings and deficiencies, so I tried my best to research and create, and finally developed this creation.

One of the purposes of the present invention is to provide a waterproof film circuit board structure and a waterproof keyboard thereof, which effectively prevent water from entering the product to extend the life.

To achieve the above object, the present invention provides a waterproof film circuit board structure including a plurality of sheets and a waterproof structure. Each piece has a styling edge. The waterproof structure is continuously disposed along the edge of the shape, wherein the waterproof structure comprises two waterproof glues, and the two waterproof glues are spaced apart.

Another broad implementation of the present invention also provides a waterproof keyboard comprising a button layer, a film circuit board and a backplane. The thin film circuit board is disposed under the button layer. The thin film circuit board includes a plurality of sheets, and each of the sheets has a molding edge. The bottom plate is disposed under the thin film circuit board. A waterproof structure is continuously disposed along each edge of the film circuit board along the molding edge. The waterproof structure comprises two waterproof glues, and the two waterproof glues are arranged at intervals.

A more general implementation of the present invention also provides a waterproof keyboard comprising a button layer, a film circuit board, a bottom plate and a waterproof layer. The thin film circuit board is disposed under the button layer. The bottom plate is disposed under the thin film circuit board, and the bottom plate has a molding edge. The waterproof layer is disposed below the bottom plate. The waterproof layer is continuously provided with a waterproof structure corresponding to the shape edge. The waterproof structure comprises two waterproof glues, and the two waterproof glues are arranged at intervals.

100‧‧‧film circuit board

110‧‧‧ tablets

120‧‧‧ shape edge

130‧‧‧Upper film layer

140‧‧‧ spacer

150‧‧‧ lower film layer

200‧‧‧Waterproof structure

210‧‧‧Waterproof glue

210a‧‧‧First waterproof glue

210b‧‧‧Second waterproof glue

220‧‧‧ dielectric layer

300‧‧‧Waterproof keyboard

310‧‧‧ button layer

320‧‧‧Key Cap

330‧‧‧Connecting mechanism

340‧‧‧Flexible parts

400‧‧‧floor

500‧‧‧Waterproof layer

FIG. 1 is an exploded view showing the structure of the water-repellent film circuit board of the present invention.

Figure 2 is a plan view of one of the bodies of Figure 1.

Fig. 3A is a partial enlarged view of 3A in Fig. 2.

FIG. 3B is a view of another embodiment of FIG. 3A.

FIG. 3C is a view of still another embodiment of FIG. 3A.

FIG. 4 is an exploded view showing the waterproof keyboard of the present invention.

FIG. 5 is an exploded view showing another embodiment of the water-repellent keyboard of the present invention.

FIG. 6 is an exploded view showing still another embodiment of the water-repellent keyboard of the present invention.

This creation is a waterproof film circuit board structure that prevents water from entering the inside of the product to extend its life and its waterproof keyboard. A thin film circuit board as referred to herein includes, but is not limited to, a thin film circuit board applied to a keyboard. In addition, in the waterproof keyboard illustration of the present invention, only a single button is shown, but the actual application may also be applied to the entire keyboard structure, and is not limited. The detailed description and technical content of the present invention are described below with reference to the drawings, but the drawings are only for reference and explanation, and are not intended to limit the creation.

As shown in Fig. 1, an exploded view of the structure of the waterproof circuit board is created. As shown, the present invention provides a waterproof film circuit board structure including a plurality of sheets 110 and a waterproof structure 200. Each piece 110 has a contoured edge 120. The waterproof structure 200 is continuously disposed along the molding edge 120, wherein the waterproof structure 200 includes two waterproof glues 210 (shown in FIG. 3A), and the two waterproof adhesives 210 are spaced apart.

In the embodiment of FIG. 1 , each of the sheets 110 includes an upper film layer 130 , a lower film layer 150 , and a spacer layer 140 . The spacer layer 140 is disposed between the upper film layer 130 and the lower film layer 150 . The upper film layer 130, the spacer layer 140 and the lower film layer 150 may be composed A thin film circuit board (not shown). Generally, the surface of the upper film layer 130 opposite to the lower film layer 150 is provided with a circuit and a corresponding electrode, and the middle is a non-conductive plastic piece 140 and a hole is formed corresponding to some electrodes. When the electrodes of the upper film layer 130 and the lower film layer 150 are in contact with each other through the holes, the contacts are energized, that is, the electrical conduction is completed.

As shown in FIG. 2, a schematic plan view of one of the bodies of FIG. 1 is shown. The waterproof structure 200 may be disposed on the single sheet 110 or each of the sheets 110, as needed. In addition, the spacer layer (not shown) provided with the waterproof structure 200 in the middle also has an adhesive effect, so that the upper and lower sheets 110 are attached together. In this embodiment, the sheet 110 can be any sheet, such as an upper or lower film layer. The waterproof structure 200 can be continuously disposed along the molding edge 120 of any of the sheets 110. The styling edge 120 can be an outline of a thin film circuit board (not shown) as shown in FIG. 2 or a plurality of hole edges formed on the thin film circuit board. Please refer to FIG. 3A at the same time, which is a partial enlarged view of 3A in FIG. 2 . The two waterproof adhesives 210 include a first waterproof adhesive 210a and a second waterproof adhesive 210b. The first waterproof adhesive 210a and the second waterproof adhesive 210b further comprise a dielectric layer 220. The dielectric layer 220 is preferably an air medium.

It should be noted that the material of the waterproof adhesive 210 includes, but is not limited to, silicone, 3M adhesive, PU waterproof rubber single liquid, PU waterproof rubber epoxy resin (A/B glue) and the like. The width of each of the waterproof adhesives 210a, 210b is preferably between 0.02 and 0.05 millimeters (mm).

As shown in FIG. 4, another broad implementation of the present invention provides a waterproof keyboard 300 including a button layer 310, a thin film circuit board 100, and a bottom plate 400. The thin film circuit board 100 is disposed under the key layer 310. The thin film circuit board 100 includes a plurality of sheets 110, and each of the sheets 110 has a molding edge 120. The bottom plate 400 is disposed on the film Below the road plate 100. A waterproof structure 200 is continuously disposed between each of the sheets 110 of the thin film circuit board 100 along the molding edge 120. The waterproof structure 200 includes two waterproof glues 210, and the two waterproof glues 210 are spaced apart.

It should be particularly noted that although the waterproof keyboard shown in FIG. 4 only shows a single button layer 310, those who are familiar with the art can still practically apply to the overall keyboard structure, so this creation does not The entire keyboard structure is again depicted. As shown in FIG. 4, each of the sheets 110 includes an upper film layer 130, a lower film layer 150, and a spacer layer 140. The spacer layer 140 is disposed between the upper film layer 130 and the lower film layer 150. The upper film layer 130, the lower film layer 150 and the spacer layer 140 respectively correspond to each of the key caps 320 of the button layer 310, wherein the sheet body 110 is further provided with a plurality of holes (which can be regarded as one of the molding edges 120). The button layer 310 includes a key cap 320, a connecting mechanism 330 under the key cap 320, and an elastic member 340. The connecting mechanism 330 drives the key cap 320 to move relative to the bottom plate 400, and the elastic member 340 provides a return elastic force after the key cap 320 is pressed. . Therefore, when the key cap 320 is pressed, the key cap 320 respectively touches the connecting mechanism 330 and the elastic member 340, and a portion of the elastic member 340 will abut the upper film layer 130, so that the upper film layer 130 is in contact with the lower film layer 150, and electricity is formed. That is, electrical conduction is completed. Conversely, when the keycap 320 is released, the elastic member 340 and the connecting mechanism 330 are returned to the original position, and the upper film layer 130 is separated from the lower film layer 150, that is, an open circuit is formed.

As shown in FIG. 4, the waterproof structure 200 can be disposed on the thin film circuit board 100 only in a single continuous edge along the molding edge 120, thereby effectively preventing moisture from entering the interior of the keyboard. However, in the embodiment shown in FIG. 5, the waterproof structure 200 can also be disposed only in the waterproof layer 500 under the bottom plate 400 along the molding edge 120, and the effect of preventing liquid from penetrating under the bottom plate 400 can also be achieved. Extend product life. As shown in FIG. 5, the present invention further provides a waterproof keyboard, including a button layer 310 and a thin film circuit board 100. A bottom plate 400 and a waterproof layer 500. The thin film circuit board 100 is disposed under the key layer 310. The bottom plate 400 is disposed under the thin film circuit board 100, and the bottom plate 400 has a molding edge 120. The waterproof layer 500 is disposed under the bottom plate 400. The waterproof layer 200 is continuously provided with a waterproof structure 200 corresponding to the molding edge 120. The waterproof structure 200 includes two waterproof glues 210 (refer to FIG. 3A to FIG. 3C together), and the two waterproof glues 210 are spaced apart. The structure of the button 310 and the waterproof structure 200 described herein are the same as those of the foregoing embodiment, and are not described herein again.

In order to enhance the waterproof effect, a waterproof structure 200 may be disposed under the thin film circuit board 100 and the bottom plate 400, respectively, as shown in FIG. In the embodiment shown in FIG. 6, the waterproof layer 500 on the surface sheet of the thin film circuit board 100 and under the bottom plate 400 is provided with the waterproof structure 200 at the same time. The foregoing embodiments have been disclosed with respect to the relationship of the waterproof structure 200 and the shape of the molding edge 120, and the like, and will not be described herein.

In summary, the embodiments disclosed herein are to be considered as illustrative of the present invention and are not intended to limit the present invention. The scope of this creation is defined by the scope of the appended patent application and covers its legal equivalents and is not limited to the foregoing description.

100‧‧‧film circuit board

110‧‧‧ tablets

120‧‧‧ shape edge

130‧‧‧Upper film layer

140‧‧‧ spacer

150‧‧‧ lower film layer

200‧‧‧Waterproof structure

300‧‧‧Waterproof keyboard

310‧‧‧ button layer

320‧‧‧Key Cap

330‧‧‧Connecting mechanism

340‧‧‧Flexible parts

400‧‧‧floor

Claims (20)

A waterproof film circuit board structure comprising: a plurality of sheets, the plurality of sheets having a molding edge; a waterproof structure continuously disposed along the molding edge; wherein the waterproof structure comprises two waterproof glues, the two waterproof glues being spaced apart. The waterproof film circuit board structure of claim 1, wherein the plurality of sheets comprises an upper film layer, a lower film layer and a spacer layer, wherein the spacer layer is disposed between the upper film layer and the lower film layer. The waterproof film circuit board structure of claim 1, wherein the molding edge is an outer contour forming the thin film circuit board or a plurality of holes formed on the thin film circuit board. The waterproof film circuit board structure of claim 1, wherein the two waterproof adhesives further comprise a dielectric layer. The waterproof film circuit board structure of claim 4, wherein the dielectric layer is an air medium. The waterproof film circuit board structure of claim 1, wherein each of the waterproof glues is disposed parallel to the molding edge. The waterproof film circuit board structure according to claim 1, wherein each of the waterproof rubber has a shape of a straight line or a wave. A waterproof keyboard comprising: a button layer; a thin film circuit board disposed under the button layer, the film circuit board comprising a plurality of sheets And the plurality of sheets respectively have a molding edge; and a bottom plate is disposed under the thin film circuit board; wherein the plurality of sheets of the thin film circuit board are continuously provided with a waterproof structure along the molding edge, the waterproof structure comprises two waterproof structures Glue, the two waterproof glues are arranged at intervals. The waterproof keyboard of claim 8, wherein the plurality of sheets comprises an upper film layer, a lower film layer and a spacer layer, wherein the spacer layer is disposed between the upper film layer and the lower film layer. The waterproof keyboard of claim 8, wherein the molding edge is an outer contour forming the thin film circuit board or a plurality of holes formed on the thin film circuit board. The waterproof keyboard of claim 8, wherein the two waterproof glues further comprise a dielectric layer. The waterproof keyboard of claim 11, wherein the dielectric layer is an air medium. The waterproof keyboard of claim 11, wherein each of the waterproof glue is disposed parallel to the molding edge. The waterproof keyboard of claim 11, wherein each of the waterproof glue has a shape of a straight line or a wave. A waterproof keyboard comprising: a button layer; a film circuit board disposed under the button layer; and a bottom plate disposed under the film circuit board, the bottom plate having a molding edge; a waterproof layer disposed on the The water-repellent layer is continuously provided with a waterproof structure corresponding to the shape edge, and the waterproof structure comprises two waterproof glues, and the two waterproof glues are spaced apart. The waterproof keyboard of claim 15 wherein the contoured edge is an outer contour forming the bottom panel or a plurality of apertures formed in the bottom panel. The waterproof keyboard of claim 15, wherein the two waterproof adhesives further comprise a dielectric layer. The waterproof keyboard of claim 17, wherein the dielectric layer is an air medium. The waterproof keyboard of claim 15, wherein each of the waterproof glue is disposed parallel to the molding edge. The waterproof keyboard according to claim 15, wherein each of the waterproof glue has a shape of a straight line or a wave.