TWM532090U - Structure of waterproof and single-layer thin-film keyboard for notebook computer - Google Patents

Description

Waterproof single-layer membrane keyboard structure for notebook computer

This creation is about a keyboard, especially a waterproof single-layer membrane keyboard structure for a notebook computer.

The notebook computer has become an indispensable electronic device in daily life or work because it has the functions of being easy to carry around and using instant Internet communication. Therefore, in addition to improving the computing speed and being lighter, the current design of the notebook computer is to make the thickness of the notebook computer thinner.

How to make the notebook computer thinner, the thin film printing circuit used in the traditional notebook computer is made in three layers. The three-layer production includes the upper film circuit layer, the insulating layer and the lower film circuit layer. Waterproof glue is printed on both sides of the line of the conductive circuit layer of the upper and lower film circuit layers. When the upper film circuit layer and the lower film circuit layer are bonded together, the insulating layer is attached between the upper and lower film circuit layers and Adhesive with waterproof glue. After the upper film circuit layer, the insulating layer and the lower film circuit layer are bonded, not only has a waterproof effect, but also has an air passage to prevent a gas-tight phenomenon between the upper film circuit, the insulating layer and the lower film circuit layer, and the insulating layer can be prevented. No short circuit occurs between the upper film circuit layer and the lower film circuit layer. Since the conventional thin film printed circuit has a three-layer structure design, problems such as air passage, waterproof and short circuit are considered in the manufacturing process, so that the three-layer thin film printed circuit step is difficult to be produced, resulting in an increase in manufacturing cost.

In order to improve the three-layer defect, a two-layer thin film circuit is proposed. The two-layer thin film circuit includes an upper thin film circuit layer and a lower thin film circuit layer, and is disposed on the upper thin film circuit layer and the lower thin film circuit layer. A layer of waterproof glue is applied between the upper film circuit layer and the lower film circuit layer. However, since the waterproof glue is unevenly applied during the coating process, the pressure of the pressing will be uneven, so that it is easy to cause contact between the upper film circuit layer and the lower film circuit layer. The problem arises.

Therefore, the main purpose of this creation is to solve the traditional lack. This creation proposes a waterproof single-layer membrane keyboard structure, which makes the pressure of the pressing pressure stable on average, and the circuit design of the circuit is easier and simpler. There is a thinner structure of the overall membrane keyboard structure.

To achieve the above purpose, the present invention provides a waterproof single-layer membrane keyboard structure for a notebook computer, comprising: a thin film circuit layer, a rubber elastic layer, a first protective layer and a second protective layer. The film circuit layer has a substrate having a surface and a back surface, the substrate having a circuit layer on the surface thereof, the circuit layer having a plurality of first traces and a plurality of second traces, the plurality of A first conductive portion and a second conductive portion are disposed at one end of each of the traces and the second conductive portions. The first conductive portions and the second conductive portions are correspondingly staggered. The rubber elastic layer is composed of a plurality of elastic monomers and is located on the circuit layer of the surface of the substrate. Each of the elastic monomers has an elastic portion, and the bottom portion of the elastic portions has one bit at the first The conductive portion and the protrusion portion on the second conductive portions have a conductive protrusion inside the elastic portion. The first protective layer is disposed on the surface of the substrate and the rubber elastic layer. The first protective layer has a plurality of through holes for passing the elastic monomers, and the protruding portions of the elastic portions are disposed on the substrate. Between the surface and the first protective layer. The second protective layer is disposed on the back surface of the substrate.

In an embodiment of the present invention, the first conductive portions and the second conductive portions have a braid shape.

In an embodiment of the present invention, the substrate, the first protective layer and the second protective layer are plastic.

In one embodiment of the present invention, the plastic is polyethylene terephthalate, polyethylene, polyimine or polyurethane.

In an embodiment of the present invention, the first protective layer and the second protective layer each have a first joint portion and a second joint portion, and the first joint portion and the second joint portion are disposed between the first joint portion and the second joint portion. An adhesive layer is used to bond the first protective layer and the second protective layer.

In an embodiment of the present invention, a convex portion is protruded from the outer surface of the elastic portion, and the convex portion is pressed by an outer key cap to cause the convex portion to interlock with the elastic portion.

In an embodiment of the present invention, the edges of the through holes are provided with a glue layer, and the glue layers are glued to the protrusions of the elastic portions.

In one embodiment of the present invention, the glue layer is an ultraviolet light glue.

In an embodiment of the present invention, the elastic portions are in the shape of a bowl.

The technical content and detailed description of this creation are now described as follows:

Please refer to FIG. 1 and FIG. 2, which are schematic perspective views of the waterproof single-layer membrane keyboard structure of the present invention and the single button structure of FIG. As shown in the figure, the waterproof single-layer membrane keyboard structure of the notebook computer of the present invention comprises: a thin film circuit layer 1, a rubber elastic layer 2, a first protective layer 3 and a second protective layer 4.

The thin film circuit layer 1 has a substrate 11 having a surface 111 and a back surface 112 thereon. The metal layer on the surface 111 of the substrate 11 is patterned by dry or wet etching to form a circuit layer 12 having a plurality of first traces 121 and a plurality of second traces 122. Each of the first traces 121 and the second traces 122 has a first conductive portion 123 and a second conductive portion 124. The first conductive portion 123 and the second conductive portions 124 is correspondingly staggered. In the figure, the substrate 11 is a plastic, and the plastic is polyethylene terephthalate (PET), polyethylene (Polyethylene, PE), polyimide (PI) or polyurethane ( Any of Polyurethanes, PU).

The rubber elastic layer 2 is composed of a plurality of elastic monomers 21 and is located on the wiring layer 12 of the surface 111 of the substrate 11. Each of the elastic members 21 has an inverted portion-shaped elastic portion 211. The bottom portion of the elastic portion 211 has a protruding portion disposed on the first conductive portion 123 and the second conductive portions 124. 212. The conductive portion 211 has a conductive protrusion 213. The conductive protrusion 213 is in contact with the first conductive portion 123 and the second conductive portion 124 to form a conductive state, and the signal can pass through the first traces. 121 or the second traces 122 are transferred to an external device (not shown) for processing. Further, a convex portion 214 is protruded from the outer surface of the elastic portion 211, and the convex portion 214 is compressed by an external key cap (not shown), so that the convex portion 214 is interlocked with the elastic portion 211 to be deformed. The conductive protrusions 213 inside the elastic portion 211 are in contact with the first conductive portions 123 and the second conductive portions 124 to generate a button-on signal.

The first protective layer 3 is provided on the surface 111 of the substrate 11 and the rubber elastic layer 2. The first protective layer 3 has a plurality of through holes 31 for passing the elastic monomers 21, and when the first protective layer 3 is attached to the surface 111 of the substrate 11, the elastic portions of the elastic monomers 21 The protrusions 212 of the elastic portions 211 are interposed between the surface of the substrate 11 and the first protective layer 3 through the through holes 31 . In the figure, the first protective layer 3 is plastic, and the plastic is polyethylene terephthalate (PET), polyethylene (PE), polyimide (PI). Or any of polyurethane (Polyurethanes, PU).

The second protective layer 4 is provided on the back surface 112 of the substrate 11. The second protective layer 4 is in the figure, the second protective layer 4 is plastic, and the plastic is Polyethylene Terephthalate (PET), Polyethylene (PE), Poly Any of an amine (Polyimide, PI) or a polyurethane (Polyurethanes, PU).

Please refer to FIG. 2 to FIG. 4 , which are a perspective exploded view of a single button structure of FIG. 1 and a schematic view of the operation of FIG. 3 . As shown in the figure, when the composition is combined, the elastic monomers 21 of the rubber elastic layer 2 are positioned on the surface 111 of the substrate 11, and the first protective layer 3 is respectively attached to the surface of the substrate 11. 111 and the second protective layer 4 are bonded to the back surface 12 of the substrate 11. When the first protective layer 3 is attached, the elastic portions 211 of the elastic cells 21 pass through the through holes 31 of the first protective layer 3, so that the edge of the through hole 31 falls on the elastic body 211. On the crotch portion 212.

When the key unit 5 is pressed by the external force, the key cap 5 is pressed against the convex portion 214 of the elastic unit 21, so that the convex portion 214 interlocks the elastic portion 211. A deformation state is generated, and after the elastic portion 211 is deformed and pressed, the conductive protrusion 213 inside the elastic portion 211 is brought into contact with the first conductive portion 123 and the second conductive portion 124 of the circuit layer 12 to generate a button guide. The pass signal is processed by a device that is transmitted to the outside through the first trace 121 or the second trace 122.

Please refer to FIG. 5 , which is a schematic diagram of another embodiment of the waterproof single-layer membrane keyboard structure of the present invention. As shown in the figure, the structure of the present embodiment is substantially the same as that of the above-mentioned FIG. 1 to FIG. 4 , except that a glue layer 6 is coated on the edges of the through holes 31 of the first protective layer 3 . The edges of the through holes 31 are glued (bonded) to the abrupt portions 212 of the elastic body 21 to achieve waterproofing. In this figure, the glue layer 6 is Ultraviolet Rays (UV).

Please refer to FIG. 6 , which is a schematic diagram of still another embodiment of the waterproof single-layer membrane keyboard structure of the present invention. As shown in the figure, the structure of the present embodiment is substantially the same as that of the above-mentioned FIG. 1 to FIG. 4 , except that the area of the first protective layer 3 and the second protective layer 4 is larger than the area of the substrate 11 of the thin film circuit layer 1 . The first protective layer 3 and the second protective layer 4 are formed to have a first bonding portion 32 and a second bonding portion 41, and the first bonding portion 32 and the second bonding portion 41 are coated. An adhesive layer 7 is bonded to the first protective layer 3 and the second protective layer 4, so that the thin film circuit layer 1 is encapsulated between the first protective layer 3 and the second protective layer 4. To achieve a waterproof effect.

However, the above description is only a preferred embodiment of the present invention, and it is not intended to limit the scope of patent protection of the present creation. Therefore, the equivalent changes made by using the present specification or the content of the schema are all included in the right of the creation. Within the scope of protection, it is given to Chen Ming.

1‧‧‧film circuit layer

11‧‧‧Substrate

111‧‧‧ surface

112‧‧‧Back

12‧‧‧Line layer

121‧‧‧First line

122‧‧‧Second line

123‧‧‧First Conductive Department

124‧‧‧Second Conductive Department

2‧‧‧Rubber elastic layer

21‧‧‧elastic monomer

211‧‧‧Flexible Department

212‧‧‧ Turkic Department

213‧‧‧Electrical convex

214‧‧‧ convex

3‧‧‧First protective layer

31‧‧‧through hole

4‧‧‧Second protective layer

5‧‧‧Key Cap

6‧‧‧ glue layer

7‧‧‧Adhesive layer

Figure 1 is a schematic diagram of the stereoscopic solution of the waterproof single-layer membrane keyboard structure of the present invention.

2 is a perspective exploded view of the single button structure of FIG. 1.

3 is a perspective, cross-sectional view showing the single button structure of FIG. 1.

Figure 4 is a schematic view of the operation of Figure 3.

FIG. 5 is a schematic view showing another embodiment of the waterproof single-layer membrane keyboard structure of the present invention.

FIG. 6 is a schematic view showing still another embodiment of the waterproof single-layer membrane keyboard structure of the present invention.

1‧‧‧film circuit layer

11‧‧‧Substrate

111‧‧‧ surface

112‧‧‧Back

12‧‧‧Line layer

121‧‧‧First line

122‧‧‧Second line

123‧‧‧First Conductive Department

124‧‧‧Second Conductive Department

2‧‧‧Rubber elastic layer

21‧‧‧elastic monomer

211‧‧‧Flexible Department

212‧‧‧ Turkic Department

213‧‧‧Electrical convex

214‧‧‧ convex

3‧‧‧First protective layer

31‧‧‧through hole

4‧‧‧Second protective layer

Claims (9)

A waterproof single-layer membrane keyboard structure for a notebook computer, comprising: a thin film circuit layer having a substrate having a surface and a back surface, the substrate having a circuit layer on the surface thereof, the circuit layer having a plurality of layers a first trace and a plurality of second traces, each of the first traces and the second traces having a first conductive portion and a second conductive portion, the first conductive portions and the first conductive portion The second conductive portions are correspondingly staggered; a rubber elastic layer composed of a plurality of elastic monomers and located on the circuit layer on the surface of the substrate, each of the elastic monomers has an elastic portion, and the elastic portions The bottom edge of the portion has a protruding portion on the first conductive portion and the second conductive portions, the inner portion of the elastic portion has a conductive convex portion; a first protective layer is disposed on the substrate The first protective layer has a plurality of through holes for passing the elastic monomers, and the protrusions of the elastic portions are disposed on the surface of the substrate and the first protective layer. a second protective layer is disposed on the back surface of the substrate. The waterproof single-layer membrane keyboard structure of the notebook computer according to the first aspect of the invention, wherein the first conductive portions and the second conductive portions have a braid shape. The waterproof single-layer membrane keyboard structure of the notebook computer according to claim 1, wherein the substrate, the first protective layer and the second protective layer are plastic. The waterproof single-layer membrane keyboard structure of the notebook computer according to claim 3, wherein the plastic is polyethylene terephthalate, polyethylene, polyimine or polyurethane. The waterproof single-layer membrane keyboard structure of the notebook computer according to the first aspect of the invention, wherein the first protective layer and the second protective layer each have a first joint portion and a second joint portion, An adhesive layer is disposed between the first joint portion and the second joint portion, and the first protective layer and the second protective layer are bonded by the adhesive layer. The waterproof single-layer membrane keyboard structure of the notebook computer according to the first aspect of the invention, wherein the elastic portion is convexly provided with a convex portion, and the convex portion is pressed by an outer key cap, so that the The convex portion moves the bullet portion in conjunction. The waterproof single-layer membrane keyboard structure of the notebook computer of claim 1, wherein the edges of the through holes are provided with a glue layer, and the glue layers are used to glue the protrusions of the elastic portions. The waterproof single-layer membrane keyboard structure of the notebook computer according to claim 7, wherein the adhesive layer is an ultraviolet light glue. The waterproof single-layer membrane keyboard structure of the notebook computer according to claim 1, wherein the elastic portions are in the shape of a bowl.