CN101315841A - Key using membrane switch circuit and manufacturing method thereof - Google Patents

Abstract

The invention provides a membrane switch circuit and a key using the membrane switch circuit. An insulating layer of the membrane switch circuit has an annular opening. A bottom of an elastic element fits the annular opening of the insulating layer and is bonded to the annular opening by an adhesive. The annular opening can assist the elastic element to be accurately bonded to a specified position. In addition, the annular opening may prevent the adhesive from flowing out of the annular opening.

Description

Key using membrane switch circuit and manufacturing method thereof

technical field

The present invention relates to a membrane switch circuit (membrane switch circuit) and a button (keyswitch) using the membrane switch circuit, and in particular to an insulating layer (annualar opening) with an annular opening (annualar opening), and the annular The opening can assist a flexible member (deformable member) to be adhered accurately to the membrane switch circuit of the annular opening and the key using the membrane switch circuit.

Background technique

The keyboard is currently the most common input device, which can be applied to various electronic devices, such as home computers, notebook computers, personal digital assistants or other similar electronic devices. Since there is a large demand for keyboards in the market, it is an important goal of various manufacturers to quickly manufacture a large number of keyboards at the lowest cost and ensure a high yield and high quality of products.

In the manufacturing process of membrane keyboard keys, an elastic element is bonded to an insulating layer of a membrane switch circuit. The current general practice is to directly coat the adhesive on the insulating layer first, and then bond the elastic element to the insulating layer by the adhesive.

However, because the surface of the insulating layer is flat, it is often easy for the elastic element to slide arbitrarily during the bonding process, thereby causing errors in the bonding position and failing to achieve precise positioning. In addition, since the surface of the insulating layer is flat, the adhesive applied thereon may flow randomly, which further increases the difficulty of locating the bonding position of the elastic element. If the above-mentioned problems cannot be properly solved, the manufacturing cost is often increased, and the product yield and quality are also affected to a considerable extent.

Therefore, the main scope of the present invention is to provide a membrane switch circuit and a button using the membrane switch circuit to solve the above problems.

Contents of the invention

One scope of the present invention is to provide a membrane switch circuit and a key using the membrane switch circuit. The membrane switch circuit according to the present invention provides an insulating layer with an annular opening. When the elastic element is bonded to the membrane switch circuit with an adhesive, the annular opening can help the elastic element to be adhered to a designated position accurately. Furthermore, the annular opening prevents the adhesive from overflowing the annular opening. Thereby, during the manufacturing process of the button, the bonding of the elastic element will be more accurate, thereby increasing the manufacturing quality and product yield of the button.

A key according to a preferred embodiment of the present invention includes a substrate, a membrane circuit, a first insulating layer, a second insulating layer, elastic elements, a keycap (keycap) and a support device (supporting device). The thin film circuit has a switch. The first insulating layer is formed on the thin film circuit. The first insulating layer has a hole, and the switch is exposed in the hole. The second insulating layer is formed on the first insulating layer. The second insulating layer has an annular opening, and the annular opening surrounds the hole of the first insulating layer. A bottom of the elastic element fits into the annular opening of the second insulating layer and adheres to the annular opening of the second insulating layer, and the elastic element has a contact portion. The support device can movably connect the key cap and the base plate, and the support device supports the key cap to move vertically relative to the base plate. When the keycap is pressed by an external force, the elastic element deforms, and the contact portion of the elastic element contacts the switch to turn on the switch.

The membrane switch circuit according to another preferred embodiment of the present invention cooperates with an elastic element. The film switch circuit includes a film circuit, a first insulating layer and a second insulating layer. The thin film circuit has a switch. The first insulating layer is formed on the film circuit, the first insulating layer has a hole, and the switch is exposed in the hole. The second insulating layer is formed on the first insulating layer. The second insulating layer has an annular opening, and the annular opening surrounds the hole of the first insulating layer. A bottom of the elastic element is bonded to the annular opening of the second insulating layer with an adhesive.

Another aspect of the present invention is to provide a method for manufacturing a membrane switch circuit and a button using the membrane switch circuit.

The manufacturing method according to another preferred embodiment of the present invention is used to manufacture a button. In the manufacturing method, firstly, a substrate is prepared. Next, the manufacturing method prepares a thin film circuit, and the thin film circuit has a switch. Subsequently, the manufacturing method forms a first insulating layer on the thin film circuit. The first insulating layer has a hole, and the switch is exposed in the hole. Afterwards, the manufacturing method forms a second insulating layer on the first insulating layer. The second insulating layer has an annular opening, and the annular opening surrounds the hole of the first insulating layer. Then, the manufacturing method prepares an elastic member. A bottom of the elastic element matches the annular opening of the second insulating layer. Next, the manufacturing method utilizes an adhesive to bond the bottom of the elastic element to the annular opening of the second insulating layer. Afterwards, the manufacturing method prepares a keycap. Next, the manufacturing method prepares a supporting device, and the supporting device has a first end and a second end. Finally, the manufacturing method movably connects the first end to the keycap, and movably connects the second end to the substrate.

The manufacturing method according to another preferred embodiment of the present invention is used to manufacture a membrane switch circuit. In the manufacturing method, first, a thin film circuit is formed, and the thin film circuit has a switch. Next, the manufacturing method forms a first insulating layer on the film circuit, the first insulating layer has a hole, and the switch is exposed in the hole. Finally, the manufacturing method forms a second insulating layer on the first insulating layer. The second insulating layer has an annular opening, and the annular opening surrounds the hole of the first insulating layer.

Therefore, the membrane switch circuit and the key using the membrane switch circuit according to the present invention provide an insulating layer having an annular opening. When the elastic element is adhered to the membrane switch circuit with an adhesive, the annular opening can help the elastic element to be adhered to a designated position accurately. Furthermore, the annular opening prevents the adhesive from overflowing the annular opening. Thereby, during the manufacturing process of the button, the bonding of the elastic element will be more accurate, thereby increasing the manufacturing quality and product yield of the button.

The advantages and spirit of the present invention can be further understood through the following detailed description of the invention and the accompanying drawings.

Description of drawings

Fig. 1 is an assembled and exploded perspective view of a key according to a preferred embodiment of the present invention.

FIG. 2 is a cross-sectional view of the button in FIG. 1 .

FIG. 3 is a partially enlarged view of the button in FIG. 2 .

FIG. 4 is a flow chart of a method for manufacturing the button in FIG. 1 .

Fig. 5 is an assembled and exploded perspective view of a membrane switch circuit according to a preferred embodiment of the present invention.

FIG. 6 is a cross-sectional view of the membrane switch circuit in FIG. 5 .

FIG. 7 is a flow chart of a manufacturing method of the membrane switch circuit in FIG. 5 .

Description of main component symbols

1: Button 10: Substrate

12: Thin film circuit 14: The first insulating layer

16: Second insulation layer 18: Elastic element

20: Keycap 22: Support device

120: switch 1200: first conductive part

1202: second conductive part 140: hole

160: Ring opening 180: Bottom

182: Contact part 2: Membrane switch circuit

S14-S26: Step process S30-S36: Step process

Detailed ways

Please refer to FIG. 1 . FIG. 1 is an exploded perspective view of a button 1 according to a preferred embodiment of the present invention. As shown in FIG. 1 , the button 1 includes a substrate 10 , a thin film circuit 12 , a first insulating layer 14 , a second insulating layer 16 , an elastic element 18 , a keycap 20 and a supporting device 22 .

As shown in FIG. 1 , the thin film circuit 12 has a switch 120 . In this specific embodiment, the thin film circuit 12 is generally made of polyethylene terephthalate (PET), but not limited thereto. In this embodiment, the switch 120 may include a first conductive portion 1200 and a second conductive portion 1202 separated from the first conductive portion 1200 . In other words, since the first conductive portion 1200 and the second conductive portion 1202 are separated and not electrically connected, the switch 120 is in an off state at this time. In actual application, the first conductive part 1200 and the second conductive part 1202 can be coated with a carbon paste (not shown in the figure), and the carbon paste is used to increase the first conductive part 1200 and the second conductive part 1200. Part 1202 for abrasion resistance.

As shown in FIG. 1 , the first insulating layer 14 is formed on the thin film circuit 12 , the first insulating layer 14 has a hole 140 , and the switch 120 is exposed in the hole 140 . In this specific embodiment, the first insulating layer 14 is made of a resin, and its main function is insulation, but not limited thereto. In addition, in this specific embodiment, the first insulating layer 14 can be manufactured by an ultraviolet catalysis method, but not limited thereto.

The second insulating layer 16 is formed on the first insulating layer 14 , the second insulating layer 16 has an annular opening 160 , and the annular opening 160 surrounds the hole 140 of the first insulating layer 14 . In this specific embodiment, the second insulating layer 16 is made of a resin and has an insulating function, but not limited thereto. In addition, in this specific embodiment, the second insulating layer 16 can be manufactured by a thermal baking method, but it is not limited thereto. In actual application, the second insulating layer 16 can have a specific color, and the specific color can be the same as or matched with an appearance color of the keycap 20 to achieve an aesthetic effect.

Please refer to FIG. 2 and FIG. 3 , FIG. 2 is a cross-sectional view of the button 1 in FIG. 1 . FIG. 3 is a partially enlarged view of the button 1 in FIG. 2 . As shown in FIGS. 2 and 3 , a bottom 180 of the elastic member 18 can fit into the annular opening 160 of the second insulating layer 16 and be bonded to the annular opening 160 of the second insulating layer 16 . The elastic element 18 can have a contact portion 182 . The elastic element 18 is generally made of rubber, but not limited thereto. In this specific embodiment, the bottom 180 of the elastic element 18 is bonded to the annular opening 160 by an adhesive (not shown in the figure), but not limited thereto. In this specific embodiment, the shape of the elastic element 18 may be a dome, but not limited thereto.

In this embodiment, the supporting device 22 is movably connected to the keycap 20 and the base plate 10 . The supporting device 22 can support the keycap 20 to move vertically relative to the base plate 10 . When the keycap 20 is pressed by an external force, the elastic element 18 is deformed, and the contact portion 182 of the elastic element 18 contacts the switch 120 to turn on the switch 120 . Further, as the elastic element 18 is pressed down in response to the movement of the keycap 20 , the contact portion 182 simultaneously contacts the first conductive portion 1200 and the second conductive portion 1202 to form an electrical connection, thereby turning on the switch 120 .

Thereby, when the elastic element 18 is bonded to the annular opening 160 of the second insulating layer 16 via the bottom 180 with the adhesive, the annular opening 160 can assist the elastic element 18 to be adhered to a designated position accurately. In addition, the annular opening 160 can also prevent the adhesive from overflowing the annular opening 160 .

Please refer to FIG. 4 , and refer to FIGS. 1 to 3 together. FIG. 4 is a flow chart of the manufacturing method of the button 1 in FIG. 1 . According to the manufacturing method of a preferred embodiment of the present invention, firstly, step S10 is performed to prepare a substrate 10 .

Next, the manufacturing method according to a preferred embodiment of the present invention executes step S12 to prepare a thin film circuit 12 . The thin film circuit 12 has a switch 120 . In this specific embodiment, the thin film circuit 12 is generally made of polyethylene terephthalate, but not limited thereto. In this embodiment, the switch 120 may include a first conductive portion 1200 and a second conductive portion 1202 separated from the first conductive portion 1200 . In other words, since the first conductive portion 1200 and the second conductive portion 1202 are separated and not electrically connected, the switch 120 is in an off state at this time. In actual application, the first conductive part 1200 and the second conductive part 1202 can be coated with a carbon glue (not shown in the figure), and the carbon glue is used to increase the resistance of the first conductive part 1200 and the second conductive part 1202. Abrasive.

Then, the manufacturing method according to a preferred embodiment of the present invention executes step S14 to form a first insulating layer 14 on the thin film circuit 12 . The first insulating layer 14 has a hole 140 , and the 120 is exposed in the hole 140 . In this specific embodiment, the first insulating layer 14 is made of a resin, and its main function is insulation, but not limited thereto. In addition, in this specific embodiment, the first insulating layer 14 can be manufactured by an ultraviolet catalysis method, but not limited thereto.

Next, the manufacturing method according to a preferred embodiment of the present invention executes step S16 to form a second insulating layer 16 on the first insulating layer 14 . The second insulating layer 16 has an annular opening 160 , and the annular opening 160 surrounds the hole 140 of the first insulating layer 14 . In this specific embodiment, the second insulating layer 16 is made of a resin and has an insulating function, but not limited thereto. In addition, in this specific embodiment, the second insulating layer 16 can be manufactured by a thermal baking method, but it is not limited thereto. In actual application, the second insulating layer 16 can have a specific color, and the specific color can be the same as or matched with an appearance color of the keycap 20 to achieve an aesthetic effect.

Afterwards, the manufacturing method according to a preferred embodiment of the present invention executes step S18 to prepare an elastic element 18 , and a bottom 180 of the elastic element 18 matches the annular opening 160 of the second insulating layer 16 . In this specific embodiment, the elastic element 18 is substantially made of rubber, but not limited thereto.

Then, the manufacturing method according to a preferred embodiment of the present invention performs step S20 , using an adhesive to bond the bottom 180 of the elastic element 18 to the annular opening 160 of the second insulating layer 16 . In this particular embodiment, the annular opening 160 can assist the elastic member 18 to adhere accurately to the designated position. In addition, the annular opening 160 can also prevent the adhesive from overflowing the annular opening 160 .

Next, the manufacturing method according to a preferred embodiment of the present invention executes step S22 to prepare a keycap 20 .

Afterwards, the manufacturing method according to a preferred embodiment of the present invention executes step S24 to prepare a supporting device 22 . In this embodiment, the supporting device 22 has a first end 220 and a second end 222 .

Finally, the manufacturing method according to a preferred embodiment of the present invention executes step S26 , the first end 220 is movably connected to the keycap 20 , and the second end 22 is movably connected to the substrate 10 .

In this embodiment, the elastic element 18 may include a contact portion 182 . When the user applies an external force to the keycap 20, as the elastic member 18 is pressed down in response to the movement of the keycap 20, the contact portion 182 simultaneously contacts the first conductive portion 1200 and the second conductive portion 1202 to form an electrical connection, and then Switch 120 is turned on.

Thereby, when the elastic element 18 is bonded to the annular opening 160 of the second insulating layer 16 via the bottom 180 with the adhesive, the annular opening 160 can assist the elastic element 18 to be adhered to a designated position accurately. In addition, the annular opening 160 can also prevent the adhesive from overflowing the annular opening 160 .

Please refer to FIG. 5 . FIG. 5 is an assembled and exploded perspective view of the membrane switch circuit 2 according to a preferred embodiment of the present invention. In this preferred embodiment, the membrane switch circuit 2 cooperates with an elastic element 18 . As shown in FIG. 5 , the membrane switch circuit 2 includes a membrane circuit 12 , a first insulating layer 14 and a second insulating layer 16 .

As shown in FIG. 5 , the thin film circuit 12 has a switch 120 . In this specific embodiment, the thin film circuit 12 is generally made of polyethylene terephthalate, but not limited thereto. In this embodiment, the switch 120 may include a first conductive portion 1200 and a second conductive portion 1202 separated from the first conductive portion 1200 . In other words, since the first conductive portion 1200 and the second conductive portion 1202 are separated and not electrically connected, the switch 120 is in an off state at this time. In actual application, the first conductive part 1200 and the second conductive part 1202 can be coated with a carbon glue (not shown in the figure), and the carbon glue is used to increase the resistance of the first conductive part 1200 and the second conductive part 1202. Abrasive.

As shown in FIG. 5 , the first insulating layer 14 is formed on the thin film circuit 12 , the first insulating layer 14 has a hole 140 , and the switch 120 is exposed in the hole 140 . In this specific embodiment, the first insulating layer 14 is made of a resin, and its main function is insulation, but not limited thereto. In addition, in this specific embodiment, the first insulating layer 14 can be manufactured by an ultraviolet catalysis method, but not limited thereto.

The second insulating layer 16 is formed on the first insulating layer 14 , the second insulating layer 16 has an annular opening 160 , and the annular opening 160 surrounds the hole 140 of the first insulating layer 14 . In this specific embodiment, the second insulating layer 16 is made of a resin and has an insulating function, but not limited thereto. In addition, in this specific embodiment, the second insulating layer 16 can be manufactured by a thermal baking method, but it is not limited thereto. In actual application, the second insulating layer 16 may have a specific color to achieve an aesthetic effect.

Please refer to FIG. 6 , which is a cross-sectional view of the membrane switch circuit 2 in FIG. 5 . In one embodiment, a bottom 180 of the elastic member 180 is bonded to the annular opening 160 of the second insulating layer 16 by an adhesive (not shown). The elastic element 18 can have a contact portion 182 . The elastic element 18 is generally made of rubber, but not limited thereto. In this specific embodiment, the bottom 180 of the elastic element 18 is bonded to the annular opening 160 by an adhesive (not shown in the figure), but not limited thereto. In this specific embodiment, the shape of the elastic element 18 may be a dome, but not limited thereto.

In a specific embodiment, as the elastic element 18 is pressed down, the contact portion 182 simultaneously contacts the first conductive portion 1200 and the second conductive portion 1202 to form an electrical connection, thereby turning on the switch 120 .

Thereby, when the elastic element 18 is bonded to the annular opening 160 of the second insulating layer 16 via the bottom 180 with the adhesive, the annular opening 160 can assist the elastic element 18 to be adhered to a designated position accurately. In addition, the annular opening 160 can also prevent the adhesive from overflowing the annular opening 160 .

Please refer to FIG. 7 , and refer to FIG. 5 and FIG. 6 together. FIG. 7 is a flow chart of the manufacturing method of the membrane switch circuit 2 in FIG. 5 . In this specific embodiment, the membrane switch circuit 2 cooperates with an elastic element 18 . According to the manufacturing method of a preferred embodiment of the present invention, firstly, step S30 is performed to form a thin film circuit 12 . The thin film circuit 12 has a switch 120 . In this specific embodiment, the thin film circuit 12 is generally made of polyethylene terephthalate, but not limited thereto.

In this embodiment, the switch 120 may include a first conductive portion 1200 and a second conductive portion 1202 separated from the first conductive portion 1200 . In other words, since the first conductive portion 1200 is separated from the second conductive portion 1202 and has no electrical connection, the switch 120 is in a closed state at this time. In practical applications, the first conductive portion 1200 and the second conductive portion 1202 can be coated with a carbon glue to increase the wear resistance of the first conductive portion 1200 and the second conductive portion 1202 .

Then, the manufacturing method according to a preferred embodiment of the present invention executes step S32 to form a first insulating layer 14 on the thin film circuit 12 . The first insulating layer 14 has a hole 140 , and the 120 is exposed in the hole 140 . In this specific embodiment, the first insulating layer 14 is made of a resin, and its main function is insulation, but not limited thereto. In addition, in this specific embodiment, the first insulating layer 14 can be manufactured by an ultraviolet catalysis method, but not limited thereto.

Next, the manufacturing method according to a preferred embodiment of the present invention executes step S34 to form a second insulating layer 16 on the first insulating layer 14 . The second insulating layer 16 has an annular opening 160 , and the annular opening 160 surrounds the hole 140 of the first insulating layer 14 . In this specific embodiment, the second insulating layer 16 is made of a resin and has an insulating function, but it is not limited thereto. In addition, in this specific embodiment, the second insulating layer 16 can be manufactured by a thermal baking method, but it is not limited thereto. In actual application, the second insulating layer 16 may have a specific color to achieve an aesthetic effect.

Then, the manufacturing method according to a preferred embodiment of the present invention executes step S36 , using an adhesive to bond the bottom 180 of the elastic element 18 to the annular opening 160 of the second insulating layer 16 . In this particular embodiment, the annular opening 160 can assist the elastic member 18 to adhere accurately to the designated position. In addition, the annular opening 160 can also prevent the adhesive from overflowing the annular opening 160 . In this specific embodiment, the elastic element 18 is substantially made of rubber, but not limited thereto.

In this embodiment, the elastic element 18 may include a contact portion 182 . As the elastic element 18 is pressed down, the contact portion 182 simultaneously contacts the first conductive portion 1200 and the second conductive portion 1202 to form an electrical connection, thereby turning on the switch 120 .

Compared with the prior art, according to the button and the membrane circuit switch of the present invention, when the elastic element is bonded to the membrane switch circuit by an adhesive, the annular opening can help the elastic element to be adhered to the designated position accurately. Furthermore, the annular opening prevents the adhesive from overflowing the annular opening. Thereby, during the manufacturing process of the button, the bonding of the elastic element will be more accurate, thereby increasing the manufacturing quality and product yield of the button.

By virtue of the above detailed description of the preferred embodiments, it is hoped that the features and spirit of the present invention can be described more clearly, and the scope of the present invention is not limited by the preferred embodiments disclosed above. On the contrary, the intention is to cover various modifications and equivalent arrangements within the scope of the invention. Therefore, the scope of the present invention should be construed in the broadest way based on the above description so as to cover all possible modifications and equivalent arrangements.

Claims (38)

1. button comprises:

One substrate;

One thin film circuit, this thin film circuit has a switch;

One first insulating barrier, this first insulating barrier is formed on this thin film circuit, and this first insulating barrier has a hole, and this switch is exposed in this hole;

One second insulating barrier, this second insulating barrier are formed on this first insulating barrier, and this second insulating barrier has an annular opening, and this annular opening is around this hole of this first insulating barrier;

One flexible member, a bottom of this flexible member cooperate this annular opening of this second insulating barrier and are bonded to this annular opening of this second insulating barrier, and this flexible member has a contact portion;

One keycap; And

One bracing or strutting arrangement, this bracing or strutting arrangement be movably connected this keycap and this substrate, this bracing or strutting arrangement supports this keycap and does with respect to this substrate vertical moving;

Wherein when this keycap during by a pressed by external force, this flexible member distortion, this contact portion of this flexible member contacts this switch and then opens this switch.

2. button according to claim 1, wherein this thin film circuit is made by a PETG (PET) substantially.

3. button according to claim 1, wherein this flexible member is made by a rubber substantially.

4. button according to claim 1, wherein this flexible member is shaped as dome body.

5. button according to claim 1, wherein this first insulating barrier is made by a resin.

6. button according to claim 1, wherein this second insulating barrier is made by a resin.

7. button according to claim 1, wherein this bottom of this flexible member is to utilize an adhesive and this annular opening bonding.

8. button according to claim 1, wherein this switch comprises one first current-carrying part and second current-carrying part that separates with this first current-carrying part, along with this flexible member is depressed in response to the mobile of this keycap, this contact portion contacts this first current-carrying part and this second current-carrying part simultaneously and then opens this switch.

9. button according to claim 8, wherein this first current-carrying part and this second current-carrying part and by a carbon paste coating.

10. button according to claim 1, this second insulating barrier has a particular color.

11. one kind in order to make the method for a button, this method comprises the following steps:

Prepare a substrate;

Prepare a thin film circuit, this thin film circuit has a switch;

Form one first insulating barrier on this thin film circuit, this first insulating barrier has a hole, and this switch is exposed in this hole;

Form one second insulating barrier on this first insulating barrier, this second insulating barrier has an annular opening, and this annular opening is around this hole of this first insulating barrier;

Prepare a flexible member, a bottom of this flexible member cooperates this annular opening of this second insulating barrier, and utilizes this bottom of bonding this flexible member of an adhesive this annular opening to this second insulating barrier;

Prepare a keycap; And

Prepare a bracing or strutting arrangement, this bracing or strutting arrangement has one first end and one second end, this first end is movably connected in this keycap, and this second end is movably connected in this substrate.

12. according to claim 11 a described method, wherein this thin film circuit is made by a PETG (PET) substantially.

13. according to claim 11 a described method, wherein this flexible member is made by a rubber substantially.

14. according to claim 11 a described method, wherein this flexible member is shaped as dome body.

15. according to claim 11 a described method, wherein this first insulating barrier is made by a resin.

16. according to claim 11 a described method, wherein this second insulating barrier is made by a resin.

17. according to claim 11 a described method, wherein this switch comprises one first current-carrying part and second current-carrying part that separates with this first current-carrying part, this flexible member comprises a contact portion, along with this flexible member is depressed in response to the mobile of this keycap, this contact portion contacts this first current-carrying part and this second current-carrying part simultaneously and then opens this switch.

18. according to claim 17 a described method, wherein this first current-carrying part and this second current-carrying part and by a carbon paste coating.

19. according to claim 11 a described method, wherein this second insulating barrier has a particular color.

20. a film switch circuit, this film switch circuit cooperates a flexible member, and this film switch circuit comprises:

One thin film circuit, this thin film circuit has a switch;

One first insulating barrier, this first insulating barrier is formed on this thin film circuit, and this first insulating barrier has a hole, and this switch is exposed in this hole; And

One second insulating barrier, this second insulating barrier is formed on this first insulating barrier, this second insulating barrier has an annular opening, and this annular opening is around this hole of this first insulating barrier, and wherein a bottom of this flexible member is to utilize an adhesive to be bonded to this annular opening of this second insulating barrier.

21. according to claim 20 a described film switch circuit, wherein this thin film circuit is made by a PETG (PET) substantially.

22. according to claim 20 a described film switch circuit, wherein this first insulating barrier is made by a resin.

23. according to claim 20 a described film switch circuit, wherein this second insulating barrier is made by a resin.

24. according to claim 20 a described film switch circuit, wherein this switch comprises one first current-carrying part and second current-carrying part that separates with this first current-carrying part, this flexible member comprises a contact portion, along with this flexible member is depressed, this contact portion contacts this first current-carrying part and this second current-carrying part simultaneously and then opens this switch.

25. according to claim 24 a described film switch circuit, wherein this first current-carrying part and this second current-carrying part and by a carbon paste coating.

26. according to claim 20 a described film switch circuit, this flexible member be shaped as dome body.

27. according to claim 20 a described film switch circuit, this flexible member is made by a rubber substantially.

28. according to claim 20 a described film switch circuit, this second insulating barrier has a particular color.

29. one kind in order to make the method for a film switch circuit, this method comprises the following steps:

Form a thin film circuit, this thin film circuit has a switch;

Form one first insulating barrier on this thin film circuit, this first insulating barrier has a hole, and this switch is exposed in this hole; And

Form one second insulating barrier on this first insulating barrier, this second insulating barrier has an annular opening, and this annular opening is around this hole of this first insulating barrier.

30., also comprise the following steps: a bottom of a flexible member is bonded to this annular opening according to claim 29 a described method.

31. according to claim 30 a described method, this flexible member be shaped as dome body.

32. according to claim 30 a described method, this flexible member is made by a rubber substantially.

33. according to claim 29 a described method, wherein this thin film circuit is made by a PETG (PET) substantially.

34. according to claim 29 a described method, wherein this first insulating barrier is made by a resin.

35. according to claim 29 a described method, wherein this second insulating barrier is made by a resin.

36. according to claim 30 a described method, wherein this switch comprises one first current-carrying part and second current-carrying part that separates with this first current-carrying part, this flexible member has a contact portion, along with this flexible member is depressed, this contact portion contacts this first current-carrying part and this second current-carrying part simultaneously and then opens this switch.

37. according to claim 36 a described method, wherein this first current-carrying part and this second current-carrying part are by a carbon paste coating.

38. according to claim 30 a described method, this second insulating barrier has a particular color.

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