JPH0741891U - Transparent sheet switch - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a transparent sheet switch that is light, thin, short and small, and has a clear operation position and a good feel during operation. A transparent sheet switch in which a transparent upper sheet and a transparent lower sheet formed of a transparent member disposed on a surface portion having an electric function display device are superposed on each other, and a transparent upper sheet 27 corresponding to the function display is provided above the transparent upper sheet 27. And a transparent electrode layer 29 is formed on the lower surface of the bulge portion 28, a space is provided between the transparent lower sheets 22, and the transparent lower sheet 2 on the opposite surface is formed.
2 A transparent electrode layer 23 is formed on the upper surface.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a sheet switch, and more particularly to a sheet switch provided on a surface portion having a function display device such as a liquid crystal panel or a cathode ray tube.

[0002]

[Prior art]

 Conventionally, as a prior art in such a field, as a first conventional example, as shown in FIG. 6, a flat lower sheet 3 and an upper sheet 4 face each other on a display surface of a cathode ray tube 1 as a function display device. There is a transparent sheet switch 2 in which a transparent electrode 5 is provided on the surface and stacked with a spacer interposed. In this figure, 6 and 7 are tails of the lower sheet 3 and the upper sheet 4, and 8 is a circuit pattern.

As a second conventional example, as shown in FIG. 7, a plurality of vertical and horizontal switch bodies 11 are arranged on the upper surface of a printed circuit board 10, and a liquid crystal display panel is provided on the upper surface of a button 12 for operating the switches. There is a device having a push button switch 13 having a liquid crystal display function having a switch 14.

[0004]

[Problems to be solved by the device]

 However, in the case of the first conventional example, the above-mentioned switch is formed by stacking a plurality of sheets, and when operating the upper surface of the sheets, pressing the vicinity of the display area may not react. Therefore, even though the operation is displayed again, the operation feeling cannot be obtained, the operation position is unclear, and the operation stroke is a slight deflection at all. Therefore, no feeling of pressing is obtained, which gives the operator anxiety. In addition, since the pressure is applied with an unnecessarily large amount of force, it has been a factor of failure and malfunction.

Further, in the case of the second conventional example, since a plurality of push button switches are arranged on the printed circuit board, the operation position is clear, and the stroke is long, so that the feeling of operation can be obtained. However, since a plurality of pushbutton switches have to be arranged on the printed circuit board, there is a drawback that a lot of time is required for the mounting man-hours and wiring work.

Further, since it is composed of the switch mechanism section and the push button provided with the liquid crystal display device, a space in the height direction is required, and there has been a problem with downsizing of the device. For example, as shown in Fig. 7, when four types of up, down, left, and right arrows indicating the scroll direction are switched and displayed on the upper surface of a push button switch equipped with a liquid crystal display, the arrow is displayed on one independent button. Since the operation position is clear, there is no risk of misidentification, and the stroke is good, so the operation feel is good.

However, when a push button switch provided with a large number of liquid crystal displays is used, there is a drawback that the number of steps for mounting the switch on the printed board and the cost of the push button switch and the like become extremely high. It is an object of the present invention to provide a transparent sheet switch which eliminates the above-mentioned problems, achieves lightness, thinness, shortness and size, and has a clear operation position and a good feel during operation.

[0008]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention provides a transparent sheet switch in which a transparent upper sheet and a transparent lower sheet formed of a transparent member disposed on a surface portion having an electrical function display device are overlapped with each other. The transparent upper sheet corresponding to the above is formed with an upward bulge and a transparent electrode is formed on the lower surface of the bulge, and a space is provided between the transparent lower sheets, and the transparent lower side of the opposite surface is formed. A transparent electrode is formed on the upper surface of the sheet.

[0009]

[Action]

 According to the present invention, as described above, when the bulging portion provided on the transparent upper sheet of the transparent sheet switch is pressed, the bulging portion is inverted and the transparent electrodes formed on the lower surface of the bulging portion face each other. Close the circuit by contacting the transparent electrode on the transparent lower sheet. When the pressure on the bulging portion is released, the original state is restored and the transparent electrode is separated, so that the electric circuit is opened.

[0010]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is an exploded perspective view of a transparent sheet switch showing a first embodiment of the present invention, and FIG. 2 is an enlarged sectional view of its main part. As shown in FIG. 1, a transparent sheet switch 21 is arranged on a cathode ray tube 20 as a function display device.

The transparent sheet switch 21 has a sheet-like spacer 26 having an opening (not shown) formed between a transparent lower sheet 22 and a transparent upper sheet 27, and is laminated with an adhesive or an adhesive material. It was done. The transparent lower sheet 22, the transparent upper sheet 27, and the spacer 26 are all formed of a transparent plastic film, and are generally made of polyester or polycarbonate material.

In addition, a bulge portion 28, which serves as a switch operation portion, is integrally formed on the transparent upper sheet 27 by drawing a plastic film. Further, a transparent electrode layer consisting of a plurality of rows is provided on either one of the facing surfaces between the transparent lower sheet 22 and the transparent upper sheet 27, and a plurality of transparent electrode layers forming a right angle with the upper transparent electrode layer is provided on the other side. And are arranged in a matrix. For example, as shown in FIG. 1, a transparent electrode layer 23 is formed in the X direction on the upper surface of the transparent lower sheet 22, and a transparent electrode layer 29 is formed in the Y direction on the lower surface of the transparent upper sheet 27. .

These transparent electrode layers 23 and 29 form circuit patterns 25 and 31 on the edges of the sheet and are converged on the tails 24 and 30, and the tip ends of these tails 24 and 30 are connected to the connector. It is inserted in (not shown) to be electrically connected. Then, by pressing the bulging portion 28 with a fingertip, the bulging portion 28 is inverted, and the transparent electrode layer 29 provided on the back surface of the bulging portion 28 is transparent to the transparent lower sheet 22, as shown in FIG. The electric path is closed by contacting the electrode layer 23. When the fingertip is removed from the bulging portion 28, the bulging portion 28 returns to its original state due to the elastic force, the transparent electrode layers 23 and 29 are separated, and the electric path is opened.

As the transparent electrode material, ITO (Indium-Tin-Oxide) is generally used because of its transparency and workability, but the material is not limited to this and various materials are used. be able to. FIG. 3 is an enlarged perspective view of a transparent sheet switch according to a second embodiment of the present invention.

In the above-described first embodiment, the sheet-like spacers 26 having the openings are provided, while in this embodiment, a plurality of spacers formed on the upper surface of the transparent lower sheet 41 are provided. A dot spacer 48 having dot-shaped minute protrusions is provided between the transparent electrode layers 42. Further, the plurality of transparent electrode layers 42 are connected by the circuit pattern 44 formed on the edge of the transparent lower sheet 41 and the tail 43.

On the other hand, the transparent upper sheet 51 is integrally formed with a plurality of upward bulging portions 52 serving as a switch operating portion. The lower surface of the transparent upper sheet 51 including the lower surface of the bulging portions 52 is formed. , A transparent electrode layer 53 is formed, and the transparent electrode layer 42 and the transparent electrode layer 53 are arranged in a matrix so as to intersect each other. The plurality of transparent electrode layers 53 are connected by the circuit pattern 55 formed on the edge of the transparent upper sheet 51 and the tail 54.

Here, although the transparent upper sheet 51 is provided with the bulge portion 52, unlike the conventional general sheet switch, since the entire sheet requires transparency, the contact is opaque. Do not use a metal disc or the like. Therefore, the transparent sheet switch 50 is obtained by laminating the transparent upper sheet 51 and the transparent lower sheet 41 configured as above with an adhesive material or the like.

FIG. 4 is an enlarged perspective view of a transparent sheet switch according to a third embodiment of the present invention. As shown in FIG. 4, a circuit pattern 63 having a plurality of comb-shaped transparent electrodes 62 is formed on the transparent lower sheet 61, and the circuit pattern 63 is converged on a tail 64. On the other hand, the transparent upper sheet 71 is integrally formed with bulging portions 72 which serve as a plurality of operating portions, and independent transparent electrode contacts 73 are provided only on the back surface of the bulging portions 72. Then, the transparent upper sheet 71 and the transparent lower sheet 61 are laminated with an adhesive material or the like to form the transparent sheet switch 60. The spacers required in the first and second embodiments are not always necessary.

Therefore, when the bulging portion 72 is pressed with a fingertip, the bulging portion 72 is inverted and the transparent electrode contact 73 provided on the back surface of the bulging portion 72 bridges the comb-shaped transparent electrode 62 to close the electric path. When the pressing of the bulging portion 72 is released, the original state is restored and the electric circuit is opened. In the first and second embodiments, the spacer for forming the space between the upper and lower transparent electrode layers is provided. However, in this embodiment, such a spacer is not necessary, so that the transparency should be improved. You can

Further, as shown in FIG. 5, a transparent bridging contact 82 is formed below the bulge portion of the transparent upper sheet in a shape in which the bowl is only made of a transparent material, and a film is formed on a part of the back surface thereof. You may arrange | position the synthetic resin piece 81 which formed. According to this structure, it is possible to improve the operational feeling when operating the bulging portion of the transparent upper sheet, and it is possible to easily set various operational feelings.

Further, a magnetic body having magnetic powder adhered is provided on the back surface of the bulge portion of the transparent upper sheet, and a magnet that generates a magnetic repulsive force (repulsive force due to the same pole) on the transparent lower sheet side in opposition to this. Can be provided. With this configuration, even if the thickness of the sheet is extremely thin, it is possible to prevent the bulge portion from being restored to its original state due to the repulsive action of the magnet. Further, the repulsive force of the magnet helps the bulging portion to return, so that a good operational feeling can be maintained for a long period of time.

It should be noted that the present invention is not limited to the above embodiments, and various modifications can be made within the scope of the present invention, and these modifications are not excluded from the scope of the present invention.

[0023]

[Effect of device]

 As described in detail above, according to the present invention, the following effects can be obtained. (1) By providing a bulge on the surface of the transparent upper sheet switch, the whole is transparent like a conventional transparent sheet switch, and the top surface is flat, so the operating position is unclear. It solves problems such as switch operation in the state of hand gripping such as pressing again at the time of operation or pressing with more force than necessary, enabling speedy business processing, display and bulging part. It is possible to set a very clear operation position from the shape of.

(2) This bulge allows the bulge provided on the surface of the transparent sheet switch not to be operated by a finger touching the flat surface in the conventional hand-surrounding state but to be reversed. Since the pressing stroke can be made large and the feeling of operation at the fingertip can be obtained, the anxiety of the pressing operation can be eliminated. (3) Since the bulge portion is provided at the operation position of the transparent sheet switch, the stroke of the bulge portion serves as a cushion even with frequent operations, and fatigue of the fingertip can be greatly reduced. Therefore, it is possible to prevent the tendonitis caused by these operations.

(4) Although the bulging portion is provided on the upper surface of the transparent sheet switch, since the bulging portion is formed of a transparent body, the screen display of the function display device arranged below is displayed. There is no misunderstanding or glare. Further, the convex lens effect of the bulge portion enlarges the screen display, and a clearer display is possible. (5) By providing a bulge on the surface of the transparent sheet switch, the shape of the display and the bulge will not be pressed again at the time of operation, or the bulge will not be pressed by an unnecessary force. As a result, the pressing force stroke can be increased, and the reliability of the operation can be increased.

(6) Although the bulge is provided at the operation position on the upper surface of the transparent sheet switch, the structure does not use the elastic contact plate made of metal, so that the transparency of the transparent sheet switch body is impaired. Instead, it can be made transparent, and at the same time, it can give a fingertip-friendly operation feeling due to a stroke that has not been obtained in the past. (7) The transparent contact is independently formed on the back surface of the bulge of the transparent upper sheet. By adopting the bridge contact method, the switch can be very thin even if the transparent electrode is very thin to improve the transparency. Accidents such as electrode disconnection and peeling can be prevented against complicated deformation of the bulge during operation, and even if there are few key parts to operate, the circuit pattern does not become complicated and can be easily performed. Can handle.

(8) A synthetic resin piece formed of a transparent body below the bulge portion of the transparent upper sheet in a shape in which the bowl is turned down, and a transparent bridging contact point made of a conductive film on a part of the back surface thereof. By arranging, the operation feeling can be improved, and various operation feelings can be easily set. (9) A magnetic body made of magnetic powder is provided on the back surface of the bulge portion of the transparent upper sheet, and a magnet for generating a magnetic repulsive force (repulsive force due to the same pole) is provided on the transparent lower sheet side facing this. Thus, even if the thickness of the sheet is extremely thin, it is possible to prevent the bulge portion from being deformed and not returning to the original state due to the repulsive action of the magnet. Further, the repulsive force of the magnet helps the bulging part to return, so that a good feeling of operation can be maintained for a long period of time.

Further, not only the thickness of the sheet and the shape of the bulging portion, but also the operating force can be adjusted by the magnetic material of the bulging portion of the transparent upper sheet.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a transparent sheet switch according to a first embodiment of the present invention.

FIG. 2 is an enlarged sectional view of an essential part of the transparent sheet switch showing the first embodiment of the present invention.

FIG. 3 is an enlarged perspective view of an essential part of a transparent sheet switch according to a second embodiment of the present invention.

FIG. 4 is an enlarged exploded perspective view of a main part of a transparent sheet switch showing a third embodiment of the present invention.

FIG. 5 is a perspective view of a synthetic resin piece of a transparent sheet switch showing a third embodiment of the present invention.

FIG. 6 is a perspective view of a transparent sheet switch showing a first conventional example.

FIG. 7 is an exploded perspective view of a push button switch showing a second conventional example.

[Explanation of symbols]

 21, 50, 60 Transparent sheet switch 22, 41, 61 Transparent lower sheet 23, 29, 42, 53 Transparent electrode layer 24, 30, 43, 54, 64 Tail 26 Spacer 27, 51, 71 Transparent upper sheet 28, 52, 72 bulge 25, 31, 44, 55, 63 circuit pattern 48 dot spacer 62 comb-shaped transparent electrode 73 transparent electrode contact 81 synthetic resin piece 82 transparent bridging contact

Claims (5)

[Scope of utility model registration request] 1. A transparent sheet switch in which a transparent upper sheet and a transparent lower sheet formed of a transparent member disposed on a surface portion having an electrical function display device are overlapped, and the transparent upper sheet corresponding to the function display is provided. A bulge upward and a transparent electrode formed on the lower surface of the bulge, a space is provided between the transparent lower sheets, and a transparent electrode is formed on the upper surface of the transparent lower sheet on the opposite surface. A transparent sheet switch featuring. 2. A plurality of rows of transparent electrode layers are provided on either one of the facing surfaces of the transparent upper sheet and the transparent lower sheet, and a plurality of rows of transparent electrode layers intersect with the plurality of rows of transparent electrode layers on the other side. The transparent sheet switch according to claim 1, further comprising: 3. The transparent lower sheet is provided with a circuit pattern having at least two opposing transparent electrode portions, and independent transparent electrode contacts bridging the electrode portions are formed on the back surface of the bulging portion of the transparent upper sheet. The transparent sheet switch according to claim 1, wherein the transparent sheet switch is formed. 4. A transparent resin sheet is formed below the bulge portion of the transparent upper sheet in the shape of a transparent bowl, and a synthetic resin piece having a transparent bridging contact is disposed on the back surface thereof. Item 1. The transparent sheet switch according to item 1. 5. The transparent sheet switch according to claim 1, wherein magnetic powder is attached to the back surface of the bulge portion of the transparent upper sheet, and a magnetic body that generates magnetic repulsive force is disposed below the magnetic powder.