JPS5939391Y2 - Transparent touch key board switch - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a transparent touch keyboard switch with transparent contact portions.

1, 2, and 3 are plan views showing various parts of an example of a conventional transparent touch keyboard switch, and FIG. 4 is a sectional view showing an example of a conventional transparent touch keyboard switch. A transparent film that is easily displaced by external stress, 2 a movable electrode made of a continuous pattern of transparent conductive films formed in parallel on one surface (lower surface) of the transparent film, 3 a movable electrode of the film 1 4 is a hole provided in a portion of the spacer 3 corresponding to each pattern of the movable electrode 2; 5 is a transparent glass;
Reference numeral 6 denotes a fixed electrode made of a continuous pattern of transparent conductive film formed in parallel in a direction intersecting each pattern of the movable electrode 2 on the transparent glass 5 surface, and the movable electrode group and the fixed electrode group are separated by spacers. A matrix-like contact point that contacts through the holes 4 of 3 is formed.

The movable electrode group and the fixed electrode group are formed by etching a deposited transparent conductive film.

When a button is configured as described above and a certain movable electrode part is pushed downward by stress applied from the outside, it is displaced downward through the hole 4 and comes into contact with the corresponding fixed electrode part. The circuit connecting the movable electrode and the fixed electrode is turned on.

Furthermore, when the external stress applied to the movable electrode portion is removed, the movable electrode portion returns to its original state and comes out of contact with the fixed electrode portion, turning off the circuit.

In conventional transparent touch keyboard switches such as those mentioned above, a conductive film with a small resistivity of several tens of Ω/hole is used as a fixed electrode, but a conductive film with a resistivity of 103 Ω/hole is used as a movable electrode in consideration of wear resistance. Since it is necessary to use a transparent conductive film on which a certain amount of In2O3.5n02 or the like is vapor-deposited, there is a drawback that the resistance between the terminals of the switch increases.

Like conventional transparent touch keyboard switches, Kono's device operates with a slight displacement of the transparent film on which movable electrodes are provided, and has good transparency. The purpose is to provide the following.

5, 6, and 7 are plan views showing various parts of an embodiment of this invention, and FIG. 8 is a sectional view showing an embodiment of this invention. 4. 5 and 6 indicate the same or corresponding parts as the same reference numerals in FIGS. This is an auxiliary electrode made of a conductor that contacts across a band, and is a conductive film formed by vapor-depositing a substance with high conductivity such as Au.

In the above configuration, when a certain movable electrode part is pushed downward by stress applied from the outside, it is displaced downward through the hole 4 and comes into contact with the corresponding fixed electrode part, and the abutted movable electrode The circuit connecting the fixed electrode and the fixed electrode is turned on.

At this time, the signal is transmitted via the auxiliary electrode 7 with low resistance.

That is, the resistance between the terminals of the switch becomes smaller.

Further, since the auxiliary electrode 7 is formed of a highly transparent conductive film, the transparency, which is a characteristic of a transparent touch keyboard switch, is not impaired.

When the external stress applied to the movable electrode part is removed, the movable electrode part returns to its original state and comes out of contact with the fixed electrode part, turning off the circuit.

The above example shows a case where a conductive film with low resistivity is used as a fixed electrode, but when a conductive film with high resistivity formed on a transparent film is used as a fixed electrode, , an auxiliary electrode can also be provided on the fixed electrode side to reduce the resistance between the terminals.

9, 10, 11, and 12 are plan views showing various parts of another embodiment of this invention, and FIG. 13 is a sectional view showing another embodiment of this invention, 1, 2 in the figure
, 3, 4, and 7 indicate parts that are the same as or correspond to the same reference numerals in FIGS. 5, 6, 7, and 8, 8 is a transparent film, and 9 is a movable electrode on the transparent film 8 surface. A fixed electrode made of a transparent conductive film in a continuous pattern formed in parallel in a direction intersecting each pattern of 2, 10 is formed on a spacer 3 (lower surface) and is applied to each pattern of the fixed electrode 9 over the entire band. This is an auxiliary electrode made of a conductor that comes into contact with the electrode, and is a conductive film formed by vapor-depositing a substance with high conductivity such as Au.

In this embodiment, the signal is transmitted via the auxiliary electrodes 7 and 10 when the movable electrode part abuts the fixed electrode part and the circuit is configured.

As explained above, according to this invention, although a transparent conductive film with relatively excellent wear resistance is used in the contact part, the resistance between the terminals is reduced without compromising transparency. There is an advantage.

[Brief explanation of drawings]

1, 2, and 3 are plan views showing various parts of an example of a conventional transparent touch keyboard switch, FIG. 4 is a sectional view showing an example of a conventional transparent touch keyboard switch, and FIGS. 5 and 6 are 7 and 7 are plan views showing various parts of an embodiment of this invention, FIG. 8 is a sectional view showing an embodiment of this invention, and FIGS. 9, 10, 11, and 12 are FIG. 13 is a plan view showing various parts of another embodiment of this invention, and FIG. 13 is a sectional view showing another embodiment of this invention. In the figure, 1 is a transparent film, 2 is a movable electrode, 3 is a spacer, 4 is a hole provided in the spacer 3, 5 is transparent glass, 6 is a fixed electrode, 7 is an auxiliary electrode, 8 is a transparent film, 9 is a fixed electrode, and 10 is an auxiliary electrode. The same buttons and numerals in each figure indicate the same casing or corresponding parts.

Claims (1)

[Scope of utility model registration request] A group of movable electrodes each consisting of a transparent conductive film with a continuous pattern formed in parallel on a transparent and flexible film, and a group of movable electrodes formed on a transparent and smooth insulating material in a direction intersecting the pattern of the movable electrode group. a group of fixed electrodes each formed of a transparent conductive film in a continuous pattern and forming a matrix of contacts with the movable electrode group; a spacer inserted between the movable electrode group and the fixed electrode group; An insulating spacer having a hole in a portion corresponding to each contact point constituted by the movable electrode group and the fixed electrode group so that the movable electrode portion can be displaced and abutted on the fixed electrode portion; It is characterized by comprising an auxiliary electrode made of a conductor formed on a surface and in contact with each pattern of the movable electrode group over the entire band, and/or (and) in contact with each pattern of the fixed electrode group over the entire band. Transparent touch keyboard switch.