JPS6025788Y2 - Electrode array device for data input panel - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an electrode arrangement device for a data input panel using a pressure-sensitive variable resistance sheet.

Conventionally, this type of device has a plurality of first conductors 2, 2 arranged in one direction on one surface of a printed circuit board 1, as shown in FIG. A plurality of second conductors 3, 3 arranged to intersect with the conductors 2, 2 of
and a first conductor 2 as shown in FIG.
, 2 and the second conductors 3, 3, a comb-shaped first electrode 4, 4 is provided on the first conductor 2, 2, and a part of the second conductor 3, 3 is further provided with a through hole. Printed circuit board 1
A comb-shaped second electrode 6 is led out on one surface of the
. However, the electrodes 4 and 6 are arranged in the same direction as shown in FIG. are made to be equal.

For this reason, between a pair of identical conductors adjacent to each other in parallel, the distance between the electrodes provided on each conductor, for example, the second
If part A in the figure is pressed incorrectly, the action of the pressure-sensitive variable resistance sheet 7 will cause the electrode 4 of the first conductor in the first row and the second electrode paired with the first electrode 4 in the second row to The electrode 6 was electrically connected, which caused an erroneous signal to be generated.

This idea attempts to eliminate these shortcomings.
An embodiment of this invention will be explained below with reference to the drawings.

That is, on one surface of the printed circuit board 1, a plurality of first conductors 2, 2 are arranged parallel to each other in one direction at a predetermined interval, and on the other surface of the printed circuit board 1, a plurality of first conductors 2, 2 are arranged in parallel. The second conductor 3.3 is arranged to intersect with the first conductor 2,2.

At the intersection of the first conductors 2, 2 and the second conductor 3゜3, the first conductors 2, 2 are provided with a plurality of teeth 12.12 extending therefrom and a connecting portion 13 connecting these teeth. A first electrode 4 formed in a comb shape is provided.

Further, a part of the second conductors 3, 3 is led out onto one surface of the printed circuit board 1 through through holes 5, 5, and a tooth of the electrode 4 of the younger brother 1 is provided in this part, extending from this through hole. A comb-shaped second electrode 6°6 is formed by a plurality of teeth 14.14 arranged adjacent to each other at regular intervals and a connecting portion 15 that connects these teeth. There is.

The first electrodes 4 in the odd-numbered columns are arranged in the positive direction, and the first electrodes 4 in the even-numbered columns of the first conductor 2 are arranged in the opposite direction.

Further, the second electrodes 6 in the odd-numbered rows of the first conductor 2 are arranged in the opposite direction, and the second electrodes 6 in the even-numbered rows of the first conductor 2 are arranged in the positive direction. There is.

That is, in FIG. 4, in either the first or second electrode, the connecting portions adjacent to each other in the column direction of the conductor are arranged so as to be close to each other or to be separated from each other.

That is, in FIG. 4, the electrodes provided in the first row (top row) and second row (middle row) of the first conductors 2, 2 are in opposite directions, in other words, the electrodes provided in the first row The connecting portion 13 of the first electrode 4 of the second row and the connecting portion 13 of the first electrode of the second row are provided so as to be separated from each other, and the connecting portion 13 of the first electrode of the second row and the connecting portion 13 of the first electrode of the third row are provided so as to be separated from each other. The connecting portions 13 of the first electrodes of the eyes (lowest row) are provided so as to be close to each other, and therefore, if we look at the second electrodes 6 that are paired with each of these first electrodes, the first The connecting portion 15 of the second electrode in the second row and the connecting portion 15 of the second electrode in the second row are provided so as to be close to each other, and the connecting portion 15 of the second electrode in the second row and the connecting portion 15 of the second electrode in the second row are provided so as to be close to each other. The connecting portions 15 of the second electrodes in the row are provided so as to be spaced apart from each other.

A pressure-sensitive variable resistance sheet 7 is stacked on the printed circuit board 1 in contact with the electrodes 4 and 6.

This pressure-sensitive variable resistance sheet is made by mixing a large number of silver particles in silicone rubber, for example, and when it is not pressed, the resistance value between both sides reaches several tens of megohms, and it is almost in the state of an insulator. However, when this is pressed, its resistance value drops from several hundred ohms to several tens of ohms, and it becomes electrically conductive, and is already well known under the trademarks Dynacon, Chomerics, etc.

A data sheet 8 in which a large amount of input data is written and a transparent protective sheet 9 covering this sheet are placed on the top surface of this sheet.

In the above configuration, when the data area written on the data sheet 8 is pressed with the stylus, the protective sheet 9 and the data sheet 8 in that area are bent, and at the same time, the pressure-sensitive variable resistance sheet 7 is compressed, thereby drastically reducing the resistance of this sheet. However, the electrodes 4 and 6 that are in contact with this sheet are electrically conductive, and in this state, the data is input.

Now, if you accidentally press between the pair of electrodes on the left side of the first row in Figure 4 and the pair of electrodes on the second row located directly below them, the first row Although the second electrode of the second row and the second electrode of the second row appear to be short-circuited by the pressure-sensitive variable resistance sheet 7, the second conductor 3 on the left side is indicated by a dotted line in FIG. Since they are arranged continuously in a straight line in the vertical direction on the other surface of the printed circuit board 1, there is no need to short-circuit them with the pressure-sensitive variable resistance sheet 7, and one continuous conductor is already formed through the through-holes 5. Therefore, the press at that point will not be input as data, nor will it be an erroneous input.

As described above, this device arranges the first electrodes 4 in odd-numbered rows of the first conductor 2 in the positive direction, and arranges the first electrodes 4 in the even-numbered rows of the first conductor 2 in the opposite direction. and the second electrode 6 in the odd-numbered row of the first conductor 2
are arranged in the opposite direction, and the second electrodes 6 in the even-numbered rows of the first conductor 2 are arranged in the positive direction.
Even when the intermediate part between a pair of electrodes 4 and 6 in a certain row and an adjacent pair of electrodes 1 and 6 in another row is pressed, it is not input as data, and therefore an error occurs as in the conventional case. It has the advantage of not being used as input.

[Brief explanation of drawings]

Figure 1 is a sectional view of a conventional input panel, Figure 2 is a plan view showing the arrangement of electrodes, Figure 3 is a sectional view of an input panel showing an embodiment of this invention, and 3-3 in Figure 4. This is a view cut along a line and viewed in the direction of the arrow, and is substantially the same as FIG. 1. FIG. 4 is a plan view showing the arrangement of electrodes. Note that the same reference numerals in the figures indicate the same or equivalent parts. 1...Printed circuit board, 2, 2...1st
conductor, 3.3...second conductor, 4,4...
...first electrode, 5.5...through hole,
6, 6... Second electrode, 7... Pressure-sensitive variable resistance sheet, 8... Data sheet, 9...
...protection sheet, 10...space sheet,
11.11...Through hole, 12.12...
Teeth, 13...Connection part, 14.14...
Teeth, 15...Connection part.

Claims (1)

[Scope of utility model registration request] A plurality of first conductors 2, 2 arranged in one direction on one surface of the printed circuit board 1, and a plurality of first conductors 2, 2 arranged intersecting with the first conductors 2, 2 on the other surface of the printed circuit board 1. A plurality of second conductors 3, 3 are respectively provided, and the first conductor 2
, 2 and the second conductor 3.3, a first electrode 4, 4 is provided on the first conductor 2, 2, and a part of the second conductor 3, 3 is provided with a through hole. On one surface of the printed circuit board 1, second electrodes 6, 6 are provided electrically insulated from the first electrodes 4, 4, and on one surface of the printed circuit board 1, second electrodes 6, 6 are provided. in which a pressure-sensitive variable resistance sheet 7, a data sheet 8, and a protection sheet 9 are placed, and each of the first electrodes 4 extends from each of the first conductors 2 in a direction intersecting with the first conductor 2. It is formed into a comb shape by a plurality of extending teeth 12.12 and a connecting portion 13 connecting these teeth, and each of the second electrodes 6 extends from each of the second conductors 3 and further extends from each of the first conductors. The electrode 4 is formed into a comb shape by the teeth 12, 12 of the electrode 4, a plurality of teeth 14, 14 arranged close to each other at regular intervals, and a connecting part 15 connecting these teeth. The first electrodes 4 in odd-numbered rows of the conductor 2 are arranged in a positive direction, and the first electrodes 4 in the even-numbered rows of the first conductor 2 are arranged in a positive direction.
The electrodes 4 of the first conductor 2 are arranged in opposite directions, and the second electrodes 6 of the odd-numbered columns of the first conductor 2 are arranged in the opposite direction, and the second electrodes 6 of the first conductor 2 of the odd-numbered columns are arranged in opposite directions. An electrode arrangement device for a data input panel in which the second electrode 6 is arranged in a positive direction.