JPS62105325A - Menbrane touch panel - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is a device that is installed at a predetermined position on or around a screen of a display device, for example, and used to input coordinate data corresponding to a displayed image of the display device. The present invention relates to a membrane touch panel used.

[Prior art]

A conventional example of a membrane touch panel is shown in Figure 3 (a).
) As shown in (b), J: The substrate 2 and the lower substrate 3 are
A plurality of spacers 4 are arranged to face each other at predetermined intervals. On the opposing surface of the upper substrate 2, a plurality of electrodes 5 are formed in vertical stripes at a predetermined pitch.

On the other hand, on the surface facing the lower substrate 30, a plurality of electrodes 6 are formed in horizontal stripes at a predetermined pitch. Each of the above electrodes 5.
At one end of 6, there is a drawn cotton 7 corresponding to each electrode 5.6.
. . , are connected by connecting portions 7a, . . . , respectively. The upper substrate 2 is made of a flexible substrate, and by pressing a predetermined position of the substrate 2 with a fingertip, a pen tip, etc., the electrodes 5a and 6a facing each other on both the upper and lower substrates 2 and 3 can be connected to each other. The device is configured such that when the user contacts the user, coordinate data corresponding to the location is inputted to a display device or the like. Each of the electrodes 5 and 6 described above is formed by forming a transparent conductive film such as ITO on the opposing surfaces of the upper and lower substrates 2 and 3 by a pre-column method or a sputtering method, and then etching the film. Further, the lead wire 7 and its connecting portion 7a are formed by a method such as screen printing using a conductive paste such as carbon paste or silver paste.

However, in the membrane touch panel 1 described above, the electrodes 5..., 6...
Determine the required size, pinch, and number of electrodes, and form lead wires 7... on the substrates 2, 3 via the connecting portions 7a... corresponding to each of the electrodes 5, 6. The pattern must be masked. In this way, each time the pinch or number of input keys is different, it is necessary to form the electrodes 5 and 6, the lead wire 7, and the connecting portion 7a thereof in accordance with this. Therefore, it is necessary to manufacture a new predetermined mask pattern or printing screen each time. in this way,
The lack of versatility of the electrode-forming substrate was a factor leading to a significant increase in costs.

[Purpose of the invention]

The present invention has been made in consideration of the above-mentioned conventional problems, and uses a highly versatile electrode-forming substrate on which a plurality of electrode constituent materials are formed in a stripe shape with a predetermined pinch to form a membrane touch panel. The object of the present invention is to provide a membrane touch panel that is configured to form a membrane touch panel that simplifies the manufacturing process and further reduces costs.

[Structure of the invention]

In the membrane touch panel of the present invention, a large number of electrode constituent materials are formed in a striped manner on each opposing surface of a pair of substrates disposed opposite each other, and the ends of a set of adjacent electrode constituent materials are connected to each other. An electrode is formed by connecting the two, and is characterized in that an electrode pattern corresponding to any input key pitch can be easily formed.

[Example 1] The first example of the present invention will be described below based on FIGS. 1(a) and (b).

In a membrane touch panel, two transparent upper and lower substrates 11 and 12 are arranged facing each other at a predetermined interval, and on the opposing surfaces of each of them, a large number of thin wires 13 as an electrode constituent material or a transparent conductive film are provided. The electrode pattern formed by etching is formed in a striped shape with the contacts Nwm. One end of each set of adjacent four wires 13... or an electrode pattern formed by etching a transparent conductive film is connected by a connecting part 15 formed using conductive paste, thereby making the transparent An electrode 14 is configured.

A large number of such electrodes 14 are arranged in parallel on the substrates 11 and 12, and are arranged in stripes so that all the wires 13... or electrode patterns formed by etching the transparent conductive film are arranged at a constant pitch. It is formed. Each of the above connection parts 15
. . . are connected to respective lead lines 16 . . . for connection to a touch panel control circuit or the like. Each of the above electrodes 14..., connection portions 15..., and lead wires 16...
Both the upper and lower substrates 11 and 12 on which the electrodes 14 are formed are provided so that the electrodes 14 are arranged to face each other at a predetermined interval by a spacer (not shown), and the upper and lower substrates 11 and 12
Opposed electrodes 14 are arranged in a matrix to be three-dimensionally orthogonal, thereby forming a membrane touch panel.

Note that the wire 13 as the electrode constituent material described above or the electrode pattern formed by etching the transparent conductive film is set to have a pitch width as narrow as possible.

That is, Nfl specified as the pitch width above is used as the minimum width. However, the specific dimensions are not particularly limited and can be selected as appropriate.

In the above configuration, when producing this membrane touch panel, the substrate shown in FIG. Electrode forming substrate 2 formed on
3 is used. This substrate 23 can be used for general purpose use since it is possible to form electrodes on each membrane touch panel according to the required input key pinch, number, etc. by appropriately selecting the number of wires 22 to be connected to each other. It is something that has a nature. By using such a prefabricated general-purpose electrode forming substrate 23, a new pattern mask or printing screen for forming an electrode pattern can be individually created according to the required number of input keys, pitch, etc. There is no need to pattern the electrodes each time.

C Example 2] A second example of the present invention will be described based on FIG. 2. In this embodiment, one end of a set of six adjacent wires 13 as electrode constituent materials or a set of six electrode patterns formed by etching a transparent conductive film is connected at a connecting portion 15. This constitutes the electrodes 31.... The other configurations are the same as the first embodiment,
The same reference numerals are given to members having the same functions, and the description thereof will be omitted.

〔Effect of the invention〕

As described above, in the membrane touch panel of the present invention, a large number of electrode constituent materials are formed in a striped manner on each of the opposing surfaces of a pair of substrates disposed opposite each other, and a plurality of adjacent electrode constituent materials are formed in a striped manner. This is a configuration in which electrodes are formed by connecting the ends of the set. By adopting such a structure, depending on the number and pitch of various input keys, a group of multiple ohm wires or multiple wires of silk formed by etching a transparent conductive film can be used. By connecting the required number of electrode pattern groups, it is possible to easily obtain a membrane touch panel having a desired input pitch. This eliminates the need to recreate the electrode pattern each time to suit the number of input keys, pitch, etc., and provides versatility in the electrode forming substrate that makes up the membrane touch panel, simplifying the manufacturing process. However, Hi-4 can have the effect of promoting cost reduction.

[Brief explanation of drawings]

FIG. 1(a) is a plan view of the main parts of a membrane touch panel showing an embodiment of the present invention, as seen from the side facing the electrode-formed substrate, and FIG. FIG. 2 is a plan view of the main parts of an electrode-formed substrate as seen from the opposite surface side of the electrode-formed substrate in a membrane touch panel according to another embodiment of the present invention, and FIG. 3(a) is a perspective view showing a conventional example, and FIG. 3(b) is an explanatory view showing its usage state. 11, 12, and 21 are substrates, 13 and 22 are wires (electrode constituent materials), 14 and 31 are electrodes, 15 is a connecting portion, 16 is a lead wire, and 23 is an electrode forming substrate.

Claims (1)

[Scope of Claims] 1. A large number of electrode constituent materials are formed in a striped shape on each opposing surface of a pair of substrates provided in opposing arrangement, and the ends of one set of adjacent plurality of these electrode constituent materials are formed. A membrane touch panel is characterized in that electrodes are formed by connecting them together. 2. The membrane touch panel according to claim 1, wherein the electrode components are formed of wires, and all the electrode components are arranged at a constant pitch.