JPH03130818A - Coordinate input panel - Google Patents

Abstract

PURPOSE:To uniformalize an insulated state between an elastic conduction sheet and each electrode and to reduce the variance of sensitivity by providing a mesh type resin insulator between the conduction sheet and the X/Y side sheets respectively. CONSTITUTION:The resin insulators 6 having the lattice (mesh) type patterns are printed in insulated ink are provided between an elastic conduction sheet 5 and an X side sheet 2 and a Y side sheet 4 respectively instead of the insulat ed layers where the mesh patterns are printed in the insulated ink. The insulators 6 have an even thread diameter and a constant pitch interval. Thus the insulated state between the sheets 5 and both X and Y electrodes is uniformalized for improvement of the sensitivity characteristic. Furthermore both the resolution and the durability are improved owing to the thin and strong thread diameters of insulators 6.

Description

[Detailed description of the invention] [Table of contents] Overview Industrial field of application Prior art (Figure 5) Means for solving the problem to be solved by the invention (Figure 1) Working example (a) 1 Description of Examples (Figures 2 to 4) (b)
Description of other embodiments Effects of the invention [Summary] This invention aims to improve both durability and resolution of a coordinate input board for inputting coordinates into a computer, etc., and to detect the X-side position of a human power point. In a coordinate input board having an X-side sheet, a Y-side sheet for detecting the Y-side position of an input point, and an elastic conductive sheet provided between the X-side sheet and the Y-side sheet, the X-side A resin insulator in a grid pattern was provided between the sheet and the elastic conductive sheet and between the Y-side sheet and the elastic conductive sheet.

[Industrial application field]

The present invention relates to a coordinate input board for manually inputting coordinates to a computer or the like.

Coordinate input boards are widely used for inputting coordinates to computers and the like.

As such a coordinate input board, a pressure-sensitive type is known that detects the coordinates of the position of pen pressure on the board.

With this pressure-sensitive type, durability is a problem because pressure is applied to the plate with a pen, and a highly durable one is desired.

[Conventional technology]

FIG. 5 is an explanatory diagram of the prior art.

The conventional pressure-sensitive coordinate input board shown in FIG.
A pressure sensitive conductive rubber 3 is provided on a Y electrode sheet 4 having a plurality of electrodes, and an X electrode sheet 2 having a plurality of X electrodes and a protective layer 1 are laminated on the pressure sensitive conductive rubber 3.

This pressure-sensitive conductive rubber 3 is made of elastic rubber mixed with metal powder such as nickel to give it conductivity.The pressure-sensitive conductive rubber 3 is compressed by pen pressure applied from above the protective layer 1, and the mixed metal is released. By conducting, the X electrode and the Yt electrode at the point where the pressure was placed are electrically connected, and the coordinates are detected.

Such pressure-sensitive conductive rubber 3 is expensive, its sensitivity varies due to variations in the amount of powdered metal mixed in, and furthermore, when the metal is pressed, it crumbles, resulting in deterioration of sensitivity and poor durability, making it impractical. It wasn't.

Therefore, as shown in FIG. 5(B), the pressure-sensitive conductive rubber 3
It has been proposed to use an elastic conductive sheet 5 instead.

Since the conductive sheet 5 is a conductor, it is necessary to prevent it from coming into contact with the X electrode of the X electrode sheet 2 and the Y electrode of the Y electrode sheet when the plate is not pressed with a pen.

For this reason, conventionally, the insulation 150 was formed by printing insulating ink on both sides of the conductive sheet 5 in a mesh pattern of 411M100 microns and a pitch of 800 microns.

[Problem to be solved by the invention]

Incidentally, in the insulating layer 50 having such a mensch pattern, the thinner the lines of the pattern, the higher the resolution.

However, in the conventional technology, in order to increase the resolution,
When printing with thin lines, there arises a problem that tJftg tends to occur, resulting in poor durability, and when printing with thick lines to improve durability, there arises a problem of poor resolution.

Therefore, an object of the present invention is to provide a coordinate input board that can improve both durability and resolution.

[Means to solve the problem]

FIG. 1 is a diagram showing the principle of the present invention.

An X-side sheet 2 for detecting the X-side position of the input point, a Y-side sheet 4 for detecting the Y-cut position of the input point, and the
In a coordinate input board having an elastic conductive sheet 5 provided between a side sheet 2 and a Y-side sheet 4, a A resin insulator 6 in a grid pattern is provided between the conductive sheet 5 and the conductive sheet 5.

[Effect]

The present invention uses a grid-like (
A resin insulator 6 with a mesh-like pattern is provided.

Since the resin insulator 6 has a uniform thread diameter and a constant pitch interval, the insulation state between the conductive sheet 5 and the X, Y electrodes is made uniform, and sensitivity characteristics are improved.

Furthermore, the resin insulator 6 has a small thread diameter (approximately 0.1 m1) and is strong, so resolution and durability can be improved.

Furthermore, even if such an insulator 6 is used, the resin sinks into the conductive sheet 5, so that the board can be drawn smoothly with a pen.

[Embodiments] (a) Description of an Embodiment FIG. 2 is an exploded configuration diagram of an embodiment of the present invention, FIG. 3 is a configuration diagram of its resin insulator, and FIG. 4 is an exploded sectional view thereof.

In the figure, the same parts as shown in Figures 1 and 5 are:
Indicated by the same symbol.

Adhesive layers IO are provided on the lower surface of the protective layer 1 at its four corners for adhesion, as shown in FIGS. 2 and 4.

The X electrode sheet 2 has n number of X electrodes on the bottom surface of the substrate sheet.
X electrodes X1 to Xn are arranged in parallel, and a resistance layer 20 is provided that electrically connects the ends of the X electrodes X1 to Xn.

Yt electrode sheet has 0 Y electrodes Y on the top surface of the substrate sheet.
l-wYn are arranged in parallel, and a resistance layer 40 is provided that electrically connects the ends of the Y electrodes Y1 to Yn.

As shown in FIG. 4, the elastic conductive sheet 5 is provided with a spacer 51 around it, and an adhesive layer 5 is provided on both sides of the spacer 51.
1a is provided.

As shown in FIG. 3, the resin sheet 6 is made of polyester mesh having a thread diameter and an opening (hole), and the input sensitivity can be changed by changing the thread diameter and opening.

That is, it is a sheet made of a polyester resin insulator in a lattice shape, and has, for example, a thread diameter of about 0111111 mm and an opening (hole) of about 1 mm.

In the coordinate input board configured in this way, resin sheets 6 are stacked on both sides of the conductive sheet 5, and the adhesive layer 51 of the spacer 51 is stacked on both sides of the conductive sheet 5.
At step a, the resin sheet 6 is bonded to the end of the conductive sheet 5.

Furthermore, the X electrode sheet 2 and the Y electrode sheet 4 are separated from both sides.
When these are superimposed, the X electrode sheet 2 and the Y electrode sheet 4 are also bonded together via the opening of the resin sheet 6 with the adhesive layer 51a.

In this way, just by providing the spacer 51, the X electrode sheet 2,
The resin sheet 6, the conductive sheet 5, the resin sheet 6, and the Y electrode sheet 4 are bonded at their ends to be integrated.

Therefore, it is inexpensive and easy to manufacture.

Furthermore, a protective layer 1 for protecting the X electrodes from the pressure of a writing instrument or the like is placed on the X electrode sheet 2 and adhered to the X electrode sheet 2 using an adhesive layer 1O, thereby completing the coordinate input board.

In the coordinate input board constructed in this manner, a resin sheet 6 is interposed between the X and Y electrode sheets 2.4 and the conductive sheet 5.

This resin sheet 6 is made of insulating resin formed into a lattice shape (mesoche shape), and since the thread diameter can be made uniform, the distance between the conductive sheet and the electrode can be made uniform, and the insulation state between the conductive sheet and the electrode can be maintained. Uniformity is achieved, eliminating variations in sensitivity characteristics.

Furthermore, even if the thread diameter is made thinner, it is strong, so resolution and durability are improved.

Furthermore, since the threads of the resin sheet sink into the conductive sheet by pressure, it is possible to smoothly move a writing instrument or the like on the board.

(bl) Description of other embodiments In the embodiments described above, the resin sheet is made of polyester, but it may be made of other resins.

Further, as the X and Y side sheets, although an electrode sheet having a group of parallel electrodes has been described, it is also possible to use a sheet resistor formed between opposing electrodes as disclosed in Japanese Patent Application Laid-Open No. 63-20522. .

Although the present invention has been described above using examples, the present invention can be modified in various ways according to the gist of the present invention, and these are not excluded from the present invention.

〔Effect of the invention〕

As explained above, according to the present invention: (1) Since the mesh-like resin insulator is provided between the elastic conductive sheet and the X and Y side sheets, the insulation state between the conductive sheet and each electrode can be made uniform. , it has the effect of reducing the variation in sensitivity, ■ Also, it is durable even if the thread diameter is small,
This has the effect of providing a coordinate input board with high resolution and good durability.

[Brief explanation of the drawing]

Fig. 1 is a diagram of the principle of the present invention, Fig. 2 is an exploded configuration diagram of an embodiment of the invention, Fig. 3 is the constituent countries of the resin insulator shown in Fig. 2, and Fig. 4 is an embodiment of the invention. The exploded sectional view, FIG. 5, is an explanatory diagram of the prior art. In the figure, 2-X side (electrode) sheet, 4-Y side (electrode) sheet, 5-conductive sheet, 6-resin insulator.

Claims (1)

[Claims] An X-side sheet (2) for detecting the X-side position of an input point, a Y-side sheet (4) for detecting the Y-side position of the input point, and the X-side sheet (2). ) and an elastic conductive sheet (5) provided between the X-side sheet (2) and the Y-side sheet (4). A coordinate input board characterized in that a resin insulator (6) in a grid pattern is provided between a side sheet (4) and the elastic conductive sheet (5).