JPS61188824A - Tablet input board - 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 relates to a tablet input board used as a terminal device when inputting characters, figures, etc. to a processing device such as a computer.

2. Description of the Related Art In recent years, tablet input boards have been increasingly used to input characters, figures, etc. as coordinate data into processing devices such as computers.

Possible ways to use the tablet input board are as follows.

a9 Input original images such as letters and figures by hand.

b. Input by tracing a figure written on a book or the like.

C1: A menu sheet with layout keys, control commands, etc. printed in advance is placed and the corresponding items are input by pointing with an input pen.

(1. Place it in front of a CRT, LCD, or other display for interactive input.

Of these, in the case of d, the input surface of the tablet input board must of course be translucent.
In the case of B, it is possible to set up a dinuplay directly below the input board to display the input trajectory, and in the case of C, it is also possible to use it by exchanging different types of menu sheets under the input board, so that the input board is transparent. It is preferable to have optical properties.

Various methods have been announced and implemented to obtain coordinate data on the input board for a tablet input board. The magnetic field obtained when a current is supplied from the outside to this conductor is detected using a detector having some kind of magnetic field detection means, and the distance from the plurality of conductors to the detector is determined based on the strength of the detected magnetic field, and the distance is determined as a coordinate value. There is a tablet input device that can be read. Further, a plurality of conductors are disposed under the surface of the input board so as to be perpendicular to the X-axis direction and the Y-axis direction, and a magnetic field generating means such as an excitation coil is brought close to the input board to separate the conductors from the plurality of conductors. There is a tablet input device that allows you to know the distance to the magnetic field generating means and read it as coordinate values.

These so-called electromagnetic transmissive tablet input devices can be made substantially transparent by forming a thin conductor on a transparent input board, realizing the usage pattern described above. can.

Hereinafter, an example of the input board of these tablet input devices will be described with reference to the drawings.

FIG. 4 is a perspective view of a configuration example of a conventional tablet input board, in which 1 is a conductive wire arranged in the X-axis direction, 2 is a conductive wire arranged in the Y-axis direction, and 3 is made of glass or the like. The input board is made of a transparent and insulating member, and the conductive wire 1 is located below the conductive wire 2, and is arranged so that there is no electrical continuity with each other.

Problems to be Solved by the Invention However, with the above structure, when considering an electromagnetic induction type tablet input board, it is desirable that the distance between the detection part and the detected part be as close as possible. In order to arrange the conductive wires 1 and 2 on the input board 3, these conductive wires 1 and 2 must be encapsulated at the same time when molding glass etc., which is extremely difficult in terms of construction method and also increases the cost. There was a problem.

In view of the above-mentioned problems, the present invention makes it possible to precisely and reliably form a matrix-like conductor for generating or detecting a magnetic field using a relatively simple method, and also makes it possible to have sufficient translucency. It provides a board.

Means for Solving the Problems In order to solve the above problems, the tablet input board of the present invention includes a translucent insulating plastic film;
A plurality of parallel first linear conductors are formed by a printing method using a conductive paste on one side of the insulating plastic film, and a conductive paste is printed on the other side of the insulating plastic film. a plurality of parallel second linear conductors perpendicular to the first linear conductor formed by a method, and both sides of the insulating plastic film having the first and second linear conductors; It is coated with a translucent adhesive and covered with a translucent insulating plastic film on both sides.

Effect of the Invention The present invention makes it possible to easily realize a precise tablet input board having more sufficient translucency through the above-described configuration.

Embodiment Hereinafter, a tablet input board according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of an embodiment of the present invention, in which 6 is a translucent insulating plastic film, and 4 is a conductive paste printed on the lower surface of the insulating plastic film 6 in parallel to the X-axis direction. The formed plurality of linear conductors 5 are a plurality of linear conductors formed by a printing method using a conductive paste on the upper surface of the insulating planutic film 6 in parallel to the Y-axis direction, Both linear conductors 4 and 5 are formed in a matrix shape. Reference numeral 7 denotes a translucent adhesive formed on both sides of the insulating plastic film 6 having the above-mentioned linear conductors 4 and 6.

Reference numeral 8 denotes an insulating planutic film having a translucent property, which is coated on both sides with an adhesive 7 formed on both sides of an insulating plastic film 6 having the above-mentioned linear conductors 4 and 5. 2 is a sectional view of this embodiment, and FIG. 3 is a sectional view taken along the line A' in FIG.

A method of manufacturing the tablet input board configured as described above will be described below with reference to FIGS. 1, 2, and 3.

A plurality of parallel strips are printed on one side of a translucent insulating plastic film 6 by, for example, screen printing or gravure printing using a conductive base t made of conductive fine powder dispersed in resin. A linear conductor 4 is formed. Then, on the other surface, a plurality of parallel linear conductors 5 orthogonal to the linear conductors 4 are formed in a similar manner to obtain matrix-like conductors 4 and 6. Next, a translucent adhesive 7 is formed on both sides of the insulating plastic film 6 including the linear conductors 4 and 6 by, for example, a screen printing method or an immersion dipping method. 7, the conductor 4,
5 may be coated on both sides with an insulating plastic film 8 having translucency.

In addition, as the insulating plastic film 6 having translucency, polyester, polycarbonate, polysulfone,
Suitable materials include vinyl chloride, polyethylene, fluororesin, and acrylic. Even if the thickness of the insulating plastic film 6 is about 10 μm, the insulation property is sufficient. Further, the conductive paste used to form the linear conductors 4.5 in a matrix shape includes gold paste, silver paste, copper paste, nickel paste, carbon paste, etc.
Commercially available conductive paste inks for various types of printing such as screen printing or gravure printing can be used for practical purposes. Solvent type or emulsion type adhesives such as polyurethane, polyethylene, polyester, and acrylic are suitable for the light-transmitting adhesive 7, and among them, acrylic emulsion type is most suitable. Next, as the insulating plastic film 8 having translucent properties for coating, polyester, polycarbonate, polysulfone, vinyl chloride lvl can be used.
Suitable materials include polyethylene, fluororesin, and acrylic. Furthermore, by attaching a translucent thick plate to the back of the tablet input board of this embodiment, or by installing a frame board on the outer edge, the strength and data input will be improved. effective. Note that even if the tablet input board of this embodiment is entirely or partially colored, aesthetic and functional effects can be expected depending on the intended use.

Effects of the Invention As is clear from the above explanation, the tablet input board of the present invention has a simple structure, high precision, and sufficient translucency, and is particularly useful when inputting handwritten characters and figures. It brings about the effect of

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an embodiment of the tablet input board according to the present invention, FIG. 2 is a sectional view of essential parts of the tablet input board shown in FIG. 1, and FIG. cross section,
FIG. 4 is a perspective view of a conventional tablet input board. 4.6... Linear conductor, 6... Insulating plastic film, 7... Adhesive, 8...
...Insulating plastic film. Name of agent: Patent attorney Toshio Nakao and 1 other person4,
R-shaped 4-hole (x axis) 5-・・/(Ladle-2 Fig. 1
1,,, Uba Biao's Brassica, Film 7, I4] 8, 8-pointed 8-wire glass film, Figure 2

Claims (1)

[Claims] A translucent insulating plastic film, a plurality of parallel first linear conductors formed by a printing method using a conductive paste on one side of the insulating plastic film, and the other side of the insulating plastic film. a plurality of parallel second linear conductors perpendicular to the first linear conductor formed by a printing method using a conductive paste on the surface of the first and second wires; A tablet characterized in that a translucent adhesive is formed on both surfaces of the insulating plastic film having a shaped conductor, and both surfaces are coated with a translucent insulating plastic film. input board.