JPS6014316A - Coordinate input device - Google Patents

Abstract

PURPOSE:To obtain a coordinate input device having high durability by securing a proper space between an even resistance film and two counter sensor plates containing electrodes on their two sides and at the same time adhering both sensor plates to each other. CONSTITUTION:An insulated adhesive 14 is coated with screen printing on a resistance film 11 of the 2nd sensor plate 8 with fixed spaces. Thus the adhesive 14 is distributed in dots. The 1st sensor plate 1 put on the adhesive 14, and the adhesive 14 is hardened by a prescribed process. Space (t) is secured between both sensor plates 1, 8. In this case, a space (t) is secured between both sensor plates. A soft adhesive is used in place of a hard adhesive to secure a much longer lifetime of an input device. The higher durability is obtained with such two sensor plates adhered to each other than a case where a spacer is used.

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Application Field 2: The present invention relates to a human-powered coordinate system for 1000 fortune-telling characters.

The configuration of the conventional example and its problems The coordinate input device detects the coordinate position of a pen in order to input handwritten characters. The detected character information is sent to a combination coater or the like and displayed on a display device such as a CRT.

In order to know the position of the pen for inputting 1,000,000,000,000,000,000,000,00,00,00,00,00,00,00,000,000,000,000,000,000,000,000,000,000,000,000,000,0000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,00000000000000000000000000000000000000,000000000000000000000, 1000,0000,00000000 ,
By superimposing these, we create an inductive or capacitive coupling between the sensing plate and the pen, allowing the pen to receive the positional signal from the sensing plate, and conversely, allowing the sensing plate to receive signals from the pen. :There is a method to know Riven's position coordinates.

There is also a system that uses a resistor plate whose resistance values are uniformly distributed between 1 and 1 with other conventionally known coordinate input devices. A conventional method using this resistor plate will be explained below with reference to the drawings.

FIG.
− It is a block diagram of the equipment. 1 is the first detection plate, where Ben 2 inspects the resistive film whose resistance value is uniformly distributed on the bottom surface of the flexible insulating plate so that the point manually deformed downward, and then A second detection plate 8 is opposed below the first detection plate 1, which has an electric current (3°4) on two sides facing the force 1.This detection plate 8 is made of an insulating plate. A resistive film having a uniformly distributed resistance 1h is attached, and electrodes 5 and 6 are provided on two opposite sides at different positions from the first sensing plate 1. It has an insulating spacer and insulators 7 attached at predetermined intervals on the resistive film at 1-.When there is no input from Ben 2, the first detection plate 1 and the second detection plate 8
is electrically conductive because of the insulator 7, but if you input an input from the pen 2 to any point on the first detection plate 1 with a pressure of -1- above the predetermined value, the first Since the detection plate 1 has flexibility, it is electrically connected to the second detection plate 8 at the input point. At this time, for example, if a constant voltage is applied between the electrodes 1i'j73 and 4, a divided voltage opposite to the position of the ben 2 in the X-axis direction will be derived at the electrode 5, and conversely
If a constant voltage is applied between them, a divided voltage of 7n corresponding to the position 'Fr of the ben 2 in the X-axis direction will be outputted to the electrode 3, so that the coordinates of the input position of the ben 20 can be known. This series of operations in which a constant voltage is applied between the electrodes, a divided voltage is derived from the other voltage, and these three operations are alternately switched in the X-axis direction and the Y-axis direction are 11 by the 1'1' detection circuit 9. The position detection circuit 9 performs analog-to-digital conversion on the input divided voltage and outputs it to the performance device as position information. The arithmetic device can determine the coordinates of the input position of the Ben 20 by performing simple multiplication, and can also display characters input by the Ben 2 on a display device such as a CRT.

FIG. 2 is a front view of the conventional coordinate system shown in FIG. As mentioned above, 1st. The second detection plates 1 and 8 are made by attaching resistive films 11 and 12 having uniform resistance values to one side of insulating plates 10 and 13. Insulators are placed.

Figure 3 shows the input to Ben 2 in Figure 2.
, the first detection plate 1 and the second detection plate 8 are in contact with each other while being pressed by the ben 2. At this time, the resistive film 12 of the first sensing plate 1 on the side that is in contact with the head of the insulator 7 is slightly rubbed, and the resistive film 12 may be cracked due to repeated use. The resistance value becomes inconsistent. Therefore, unlike the input section, there is a drawback that an error occurs in detecting the / section.

OBJECTS OF THE INVENTION It is an object of the present invention to solve these conventional problems and provide a durable coordinate input device.

Structure of the Invention The coordinate input device of the present invention includes two opposing detection plates having a uniform resistive film and electrodes on two sides thereof, a gap between the two detection plates, and bonding of the detection plates to each other. Consists of adhesive.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to FIG. 4. Most of the configuration is the same as shown in FIGS. 1 to 3.

1) Adhesive material and bonding method An insulating adhesive 14 made of the material shown in Table 1 was applied at predetermined intervals to the second half of the resistive film 11 of the second sensing plate 8 by screen printing. The Zunawaji adhesive 14 is arranged in the form of dots. The first detection plate 1 was placed on this plate, and the plate was cured and bonded by a predetermined method. A gap t is maintained between both detection plates 1 and 8. The detection plate used was one in which an ITO film was formed on a polyester film.

Table 1 *1 + NCt Glue the first detection plate and the second detection plate for durability comparison [~/ In this case, after curing the second detection plate, The case where there was no adhesion was considered as nothing.

*2 Indicates the hardness of the adhesive after curing. Hard d is when there is almost no bending, soft l- is when there is even a slight bend.

2) Durability test Draw the coordinate input device as shown in Figure 4, and set the pen 2 to 150
．． Using the power of @, I repeatedly input a straight line of 10 am to the same location. This input line was monitored on a CRT, and the life was determined when distortion occurred.

Note that a glass plate was used as the underlay.

5) Results of the illi1 durability test Table 2 shows the results of the illi1 durability test. The test was conducted twice.

Margin below Table 2 *Monitored on CRT with 110 times as the median.

*2 Monitored with cR'r for 100 times as 1t11th position.

As mentioned above, the force using soft adhesive will significantly extend the lifespan compared to bar 1-'.
It can be seen that the durability is improved when the second detection plate 8 and the second detection plate 8 are bonded together.

9. In the single-length embodiment, silicone rubber thread adhesive and rubber-like Evogishi resin were used as adhesives, but the resistor 12 of the first sensing plate 1 and the head of the adhesive 14, which are generated when inputting with a pen, By gluing the first detection plate 1 and the second detection plate 8 together, the friction of It seems that the durability will be improved.

It should be noted that hard adhesives are considered to have poor durability because the adhesive part is likely to come off due to the pulling force during input. For soft adhesives, the force is 1″, 1
It is thought to have excellent durability because it is covered by the deformation of the body.

As can be seen from the effects of the invention, the coordinate input device of the present invention is made by bonding two detection plates with adhesive, and has better durability than the conventional coordinate input device using Nubeza. can get. Furthermore, by using soft Gekimi 1 as the adhesive, it is extremely practical.

[Brief explanation of the drawing]

1Q Figure 1 is an exploded perspective view showing the configuration of a conventional coordinate manpower device.
Figure 2 is a front view of the coordinate input table H'1 showing an embodiment of the present invention. be. 1...First detection plate, 2...Pen, 8.
...Second detection plate, 11...Resistive film of second detection plate, 12...Resistive film of first detection plate, 14...
...adhesive, t...gap. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
Figure 7 Figure 3 4 N ff 10

Claims (3)

[Claims] (1) A resistive film distributed uniformly is attached to the lower surface of a flexible insulating plate, and a first sensing plate having electrodes on two opposing sides is placed opposite to the lower surface of the first sensing plate. And f? <f A uniformly distributed resistive film is attached to the upper surface of the insulating plate, and a detection plate of @2 having a voltage (v) is placed on two opposing sides in a 1t-shaped insulating adhesive. 1) A coordinate input device in which a gap is maintained between the first detection plate and the second detection plate by the adhesive described in II. (2) Claim 1 in which the adhesive is made of a soft adhesive
Coordinate input device described in section. (3) The coordinate input device according to claim 1, wherein the adhesive is made of silicone rubber or rubber-like epoxy resin.