JPS5946717A - Method of producing spacer in touch input device - 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 The present invention is applied to an input device used in a display device such as a computer terminal (CI), etc., and in particular when pressing the panel surface with a suppression pen etc. f to detect the position
The touch type input device is only VrO, and the method of manufacturing the 5K spacer is VcIro.

This type of input device is currently available in various formats. One of them is the device shown in FIG.

That is, FIG. 1 shows a cross section of the input chain, in which VC indium oxide (In03
), one electrode WL2 is laminated with a transparent resistance layer 2b made of tin oxide (S n 02 ), and a columnar insulating spacer 3 made of silicone resin is protruded on top of this electrode 2. On top of the spacer 3, a middle electrical phase 4 laminated on a base film 4a with a resistive layer 4b as in the previous power distribution % 2 is placed. VC is superimposed, and this is covered with a clear protective sheet 5 made of polyester film. (2) As shown in FIGS. 2(a) and 2(b)K, terminal electrodes 2C made of silver or the like are formed on both terminals 11 of one 'r1N and pole 2, and
The L-side electrode 41- is orthogonal to the terminal electrode 2C.
tz) A terminal wire wf4C is formed on both sides 11 so that claws and pressure can be applied alternately between terminal '+174m 20 and terminal electrode 40.

Therefore, as shown in FIG. 3, if the pressure pen 6 with one taper is used to press down on the value holding sheet 5, one resistive layer 2b and one resistive layer 4 will be formed by 41.
1 sea ≦ contact with b, 11 sea 1 pressure not exceeded 4
1 (Thunder layers can alternately detect lightning and pressure, and the position of pressure can be detected and shifted.

The method for manufacturing such an input device is as follows.

+S, the transparent polyester base film 2aJ: is coated with the titanium layer 2b, which is clear from the above 9, and is integrated with the fang 1.
．． A single flexible sheet-like electrode is created.

Next, a photoresist layer 2d is coated on the resistive layer 2b as shown in FIG. 11
・After the R light, the mask 7 and the unexposed photoresist layer are removed by etching KJ, and washed from July to 41st;
7. As shown in ()+), the remaining photosensitive portion is integrated onto the electrode 2 as a spacer 3. A second electrode 4 is formed on top of this spacer 3 in the same manner as the electrode 2 described above.

The resistive layer 4b is placed so as to face the resistive layer 2b of the first electrode 2, and the upper surface f of the electrode 4 is covered with a protective sheet 5 to form an input device θ as shown in FIG.

However, in the above-mentioned input device, the manufacturing process, especially the spacer manufacturing process, is complicated and costly, and it is not convenient for mass production, and it cannot be said to be strong enough.

The present invention has been made in view of the above-mentioned points, and its purpose is to provide a method for manufacturing a spacer for a touch-type input device/l that is high in productivity, low in cost, and excellent in strength. The manufacturing process for this is to drill a hole in one of the electrodes, inject an insulating material through the hole and make it protrude above the electrode surface, and then harden the insulating material to form a π spacer on the electrode surface. It is characterized by the fact that it becomes

Embodiments of the present invention will be described below based on the drawings.

FIG. 5 is a partial cross-sectional view of an input device l according to an embodiment of the present invention, in which, similarly to the conventional example shown in FIG. Film, laminated with 2a top ↑: '54Q (2
A second electrode 4 is placed on top of the other electrodes through three spacers arranged in a dot shape, and the surface is further covered with a protective sheet 5. However, the spacer 3 is a resin protrusion filled in a hole 2d drilled in the electrode 2 (therefore, it is integrated with the electrode 2).

This spacer 3 is manufactured as shown in FIG.

First, the resistance layer 2b was laminated as shown in (a).
1) Lee:! Prepare the fi2 and drill the hole 2d shown in (b) in the pole 2 of this whistle. (The holes I and 2d and the size 1 interval may be made as appropriate depending on the design of the spacer 3 to be made.

As shown in the next VC (cl VC), an injection molding machine consisting of an upper mold 8 equipped with a recess 8a for removing the protruding portion of the spacer 3, and a lower mold equipped with a nozzle 9a for resin injection. Set the electrode 2 and the nozzle 9;
The resin injected from I fills the hole 2d and the recess 8a (-1) and hardens to form the spacer 3 integrated with the electrode 2 as shown in (d).

What is the spacer 3 formed as shown in L? R', 枦2
For f, the height, shape, etc. are determined with high precision (B)
.

In the above embodiment, a polyester film was used as the base film 2a of the electrode 2, but other materials such as polyimide film may be used as long as the material can withstand the heat during injection molding. I also take this into account.

In addition, the spacer 3 was formed integrally with the lower commercial right 2vc, but -
It may be formed on the L part electrode 4, or may be formed separately on both electrodes 2 and 4, depending on the case.

The present invention is as described above, and in particular, in the 1111 manufacturing method of a spacer, a hole is formed in one electrode, an insulating material is injected through the hole to protrude from the surface of the electric hakama, and the insulating material is hardened. The feature is that a spacer is integrally formed on the electrode surface of VC, r, and electrode.

Therefore, the manufacturing process &-1 photoresist 1, (which JT
It is shorter than the conventional type, which is convenient for the government and allows for a significant cost reduction.The spacer is also integrated into the hole of the electrode, so it has excellent strength. 2) Be able to do it.

[Brief explanation of the drawing]

101 is a partial cross-sectional view of a conventional touch input device, and FIG. 2 is a plan view of electrodeposition, (a) is a lower electrode, (b
) respectively indicate the upper electrodes, 3rd [21] is a partial cross-sectional view showing the 1〒ilJ construction rule of the conventional touch type input panel, and Fig. 4 shows 1) the conventional manufacturing method of the spacer. In the explanatory diagram, (]) indicates the process of exposing using photoresist;
(b) shows the state QJi after etching. FIG. 5 is a partial cross-sectional view of touch input 4jE (i) using the spacer according to the present invention, and FIG.
Indication of the construction process, (a) il tT, i', 4; fi
2, (b) &-j hole punched 4i5,
(cl &'X, molding 1%) Setting process in the mold,
((1) is after molding? Mouth decay and spazake are Jt
show. 2...? '[1J2d...hole, 3...
...Spacer, 4 ... ... 7; Well, I just died. Figure 3 Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] In a touch type input device in which the input position plate is detected by making the two types of electrodes face each other with a spacer in between and bringing both types of electrodes into contact, a hole is bored in one of the electrodes,
Insulating material is injected through this hole and protrudes above the box;
A method for manufacturing a spacer in a touch type input device, characterized in that a spacer is integrally formed on a side surface of the insulating material f1 by curing the insulating material f1.