JPH033027A - Input device - Google Patents

Abstract

PURPOSE:To prevent an electrode from being cracked or transferred due to a shock generated at the time of input by providing an elastic layer under the electrode of at least one of upper and lower bases. CONSTITUTION:Input electrodes 3, 4 are formed on respective surfaces of the flexible plastic base 1 and the glass or plastic base 5 and both bases 1, 5 are oppositely arranged through plural spacers 6 so that these electrodes 3, 4 are arranged on respective insides. Then the elastic layer 2 is provided on at least one of the bases. A potential inclination is applied to the electrode 3 of the base 1, the potential of a position brought into contact by an input is extracted from the electrode 4 of the base 5 and the potential of the other base is extracted by switching an analog switch to detect an input position by these potential values. Consequently, the shock due to a finger or a pen for an input is not directly applied to the electrodes and the electrodes can be prevented from being transferred or cracked.

Description

[Detailed description of the invention] [Industrial application field 1 The present invention relates to human power devices.

[Prior Art] A conventional human-powered device of this kind using two boards is as shown in FIG. The substrates 1 and 5 of this input device were either made of a single material, or had a bart coating on their surface or an undercoat under the electrodes for the purpose of improving the adhesion of the electrodes. .

[Problem to be solved by the invention]

As mentioned above, in the case of conventional input devices, the substrate was made of a single material or only had a thin film coating on its surface. When inputting, the impact of a pen or finger is applied directly to the electrodes, causing cracks in the electrodes, or transferring the electrodes on one board to the other, significantly impairing the performance of the input device. There was a problem.

The present invention is intended to solve these problems, and its purpose is to provide an input device that prevents cracking of the electrodes and transfer of the electrodes due to impact during input.

[Means for Solving the Problems] An input device of the present invention is an input device in which input electrodes are formed on the surface of each substrate, and the substrates are placed opposite each other with the electrodes inside and a plurality of spacers interposed therebetween. It is characterized by having a small number of substrates (one substrate is provided with an elastic layer).

[Embodiment 1] FIG. 1 is a main cross-sectional view of a key manpower unit in this embodiment, and FIG. 3 is an example of the device configuration of embodiment 1.

1 is a flexible plastic substrate, 2 is an elastic layer made of an elastic resin layer, 3 and 4 are electrodes formed on each substrate, 5 is a glass or plastic substrate, and 6 is a diameter arranged by a spray method. Urethane resin was used as the spacer made of an insulating plastic ball of about 20 microns, and as the resin layer 2.

The method of operation of this device is to apply a potential gradient to the electrode 3 on the substrate 1, take out the potential at the contact position from the electrode 4 on the substrate 5 by input, and then apply it to the other substrate by turning on the analog switch. This involves extracting potentials and detecting the input position using those potentials.

The input device manufactured with the above configuration was subjected to a t-learning test in which a writing bevel 8 with a tip curvature radius of 0135R was continuously reciprocated on the same straight line while applying a load of 500 g from the top surface of the board l as shown in Fig. 3. When we carried out this process, we found that in the conventional input device formed from a substrate made of a single material, cracks appeared in the electrode 3 on the substrate L or transferred to the electrode 4 after several hundred operations. While the uniformity of the potential gradient was disrupted and the manual positioning accuracy was significantly reduced, the input device of Example 1 did not cause cracks in the electrode 3 on the substrate l or cracks in the electrode 4 even after 10,000 or more operations. No transfer occurred, the potential gradient remained uniform, and there was no change in the input positional accuracy.

[Example 2J] An input device having the same structure as in Example 1 was constructed using silicone resin as one elastic resin layer, and the same performance as in Example 1 was obtained.

[Example 31] In the same structure as in Example 1, an input device was constructed using epoxy resin as the elastic resin layer, and the same performance as in Example 1 was obtained.

[Example 4] In Example 1, the elastic resin layer was sandwiched between the substrates l as shown in Fig. 1 to form the substrate, but as shown in Fig. 2, the elastic layer was sandwiched between the electrode 3 and the substrate l. 2, and the elastic layer 2 was formed of urethane resin, the same effect as in Example 1 was obtained.

[Example 51] When an input device was constructed using a silicone resin as the elastic resin layer in the same structure as in Example 4, the same performance as in Example 1 was obtained.

[Example 6] In the same structure as in Example 4, an input device was constructed using epoxy resin as the elastic resin layer, and the same performance as in Example 1 was obtained.

Effects of the Invention 1 As described above, according to the present invention, by providing an elastic layer under the electrodes of the substrate, the impact of fingers or pens during input is not directly applied to the electrodes, thereby preventing transfer and cracking of the electrodes. This has the effect of making it possible to provide an input device with high writing resistance.

[Brief explanation of drawings]

FIG. 1 is a diagram showing an embodiment of the input device of the present invention. FIG. 2 is a diagram showing another embodiment of the present invention. FIG. 3 is a schematic diagram of the sliding test. FIG. 4 is a sectional view of a main part of a conventional input device. ·substrate ・Elastic layer ·electrode ·electrode ·substrate ·spacer ・Weight ・Writing pen No. figure Second figure Fourth garden

Claims (1)

[Claims] In an input device in which an input electrode is formed on the surface of each substrate, and the substrates are placed facing each other with the electrodes inside and a plurality of spacers interposed therebetween, an elastic layer is provided under the electrode of at least one of the substrates. An input device characterized by: