JPH033026A - Input device - Google Patents

Abstract

PURPOSE:To improve the adhesive force of conducting agents to electrodes by providing a slit on the electrode formed at least one of upper and lower bases. CONSTITUTION:Input electrodes 3, 4 are formed on respective surfaces of the base 1 using a biaxial oriented polyethylene terephthalate (PET) and the base 2 using glass and both the bases 1, 2 are oppositely arranged through plural spacers 5 so that these electrodes 3, 4 are arranged on the insides. The slit 7 is provided on the electrode of at least one of the upper and lower bases 1, 2 on an upper/lower connecting part 6 to electrically connect between both upper and lower bases 1, 2. Both upper and lower connecting part electrodes 3, 4 of the upper and lower bases 1, 2 may be slitted. Consequently, the adhesive force of the conducting agents to the bases can be improved.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to an input device.

[Prior art J] The conductive part of an input device that uses two boards of this type and has an external connection terminal from one of them is as shown in Figure 2 (a) and (b), as shown in Figure 2 (a) and (b). A conductive agent containing conductive particles 6
By gluing them together, an electrical connection was made and conduction was established from one side to the other. [Problems to be Solved by the Invention] However, in the case of the above-mentioned conventional human-powered devices, the transparent electrode is made of an inorganic material such as ITO (India Tin Oxide), and the conductive agent is mainly made of an organic adhesive. However, there is a limit to the adhesive strength that bonds the electrodes together. In particular, the conductive parts of input devices that are composed of substrates made of different materials, such as film on one board and glass on the other, are subjected to force due to external factors such as heat, making it impossible to maintain the adhesive force between the electrodes and causing the conductive agent to peel off. The problem was that it would get lost. The present invention is intended to solve these problems, and its purpose is to provide an input device in which the adhesion of a conductive agent to the electrodes for adhering and conducting the electrodes to each other is improved. [Means for Solving the Problems] The input device of the present invention is an input device in which input electrodes are formed on the surfaces of upper and lower substrates, and the substrates are placed facing each other with the electrodes inside and a plurality of spacers interposed therebetween. The device is characterized in that a slit is provided in at least one electrode of the upper and lower substrates of the upper and lower conductive portions for establishing electrical continuity between the upper and lower substrates. [Embodiment] FIGS. 1(a) and 1(b) are a sectional view and a front view of a conductive portion in an embodiment of an input device of the present invention. l is biaxially oriented PET (polyethylene terephthalate)
2 is a substrate using glass, 3.4 is a transparent electrode formed on each substrate, 5 is a sealing material that adheres and holds both substrates, 6 is a conductive material, and this conductive agent is An epoxy adhesive containing silver filler and conductive particles (for example, copper spheres) of a predetermined size was used. Further, 7 is a slit inserted into the electrode section. In addition to this embodiment, slits may be provided in the upper and lower conductive portion electrodes of both the upper and lower substrates. An input device having a conductive part configured as described above and a conventional second
Input devices with conductive parts as shown in Figures (a) and (b) were simultaneously created and subjected to an environmental test at 60°C and 90% to compare peeling of the conductive parts and electrical resistance values. As a result, in the 500-hour environmental test, the product of this example did not cause peeling of the conductive part and the electrical resistance was within 1.2 times the electrical resistance value, whereas the conventional product did not have any peeling. Approximately 1/3 of the conductive part has peeled off and the electrical resistance value is 1.1 to 1.8.
There was a lot of variation.

【Effect of the invention】

As described above, the present invention has the effect of improving the adhesion between the conductive agent and the substrate and preventing peeling of the conductive part by providing a slit in the electrode of the conductive part for electrical connection. .

[Brief explanation of the drawing]

FIGS. 1(a) and 1(b) are diagrams showing an embodiment of the input device of the present invention. FIGS. 2(a) and 2(b) are diagrams showing a conventional input device.・Substrate, Substrate, Transparent electrode, Transparent electrode, Sealing material, Conductive agent, Slit Figure 1 (α) Applicant Seiko Epson Corporation Representative Patent attorney Kizobe Suzuki (and 1 other person) Figure 1 (α) )

Claims (1)

[Claims] In an input device in which input electrodes are formed on the surfaces of each of the upper and lower substrates, and the substrates are placed facing each other with the electrodes inside and a plurality of spacers interposed therebetween, for establishing electrical continuity between the upper and lower substrates. An input device characterized in that a slit is provided in at least one electrode of the upper and lower substrates of the upper and lower conductive portions.