Membrane switch and manufacturing method thereof

Abstract

The invention provides a membrane switch and a manufacturing method thereof, relating to the field of electronic switches. The membrane switch comprises an upper membrane, an upper conducting layer, a lower basic layer, a lower conducting layer, an isolating layer and a glue layer, wherein the upper conducting layer is printed on the upper membrane; the lower conducting layer is printed on the lower basic layer; the isolating layer is placed between the upper conducting layer and the lower conducting layer and is a UV (Ultraviolet) gasket layer; cushion rings of the UV gasket layer are distributed on the peripheries of key locations of the upper conducting layer and the lower conducting layer; and the upper conducting layer and the lower conducting layer are adhered into an integer through the glue layer on the periphery of a UV gasket layer and the periphery of the membrane switch. In the membrane switch and the manufacturing method thereof, provided by the invention, the UV oil printing cushion rings are adopted to play isolation roles and replace the traditional interlayer, thereby the advantages of thinner and simpler structure, higher production efficiency and longer service life are achieved; and the screen printing glue is adopted to replace the traditional double-faced adhesive tape for adhesion, thereby the advantages of better operation convenience, high production efficiency and lower cost are achieved.

Description

technical field [0001] The invention relates to the field of electronic switches, in particular to a membrane switch used for computer keyboards, communication equipment keyboards, home appliances, etc., and provides a membrane switch and a manufacturing method thereof. Background technique [0002] With the advancement of membrane switch technology, membrane switches tend to develop in the direction of light and thin design, flexibility and low cost, and because of their small size, light weight, and simple operation, they have been widely used in intelligent electronic instruments, medical instruments, CNC machine tools, communication equipment, office supplies, home appliances, computer keyboards and other products. [0003] The structure of the current membrane switch is mainly composed of a three-layer structure: an upper layer circuit, a middle cushion layer and a lower layer circuit. These three layers are independent parts, which combine to form a membrane switch. T...

AI Technical Summary

Problems solved by technology

Although the membrane switch with this method and structure has enhanced waterproof sealing, the manufacturing process is complicated, the cost is high, the requirements for the production process are high, and wrinkling and deformation are easy to occur.

[0005] In addition, the membrane switch with this structure, after a certain number of times of pressing, will easily form a depression at the key position of the upper film and the upper conductive layer due to the stress, which will inevitably shorten the stroke of the key and affect the feel, and may even cause the upper film and the upper conductive layer to become depressed. The conductive layer cannot be reset in time, thereby reducing the sensitivity of the membrane switch, resulting in the failure of the membrane switch and short life

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