Keyboard membrane and keyboard
AssigneeChance Line Industrial Co., Ltd.
InventorMing-Hsien Yao
Life of this patent
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Abstract
A keyboard membrane, which is a thin sheet molded object thermoformed by a thermoplastic wear-resistant molding membrane, comprising a plurality of concave-convex parts, the concave-convex part comprises a plurality of upwardly protruding pressing parts, each of the pressing parts has a top wall and a peripheral wall extending downward from a periphery of the top wall; the keyboard membrane is disposed on a key module with keys; each of the pressing parts is connected with one of the keys of the key module; a periphery of the keyboard membrane has a peripheral edge extending outward from the pressing part, and the peripheral edge wraps the key module to form a waterproof and dustproof keyboard.
Claims19
A keyboard membrane, being a thin sheet molded object thermoformed by a thermoplastic wear-resistant molding membrane, comprising a plurality of concave-convex parts;
- the concave-convex part comprising a plurality of upwardly protruding pressing parts, each of the pressing parts having a top wall and a peripheral wall extending downward from a periphery of the top wall;
- the keyboard membrane being used for disposing on a key module;
- each of the pressing parts being used for corresponding to a key of the key module;
- a periphery of the keyboard membrane further having a peripheral edge extending outward from the pressing part, and the peripheral edge being used for wrapping the key module;
- and
- a polycarbonate polyurethane (PU) layer, being polycarbonate polyurethane;
- a thermoplastic polyurethane (PU) layer, with ductility and elasticity, disposed on one surface of the polycarbonate PU layer;
- the polycarbonate PU layer being a surface layer of the molded object, the thermoplastic PU layer being an inner layer of the molded object;
- and
- a thickness of the keyboard membrane is equal to or greater than 0.03 mm and less than 0.1 mm.
Dependencies are inferred from the claim text.