POLYESTER SWITCH OF FLEXIBLE CIRCUIT BOARD FOR KEYBOARD
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United States of America Patent
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Issued Date -
Nov 17, 2016
app pub date -
Jan 19, 2016
filing date -
Nov 20, 2014
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Abstract
A polyester thin-film switch of a flexible circuit board for a keyboard includes an upper layer polyester thin film, a middle layer and a lower layer polyester thin film, wherein the upper layer polyester thin film and the lower layer polyester thin film are plated with a matching printed circuit formed by copper wires with the width of 0.1 mm to 0.2 mm, the middle layer is an insulating layer, and the insulating layer is opened with a spacer hole for a key to pass through.
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