Copper alloy, flexible circuit board employing copper alloy, and miniature sounder
A flexible circuit board, copper alloy technology, applied in the direction of sensors, loudspeakers, electrical components, etc., can solve the problems of large local resistance, fatigue damage, heat generation, etc., and achieve the effect of enhanced tensile strength
Inactive Publication Date: 2016-11-09
AAC TECH PTE LTD
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Problems solved by technology
[0006] The purpose of the present invention is to provide a copper alloy, a flexible circuit board using the copper alloy and a micro-speaker, which are used to solve the problem of cracks caused by fatigue damage caused by the low tensile strength of the copper foil layer of the existing flexible circuit board. Problems of short circuit, large local resistance and serious heating
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[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. . Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0020] see figure 1 and figure 2 ,in, figure 1 It is a three-dimensional exploded schematic diagram of a preferred embodiment of the miniature sound generator provided by the present invention, figure 2 for figure 1 An exploded perspective view of the flexible circuit board of the microsounder shown. The miniature sounder 1 includes a frame 11 with a receiving space, a magnetic circuit system 13 stacked in the frame 11 , a vibration system...
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The invention provides copper alloy. The copper alloy comprises 0.05 to 10 percent of a microelement (microelements) in percentage by mass, wherein the microelement is silver, tin, zirconium, silicon, or cobalt, or a composition of the microelements comprises two or more of the microelements; and the residuals comprise copper and unavoidable impurities. The invention further provides a flexible circuit board made of the copper alloy and a miniature sounder employing the flexible circuit board. Compared with the relevant art, the miniature sounder provided by the invention has the advantage that the miniature sounder solves the problem that due to a low tensile strength of the conventional copper foil layer, cracks are caused by fatigue damage, which leads to short circuits, partially overlarge resistances and serious heat.
Description
【Technical field】 [0001] The invention relates to the technical field of electroacoustic conversion, in particular to a copper alloy, a flexible circuit board using the copper alloy and a miniature sounder. 【Background technique】 [0002] With the advent of the mobile Internet era, the number of smart mobile terminals continues to rise. At present, the functions of the smart mobile terminal are extremely diverse, one of which is the high-quality music function, and the built-in miniature sounder of the smart mobile terminal is one of the necessary conditions for realizing this high-quality music function. [0003] The miniature sound generator of the related art usually includes a basin frame, a vibration system and a magnetic circuit system accommodated in the basin frame, and a flexible circuit board connected with the vibration system, and the magnetic circuit system includes a main magnet and a main magnet Auxiliary magnetic steel forming a magnetic gap, the vibration s...
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IPC IPC(8): H04R9/06H04R9/02
CPCH04R9/06H04R9/02H04R2400/11
Inventor 卢志高司秀江
Owner AAC TECH PTE LTD