公开(公告)号：US20170030784A1

公开(公告)日：2017-02-02

申请号：US14812958

申请日：2015-07-29

Applicant: Apple Inc.

Inventor： Anne M. Mason ,  Bryan McDonald ,  Shawn X. Arnold ,  Matthew Casebolt ,  Dennis R. Pyper

IPC: G01L1/22

CPC classification number: G01L1/22 ,  G01L1/2262 ,  G01L1/2287 ,  G01L3/1457 ,  G01L5/0047 ,  G01M5/0033 ,  G01M5/0083

Abstract: A printed circuit board may have embedded strain gauges. A strain gauge may be formed from a metal trace on a polymer substrate. The metal trace may form a variable strain gauge resistor that is incorporated into a bridge circuit for a strain gauge. The printed circuit may have a rigid printed circuit layer with a recess that receives the polymer substrate. Metal pads on the polymer substrate may be coupled to respective ends of the variable strain gauge resistor. The rigid printed circuit substrate with the recess may be laminated between additional rigid printed circuit layers. Vias may be formed through the additional rigid printed circuit layers to contact the metal pads. Embedded strain gauges may be used in gathering strain data when strain is imparted to a printed circuit during use of the printed circuit in an electronic device or during testing.

Abstract translation: 印刷电路板可以具有嵌入式应变计。 应变计可由聚合物基底上的金属迹线形成。 金属痕迹可以形成可变应变计电阻器，其被并入用于应变仪的桥式电路中。 印刷电路可以具有刚性印刷电路层，其具有容纳聚合物基底的凹部。 聚合物基板上的金属焊盘可以连接到可变应变计电阻器的相应末端。 具有凹槽的刚性印刷电路基板可以层压在附加的刚性印刷电路层之间。 可以通过附加的刚性印刷电路层形成通孔以接触金属焊盘。 当在电子设备中使用印刷电路或在测试期间使用印刷电路时，嵌入式应变计可用于收集应变数据。

公开(公告)号：US09593991B2

公开(公告)日：2017-03-14

申请号：US14812958

申请日：2015-07-29

Applicant: Apple Inc.

Inventor： Anne M. Mason ,  Bryan McDonald ,  Shawn X. Arnold ,  Matthew Casebolt ,  Dennis R. Pyper

IPC: G01L1/22 ,  G01L3/14

CPC classification number: G01L1/22 ,  G01L1/2262 ,  G01L1/2287 ,  G01L3/1457 ,  G01L5/0047 ,  G01M5/0033 ,  G01M5/0083

Abstract: A printed circuit board may have embedded strain gauges. A strain gauge may be formed from a metal trace on a polymer substrate. The metal trace may form a variable strain gauge resistor that is incorporated into a bridge circuit for a strain gauge. The printed circuit may have a rigid printed circuit layer with a recess that receives the polymer substrate. Metal pads on the polymer substrate may be coupled to respective ends of the variable strain gauge resistor. The rigid printed circuit substrate with the recess may be laminated between additional rigid printed circuit layers. Vias may be formed through the additional rigid printed circuit layers to contact the metal pads. Embedded strain gauges may be used in gathering strain data when strain is imparted to a printed circuit during use of the printed circuit in an electronic device or during testing.

Abstract translation: 印刷电路板可以具有嵌入式应变计。 应变计可由聚合物基底上的金属迹线形成。 金属痕迹可以形成可变应变计电阻器，其被并入用于应变仪的桥式电路中。 印刷电路可以具有刚性印刷电路层，其具有容纳聚合物基底的凹部。 聚合物基板上的金属焊盘可以连接到可变应变计电阻器的相应末端。 具有凹槽的刚性印刷电路基板可以层压在附加的刚性印刷电路层之间。 可以通过附加的刚性印刷电路层形成通孔以接触金属焊盘。 当在电子设备中使用印刷电路或在测试期间使用印刷电路时，嵌入式应变计可用于收集应变数据。