US 12,085,459 B2
Pressure detection module and electronic device
Ruilang Huang, Shenzhen (CN); Peng Xiao, Shenzhen (CN); Jun Cai, Shenzhen (CN); and Xinglang Xu, Shenzhen (CN)
Assigned to SHENZHEN GOODIX TECHNOLOGY CO., LTD., Shenzhen (CN)
Filed by SHENZHEN GOODIX TECHNOLOGY CO., LTD., Shenzhen (CN)
Filed on Sep. 21, 2021, as Appl. No. 17/481,041.
Application 17/481,041 is a continuation of application No. PCT/CN2021/094710, filed on May 19, 2021.
Claims priority of application No. PCT/CN2021/076377 (WO), filed on Feb. 9, 2021.
Prior Publication US 2022/0252469 A1, Aug. 11, 2022
Int. Cl. G01L 1/14 (2006.01); G01D 5/24 (2006.01)
CPC G01L 1/144 (2013.01) [G01D 5/24 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A pressure detection module, wherein the pressure detection module is disposed inside a housing of an electronic device and disposed on an inner surface of the housing, and the pressure detection module comprises: a first electrode, a second electrode, a first circuit board, a second circuit board, and at least two solder fixing parts;
a first surface of the first circuit board is fixed to an inner surface of a force input area of the housing, a second surface of the first circuit board is opposite to the first surface of the first circuit board and is fixed to a first surface of the first electrode, and a first surface of the second circuit board faces the second surface of the first circuit board and is fixed to a second surface of the second electrode, wherein the force input area of the housing is an area of the house on which external pressure can be applied;
two end sides of the second surface of the first circuit board and two end sides of the first surface of the second circuit board are disposed opposed to each other through the at least two solder fixing parts, and a compressible insulating layer is provided between a second surface of the first electrode which is opposite to the first surface of the first electrode and a first surface of the second electrode which is opposite to the second surface of the second electrode so that the first electrode and the second electrode form a capacitor; and
the force input area of the housing is configured to deform upon receiving the external pressure to cause a distance between the first electrode and the second electrode changes, so that a capacitance between the first electrode and the second electrode changes to determine a pressure detection result on the external pressure.