Invention Application
- Patent Title: Capacitive Baselining
- Patent Title (中): 电容基准
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Application No.: US14776628Application Date: 2014-02-11
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Publication No.: US20160041648A1Publication Date: 2016-02-11
- Inventor: Peter W. Richards
- Applicant: APPLE INC.
- International Application: PCT/US14/15864 WO 20140211
- Main IPC: G06F3/044
- IPC: G06F3/044 ; G06F3/041

Abstract:
A force sensing device for electronic device. The force inputs may be detected by measuring changes in capacitance, as measured by surface flex of a device having a flexible touchable surface, causing flex at a compressible gap within the device. A capacitive sensor is responsive to changes in distance across the compressible gap. The sensor can be positioned above or below, or within, a display element, and above or below, or within, a backlight unit. The device can respond to bending, twisting, or other deformation, to adjust those zero force measurements. The device can use measure of surface flux that appear at positions on the surface not directly the subject of applied force, such as when the user presses on a part of the frame or a surface without capacitive sensors.
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