US 11,893,156 B2
Information handling system touchpad with mechanical uniform touch response
Chin-Chung Wu, Taipei (TW); Hu Shih Chang, New Taipei (TW); and Chih-Ping Chang, Taipei (TW)
Assigned to Dell Products L.P., Round Rock, TX (US)
Filed by Dell Products L.P., Round Rock, TX (US)
Filed on Oct. 25, 2021, as Appl. No. 17/509,267.
Prior Publication US 2023/0126341 A1, Apr. 27, 2023
Int. Cl. G06F 3/041 (2006.01); G06F 3/01 (2006.01)
CPC G06F 3/016 (2013.01) [G06F 3/041 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An information handling system comprising:
a portable housing having an upper surface;
a processor disposed in the portable housing and operable to execute instructions to process information;
a memory disposed in the portable housing and operable to store the instructions and information;
an embedded controller interfaced with the processor and operable to manage inputs from input devices for communication to the processor; and
a touchpad disposed at the upper surface, the touchpad having an exposed touch surface that detects touch inputs, a base plate disposed under the touch surface fixed in position relative to the portable housing upper surface and supporting a central button, and a trigger bracket disposed between the touch surface and base plate, the trigger bracket having a frame aligned with a perimeter of the touch surface and a beam extending across the frame and a central location of the touch surface, the beam biasing the touch surface away from the base plate and having an opening at the central location through which the central button is exposed to a bottom surface of the touch surface, the touchpad detecting a button input press based upon contact of the central button against the bottom surface of the touch surface.