Patent ID: 9142369
Filing Date: 2015-09-22
Classification: G06F,H01H,H04M

Abstract:
1. A modular stack assembly for use as at least a part of a keypad for a mobile computing device, the stack assembly comprising: an electrical contact layer on which a plurality of contact elements are provided; an actuation member layer on which a plurality of actuation members are provided, wherein each actuation member in the plurality of actuation members extends inward from a corresponding key structure of a key structure layer and is aligned so that an axial movement of that actuation member causes a corresponding one of the plurality of contact elements to actuate; and an illumination layer configured to emit light to the keypad, the illumination layer comprising a plurality of discrete light sources that are positioned underneath the actuation member layer and the key structure layer; wherein the electrical contact layer, the actuation member layer and the illumination layer are integrally combined to form at least a portion of the modular stack assembly; wherein the modular stack assembly is structured to be capable of being combined, as a single unit, with a housing of the mobile computing device during an assembly process for manufacturing the mobile computing device.