Texas Instruments Incorporated
Securing a touch sensor assembly within a device

Abstract:

An arrangement for securing a touch sensor assembly within a mobile communication or other device with at least one touch button defined within a touch button area. The touch sensor assembly includes a touch sensor (such as a sense inductor coil), and multiple back-side spring clips attached at the back-side of the sensor assembly. A touch sensor pocket integral with the device case is disposed at an interior-side of the touch button area, the sensor pocket to position the sensor assembly relative to the associated touch button. The touch sensor assembly can be secured within the touch sensor pocket by the back-side spring clips, spring-urged toward the front-side of the sensor pocket, and spaced from the device case by spacer elements (which can be attached to the sensor assembly, or integrated into the device case). The touch sensor pocket can include back-side alignment elements for aligning the spring clips.