Patent attributes
A trigger device is provided. The trigger device includes a controller, a screen assembly, an extendible support assembly operable to support the screen assembly, and a drive assembly operable to drive the support assembly. The drive assembly is provided with a first contact, and the support assembly is provided with a second contact movable relative to the second contact. During retraction or extension of the support assembly, the first contact and the second contact move relative to each other between a contacting state and a separating state. The controller determines whether the support assembly is in the retraction state or the extension state according to the contacting state or the separating state of the first contact and the second contact, so as to control display of the screen assembly. A smart bracelet is further provided.
