AIRBAG FOR SEAT AND METHOD OF CONTROLLING DEPLOYMENT THEREOF

Disclosed are an airbag for a seat capable of quickly and safely supporting an occupant's body parts in order to reduce the risk of injury to the occupant and a method of controlling deployment thereof. The airbag includes an airbag cushion configured to be deployed so as to cover areas ahead of and above a seat, an active wire connected between each of two side surfaces of the seat and a respective one of two side surfaces of the airbag cushion, an active mechanism configured to generate force of pulling the active wire connected to the airbag cushion toward an occupant, and a controller configured to apply an operation command to the active mechanism during operation of the airbag to control the active mechanism to pull the active wire so that the airbag cushion is pulled toward the occupant.