Thin hinge

A thin hinge, comprising:

• a holding seat including a base, a housing space formed on the base, an assembly portion located at one end of the base and a linear slide track located at another end of the base opposite to the assembly portion and communicating with the housing space;
• an arc-shaped driven member which is located in the housing space and includes an operational portion, a curved portion connected to the operational portion and a driving portion extended from the curved portion toward the operational portion and connected to the assembly portion to form a pivotal relationship therewith;
• and
• a torsional force generation assembly including at least one driving arm pivotaly connected to the junction of the driving portion and the curved portion, a slide seat connected to the driving arm and located in the housing space corresponding to the linear slide track, a detent plate located at another side of the linear slide track facing the housing space and corresponding to the slide seat, and at least one torsional spring corresponding to the detent plate and coupled with the slide seat and the detent plate to provide a torsional force while the slide seat is moved by the driving arm to slide on the linear slide track.