New Three-Dimensional Wafer Bonding Technology Using the Adhesive Injection Method

A new three-dimensional (3D) wafer bonding technology using the adhesive injection method has been proposed, in order to realize a real-time micro-vision system and a real shared memory. Several key technologies for 3D LSI, such as deep trench formation for buried interconnection, wafer grinding and chemical-mechanical polishing, wafer alignment and wafer bonding using the adhesive injection method, have been developed.