Patent ID: 8794287
Filing Date: 2014-08-05
Classification: H01L,Y10T

Abstract:
1. A wafer bonding apparatus comprising: an upper unit; a lower unit; and a pressurizing unit, wherein plural wafers to be bonded are pressurized and heated between the upper unit and the lower unit, wherein at least one of the upper unit and the lower unit includes a plurality of heating modules, the plurality of heating modules being concentrically arranged such that at least one heating module is disposed at a position corresponding to the central portion of said one of the upper unit or the lower unit, and the other heating modules are circumferentially disposed in surroundings of the central portion, and each of the heating modules includes a separate heater, wherein each of the heating modules is supported such that each of the heating modules is capable of individually transmitting pressuring force when the pressurizing unit pressurizes the plural wafers through the plurality of heating modules.