Patent ID: 8640943

Claim:
A method of fabricating a semiconductor integrated circuit device, comprises the steps of: providing a matrix substrate on which a plurality of device areas each for the semiconductor integrated circuit device are formed in a matrix array; disposing the matrix substrate above a plurality of semiconductor chips; establishing a temporary bonding between the plurality of semiconductor chips and the matrix substrate by pressurizing the plurality of semiconductor chips by a first pressure and heating the plurality of semiconductor chips; after establishing the temporary bonding, disposing the plurality of semiconductor chips onto a heating stage and establishing a main bonding between the plurality of semiconductor chips and the matrix substrate by pressurizing, by a second pressure, the plurality of semiconductor chips corresponding respectively to a plurality of pressure blocks while heating the plurality of semiconductor chips directly by the heating stage, the plurality of pressure blocks each being supported for independent movement in corresponding relation to the plurality of semiconductor chips to bond the plurality of semiconductor chips to the matrix substrate by thermocompression bonding simultaneously in one or plural rows in a width direction of the matrix-arrayed device areas on the matrix substrate, wherein the second pressure is higher than the first pressure, and wherein, prior to disposing the plurality of semiconductor chips onto the heating stage, the plurality of pressure blocks and the heating stage are brought into contact with each other, and then, in this state, the pressure applied to the plurality of pressure blocks is raised gradually, and a point of change of a load imposed on a load change detecting means is detected by the load change detecting means, the load chance detecting means being connected to support block portions for supporting the plurality of pressure blocks to determine the magnitude of a set value of the pressure applied to the plurality of pressure blocks at the time of thermocompression-bonding the plurality of semiconductor chips disposed on the heating stage to the substrate.