Wafer manufacturing method and device
The invention relates to a device for manufacturing semiconductor material wafers with a sawing device for the sawing of slices attached to a saw holder, a pre-cleaning device arranged in the process direction downstream of the sawing device for pre-cleaning the surfaces of the slices hanging on the saw holder, and a degluing device arranged downstream in the process direction for detaching the slices from the saw holder.
1. A method for manufacturing semiconductor wafers comprising the following steps:
sawing of columns attached to a saw holder ( 1 ) into slices ( 3 ), wherein the slices have a longitudinal axis coinciding with a longitudinal axis of the columns,
pre-cleaning of the slices ( 3 ) attached to the saw holder ( 1 ) and in,
removing of the slices ( 3 ) from the saw holder ( 1 ) and catching of the slices ( 3 ) in a catching device ( 4 ), and
further processing of the separated slices ( 3 ),
wherein the slices introduced into said catching device are tilted along their longitudinal axis against the horizontal while still on the saw holder ( 1 ) and while equipped with the catching device.
2. A method according to claim 1 , wherein the slices ( 3 ) connected to the saw holder ( 1 ) are transported from the sawing to the pre-cleaning in a wagon.
3. A method according to claim 2 , wherein the pre-cleaning is carried out with water or an aqueous tenside solution at 10 to 45° C.
4. A method according to claim 3 , wherein the removal of the slices ( 3 ) from the saw holder ( 1 ) is carried out with at least one of water and an aqueous tenside solution and an aqueous solution of an organic acid at 60 to 100° C.
5. A method according to claim 4 , wherein the removal of the slices ( 3 ) from the saw holder ( 1 ) is carried out with at least one of water and an aqueous tenside solution and an aqueous solution of an organic acid at 70 to 95° C.
6. A method according to claim 3 , wherein the pre-cleaning is carried out with water or an aqueous tenside solution at 20 to 35° C.
7. A method according to claim 6 , wherein after the removal from the saw holder ( 1 ) the singularised slices ( 3 ) are cooled down, especially cooled down to a temperature of 40 to 60° C.
8. A method according to claim 7 , wherein, after the cooling down, the separated slices ( 3 ) are conveyed in a wagon to the further processing.