Patent ID: 11894248
Assignee: DISCO CORPORATION
Field: Other special machines (Mechanical engineering)
Classification: CPC H  B | IPC B  H

Claim 0:
1. A protective member attaching apparatus for attaching a thermoplastic resin sheet to a front surface of a substrate having projections and recesses on the front surface side, the protective member attaching apparatus comprising:
a pressure reduction chamber that includes an upper housing and a lower housing separable from the upper housing, with a pressure reduction unit and an atmospheric air opening unit connected respectively to the upper housing and the lower housing;
a support table that is provided inside the lower housing and on which the substrate is mounted;
a sheet fixing section for fixing a sheet in such a manner as to partition an inside space of the pressure reduction chamber into the upper housing side and the lower housing side when the upper housing and the lower housing are united;
a heating unit that heats the sheet to soften the sheet; and
a control unit that controls the pressure reduction chamber and the heating unit to reduce pressures inside the upper housing and the lower housing, and thereafter softens and brings the sheet into close contact with the substrate mounted on the support table by a differential pressure generated by opening the upper housing to the atmospheric air,
wherein the sheet fixing section has:
an outer periphery fixing section that fixes an outer periphery of the sheet, wherein the outer periphery fixing section is positioned between the upper housing and the sheet and is configured and arranged to restrict gas from passing between the upper housing and the sheet when the upper housing and the lower housing are united, and
a temporary fixing section that holds that region of the sheet that faces the support table from the upper housing side and temporarily fixes the sheet to the substrate mounted on the support table through a gap between the sheet and the substrate, and

the temporary fixing section is a support plate provided on a lower surface thereof with a resin layer for holding the sheet by a tack force, and the resin layer and the support plate are formed with ventilation holes.