53.
    发明专利
    未知

    公开(公告)号:DE68927364T2

    公开(公告)日:1997-03-06

    申请号:DE68927364

    申请日:1989-08-31

    Applicant: CANON KK

    Abstract: A wafer chuck (2) usable with a semiconductor exposure apparatus (Fig.2A) wherein a mask and a semiconductor wafer (1) are placed in a vacuum ambience or a pressure-reduced gas ambience, and wherein the wafer (1) is exposed through the mask to radiation energy such as X-rays contained in a synchrotron radiation beam, by which the pattern of the mask is transferred onto the wafer (1). The wafer (1) is first attracted on the wafer supporting surface of the chuck (2) by vacuum attraction (21), and thereafter, the wafer (1) is attracted by electrostatic attraction force. Thereafter, the vacuum attraction is broken by supplying (24) a gas. Preferably Helium or other thermally conductive gas is admitted at this point. When the pattern of the mask is transferred onto the wafer (1), the wafer (1) is retained on the wafer supporting surface (20) by the electrostatic attraction force only. By this, the wafer supporting apparatus can correctly contact the wafer supporting surface (20) to the wafer (1) without being influenced by the undulation of the wafer (1). In addition, the heat produced in the wafer (1) during exposure can be removed efficiently by temperature controlled (23) water (11) supplied to the wafer supporting apparatus (2).

    55.
    发明专利
    未知

    公开(公告)号:DE68925604T2

    公开(公告)日:1996-07-11

    申请号:DE68925604

    申请日:1989-09-04

    Applicant: CANON KK

    Abstract: Synchrotron orbital radiation (SOR) exposure system includes a SOR ring (8) and a plurality (15a-15c) of exposure apparatus each being coupled to the SOR ring and being arranged to expose a wafer to a mask pattern with X-rays contained in synchrotron radiation from the SOR ring (8) to thereby print the mask pattern on the wafer. Specific arrangement is provided to allow communication of a control of the SOR ring and respective controls of the exposure apparatuses. If any abnormality such as vacuum leakage occurs in one exposure apparatus, the information is transmitted to all the controls to start, in all the exposure apparatuses, appropriate operations to protect the exposure apparatuses against the abnormality. This makes it possible to prevent stoppage of the SOR exposure system as a whole even when any abnormality occurs in one exposure apparatus.

    59.
    发明专利
    未知

    公开(公告)号:DE3850996T2

    公开(公告)日:1994-12-15

    申请号:DE3850996

    申请日:1988-04-27

    Applicant: CANON KK

    Abstract: A charged-particle beam pattern drawing apparatus for drawing, by use of a charged-particle beam, a desired circuit pattern on a workpiece (WF) having a surface coated with a sensitive material, is disclosed. The apparatus includes a data source CAD, PG, MU, ML) having stored therein a data related to the circuit pattern, a plurality of charged-particle beam producing sources (ES0-ES15) for emitting charged-particle beams toward the workpiece, in accordance with the data supplied thereto from the data source, and a plurality of deflecting electrodes (X1,X2,Y1, Y2) each being provided for corresponding one of the charged-particle beam producing sources, for deflecting the charged-particle beams from the charged-particle beam producing sources independently of each other and in accordance with the data supplied from the data source.

    60.
    发明专利
    未知

    公开(公告)号:DE3850996D1

    公开(公告)日:1994-09-15

    申请号:DE3850996

    申请日:1988-04-27

    Applicant: CANON KK

    Abstract: A charged-particle beam pattern drawing apparatus for drawing, by use of a charged-particle beam, a desired circuit pattern on a workpiece (WF) having a surface coated with a sensitive material, is disclosed. The apparatus includes a data source CAD, PG, MU, ML) having stored therein a data related to the circuit pattern, a plurality of charged-particle beam producing sources (ES0-ES15) for emitting charged-particle beams toward the workpiece, in accordance with the data supplied thereto from the data source, and a plurality of deflecting electrodes (X1,X2,Y1, Y2) each being provided for corresponding one of the charged-particle beam producing sources, for deflecting the charged-particle beams from the charged-particle beam producing sources independently of each other and in accordance with the data supplied from the data source.

Patent Agency Ranking