Patents Assigned to SOITEC & CEA
  • Publication number: 20040166649
    Abstract: The invention relates to a method of removing a peripheral zone of adhesive while using a layer of adhesive in the process of assembling and transferring a layer of material from a source substrate to a support substrate. The method is remarkable in that it includes bonding the two substrates together by means of a curable adhesive so that an excess of adhesive is present. This assures proper bonding and provides a peripheral zone of adhesive outside of the joined substrates. Only that portion of adhesive is cured which is present in a connection zone between the substrates, and the peripheral zone of non-cured adhesive is removed prior to detaching the transferable layer. The invention is applicable to fabricating a composite substrate in the fields of electronics, opto-electronics, or optics.
    Type: Application
    Filed: January 6, 2004
    Publication date: August 26, 2004
    Applicant: SOITEC & CEA
    Inventors: Severine Bressot, Olivier Rayssac, Bernard Aspar
  • Publication number: 20040161904
    Abstract: The present invention relates to a method for manufacturing a heterogeneous material structure. The method includes forming a predetermined detachment area in a source substrate, and bonding the source substrate to a handle substrate to form a source-handle structure. The source-handle-structure is then annealed at a first energy level that is lower than the energy of a thermal detachment budget and stopping before detachment of the source substrate. Lastly, the source-handle-structure is annealed at a second energy level that is lower than the first energy level at least until the substrate detaches at the predetermined detachment area.
    Type: Application
    Filed: December 10, 2003
    Publication date: August 19, 2004
    Applicant: SOITEC & CEA
    Inventors: Cecile Berne, Bruno Ghyselen, Chrystelle Lagahe, Thibaut Maurice