摘要:
The present invention relates to a method of manufacturing a wafer in which a heterogeneous material compound is split at a pre-determined splitting area of the compound, and the compound is subject to a thermal treatment. It is the object of the present invention to provide an easy and effective method of splitting a heterogeneous material compound with a reduced risk of an undefined breaking of the compound. The object is solved by a method of the above-mentioned type characterised in that the thermal treatment comprises: an annealing of the compound which is stopped before a splitting of the compound; and an irradiation of the compound with photons in order to obtain a splitting of the compound at the pre-determined splitting area.
摘要:
Un procédé de report de couches minces successives d'un matériau semi-conducteur d'une plaquette donneuse vers une plaquette receveuse comprend les étapes suivantes :
(a) assembler une tranche massive constituée du matériau semi-conducteur avec un support pour former la plaquette donneuse avec une couche donneuse (102) dudit matériau semi-conducteur et une couche support (20), (b) créer dans la couche donneuse une zone de fragilisation (12), (c) coller la plaquette donneuse sur la plaquette receveuse (40) au niveau de la face libre de la couche donneuse, (d) effectuer une séparation au niveau de la zone de fragilisation, une couche mince (101) du matériau semi-conducteur étant ainsi reportée de la plaquette donneuse sur la plaquette receveuse, et (e) répéter les opérations (b) à (d) sans que la couche support de la plaquette donneuse ne soit entamée.
Un procédé d'obtention d'une plaquette donneuse est également proposé.
摘要:
Un procédé de report de couches minces successives d'un matériau semi-conducteur d'une plaquette donneuse vers une plaquette receveuse comprend les étapes suivantes : (a) assembler une tranche massive constituée du matériau semi-conducteur avec un support pour former la plaquette donneuse avec une couche donneuse (102) dudit matériau semi-conducteur et une couche support (20), (b) créer dans la couche donneuse une zone de fragilisation (12), (c) coller la plaquette donneuse sur la plaquette receveuse (40) au niveau de la face libre de la couche donneuse, (d) effectuer une séparation au niveau de la zone de fragilisation, une couche mince (101) du matériau semi-conducteur étant ainsi reportée de la plaquette donneuse sur la plaquette receveuse, et (e) répéter les opérations (b) à (d) sans que la couche support de la plaquette donneuse ne soit entamée. Un procédé d'obtention d'une plaquette donneuse est également proposé.
摘要:
The invention relates to a method for manufacturing a material compound wafer, in particular a heterogeneous material compound, more in particular a heterogeneous material compound comprising at least two materials with different physical and/or chemical properties, in particular with different thermal expansion coefficients, comprising the steps of forming a predetermined splitting area in a source substrate, attaching the source substrate to a handle substrate to form a source-handle-compound and thermal annealing of the source substrate for weakening of the source substrate at the predetermined splitting area. In order to achieve better quality material compound wafers and a higher production yield the method further comprises determining of a degree of weakening characterizing the physical strength of the weakened predetermined splitting area which is carried out during and/or after the thermal annealing step. The invention furthermore relates to a thermal annealing device used in the manufacturing process of a material compound wafer.
摘要:
The present invention relates to a method for recycling a substrate, especially a wafer, said substrate having a profile with a surface and a collar, wherein an interface provided between said surface and said collar has been formed by a previous separation step, and said profile is further planarised for obtaining a plane surface. In order to provide an improved method of the above-mentioned type which allows a substrate to be reused more often and enables the recycled substrate to be produced with a low total thickness variance, wherein a good planar surface quality is obtained, it is suggested that the method comprises a severing of the collar from said surface and said interface in a separate step.
摘要:
The invention concerns a method of preparation of a wafer (1), in particular a silicon on insulator (SOI) or silicon on quartz (SOQ) type wafer (7,15), designated to be used in the fabrication of devices for optical, electronic, opto-electronic or micro-mechanical applications, wherein the wafer comprises a front side (2) and a backside (3), and wherein functional structures (16) are created on or in at least the front side (2) of the wafer (1,7,15) during the fabrication process. In order to make wafer handling less critical and to obtain wafers with a good final product quality it is suggested to provide a cap layer on or in the backside of the wafer. Furthermore the invention also concerns a wafer (1), as described above, where a cap layer (4) is provided on or in the backside (3) surface of the wafer (1,7,15).
摘要:
The present invention relates to a method for recycling a surface of a substrate, especially a silicon wafer, wherein the surface comprises a separation profile which has been formed by a separation step and said separation step has been carried out after an implantation of a substance into the substrate, wherein said separation profile is planarised by removing material from the surface for obtaining a plane uniform surface. It is the object of the present invention to provide a method for recycling of a surface of a substrate by which the recycled surface can be more often reused and wherein the recycled substrate has a good thickness variance. This object is solved by a method of the above-mentioned type characterised in that only the region of said surface being close to the edge of said substrate is planarised by a successive thinning of the material of said region in a separate step.