公开(公告)号：US10093086B2

公开(公告)日：2018-10-09

申请号：US15256265

申请日：2016-09-02

Applicant: Soitec

Inventor： Didier Landru ,  Christophe Figuet

IPC: H01L21/762 ,  H01L21/67 ,  B32B43/00 ,  H01L21/20 ,  H01L21/683

Abstract: A process for separating at least two substrates comprising at least two separation interfaces along one of the interfaces includes, before inserting a blade between the substrate, damaging at least one portion of a peripheral region of a chosen one of the interfaces, then inserting the blade and partially parting the substrates, and applying a fluid in a space between the parted substrates while the blade remains inserted therebetween, and decreasing a rupture energy of the chosen interface by stress corrosion involving breaking of siloxane bonds present at the interface.

公开(公告)号：US20160056052A1

公开(公告)日：2016-02-25

申请号：US14779477

申请日：2014-03-03

Applicant: SOITEC

Inventor： Didier Landru ,  Oleg Kononchuk

IPC: H01L21/322 ,  H01L21/324

CPC classification number: H01L21/3225 ,  H01L21/3226 ,  H01L21/324 ,  H01L21/7624

Abstract: This disclosure relates to a method for dissolving a silicon dioxide layer in a structure, including, from the back surface thereof to the front surface thereof, a supporting substrate, the silicon dioxide layer and a semiconductor layer, the dissolution method being implemented in a furnace in which structures are supported on a support, the dissolution method resulting in the diffusion of oxygen atoms included in the silicon dioxide layer through the semiconductor layer and generating volatile products, and the furnace including traps suitable for reacting with the volatile products, so as to reduce the concentration gradient of the volatile products parallel to the front surface of at least one structure.

Abstract translation: 本公开涉及一种将二氧化硅层溶解在结构中的方法，包括从其后表面到其前表面的支撑衬底，二氧化硅层和半导体层，该溶解方法在炉中实施 其中结构支撑在载体上，溶解方法导致二氧化硅层中包含的氧原子扩散通过半导体层并产生挥发性产物，并且该炉包括适于与挥发性产物反应的阱，以便 降低与至少一个结构的前表面平行的挥发性产物的浓度梯度。

公开(公告)号：US08735946B2

公开(公告)日：2014-05-27

申请号：US14027528

申请日：2013-09-16

Applicant: Soitec

Inventor： Mohamad A Shaheen ,  Frederic Allibert ,  Gweltaz Gaudin ,  Fabrice Lallement ,  Didier Landru ,  Karine Landry ,  Carlos Mazure

IPC: H01L27/148

CPC classification number: H01L29/78603 ,  H01L29/32 ,  H01L29/7841 ,  H01L31/0248

Abstract: Embodiments of the invention relate to substrates comprising a base wafer, an insulating layer and a top semiconductor layer, wherein the insulating layer comprises at least a zone wherein a density of charges is in absolute value higher than 1010 charges/cm2. The invention also relates to processes for making such substrates.

Abstract translation: 本发明的实施例涉及包括基底晶片，绝缘层和顶部半导体层的基板，其中绝缘层至少包括电荷密度高于1010电荷/ cm 2的绝对值的区域。 本发明还涉及制造这种基材的方法。

公开(公告)号：US12142517B2

公开(公告)日：2024-11-12

申请号：US17436532

申请日：2020-02-26

Applicant: Soitec

Inventor： Didier Landru ,  Oleg Kononchuk ,  Nadia Ben Mohamed

IPC: H01L21/762

Abstract: A method for transferring a useful layer from a donor substrate to a carrier substrate comprises: a) providing the donor substrate, the donor substrate including a buried weakened plane; b) providing the carrier substrate; c) joining the donor substrate to the carrier substrate to form a bonded structure; and d) annealing the bonded structure in order to increase the level of weakening of the buried weakened plane. A predetermined stress is applied to the buried weakened plane during the annealing for a period of time, the predetermined stress being selected so as to initiate the splitting wave once a given level of weakening has been reached. At the end of the period of time, the given level of weakening having been reached, the predetermined stress causes initiation and self-sustained propagation of the splitting wave along the buried weakened plane, resulting in the useful layer being transferred to the carrier substrate.

公开(公告)号：US20240222158A1

公开(公告)日：2024-07-04

申请号：US18608134

申请日：2024-03-18

Applicant: Soitec

Inventor： Didier Landru ,  Oleg Kononchuk ,  Nadia Ben Mohamed

IPC: H01L21/67 ,  H01L21/762

CPC classification number: H01L21/67092 ,  H01L21/67023 ,  H01L21/76254

Abstract: A system for fracturing a plurality of wafer assemblies, one of the wafers of each assembly comprising a plane of weakness and each assembly comprising a peripheral lateral groove comprises: a cradle for keeping the assemblies of the plurality of assemblies spaced apart and parallel to one another, along a storage axis; a separation device for applying separating forces in the peripheral groove of an assembly arranged in a fracture zone of the separating device, the separating force aiming to separate the wafers of the assembly from one another so as to initiate its fracture at the plane of weakness; and a drive device configured to move along the storage axis of the cradle opposite the separating device so as to successively place an assembly of the cradle in the fracture zone of the separation device.

公开(公告)号：US12002690B2

公开(公告)日：2024-06-04

申请号：US17435899

申请日：2020-02-26

Applicant: Soitec

Inventor： Didier Landru ,  Oleg Kononchuk ,  Nadia Ben Mohamed

IPC: H01L21/67 ,  H01L21/762

CPC classification number: H01L21/67092 ,  H01L21/67023 ,  H01L21/76254

Abstract: A system for fracturing a plurality of wafer assemblies, one of the wafers of each assembly comprising a plane of weakness and each assembly comprising a peripheral lateral groove comprises: a cradle for keeping the assemblies of the plurality of assemblies spaced apart and parallel to one another, along a storage axis; a separation device for applying separating forces in the peripheral groove of an assembly arranged in a fracture zone of the separating device, the separating force aiming to separate the wafers of the assembly from one another so as to initiate its fracture at the plane of weakness; and a drive device configured to move along the storage axis of the cradle opposite the separating device so as to successively place an assembly of the cradle in the fracture zone of the separation device.

公开(公告)号：US20240112908A1

公开(公告)日：2024-04-04

申请号：US18546057

申请日：2022-03-14

Applicant: Soitec

Inventor： Hugo Biard ,  Didier Landru

IPC: H01L21/02 ,  H01L21/20 ,  H01L21/265

CPC classification number: H01L21/02362 ,  H01L21/2007 ,  H01L21/265

Abstract: A method of manufacturing a composite structure comprises: a) providing a donor substrate of a single-crystal semiconductor material, b) implanting ions into the donor substrate, excluding an annular peripheral region, to form a buried brittle plane, the implantation conditions defining a first thermal budget for obtaining bubbling on a face of the donor substrate and a second thermal budget for obtaining a fracture in the brittle plane, c) forming a stiffening film on the donor substrate, carried out by applying a thermal budget lower than the first thermal budget, the stiffening film being perforated in the form of a mesh, the perforated stiffening film leaving a plurality of zones of the front face bare, d) depositing a carrier substrate on the donor substrate carried out by applying a thermal budget greater than the first thermal budget, and e) separating the donor substrate along the brittle plane.

公开(公告)号：US11881429B2

公开(公告)日：2024-01-23

申请号：US17439300

申请日：2020-02-26

Applicant: Soitec

Inventor： Didier Landru ,  Oleg Kononchuk ,  Nadia Ben Mohamed

IPC: H01L21/762 ,  H01L21/265 ,  H01L21/78

CPC classification number: H01L21/76254 ,  H01L21/26506 ,  H01L21/7806

Abstract: A method for transferring a useful layer to a carrier substrate, includes the following steps: a) providing a donor substrate including a buried weakened plane; b) providing a carrier substrate; c) joining the donor substrate, by its front face, to the carrier substrate along a bonding interface so as to form a bonded structure; d) annealing the bonded structure in order to apply a weakening thermal budget thereto and to bring the buried weakened plane to a defined level of weakening; and e) initiating a splitting wave in the weakened plane by applying a stress to the bonded structure, the splitting wave self-propagating along the weakened plane to result in the useful layer being transferred to the carrier substrate. The splitting wave is initiated when the bonded structure is subjected to a temperature between 150° C. and 250° C.

公开(公告)号：US11876015B2

公开(公告)日：2024-01-16

申请号：US17435631

申请日：2020-02-26

Applicant: Soitec

Inventor： Didier Landru ,  Oleg Kononchuk ,  Nadia Ben Mohamed ,  Franck Colas

IPC: H01L21/762 ,  H01L21/78 ,  H01L21/304

CPC classification number: H01L21/76254 ,  H01L21/3043 ,  H01L21/7806

Abstract: A method for transferring a useful layer to a carrier substrate comprises: joining a front face of a donor substrate to a carrier substrate along a bonding interface to form a bonded structure; annealing the bonded structure to apply a weakening thermal budget thereto and bring a buried weakened plane in the donor substrate to a defined level of weakening, the anneal reaching a maximum hold temperature; and initiating a self-sustained and propagating splitting wave in the buried weakened plane by applying a stress to the bonded structure to lead to the useful layer being transferred to the carrier substrate. The initiation of the splitting wave occurs when the bonded structure experiences a thermal gradient defining a hot region and a cool region of the bonded structure, the stress being applied locally in the cool region, and the hot region experiencing a temperature lower than the maximum hold temperature.

公开(公告)号：US11219851B2

公开(公告)日：2022-01-11

申请号：US16341390

申请日：2017-09-21

Applicant: Soitec

Inventor： Didier Landru ,  Oleg Kononchuk

IPC: B01D50/00 ,  B01D46/00 ,  H01L21/67 ,  B01D39/06

Abstract: A vertical furnace includes a chamber intended for receiving a loading column, an inlet channel for fresh gas, arranged at an upper end of the chamber, the loading column comprising an upper portion, and a central portion for supporting a plurality of substrates. The vertical furnace further comprises a trapping device made of at least one material suitable for trapping all or part of the contaminants present in the fresh gas. The trapping device includes a circular part arranged on the upper part of the loading column, the circular part comprising fins regularly distributed over an upper surface of the circular part in order to increase the contact surface of the trapping device with the fresh gas.