Patents Assigned to SILTECTRA GMBH
  • Patent number: 11059202
    Abstract: A method for creating modifications in a solid-state material is described, wherein a crack guidance region for guiding a crack for separating a solid-state layer from the solid-state material is predetermined by the modifications. The method includes: moving the solid-state material relative to a laser processing system; successively emitting a plurality of laser beams from the laser processing system to the solid-state material to create at least one modification within the solid-state material; and continuously adjusting the laser processing system for defined focusing of the plurality of laser beams and/or for adjustment of energy of the plurality of laser beams as a function of at least one parameter.
    Type: Grant
    Filed: December 12, 2016
    Date of Patent: July 13, 2021
    Assignee: Siltectra GmbH
    Inventors: Ralf Rieske, Christian Beyer, Christoph Guenther, Jan Richter, Marko Swoboda
  • Patent number: 11014199
    Abstract: The invention relates to a method for creating a detachment zone (2) in a solid (1) in order to detach a solid portion (12), especially a solid layer (12), from the solid (1), said solid portion (12) that is to be detached being thinner than the solid from which the solid portion (12) has been removed.
    Type: Grant
    Filed: April 30, 2020
    Date of Patent: May 25, 2021
    Assignee: Siltectra GmbH
    Inventor: Christian Beyer
  • Patent number: 11004723
    Abstract: A method for producing a layer of solid material includes: providing a solid body having opposing first and second surfaces, the second surface being part of the layer of solid material; generating defects by means of multiphoton excitation caused by at least one laser beam penetrating into the solid body via the second surface and acting in an inner structure of the solid body to generate a detachment plane, the detachment plane including regions with different concentrations of defects; providing a polymer layer on the solid body; and subjecting the polymer layer to temperature conditions to generate mechanical stress in the solid body, including cooling of the polymer layer to a temperature below ambient temperature, the cooling taking place such that due to stresses a crack propagates in the solid body along the detachment plane and the layer of solid material separates from the solid body along the crack.
    Type: Grant
    Filed: February 18, 2020
    Date of Patent: May 11, 2021
    Assignee: Siltectra GmbH
    Inventors: Wolfram Drescher, Jan Richter, Christian Beyer
  • Patent number: 10994442
    Abstract: The invention relates to a method for separating solid-body slices (1) from a donor substrate (2).
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: May 4, 2021
    Assignee: Siltectra GmbH
    Inventors: Marko Swoboda, Christian Beyer, Franz Schilling, Jan Richter
  • Patent number: 10978311
    Abstract: The present invention relates to a method for separating at least one solid-body layer (4) from at least one solid body (1). Thereby, the method as claimed in the invention comprises the steps: creating a plurality of modifications (9) by means of laser beams within the interior space of the solid body (1) to form a detachment plane (8), producing a composite structure by arranging or producing layers and/or components (150) on or above an initially exposed surface (5) of the solid body (1), wherein the exposed surface (5) is an integral part of the solid-body layer (4) to be separated, introducing an external force into the solid body (1) for generating tensions within the solid body (1), wherein the external force is so strong that the tensions initialize a crack propagation along the detachment plane (8), wherein the modifications for forming the detachment plane (8) are created before producing the composite structure.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: April 13, 2021
    Assignee: Siltectra GmbH
    Inventors: Wolfram Drescher, Marko Swoboda, Ralf Rieske, Christian Beyer, Jan Richter
  • Patent number: 10960574
    Abstract: A method for producing solid layers includes: providing a solid for separating at least one solid layer; fixing an accommodating layer for holding the solid layer on the solid, wherein the accommodating layer has a multiplicity of holes for conducting a liquid, wherein the accommodating layer is fixed on the solid by means of a connecting layer; and thermal loading of the accommodating layer for mechanical generation of stresses in the solid. A crack in the solid propagates along a detachment plane due to the stresses. The solid layer is separated from the solid by means of the crack. The accommodating layer includes at least one polymer material, and the polymer material undergoes a glass transition at a temperature lower than 0° C.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: March 30, 2021
    Assignee: Siltectra GmbH
    Inventors: Jan Richter, Christian Beyer, Anas Ajaj
  • Patent number: 10930560
    Abstract: A method for creating a detachment area in a solid, in particular for detaching the solid along the separating region. Said solid portion that is to be detached is thinner than the solid body from which the solid portion has been removed. Said method preferably comprises at least the following steps: the crystal lattice of the solid is modified by means of a modifying agent, in particular by means of at least one laser, in particular a pico- or femtosecond laser. The modifications, in particular the laser beams penetrate into the solid via a surface of the solid portion which is to be detached, several modifications are created in the crystal lattice, said crystal lattice penetrates, following said modifications, in the areas surrounding the modifications, at least in one particular part.
    Type: Grant
    Filed: November 27, 2015
    Date of Patent: February 23, 2021
    Assignee: Siltectra GmbH
    Inventors: Christian Beyer, Jan Richter
  • Patent number: 10858495
    Abstract: A polymer hybrid material, a film comprising the polymer hybrid material, the use of the polymer hybrid material, a splitting method using the polymer hybrid material, and a method for producing the polymer hybrid material are provided for increasing the total yield, i.e. the efficiency with respect to the raw materials used and other resources such as energy and workforce, of a splitting method. The polymer hybrid material for use in a splitting method has at least two solid-body sections produced from a solid-body starting material. The polymer hybrid material comprises a polymer matrix and a first filler and a second filler embedded into the polymer matrix.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: December 8, 2020
    Assignee: Siltectra GmbH
    Inventors: Christian Beyer, Jan Richter, Marko Swoboda
  • Patent number: 10843380
    Abstract: The invention relates to a method for producing a multi-layer assembly.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: November 24, 2020
    Assignee: Siltectra GmbH
    Inventors: Franz Schilling, Wolfram Drescher, Jan Richter
  • Patent number: 10825732
    Abstract: A method of splitting a semiconductor wafer includes: inducing a first stress distribution in the semiconductor wafer by exposing the semiconductor wafer to a first radiation process; inducing a second stress distribution in the semiconductor wafer by exposing the semiconductor wafer to a second radiation process, the second radiation process including applying laser energy to an edge of the semiconductor wafer; and splitting the semiconductor wafer after inducing the first stress distribution and the second stress distribution.
    Type: Grant
    Filed: January 7, 2020
    Date of Patent: November 3, 2020
    Assignee: Siltectra GmbH
    Inventors: Lukas Lichtensteiger, Wolfram Drescher
  • Patent number: 10707068
    Abstract: The present invention relates to a method for producing solid body layers. The claimed method comprises at least the following steps: providing a solid body (2) for separating at least one solid body layer (4), arranging a receiving layer (10) on the solid body for holding the solid body layer (4), said receiving layer being made of at least one polymer and an additional material, said receiving layer, in terms of volume, be made mainly of polymer, the additional material having a greater conductivity than the polymer, and the receiving layer (10) is subjected to thermal stress, in particular, mechanical stress, for generating voltages in the solid body (2), wherein a crack in the solid body (2) along a separation plane (8) expands due to the voltages, the solid layer (4) being separated from the solid body (2) due to the crack.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: July 7, 2020
    Assignee: Siltectra GmbH
    Inventors: Jan Richter, Christian Beyer, Anas Ajaj
  • Patent number: 10676386
    Abstract: The present invention relates to a method for separating solid-body slices (1) from a donor substrate (2). The method comprises the steps of: producing modifications (10) within the donor substrate (2) by means of laser beams (12), wherein a detachment region is predefined by the modifications (10), along which detachment region the solid-body layer (1) is separated from the donor substrate (2), and removing material from the donor substrate (2), starting from a surface (4) extending in the peripheral direction of the donor substrate (2), in the direction of the centre (Z) of the donor substrate (2), in particular in order to produce a peripheral indentation (6).
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: June 9, 2020
    Assignee: Siltectra GmbH
    Inventors: Marko Swoboda, Christian Beyer, Franz Schilling, Jan Richter
  • Patent number: 10661392
    Abstract: The invention relates to a method for creating a detachment zone (2) in a solid (1) in order to detach a solid portion (12), especially a solid layer (12), from the solid (1), said solid portion (12) that is to be detached being thinner than the solid from which the solid portion (12) has been removed.
    Type: Grant
    Filed: October 3, 2019
    Date of Patent: May 26, 2020
    Assignee: Siltectra GmbH
    Inventor: Christian Beyer
  • Patent number: 10593590
    Abstract: A method for the production of layers of solid material is contemplated. The method may include the steps of providing a solid body for the separation of at least one layer of solid material, generating defects by means of at least one radiation source, in particular a laser, in the inner structure of the solid body in order to determine a detachment plane along which the layer of solid material is separated from the solid body, and applying heat to a polymer layer disposed on the solid body in order to generate, in particular mechanically, stresses in the solid body, due to the stresses a crack propagating in the solid body along the detachment plane, which crack separates the layer of solid material from the solid body.
    Type: Grant
    Filed: April 9, 2019
    Date of Patent: March 17, 2020
    Assignee: Siltectra GmbH
    Inventors: Wolfram Drescher, Jan Richter, Christian Beyer
  • Patent number: 10580699
    Abstract: The present invention relates to a method for the production of layers of solid material, in particular for use as wafers. The method may include the following steps: providing a workpiece for the separation of the layers of solid material with the workpiece optionally having at least one exposed surface, producing and/or providing a carrier unit for receiving at least one layer of solid material having the carrier unit optionally having a receiving layer for holding the layer of solid material, attaching the receiving layer to the exposed surface of the workpiece forming a composite structure, producing a break initiation point by means of pre-defined local stress induction in the peripheral region, including at the edge, of the workpiece, and separating the layer of solid material from the workpiece starting from the break initiation point.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: March 3, 2020
    Assignee: Siltectra GmbH
    Inventors: Lukas Lichtensteiger, Wolfram Drescher
  • Patent number: 10312135
    Abstract: A method for the production of layers of solid material is contemplated. The method may include the steps of providing a solid body for the separation of at least one layer of solid material, generating defects by means of at least one radiation source, in particular a laser, in the inner structure of the solid body in order to determine a detachment plane along which the layer of solid material is separated from the solid body, and applying heat to a polymer layer disposed on the solid body in order to generate, in particular mechanically, stresses in the solid body, due to the stresses a crack propagating in the solid body along the detachment plane, which crack separates the layer of solid material from the solid body.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: June 4, 2019
    Assignee: Siltectra, GmbH
    Inventors: Wolfram Drescher, Jan Richter, Christian Beyer
  • Patent number: 10280107
    Abstract: The present invention relates to a method for separating solid-body slices (1) from a donor substrate (2). The method comprises the steps of: producing modifications (10) within the donor substrate (2) by means of laser beams (12), wherein a detachment region is predefined by the modifications (10), along which detachment region the solid-body layer (1) is separated from the donor substrate (2), and removing material from the donor substrate (2), starting from a surface (4) extending in the peripheral direction of the donor substrate (2), in the direction of the center (Z) of the donor substrate (2), in particular in order to produce a peripheral indentation (6).
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: May 7, 2019
    Assignee: Siltectra, Gmbh
    Inventors: Marko Swoboda, Christian Beyer, Franz Schilling, Jan Richter
  • Patent number: 10269643
    Abstract: The present invention relates to a method for the production of layers of solid material, in particular for use as wafers. The method may include the following steps: providing a workpiece for the separation of the layers of solid material with the workpiece optionally having at least one exposed surface, producing and/or providing a carrier unit for receiving at least one layer of solid material having the carrier unit optionally having a receiving layer for holding the layer of solid material, attaching the receiving layer to the exposed surface of the workpiece forming a composite structure, producing a break initiation point by means of pre-defined local stress induction in the peripheral region, including at the edge, of the workpiece, and separating the layer of solid material from the workpiece starting from the break initiation point.
    Type: Grant
    Filed: May 5, 2014
    Date of Patent: April 23, 2019
    Assignee: Siltectra, GmbH
    Inventors: Lukas Lichtensteiger, Wolfram Drescher
  • Publication number: 20190071552
    Abstract: A polymer hybrid material, a film comprising the polymer hybrid material, the use of the polymer hybrid material, a splitting method using the polymer hybrid material, and a method for producing the polymer hybrid material are provided for increasing the total yield, i.e. the efficiency with respect to the raw materials used and other resources such as energy and workforce, of a splitting method. The polymer hybrid material for use in a splitting method has at least two solid-body sections produced from a solid-body starting material. The polymer hybrid material comprises a polymer matrix and a first filler and a second filler embedded into the polymer matrix.
    Type: Application
    Filed: March 23, 2017
    Publication date: March 7, 2019
    Applicant: SILTECTRA GMBH
    Inventors: Christian BEYER, Jan RICHTER, Marko SWOBODA
  • Patent number: 10141219
    Abstract: A method for producing layers of solid material is contemplated.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: November 27, 2018
    Assignee: Siltectra GmbH
    Inventors: Wolfram Drescher, Jan Richter