EP3371824A1 - Procédé de liaison et de détachement de substrats - Google Patents

Procédé de liaison et de détachement de substrats

Info

Publication number
EP3371824A1
EP3371824A1 EP16790304.6A EP16790304A EP3371824A1 EP 3371824 A1 EP3371824 A1 EP 3371824A1 EP 16790304 A EP16790304 A EP 16790304A EP 3371824 A1 EP3371824 A1 EP 3371824A1
Authority
EP
European Patent Office
Prior art keywords
layer
release layer
substrate
electromagnetic radiation
bonding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP16790304.6A
Other languages
German (de)
English (en)
Inventor
Jürgen Burggraf
Harald Wiesbauer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EV Group E Thallner GmbH
Original Assignee
EV Group E Thallner GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by EV Group E Thallner GmbH filed Critical EV Group E Thallner GmbH
Publication of EP3371824A1 publication Critical patent/EP3371824A1/fr
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
    • H01L21/683—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping
    • H01L21/6835—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
    • H01L24/93—Batch processes
    • H01L24/94—Batch processes at wafer-level, i.e. with connecting carried out on a wafer comprising a plurality of undiced individual devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
    • H01L24/98—Methods for disconnecting semiconductor or solid-state bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/10—Removing layers, or parts of layers, mechanically or chemically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B43/00—Operations specially adapted for layered products and not otherwise provided for, e.g. repairing; Apparatus therefor
    • B32B43/006—Delaminating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • B32B7/023—Optical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/10—Interconnection of layers at least one layer having inter-reactive properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/045—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2221/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof covered by H01L21/00
    • H01L2221/67—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere
    • H01L2221/683—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping
    • H01L2221/68304—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support
    • H01L2221/68318—Auxiliary support including means facilitating the separation of a device or wafer from the auxiliary support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2221/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof covered by H01L21/00
    • H01L2221/67—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere
    • H01L2221/683—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping
    • H01L2221/68304—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support
    • H01L2221/68381—Details of chemical or physical process used for separating the auxiliary support from a device or wafer
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/98—Methods for disconnecting semiconductor or solid-state bodies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/11—Methods of delaminating, per se; i.e., separating at bonding face
    • Y10T156/1153—Temperature change for delamination [e.g., heating during delaminating, etc.]
    • Y10T156/1158—Electromagnetic radiation applied to work for delamination [e.g., microwave, uv, ir, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/19—Delaminating means
    • Y10T156/1911—Heating or cooling delaminating means [e.g., melting means, freezing means, etc.]
    • Y10T156/1917—Electromagnetic radiation delaminating means [e.g., microwave, uv, ir, etc.]

Definitions

  • the present invention relates to a method for bonding a product substrate with a bonding layer to a carrier substrate according to claim 1 and to a method for releasing a product substrate from a carrier substrate bonded to the product substrate with a bonding layer according to claim 2 and a product substrate / carrier substrate composite according to claim 9.
  • a first method for temporary bonding consists in a full-surface coating of a substrate.
  • the second substrate is replaced by a
  • a second method of temporary bonding is to treat specific surface areas of the carrier substrate in such a way that the
  • Adhesive effect between these surface areas and the applied bonding adhesive is minimal, in particular completely disappears. In addition to the specially treated surface areas, a very small, untreated surface area remains. In this highly adhesive
  • the carrier substrate is completely coated with the bonding adhesive after this special treatment. Thereafter, an ordinary bonding process is performed.
  • the debonding process is usually done chemically, by loosening the edge zone of the bonding adhesive and thus reducing the adhesive force between the bonding adhesive and the carrier substrate. The carrier substrate can then be easily lifted off the product substrate.
  • Another method of separating two substrates from each other is to apply a special release layer on a, in particular transparent, carrier substrate before the coating with the
  • Bonding adhesive takes place.
  • the transparency of the carrier substrate for a specific electromagnetic radiation allows unhindered access of the photons to the release layer.
  • the release layer is modified accordingly by the photons and reduces the adhesive force to
  • Bondingadhesivs from the carrier substrate and thus causes a separation of the carrier substrate from the product substrate. It is an object of the invention to provide a method and an apparatus with which an optimized sequence during bonding and
  • the invention is based on the idea to provide a method and a device with which a product substrate-carrier substrate composite can be produced in which a product substrate and a carrier substrate by means of a least predominantly for a
  • connection layer is connected, wherein between the connection layer and the connection layer
  • Electromagnetic radiation of a radiation source releasably formed release layer is arranged.
  • the invention can be implemented during bonding in particular by the following features / steps:
  • electromagnetic radiation of a radiation source is solvable
  • connection layer and the carrier substrate are each at least predominantly transparent to the electromagnetic radiation.
  • connection layer (4) and the carrier substrate (5) in each case
  • the invention can be implemented in particular by the following features:
  • electromagnetic radiation of a radiation source is solvable
  • connection layer (4) and the carrier substrate (5) in each case
  • a - in particular independent - core of the invention consists in particular in that a bonding adhesive (bonding layer) is used, which has a low absorption coefficient in the
  • Wavelength range of the electromagnetic radiation used, in particular laser has.
  • the absorption coefficient in this case in particular the linear absorption coefficient, is preferably normalized to the mass density.
  • Mass absorption coefficients of different materials can then be compared.
  • the mass absorption coefficients can be obtained from the NIST X-ray attenuation databases
  • Mass absorption coefficient ranges for some pure elements and some compounds, especially polymers.
  • Carbon is a major component of organic polymers. Even if the mass absorption coefficient of a pure component does not automatically affect the mass absorption coefficient of a
  • the invention also relates to a system and a method for debonding or dissolving two substrates by means of an electromagnetic photon source, in particular a laser.
  • the invention is based in particular on the idea that
  • Electromagnetic radiation is transmitted through the bonding adhesive to which both substrates are bonded together, particularly without heating them.
  • Bonding adhesive, electromagnetic radiation and release layer One advantage of the invention is, in particular, that the release layer can be applied to the product substrate.
  • the release layer is thus located between the product substrate and the bonding layer. If the irradiation of the release layer by the electromagnetic radiation, in particular the laser, leads to a lowering of the adhesion, the product substrate, in particular automatically, can be removed directly from the substrate
  • Bondingadhesive be separated.
  • the product substrate is therefore preferably freed from the bonding adhesive immediately after dissolution and does not first have to be chemically cleaned.
  • the release layer is preferably designed so that it is completely destroyed during the impairment according to the invention.
  • the electromagnetic radiation interacts with the electrons of matter.
  • the interaction is due to the fact that the alternating electromagnetic field can cause the electrically charged electrons to vibrate.
  • the positively charged core has a much larger mass and thus a greater inertia in relation to the electrons. The core movement is therefore mostly neglected.
  • An alternating electromagnetic field can, depending on its
  • the photons must have a certain frequency.
  • the generated new energy state can be degraded by emission of a photon of appropriate wavelength. This constant recording and delivery of photons and the so
  • Electromagnetic radiation in the microwave and infrared range mainly stimulates molecules to rotate.
  • Electromagnetic radiation in the infrared range preferably stimulates molecules to vibrate.
  • vibrations There are two types of vibration, the valence vibrations and the
  • the former cause two atoms of one molecule to vibrate along their axis of attachment, while the second mode vibrates between at least three atoms of a molecule, changing the bond angle.
  • the photons of electromagnetic radiation in the UV wavelength range already have such a high energy that they are able to lift individual electrons of a molecular assembly into higher molecular orbitals or the electrons even from the
  • Photon energies in particular from the X-ray wavelength range required.
  • the transmission is highest in the wavelength ranges in which no excitation of electrons from a highly occupied molecular orbital (HOMO) into a lowest occupied molecular orbital (LUMO) can occur.
  • HOMO highly occupied molecular orbital
  • LUMO lowest occupied molecular orbital
  • the most preferred is the bonding adhesive.
  • the molecular orbital theory thus already provides an indication of the permitted chemical structure of a bonding adhesive according to the invention.
  • Radiation sources in particular photon source
  • the source is thus, in particular predominantly predominantly, preferably exclusively, a photon source.
  • Photon source in particular at least predominantly, preferably completely, in one or more of the following wavelength ranges:
  • the following wavelength ranges are preferred: 1000 ⁇ to 10 nm, more preferably 780 nm to 100 nm, most preferably 370 nm to 200 nm. It would also be conceivable to use a source which can produce two different wavelength ranges. In this case, all the conditions according to the invention apply to each individual wave sound. Particularly preferred is the combination of UV light and IR light.
  • the IR light is mainly used for heating the release layer, the UV light mainly for breaking covalent compounds. In such a combination, the
  • Bonding adhesive according to the invention have a low absorption in both wavelength ranges.
  • coherent photon sources in particular microwave sources, preferably maser, or as coherent
  • Photon sources for visible, UV and X-ray trained laser are visible, UV and X-ray trained laser.
  • the photon sources can be in continuous operation or (preferably) in
  • Pulse mode are operated.
  • the pulse times are in particular less than 1 s, preferably less than 1 ms, more preferably less than 1 ⁇ s, most preferably less than 1 ns.
  • successive pulses are preferably greater than 1 ms, more preferably greater than 100 ms, most preferably greater than 1 s.
  • the wavelength of the photon source is chosen in particular such that the photon current, the connecting layer, in particular the
  • Bondingad Schmsiv at least predominantly, preferably completely, can radiate without suffering a significant loss by absorption.
  • the absorption of the photons by the tie layer is
  • the transmission of photons through the tie layer would be in particular greater than 50%, preferably greater than 75%, more preferably greater than 90%, most preferably greater than 99%, most preferably greater than 99.9%.
  • the absorbance values refer to the layer thickness selected based on the material property and the requirement for the product wafer.
  • connection layer and the photon source or the properties of the electromagnetic radiation are selected (in particular by suitable choice of material) and / or
  • the heating is less than 50 ° C, preferably less than 25 ° C, more preferably less than 10 ° C, most preferably less than 1 ° C, most preferably less than 0.1 ° C.
  • Heating can be largely excluded in particular by the fact that photon sources with electromagnetic
  • Wavelength ranges are used that stimulate neither the vibrational nor the rotational degrees of freedom of the molecules of the connecting layer.
  • a laser is described as a preferred embodiment of a radiation source according to the invention, in particular an electromagnetic photon source.
  • the abovementioned radiation sources can also be used.
  • a UV-VIS spectrum is a graph that uses the
  • the laser beam through the
  • Carrier substrate in the substrate stack (product substrate-carrier substrate composite) coupled so that the product substrate, especially in existing functional (metallic) units and / or elevated structures, at least predominantly can be intransparent for the wavelength of the laser.
  • the carrier substrate is therefore preferably selected from a material which weakens the intensity of the laser beam as little as possible.
  • the carrier substrate consists in particular predominantly, preferably completely, of one or more of the following materials:
  • the thickness of the carrier substrate is selected to be large enough to stabilize (in particular together with the connecting layer) of the product substrate.
  • the thickness of the carrier substrate is in particular greater than 100 ⁇ m, preferably greater than 500 ⁇ m, more preferably greater than 1000 ⁇ m, most preferably greater than 1500 ⁇ m, most preferably greater than 2000 ⁇ m.
  • the thickness is chosen to be as minimal as possible in order to minimize the intensity of the laser beam as little as possible.
  • the thickness of the carrier substrate is in particular less than 2000 .mu.m, preferably less than 1750 .mu.m, more preferably less than 1500 ⁇ , on
  • Bonding layer in particular bonding adhesive
  • bonding adhesive one or more of the following materials is chosen as the bonding adhesive:
  • inorganic polymers such as silicones have a relatively high transparency for a wide wavelength range of lasers which are preferred according to the invention as the radiation source and are therefore preferably used according to the invention as bonding adhesives.
  • the bonding adhesive is preferably applied by the following process steps:
  • Heat treatment is in particular above 50 ° C, preferably above 75 ° C, more preferably above 100 ° C, most preferably above 100 ° C, on most preferred over 150 ° C.
  • the temperature of the heat treatment is below 500 ° C.
  • the release layer can be made of any material which, under the action of the described electromagnetic radiation, leads to an adhesion reduction on at least one side, preferably the side facing the product substrate, of the release layer.
  • the release layer according to the invention is completely sublimated in particular under the action of electromagnetic radiation.
  • the release layer may be in a particular invention
  • Embodiment be formed as a laminated film.
  • the release layer according to the invention is preferably formed or applied as a molecular layer, in particular as a monolayer.
  • the layer thickness of the release layer according to the invention is less than 100 ⁇ m, preferably less than 50 ⁇ m, more preferably less than 10 ⁇ m, most preferably less than 500 nm, on
  • the physical and / or chemical properties of the release layer with respect to the electromagnetic radiation are selected in particular at least partially, preferably predominantly, more preferably completely, complementary to the corresponding physical and / or chemical properties of the connection layer and / or the carrier substrate (in particular by choice of material) and / or adjusted (in particular by setting parameters such as pressure, humidity, temperature).
  • the acting electromagnetic radiation is in particular at least predominantly, preferably completely, absorbed by the release layer according to the invention.
  • the absorption of electromagnetic radiation in particular
  • photons by the inventive release layer is greater than 50%, preferably greater than 75%, more preferably greater than 90%, most preferably greater than 99%, most preferably greater than 99.9%.
  • the transmission would be less than 50%, preferably less than 25%, more preferably less than 10%, most preferably less than 1%, most preferably less than 0.1%.
  • the absorption values are again related to the layer thickness selected on the basis of the material properties and the requirements of the product wafer.
  • Vibrational degrees of freedom are excited and / or electrons are transferred from a highly occupied molecular orbital into a lowest occupied molecular orbital.
  • the interaction takes place, in particular exclusively, in the UV-VIS spectrum. Therefore, in particular, there is a direct influence on the electronic structure and preferably no excitation of the degrees of rotation and / or oscillation degrees of freedom.
  • An excitation of the rotational and / or vibrational degrees of freedom would namely lead to a heating of the release layer according to the invention and thus also to a heating of the adjacent product substrate.
  • the material of the release layer and the electromagnetic radiation are chosen in particular so that the temperature increase of the release layer by the interaction with the electromagnetic radiation less than 50 ° C, preferably less than 25 ° C, still more preferably less than 10 ° C, most preferably less than 1 ° C, most preferably less than 0.1 ° C.
  • the heating can be precluded by using photon sources with electromagnetic wavelength ranges, which neither the vibration nor the
  • Moderate heating of the release layer may be desired according to the invention, as a result of the increased thermal movement
  • the heating is preferably at least 0.1 ° C, more preferably at least 1 ° C, even more preferably at least 5 ° C, even more preferably at least 10 ° C.
  • Particularly suitable release layers are the following materials: Polymers, in particular
  • Metals in particular Cu, Ag, Au, Al, Fe, Ni, Co, Pt. W, Cr,
  • Non-metallic glasses in particular organic, non-metallic glasses
  • release layers of polymers are preferably used.
  • the polymers are suitable as release layers in particular by their immense number of types of bonds, in particular sigma bonds, Pi- bonds, mesomeriestabiliserte Aromatenitatien (benzene rings). These bonds result in quite complicated UV-VIS spectra, with wavelength ranges in which there are too
  • the metals and metal alloys have absorption spectra of crystalline solids. Metals and metal alloys can
  • Ceramics and glasses have the lowest interaction effect. They are mostly amorphous or at least partially amorphous.
  • the release layer is preferably applied by the following process steps:
  • a first process step the application of the release layer is carried out by a spin coating process.
  • a second process step a heat treatment for the removal of any solvents. The temperature of the first process step
  • Heat treatment is in particular above 50 ° C, preferably above 75 ° C, more preferably above 100 ° C, most preferably above 100 ° C, most preferably above 150 ° C.
  • the temperature of the heat treatment is below 500 ° C.
  • a second heat treatment is carried out at higher temperatures to cure the release layer.
  • the temperature of the heat treatment is in particular above 100 ° C, preferably above 150 ° C, more preferably above 200 ° C, most preferably above 250 ° C, most preferably above 300 ° C.
  • Curing can also be effected by electromagnetic radiation, in particular by UV light,
  • the curing can also be effected by atmospheric moisture.
  • Substrate stack (product substrate-carrier substrate composite) from a product substrate, a release layer according to the invention, a bonding adhesive (bonding layer) and a carrier substrate applied to the product substrate, in particular over the whole area.
  • the surface of the product substrate does not have to be flat. It is conceivable that at the top of the product substrate are functional units with elevated structures, which are also coated.
  • the lacquering of the release layer according to the invention can be effected by a spin coating (preferred), a spray finish or by doctoring. If the release layer according to the invention is a film, then this becomes
  • Bonding adhesive may be either on the release layer according to the invention, therefore on the product substrate and / or on the carrier substrate
  • Bonding (contacting, especially under pressure) of both substrates with each other. Before the connection, an alignment process can take place.
  • Substrate stack (product substrate-carrier substrate composite) from a
  • Product substrate a centrally applied to the product substrate anti-adhesive layer and a peripherally applied inventive Release layer, a bonding adhesive (bonding layer) and a support substrate.
  • Concentric coating of the product substrate with an anti-adhesive layer can be done by a spin finish or a spray finish.
  • the non-stick layer is not applied over the entire surface.
  • the product substrate is masked in the region of the peripheral ring.
  • the coating of the peripheral ring of the product substrate with the release layer according to the invention takes place.
  • the lacquering of the release layer according to the invention can be carried out by a spin coating, a spray coating or by doctoring.
  • the release layer of the invention is a film, it is preferably laminated in the peripheral region. Also conceivable are a full-surface lamination and a removal of the central part of the film.
  • the bonding adhesive can either on the release layer according to the invention, therefore be applied to the product substrate and / or on the carrier substrate. in a fourth process step according to the invention, the
  • the influencing of the release layer of the substrate stack according to the invention can in particular also be effected with a system which is mentioned in the publication PCT / EP2015 / 050607.
  • Substrate stack of a product substrate, a bonding adhesive and a non-stick layer applied centrally on the carrier substrate and a peripherally applied release layer according to the invention.
  • This embodiment is an extension of the patent US20090218560A1.
  • the product substrate is preferably fixed on a film which has been mounted on a film frame.
  • the film frame and film stabilize the relatively thin product substrate after removal of the carrier substrate.
  • the carrier substrate is preferably only after the application of the
  • the Debondvorgang preferably takes place by a laser.
  • the laser acts on the release layer and thereby reduces the Adhesive strength / adhesion between the product substrate and the
  • Adhesive strength / Haftkrafi is in particular by more than 50%
  • debonding of a substrate stack according to the second and third embodiments of the invention can be carried out in particular with a system which is described in the document PCT / EP2015 / 050607.
  • the surface of the product substrate is preferably cleaned. Another important aspect of the invention is that complete removal of the release layer according to the first embodiment of the invention results in a product substrate having a relatively clean surface, which can be cleaned faster and therefore more cost effectively.
  • FIG. 1a is a schematic representation, not to scale, of a first embodiment of a product substrate / carrier substrate composite according to the invention
  • Figure lb is a schematic, not to scale representation of a
  • Figure 2a is a schematic, not to scale representation of a second embodiment of an inventive
  • Figure 2b is a schematic, not to scale representation of a
  • Figure 3 is a schematic, not to scale representation of a third embodiment of an inventive
  • All illustrated product substrates 2 may have functional units 6. However, product substrates would also be conceivable,
  • the functional units 6 may be, for example, microchips, memory components, MEMs components, etc. It would also be conceivable that the functional units 6 have increased structures 7, for example via solder balls. These raised structures 7 can be shaped differently and are correspondingly difficult and / or incomplete to coat with the release layer 3. When talking about a coating of the product substrate 2, it is so at the same time also meant the coating of functional units 6 and / or the elevated structures 7.
  • FIG. 1a shows a schematic, not to scale, first embodiment according to the invention of an embodiment according to the invention
  • Substrate stack 1 consisting of at least one product substrate 2, a release layer 3, a bonding adhesive as a bonding layer 4 and a support substrate 5. Above the topography of the provided
  • the release layer surface 3o adjoins the bonding adhesive, which in turn is connected to the carrier substrate 5.
  • FIG. 1b shows a schematic, not to scale representation of a debonding process according to the invention.
  • a laser 9 generates a laser beam 10, which penetrates via the carrier substrate 5 into the bonding adhesive.
  • the absorption of the bonding adhesive by an inventive adjustment of the wavelength of
  • Laser beam 10 minimal.
  • the laser beam 10 therefore penetrates the release layer 3, in particular with minimal, more preferably negligible, energy loss.
  • the interaction between the photons of the laser beam 10 and the release layer 3 is much higher than with the
  • the release layer 3 becomes
  • the laser 9 in particular scans the entire release layer surface 3o, in particular by a movement in the x and / or y direction.
  • FIG. 2a shows a schematic, not to scale, second embodiment according to the invention of an embodiment according to the invention
  • Substrate stack P consisting of at least one product substrate 2, one, only in the periphery of the product substrate second
  • release layer 3 coated, release layer 3, an anti-adhesion layer 8 applied centrally on the product substrate 2, a bonding layer 4 formed as a bonding adhesive, and a support substrate 5.
  • the adhesion between the release layer 8 and the bonding adhesive is
  • FIG. 2b shows the resolution of the release layer 3 of the second
  • the laser beam 10 is preferably concentrated only on the periphery of the substrate stack P.
  • the equipment is constructed so that the laser 9 is stationary while the substrate stack P rotates about a rotation axis R.
  • FIG. 3 shows a schematic, not to scale, third embodiment according to the invention of an embodiment according to the invention
  • Substrate stack 1 consisting of at least one product substrate 2, a bonding layer formed as bonding adhesive 4, one, applied exclusively in the periphery of the carrier substrate 5, Release layer 3, an anti-adhesion layer 8 applied centrally on the carrier substrate 5 and a carrier substrate 5.
  • the release layer 3 is applied to the periphery of the support substrate 5
  • the Debondvorgang takes place either by the structure of the embodiment according to the invention according to Figure 2b or by the system of the publication PCT / EP2015 / 050607.
  • FIG. 4 shows an absorption graph 1 1 in a section of an absorption spectrum of the bonding adhesive.
  • Absorption spectrum is in particular a UV-VIS absorption spectrum.
  • the absorption graph 1 1 preferably has at least one, in particular more than two, more preferably more than three, most preferably more than four, most preferably more than five local absorption minima 12.
  • Absorbance minimum 12 is part of an optimal absorption region 13, on whose wavelength range the wavelength of the laser beam 10 of the laser 9 to be used according to the invention is tuned.
  • the bonding adhesive used is chosen so that the wavelength of the laser beam 10 used is within the optimum absorption region 13, preferably exactly with the
  • 5 shows an absorption graph 1 1 'in a section of an absorption spectrum of the release layer 3.
  • the absorption spectrum is in particular a UV-VIS absorption spectrum.
  • the absorption graph 1 1 ' preferably has at least one, in particular more than two, more preferably more than three, most preferably more than four, most preferably more than five local absorption maxima 14. For the sake of clarity, only two local absorption maxima 14 are shown in the absorption graph I i ,
  • the local absorption maximum 14 is part of an optimal
  • Wavelength of the invention to be used laser beam 10 of the laser 9 should be tuned.
  • the release layer 3 used is chosen so that the wavelength of the used
  • Laser beam 10 is within the optimum absorption region 13 ', preferably exactly matches the absorption maximum 14. As a result, a maximum absorption according to the invention is ensured by the release layer 3 for the laser beam 10.
  • the laser beam 10 reaches the release layer 3 to any appreciable extent. As far as the wavelength of the laser beam 10, the
  • BondingadPSivs 4 and the release layer 3 can not be optimally matched to each other, is preferably such that at least the wavelength of the laser beam 10 is tuned to one or more absorption minima of BondingadPSivs to the photons of the laser beam 10 at least as unhindered access to the release layer 3 enable.

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  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Laminated Bodies (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Combinations Of Printed Boards (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Recrystallisation Techniques (AREA)

Abstract

L'invention concerne un procédé pour lier un substrat de produit (2) à une couche de liaison (4) sur un substrat porteur (5), ainsi qu'un procédé pour détacher le substrat de produit du substrat porteur. Une couche de détachement (3) est appliquée entre la couche de liaison (4) et le substrat de produit (2), et • a) la couche de détachement (3) peut être détachée par interaction avec un rayonnement électromagnétique d'une source de rayonnement, et • b) la couche de liaison (4) et le substrat porteur (5) sont respectivement au moins majoritairement transparents pour le rayonnement électromagnétique. La présente invention concerne en outre une liaison substrat de produit - substrat porteur correspondante.
EP16790304.6A 2015-11-02 2016-10-24 Procédé de liaison et de détachement de substrats Ceased EP3371824A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015118742.6A DE102015118742A1 (de) 2015-11-02 2015-11-02 Verfahren zum Bonden und Lösen von Substraten
PCT/EP2016/075571 WO2017076682A1 (fr) 2015-11-02 2016-10-24 Procédé de liaison et de détachement de substrats

Publications (1)

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EP3371824A1 true EP3371824A1 (fr) 2018-09-12

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EP (1) EP3371824A1 (fr)
JP (3) JP7193339B2 (fr)
KR (2) KR102653627B1 (fr)
CN (1) CN108352351B (fr)
DE (1) DE102015118742A1 (fr)
SG (1) SG11201802663UA (fr)
TW (3) TWI844173B (fr)
WO (1) WO2017076682A1 (fr)

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US20220002591A1 (en) * 2018-11-16 2022-01-06 Nissan Chemical Corporation Laminate peeling method, laminate, and laminate production method
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TW202401529A (zh) 2024-01-01
WO2017076682A1 (fr) 2017-05-11
US20200013663A1 (en) 2020-01-09
JP2023027211A (ja) 2023-03-01
JP2019501790A (ja) 2019-01-24
TWI797064B (zh) 2023-04-01
US10468286B2 (en) 2019-11-05
KR102653627B1 (ko) 2024-04-01
CN108352351B (zh) 2023-03-31
KR20240046616A (ko) 2024-04-09
KR20180075477A (ko) 2018-07-04
DE102015118742A1 (de) 2017-05-04
JP7193339B2 (ja) 2022-12-20
US20180233394A1 (en) 2018-08-16
JP2024084824A (ja) 2024-06-25
CN108352351A (zh) 2018-07-31
US11024530B2 (en) 2021-06-01
TWI844173B (zh) 2024-06-01
TW201727713A (zh) 2017-08-01
JP7469444B2 (ja) 2024-04-16
SG11201802663UA (en) 2018-04-27
TW202320140A (zh) 2023-05-16

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