WO2020225304A1 - Verfahren zur herstellung eines bauelements und bauelement - Google Patents
Verfahren zur herstellung eines bauelements und bauelement Download PDFInfo
- Publication number
- WO2020225304A1 WO2020225304A1 PCT/EP2020/062585 EP2020062585W WO2020225304A1 WO 2020225304 A1 WO2020225304 A1 WO 2020225304A1 EP 2020062585 W EP2020062585 W EP 2020062585W WO 2020225304 A1 WO2020225304 A1 WO 2020225304A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- layer
- component
- connection
- contact
- carrier
- 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
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Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
- H10H20/84—Coatings, e.g. passivation layers or antireflective coatings
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F71/00—Manufacture or treatment of devices covered by this subclass
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F77/00—Constructional details of devices covered by this subclass
- H10F77/93—Interconnections
- H10F77/933—Interconnections for devices having potential barriers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/01—Manufacture or treatment
- H10H20/011—Manufacture or treatment of bodies, e.g. forming semiconductor layers
- H10H20/018—Bonding of wafers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
- H10H20/85—Packages
- H10H20/857—Interconnections, e.g. lead-frames, bond wires or solder balls
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W90/00—Package configurations
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/01—Manufacture or treatment
- H10H20/034—Manufacture or treatment of coatings
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/01—Manufacture or treatment
- H10H20/036—Manufacture or treatment of packages
- H10H20/0364—Manufacture or treatment of packages of interconnections
Definitions
- a method for producing a component is specified.
- a component is also specified.
- the joining plane is quite demanding if, for example, an adhesive layer with a layer thickness of less than 5 gm, less than 3 gm, less than 1 gm or less than 0.2 gm is to be used, since the adhesive layer is so thin
- Layer thickness mostly electrically conductive fillers are missing. However, if the adhesive layer has electrically conductive fillers, the adhesive layer often has much larger ones
- One object is to specify a reliable and cost-effective method for manufacturing a component. Another object is to provide a component with a reliable electrical connection and a stable mechanical connection between a carrier and a
- a method for producing a component with a carrier and at least one component is specified, the component being connected to the carrier in an electrically conductive manner and in particular by means of an electrically insulating one
- Connection layer is mechanically attached to the carrier.
- the adhesive layer is free from an electrically conductive material, for example free from electrically conductive fillers.
- the adhesive layer is not set up to produce an electrical connection.
- the mechanical connection is preferably made spatially
- the component has several components that are mechanically fixed on the common carrier and with it
- a carrier is generally understood to be a receiver structure that mechanically supports the component or a plurality of components.
- the receiver structure can have electrical circuits, transistors, electrical conductor tracks or other electrical components that are set up in particular for electrical contacting and for controlling the component or components.
- the carrier is to
- a receiver carrier for example a semiconductor substrate, a Si wafer, possibly with through-contacts, a printed circuit board with electrical conductor tracks or a receiver with integrated circuits, transistors and / or other switching elements.
- the receiver structure is part of an electronic device or a light source.
- the components can be used as detectors or light sources in the
- the carrier is provided with a connection layer.
- Connection layer can be arranged on the carrier, in particular on a main body of the carrier.
- the connecting layer can be an adhesive layer.
- the connection layer has at least one opening in which a connection surface of the connection layer is exposed.
- the opening can have any shape, for example the shape of a circle, a square or the shape of an ellipse.
- the connecting layer in the vicinity of the opening has the shape of a closed or open frame. It is possible that the
- Connection layer has a plurality of openings, in each of which a connection surface of the connection layer is exposed. In the vertical direction, the connection layer can over the exposed connection surface or over the
- Connection layer protrude, approximately in the direction away from the main body of the carrier. However, it is also the other way around
- connection layer protrudes, roughly in the direction away from that Main body of the wearer.
- the connection layer can be any connection layer.
- Connection layer have subregions which are laterally spaced from one another.
- connection layer is in particular part of a
- connection layer can be made coherent or have a plurality of spatially separate sublayers.
- Connection layer can be a connection column or several
- Connection surface is formed approximately by an exposed surface of the associated connection column.
- the connection surface is in particular a metal surface.
- a vertical direction is generally understood to mean a direction which is directed perpendicular to a main extension surface of the carrier, in particular the main body of the carrier.
- a lateral direction is understood to mean a direction which runs in particular parallel to the main extension surface of the carrier.
- the vertical direction and the lateral direction are transverse, approximately orthogonal to one another.
- the component with a contact layer is attached to the carrier in such a way that a
- the exposed contact area is about one
- the contact layer is in particular part of a wiring structure that is used for
- the contact layer can have a plurality of laterally spaced apart openings or depressions. If the exposed connection surface or the connection pillar or the connection layer protrudes beyond the connection layer, it is possible that the exposed connection area or the connection pillar or the connection layer can be inserted into one or more openings or depressions in places
- Connection layer spatially spaced from the contact layer, so that an electrical connection between the
- Connection layer and the contact layer is not yet made.
- the connecting layer is in particular directly adjacent to the component and directly to the carrier.
- the exposed contact surface of the contact layer is spaced apart from the exposed connection surface of the connection layer, in particular by a vertical distance. In other words, it borders the exposed
- connection surface on, but is spatially separated from the connection surface by an interspace, wherein the interspace can be filled with a gaseous medium, for example with air. Protrudes the exposed pad or the
- Connection layer for example the connection pillar in the lateral
- connection layer or the connection column can be spatially separated from the contact layer by a lateral interspace, wherein the lateral interspace can be filled with a gaseous medium, for example with air.
- the reduction in the vertical distance can be achieved by changing the volume, for example
- the volume of the connecting layer is shrunk in a tempering process, for example in an oven.
- the connecting layer can be converted, for example, from a viscous, soft or pasty state to a solid state.
- the proportions of liquid, such as connecting agents can be reduced in the connecting layer, which means that the
- Link layer can be reduced.
- the heating can also cause a crosslinking reaction within the
- Connection layer are introduced, whereby the volume of the connection layer is reduced.
- the reduction of the vertical distance or the volume of the connecting layer can alternatively or additionally be mechanically supported, for example by the action of external forces.
- the connecting layer can be subjected to external forces,
- the vertical distance is determined by the
- connection area forms, for example, an interface between the respective component and the carrier that is less than 75%, preferably less than 50%, less than 25% or less than 10% of the
- the interface is in particular free of a material of the connecting layer or free of traces of a material of the connecting layer.
- the interface can be a pure metal-metal surface, a pure metal TCO surface and / or a pure TCO-TCO surface (TCO: transparent conductive oxide,
- the component has a semiconductor body with an optically active zone which is used for generation or for detection
- the component is, for example, a light-emitting diode.
- Semiconductor body can have a first semiconductor layer of a first charge carrier type and a second semiconductor layer of a second charge carrier type.
- the semiconductor layer and the second semiconductor layer can be designed to be n-conductive or p-conductive, or vice versa.
- the active zone is arranged in particular between the first semiconductor layer and the second semiconductor layer.
- the active zone is a pn junction zone.
- the component is a micro-component, such as a pLED.
- the component has a lateral extent which is, for example, between 1 ⁇ m and 1 mm inclusive, approximately between 10 ⁇ m and 1 mm inclusive, between 50 ⁇ m and 1 mm inclusive or between 1 and inclusive mpi and 30 mpi, between 10 mpi and 100 mpi inclusive or between 30 mpi and 300 mpi inclusive.
- the carrier can be designed to be n-conductive or p-conductive, or vice versa.
- the active zone is arranged in particular between the first semiconductor layer and the second semiconductor layer.
- the active zone is a pn junction zone.
- the component is a micro-component, such as a pLED.
- the component has
- Connection layer is mechanically fastened on the carrier, a carrier with a connection layer is provided.
- connection layer is arranged on the carrier and has at least one opening in which a connection surface of the connection layer is exposed.
- the connecting layer protrudes in the vertical direction over the
- the component with a contact layer is attached to the carrier in such a way that, in a plan view of the carrier, an exposed contact surface of the contact layer has the opening and the one located therein
- connection layer is arranged on the carrier and has at least one opening in which a connection surface of the connection layer is exposed.
- the connecting layer protrudes in the vertical direction over the
- connection surface or vice versa means in particular that the exposed connection surface of the connection layer or the connection layer or the connection column in the vertical direction over the
- Connecting layer protrudes, approximately in the vertical direction away from the carrier or from the main body of the carrier.
- the component with a contact layer is attached to the carrier in such a way that, in a plan view of the carrier, an exposed contact surface of the contact layer is the
- the exposed contact surface being spaced apart from the exposed connection surface by a vertical distance. Then the vertical distance is through
- volume change of the connecting layer is reduced, thereby reducing the exposed contact area and the exposed
- Connection surface are brought together in such a way that they directly adjoin one another and a direct
- a reliable mechanical connection between the component and the carrier is thus ensured by the electrically insulating connection layer.
- the electrical connection between the component and the carrier is made by the
- connection layer By reducing the volume of the connection layer, the contact surface and the connection surface are not only
- connection layer and the contact layer form a solder system.
- the mechanical adhesion between the connection layer and the contact layer can, however, be less than that caused directly by the connection layer
- Adhesion between the component and the carrier Adhesion between the component and the carrier.
- connection layer also does not contain any electrically conductive fillers, the connecting layer can be made particularly thin. On expensive fillers like gold,
- connection layer also has at least one opening or a plurality of openings for the electrical connection of the component or components to the carrier, the connection layer does not have to be broken through by random or planned topography steps.
- the formation of the opening or the openings can namely be carried out in a separate process before the component is attached, so that the dimensions of the openings and the distances between the openings can be designed in a targeted manner depending on the application of the desired components.
- the connecting layer is directly adjacent to the component and directly to the carrier.
- the connecting layer has a before the change in volume
- Layer thickness of the connecting layer or by shrinking the volume of the connecting layer can take place.
- Connection layer preferably swollen for a short time to increase the adhesiveness.
- the adhesive layer can be created by storing the carrier with the connecting layer arranged on it in a solvent atmosphere. This increases the tackiness of the connecting layer and thus contributes to increasing the mechanical strength between the carrier and the component. Since the
- connection layer is briefly swollen, the volume of the connection layer also increases for a short time, whereby the volume of the connection layer is stronger
- connection layer is before the
- connection layer has, before the change in volume, in a
- connection layer Surrounding the contact layer a vertical layer thickness with a constant height. After the change in volume, the connection layer has the same area around the contact layer a reduced vertical layer thickness, in particular with locally different heights.
- the layer thickness of the connecting layer can be in an overlap area
- connection layer with the component must be larger than in a region of the connection layer without overlapping with the
- the layer thickness in an overlap area of the connecting layer with the contact layer can be greater than in an area of the
- Connection layer without overlapping with the contact layer.
- connection layer has a surface facing the component, which surface is designed in a step-like manner in particular due to the locally different heights of the connection layer.
- the connecting layer has a partial surface that directly adjoins the component and a
- the connecting layer therefore does not protrude beyond the component in the vertical direction away from the carrier.
- the component for example a main body of the
- connection layer adjoins both the contact layer and the main body of the component or the contact layer protrudes into the opening of the connection layer, the contact layer can be laterally enclosed by the connection layer at least in some areas. It is possible that the contact layer has one or more contact pillars
- the connecting layer has a photo-structurable material or is formed from this.
- connection layer can consist of a
- the link layer can in this case
- the opening or the plurality of openings can through
- Photo structuring of the connecting layer that is, by photolithography, are formed.
- the exposed connection surface is through an exposed
- connection column formed.
- the connection pillar is arranged in particular in the opening in the connecting layer. Before the change in volume of the connecting layer, the connecting column can be laterally spaced apart from the latter and after the volume change in the connecting layer can remain laterally spaced from the latter.
- the exposed contact area is formed by an exposed surface of a contact pillar.
- the contact column can be in front of the volume change
- Connecting layer be laterally spaced from this and remain laterally spaced from this after the change in volume of the connecting layer.
- connection column and the associated contact column in particular delimit directly to each other.
- connection column and the contact column form a via that extends along the vertical direction through the
- Connecting layer extends therethrough. Since the contact column and the connection column have different cross-sections
- the via may have, a surface of the via at a transition zone between the contact column and the
- Connection column have the shape of a step.
- the via can be spaced apart from the connecting layer, for example by an intermediate region.
- the intermediate area can be filled with a gaseous medium, such as air.
- the component can have a plurality of such vias, wherein the component or the components is / are electrically conductively connected to the carrier via the vias.
- a through contact it is possible for such a through contact to be formed exclusively by the connection column or exclusively by the contact column.
- connection layer or the connection column protrudes into a recess or opening in the contact layer in regions.
- connection layer for example the connection pillar, can be partially or completely removed from the
- the contact layer is / are in particular formed by the bottom surface or by the bottom surfaces of the recesses or the openings of the contact layer. This configuration of the connection layer and the contact layer can also be demonstrated on the finished component.
- each component has a contact layer with at least one contact surface.
- the connecting layer has several openings, in each of which one
- connection surface of the connection layer is freely accessible.
- the components are in a common
- Connection layer electrically connected to the carrier.
- this has a carrier, at least one component and a
- the component is mechanically attached to the carrier by means of the electrically insulating connecting layer.
- the carrier has a connection layer with a connection surface, the connection layer being arranged on the carrier and
- connection surface of the connection layer is located.
- the component has a contact layer with a contact surface, with the contact surface, the opening of the connecting layer and the opening therein, in a plan view of the carrier
- connection surface of the connection layer covered.
- the contact area and the connection area directly adjoin one another, as a result of which a direct electrical contact is formed between the contact layer and the connection layer and as a result of which the component is connected in an electrically conductive manner to the carrier.
- the electrical connection and the mechanical connection between the component and the carrier are in particular spatially separated.
- the electrically insulating connecting layer By means of the electrically insulating connecting layer, the component is attached to the
- the connecting layer which is an adhesive layer, for example, can be structured in this way be that no material of the tie layer in the
- the layer thickness and the composition of the connecting layer can be selected in this case such that after the expulsion of the
- connection layer is in particular free of electrically conductive fillers, the connecting layer can be made particularly thin. The local separation of the mechanical fixation from the electrical connection also reduces the
- an interface between the contact layer and the contact layer is provided.
- Connection layer formed by an overlap area between the contact area and the connection area.
- the interface is in particular free of a material of the connecting layer or free of traces of a material of the connecting layer.
- the connecting layer extends exclusively in a vertical area which extends along the vertical
- the main body of the component can also be free from a lateral enclosure by the connecting layer. In other words, it extends Connection layer in particular not up to the vertical height of the component. It is possible that the
- Connection layer does not have a single sub-area which protrudes in the direction away from the carrier over the contact layer of the component. Seen globally, the
- Connection layer thus in particular exclusively at a vertical height between the carrier and the component, for example between the carrier and the main body of the component.
- side surfaces of the component are not or at most partially covered by the connection layer or laterally enclosed on the side surfaces of the contact layer.
- the connecting layer has a surface facing away from the carrier in an overlapping region with the component, which surface directly adjoins the component and marks the highest vertical elevation of the connecting layer from the carrier.
- connection layer has a first partial area and a second partial area directly adjoining the first partial area in a plan view of the carrier.
- the first sub-area has a first surface facing away from the carrier, which in particular directly adjoins the component and from the
- the second partial area has a second surface which faces away from the carrier and which, for example, does not adjoin the component.
- the distance between the first surface and a main body of the carrier is in particular greater than a vertical one
- the first sub-area has a larger one
- first partial area has a lower material density than the second partial area.
- first sub-area and the second sub-area can be formed from the same material.
- the connecting layer has a layer thickness between
- the connecting layer is a thin one
- Adhesion promoter layer Adhesion promoter layer.
- the component is connected in an electrically conductive manner to the carrier via a through contact.
- the via has at least a partial area of the contact area and at least a partial area of the connection area, the via extending through the connecting layer along the vertical direction. These subregions are, in particular, inner or outer surfaces of the via.
- the through contact is spaced apart from the connecting layer in the lateral direction, in particular by an intermediate region.
- the intermediate area is a cavity filled with a gaseous medium.
- the contact area of the contact layer only covers the opening and the connection area in plan view
- the component or components can be arranged offset on the connection layer in such a way that the Component or components each have one of the openings
- connection column only partially covered / covered. It is thus possible for the connection column to be only partially covered by the associated contact column in plan view, or vice versa. The contact areas of the component or components are thus deliberately shifted laterally.
- the contact between the contact layer and the connection layer is remelted
- solder contact connection The connection layer and / or the
- Contact layer can / can contain a solder material, in particular formed from a solder material or coated with a solder material.
- Figures 1A, 1B, IC, ID, IE and 1F are schematic representations of some method steps of a method for producing a component
- Figures 2A, 2B, 2C and 2D schematic representations of some further method steps of a method for producing a component, Figures 3A, 3B, 3C, 3D, 4A, 4B, 4C, 4D, 5A, 5B, 5C, 5D, 6A,
- 6B, 6C, 6D, 7A, 7B, 7C, 7D, 8A, 8B, 8C, 8D, 9A, 9B, 9C and 9D are schematic representations of various method steps of further exemplary embodiments of a method for
- Figures 10A, 10B and IOC are schematic representations of some
- FIGS. 11A, 11B and 11C show schematic representations of further method steps of a further exemplary embodiment of a method for producing a component.
- a method step for manufacturing a component 10 is shown schematically in FIG. 1A.
- a carrier 1 is provided, for example, a main body 1H
- connection layer IS is arranged on the main body 1H.
- the connection layer IS can be a structured layer with a plurality of connection pillars IC.
- the connection pillars IC each have a surface 1F facing away from the main body 1H, the surface 1F forming a connection area 1F and being freely accessible as shown in FIG. 1A.
- the exposed connection surfaces 1F shown in FIG. 1A are in particular
- connection pads of the carrier 1 Metal surfaces that form so-called connection pads of the carrier 1. Notwithstanding the figure 1A, the carrier 1 can depending on
- connection layer 3 is applied to the carrier 1.
- the connection pillars IC with the exposed connection surfaces 1F are covered with a material of the connection layer 3, for example an insulating adhesive, for example by spin-coating or by a so-called spin-on method.
- the connection layer 3 initially completely covers the connection pillars IC and the connection surfaces 1F.
- connection layer 3 can initially directly adjoin the connection pillars IC and the connection areas 1F. After applying the
- the connecting layer 3 on the carrier 1 has a vertical layer thickness 3D.
- Connection layer 3 for exposing the connection pillars IC or the connection surfaces 1F generated.
- the connecting pillars IC are exposed in such a way that the connecting pillars IC are each laterally spaced apart from the connecting layer 3 by an intermediate region Z.
- the connecting layer 3 protrudes in the vertical direction away from the main body 1H over the connection surfaces 1F.
- the connecting layer 3 preferably contains photoactive, in particular photo-structurable components, so that the connecting layer 3 is used to produce the opening or the Openings 3R can be photo-structured.
- Connection layer 3 can contain a photoresist
- Adhesives are mixed in.
- material of the connecting layer 3 it is possible for material of the connecting layer 3 to be removed mechanically or chemically in order to produce the opening or openings 3R.
- the connection areas 1F are exposed, the vertical layer thickness 3D of the connection layer 3 remains
- Baking steps are particularly desirable for partially driving off solvent components. It is also possible that in addition to the openings 3R, areas of the
- Connection layer 3 which are not provided for later occupation by components, are released.
- a surrounding frame is formed from the connection layer 3 around the associated connection area 1F.
- the surrounding frame is preferably made continuous, but can also be made interrupted.
- the carrier 1 has a main extension surface or a receiver surface which is, for example, planar in particular by a surface facing the connection layer IS
- the connecting layer 3 can have an exposed adhesive surface, the adhesive surface preferably running plane-parallel to the receiver surface of the carrier 1.
- the adhesive surface is due to exposed surfaces
- Connection layer 3 is formed.
- the adhesive surface can be any material
- the adhesive surface or the entire adhesive surface is preferably flat.
- the presented adhesive surface of the connection layer 3 is increased vertically relative to the connection surfaces 1F, in particular increased by a vertical distance D. If a component 1 is arranged on the adhesive surface and the component 1 does not extend into the opening 3R of the connecting layer 3, the component 1 can initially be spatially spaced apart from the connection surface 1F by the vertical distance D (FIG. IE).
- a component 2 or a component composite 20 composed of several components 2 is placed on the connecting layer 3
- a component becomes 2 or a
- a plurality of components 2 are applied to the connecting layer 3 with the aid of an adhering stamp 20H.
- the stamp 20H can be subsequently removed before or after the component 2 or the plurality of components 2 by means of the
- Connection layer 3 is permanently fixed on the carrier 1. It is possible for the component assembly 20 to have a plurality of components 2 and a common substrate 20H, the components
- the substrate 20H can be a growth substrate on which the main bodies 2H of the components 2 are grown epitaxially. After the components 2 have been mechanically fixed on the carrier 1, the substrate 20H can remain on the component 2 or on the components 2 or can be removed from the components 2.
- each component 2 has a main body 2H, which can be a semiconductor body, and a contact layer 2S, the component 2 in this way on the connecting layer
- connection layer IS facing the carrier 1.
- Contact layer 2S of component 2 can be designed in the form of a single contact pillar 2C. It is also possible for the contact layer 2S to have at least two or exactly two Has contact pillars 2C which, for example, are assigned to different electrical polarities of the component 2 and are provided for making electrical contact with the component 2.
- the main body 2H can completely cover the contact layer 2S.
- the contact layer 2S or the contact column 2C has in particular an exposed and thus freely accessible contact surface 2F.
- the contact layer 2S or the contact surface 2F is located on a rear side of the component 2, that is to say on a side of the component 2 facing the carrier 1.
- the component 2 or a plurality of components 2 is placed on the adhesive surface of the connecting layer 3.
- the connecting layer 3 is approximately
- the component 2 has side surfaces 4, which in particular consist of side surfaces 4H of the main body 2H and 2H
- Connection layer 3 are free from a covering or free from a lateral enclosure by the connection layer 3.
- the connecting layer 3 does not have a single partial area which extends along the vertical direction from the carrier 1 via the contact layer 2 to the side surfaces 4H of the main body 2H or beyond. Which extends along the vertical direction
- Extending side surfaces 4, 4S and 4H can thus be free from being covered by the material of the connecting layer 3.
- the component 2 covers in plan view of the
- the components 2 are aligned on the connecting layer 3 in such a way that the contact surface 2F of the respective component 2 overlaps with a connection surface 1F of the carrier 1 in a plan view of the carrier 1.
- the contact area 2F is spatially separated from the connection area 1F by a vertical distance D along the vertical direction. In other words, there is a gap between the conductive structures on the underside of the components 2 and the conductive structures on the top of the carrier 1.
- Connection layer 3 are the components 2 on the
- Connecting layer 3 is temporarily mechanically connected to the carrier 1. However, the components 2 are not yet electrically conductively connected to the carrier 1.
- a through-contact 12 is thereby formed, which extends through the connecting layer 3 and electrically connects the component 2 to the carrier 1.
- the via 12 is formed exclusively by the connection column IC.
- the volume or the layer thickness 3D of the connecting layer 3 is shrunk.
- the shrinkage of the connecting layer 3 is shrunk.
- Link layer 3 is for example by a
- the layer thickness 3D is expediently at least by vertical distance D between the contact surface 2F and the connection surface 1F reduced or shrunk.
- the connecting layer 3 After the change in volume of the connecting layer 3, it has at least a first partial area 31 which, in a plan view of the carrier 1, is completely covered by the associated component 2, in particular by the main body 2H and / or by the contact layer 2S of the associated component 2.
- the first sub-area 31 is in particular that area of
- Connection layer 3 which, seen in plan view, is directly attached to the carrier 1 as well as directly to the
- the first sub-area 31 has a
- the opening 3R is enclosed in the lateral directions by such a partial area 31, in particular completely enclosed.
- the connecting layer 3 After the change in volume of the connecting layer 3, it has at least one second sub-area 32 which, in a plan view of the carrier 1, is at least partially or completely free from being covered by the component 2 or by all components 2 or at least free from being covered by the
- Contact layer (s) is 2S.
- the second sub-area 32 in particular directly adjoins the first sub-area 31.
- the second sub-area 32 is approximately
- the second is located in a plan view of the carrier 1
- Partial area 32 at least in some areas, to the side of component 2 or components 2. However, it is possible that second partial area 32 is partially or completely covered by component 2 (FIG. 2A). However, the second partial area 32 does not directly adjoin the component 2 and can be spaced apart from the component 2, in particular from the main body 2H of the component 2, by a vertical distance.
- the first partial area 31 is partially or completely enclosed in the lateral directions by the second partial area 32.
- the second sub-area 32 has a surface 32F which faces away from the carrier 1 and which, compared with the surface 31F of the first sub-area 31, is somewhat retracted in the direction of the carrier 1.
- the surface 31F of the first sub-area 31 projects along the vertical direction beyond the surface 32F of the second sub-area 32.
- the surfaces 31F and 32F thus form two vertically offset terraces of a step on the total surface of the connecting layer 3, the higher terrace directly adjoining the component 2 and the lower terrace being vertically spaced from the component 2 or at least from the main body 2H of the component 2 .
- the first partial area 31 has a first layer thickness 31D and the second partial area 32 has a second layer thickness 32D.
- the second layer thickness 32D is smaller than the first layer thickness 31D.
- Both the first layer thickness 31D and the second layer thickness 32D are smaller than the original layer thickness 3D of the connecting layer 3.
- the difference between the original layer thickness 3D and the first layer thickness 31D or the second layer thickness 32D is approximately at least as large or greater than the original vertical distance D between the connection surface 1F and the contact surface 2F.
- the original vertical distance D is shown schematically in FIG. IE, for example.
- Connection surface 1F is no longer shrunk as much as the second sub-area 32, which is not directly attached to the
- Component 2 is adjacent and is therefore not directly wetted with component 2. It is therefore possible that the first sub-area
- connection between two metal surfaces namely between the contact surface 2F and the connection surface 1F, is formed by the change in volume of an in particular electrically non-conductive connection layer 3.
- Figures IE and 1F Further characteristic features of such a method can be seen in Figures IE and 1F, in which it is shown schematically that the via 12 or the connection column IC already before and in particular also after the change in volume of the connecting layer 3 by a
- Intermediate region Z is laterally spaced from the connecting layer 3.
- the intermediate region Z is in particular one filled with a gaseous medium, for example with air
- the through-contact 12 can be completely surrounded by the intermediate region Z in the lateral directions.
- Connecting layer 3 have a plurality of openings 3R, the components 2 each being arranged on one of the openings 3R and being electrically connected to the carrier 1 by means of at least one through contact 12 arranged in the associated opening 3R.
- the connecting layer 3 can optionally be in the second partial areas 32 to the side of the components 2
- the connecting layer 3 is in a plurality of
- each of the Partial layers can be assigned one-to-one to one of the components 2.
- the component 2 can partially or completely cover the partial layer of the connecting layer 3 assigned to it.
- Each of the partial layers of the connecting layer 3 can have a first partial area 31 with the layer thickness 31D and the surface 31F and a second partial area 32 with the layer thickness 32D and the surface 32F.
- encapsulation, passivation and / or further contact layers can be produced. Is the
- the encapsulation or passivation of the individual components 2 can be simplified and
- Decoupling structures or further optical components for beam shaping can also be produced or placed on the main bodies 2H, for example.
- the contact layer 2S on the rear side of the component 2 forms a first electrical contact point 61, for example.
- the front of the component 2 forms in particular a second electrical contact point 62 of the component 2. Via the first electrical contact point 61 and the second electrical contact point Contact point 62, the component 2 can be electrically external
- the main body 1H of the carrier 1 can have vias which extend through the main body 1H, so that the vias 12 can be electrically contacted via these vias on a rear side of the carrier 1.
- the exemplary embodiment of a method step shown in FIG. 2C essentially corresponds to the exemplary embodiment shown in FIG. IC.
- areas of the connecting layer 3 that are not provided for later occupation by components 2 are exposed.
- the connecting layer 3 can thus already be divided into a plurality of separate partial layers before the components 2 are arranged.
- Each of the partial layers can have an opening 3R and is provided for receiving one of the components 2, for example.
- the components 2 are arranged on the openings 3R of the connecting layer 3.
- a component 10 can be produced, which is shown, for example, in FIG. 2A or 2B.
- Embodiments essentially correspond to those shown in Figures ID, IE, 1F and 2A
- the contact layer 2S of the respective component 2 is designed in the form of a contact pillar 2C, the dimension of
- Contact column 2C is chosen such that it protrudes into opening 3R when component 2 is placed on connecting layer 3.
- the contact layer 2S therefore does not border directly to the connecting layer 3 but is laterally spaced from it.
- the main body 2H of the component 2 directly adjoins the connecting layer 3.
- the contact layer 2S in particular the contact pillar 2C, is enclosed by the connecting layer 3 in lateral directions. It is possible for the contact layer 2S to be completely within the opening 3R.
- FIG. 3B shows that the contact area 2F is smaller than the connection area 1F.
- a through contact 12 is made from the contact pillar 2C and from the
- the through-contact 12 can be formed in the form of a column with abruptly changing cross-sections.
- the through contact 12 has side faces which have the shape of a step in some areas, a step transition being located at a boundary area between the contact column 2C and the connection column IC.
- the via 12 consistently made of the same material or in different partial areas made of different materials.
- the component 2 can be a partial layer of the
- Cover connection layer 3 partially or completely. If the component 2 completely covers the partial layer, the partial layer is in particular formed exclusively by the first partial area 31 of the connecting layer 3. If the component 2 partially covers the sub-layer, the sub-layer can have a first sub-area 31 and a second
- Partial region 32 of the connecting layer 3 can be formed, the first partial layer 31 being completely covered in plan view by the main body 2H of the component 2 and directly adjoining it.
- the second is in plan view
- Sub-area 32 exclusively to the side of the main body 2H, the second sub-area 32 directly adjoining the first sub-area 31 and having a reduced layer thickness 32D in comparison with the sub-area 31.
- Embodiments essentially correspond to those shown in Figures ID, IE, 1F and 2A
- the contact surface 2F has additional topography steps, the topography steps being able to be formed by structuring the contact surface 2F or by forming a tip (English: spike) or several tips on the contact surface 2F.
- the topography step or steps extends into the opening 3R.
- a small step or peak is advantageous, but it could be that the additional topography steps are formed by several punctiform or linear structures on the contact surface 2F.
- Embodiments essentially correspond to those shown in Figures ID, IE, 1F and 2A
- connection column IC in plan view of the associated
- Embodiments essentially correspond to those shown in Figures ID, IE, 1F and 2A
- the carrier 1 has an insulation layer 15 which is arranged in the vertical direction between the main body 1H of the carrier 1 and the connecting layer 3.
- the connecting layer 3 directly adjoins the
- connection layer 3 and the insulation layer 15 have a plurality of common Openings 3R, in each of which a connection surface 1F is accessible or a connection column IC of the
- Connection layer IS is arranged.
- the insulation layer 15 can remain in the component 10.
- the insulation layer 15 can be a passivation or encapsulation of the components 2 or the
- Component 10 facilitate, especially if the
- Embodiments essentially correspond to those shown in FIGS. 6A, 6B, 6C and 6D, respectively
- the contact points 61 and 62 can be set up for electrical contacting of the component 2 and can be assigned to different electrical polarities of the component 2. It is also possible for the contact points 61 and / or 62 to be provided to form a signal path or several signal paths for integrated circuits.
- the component 2 covers two openings 3R, a connection surface 1F being exposed in each opening 3R.
- the insulating layer 15 is between the main body 1H of the carrier
- connection surface 1F or the connection layer IS can have partial areas which, in a plan view of the carrier 1, are covered by the connection layer 3 or are embedded in this in areas.
- the connecting layer 3 can have a second partial region 32 with the layer thickness 32D
- the main body 2H of the component 2 does not have a single point that directly adjoins the connecting layer 3.
- connection layer 3 can be removed to partially uncover the connection layer IS.
- the associated component 2 can be electrically contacted externally via the exposed regions of the connection layer IS.
- Embodiments essentially correspond to those shown in FIGS. 7A, 7B, 7C and 7D, respectively
- the component 2 in the Volume reduction of the connecting layer 3 is pressed into the connecting layer 3 in such a way that the
- Connection layer 3 is spatially spaced, now comes into contact with the connection layer 3 according to FIG. 8C and thus directly adjoins it.
- Exemplary embodiments essentially correspond to those shown in FIGS. 3A, 3B, 3C and 3D, respectively
- connection layer IS is unstructured and coherent.
- the connection layer IS can be partially embedded in the main body 1H of the carrier 1. Along the vertical direction, a front surface of the connection layer IS
- Connection layer IS with a front surface of the
- FIG. 10A The exemplary embodiment of a component 10 shown in FIG. 10A essentially corresponds to the component 10 shown in FIG. 1F.
- FIG. 10A shows that the main body 2H of the component 2 has a first semiconductor layer 21, a second
- the main body 2H of the component 2 can be a
- the component 2 is a light-emitting diode.
- Connection layer IS has a plurality of separate sub-layers which are partially in the main body 1H of the carrier 1 are embedded, in each of the openings 3R a
- Connection column IC protrudes beyond the associated sub-layer.
- the exemplary embodiment of a component 10 shown in FIG. 10B corresponds to the component 10 shown in FIG. 3C, which contains a plurality of components 2, each of which has a main body 2H with the active zone 23 and the semiconductor layers 21 and 22.
- the exemplary embodiment of a component 10 shown in FIG. 10C corresponds to the component 10 shown in FIG. 9C, which contains a plurality of components 2, each of which has a main body 2H with the active zone 23 and the semiconductor layers 21 and 22.
- Embodiments essentially correspond to those shown in Figures ID, IE and 1F
- Embodiments of various method steps for producing a component 10 In contrast to this, the exposed connection surface 1F or the connection column IC or the connection layer IS protrudes beyond the connection layer 3, namely in the direction away from the main body 1H of the carrier 1.
- the contact layer 2S can be made flat.
- the contact layer 2S can be made flat.
- Contact layer 2S according to FIGS. 11A, 11B and 11C has a plurality of openings or depressions.
- the contact layer 2S is formed locally in a step-like manner.
- the bottom surfaces of the openings or the depressions form exposed ones
- the exposed connection surface 1F is located within the associated opening or Depression of the contact layer 2S.
- the connection column IC or the exposed connection area 1F protrudes in particular into the associated opening of the contact layer 2S.
- the exposed connection surface 1F or the connection column IC is along the vertical direction by the distance D from the
- connection layer is IS or the
- Connection column IC in lateral directions partially or completely from the contact layer 2 and / or
- connection layer 3 enclosed. If, in particular, the layer thickness 3D of the connecting layer 3 is reduced, for example through shrinkage, the distance D can be reduced to zero, whereby the connection surface 1F is directly connected to the
- Contact area 2F is adjacent.
- Such a component 10 is shown schematically, for example, in FIG. 11C.
- connection column IC is not available.
- the connection layer IS can directly adjoin the contact pillar 2C and / or directly adjoin the connection pillar IC, either before or after the reduction in the layer thickness 3D of the connection layer 3, or both before and after the reduction in the layer thickness 3D of the connection layer 3.
- Connection layer IS and / or the contact layer 2S from one Formed solder material or coated with a solder material. In this case, it can be a remelted solder contact between the connection layer IS and the
- connection layer 3D vertical layer thickness of the connection layer
- connection layer and the contact pillar or the connection pillar
Landscapes
- Electric Connection Of Electric Components To Printed Circuits (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Structures For Mounting Electric Components On Printed Circuit Boards (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US17/609,256 US12295192B2 (en) | 2019-05-07 | 2020-05-06 | Method for producing a component, and component |
| CN202080034044.XA CN113826221B (zh) | 2019-05-07 | 2020-05-06 | 用于制造结构元件的方法和结构元件 |
| DE112020002252.8T DE112020002252A5 (de) | 2019-05-07 | 2020-05-06 | Verfahren zur herstellung eines bauelements und bauelement |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019111816.6A DE102019111816A1 (de) | 2019-05-07 | 2019-05-07 | Verfahren zur herstellung eines bauelements und bauelement |
| DE102019111816.6 | 2019-05-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2020225304A1 true WO2020225304A1 (de) | 2020-11-12 |
Family
ID=70682835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2020/062585 Ceased WO2020225304A1 (de) | 2019-05-07 | 2020-05-06 | Verfahren zur herstellung eines bauelements und bauelement |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US12295192B2 (de) |
| CN (1) | CN113826221B (de) |
| DE (2) | DE102019111816A1 (de) |
| WO (1) | WO2020225304A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022102367A1 (de) | 2022-02-01 | 2023-08-03 | OSRAM Opto Semiconductors Gesellschaft mit beschränkter Haftung | Zielträger, halbleiteranordnung und verfahren zum transferieren eines halbleiterbauelements und haltestruktur |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014100773A1 (de) * | 2014-01-23 | 2015-07-23 | Osram Opto Semiconductors Gmbh | Halbleiterbauelement und Verfahren zur Herstellung eines Halbleiterbauelements |
| US20170148777A1 (en) * | 2015-11-20 | 2017-05-25 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Optoelectronic device with light-emitting diodes comprising at least one zener diode |
| US20190088633A1 (en) * | 2017-03-16 | 2019-03-21 | Invensas Corporation | Direct-Bonded LED Arrays and Applications |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5796714A (en) * | 1994-09-28 | 1998-08-18 | Matsushita Electric Industrial Co., Ltd. | Optical module having a vertical-cavity surface-emitting laser |
| DE102004055677A1 (de) * | 2004-11-18 | 2006-06-01 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Chipträgerverbund und Verfahren zum Herstellen eines Chipträgerverbunds |
| DE102009009828A1 (de) | 2009-02-19 | 2010-09-02 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Bauteilanordnung und Verfahren zu dessen Herstellung |
| DE102011011378B4 (de) | 2011-02-16 | 2025-10-30 | OSRAM Opto Semiconductors Gesellschaft mit beschränkter Haftung | Halbleiterchip und Verfahren zur Herstellung von Halbleiterchips |
| DE102014103828A1 (de) * | 2014-03-20 | 2015-09-24 | Osram Opto Semiconductors Gmbh | Optoelektronisches Bauelement und Verfahren zur Herstellung von optoelektronischen Halbleiterbauelementen |
| DE102017113407A1 (de) * | 2017-06-19 | 2018-12-20 | Osram Opto Semiconductors Gmbh | Strahlungsemittierender Halbleiterchip, Verfahren zur Herstellung eines strahlungsemittierenden Halbleiterchips und ein Verfahren zur Herstellung einer strahlungsemittierenden Anordnung |
| CN119767820A (zh) * | 2018-04-16 | 2025-04-04 | 应用材料公司 | 使用暂时及永久接合的多层堆叠光学元件 |
-
2019
- 2019-05-07 DE DE102019111816.6A patent/DE102019111816A1/de not_active Withdrawn
-
2020
- 2020-05-06 WO PCT/EP2020/062585 patent/WO2020225304A1/de not_active Ceased
- 2020-05-06 DE DE112020002252.8T patent/DE112020002252A5/de active Pending
- 2020-05-06 US US17/609,256 patent/US12295192B2/en active Active
- 2020-05-06 CN CN202080034044.XA patent/CN113826221B/zh active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014100773A1 (de) * | 2014-01-23 | 2015-07-23 | Osram Opto Semiconductors Gmbh | Halbleiterbauelement und Verfahren zur Herstellung eines Halbleiterbauelements |
| US20170148777A1 (en) * | 2015-11-20 | 2017-05-25 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Optoelectronic device with light-emitting diodes comprising at least one zener diode |
| US20190088633A1 (en) * | 2017-03-16 | 2019-03-21 | Invensas Corporation | Direct-Bonded LED Arrays and Applications |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102019111816A1 (de) | 2020-11-12 |
| DE112020002252A5 (de) | 2022-01-27 |
| CN113826221A (zh) | 2021-12-21 |
| US20220238773A1 (en) | 2022-07-28 |
| US12295192B2 (en) | 2025-05-06 |
| CN113826221B (zh) | 2024-12-31 |
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