DE102016223208B4 - OPTOELECTRONIC ASSEMBLY, TISSUE, METHOD FOR PRODUCING AN OPTOELECTRONIC ASSEMBLY, METHOD FOR PRODUCING A TISSUE AND OPTOELECTRONIC COMPONENT - Google Patents

Abstract

Optoelectronic assembly (20), with at least one fiber (22), the lateral surface of which is at least partially electrically insulating and which extends in a first direction (23), a first conductor track (24) which is formed on the first fiber (22). and extending in the first direction (23), a second conductor track (25) formed next to the first conductor track (24) and spaced apart from the first conductor track (24) on the first fiber (22) and extending in the first direction (23), wherein at least one of the two conductor tracks (24, 25) is formed on the electrically insulating lateral surface of the fiber (22), so that the first conductor track (24) is electrically insulated from the second conductor track (25), a light guide (26), which is partially formed over the first conductor track (24), the second conductor track (25) and the fiber (22) and partially encloses the first conductor track (24), the second conductor track (25) and the fiber (22). , wherein in a partial area the first conductor track (24) and the second conductor track (25) are exposed, and an optoelectronic component (30) which is electrically connected to the first conductor track (24) and the second conductor track (25) and so in the partial area is arranged so that at least some of the light that is emitted by the optoelectronic component (30) is coupled into the light guide (26), or that at least some of the light that is coupled out of the light guide (26), is detected by means of the optoelectronic component (30).

Description

The invention relates to an optoelectronic assembly, a fabric, a method for producing an optoelectronic assembly, a method for producing a tissue and an optoelectronic component.

• Bei einem ersten Konzept werden die Textilien bildende Gewebe mittels optischer Fasern, beispielsweise Glasfasern oder polymeren optischen Fasern (POF), hergestellt. Dabei erfolgt eine Lichteinkopplung in die entsprechenden Faserbündel mittels LEDs an den Stirnseiten der Fasern. Das Licht breitet sich dann innerhalb der Fasern aufgrund von mehrfacher Totalreflexion aus. Eine Lichtauskopplung entlang der Fasern erfolgt beispielsweise durch Strukturieren der Oberflächen, beispielsweise durch Oberflächenaufrauhung und/oder partiellem Entfernen des Fasermantels (Cladding).
• Bei einem zweiten Konzept werden metallische Drähte in textile Gewebe eingewoben. An Kreuzungspunkten dieser Drähte werden klassische LEDs, beispielsweise Premold-LED-Packages, angeordnet und elektrisch kontaktiert, beispielsweise vorliegen,

Nowadays, bright textiles are increasingly coming onto the market. There are currently essentially two different concepts known for luminous textiles:

• In a first concept, the fabrics forming textiles are produced using optical fibers, for example glass fibers or polymer optical fibers (POF). Light is coupled into the corresponding fiber bundles using LEDs on the end faces of the fibers. The light then spreads within the fibers due to multiple total reflection. Light is extracted along the fibers, for example, by structuring the surfaces, for example by surface roughening and/or partial removal of the fiber sheath (cladding).
• In a second concept, metallic wires are woven into textile fabrics. Classic LEDs, for example premold LED packages, are arranged at crossing points of these wires and electrically contacted, for example,

An object of the invention is to provide an optoelectronic assembly that can be produced simply, quickly and/or inexpensively, by means of which an at least partially luminous fabric can be produced and/or which can be woven into a fabric using a conventional weaving process.

An object of the invention is to provide a fabric that can be produced easily, quickly and/or inexpensively and/or using a conventional weaving process and that can at least partially glow.

One object of the invention is to provide a method for producing an optoelectronic assembly that can be carried out simply, quickly and/or cost-effectively and that contributes to the fact that an at least partially luminous tissue, in particular, can be created easily, quickly and/or cost-effectively by means of the optoelectronic assembly can be produced in a conventional weaving process.

An object of the invention is to provide a method for producing a fabric that can be carried out simply, quickly and/or inexpensively and that allows the fabric to at least partially glow.

One object of the invention is to provide an optoelectronic component which contributes to the fact that an optoelectronic assembly for producing an at least partially luminous tissue and/or an at least partially luminous tissue can be designed particularly simply, quickly, precisely and/or cost-effectively.

An object of the invention is achieved by an optoelectronic assembly, with: at least one fiber, the lateral surface of which is at least partially designed to be electrically insulating and which extends in a first direction; a first conductive trace formed on the first fiber and extending in the first direction; a second conductor track, which is formed next to the first conductor track and at a distance from the first conductor track on the first fiber and extends in the first direction, wherein at least one of the two conductor tracks is formed on the electrically insulating lateral surface of the fiber, so that the first conductor track is electrically insulated from the second conductor track; a light guide which is partially formed over the first conductor track, the second conductor track and the fiber and partially encloses the first conductor track, the second conductor track and the fiber, with the first conductor track and the second conductor track being exposed in a partial area, and an optoelectronic component , which is electrically connected to the first conductor track and the second conductor track and which is arranged in the partial area such that at least some of the light emitted by the optoelectronic component is coupled into the light guide, or that at least some of the light , which is coupled out of the light guide, is detected by means of the optoelectronic component.

If the optoelectronic component is a light-emitting component, in other words a light source, the optoelectronic assembly 20 forms an optical fiber in which the light guide, light source and electrical contact of the light source are integrated. If the optoelectronic component is a light-absorbing component, in other words a photosensor or a solar cell, the optoelectronic assembly 20 forms an optical fiber in which the photosensor or solar cell, light guide and electrical contacting of the photosensor or solar cell are integrated. These optical fibers can be woven with other optical fibers and/or contact fibers in conventional weaving processes. The optoelectronic assembly thus makes it possible to provide an optical fiber that is already capable of producing light or generating energy. The optical fiber can become one Fabric, for example a textile fabric or a technical fabric, for example a piece of clothing or a tarpaulin, are further processed. It is not necessary to subsequently arrange and/or contact additional light sources or solar cells, so that an optical fiber, in particular a luminous or power-generating fiber, can be produced in a simple manner. The optoelectronic assembly can therefore be produced simply, quickly and cost-effectively and makes it possible to produce an at least partially luminous fabric in a simple manner, in particular using a conventional weaving process.

According to a further development, at least one recess is formed in the light guide, which extends in the radial direction up to the first conductor track and the second conductor track and which has the partial area. Providing the partial area in the form of a recess in the light guide contributes to the fact that the largest possible proportion of the light emitted by the optoelectronic component is coupled into the light guide and that the light guide and the partial area are particularly easy to produce, since, for example, the light guide first Fiber can be made completely enclosing and can subsequently be structured by forming the recess.

According to a further development, the optoelectronic component is designed and arranged such that the light emitted by it is at least partially emitted in the first direction. In particular, the optoelectronic component is a completely or at least essentially side-emitting component (side-looker, side-emitter). This contributes to the fact that at least a large part of the light generated is coupled into the light guide and distributed over the light guide. Alternatively, the optoelectronic component can be a volume emitter. This can help to avoid dark spots in the area of the optoelectronic components of the luminous optical fiber.

According to a further development, a surface of the optoelectronic component facing away from the fiber in the radial direction is covered with a layer that is partially transparent to the light emitted by the optoelectronic component. The partially transparent layer allows at least part of the light generated by the optoelectronic component to pass through to the outside. The partially transparent layer can, for example, have a light-scattering effect and/or have scattering particles. The partially transparent layer can be designed in terms of its transparency in such a way that, on the one hand, it allows enough light to pass from the optoelectronic component to the outside so that it does not appear as a dark spot on an otherwise luminous optical fiber, and at the same time it blocks enough light that the optoelectronic Component does not appear as a relatively strongly luminous point in an otherwise relatively weakly luminous optical fiber. Clearly speaking, a luminosity of the optoelectronic assembly in the area of the optoelectronic component can be adjusted by means of the partially transparent layer.

According to a further development, the recess is filled with a light-conducting filling material that at least partially embeds the optoelectronic component. The filling material can contribute to ensuring that the optoelectronic component is arranged in a particularly stable manner and/or that the optoelectronic component is protected against external influences. In addition, the filling material can be designed to be light-scattering in order to influence the emitted light and/or have light-converting components. The filling material can be formed alternatively or in addition to the partially transparent layer. For example, the partially transparent layer can be formed on the filling material or the filling material itself can form the partially transparent layer.

According to a further development, a radially outer surface of the light-conducting filling material is flush with a radially outer surface of the light guide. Clearly speaking, an outer surface of the filling material merges into an outer surface of the light guide without a shoulder or step. This contributes to the optoelectronic assembly having a uniform and/or smooth outer surface, in particular without depressions or elevations. This can, for example, help the optoelectronic assembly to be used as an optical fiber like a conventional fiber for producing a fabric. For example, when further processing the optoelectronic assembly, for example into a fabric, there is no risk that the optoelectronic assembly will get stuck on another optoelectronic assembly, contact fiber or part of the weaving device in the area of the recess of the light guide.

According to a further development, a light-reflecting or a light-absorbing blocking layer is formed starting from the optoelectronic component counter to the first direction. This allows the light to be coupled into the light guide exclusively along the first direction. This can, for example, help achieve a desired optical effect.

According to a further development, at least one further subregion is formed, which is spaced apart from the subregion in the first direction and in which the first conductor track and the second conductor track are exposed, and at least one further optoelectronic component is electrically connected to the first conductor track and the second conductor track and arranged in the further subregion in such a way that at least some of the light that is emitted by the further optoelectronic component is coupled into the light guide, or that at least some of the light that is coupled out of the light guide by means of the further optoelectronic component is recorded.

The two or more optoelectronic components can all be light-emitting components, all light-absorbing components, or both light-emitting and light-absorbing components. If all optoelectronic components are light-emitting components, an exclusively light-emitting optical fiber and/or an exclusively light-emitting fabric can be provided. If all optoelectronic components are light-absorbing components, an exclusively light-absorbing optical fiber and/or an exclusively light-absorbing fabric can be provided. If both light-emitting and light-absorbing components are used as optoelectronic components, an optoelectronic assembly that is both light-emitting and light-absorbing and/or a fabric that is both light-emitting and light-absorbing can be provided. For example, the energy that is necessary for the operation of the light-emitting components can be generated by means of the light-absorbing components. In this case, one, two or more energy storage devices can optionally be provided in or on the optoelectronic component, in which the energy generated can be stored until it is needed.

According to a further development, the optoelectronic component and the further optoelectronic component are electrically connected in series. This helps ensure that the optoelectronic components can be easily electrically contacted and/or controlled.

An object of the invention is achieved by a fabric with: two or more of the optoelectronic assemblies that are arranged next to each other; and a plurality of contact fibers, each of which has an electrically conductive fiber core and an insulator layer partially surrounding the corresponding fiber core, which are arranged crossing the optoelectronic assemblies and are interwoven with them and which are designed and arranged in such a way that they are electrically insulated from the first conductor tracks of the optoelectronic assemblies are and are electrically connected to the second conductor tracks of the optoelectronic assemblies.

If the optoelectronic components are light-emitting components, in other words light sources, the fabric is an optical fabric in which light guides, light sources and electrical contacts of the light sources are integrated. If the optoelectronic components are light-absorbing components, in other words photosensors or solar cells, the fabric forms an optical fabric into which photosensors or solar cells, light guides and electrical contacts of the photosensors or solar cells are integrated. If both light-emitting and light-absorbing components are used as optoelectronic components, the tissue can itself generate the energy for operating the light-emitting components by means of the light-absorbing components. In this case, the tissue can have one or more energy stores for temporarily storing the energy generated. These optical fabrics can be manufactured using conventional weaving processes. The fabric thus makes it possible in a simple manner to provide an optical fabric that is already capable of luminescence and/or energy generation. The fabric can be, for example, a textile fabric or a technical fabric, for example a piece of clothing or a tarpaulin. It is not necessary to subsequently arrange and/or contact additional light sources or solar cells, so that an optical fabric, in particular a luminous and/or power-generating fabric, can be produced in a simple manner. The fabric can therefore be produced simply, quickly and cost-effectively and can be produced in a simple manner, in particular using a conventional weaving process.

The tissue can be designed and in particular the optoelectronic assemblies of the tissue can be designed and arranged in such a way that the tissue can be controlled like a display and various shapes, patterns, characters, symbols, numbers and/or letters can be displayed by means of the optoelectronic assemblies.

According to a further development, one, two or more optoelectronic components of one of the optoelectronic assemblies are electrically connected in parallel to one, two or more optoelectronic components of another of the optoelectronic assemblies. This can help ensure that the optoelectronic assemblies within the tissue can be easily electrically contacted.

An object of the invention is achieved by a method for producing an optoelectronic assembly, in which: at least one fiber is provided, the lateral surface of which is at least partially designed to be electrically insulating and which extends in a first direction; forming a first trace on the first fiber to extend in the first direction; a second conductor track is formed next to the first conductor track and spaced apart from the first conductor track on the first fiber so that it extends in the first direction, at least one of the two conductor tracks being formed on the electrically insulating lateral surface of the fiber, so that the first conductor track is electrically insulated from the second conductor track; a light guide is formed partially over the first conductor track, the second conductor track and the fiber so that it at least encloses the first conductor track, the second conductor track and the fiber, with the first conductor track and the second conductor track being exposed in a partial area; and an optoelectronic component is electrically connected to the first conductor track and the second conductor track and is arranged in the partial area such that at least a portion of light emitted by the optoelectronic component is coupled into the light guide, or that at least a portion of Light that is coupled out of the light guide is detected by means of the optoelectronic component.

The developments and/or advantages of the optoelectronic assembly explained above can easily be transferred to the method for producing the optoelectronic assembly.

An object of the invention is achieved by a method for producing a fabric in which: two or more of the optoelectronic assemblies are arranged next to one another; and a plurality of contact fibers, each of which has an electrically conductive fiber core and an insulator layer partially enclosing the corresponding fiber core, are designed and woven with the optoelectronic assemblies in such a way that they are electrically insulated from the first conductor tracks of the optoelectronic assemblies and with the second conductor tracks of the optoelectronic Assemblies are electrically connected.

The developments and/or advantages of the fabric explained above can easily be transferred to the method for producing the fabric.

One object of the invention is achieved by an optoelectronic component which has a concavely curved mounting surface which, when used as intended, faces the lateral surface of the fiber. The intended use of the optoelectronic component is the arrangement of the optoelectronic component on the fiber. The concavely curved mounting surface enables a precise arrangement of the optoelectronic component on the fiber. In particular, the optoelectronic component can be attached particularly stably to the fiber and/or can be electrically contacted particularly well and/or easily with electrical conductor tracks in and/or on the fiber.

According to a further development, the curvature of the mounting surface corresponds to the curvature of the fiber. The fact that the curvature of the mounting surface corresponds to the curvature of the fiber means, for example, that the curvature of the mounting surface is similar to the curvature of the fiber and/or that a distance between the mounting surface and the lateral surface of the fiber is uniform.

According to a further development, the mounting surface has at least one electrical contact for electrically contacting the optoelectronic component. This contributes to the fact that the optoelectronic component can be electrically contacted on the fiber in a particularly simple and/or reliable manner.

Embodiments of the invention are shown in the figures and are explained in more detail below.

• 1 eine seitliche Schnittdarstellung eines Ausführungsbeispiels einer optoelektronischen Baugruppe;
• 2 eine seitliche Schnittdarstellung der optoelektronischen Baugruppe gemäß 1;
• 3 eine seitliche Schnittdarstellung eines Ausführungsbeispiels einer optoelektronischen Baugruppe;
• 4 eine seitliche Schnittdarstellung eines Ausführungsbeispiels einer optoelektronischen Baugruppe;
• 5 eine Draufsicht auf die optoelektronische Baugruppe gemäß 4;
• 6 eine perspektivische Ansicht eines Ausführungsbeispiels einer Kontaktfaser;
• 7 eine seitliche Schnittdarstellung eines Ausführungsbeispiels einer optoelektronischen Baugruppe;
• 8 eine Draufsicht auf ein Ausführungsbeispiel eines Gewebes;
• 9 eine seitliche Schnittdarstellung eines Ausführungsbeispiels einer optoelektronischen Baugruppe;
• 10 eine Seitenansicht eines optoelektronischen Bauelements 20 gemäß 9.

Show it:

• 1 a side sectional view of an exemplary embodiment of an optoelectronic assembly;
• 2 a side sectional view of the optoelectronic assembly according to 1 ;
• 3 a side sectional view of an exemplary embodiment of an optoelectronic assembly;
• 4 a side sectional view of an exemplary embodiment of an optoelectronic assembly;
• 5 a top view of the optoelectronic assembly according to 4 ;
• 6 a perspective view of an embodiment of a contact fiber;
• 7 a side sectional view of an exemplary embodiment of an optoelectronic assembly;
• 8th a top view of an embodiment of a fabric;
• 9 a side sectional view of an exemplary embodiment of an optoelectronic assembly;
• 10 a side view of an optoelectronic component 20 according to 9 .

In the following detailed description, reference is made to the accompanying drawings, which form a part of this description and in which are shown, by way of illustration, specific embodiments in which the invention may be practiced. Because components of embodiments may be positioned in a number of different orientations, the directional terminology is for illustrative purposes and is not in any way limiting. It is to be understood that other embodiments may be used and structural or logical changes may be made without departing from the scope of the present invention. It is to be understood that the features of the various embodiments described herein may be combined with one another unless specifically stated otherwise. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is defined by the appended claims. In the figures, identical or similar elements are provided with identical reference numerals where appropriate.

An optoelectronic assembly can have one, two or more optoelectronic components. Optionally, an optoelectronic assembly can also have one, two or more electronic components. An electronic component can, for example, have an active and/or a passive component. An active electronic component can, for example, have a computing, control and/or regulating unit and/or a transistor. A passive electronic component can, for example, have a capacitor, a resistor, a diode or a coil.

An optoelectronic component can be a component that emits electromagnetic radiation or a component that absorbs electromagnetic radiation. A component that absorbs electromagnetic radiation can be, for example, a solar cell. In various exemplary embodiments, an electromagnetic radiation-emitting component can be a semiconductor component that emits electromagnetic radiation and/or can be designed as a diode that emits electromagnetic radiation, as a diode that emits organic electromagnetic radiation, as a transistor that emits electromagnetic radiation, or as a transistor that emits organic electromagnetic radiation be. The radiation can be, for example, light in the visible range, UV light and/or infrared light. In this context, the component emitting electromagnetic radiation can be designed, for example, as a light emitting diode (LED), as an organic light emitting diode (OLED), as a light emitting transistor or as an organic light emitting transistor. In various exemplary embodiments, the light-emitting component can be part of an integrated circuit. Furthermore, a plurality of light-emitting components can be provided, for example accommodated in a common housing.

1 shows a side sectional view of an exemplary embodiment of an optoelectronic assembly 20. 1 shows in particular a longitudinal section through the optoelectronic assembly 20. The optoelectronic assembly 20 has at least one optoelectronic component 30, a fiber 22, an electrically conductive first conductor track 24, an electrically conductive second conductor track 25 and a light guide 26.

2 shows a side sectional view of the optoelectronic assembly 20 according to 1 . 2 shows in particular a cross section through the optoelectronic assembly 20 in the area of the optoelectronic component 30, wherein in 2 To simplify the representation of the light guide 26 is not shown.

The optoelectronic assembly 20 is overall fibrous and can be used, for example, to produce a fabric or be part of a fabric. For example, a fabric, for example for clothing, or a technical fabric, for example a tarpaulin, can be produced using the optoelectronic assembly 20.

The fiber 22 extends in a first direction 23. A radial direction is perpendicular to the first direction 23. The fiber 22 can be made much longer than in 1 is shown. For example, can 1 only show a partial section of the fiber 22. The fiber 22 is designed to be electrically insulating. The fiber 22 can, for example, comprise or be formed from polyimide or glass. One, two or more layers, for example functional layers, i.e. layers with a special function, can be formed on the fiber 22.

The fiber 22 can have a diameter in the radial direction, for example from 100 pm to 10 mm, for example from 500 pm to 5 mm, from 600 pm to 1 mm.

The first conductor track 24 and the second conductor track 25 are formed on the fiber 22. The first conductor track 24 and the second conductor track 25 extend in the first direction 23 and are spaced apart from one another perpendicular to the first direction 23. The first conductor track 24 and the second conductor track 25 are electrically insulated from each other. The first conductor track 24 and the second conductor track 25 can be formed by one, two or more electrically conductive layers and/or can have, for example, one, two or more metals or metallic alloys. The metal(s) and/or the alloy(s) may include, for example, copper, silver and/or aluminum. The conductor tracks 24, 25 can, for example, be formed as a common closed layer on the fiber 22 and/or structured on the fiber 22, for example by means of laser ablation. The first and second conductor tracks 24, 25 can also be made much longer than they are in 1 are shown. For example, can 1 only show a partial section of the conductor tracks 24, 25.

The light guide 26 is formed on the fiber 22 and the conductor tracks 24, 25. In particular, the light guide 26 partially covers and partially encloses the fiber 22 and the conductor tracks 24, 25. For example, the fiber 22 and the conductor tracks 24, 25 can be largely embedded in the light guide 26. The light guide 26 can also be referred to as a light-conducting layer. The light guide 26 can, for example, have or be formed from one, two or more polymers, for example PMMA or synthetic resin, for example epoxy resin. The light guide 26 can be formed, for example, in a deposition process on the fiber 22 and the conductor tracks 24, 25.

The first conductor track 24 and the second conductor track 25 are exposed in at least one partial area. In particular, the light guide 26 has a recess 28 which extends up to the conductor tracks 24, 25 and optionally up to the fiber 22 and in which these are exposed. The recess 28 can be formed in the light guide 26, for example by means of laser ablation. Optionally, the light guide 26, in particular a radially outer surface of the light guide 26, can be structured, for example to produce one or more coupling structures for coupling out light, for example also by means of a laser.

The optoelectronic component 30 is arranged in the partial area, in particular in the recess 28. The optoelectronic component 30 has an LED chip 32 and optionally a converter material 33, which optionally partially surrounds the LED chip 32. The LED chip 32 has an electrical first contact 36 and an electrical second contact 37 for electrically contacting the optoelectronic component 30. The contacts 36, 37 are arranged on a mounting surface of the optoelectronic component 30 facing the fiber 22. Alternatively, at least one of the contacts 36, 37 can be arranged on a side of the optoelectronic component 30 facing away from the fiber 22. The optoelectronic component 30 is electrically connected to the first conductor track 24 and to the second conductor track 25. In particular, the first contact 36 is electrically connected to the first conductor track 24 and the second contact 37 to the second conductor track 25. For electrical contacting of the contacts 36, 37 with the conductor tracks 24, 25, for example, a contact means 50 can be used. The contact means 50 can be, for example, solder or an electrically conductive adhesive. The LED chip 32 is, for example, a partially side-emitting component or a completely side-emitting component and/or, for example, a sapphire flip chip. A partially transparent layer 34 is formed above the LED chip 32 and in particular on the converter material 33, that is to say on a radially outer surface of the optoelectronic component 30.

The fiber 22 serves as a carrier for the conductor track 24, 25, the light guide 26 and the optoelectronic component 30. In addition, the fiber 22 can serve to transport away heat that is generated during the operation of the optoelectronic component 30. The conductor tracks 24, 25 are used to electrically contact the optoelectronic component 30, in particular for supplying electrical current to the optoelectronic component 30. In particular, electrical energy for emitting light can be supplied to the optoelectronic component 30 via the conductor tracks 24, 25. In addition, the optoelectronic component 30 can be controlled via the conductor tracks 24, 25, for example switched on or off. The converter material 33 serves to convert the light generated by the LED chip 30 in terms of its wavelength. The light guide 26 serves to transport the light generated and optionally converted by the LED chip 30 away from the optoelectronic component 30, in particular along the first direction 23 or against the first direction 23, and to emit the light at one of the optoelectronic component 30 spaced point, for example at a point on the light guide 26 at which it has one or more coupling structures.

If energy is supplied to the optoelectronic component 30, it can generate and emit light. The light generated by the optoelectronic component 30, which essentially is emitted in the first direction 23, is also referred to below as the first light 42. The light generated by the optoelectronic component 30, which is emitted essentially counter to the first direction 23, is also referred to below as second light 44. The light generated by the optoelectronic component 30, which is emitted essentially perpendicular to the first direction 23, i.e. in the radial direction away from the fiber 22, is also referred to below as third light 46.

If the converter material 33 is provided, at least part of the light generated by the LED chip 32 is converted in terms of its wavelength. For example, the LED chip 32 can generate blue light and the blue light can be partially converted into yellow light using the converter material 33. The yellow and blue light can then mix to form white light, so that the optoelectronic component 30 emits white light.

The first and second lights 42, 44 are coupled into the light guide 26 in the first direction 23 or against the first direction 23. The light coupled into the light guide 26 propagates in the light guide 26 with multiple total reflection and emerges from the light guide 26 in the area of the decoupling structures. This causes the light guide 26 to appear from the outside as an elongated luminous structure, in particular as a luminous fiber. The third light 46 partially passes through the partially transparent layer 34. The partially transparent layer 34 causes the optoelectronic component 30 to appear from the outside neither as a dark nor as an excessively bright point in the luminous structure, in particular in the luminous fiber, during operation. If an exclusively side-emitting component is used as the LED chip 32, the light of which is coupled into the light guide 26 essentially along the first direction 23 or against the first direction 23, the converter material 33 can also serve to ensure that part of the The light generated by the LED chip 32 is emitted in the radial direction as the third light 46 of the optoelectronic component 30.

Alternatively to the one in the 1 and 2 In the illustrated embodiment, the fiber 22 can be designed to be electrically conductive. For example, the fiber 22 can be used to electrically conduct current. The fiber 22 can, for example, be a metal fiber (MTF) that has or consists of metal, for example gold, silver, iron, tungsten, aluminum, copper, lead and/or their alloys. To put it bluntly, metal fibers are fine wires that are called fibers because of their ability to be processed into textiles. The use of a metal fiber as fiber 22 can be particularly advantageous for transporting away heat due to the good thermal conductivity of metals. If the fiber 42 is made of metal, electrically insulating layers, for example made of a ceramic or polymeric electrically insulating material, can be formed on the fiber 42 as one, two or more layers, for example functional layers. The conductor tracks 24, 25 can then be formed on the electrically insulating layer(s). Alternatively or additionally, the converter material 33 can be dispensed with. Alternatively or additionally, an LED chip that emits exclusively in the first direction 23 and/or an LED chip that emits exclusively in the opposite direction to the first direction can be used as the LED chip 32. Furthermore, the optoelectronic component 30 can have an OLED as an alternative or in addition to the LED chip 32. Furthermore, the optoelectronic component 30 can alternatively or additionally have a photosensor and/or a solar cell, in which case the light guide 26 can be used to guide external light, i.e. light incident on the light guide 26 from outside, towards the optoelectronic component 30 and in which case the Conductor tracks 24, 25 can be used to conduct electrical current away from the optoelectronic component 30.

3 shows a side sectional view of an exemplary embodiment of an optoelectronic assembly 20. The optoelectronic assembly 20 can, for example, largely correspond to the one described above with reference to 1 and 2 correspond to the optoelectronic assembly 20 explained. The recess 28 is filled with a filling material 52. For example, the optoelectronic component 30 is embedded in the filling material 52. The filling material 52 is transparent or at least translucent for the light emitted by the optoelectronic component 30. Optionally, the filler material 52 may have conversion material for converting the generated light in terms of its wavelength. The partially transparent layer 34 is formed on the filling material 52. Alternatively, the filling material 52 may have the partially transparent layer 34.

For example, the partially transparent layer 34 can be formed from an outer region of the filling material 52. Optionally, the filler material 52 and/or the partially transparent layer 34 can be designed such that their outer surface is flush with an outer surface of the light guide 26. This can contribute to the fact that when the optoelectronic component 20 is processed into a fabric, the optoelectronic component 20 can be used like a conventional fiber and/or a conventional weaving process can be used.

4 shows a side sectional view of an exemplary embodiment of an optoelectronic assembly 20. The optoelectronic assembly 20 can, for example, largely be one of the ones with reference to 1 , 2 or 3 correspond to the optoelectronic assemblies 20 explained.

5 shows a top view of the optoelectronic assembly 20 according to 4 , whereby for reasons of better representation in 5 the light guide 26 was not shown.

The first conductor track 24 extends in the first direction 23 only over a short portion of the fiber 22. A contact fiber 56 extends transversely, in particular perpendicularly, to the fiber 22, the conductor tracks 24, 25 and/or the light guide 26. The contact fiber 56 has an electrically conductive fiber core 62. The fiber core 62 is exposed at least in a partial area and is electrically connected in the partial area to the first conductor track 24 by means of a contact point 58 and electrically insulated from the second conductor track 25 by means of an electrical insulation 64. The contact fiber 56 is used to electrically contact the first contact 36 of the optoelectronic component 30 by means of the first conductor track 24.

The optoelectronic component 30 can be a component that emits exclusively in the first direction 23. The optoelectronic component 30 has no converter material 33. Alternatively, the optoelectronic component 30 can be used with reference to the 1 to 3 explained component can be used, for example the optoelectronic component 30 can emit light in the first direction 23, opposite to the first direction 23 and / or perpendicular to the first direction 23 and / or have the converter material 33.

On a side of the contact fiber 56 facing away from the optoelectronic component 30, a light-absorbing or a light-reflecting blocking layer 60 can be formed on a wall of the recess 28. The blocking layer 60 can, for example, help prevent light emitted by the optoelectronic component 30 from being coupled into the light guide 26 beyond the contact fiber 56.

Optionally, this can be done in the recess 28 4 and 5 Filling material 52, not shown, may be arranged. Furthermore, the in 4 shown optoelectronic assembly 20 optionally have the partially transparent layer 34. Furthermore, the ones in the can optionally be used 1 to 3 explained optoelectronic assemblies 20 optionally have the blocking layer 60 and / or be electrically contacted by means of the contact fiber 56.

6 shows a perspective view of an exemplary embodiment of a contact fiber 56. The contact fiber 56 can, for example, relate to the 4 and 5 explained contact fiber 56. The contact fiber 56 has the fiber core 62. The fiber core 62 is largely covered by an insulator layer 68 for electrically insulating the fiber core 62. The fiber core 62 is exposed in the partial area and is not covered by the insulator layer 68.

When producing the contact fiber 56, the fiber core 62 can, for example, first be completely covered by the insulator layer 68, for example in a coating or in a dipping process. The fiber core 62 can then be exposed, for example by means of laser ablation.

7 shows a side sectional view of an exemplary embodiment of an optoelectronic assembly 20. The optoelectronic assembly 20 has a plurality of recesses 28 which are spaced apart from one another in the first direction 23 and in each of which an optoelectronic component 30 is arranged. The optoelectronic components 30 are electrically contacted by means of the first conductor track 24 and the second conductor track 25 and corresponding contact fibers 56. The optoelectronic components 30, the conductor tracks 24, 25, the light guide 26 and the contact fibers 56 are corresponding to those with reference to 4 to 6 explained optoelectronic component 30, conductor tracks 24, 25, light guide 26 or contact fiber 56. Alternatively, the optoelectronic components 30, the conductor tracks 24, 25 and the light guide 26 can correspond to those with reference to 1 to 3 explained optoelectronic components 30, conductor tracks 24, 25 or light guides 26. In other words, those related to the 1 to 3 explained optoelectronic assemblies 20 have a plurality of recesses 28 in the light guide 26 spaced apart from one another in the first direction 23 and correspondingly a plurality of optoelectronic components 30 arranged therein.

8th shows a top view of an embodiment of a fabric. The tissue has several optoelectronic assemblies 20, which, for example, largely correspond to one of the ones related to the 1 to 7 explained optoelectronic assemblies 20 can be formed. The optoelectronic assemblies 20 are arranged next to one another and spaced apart from one another. The optoelectronic assemblies 20 are parallel or at least approximately parallel in plan view lel arranged to each other. In addition, the fabric has a plurality of contact fibers 56, which, for example, largely correspond to one of the ones related to the 4 to 7 explained contact fibers 56 can be formed. The contact fibers 56 are arranged next to one another and spaced apart from one another. The contact fibers 56 are arranged parallel or at least approximately parallel to one another in a plan view. The contact fibers 56 cross the optoelectronic assemblies 20. In particular, the contact fibers 56 cross the optoelectronic assemblies 20 in plan view at a right angle or at least approximately at a right angle. The contact fibers 56 and the optoelectronic assemblies 20 are woven together and form the fabric. The optoelectronic assemblies 20 have the optoelectronic components 30.

During operation of the optoelectronic assemblies 20, the optoelectronic components 30 emit light, which is largely coupled into the light guides 26, causing the tissue to glow. By specifically arranging the recesses 28 and the optoelectronic components 30 in the recesses 28 and optionally the blocking layers 60 and/or using various weaving techniques and/or weaving processes, different luminous images, luminous patterns and/or luminous lettering can be generated in a targeted manner.

9 shows a side sectional view of an exemplary embodiment of an optoelectronic assembly 20. The optoelectronic assembly 20 can, for example, largely be one of the ones with reference to 1 to 7 explained optoelectronic assemblies 20 be designed accordingly and / or in the reference to 8th explained tissue be arranged. At the in 9 In the exemplary embodiment shown, the light guide 26 is formed only on one side of the optoelectronic component 30. Alternatively, the light guide can be formed on both sides of the optoelectronic component 30.

10 shows a side view of the optoelectronic component 20 according to 9 . The optoelectronic component 20 has a curved mounting surface 80. The mounting surface 80 is the surface of the optoelectronic component 30 that faces the fiber 22. The optoelectronic component 30 has a housing 70, the underside of which forms the mounting surface 80. Two LED chips 32 are arranged in the housing 70, which can be designed, for example, according to the LED chips 32 explained above.

In 10 a radial distance between an outer surface of the fiber 22 and the mounting surface 80 is shown relatively large for clear illustration. In reality, the radial distance can be significantly smaller. Accordingly, in contrast to 10 In reality, the radius and curvature of the fiber 22 and the curved mounting surface 80 may be almost the same size. In other words, a curvature of the mounting surface 80 can correspond to a curvature of the fiber 22, in particular the outer surface of the fiber 22.

The curved mounting surface 80 contributes to the fact that the optoelectronic component 30 can be arranged quickly, easily and/or particularly precisely on the fiber 22 and/or electrically contacted with the conductor tracks 24, 25.

Optionally, a third conductor track 72 is formed on the fiber 22. Optionally, the optoelectronic component 30 has an electrical third contact 74. If necessary, the third contact 74 and the third conductor track 22 can be electrically connected to one another. Optionally, the optoelectronic component 30 also emits third light 46, i.e. light counter to the first direction 23, for example if the light guide 26 is arranged on both sides of the optoelectronic component 30.

Alternatively to the in 10 In the exemplary embodiment shown, the optoelectronic component 30 can have only one LED chip 32 or more than two LED chips 32. Furthermore, the optoelectronic components 30 explained above can also have one, two or more LED chips 32.

The invention is not limited to the exemplary embodiments specified. For example, those related to the 1 to 10 explained exemplary embodiments can be combined with one another. For example, the various optoelectronic components 30, in particular with or without converter material 30 and/or with or without a curved mounting surface 80, can be used in combination with the various light guides 26, fibers 22, filling materials 52, blocking layers 60 and/or partially transparent layers 34.

REFERENCE SYMBOL LIST

20

optoelectronic assembly

22

fiber

23

first direction

24

first conductor track

25

second conductor track

26

light guide

28

recess

30

optoelectronic component

32

LED chip

33

Converter material

34

partially transparent layer

36

first contact

37

second contact

42

first light

44

second light

46

third light

50

Contact means

52

filling material

56

contact fiber

58

Contact point

60

blocking layer

62

fiber core

64

electrical insulation

68

Insulator layer

70

Housing

72

third conductor track

74

third contact

80

Mounting surface

Claims (16)

Optoelectronic assembly (20), with at least one fiber (22), the lateral surface of which is at least partially electrically insulating and which extends in a first direction (23), a first conductor track (24) which is formed on the first fiber (22) and extends in the first direction (23), a second conductor track (25), which is formed next to the first conductor track (24) and at a distance from the first conductor track (24) on the first fiber (22) and extends in the first direction (23), wherein at least one of the two conductor tracks (24, 25) is formed on the electrically insulating lateral surface of the fiber (22), so that the first conductor track (24) is electrically insulated from the second conductor track (25), a light guide (26), which is partially formed over the first conductor track (24), the second conductor track (25) and the fiber (22) and the first conductor track (24), the second conductor track (25) and the fiber (22) partially encloses, with the first conductor track (24) and the second conductor track (25) being exposed in a partial area, and an optoelectronic component (30) which is electrically connected to the first conductor track (24) and the second conductor track (25) and which is arranged in the partial area such that at least part of the light emitted by the optoelectronic component (30). is coupled into the light guide (26), or that at least a portion of light that is coupled out of the light guide (26) is detected by means of the optoelectronic component (30). Optoelectronic assembly according to Claim 1 , in which at least one recess (28) is formed in the light guide (26), which extends in the radial direction up to the first conductor track (24) and the second conductor track (25) and which has the partial area. Optoelectronic assembly (20) according to one of the preceding claims, in which the optoelectronic component (30) is designed and arranged such that the light (42, 44, 46) emitted by it is at least partially emitted in the first direction (23). Optoelectronic assembly (20) according to one of the preceding claims, in which a surface of the optoelectronic component (30) facing away from the fiber (22) in the radial direction is covered with a layer (34) that is partially transparent to the light emitted by the optoelectronic component (30). is. Optoelectronic assembly (20) according to Claim 2 or after one of the Claims 3 or 4 combined with Claim 2 , in which the recess (28) is filled with a light-conducting filling material (52) which at least partially embeds the optoelectronic component (30). Optoelectronic assembly (20) according to Claim 5 , in which a radially outer surface of the light-conducting filling material (52) is flush with a radially outer surface of the light guide (26). Optoelectronic assembly (20) according to one of the preceding claims, in which, starting from the optoelectronic component (30), a light-reflecting or a light-absorbing blocking layer (60) is formed counter to the first direction (23). Optoelectronic assembly (20) according to one of the preceding claims, with at least one further subregion which is spaced in the first direction from the subregion and in which the first conductor track (24) and the second conductor track (25) are exposed, and at least one further optoelectronic component (30) which is electrically connected to the first conductor track (24) and the second conductor track (25) and which is arranged in the further subregion such that at least some of the light (42, 44, 46) , which is emitted by the further optoelectronic component (30), is coupled into the light guide (26), or that at least part of the light that is coupled out of the light guide (26) is detected by means of the further optoelectronic component (30). . Optoelectronic assembly (20) according to Claim 8 , in which the optoelectronic component (30) and the further optoelectronic component (30) are electrically connected in series. tissue, with two or more optoelectronic assemblies (20) according to one of the preceding claims, which are arranged next to one another, and a plurality of contact fibers (56), each of which has an electrically conductive fiber core (62) and an insulator layer (68) partially surrounding the corresponding fiber core (62), which are arranged crossing the optoelectronic assemblies (20) and are interwoven with them and which are designed in this way are arranged so that they are electrically insulated from the first conductor tracks (24) of the optoelectronic assemblies (20) and are electrically connected to the second conductor tracks (25) of the optoelectronic assemblies (20). tissue after Claim 10 , in which one, two or more optoelectronic components (30) of one of the optoelectronic assemblies (20) are electrically connected in parallel to one, two or more optoelectronic components (30) of another of the optoelectronic assemblies (20). Method for producing an optoelectronic assembly (20), in which at least one fiber (22) is provided, the lateral surface of which is at least partially electrically insulating and which extends in a first direction (23), a first conductor track (24) is formed on the first fiber (22) so that it extends in the first direction (23), a second conductor track (25) is formed next to the first conductor track (24) and spaced apart from the first conductor track (24) on the first fiber (22) so that it extends in the first direction (23), at least one of the two Conductor tracks (24, 25) are formed on the electrically insulating lateral surface of the fiber (22), so that the first conductor track (24) is electrically insulated from the second conductor track (25), a light guide (26) is formed partially over the first conductor track (24), the second conductor track (25) and the fiber (22) so that it covers the first conductor track (24), the second conductor track (25) and the fiber (22 ) partially encloses, with the first conductor track (24) and the second conductor track (25) being exposed in a partial area, and an optoelectronic component (30) is electrically connected to the first conductor track (24) and the second conductor track (25) and is arranged in the partial area so that at least some of the light (42, 44, 46) emitted by the optoelectronic component (30) is emitted, is coupled into the light guide (26), or that at least a portion of light that is coupled out of the light guide (26) is detected by means of the optoelectronic component (30). Method for producing a fabric, in which two or more optoelectronic assemblies (20) according to one of Claims 1 until 8th are arranged next to each other, and a plurality of contact fibers (56), each of which has an electrically conductive fiber core (62) and an insulator layer (68) partially enclosing the corresponding fiber core (62), are formed in this way and woven with the optoelectronic assemblies (20), that they are electrically insulated from the first conductor tracks (24) of the optoelectronic assemblies (20) and are electrically connected to the second conductor tracks (25) of the optoelectronic assemblies (20). Optoelectronic component (30) for use in one of the optoelectronic assemblies (20) according to one of Claims 1 until 9 and/or the tissue according to one of the Claims 10 or 11 , which has a concavely curved mounting surface (80) which, when used as intended, faces the lateral surface of the fiber (22). Optoelectronic component (30). Claim 14 , in which the curvature of the mounting surface (80) corresponds to the curvature of the fiber (22). Optoelectronic component (30) according to one of the Claims 14 or 15 which has at least one electrical contact (36, 37, 74) on the mounting surface (80) for electrically contacting the optoelectronic component (30).

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