Patent Publication Number: US-2020287111-A1

Title: Production of optoelectronic components

Description:
The present invention relates to a method for producing optoelectronic components. The invention furthermore relates to an optoelectronic component. 
     This patent application claims the priority of German Patent Application 10 2017 128 457.5, the disclosure content of which is incorporated here by reference. 
     An optoelectronic component for generating light radiation may be implemented in the form of a surface-mountable QFN (Quad Flat No Leads) component. During the production of such components, which may be carried out on a panel, a metal lead frame may be used. The lead frame comprises lead frame sections and connecting bars connecting the lead frame sections (also referred to as tie bars or support bars). The lead frame sections are used for carrying semiconductor chips and for electrical contacting. The connecting bars are used to hold the lead frame together. 
     The optoelectronic components may be produced with one or more radiation-emitting semiconductor chips, and optionally with a driver chip as well. A package body comprising a cavity for receiving the one or more semiconductor chips may furthermore be formed. To this end, a plastic body connected to the lead frame and comprising cavities may be formed, which is severed together with the connecting bars of the lead frame during singulation carried out at the end of the method. 
     During production, warping of the connecting bars of the lead frame, and therefore productivity losses, may occur. 
     Depending on the design of the optoelectronic components and the number of lead frame sections per component, the lead frame may furthermore comprise frame parts assigned to the components. This is associated with a space requirement and corresponding costs. The case of an optoelectronic component comprising a package with a cavity, in which radiation-emitting semiconductor chips and a driver chip are arranged, the driver chip may be illuminated by the radiation-emitting semiconductor chips, which may impair its functionality. 
     The object of the present invention is to provide a solution for improved production of optoelectronic components, as well as for an improved optoelectronic component. 
     This object is achieved by the features of the independent patent claims. Further advantageous embodiments of the invention are specified in the dependent claims. 
     According to one aspect of the invention, a method is provided for producing optoelectronic components. In the method, a metal carrier is provided. The carrier comprises a front side and a rear side opposite to the front side. A further step is front-side removal of carrier material, so that the carrier comprises carrier sections protruding in the region of the front side and depressions arranged between them. The method furthermore comprises formation of a plastic body adjoining carrier sections, and arranging of optoelectronic semiconductor chips on carrier sections. A further step is rear-side removal of carrier material in the region of the depressions, so that the carrier is structured into separate carrier sections. The method furthermore comprises carrying out singulation. In this step, the plastic body is severed between separate carrier sections and singulated optoelectronic components comprising at least one optoelectronic semiconductor chip are formed. 
     In the method, prestructuring of the mechanical carrier provided is carried out by metal carrier material of the carrier being removed on the front side. The metal carrier prestructured in this way comprises carrier sections protruding in the region of the front side and depressions arranged between them. In this state, the protruding carrier sections are still connected to one another by rear-side carrier material. The protruding carrier sections may be enclosed circumferentially by the depressions. The depressions may merge into one another and form a continuous trench structure. 
     The plastic body may be formed after the front-side removal of metal carrier material, and therefore on the prestructured metal carrier. The formation of the plastic body may comprise arranging of a plastic material on the prestructured carrier. In this case, the plastic material may be arranged at least in the depressions of the carrier. 
     By the rear-side removal of metal carrier material of the carrier, which may be carried out after the arranging of a plastic material of the plastic body, or after the formation of the plastic body, the carrier is structured into separate metal carrier sections, i.e. ones which are no longer connected to one another by carrier material. This process is carried out at predetermined positions in the region of the previously produced depressions. In this way, the carrier sections protruding in the region of the front side of the carrier may merge into the separate carrier sections, or may be converted into them, or in other words the carrier sections previously connected to one another may be separated from one another. In this way, short open circuit connections of carrier sections may be broken. After the prestructuring and after the structuring of the carrier, there is respectively a matching number of carrier sections. The separate carrier sections may be held together at least by the plastic body. 
     During the singulation, the plastic body, and therefore the previously produced component panel, are severed between the separate metal carrier sections. In this way, singulated optoelectronic components comprising at least one optoelectronic semiconductor chip are formed. The optoelectronic components may comprise a plurality of separate carrier sections and a plastic package body obtained from the plastic body by the severing. The at least one optoelectronic semiconductor chip may be arranged on at least one carrier section. 
     The optoelectronic components produced according to the method may be QFN components which are suitable for surface mounting (SMT, Surface Mounting Technology). In the optoelectronic components, the metal carrier sections, or at least some of the carrier sections, may form rear-side connection surfaces of the components. These carrier sections may furthermore protrude on a rear side of the components. In this way, the components may comprise a structured rear side. 
     The proposed method offers a range of advantages. The prestructured metal carrier may have a high stability and robustness. The stability may be higher than in the case of a conventional lead frame comprising lead frame sections and connecting bars. Consequently, the method may be carried out with high reliability and productivity. Furthermore, the method may be carried out economically. This is because besides connecting bars, use of frame parts may also be obviated. The omission of connecting bars furthermore makes it possible to produce the optoelectronic components with small external dimensions. In addition, high flexibility is made possible in relation to the configuring of the carrier sections. For example, a configuration may therefore be implemented in which, for each of the components produced, at least one metal carrier section is enclosed by a group of carrier sections. Furthermore, the singulation, during which the plastic body is severed between the separate metal carrier sections, may be carried out simply and economically. This is because slow vision or sawing of metal carrier material is not carried out in this case. 
     Because of the use of the metal carrier, which is structured into separate carrier sections in the course of the method, the optoelectronic components may be distinguished by efficient dissipation of heat and a low thermal resistance. Furthermore, because of the severing of the plastic body between separate metal carrier sections, the optoelectronic components may comprise a circumferential lateral surface (totality of the lateral outer sides) which is formed exclusively by the plastic package body. In this way, it is possible to avoid problems (for example, corrosion, sealing defects) such as may arise in the case of conventional components with metal connecting bars to be severed which extend as far as lateral outer sides. 
     Further possible embodiments and details, which may be envisioned for the method and for optoelectronic components produced according to the method, are described below. 
     The metal carrier provided may have a plate-shaped or strip-shaped configuration. The carrier may also have a planar or substantially planar front side, as well as a planar or substantially planar rear side. Furthermore, the carrier may for example be made from copper, or comprise copper. Also possible is a configuration in which the carrier is made from a different metal material, or comprises a different metal material, example iron-nickel, aluminum or molybdenum. 
     In a further embodiment, the front-side removal and the rear-side removal of metal carrier material may be carried out by means of etching. For example, isotropic etching is possible. This may be carried out by a wet chemical etching method. As a result of isotropic etching, the depressions may have a round cross-sectional profile. The depressions may also comprise an undercut, so that interlocking is possible between the carrier and the plastic body, and therefore also between the separate carrier sections and the plastic body. Furthermore, the separate carrier sections, or at least some of the carrier sections, may comprise side flanks with two curved partial flanks forming a common edge. 
     In respect of the etching, the metal carrier may be provided with an etching mask on the front side and an etching mask on the rear side. The etching masks may comprise separate layer sections, with which regions of the front side and of the rear side of the carrier are covered. 
     Furthermore, the front-side etching mask and/or the rear-side etching mask may be metal etching masks. Such etching masks may be formed on the metal carrier by using at least one metallization method (plating). The metal etching masks may still remain on the carrier and the carrier sections after the removal of carrier material, and may to this extent be regarded as an integral part of the carrier and of the carrier sections. In this case, the etching masks may be used as contactable coatings, which are suitable for example for soldering, connection of contact structures, for example bond wires, etc. 
     It is also possible to use a resist mask, consisting of a photoresist material, as an etching mask. Such an instance may be envisioned for a rear-side etching mask and for the case, explained below, in which the rear-side etching mask is removed and metal carrier sections are subsequently provided with a wetting layer. The configuration consisting of a photoresist material allows simple removal of the etching mask. A front-side etching mask may also be used in the form of a resist mask consisting of a photoresist material. 
     During the structuring of the metal carrier into separate carrier sections, there is furthermore the possibility of removing, or etching, carrier material on the rear side not only in the region of the depressions but also at other positions. This may be done using a rear-side etching mask adapted therefor. In this way, for example, it is possible to form separate carrier sections that comprise a rear-side depression, a stepped configuration or a smaller thickness in comparison with other carrier sections. 
     In a further embodiment, the arranging of the optoelectronic semiconductor chips and carrier sections may be carried out before the rear-side removal of metal carrier material, and therefore before the structuring of the carrier into separate carrier sections. In this embodiment, chip mounting of the optoelectronic semiconductor chips is therefore carried out on the prestructured metal carrier. This process may be carried out after the application of a plastic material of the plastic body on the carrier, or after the formation of the plastic body. 
     In an alternative embodiment, the arranging of the optoelectronic semiconductor chips and carrier sections is carried out after the rear-side removal of metal carrier material, and therefore after the structuring of the carrier into separate carrier sections. In this embodiment, mounting of the optoelectronic semiconductor chips is therefore carried out on separate metal carrier sections. This process may possibly be carried out after the arranging of a plastic material of the plastic body on the carrier, or after the formation of the plastic body. The arranging of optoelectronic semiconductor chips on already separated carrier sections offers the possibility of avoiding damage to semiconductor chips during the rear-side removal of carrier material. 
     In respect of the embodiment described above, the mounting of the optoelectronic semiconductor chips may be carried out on an arrangement that comprises separate metal carrier sections and the plastic body. This arrangement may form a prefabricated package, also referred to as a premolded package. 
     In a further embodiment, the optoelectronic semiconductor chips used in the method are radiation-emitting semiconductor chips. In this way, radiation-emitting optoelectronic components may be produced with the aid of the method. The semiconductor chips may for example be light-emitting diode chips, which are also referred to below as LED chips. 
     The mounting of the optoelectronic semiconductor chips may be carried out in such a way that the semiconductor chips are respectively placed on only one or on a plurality of carrier sections. In this process, the semiconductor chips may, for example, be fastened on carrier sections by adhesive bonding, soldering or sintering. If the semiconductor chips comprise one or more rear-side contacts, the semiconductor chips, or their rear-side contacts, may in this way be electrically connected to carrier sections. In a configuration of the semiconductor chips with one or more front-side contacts, it is furthermore possible to form electrical contact structures, by means of which the front-side contacts are electrically connected to carrier sections. For example, connection of bond wires or formation of metal contact layers, which are also referred to as PI (planar interconnect) contacts or RDL layers (redistribution layers), is possible. In the scope of the formation of contact layers, one or more insulating layers reaching laterally as far as the semiconductor chips may furthermore be formed with recesses in order to keep regions to be contacted of carrier sections free. The contact layers may be formed thereon. 
     In a further embodiment, the formation of the plastic body is carried out in such a way that the plastic body comprises cavities. The optoelectronic semiconductor chips are subsequently arranged on carrier sections in cavities of the plastic body. The formation of such a plastic body may be carried out with the aid of a molding process, in which a plastic material is applied on the prestructured metal carrier by using a molding tool. For example, a reflective plastic material may be used. Such a plastic material may contain reflective particles and have a white color. It is also possible to use a black plastic material. By means of the cavities of the plastic body, carrier sections are at least partially exposed so that optoelectronic semiconductor chips may be arranged on them. The cavities may have a cross-sectional shape widening in the direction of a front side of the optoelectronic components to be produced, for example with oblique side walls. In this way, the cavities may be used as reflectors in the optoelectronic components. During the singulation, the plastic body may be subdivided into plastic package bodies comprising at least one cavity. 
     In a further embodiment, a filler material is introduced into cavities of the plastic body. In this way, semiconductor chips located in the cavities may be encapsulated and thereby protected against external influences. In respect of the optoelectronic, or radiation-emitting, semiconductor chips used in the method, the filler material may be a radiation-transmissive, or clear, plastic material. It is also possible to use a radiation-transmissive plastic material containing phosphor particles as the filler material. In this way, radiation conversion of the radiation emitted by at least one radiation-emitting semiconductor chip during operation may be brought about. 
     In respect of the achieving of radiation conversion, there is furthermore the possibility of using radiation-emitting semiconductor chips that already comprise a conversion element in layer form or in platelet form for radiation conversion. Furthermore, a conversion layer of this type, or a conversion element, may also be formed or arranged on semiconductor chips after the chip mounting. 
     With the aid of the method, it is possible to manufacture optoelectronic components comprising a single optoelectronic, or radiation-emitting, semiconductor chip, or components comprising a plurality of optoelectronic, or radiation-emitting, semiconductor chips. The plurality of semiconductor chips may optionally be configured for generating different light radiations. In relation to the latter variant, for example, it is possible to implement RGB components that comprise a semiconductor chip for emitting red light radiation, a semiconductor chip for emitting green light radiation and a semiconductor chip for emitting blue light radiation. Correspondingly, the chip mounting is in this carried out with red-emitting, green-emitting and blue-emitting semiconductor chips. If a plastic body comprising cavities is formed, a plurality of optoelectronic, or radiation-emitting, semiconductor chips, which form part of an optoelectronic component, may respectively be placed in a common cavity. 
     In a further embodiment, in addition to optoelectronic semiconductor chips, driver chips are arranged on carrier sections. Furthermore, the singulation is carried out in such a way that the optoelectronic components thereby formed comprise a driver chip. With the aid of the driver chips, the optoelectronic semiconductor chips of the optoelectronic components may be electrically driven. 
     The mounting of the driver chips may be carried out before or after the rear-side removal of metal carrier material. 
     Furthermore, the carrier chips and the driver chips may be mounted together with the optoelectronic semiconductor chips, or alternatively before the optoelectronic semiconductor chips. The second variant may be carried out for the purpose of providing a prefabricated package (premolded package) with driver chips, and only subsequently carrying out the mounting of the optoelectronic semiconductor chips. 
     In respect of the mounting of the driver chips, features and details described above for the optoelectronic semiconductor chips may be used accordingly. For example, the driver chips may be fastened on one or more carrier sections by adhesive bonding, soldering or sintering. The driver chips may comprise a plurality of front-side contacts. Electrical contact structures, by means of which the front-side contacts of the driver chip are electrically connected to carrier sections, may be formed, for example in the form of bond wires or metal contact layers. Electrical connections between the driver chips and optoelectronic semiconductor chips may be produced in this way. In the optoelectronic components manufactured in this way, a driver chip and an optoelectronic semiconductor chip may be electrically connected at least by means of a metal carrier section, and optionally by means of a further component part, for example a bond wire. 
     In a further embodiment, the formation of the plastic body is carried out in such a way that the driver chip is embedded in the plastic body. If the plastic body is formed with cavities, according to an alternative embodiment, the driver chips may also be arranged in cavities of the plastic body. These may be cavities that are provided only for the driver chips and not for the optoelectronic semiconductor chips. A filler material may also be introduced into such cavities. This may be a radiation-opaque plastic material. In the aforementioned embodiments, irradiation of driver chips with radiation of optoelectronic semiconductor chips, and therefore impairment of the functionality of the driver chips, may be suppressed. 
     In respect of the use of driver chips, there is the possibility of producing optoelectronic components that comprise a radiation-emitting semiconductor chip and a driver chip for driving of the radiation-emitting semiconductor chip. 
     Furthermore, it is possible to produce optoelectronic components that comprise a plurality of radiation-emitting semiconductor chips and at least one driver chip for driving of the radiation-emitting semiconductor chips. The semiconductor chips may be configured for generating different light radiations, for example a red, a green and a blue light radiation. In this configuration, the optoelectronic components may, for example, be used as intelligent RGB illumination components for the interior of motor vehicles. In this case, the components may be operated from the battery voltage of a motor vehicle. The battery voltage may be substantially higher than the forward voltage of the radiation-emitting semiconductor chips, so that a high thermal loss power may be generated. By configuration of the components with the metal carrier sections, the heat energy produced may be dissipated efficiently. 
     In a further embodiment, through-holes are formed in the metal carrier. Furthermore, the subsequent formation of the plastic body is carried out in such a way that the plastic body comprises rear-side anchoring sections arranged in the through-holes. This configuration allows anchoring and therefore reliable fastening of the plastic body on the metal carrier, and consequently also on the carrier sections which are separate after the structuring of the carrier. 
     Correspondingly, the plastic package bodies, which are obtained after the singulation, of the optoelectronic components may comprise one or more rear-side anchoring sections, with which the plastic package bodies may be anchored on separate carrier sections. During the singulation, anchoring sections of the plastic body may be severed and thereby distributed between a plurality of plastic package bodies. By the anchoring, high reliability of the method and high mechanical stability and robustness of the optoelectronic components may be achieved. 
     In respect of the embodiment described above, there is the possibility of forming through-holes in the region of depressions of the prestructured metal carrier, and therefore by rear-side removal of metal carrier material. Such through-holes may merge into the depressions. In addition or as an alternative, through-holes may also be provided inside the protruding carrier sections of the prestructured carrier. This may be done by front-side and rear-side removal of carrier material. In this case, the front-side removal of carrier material may be carried out in the scope of formation of the depressions. The removal of carrier material may respectively be carried out by means of etching. 
     The anchoring sections may at least in part have a shape widening in the direction of the rear side of the carrier, and after the structuring of the carrier, or after the singulation, in the direction of the rear side of separate carrier sections. In this way, reliable anchoring may be achieved. This configuration may be implemented by carrying out the formation of the through-holes by means of etching, or isotropic etching. In this way, the through-holes may have a shape widening at least in part in the direction of the rear side of the carrier. The rear-side removal, or etching, of carrier material may furthermore be carried out in such a way that the through-holes have a shape widening in steps, or widening in steps relative to the depressions, in the region of the rear side of the carrier. Correspondingly, the anchoring sections may have a shape widening in steps in the region of the rear side. 
     In a further embodiment, the formation of the plastic body is carried out in such a way that the optoelectronic semiconductor chips are embedded in the plastic body. In this way as well, the semiconductor chips may be encapsulated and thereby protected against external influences. 
     For the formation of such an encapsulated plastic body, a plastic material may be arranged on the prestructured metal carrier equipped with optoelectronic semiconductor chips. The plastic material may be applied in the form of a continuous layer covering the optoelectronic semiconductor chips. To this end, for example, a molding process or a casting process may be carried out. In respect of the optoelectronic, or radiation-emitting, semiconductor chips used in the method, the plastic material may be radiation-transmissive, or clear. It is also possible for the plastic material to be radiation-transmissive and contain phosphor particles. In this way, radiation conversion of the radiation emitted by at least one radiation-emitting semiconductor chip during operation of the optoelectronic components may be brought about. 
     In respect of the embedding of the optoelectronic semiconductor chips in the plastic body, the following embodiment may furthermore be envisioned. In this case, the formation of the plastic body comprises arranging of a first and a second plastic material. The first plastic material is a reflective plastic material, and is arranged in the depressions of the prestructured carrier before the arranging of the optoelectronic semiconductor chips. In this case, the first plastic material may be flush with carrier sections protruding in the region of the front side. After the arranging of the optoelectronic semiconductor chips, the second plastic material is arranged on the first plastic material, the optoelectronic semiconductor chips and carrier sections. In this way, the optoelectronic semiconductor chips are embedded in the second plastic material. 
     In the embodiment described above, the plastic body is formed from two different plastic materials, i.e. the first and second plastic materials. Correspondingly, the plastic package bodies, obtained after the singulation, of the optoelectronic components comprise the first and second plastic materials. In this case, rear-side radiation emission during operation of the optoelectronic components may be prevented with the aid of the reflective first plastic material. The first plastic material may contain reflective particles and have a white color. The second plastic material may be radiation-transmissive, or clear. It is also possible for the second plastic material to be radiation-transmissive and contain phosphor particles, so that radiation conversion may be brought about. 
     As indicated above, in the optoelectronic components produced with the method, at least some of the metal carrier sections may protrude through on a rear side of the components. These carrier sections may form rear-side connection surfaces of the optoelectronic components, with the aid of which the components may be arranged by soldering in the scope of surface mounting on connection surfaces of a further device, for example a circuit board. For reliable surface mounting, the relevant carrier sections may furthermore be configured in such a way that defined wetting of the carrier sections with a solder may be achieved at predetermined positions. In this context, the following embodiments may be envisioned. 
     In a further embodiment, after the structuring of the metal carrier into separate carrier sections, a metal wetting layer is formed on a rear side and on side flanks of carrier sections. To this end, an etching mask (if present) still present on the rear side on carrier sections may initially be removed, and subsequently, or after additional cleaning of the carrier sections, the formation of the metal wetting layer may be carried out by using at least one metallization method. These processes may be carried out before the singulation. The configuration of carrier sections with a wetting layer present on a rear side and on side flanks makes multiside wetting of the carrier sections with a solder possible over a relatively large wetting area. In this way, a high shear strength of the surface-mounted optoelectronic components may be achieved. Furthermore, solder control is possible. 
     In an alternative embodiment, after the structuring of the metal carrier into separate carrier sections, an antiwetting layer is applied on side flanks and a metal wetting layer is applied on a rear side of carrier sections. The antiwetting layer is a layer on which no or only slight wetting with a solder can take place. To this end, an etching mask (if present) still present on the rear side on carrier sections may initially be removed, and subsequently, or after additional cleaning of the carrier sections, the antiwetting layer may be formed on side flanks and on a rear side of carrier sections. To this end, a metal layer, for example a nickel layer) may be formed by a metallization method on the relevant carrier sections and subsequently oxidized. The antiwetting layer thereby formed may subsequently be removed at least partially on the rear side of the carrier sections, for example mechanically by means of grinding or lapping. Following this, the metal wetting layer may be formed on the rear side of the carrier sections by using at least one metallization method. In this configuration, merely rear-side planar wetting of carrier layers with a solder may be brought about in a controlled way. This provides the possibility of providing small carrier sections and small distances between carrier sections, and consequently of producing optoelectronic components with small dimensions. 
     According to one aspect of the invention, an optoelectronic component is provided. The optoelectronic component comprises a plurality of separate metal carrier sections, a plastic package body adjoining the carrier sections and at least one optoelectronic semiconductor chip. The optoelectronic semiconductor chip is arranged on at least one carrier section. A circumferential lateral surface of the optoelectronic component is formed by the plastic package body. 
     The optoelectronic component comprises a lateral surface formed by the plastic package body. There is therefore no metal material on the lateral surface. The optoelectronic component may be produced according to the method described above or according to one or more of the above-described embodiments of the method. Some or several of the embodiments and features mentioned below may therefore be present in the optoelectronic component. 
     The optoelectronic component may be a surface-mountable component. The component may be a QFN component. A rear side of the component, which may be formed by the plastic package body and the metal carrier sections, may be structured and nonplanar. At least some of the carrier sections may protrude on the rear side. The carrier sections protruding on the rear side may form rear-side connection surfaces of the component. The carrier sections, or at least some of the carrier sections, may also comprise side flanks with two curved partial flanks forming a common edge. 
     With reference to the structured rear side, the carrier sections may protrude relative to the plastic package body, or plastic material of the plastic package body. The overhang may, for example, lie in the two-figure micrometer range. For example, an overhang in the range of 50 μm is conceivable. Other overhangs, for example in the range of 20 μm or 30 μm, are also possible. 
     At least some of the metal carrier sections may comprise a metal wetting layer on a rear side and on side flanks. It is also possible for at least some of the metal carrier sections to comprise an antiwetting layer on side flanks. These carrier sections may furthermore comprise a metal wetting layer on a rear side. In this case, the connection surfaces of the optoelectronic component may be formed by the wetting layers of the carrier sections. 
     The at least one optoelectronic semiconductor chip may be a radiation-emitting semiconductor chip, or an LED chip. The optoelectronic component may be an RGB component comprising a red-emitting, a green-emitting and a blue-emitting semiconductor chip. 
     The plastic package body may be formed from a plastic material, for example a white reflective or a black plastic material. A front side of the optoelectronic component may be formed at least in part by the plastic package body. 
     In a further embodiment, the plastic package body comprises a cavity in which the at least one optoelectronic semiconductor chip is arranged. The cavity may be filled with a filler material, which may be radiation-transmissive and may optionally contain phosphor particles. 
     In a further embodiment, the at least one optoelectronic semiconductor chip is embedded in the plastic package body. In this case, the plastic package body may at least in part be formed from a radiation-transmissive plastic material optionally containing phosphor particles. Furthermore, the plastic package body may be formed from a first and a second plastic material. The first plastic material may be a reflective plastic material and being located laterally next to and between the carrier sections. In this case, the first plastic material may be flush with front sides of the carrier sections. The second plastic material may be arranged on the first plastic material, the carrier sections and the at least one optoelectronic semiconductor chip, so that the semiconductor chip is embedded in the second plastic material. The second plastic material may be radiation-transmissive and optionally contain phosphor particles. 
     In a further embodiment, the plastic package material comprises at least one rear-side anchoring section. The anchoring section may be flush on the rear side with at least one metal carrier section, or at least with a rear-side connection surface formed by a carrier section. The anchoring section may be laterally adjoining at least one carrier section. The anchoring section may furthermore be located at the edge of the component, or in a region between a plurality of metal carrier sections of the component. A position inside the carrier section is also possible. The anchoring section may at least in part have a shape widening in the direction of the rear side of the component. A configuration in which the anchoring section has a shape projecting in steps in the region of the rear side is also possible. In a configuration of the plastic package material comprising a plurality of anchoring sections, these may be present laterally with respect to and/or inside one or more carrier sections. 
     In a further embodiment, the optoelectronic semiconductor chip comprises a driver chip for electrical driving of the at least one optoelectronic semiconductor chip. The driver chip may be arranged on at least one carrier section. The driver chip may be embedded in the plastic package body or be arranged in a cavity, provided specifically for the driver chip, of the plastic package body. This cavity may also be filled with a filler material, which may be radiation-transmissive. 
     The driver chip and the at least one optoelectronic semiconductor chip of the optoelectronic component may furthermore be electrically connected at least by means of a metal carrier section, and optionally a further component part, for example a bond wire. The relevant carrier section may in part be exposed by means of a cavity, in which the optoelectronic semiconductor chip may be located, of a plastic package body of the component. 
     It is to be pointed out that aspects and details mentioned in relation to the production method may also be used correspondingly for the optoelectronic component, and aspects and details mentioned in relation to the optoelectronic component may also be used for the production method. 
     The configurations and refinements of the invention, which are explained above and/or presented in the dependent claims, may—except for example in cases of unique dependencies or incompatible alternatives—be used individually but also in any desired combination with each other. 
    
    
     
       The above-described properties, features and advantages of this invention, as well as the way in which they are achieved, will become more clearly and readily comprehensible in conjunction with the following description of the exemplary embodiments, which will be explained in more detail in connection with the schematic drawings, in which: 
         FIGS. 1 to 10  show a method sequence for the production of optoelectronic components with the aid of lateral representations and plan representations, wherein a metal layer is prestructured, a plastic body comprising cavities is formed, optoelectronic semiconductor chips are arranged on carrier sections in cavities, the cavities are filled, the carrier is structured, and a singulation process is carried out; 
         FIGS. 11 and 12  show a lateral representation and a plan representation of an optoelectronic component produced by the method sequence of  FIGS. 1 to 10 ; 
         FIG. 13  shows a lateral representation of a prefabricated package; 
         FIGS. 14 to 20  show a further method sequence for the production of optoelectronic components with the aid of lateral representations and plan representations, wherein the optoelectronic components comprise anchoring structures; 
         FIG. 21  shows a plan representation of an optoelectronic component produced by the method sequence of  FIGS. 14 to 20 ; 
         FIG. 22  shows a lateral representation of a metal carrier comprising a plastic body and anchoring structures; 
         FIGS. 23 to 28  show a further method sequence for the production of optoelectronic components with the aid of lateral representations and plan representations, wherein the optoelectronic components comprise an optoelectronic semiconductor chip and a driver chip; 
         FIG. 29  shows a lateral representation of a prefabricated package comprising a driver chip; 
         FIG. 30  shows a plan representation of a prestructured carrier for producing an optoelectronic component comprising three optoelectronic semiconductor chips and a driver chip; 
         FIG. 31  shows a plan representation of an optoelectronic component comprising three optoelectronic semiconductor chips and a driver chip; 
         FIG. 32  shows a rear-side representation of the optoelectronic component of  FIG. 31 ; 
         FIGS. 33 to 39  show a further method sequence for the production of optoelectronic components with the aid of lateral representations and plan representations, wherein a metal carrier is prestructured, optoelectronic semiconductor chips are arranged on carrier sections, a plastic body encapsulating the semiconductor chips is formed, the carrier is structured, and a singulationprocess is carried out; 
         FIGS. 40 and 41  show a lateral representation and a plan representation of an optoelectronic component produced by the method sequence of  FIGS. 33 to 39 ; 
         FIGS. 42 and 43  show a lateral representation and a plan representation of a further optoelectronic component; 
         FIG. 44  shows a plan representation of a metal carrier comprising optoelectronic semiconductor chips, a plastic body and anchoring structures; 
         FIG. 45  shows a lateral representation of the carrier and of the plastic body of  FIG. 44  in the region of an anchoring structure; 
         FIGS. 46 to 49  show a further method sequence for the production of optoelectronic components with the aid of lateral representations, wherein a plastic body comprising a first and a second plastic material is formed; 
         FIG. 50  shows a lateral representation of an optoelectronic component produced by the method sequence of  FIGS. 46 to 49 ; 
         FIG. 51  shows a lateral representation of a further optoelectronic component; 
         FIGS. 52 to 53  show a method sequence for the production of optoelectronic components with the aid of lateral representations, wherein carrier sections comprising a wetting layer are formed; 
         FIG. 54  shows a lateral representation of an optoelectronic component which comprises carrier sections comprising a wetting layer and is arranged on a circuit board; 
         FIGS. 55 to 57  show a method sequence for the production of optoelectronic components with the aid of lateral representations, wherein metal carrier sections comprising an antiwetting layer and a wetting layer are formed; 
         FIG. 58  shows a lateral representation of an optoelectronic component which comprises carrier sections comprising an antiwetting layer and a wetting layer and is arranged on a circuit board; 
         FIGS. 59 and 60  show a lateral representation and a plan representation of an optoelectronic component comprising three optoelectronic semiconductor chips; and 
         FIGS. 61 and 62  show a lateral representation and a plan representation of a further optoelectronic component comprising three optoelectronic semiconductor chips. 
     
    
    
     With the aid of the following figures, possible configurations of radiation-emitting optoelectronic components  100  and of associated production methods will be described. The optoelectronic components  100  are surface-mountable QFN (Quad Flat No Leads) components. In the scope of production, processes known from semiconductor technology and from the manufacturer of optoelectronic components may be carried out, and materials that are conventional in these fields may be used, so that this will only be partially discussed. In the same way, in addition to the processes shown and described, further processes may be carried out and the components  100  may be manufactured with further component parts and structures in addition to the component parts shown and described. 
     It is to be pointed out that the figures are merely schematic in nature and not true to scale. The component parts and structures shown in the figures may therefore be represented exaggeratedly large or reduced in size. The method sequences explained below are represented in a detail in the figures. The parts respectively shown may be repeated many times. Some of the figures show separating lines  290 , along which a component panel is provided at the end of the method. With the aid of the separating lines  290 , the situations previously existing in relation to the respective components  100  become clear. The plan representations in part contain section lines that relate to section planes of the associated lateral sectional representations. In respect of the plan representations, it is furthermore to be pointed out that concealed parts and structures are sometimes indicated with the aid of dashed lines. 
     With the aid of lateral sectional representations and plan representations,  FIGS. 1 to 10  show a possible method for the common production of radiation-emitting optoelectronic components  100 . In the method, as shown in  FIG. 1 , a plate-shaped or strip-shaped metal carrier  110  is provided. The carrier  110  may, for example, be made from copper and have a thickness  210  of for example 0.15 mm. The carrier  110  comprises two opposite main sides  111 ,  112 , i.e. a front side  111  and a rear side  112 . 
     As is furthermore represented in  FIG. 1 , the metal carrier  110  provided comprises a front-side etching mask  141  and a rear-side etching mask  142 . The two etching masks  141 ,  142  are implemented in the form of structured coatings of the carrier  110  and comprise layer sections arranged next to one another, with which regions of the front side  111  and of the rear side  112  of the carrier  110  are covered. In this way, selective etching removal at predetermined positions of the front side  111  and rear side  112  of the carrier  110  can be achieved in etching processes subsequently carried out. The etching masks  141 ,  142  have opening widths and distances  241 ,  242  between the layer sections that may be at least 0.1 mm. Smaller distances  241 ,  242  of, for example, at least 0.025 mm are also possible. In this case, the carrier  110  may have a thickness  210  smaller than the aforementioned thickness  210 , of for example 0.05 mm. 
     The etching masks  141 ,  142  are metal etching masks, which may be formed by carrying out at least one metallization method (plating) on the metal carrier  110 . The etching masks  141 ,  142 , or their layer sections, may for example be implemented in the form of layer stacks consisting of NiAu, NiPdAu or NiAg. Before the metallization, regions of the front side  111  and rear side  112  of the carrier  110 , in which metallization is not intended to take place, may be covered by forming a photoresist mask in the form of a structured photoresist layer. After the metallization, the photoresist masks may be removed (respectively not shown). 
     In the present method sequence, the etching masks  141 ,  142  are not removed from the carrier  110 , and still remain in the optoelectronic components  100  produced. The etching masks  141 ,  142  are therefore regarded below as an integral part of the carrier  110 , and therefore also of the carrier sections  121 ,  122  obtained later. In this sense, the front side  111  and the rear side  112  of the carrier  110  are in part formed by the etching masks  141 ,  142  themselves. Furthermore, the etching masks  141 ,  142  form contactable coatings of the carrier  110  and of the carrier sections  121 ,  122  obtained later, which are suitable for example for soldering and connection of contact structures, for example bond wires  180 . 
     After the provision of the metal carrier  110  with the etching masks  141 ,  142 , as is shown in  FIGS. 2 and 7 , prestructuring of the carrier  110  is carried out by front-side removal of metal carrier material. To this end, front-side isotropic etching of the carrier  110  is carried out. This may be done by a wet chemical etching method. In this step, the carrier  110  is etched at those positions that are not covered with the front-side etching mask  141 . The prestructured metal carrier  110  obtained after the etching comprises carrier sections  121 ,  122  protruding in the region of the front side  111  and depressions  130  present between them. The protruding carrier sections  121 ,  122  are still held together by rear-side carrier material. The carrier sections  121 ,  122  are also enclosed circumferentially by the depressions  130 . In this case, the depressions  130  merge into one another and form a continuous grid-shaped trench structure. 
     As is shown in  FIG. 7 , the carrier sections  121 ,  122  are in the present case formed with different lateral dimensions. For each optoelectronic component  100  to be produced, a carrier section  121  and a smaller carrier section  122  is produced. 
     Because of the isotropic etching, the depressions  130  have a round cross-sectional profile, as is shown in  FIG. 2 . The depressions  130  may also comprise a slight lateral undercut. The front-side etching of the metal carrier  110  may be carried out to such an extent that the depressions  130  have a depth  230  that may be two-thirds of the thickness  210  of the original carrier  110  provided (cf.  FIGS. 1 and 2 ). A different depth  230  is also possible, which may for example be one half of the thickness  210  of the carrier  110 . 
     Subsequently, as is represented in  FIGS. 3 and 8 , a plastic body  150  is formed on the front side  111  of the prestructured metal carrier  110 . The plastic body  150  comprises cavities  156 , by means of which the carrier  110 , or its etching mask layer sections  141 , are in part exposed on the front side. For the formation of the plastic body  150 , a plastic material is applied (not represented) on the carrier  110  by carrying out a molding process with the aid of a molding tool. 
     The plastic material used for the plastic body  150  may, for example, be a thermoset or a thermoplastic. It may furthermore be a reflective plastic material, which may contain (not represented) reflective particles embedded in the plastic material, and which may therefore have a white color. As an alternative, the plastic material may have a black color. 
     During the formation of the plastic body  150 , the plastic material is arranged in the depressions  130  of the metal carrier  110 , and at the edge of the cavities  156  in part also on the carrier sections  121 ,  122  (cf.  FIGS. 3 and 8 ). Because of the lateral undercut of the depressions  130 , interlocking is possible between the carrier  110  and the plastic body  150 . 
     The plastic body  150  comprises a separate cavity  156  for each optoelectronic component  100  to be produced. By means of the cavities  156 , a carrier section  121  and a carrier section  122  are therefore respectively exposed in part on the front side. In the region of the cavities  156 , the depressions  130  present between the carrier sections  121 , 122  are filled with the plastic material of the plastic body  150  in such a way that the plastic body  150  is flush at this position with the metal carrier  110 , or with its front-side etching mask  141 . In this way, as is shown in  FIG. 3 , the cavities  156  comprise a planar bottom. With the aid of  FIG. 3 , it may furthermore be seen that the cavities  156  have a cross-sectional shape widening in the direction of a front side of the optoelectronic components  100  to be produced, with side walls extending obliquely with respect to the carrier  110 . By virtue of this configuration, the cavities  156  may be used as reflectors for the components  100 . 
     After the formation of the plastic body  150 , as is represented in  FIGS. 4 and 9 , radiation-emitting optoelectronic semiconductor chips  170  are arranged in the cavities  156  of the plastic body  150  on the front side  111  of the metal carrier  110  and electrically connected to the carrier  110 . A single semiconductor chip  170  is mounted in each cavity  156 . 
     The semiconductor chips  170  used may, for example, be LED chips. Furthermore, in the present method sequence, a configuration is used in which the semiconductor chips  170  comprise a front-side contact  175  and a rear-side contact (not shown). The front-side contact  175  may, as is represented in  FIG. 9 , comprise one circular contact section and one linear contact section extending therefrom. 
     During the chip mounting, the radiation-emitting semiconductor chips  170  are placed on the carrier sections  121  of the carrier  110 . In this case, the semiconductor chips  170  may be fastened on the carrier sections  121  for example by adhesive bonding, soldering or sintering. In this way, the rear-side contacts of the semiconductor chips  170  may be electrically connected to the carrier sections  121  by an electrically conductive connecting material (adhesive, solder or sintering paste) (not shown) used in the respective process. The front-side contacts  175  of the semiconductor chips  170  are electrically connected by contact structures in the form of bond wires  180  to the respectively neighboring carrier sections  122  accessible via the same cavities  156 . In this case, the bond wires  180  are connected to the circular contact sections of the chip contacts  175 . 
     After the chip mounting, the cavities  156  of the plastic body  150 , as is likewise shown in  FIG. 4 , are filled with a filler material  161 . This is carried out in such a way that the filler material  161  is flush with the plastic body  150  on the front side. With the aid of the filler material  161 , the radiation-emitting semiconductor chips  170  located in the cavities  156  may be encapsulated and therefore protected against external influences. The introduction of the filler material  161  into the cavities  156  may, for example, be carried out with the aid of a dispenser (this is not represented). 
     The filler material  161  used may be a radiation-transmissive, or clear, plastic material, for example a silicone material or an epoxide material. Optionally, the filler material  161  may additionally contain phosphor particles (this is not represented). In this way, radiation conversion of light radiation emitted by the semiconductor chips  170  during operation may be brought about. In the plan representation of  FIG. 9 , and in subsequent plan representations, the filler material  161  is represented as a clear material. 
     Following this, as is represented in  FIG. 5 , structuring of the carrier  110  is carried out by rear-side removal of metal carrier material in the region of the depressions  130  until the plastic body  150  is reached. During this process, the plastic body  150  is partially exposed on the rear side, and the carrier  110  is structured into metal carrier sections  121 ,  122  which are separate, i.e. no longer connected to one another by metal carrier material. In this case, the carrier sections  121 ,  122  previously protruding in the region of the frontside  111  of the carrier  110  merge into the separate carrier sections  121 ,  122 , or in other words the carrier sections  121 ,  122  previously connected to one another are separated from one another. In accordance with the prestructuring, during the structuring of the carrier  110  a separate carrier section  121  and a smaller carrier section  122  are produced for each optoelectronic component  100  to be produced. In this state, the separate carrier sections  121 ,  122  are held together by the plastic body  150  and the filler material  161 . 
     In order to structure the metal carrier  110  into the separate carrier sections  121 ,  122 , rear-side isotropic etching of the carrier  110  is carried out. This may likewise be carried out by a wet chemical etching method. In this step, the carrier  110  is etched at those positions that are not covered with the rear-side etching mask  142 . Because of the isotropic etching, the carrier sections  121 ,  122  have in cross section, as is represented in  FIG. 5 , side flanks  131  with two curved partial flanks forming a common laterally protruding edge. 
     During the structuring of the metal carrier  110 , carrier material may be etched on the rear side not only in the region of the depressions  130  but also at other positions. In the present method sequence, this is illustrated by way of example in relation to the carrier section  121  shown in  FIG. 5 . In this case, the rear-side etching mask  142  comprises an opening in the region of the carrier section  121 . The result of this is that a depression  132  is produced during the rear-side etching. Because of the isotropic etching, the rear-side depression  132  has a round cross-sectional profile. Such a depression  132  may be provided in all the carrier sections  121 . 
     The present component panel obtained after the structuring of the metal carrier  110  is subsequently, as is represented in  FIGS. 6 and 10 , singulated into separate optoelectronic components  100 . During this process, severing of the plastic body  150  is carried out between separate carrier sections  121 ,  122  along the separating lines  290 . In this way, the plastic body  150  is separated into plastic package bodies  155  belonging to the individual components  100 . The severing of the plastic body  150  may be carried out mechanically, for example by means of sawing (this is not represented). 
     An individual radiation-emitting optoelectronic component  100 , which has been produced with the aid of the method of  FIGS. 1 to 10 , is depicted in a lateral sectional representation and in a plan representation in  FIGS. 11 and 12 . The component  100  comprises two separate metal carrier sections  121 ,  122  that can be contacted on the rear side, a plastic package body  155  adjacent and connected to the carrier sections  121 ,  122  and comprising a cavity  156 , and a single radiation-emitting semiconductor chip  170  located in the cavity  156 . The cavity  156  is filled with a filler material  161 . The semiconductor chip  170  is arranged on and electrically connected to the carrier section  121 . By means of a bond wire  180 , the semiconductor chip  170  is electrically connected to the other carrier section  122 . In this way, the semiconductor chip  170  can be supplied with electrical energy via the carrier sections  121 ,  122  during operation of the component  100 . 
     With the aid of  FIG. 11 , it may furthermore be seen that the optoelectronic component  100  comprises a structured rear side  102 , which is formed by the plastic package body  155  and the carrier sections  121 ,  122 . The carrier sections  121 ,  122  protrude on the rear side relative to the plastic package body  155 . In this case, the overhang may, for example, lie in the two-figure micrometer range. The overhang may, for example, be 50 μm. Other overhangs, for example in the range of 20 μm or 30 μm, are also possible. The carrier sections  121 ,  122 , or their etching mask layer sections  142 , furthermore form rear-side connection surfaces  135  of the component  100 , with the aid of which the component  100  may be mounted in the scope of surface mounting (SMT, Surface Mounting Technology) on a further device (this is not represented). The component  100  comprises a circumferential lateral surface  105 , which is composed of all the lateral outer sides of the component  100  and which is formed exclusively by the plastic package body  155 . A front side  101  of the component  100  is formed by the plastic package body  155  and the filler material  161 . During operation of the component  100  light radiation may be omitted on the front side through the filler material  161 . 
     The method explained with the aid of  FIGS. 1 to 10  may be carried out economically and with high reliability. This results from the use of the metal carrier  110 , which may be distinguished by high stability and robustness in comparison with a conventional lead frame. The singulation, during which only the plastic body  150  is severed, may also be carried out simply and economically. The method furthermore offers the possibility of manufacturing optoelectronic components  100  having compact dimensions. Because of the carrier sections  121 ,  122 , the optoelectronic components  100  may furthermore be distinguished by efficient dissipation of heat and a low thermal resistance. Because of the lateral surface  105  formed only by the plastic package body  155 , the components  100  may furthermore have high robustness. 
     Possible variants and modifications that may be envisioned in relation to the method sequence explained above and optoelectronic components  100  thereby produced will be described below. Corresponding method steps and features, as well as component parts that are the same or have the same effect, will not be explained again in detail below. For details thereof, reference is instead made to the description above. Furthermore, aspects and details that are mentioned in relation to one configuration may also be used in relation to another configuration, and features of two or more configurations may be combined with one another. 
     Instead of the optoelectronic semiconductor chips  170  shown in the preceding figures, comprising a front-side contact  175  and a rear-side contact, other designs may be used. Possible, for example, are semiconductor chips  170  comprising two front-side contacts  175 ,  176 , such as used in method sequences explained below (cf. for example  FIG. 34 ). In this case, the two front-side contacts  175 ,  176  may be electrically connected to metal carrier sections with the aid of bond wires  180 . Furthermore, it is also possible to use optoelectronic semiconductor chips comprising two rear-side contacts, which may be implemented in the form of so-called flip-chips. Such semiconductor chips may be mounted on two carrier sections by adhesive bonding, soldering or sintering, so that at the same time the rear-side contacts may be electrically connected respectively to one of the carrier sections (this is not represented). 
     A further modification consists in connecting front-side contacts  175 ,  176  of semiconductor chips  170  to metallic carrier sections by means of other contact structures rather than by means of bond wires  180 . One example is metallic contact layers, which are also referred to as PI contacts (Planar Interconnect) or RDL layers (Redistribution Layer). With regard to such contact structures, one or more insulating layers reaching laterally as far as the semiconductor chips  170  may be formed with recesses in order to keep regions to be contacted of carrier sections free. The contact layers may subsequently be formed in order to electrically connect the front-side chip contacts  175 ,  176  to the carrier sections (not illustrated). 
     A further variant consists in carrying out the method steps in a different order. For example, it is conceivable to carry out chip mounting not before but after the rear-side etching of a metal carrier  110  in order to structure the latter into separate carrier sections, and consequently to arrange semiconductor chips on already separated metal carrier sections. This procedure makes it possible to avoid damage to semiconductor chips possibly occurring during the rear-side etching. In this way, the chip mounting may be carried out on a prefabricated package which may also be referred to as a premolded package or a semifinished product. 
     For exemplary illustration,  FIG. 13  shows such a prefabricated package  200  in a lateral sectional representation. The prefabricated package  200  comprises separate metal carrier sections  121 ,  122  and a plastic body  150  connected to the carrier sections  121 ,  122  comprising cavities  156 . The production of the prefabricated package  200  may initially be carried out in a similar way to the method explained above, i.e. a metal carrier  110  comprising etching masks  141 ,  142  is provided (cf.  FIG. 1 ), the carrier  110  is prestructured by front-side etching and consequently comprises carrier sections  121 ,  122  protruding in the region of the front side  111  and depressions  130  between them (cf.  FIGS. 2 and 7 ), and the plastic body  150  is formed with cavities  156  on the carrier  110  (cf.  FIGS. 3 and 8 ). Subsequently, the carrier  110  is structured into separate carrier sections  121 ,  122  by rear-side etching in order to provide the prefabricated package  200  shown in  FIG. 13 . The further production of optoelectronic components  100  may likewise be carried out in accordance with the method explained above, i.e. optoelectronic semiconductor chips  170  are mounted on carrier sections  121  in the cavities  156  of the plastic body  150  and connected to carrier sections  122  by means of bond wires  180 , the cavities  156  are filled with a filler material  161 , and the present component panel subsequently obtained is singulated into separate optoelectronic components  100  by severing the plastic body  150  along the separating lines  290  between carrier sections  121 ,  122  (cf.  FIGS. 5, 6 and 10 ). 
     As indicated above, the depressions  130  produced by the front-side etching of a carrier  110  may comprise an undercut, so that interlocking can be brought about between the carrier  110  and a plastic body  150 . There is, however, furthermore the possibility of providing anchoring in a controlled way. 
     In order to illustrate this aspect,  FIGS. 14 to 20  show a further method sequence for the production of radiation-emitting optoelectronic components  100  with the aid of lateral sectional representations and plan representations. It essentially corresponds to the method sequence of  FIGS. 1 to 10 . In the method, as is shown in  FIGS. 14 and 19 , a prestructured metal carrier  110  comprising front-side and rear-side etching masks  141 ,  142  is provided. The carrier  110  again comprises carrier sections  121 ,  122  protruding in the region of the front side  111  and depressions  130  between them. In addition, the carrier  110  comprises through-holes  133  present in the region of the rear side  112  and merging into depressions  130 . In the configuration shown, three through-holes  133  are respectively located between neighboring carrier sections  121 ,  122  provided for different components  100  to be produced, and therefore in the region of separating lines  290  (cf.  FIG. 19 ). 
     The through-holes  133  may be produced by rear-side removal of metal carrier material by means of isotropic etching. In this way, as is shown in  FIG. 14 , the through-holes  133  may have a round cross-sectional profile. It is possible to prestructure the carrier  110  in the manner described above and subsequently to form the through-holes  133 . As an alternative, rear-side recesses may initially be produced in the carrier  110  and the prestructuring of the carrier  110  may subsequently be carried out, so that the through-holes  133  may be obtained from the recesses. 
     Subsequently, as is shown in  FIG. 15 , a plastic body  150  comprising cavities  156  is formed on the prestructured metal carrier  110 . In this step, which is carried out with the aid of a molding process, the plastic material of the plastic body  150  is arranged in the depressions  130 , in the through-holes  133  and at the edge of the cavities  156  in part on the carrier sections  121 ,  122 . In this case, the plastic material formed in the through-holes  133  forms anchoring sections  158  of the plastic body  150  with which the plastic body  150  is anchored on the carrier  110 . The anchoring sections  158  are flush on the rear side with the carrier  110  or with its etching mask  142 . Because of the round cross-sectional profile of the through-holes  133 , the anchoring sections  158  have a cross-sectional shape widening in the direction of the rear side  112  carrier  110 . This configuration allows reliable anchoring of the plastic body  150 . 
     Following this, steps are carried out such as arranging a radiation-emitting optoelectronic semiconductor chip  170  on carrier sections  121  in the cavities  156  of the plastic body  150 , connecting the semiconductor chip  170  on neighboring carrier sections  122  by means of bond wires  180 , filling the cavities  156  of the plastic body  150  with a filler material  161  (cf.  FIG. 16 ), and rear-side etching of the carrier  110  so that the carrier  110  is structured into separate carrier sections  121 ,  122  (cf.  FIG. 17 ). The component panel is subsequently, as is shown in  FIGS. 18 and 20 , singulated into separate optoelectronic components  100  by severing the plastic body  150  the along separating lines  290  between carrier sections  121 ,  122 . During this process, the plastic body  150  is separated into plastic package bodies  155  belonging to the individual components  100 . The anchoring sections  158 , which are located in the region of separating lines  290 , are also severed, and thereby in the present case distributed respectively between two plastic package bodies  155 . 
     The optoelectronic components  100  produced in this way, or their plastic package bodies  155 , comprise additional anchoring sections  158 , which are engaged with the carrier sections  121 ,  122 , at their edge. The anchoring sections  158 , which have a cross-sectional shape widening in the direction of the rear side  102  of the component  100 , are respectively laterally adjoining a carrier section  121 ,  122  and are flush on the rear side with the relevant carrier section  121 ,  122 , or with a connection surface  135  thereby formed. An individual optoelectronic component  100  produced in this way is depicted in the plan representation of  FIG. 21 . Because of the anchoring sections  158 , the component  100  may have high mechanical stability. 
     In respect of the provision of anchoring sections  158 , modifications may correspondingly be envisioned. This relates, for example, to the location of the anchoring sections  158 . For example, the production of optoelectronic components  100  may be carried out in such a way that, in contrast to  FIG. 21 , such anchoring sections  158  are present not only in the region of short sides, but in addition or as an alternative in the region of long sides of the components  100 . Furthermore, anchoring sections  158  may be provided not only at the edge, but also between carrier sections of components  100  (this is not represented). Further possible positions are the corners of components  100  or even inside carrier sections, as is the case in method sequences explained below (cf.  FIGS. 26 and 44 ). 
       FIG. 22  shows, with the aid of a lateral sectional representation of a prestructured metal carrier  110  provided with a plastic body  150 , a further possible configuration that is conceivable in relation to anchoring sections  158 . In this case, the carrier  110  comprises rear-side through-holes  133  that merge into the depressions  130  and have a shape projecting in steps relative to the depressions  130 . Correspondingly, the anchoring sections  158  arranged in the through-holes  133  have a shape projecting in steps relative to subsections of the plastic body  150  that are located in the depressions  130 . This configuration allows stable anchoring of the plastic body  150 . During singulation carried out at the end of the method, such anchoring sections  158  may correspondingly be severed and thereby distributed between a plurality of, or two, plastic package bodies  155 . The anchoring sections  158  thereby formed of the plastic package bodies  155  may in this case respectively have a shape projecting laterally in the direction of a carrier section  121 ,  122  (this is not represented). 
     Prefabricated packages  200 , which may be produced by providing and prestructuring a metal carrier  110 , forming a plastic body  150  and structuring the carrier  110  into separate carrier sections, may correspondingly be provided with anchoring sections  158  of the plastic body  150 . Furthermore, optoelectronic components  100  that additionally comprise a driver chip  190  may be manufactured. With the aid of the driver chips  190 , which comprise an integrated circuit and may therefore also be referred to as ICs (Integrated Circuits) the optoelectronic semiconductor chips  170  of the components  100  may be electrically driven. In order to implement such components  100 , the chip mounting additionally comprises mounting of driver chips  190  on corresponding carrier sections. 
       FIGS. 23 to 28  show, with the aid of lateral sectional representations and plan representations, a further method sequence for the production of radiation-emitting optoelectronic components  100 , in which the two aspects mentioned above may be used together. In the method, as is shown in  FIGS. 23 and 26 , a prefabricated package  200  is provided, which comprises separate metal carrier sections  121 ,  122 ,  123 ,  124  and a plastic body  150  connected thereto and comprising cavities  156 ,  157 . In the configuration shown, the package  200  comprises, for each component  100  to be produced, a carrier section  121 , a carrier section  122 , a carrier section  123  and four carrier sections  124 . The plastic body  150  comprises two cavities  156 ,  157  for each component  100  to be produced, the carrier sections  121 ,  122  being exposed on the front side in part by means of the cavity  156 , and the carrier sections  121 ,  123 ,  124  being exposed on the front side in part by means of the other cavity  157 . The prefabricated package  200 , or its plastic body  150 , furthermore comprises anchoring sections  158 . These include anchoring sections  158  that are located between neighboring carrier sections  122 ,  123  provided for different components  100  to be produced, and therefore in the region of separating lines  290 , as well as anchoring sections  158  that are respectively arranged inside the carrier sections  121 . 
     The production (not represented) of the prefabricated package  200  shown in  FIGS. 23 and 26  may be carried out by providing a prestructured metal carrier  110  that comprises masks  141 ,  142 , carrier sections  121 ,  122 ,  123 ,  124  protruding in the region of the front side  111 , depressions  130  enclosing the carrier sections  121 ,  122 ,  123 ,  124  circumferentially, and through-holes  133 . In this case, the through-holes  133  provided for the production of anchoring sections  158  in the region of the separating lines  290  merge into the depressions  130 . These through-holes  133  may be produced by rear-side etching of the carrier  110 . The other through-holes  133 , provided for the production of anchoring sections  158  inside the carrier sections  121 , may be produced by front-side and rear-side etching of the carrier  110 . In this case, the depressions  130  enclosing the protruding carrier sections  121 ,  122 ,  123 ,  124  may be formed simultaneously by the front-side etching. Subsequently, the plastic body  150  with the cavities  156 ,  157  may be formed on the prestructured carrier  110 . The anchoring sections  158  may be produced by the arranging, which takes place in this case, of the plastic material of the plastic body  150  in the through-holes  133 . In order to complete the prefabricated package  200 , the carrier  110  may be structured by rear-side etching, and the separate metal carrier sections  121 ,  122 ,  123 ,  124  may thereby be provided. 
     During the subsequent chip mounting, as is shown in  FIGS. 24 and 27  in relation to a component  100 , for each optoelectronic component  100  to be produced, a radiation-emitting optoelectronic semiconductor chip  170  is mounted on a carrier section  121  in a cavity  156  and is connected to a neighboring carrier section  122  by means of a bond wire  180 , and a driver chip  190  is mounted on a carrier section  123  and connected to neighboring carrier sections  121 ,  124  by means of bond wires  180 . In the present configuration, the driver chip  190  comprises five front-side contacts (not shown), of which one contact is connected by means of a bond wire  180  to the carrier section  121  and the other contacts are connected by means of bond wires  180  to the carrier sections  124 . In the optoelectronic components  100 , the carrier sections  124  may be used for the energy supply of the driver chip  190  and transmission of information in the form of control signals to the driver chip  190 . 
     After the chip mounting, as is likewise shown in  FIG. 24 , the cavities  156 ,  157  are filled, so that the semiconductor chips  170  and driver chips  190  are encapsulated and thereby protected against external influences. To this end, a dispenser (not shown) may be used. In relation to the cavities  156  containing the radiation-emitting semiconductor chips  170 , the filler material  161  described above is used (radiation-transmissive plastic material, which optionally contains phosphor particles). In relation to the cavities  157  containing the driver chips  190 , a different filler material  162  is used. This may, for example, be a radiation-opaque plastic material. In the plan view of  FIG. 27 , as well as in  FIG. 28 , both filler materials  161 ,  162  are represented as clear materials. 
     The present component panel obtained after the filling of the cavities  156 ,  157  is subsequently, as is shown in  FIGS. 25 and 28 , singulated into separate optoelectronic components  100  by severing the plastic body  150  along separating lines  290  between carrier sections  121 ,  122 ,  123 ,  124 . In this way, the plastic body  150  is separated into the plastic package bodies  155  belonging to the individual components  100 . Some of the anchoring sections  158 , which are located in the region of separating lines  290 , are also severed and distributed respectively between two plastic package bodies  155 . 
     The optoelectronic components  100  produced in this way comprise separate metal carrier sections  121 ,  122 ,  123 ,  124  and a plastic package body  155  comprising three anchoring sections  158  and two cavities  156 ,  157 , a radiation-emitting semiconductor chip  170  being arranged in the cavity  156  and a driver chip  190  being arranged in the other cavity  157 . By this configuration, and by the use of a radiation-opaque filler material  162  in the driver chip cavity  157 , it is possible to avoid the driver chip  190  being irradiated by light radiation generated by the semiconductor chip  170  and optionally converted. As a result of this, impairment of the functionality of the driver chip  190  can be avoided. The metal carrier sections  121 ,  122 ,  123 ,  124  form rear-side connection surfaces  135 . The driver chip  190  is electrically connected by means of a bond wire  180  to the carrier section  121 , to which the semiconductor chip  170  arranged thereon is also electrically connected. In this way, there is an indirect electrical connection between the semiconductor chip  170  and the driver chip  190 , so that the semiconductor chip  170  can be electrically driven with the aid of the driver chip  190 . 
     In respect of the use of driver chips  190 , one possible modification consists in not arranging the driver chips  190  in cavities  157  of a plastic body  150 , but instead embedding driver chips  190  in the plastic body  150  during the formation of a plastic body  150 , and thereby encapsulating them. In such a configuration, the mounting of driver chip  190  is carried out before mounting of optoelectronic semiconductor chips  170 . 
     In order to illustrate the aforementioned aspect,  FIG. 29  shows a lateral sectional representation of a further prefabricated package  200 , which represents a modification of the package  200  used in the method of  FIGS. 23 to 28 . The package  200  comprises separate metal carrier sections  121 ,  122 ,  123 ,  124 , of which only the carrier sections  121 ,  122 ,  123  are shown in  FIG. 29 . In relation to the carrier sections  121 ,  122 ,  123 ,  124  the structure is one that corresponds to  FIG. 26 . Furthermore, the package  200  comprises a plastic body  150  that, for each optoelectronic component  100  to be produced, comprises only a cavity  156  for receiving an optoelectronic semiconductor chip  170 . Furthermore, for each component  100  to be produced, the package  200  comprises a driver chip  190  premounted on the carrier section  123  and embedded in the plastic body  150 . The driver chip  190  is connected by means of bond wires  180  to the carrier section  121  and the other carrier sections  124  (not shown in  FIG. 29 ). In relation to the wiring of the driver chip  190  the configuration is one that corresponds to  FIG. 27 . 
     The production of the prefabricated package  200  of  FIG. 29  may be carried out by providing a prestructured metal carrier  110  comprising protruding carrier sections  121 ,  122 ,  123 ,  124 , depressions  130  and through-holes  133 , mounting driver chips  190  on carrier sections  123  and connecting them to carrier sections  121 ,  124  by means of bond wires  180 , forming the plastic body  150  on the carrier  110  embedding the driver chips  190 , and subsequently structuring the carrier  110  into separate carrier sections  121 ,  122 ,  123 ,  124  by rear-side etching. For the further production of optoelectronic components  100 , optoelectronic semiconductor chips  170  may be arranged on carrier sections  121  in the cavities  156  of the plastic body  150  and connected by means of bond wires  180  to carrier sections  122 , the cavities  156  may be filled, and the component panel may subsequently be singulated by severing the plastic body  150 . Optoelectronic components  100  produced in this way comprise a plastic package body  155  in which a driver chip  190  is embedded (these are respectively not represented). In this configuration, irradiation of the driver chip  190  and therefore impairment of the functionality of the driver chip  190  may also be avoided. 
     In respect of the production of optoelectronic components  100  comprising driver chips  190 , it is also possible for this to be carried out without a prefabricated package  200 . In this sense, for example, the method explained with the aid of  FIGS. 23 to 28  may be modified in such a way that structuring of a prestructured carrier  110  into separate carrier sections  121 ,  122 ,  123 ,  124  is not carried out until after the mounting of optoelectronic semiconductor chips  170  and driver chips  190  in cavities  156  or  157  of a plastic body  150  formed on the carrier  110 . In relation to  FIG. 29 , structuring of a prestructured carrier  110  into separate carrier sections  121 ,  122 ,  123 ,  124  may not be carried out until after the mounting of optoelectronic semiconductor chips  170  in cavities  156  of a plastic body  150 , the plastic body  150  being formed previously on the carrier  110  equipped with driver chips  190 . 
     It is furthermore possible to produce optoelectronic components  100  that comprise a plurality of radiation-emitting optoelectronic semiconductor chips  170  instead of a single one. The plurality of semiconductor chips  170  may be provided together in a cavity  156  in a plastic package body  155 . The plurality of semiconductor chips  170  may also be drivable separately, which may be implemented by a configuration, adapted therefor, of metal carrier sections and corresponding interconnection of the semiconductor chips  170 . In this context, configurations of components  100  may furthermore be implemented which comprise semiconductor chips  170  for generating different light radiations. These include, for example, RGB components  100  comprising three semiconductor chips  170  for generating red, green and blue light radiation. 
     In order to illustrate the aforementioned aspect,  FIG. 30  shows a plan representation of a prestructured metal carrier  110  comprising carrier sections  121 ,  122 ,  123 ,  124 ,  125 ,  126  protruding on the front side and continuous depressions  130  present between them, which is suitable for the production of optoelectronic components  100  comprising three radiation-emitting semiconductor chips  170  and a driver chip  190 .  FIG. 30  shows a detail of the carrier  110  in the region of a component  100  to be produced. An optoelectronic component  100  produced by using this carrier  110  is shown in the plan representation of  FIG. 31 . The component  100  comprises three radiation-emitting semiconductor chips  170 , which are respectively arranged on one of the carrier sections  121 ,  122 ,  123 . The three semiconductor chips  170  may be configured for the generation of red, green and blue light radiation, so that the component  100  is an RGB component. 
     The optoelectronic component  100  of  FIG. 31  furthermore comprises a driver chip  190 , which is arranged on the carrier section  125 . The driver chip  190  is connected by means of bond wires  180  to the carrier sections  126 . In this way, the driver chip  190  can be supplied with electrical energy and receive information. The driver chip  190  is furthermore connected by means of bond wires  180  to four carrier sections  121 ,  122 ,  123 ,  124 . The semiconductor chips  170  are also connected by means of bond wires  180  to the carrier sections  121 ,  122 ,  123 ,  124 . In this way, there are indirect electrical connections, implemented inter alia by means of the carrier sections  121 ,  122 ,  123 ,  124 , between the driver chip  190  and the carrier chip  170 . In this way, the semiconductor chips  170  may be electrically driven separately from one another with the aid of the driver chip  190 . 
     A further integral part of the component  100  of  FIG. 31  is a plastic package body  155 , in which the driver chip  190  is embedded. The plastic package body  155  comprises a cavity  156 , by means of which the carrier sections  121 ,  122 ,  123 ,  124  are exposed at least in part on the front side. As seen from above, the carrier sections  121 ,  122 ,  123 ,  124  are therefore located in part inside and outside the cavity  156 . The semiconductor chips  170  are arranged in the cavity  156 . The cavity  156  is furthermore filled with a radiation-transmissive, or clear, filler material  161 . 
     The optoelectronic component  100  of  FIG. 31  may be produced in a similar way to the method explained with the aid of  FIG. 29 , i.e. in that driver chips  190  are initially placed on carrier sections  125  of the prestructured carrier  110  shown as a detail in  FIG. 30  and wired. Subsequently, the plastic body  150  encapsulating the driver chips  190  and comprising cavities  156  may be formed on the carrier  110 , the carrier  110  may be structured into separate carrier sections  121 ,  122 ,  123 ,  124 ,  125 ,  126  by rear-side etching, and semiconductor chips  170  may be mounted in the cavities  156  and wired. Subsequently, the cavities  156  may be filled and singulation may be carried out (these are respectively not represented). 
       FIG. 32  shows a rear-side representation of the optoelectronic component  100  of  FIG. 31 , with the aid of which a further possible configuration may be seen in relation to removal of carrier material, carried out during the rear-side carrier etching, not only in the region of depressions  130  of the prestructured carrier  110  but also in region of carrier sections, in the present case the carrier sections  121 ,  122 ,  123 ,  124 . In  FIG. 32 , rear-side etching regions in which the relevant carrier sections  121 ,  122 ,  123 ,  124  have additionally been etched are highlighted by hatching. In this way, rear-side connection surfaces  135 , which are formed by the carrier sections  121 ,  122 ,  123  (as well as  125 ,  126 ), and which are not represented by hatching in  FIG. 32 , have a symmetrical configuration. In this way, reliable surface mounting of the component  100  is possible without displacement thereof. The carrier section  124 , which has been fully etched on the rear side, has a smaller thickness than the other carrier sections  121 ,  122 ,  123 ,  125 ,  126  and does not form a rear-side connection surface  135 . 
     The optoelectronic component  100  of  FIGS. 31, 32  may, for example, be used as an intelligent RGB illumination component and in an interior of a motor vehicle. In this case, the driver chip  190  may, for example, receive information via a data bus relating to the brightness and chronological sequence with which the semiconductor chips  170  should emit light. Furthermore, the component  100  may be operated on the battery voltage of the motor vehicle. The battery voltage may be substantially higher than the forward voltage of the semiconductor chips  170 , so that a high thermal loss power may be generated. The configuration of the component  100  with the metal carrier sections  121 ,  122 ,  123 ,  124 ,  125 ,  126  makes it possible in this context to efficiently dissipate the heat energy produced (these are respectively not represented). 
     A further method variant, which is conceivable in relation to the production of optoelectronic components  100 , consists in forming a plastic body  150  without cavities and embedding optoelectronic semiconductor chips  170  therein. In this way, the components  100  may be manufactured economically. 
     In order to illustrate the aforementioned aspects,  FIGS. 33 to 39  represent a further method sequence for the production of radiation-emitting optoelectronic components  100  with the aid of lateral sectional representations and plan representations. In the method, as is shown in  FIGS. 33 and 37 , a prestructured metal carrier  110  comprising front-side and rear-side etching masks  141 ,  142  is provided, which comprises carrier sections  121 ,  122  protruding in the region of the front side  111  and depressions  130  between them. The carrier sections  121 ,  122  have matching lateral dimensions. For each component  100  to be produced, a carrier section  121  and a carrier section  122  are provided. The prestructuring is carried out in the manner described above by front-side isotropic etching of the carrier  110  by using the etching mask  141 . 
     Following this, as is shown in  FIGS. 34 and 38 , radiation-emitting optoelectronic semiconductor chips  170  are arranged on and electrically connected to the front side  111  of the prestructured metal carrier  110 . In the present case, the semiconductor chips  170  comprise two front-side contacts  175 ,  176 . The contact  175  comprises one circular contact section and one linear contact section. The other contact  176  comprises one circular contact section and two linear contact sections. During the chip mounting, the semiconductor chips  170  are respectively fastened on two neighboring carrier sections  121 ,  122 . This process may for example be carried out by adhesive bonding, soldering or sintering. Furthermore, the front-side contacts  175 ,  176  of the semiconductor chips  170  are electrically connected by means of bond wires  180  respectively to one of the carrier sections  121 ,  122  on which the semiconductor chips  170  are located. In this case, the bond wires  180  are connected to the circular contact sections of the chip contacts  175 ,  176 . 
     Subsequently, as is likewise shown in  FIG. 34 , a plastic body  150  is formed on the front side  111  of the metal carrier  110  equipped with the semiconductor chips  170 . This is carried out in such a way that the optoelectronic semiconductor chips  170  are embedded together with bond wires  180  in the plastic body  150 . The plastic body  150  is furthermore arranged in the depressions  130  of the carrier  110 . Because of the isotropic etching, the depressions  130  may comprise an undercut, so that interlocking is possible between the carrier  110  and the plastic body  150 . 
     For the formation of the plastic body  150 , a plastic material in the form of a continuous layer covering the optoelectronic semiconductor chips  170  is applied on the carrier  110 . To this end, for example, a molding process may be carried out. Testing of the plastic material is also possible, which may be carried out by using a delimiting structure referred to as a dam (so-called dam &amp; fill method; these are respectively not represented). The plastic material used may be a radiation-transmissive, or clear, plastic material, for example a silicone material or an epoxide material. It is also possible to use a thermoplastic or a thermoset. Furthermore, the plastic material may additionally contain phosphor particles (not shown), so that radiation conversion of light radiation emitted by the semiconductor chips  170  during operation may be brought about. In the plan representation of  FIG. 38  and in subsequent plan representations, the plastic material is represented as a clear material. 
     Subsequently, as shown in  FIG. 35 , the carrier  110  is structured into separate metal carrier sections  121 ,  122  by rear-side isotropic etching in the region of the depressions  130  by using the etching mask  142 . The etching is carried out until the plastic body  150  is reached, so that the plastic body  150  is exposed on the rear side in part. In this state, the separate carrier sections  121 ,  122  are held together by the plastic body  150 . The carrier sections  121 ,  122  have, in cross section, side flanks  131  with two curved partial flanks forming a common laterally protruding edge. 
     The component panel is subsequently, as is shown in  FIGS. 36 and 39 , singulated into separate optoelectronic components  100  by severing the plastic body  150  along separating lines  290  between carrier sections  121 ,  122 . During this process, the plastic body  150  is separated into plastic package bodies  155  belonging to the individual components  100 . 
     An individual radiation-emitting optoelectronic component  100 , which has been produced with the aid of the method of  FIGS. 33 to 39 , is depicted in a lateral sectional representation and in a plan representation in  FIGS. 40 and 41 . The component  100  comprises two separate metal carrier sections  121 ,  122 , a radiation-emitting semiconductor chip  170  arranged on the carrier sections  121 ,  122  and electrically connected to them by means of bond wires  180 , and the plastic package body  155  adjoining the carrier sections  121 ,  122  and the semiconductor chip  170  and encapsulating the semiconductor chip  170 . The plastic package body  155  forms a front side  101  and a circumferential lateral surface  105  of the component  100 . A structured rear side  102  of the component  100  is formed by the plastic package body  155  and the carrier sections  121 ,  122 . During operation of the component  100 , light radiation may be emitted through the plastic package body  155 , and therefore through the front side  102 , the lateral surface  105  and in part also through the rear side  102  of the component  100 . 
       FIGS. 42 and 43  show a lateral sectional representation and a plan representation of a further optoelectronic component  100 , which has a similar structure to the component  100  shown in  FIGS. 40, 41 . The component  100  comprises two separate metal carrier sections  121 ,  122  with different lateral dimensions. A radiation-emitting semiconductor chip  170  comprising two front-side contacts  175 ,  176  is arranged on the carrier section  121  and connected by means of bond wires  180  to the carrier sections  121 ,  122 . A further integral part is a plastic package body  155  adjoining the carrier sections  121 ,  122  and encapsulating the semiconductor chip  170 . The production (not represented) of components  100  having the configuration shown in  FIGS. 42,43  may be carried out in accordance with the method sequence of  FIGS. 33 to 39 , although in this case carrier sections  121 ,  122  having different lateral dimensions are produced and semiconductor chips  170  are mounted only on carrier sections  121 . By the arrangement of the semiconductor chip  170  only on the carrier section  121 , in contrast to the configuration shown in  FIGS. 40, 41 , in which the semiconductor chip  170  is arranged on both carrier sections  121 ,  122  and therefore covers a subregion, located between the carrier sections  121 ,  122 , of the plastic package body  155 , lower rear-side radiation emission may be achieved during operation of the component  100 . 
     In respect of the production of optoelectronic components  100  whose semiconductor chips  170  are embedded in a plastic package body  155 , anchoring may correspondingly be implemented by providing a carrier  110  and comprising through-holes  133  and, during the formation of a plastic body  150  on the carrier  110 , arranging the plastic material used in the through-holes  133 . For illustration, a possible modification of the method of  FIGS. 33 to 39  will be discussed in more detail below with the aid of  FIGS. 44 and 45 . 
       FIG. 44  shows a plan representation, corresponding to  FIG. 38 , of a prestructured metal carrier  110  which is equipped with semiconductor chips  170  and on which a plastic body  150  encapsulating the semiconductor chips  170  is formed. The carrier  110  comprises rear-side through-holes  133  merging into depressions  130 . In the configuration shown, the through-holes  133  are located in the region of corners of neighboring carrier sections  121 ,  122  provided for different components  100  to be produced, and therefore in the region of separating lines  290 . During the formation of the plastic body  150  on the carrier  110 , the plastic material used is introduced into the through-holes  133 , as shown in  FIG. 45  in the region of a through-hole  133  in a lateral sectional representation. The anchoring sections  158  thereby formed of the plastic body  150  are flush with the carrier  110  on the rear side. In the present case, the through-holes  133  have a shape projecting in steps relative to the depressions  130 . Correspondingly, the anchoring sections  158  have a shape projecting in steps relative to subsections of the plastic body  150  that are located in the depressions  130 . During the singulation carried out at the end of the method, the anchoring sections  158  may be severed and thereby distributed between a plurality of, or four, plastic package bodies  155  (this is not represented). 
       FIGS. 46 to 49  show, with the aid of lateral sectional representations, a further method sequence for the production of optoelectronic components  100 . This is a further modification of the method of  FIGS. 33 to 39 , in which a plastic body  150  is formed not from one but from two different plastic materials  151 ,  152 . At the start of the method, as is shown in  FIG. 46 , a prestructured metal carrier  110  comprising front-side and rear-side etching masks  141 ,  142  is again provided, which comprises carrier sections  121 ,  122  protruding in the region of the front side  111  and depressions  130  between them. As seen from above, the prestructured carrier  110  may have a structure corresponding to  FIG. 37 . Subsequently, as is likewise shown in  FIG. 46 , a first plastic material  151  is arranged on the front side  111  of the carrier  110 . The plastic material  151  is introduced only into the depressions  130  of the carrier  110 . 
     This is carried out in such a way that the plastic material  151  is flush with the carrier sections  121 ,  122 , or with the associated front-side etching mask  141 . To this end, for example, a molding process may be carried out (this is not represented). The plastic material  151  is a reflective material, which contains reflective particles (not shown) and may therefore have a white color. The plastic material  151  may, for example, be a silicon material or an epoxide material, in which reflective TiO 2  particles are embedded. 
     During the subsequent chip mounting, as is shown in  FIG. 47 , radiation-emitting optoelectronic semiconductor chips  170  are respectively arranged on two neighboring carrier sections  121 ,  122  and are connected by means of bond wires  180  respectively to one of the carrier sections  121 ,  122 . Furthermore, as is likewise shown in  FIG. 47 , a second plastic material  152  is arranged on the first plastic material  151 , the carrier sections  121 ,  122  and the semiconductor chips  170 , so that the semiconductor chips  170  are embedded together with bond wires  180  in the plastic material  152 . In this way, a plastic body  150  comprising the two plastic materials  151 ,  152  is provided simultaneously on the carrier  110 . The plan representation of  FIG. 38  may be used correspondingly in relation to  FIG. 47 . The second plastic material  152  is applied in the form of a continuous layer covering the semiconductor chips  170 . To this end, for example, a molding process or a casting process may be carried out (this is not shown). The second plastic material  152  may be a radiation-transmissive, or clear, plastic material, for example a silicone material or an epoxide material, and may optionally contain phosphor particles (not shown) for radiation conversion. 
     Following this, as is shown in  FIG. 48 , the carrier  110  is structured into separate carrier sections  121 ,  122  by rear-side etching in the region of the depressions  130 . The etching is carried out until the first plastic material  151  of the plastic body  150  is reached, so that the plastic material  151  is exposed on the rear side in part. 
     Subsequently, as is shown in  FIG. 49 , the component panel is singulated into separate optoelectronic components  100  by severing the plastic materials  151 ,  152  of the plastic body  150  along separating lines  290  between carrier sections  121 ,  122 . The plan representation of  FIG. 39  may be used correspondingly in relation to  FIG. 49 . During the singulation, the plastic body  150  is separated into the plastic package bodies  155  belonging to the individual components  100 . 
     An individual radiation-emitting optoelectronic component  100 , which has been produced with the aid of the method explained above, is shown in the lateral sectional representation of  FIG. 50 . As seen from above, the component  100  may have a structure corresponding to  FIG. 41 . The component  100  differs from the configuration shown in  FIG. 40  in that the plastic package body  155  comprises two different plastic materials  151 ,  152 . The first plastic material  151  is located laterally next to and between the carrier sections  121 ,  122 . In this case, the first plastic material  151  is flush with the front sides of the carrier sections  121 ,  122 , or with the front-side etching mask  141  present there. The second plastic material  152  is arranged on the first plastic material  151 , the carrier sections  121 ,  122  and the semiconductor chip  170 . A front side  101  of the component  100  is formed by the second plastic material  152 . A circumferential surface  105  of the component  100  is formed by two plastic materials  151 ,  152 . A structured rear side  102  of the component  100  is formed by the first plastic material  151  and carrier sections  121 ,  122 . During operation of the component  100 , light radiation may be emitted through the second plastic material  152  of the plastic package body  155 , and therefore through the front side  102  and the lateral surface  105 . Rear-side radiation emission may be suppressed with the aid of the reflective first plastic material  151 . 
       FIG. 51  shows a lateral sectional representation of a further optoelectronic component  100 , which has a structure similar to  FIGS. 42, 43  and which, in accordance with the component  100  explained above, comprises a plastic package body  155  constructed from two plastic materials  151 ,  152 . In this case as well, rear-side radiation emission may therefore be avoided during operation of the component  100 . The production (not shown) of components  100  having the configuration  100  shown in  FIG. 51  may be carried out in a similar way to the method explained above, although in this case carrier sections  121 ,  122  having different lateral dimensions are produced and semiconductor chips  170  are mounted only on carrier sections  121 . 
     In the method sequences explained above, optoelectronic components  100  are produced which comprise rear-side connection surfaces  135  formed by carrying sections, or by associated etching mask layer sections  142 . In the scope of surface mounting of the optoelectronic components  100 , the connection surfaces  135  may be wetted with a solder. Wetting may possibly also take place in relation to the side flanks  131  of the carrier sections, even if a flux is additionally used. This may be desired or undesired. In this context, it is conceivable to modify the method in such a way that wetting layers  145 , with the aid of which predetermined wetting with a solder may be achieved, are formed of metal carrier sections. 
     For illustration, a possible procedure in relation to the method of  FIGS. 46 to 49  will be explained in more detail below with the aid of the lateral representations of  FIGS. 52 and 53 . In this case, after the rear-side etching in order to structure the metal carrier  110  into separate carrier sections  121 ,  122  (cf.  FIG. 48 ) and before the singulation, as shown in  FIG. 52 , the rear-side etching mask  142  is removed from the carrier sections  121 ,  122 . In the case of a metal etching mask  142 , this process may for example be carried out mechanically by means of grinding or lapping (this is not represented). So that this process can be carried out simply, it is also conceivable, in contrast to the description above, to implement the rear-side etching mask  142  not in the form of a metal etching mask but instead in the form of a photoresist mask consisting of a photoresist material. In this configuration, the removal of the etching mask  142  may for example be carried out by using a solvent (this is not represented). 
     Subsequently, the carrier sections  121 ,  122  protruding relative to the plastic body  150  are cleaned (this is not represented), so that the bare original metal carrier material (copper) may be present on the rear side and on the side flanks  131  of the carrier sections  121 ,  122 . 
     Furthermore, as is shown in  FIG. 53 , a metal wetting layer  145  may be formed on the rear side and on the side flanks of the carrier sections  121 ,  122 . To this end, an electroless metallization method (electroless plating) may be carried out, in which the wetting layer  145  is produced selectively and without using a mask, or photoresist mask, on the carrier sections  121 ,  122 . For example, an ENEPIG (Electroless Nickel Electroless Palladium Immersion Gold) method is possible, so that a wetting layer  145  is formed from NiPdAu. Subsequently, the component panel may be singulated by severing the plastic body  150  into separate optoelectronic components  100  (this is not represented). 
       FIG. 54  shows a lateral sectional representation of an optoelectronic component  100  produced in the manner described above, which is arranged on a circuit board  260  after carrying out surface mounting. The circuit board  260  comprises contacts  261 . The component  100  is connected to the metal carrier sections  121 ,  122  and, by using a solder  270 , electrically and mechanically to the contacts  261  of the circuit board  260 . The configuration of the carrier sections  121 ,  122  with the wetting layer  145  present on the rear side and on the side flanks makes multiside wetting of the carrier sections  121 ,  122  with the solder possible  270  over a relatively large wetting area. This results in a high shear strength of the component  100  mounted on the circuit board  260 . Furthermore, lateral solder control may be made possible. 
       FIGS. 55 to 57  show, with the aid of lateral sectional representations, a further procedure which is conceivable in relation to method of  FIGS. 46 to 49 . In this case, after the rear-side etching in order to structure the metal carrier  110  into separate carrier sections  121 ,  122  (cf.  FIG. 48 ) and before the singulation, the rear-side etching mask  142  is removed from the carrier sections  121 ,  122  (cf.  FIG. 52 ), the carrier sections  121 ,  122  protruding relative to the plastic body  150  are cleaned (this is not represented), and, as is shown in  FIG. 55 , an antiwetting layer  146  is formed on the rear side and on the side flanks of the carrier sections  121 ,  122 . For the formation of the antiwetting layer  146 , a metal, for example nickel, may be deposited on the carrier sections  121 ,  122  by an electroless metallization method and subsequently oxidized. The antiwetting layer  146  formed in this way is subsequently removed on the rear side of the carrier sections  121 ,  122 , as is shown in  FIG. 56 . This process may, for example, be carried out mechanically by means of grinding or lapping. It is also possible to remove or grind down the antiwetting layer  146  only in part (these are respectively not represented). Subsequently, as is shown in  FIG. 57 , a metal wetting layer  145  is formed on the rear side of the carrier sections  121 ,  122 . This may, as described above, be carried out with the aid of an electroless metallization method, for example an ENEPIG method, in which the wetting layer  145  is produced selectively and without a (photoresist) mask on the rear side of the carrier sections  121 ,  122 . Subsequently, the component panel may be singulated into separate optoelectronic components  100  by severing the plastic body  150  (this is not represented). 
       FIG. 58  shows a lateral sectional representation of an optoelectronic component  100  produced in the manner described above, which is arranged on a circuit board  260  after carrying out surface mounting. The component  100  is connected to the metal carrier sections  121 ,  122  and, by using a solder  270 , electrically and mechanically to contacts  261  of the circuit board  260 . The configuration of the carrier sections  121 ,  122  with the antiwetting layer  146  arranged on the side flanks and the wetting layer  145  present on the rear side makes planar wetting of the carrier sections  121 ,  122  with the solder  270  possible. Wetting of the side flanks of the carrier sections  121 ,  122  may be prevented by the antiwetting layer  146 . In this case, use is made of the fact that the antiwetting layer  146  may be distinguished by high stability, even in relation to a flux. This is the case, for example, with formation of the antiwetting layer  146 , from nickel oxide. In this way, there is the possibility of providing small carrier sections  121 ,  122  and small distances between the carrier sections  121 ,  122 . 
     The other method sequences described above may also be modified correspondingly so that carrier sections are provided with a wetting layer  145  and optionally an antiwetting layer  146  before the singulation (this is not represented). 
     In relation to the production of optoelectronic components  100  comprising a radiation-emitting semiconductor chip  170  embedded in a plastic package body  155 , as were explained with the aid of the method sequences of  FIGS. 33 to 39  and the subsequent figures, further possible modifications consist in producing optoelectronic components  100  that comprise a plurality of semiconductor chips  170  instead of a single one. The plurality of semiconductor chips  170  may be separately drivable, which may be implemented by a configuration, adapted therefor, of metal carrier sections and corresponding interconnection of the semiconductor chips  170 . Furthermore, the semiconductor chips  170  may be configured for the generation of different light radiations, and the components  100  may for example be implemented in the form of RGB components. 
     In order to illustrate the aforementioned aspect,  FIGS. 59 and 60  show a lateral sectional representation and a plan representation of a further optoelectronic component  100 . The component  100  comprises four separate metal carrier sections  121 ,  122 ,  123 ,  124  that can be contacted on the rear side, three radiation-emitting semiconductor chips  170  arranged on the carrier section  121 , and a plastic package body  155  adjoining the carrier sections  121 ,  122 ,  123 ,  124  and the semiconductor chips  170  and encapsulating the semiconductor chips  170 . The plastic package body  155  is formed from a radiation-transmissive, or clear, plastic material. The semiconductor chips  170  may be configured for the generation of red, green and blue light radiation, so that the component  100  is an RGB component. 
     In the present case, the semiconductor chips  170  comprise a rear-side contact (not shown) and a front-side contact  175 . With the rear-side contact and an electrically conductive connecting material (not shown) (adhesive, solder or sintering paste), the semiconductor chips  170  are electrically connected to the carrier section  121 . The front-side contacts  175  of the semiconductor chips  170  are connected by means of bond wires  180  respectively to one of the carrier sections  122 ,  123 ,  124 . The sectional representation of  FIG. 59  differs somewhat from  FIG. 60  for reasons of clarity, by the two semiconductor chips  170  being represented together with bond wires  180  as lying in a common section plane. The production (not represented) of optoelectronic components  100  having the configuration shown in  FIGS. 59, 60  may be carried out in a similar way to the method sequence of  FIGS. 33 to 39 , although in this case carrier sections  121 ,  122 ,  123 ,  124  are produced for each component  100  to be produced and semiconductor chips  170  are mounted and wired on carrier sections  121  in accordance with  FIGS. 59, 60 . 
       FIGS. 61 and 62  show a lateral sectional representation and a plan representation of a further similarly constructed optoelectronic component  100 . The component  100  comprises six separate metal carrier sections  121 ,  122 ,  123 ,  124 ,  125 ,  126  that can be contacted on the rear side, a radiation-emitting semiconductor chip  170  respectively being arranged on the carrier sections  121 ,  123 ,  125 . The component  100  furthermore comprises a plastic package body  155  adjoining the carrier sections  121 ,  122 ,  123 ,  124 ,  124 ,  126  and semiconductor chips  170  and encapsulating the semiconductor chips  170 . The plastic package body  155  is formed from a radiation-transmissive, or clear, plastic material. The semiconductor chips  170  may be configured for the generation of red, green and blue light radiation, so that the component  100  is an RGB component. 
     The semiconductor chips  170  are electrically connected with a rear-side contact and by means of an electrically conductive connecting material to the carrier sections  121 ,  123 ,  125  (this is not represented). The front-side contacts  175  of the semiconductor chips  170  are connected by means of bond wires  180  respectively to one of the carrier sections  122 ,  124 ,  126 . The production (not represented) of optoelectronic components  100  having the structure shown in  FIGS. 61, 62  may be carried out in a similar way to the method sequence of  FIGS. 33 to 39 , although in this case carrier sections  121 ,  122 ,  123 ,  124 ,  125 ,  126  are formed for each component  100  to be produced, and semiconductor chips  170  are mounted and wired on carrier sections  121 ,  123 ,  125  in accordance with  FIGS. 61, 62 . 
     Besides the embodiments described above and depicted in the figures, further embodiments may be envisioned, which may comprise further modifications and/or combinations of features. 
     For example, it is possible to use other materials instead of the materials specified above. In this sense, a carrier  110  may for example be formed from a metal material other than copper. Possible carrier materials are for example iron-nickel, aluminum or molybdenum. Furthermore, the numerical specifications above are merely to be regarded as examples which may be replaced by other specifications. 
     In order to bring about radiation conversion, it is possible to use radiation-emitting semiconductor chips that comprise a conversion element in layer form or in platelet form for radiation conversion. As an alternative, such a conversion layer or a conversion element may also be formed or arranged on semiconductor chips after the chip mounting. 
     A further modification consists in implementing a front-side etching mask  141  not in the form of a metal etching mask but in the form of a photoresist mask consisting of a photoresist material. 
     Although the invention has been illustrated and described in detail by preferred exemplary embodiments, the invention is not restricted by the examples disclosed, and other variants may be derived therefrom by the person skilled in the art without departing from the protective scope of the invention. 
     LIST OF REFERENCES 
     
         
           100  optoelectronic component 
           101  front side 
           102  rear side 
           105  lateral surface 
           110  carrier 
           111  front side 
           112  rear side 
           121  carrier section 
           122  carrier section 
           123  carrier section 
           124  carrier section 
           125  carrier section 
           126  carrier section 
           130  depression 
           131  side flank 
           132  depression 
           133  through-hole 
           135  connection surface 
           139  etching region 
           141  etching mask 
           142  etching mask 
           145  wetting layer 
           146  antiwetting layer 
           150  plastic body 
           151  plastic material 
           152  plastic material 
           155  plastic package body 
           156  cavity 
           157  cavity 
           158  anchoring section 
           161  filler material 
           162  filler material 
           170  optoelectronic semiconductor chip 
           175  contact 
           176  contact 
           180  bond wire 
           190  driver chip 
           200  prefabricated package 
           210  thickness 
           230  depth 
           241  distance 
           242  distance 
           260  circuit board 
           261  contact 
           270  solder 
           290  separating line