Semiconductor device
By forming conductive path segments and lead bonding on the substrate of the semiconductor device, the problem of long wires being easily swept and damaged is solved by using laser direct molding technology, and a more efficient manufacturing process and more stable electrical coupling are achieved.
Patent Information
- Application Number
- CN202421572439.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Priority Date
- 2024-06-28
- Filing Date
- 2024-07-04
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-07-04
AI Technical Summary
In existing semiconductor device manufacturing processes, long wires are prone to sweep and damage, resulting in device failure and low manufacturing efficiency.
By forming conductive path segments and lead bonding on the substrate of the semiconductor device, a conductive structure is formed using laser direct molding technology to reduce the conductor length and improve the stability of electrical coupling.
Effectively reduces the sweep and damage of wires, improves the manufacturing efficiency and output of devices, and reduces costs.
Smart Images

Figure CN222953081U_ABST
Abstract
Description
Technical Field
[0001] This description relates to fabricating semiconductor devices.
[0002] One or more embodiments may be applied to fabricating integrated circuit (IC) semiconductor devices, for example, for automotive applications. Background Art
[0003] Semiconductor devices provided with a so-called quad flat package (QFP), for example, for automotive or industrial applications, may have a relatively large number of input / output (I / O) pins (or leads).
[0004] For example, in the case of a super high density (SHD) or super super high density (SSHD) device, there may be more than a hundred pins.
[0005] In such leadframe-based packages, a semiconductor chip / die is arranged on a die pad of a leadframe and electrically coupled to a plurality of leads disposed around the die pad.
[0006] Wires are typically used to provide the desired coupling between the semiconductor die and the leads.
[0007] Wires may also be used to provide electrical coupling between the semiconductor die and a die pad, which is often used to provide a ground level for the device.
[0008] Using current processing techniques (such as stamping or etching), leads can be formed with a minimum pitch of approximately 150 microns to 180 microns; due to the relatively large number of leads and the reduced package size, the distance between the die pad and the proximal end of the lead cannot be reduced beyond a minimum value, resulting in relatively long wires coupling the die to the leads.
[0009] It has been observed that longer wires are more prone to problems associated with the molding step; in fact, current manufacturing processes for semiconductor devices include a molding step in which a resin or epoxy molding compound (e.g., EMC, epoxy) is molded onto the device to form a protective plastic body. During this process, the flow of resin in the molding cavity can cause the wire to "sweep," i.e., deform in response to the viscous drag exerted by the flowing molding compound.
[0010] Wire sweeps may exceed specifications or, in the worst case, cause two adjacent wires to touch, creating an undesirable short circuit.
[0011] Furthermore, it has been found that long wires tend to be more susceptible to damage (failure) during handling (or just picking up, for example) of the device.
[0012] Damaged or shorted wires may cause device failure during processing and, therefore, rejection, adversely affecting manufacturing yields and resulting in relatively low time and cost efficiency of the manufacturing process.
[0013] There is a need in the art for embodiments that overcome the above-mentioned shortcomings. Utility Model Content
[0014] An object of the present disclosure is to provide a semiconductor device to at least partially solve the above-mentioned problems existing in the prior art.
[0015] One aspect of the present disclosure provides a semiconductor device, comprising: a substrate having a conductive substrate portion, wherein the conductive substrate portion includes a die mounting position and a plurality of conductive leads surrounding the die mounting position; a semiconductor die mounted on a first surface of the die mounting position of the substrate; a first electrically insulating package, the first electrically insulating package encapsulating both the substrate and the semiconductor die, wherein the first electrically insulating package has a surface opposite to the first surface of the die mounting position; an opening, in the first electrically insulating package, the opening exposing a die bonding pad of the semiconductor die; a conductive path segment, the conductive path segment extending through the first electrically insulating package between the conductive lead and a midpoint at a surface of the first electrically insulating package and located on the first electrically insulating package; and a wire bond, in the opening in the first electrically insulating package, and the wire bond extending between the die bonding pad of the semiconductor die and the conductive path segment at the midpoint.
[0016] According to one or more embodiments, the device further includes a second electrically insulating package encapsulating the conductive path segments and the wire bonds.
[0017] In accordance with one or more embodiments, the die mounting location is disposed displaced relative to the plurality of conductive leads surrounding the die mounting location.
[0018] According to one or more embodiments, the first electrically insulating package includes a laser direct structuring (LDS) molding compound layer.
[0019] According to one or more embodiments, the conductive path segments include: traces and via openings formed in an LDS mold compound layer by an LDS process; and conductive structures at the traces and via openings.
[0020] According to one or more embodiments, the device further includes: another opening in the first electrically insulating package, the other opening exposing another die bonding pad of the semiconductor die; another conductive path segment extending through the first electrically insulating package between the substrate and another midpoint at the surface of the first electrically insulating package and / or extending above the first electrically insulating package between the substrate and another midpoint at the surface of the first electrically insulating package; and another wire bond in the other opening and extending between the other die bonding pad of the semiconductor die and another conductive path segment at another midpoint.
[0021] In accordance with one or more embodiments, the device further includes a second electrically insulating package encapsulating the conductive path segment, the further conductive path segment, the wire bond, and the further wire bond.
[0022] In accordance with one or more embodiments, the die mounting location is disposed displaced relative to the plurality of conductive leads surrounding the die mounting location.
[0023] According to one or more embodiments, the first electrically insulating package includes a laser direct structuring (LDS) molding compound layer.
[0024] According to one or more embodiments, another conductive path segment includes: a trace and a via opening formed in the LDS mold compound layer by an LDS process; and a conductive structure at the trace and the via opening.
[0025] The solution described herein helps to reduce the length of the wire, thereby reducing its sweep and damage. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] One or more embodiments will now be described, by way of example only, with reference to the accompanying drawings, in which:
[0027] Figure 1 is a plan view illustrating the structure of a semiconductor device;
[0028] FIG. 2A to FIG. 2F is a series of cross-sectional views illustrating processing steps according to an embodiment of the present specification;
[0029] Figure 3A and Figure 3B shows processing steps according to an embodiment of the present specification; and
[0030] Figure 4A and Figure 4B are plan views illustrating coupling patterns in a semiconductor device according to a conventional method and according to an embodiment of the present specification, respectively. DETAILED DESCRIPTION
[0031] Corresponding numerals and symbols in the different figures generally refer to corresponding parts unless otherwise indicated.
[0032] The drawings are drawn to clearly illustrate the relevant aspects of the embodiments and are not necessarily drawn to scale.
[0033] The edges of a feature drawn in a drawing do not necessarily indicate the end of the extent of the feature.
[0034] In the following description, various specific details are shown to provide a deeper understanding of various examples of embodiments according to the description. Embodiments may be obtained without one or more of the specific details, or with other methods, components, materials, etc. In other cases, well-known structures, materials, or operations are not shown or described in detail so as not to obscure aspects of the embodiments.
[0035] References to "one embodiment" or "an embodiment" in the framework of this specification are intended to indicate that a particular configuration, structure, or characteristic described with respect to that embodiment is included in at least one embodiment. Therefore, phrases such as "in an embodiment," "in one embodiment," etc., which may appear in various points of this specification, do not necessarily refer to exactly the same embodiment. Furthermore, particular configurations, structures, or characteristics may be combined in any appropriate manner in one or more embodiments. The references used herein are provided merely for convenience and therefore do not limit the scope of protection or the scope of the embodiments.
[0036] Figure 1 A portion of an integrated circuit (IC) semiconductor device is shown that includes a semiconductor chip or die 14 (as used herein, the terms chip and die are considered synonymous) arranged on a mounting location 12A (die pad) of a conductive substrate (commonly referred to as a lead frame).
[0037] The name "leadframe" (or "leadframe") (see, e.g., the USPCO's USPC Incorporated Glossary) refers to the metal frame that provides support for an integrated circuit chip or die, and the electrical leads that interconnect the integrated circuits in the die or chip to other components or contacts.
[0038] refer to Figure 1 , the leadframe includes an array of conductive structures or leads 12B extending inwardly from an outline position in the direction of the (integrated circuit) semiconductor chip or die 14, thereby forming an array of conductive structures by a die pad 12A, which is configured to have at least one semiconductor chip or die 14 attached thereto. This can be achieved by, for example, a die attach adhesive (die attach film, such as Figures 2A to 2F and Figure 3A and Figure 3B It is achieved by conventional means as shown in FIG. 1 and represented here by the reference character DA).
[0039] Conductive structures are provided to electrically couple the semiconductor chip to selected ones of the leads (external pads) 12B in the lead frame.
[0040] As shown, such coupling may be provided by a wire bonding pattern of wires 16, as is conventional in the art.
[0041] After electrical coupling is formed between chip 14 and leads 12B, an encapsulation material, such as epoxy molding compound (EMC), is molded over the thus formed assembly to provide a protective plastic package for the device.
[0042] The molding step is typically performed by placing the lead frame with the die 14 mounted thereon in a molding cavity, wherein a molding compound is injected at a relatively high pressure.
[0043] like Figure 1 The integrated circuit semiconductor device shown may have a relatively large number of input / output (I / O) leads 12B; for example, a device such as a microcontroller or an ASIC for automotive applications provided with a quad flat package (QFP) as shown in the drawing may have more than a hundred leads 12B.
[0044] The minimum pitch of leads 12B achievable with current technology—approximately 150 to 180 microns, depending on the technique used to form the leadframe and leads 12B (e.g., etching or stamping)—can reduce device design flexibility when a large number of leads 12B are required, such as in so-called super high density (SHD) or super-ultra high density (SSHD) devices.
[0045] Due to the minimum lead pitch, the distance between leads 12B and die pad 12A cannot be reduced beyond a certain value: therefore, relatively long wires 16 are used to provide the required electrical coupling between semiconductor die 14 (mounted / attached to die pad 12A) and I / O leads 12B.
[0046] It has been observed that long wires 16 are more susceptible to deformation (bending) in response to the drag forces exerted by the viscous flow of the molding compound during the molding step. Excessive sweeping may result in the rejection of the device, and in the worst case, may cause adjacent wires to contact to form an undesirable short circuit leading to device failure (and rejection).
[0047] Figure 1 Wire sweeping, ie, undesired displacement of the wire 16 caused by conventional molding processes, is shown.
[0048] In the case of some exemplary conductive lines 16, this effect is represented by indicating the position of the wire 16 before and after the molding process with dashed and solid lines, respectively.
[0049] It has been found that long wires are also more susceptible to damage or failure during processing / handling of the device.
[0050] The solution described herein aims to overcome the above mentioned drawbacks.
[0051] The solution described herein can be advantageously applied to SHD or SSHD devices having a QFP type package.
[0052] The solution described herein helps to reduce the length of the wire, thereby reducing its sweep and damage.
[0053] The solution described herein comprises providing a first partial package and subsequently forming the desired electrical coupling.
[0054] In a solution as described herein, the desired electrical coupling is provided by forming a conductive path comprising two parts: a first part provided via growth / deposition of a conductive material (eg, a metal such as copper); and a second part provided by wire bonding.
[0055] The solution described herein may utilize laser direct structuring (LDS) to form a portion of the required electrical coupling.
[0056] Laser Direct Structuring (LDS) is a laser-based processing technology now widely used in various sectors of the industrial and consumer electronics markets, for example for high-performance antenna integration, where antenna designs can be formed directly onto molded plastic parts.
[0057] In an exemplary process, molded parts may be produced with commercially available insulating resins including additives suitable for the LDS process; a wide range of resins, for example polymer resins such as PC, PC / ABS, ABS, LCP are currently available for this purpose.
[0058] In LDS, a laser beam can be used to transfer ("build") a desired conductive pattern onto a plastic molding, which can then be metallized to complete the desired conductive pattern.
[0059] Metallization may include electroless plating followed by electrolytic plating.
[0060] Electroless plating, also known as chemical plating, is a class of industrial chemical processes that produce metallic coatings on various materials by the autocatalytic chemical reduction of metal cations in a liquid bath.
[0061] In electrolytic plating, an electric field between the anode and the workpiece acting as the cathode forces the positively charged metal ions to move to the cathode where they release their charge and deposit themselves as metal on the surface of the workpiece.
[0062] Refer to U.S. Patent Application Publication Nos. 2018 / 0342453, 2019 / 0115287, 2020 / 0203264, 2020 / 0321274, 2021 / 0050226, 2021 / 0050299, 2021 / 0183748 or 2021 / 0305203 (all of which are incorporated herein by reference) as examples of the possibility of applying LDS technology in the manufacture of semiconductor devices.
[0063] FIG. 2A to FIG. 2F The sequence of FIG. 1 illustrates a sequence of processing steps to provide the desired electrical coupling between die 14 and leads 12B.
[0064] It should also be understood that FIG. 2A to FIG. 2F The sequence of steps is exemplary only insofar as: FIG. 2A to FIG. 2F One or more of the steps shown may be at least partially omitted, performed in a different manner (e.g., with other tools), and / or replaced with other steps; additional steps may be added; and one or more steps may be performed in an order different from that shown.
[0065] Figure 2A A lead frame of a quad flat package (QFP) device is shown, which is an example of a device to which embodiments of the present description may be advantageously applied.
[0066] As shown, the die pad 12A may have a downset relative to the array of conductive leads 12B disposed around the die pad 12A.
[0067] The semiconductor die 14 is arranged (e.g., attached via a die attach material DA) on the top / front surface of the die pad 12A and has a die bonding pad 18 on its top / front surface (only one bonding pad is shown for simplicity) configured to be electrically coupled to a selected lead 12B or die pad 12A.
[0068] The assembly is arranged in a conventional moulding cavity C in order to carry out a first (partial) moulding step.
[0069] For simplicity and ease of explanation, reference will be made to the manufacturing process of a single device in the following description, it being understood that multiple devices may be processed simultaneously and may be separated into individual devices in a final singulation step, as known to those skilled in the art.
[0070] Figure 2B An electrically insulating molding compound 20 (eg, epoxy) is shown molded onto the leadframe (including leads 12B) having the semiconductor die mounted thereon to provide a first partial package for the device.
[0071] As shown, the semiconductor die 14 and the proximal portions of the leads 12B are embedded in the molding compound 20, while the bottom / rear surface of the die pad 12A (configured to be mounted / soldered to a support member such as a printed circuit board PCB) and the distal portions of the leads 12B are not covered by the molding compound 20.
[0072] In certain embodiments, the mold compound 20 used to form the first portion of the package may be a mold compound suitable for LDS; as described above, such a mold compound includes additive particles that can be activated by laser beam energy to promote growth of metal material.
[0073] Figure 2C A laser processing step is illustrated in which laser beam energy LB is applied to the molding compound 20 to construct therein: a via 181 extending from a front / top surface of a portion of the package 20 to a die bonding pad 18 disposed on the front / top surface of the semiconductor die 14; and a trace 182' extending from the lead 12B at the front / top surface of the package 20 to an intermediate position P between the lead 12B and the die 14.
[0074] As shown, laser ablation of mold compound 20 to construct trace 182' advantageously involves constructing additional vias (visible in the figure but not explicitly labeled for simplicity) at the distal ends of trace 182' to expose the metallic material (eg, copper) of lead 12B.
[0075] Those skilled in the art will appreciate that these additional vias are optional as their presence depends on the thickness of mold compound 20 and the relative heights of leads 12B and semiconductor die 14 .
[0076] The trace 182' has a reference number with a superscript mark (') to highlight that the conductive trace / line 182 will (only) be used as shown. Figure 2D The fact that subsequent metal growth is then formed at those locations is represented in .
[0077] In a case where an LDS molding compound layer has been used to form a first (partial) package 20, laser beam energy LB is applied to the LDS compound layer (i.e., the molding compound to which an LDS additive is added) to simultaneously remove (ablate) the LDS compound 20 and to "activate" additive particles embedded in the LDS compound that are exposed at the surface of the LDS compound in response to a portion of the LDS compound being removed (ablated) via the laser.
[0078] Figure 2D Growth / deposition of a metallic material (eg, copper) to form conductive traces 182 is shown.
[0079] For example, the conductive traces 182 may be formed by conductive glue jetting or by laser induced forward transfer (LIFT).
[0080] The acronym LIFT refers to a deposition process in which the transfer of material from a donor tape or sheet to a receptor substrate (here the electrically insulating molding compound 20) is facilitated by laser pulses.
[0081] General information on the LIFT process can be found in, for example, P. Serra et al.:
[0082] “Laser-Induced Forward Transfer: Fundamentals and Applications,” Advanced Materials Technologies / Vol. 4, No. 1 (incorporated herein by reference).
[0083] Advantageously, the traces 182 may be provided using laser direct structuring techniques.
[0084] In this case, a first ("seed") layer of metallic material (eg, copper) is grown via electroless deposition at locations of the mold compound 20 that have been activated via laser energy (ie, traces 182').
[0085] The seed layer grown by electroless deposition facilitates the growth of the (complete) trace 182 by electrolytic growth / deposition.
[0086] However, the trace 182 is formed to provide a first portion (from lead 12B to intermediate point P) of the conductive path from lead 12B to die bond pad 18 on the top / front surface of semiconductor die 14 .
[0087] The plasma cleaning / etching step can be Figure 2D After the growth / deposition steps shown.
[0088] Figure 2E Conductive wire 16 is shown for coupling die pad 18 to the proximal end of conductive trace 182 (approximately at midpoint P). This method may be performed by any conventional method; for example, conventional wire bonding may be used to provide the desired electrical coupling between die pad 18 and the proximal end of trace 182.
[0089] As shown, the conductive line 16 electrically coupling the die bond pad 18 to the trace 182 provides a second portion of the conductive path coupling the lead 12B to the semiconductor die 14 .
[0090] Figure 2F A second molding step is shown which completes the protective plastic encapsulation of the device. A standard (ie, non-LDS) molding compound 22 can be used for this second molding step.
[0091] The shorter wire 16 electrically coupling the semiconductor die 14 to the intermediate point P (ie, the proximal portion of the trace 182) experiences lower drag forces during the second molding step, and therefore less sweeping.
[0092] In a similar manner, the aforementioned processing steps may also be applied to provide electrical coupling between the die bond pad 18 and the die pad 12A (typically providing ground to the device).
[0093] Figure 3A and Figure 3B Processing steps are shown that provide the desired electrical coupling between the semiconductor die 14 and the die pad 12A in accordance with an embodiment of the present description.
[0094] Figure 3A Vias 181, 183' are shown opening through an insulating mold compound 20 molded onto a lead frame on which a semiconductor die 14 is mounted to form a first (partial) package of the device.
[0095] Vias 181 and 183 ′ extend from the top / front surface of the first partial package to the die bond pad 18 and the die pad 12A, respectively.
[0096] As shown, trace 182 ′ may also be formed at the top / front surface of package 20 , extending outward from midpoint P of the top / front surface of package 20 to the end of via 183 at the surface of the first portion of package 20 .
[0097] Furthermore, traces 182' and vias 183' have reference numerals marked with a superscript (') in order to highlight the fact that conductive traces 182 and vias 183 will be formed at those locations (only) after subsequent metal growth.
[0098] Figure 3B A conductive path is shown provided to electrically couple the die bond pad 18 on the top / front surface of the semiconductor die 14 to the die pad 12A.
[0099] Similar to the situation discussed above (for example, regarding Figure 2E ), the conductive path includes two parts / segments, namely: a first segment 182, 183, which extends from the die pad 12A to a midpoint P on the surface of the package 20, formed by deposition / growth of a conductive material (e.g., a metal such as copper); and a second portion from the die bonding pad 18 to the midpoint P provided by wire bonding.
[0100] As shown, a first portion of the conductive path may include vias 183 extending through a portion of the mold compound of the package 20 and traces 182 formed at a surface of the package 20 .
[0101] Also in this case, LDS techniques may be advantageously used to form the first portion of the conductive path, namely the conductive via 183 and the trace 182 .
[0102] The process of providing electrical coupling between the die bond pad 18 and the die pad 12A as previously described results in relatively short conductive lines 16 that are less exposed to problems during molding steps (sweeping) and / or problems during handling steps (failures).
[0103] It should be noted that Figures 2A to 2F The process steps for electrically coupling semiconductor die 14 to lead 12B as illustrated in FIG. Figure 3A and Figure 3B The processing steps illustrated in illustrative embodiments of electrically coupling semiconductor die 14 to die pad 12A may be applied in the same device.
[0104] In practice, some of the die bond pads 18 of the semiconductor die 14 may be configured to be electrically coupled to selected ones of the leads 12B, while other die bond pads 18 may be configured to be electrically coupled to the die pad 12A (eg, to provide a ground level).
[0105] In summary, the solution described herein involves mounting a semiconductor die 14 on a substrate (i.e., a lead frame) having a conductive substrate portion including a die mounting location (die pad) 12A and a plurality of conductive leads 12B surrounding the die mounting location 12A. The semiconductor die 14 is mounted on a first (top / front) surface of the die mounting location 12A.
[0106] The substrate with the semiconductor die 14 mounted thereon is packaged in an electrically insulating package 20. The electrically insulating package 20 has a (top / front) surface opposite to the first surface of the die mounting location 12A.
[0107] One or more conductive paths are provided to electrically couple the semiconductor die 14 to one of the conductive substrate portions (eg, the leads 12B or the die pad 12A).
[0108] The conductive path includes: a first path segment 182, 183, which extends through the electrically insulating package 20 and / or extends above the electrically insulating package 20 between the conductive substrate portion (lead 12B or die pad 12A) and a midpoint P at the surface of the electrically insulating package 20; and a second path segment, which is joined via a wire 16 and extends between the semiconductor die 14 and a midpoint P at the surface of the first package 22.
[0109] The first section of the conductive path pad is provided by deposition / growth of a conductive material (eg a metal such as copper).
[0110] Advantageously, the first section of the conductive path can be provided via LDS technology, which involves, for example: molding an LDS suitable molding compound to form a first (partial) package 20 of a substrate on which the semiconductor die 14 is mounted; transferring the desired pattern to the first package via laser structuring (ablating the LDS molding compound layer and activating additive particles embedded therein) to form vias 181, 183' and traces 182'; and metallizing the vias 183 and traces 182, which are pre-activated to provide the first part of the conductive path.
[0111] Figure 4A and Figure 4B is an example of a QFP device (such as an SHD or SSHD), in which according to the conventional method ( Figure 4A ) and according to the embodiments of this specification ( Figure 4B ) provides the desired electrical coupling (for simplicity, only from semiconductor die 14 to lead 12B).
[0112] like Figure 4A As illustrated in FIG. 1 , the conductive line 16 extending between the die bond pad 18 on the top / front surface of the semiconductor die 14 and the lead 12B has a relatively large first length L1 (on average).
[0113] On the contrary, Figure 4B The illustrated embodiment provides only a portion of the desired electrical coupling between the semiconductor die 14 and the leads, namely, only extends to the first portion of the package (at Figure 4A and 4B The wire 16 at the intermediate point P on the surface (not visible in the figure) has a second length L2 which is (on average) smaller than L1.
[0114] One or more embodiments are directed to a method.
[0115] One or more embodiments relate to a corresponding semiconductor device.
[0116] The solutions described herein help reduce the length of wires used to electrically couple a semiconductor die to a lead or die pad.
[0117] In a solution as described herein, a portion of the conductive path providing the desired coupling is formed via deposition / growth of a conductive material (eg, a metal such as copper).
[0118] The solution described herein may utilize laser direct structuring (LDS) to form a portion of the required electrical coupling.
[0119] One aspect of the present disclosure provides a method comprising: mounting a semiconductor die on a substrate having a conductive substrate portion, wherein the conductive substrate portion includes a die mounting position and a plurality of conductive leads surrounding the die mounting position, wherein the semiconductor die is mounted on a first surface of the die mounting position; encapsulating both the semiconductor die and the substrate in a first electrically insulating package, wherein the first electrically insulating package has a surface opposite to the first surface of the die mounting position; providing an opening in the surface of the first electrically insulating package to expose a die bonding pad of the semiconductor die; providing a conductive path segment extending through the first electrically insulating package and on the first electrically insulating package between a conductive lead and a midpoint at the surface of the first electrically insulating package; providing a wire bond in the opening in the surface of the first electrically insulating package, and the wire bond extends between the die bonding pad of the semiconductor die and the conductive path segment at the midpoint.
[0120] The method according to the present application further includes encapsulating the conductive path segments and the wire bonds in a second electrically insulating package.
[0121] According to one or more embodiments, the die mounting location is disposed displaced relative to the plurality of conductive leads around the die mounting location.
[0122] According to one or more embodiments, the first electrically insulating package includes a laser direct structuring (LDS) molding compound layer.
[0123] According to one or more embodiments, providing the conductive path segments includes: LDS processing the LDS mold compound layer to form traces and via openings; and forming conductive structures at the traces and via openings.
[0124] According to one or more embodiments, the method further includes: providing another opening in the first electrically insulating package to expose another die bonding pad of the semiconductor die; providing another conductive path segment, the other conductive path segment extending through the first electrically insulating package between the substrate and another intermediate point at the surface of the first electrically insulating package and located on the first electrically insulating package; and providing another wire bond in the other opening, and the other wire bond extending between the other die bonding pad of the semiconductor die and the other conductive path segment at the other intermediate point.
[0125] In accordance with one or more embodiments, the method further includes encapsulating the conductive path segment, the further conductive path segment, the wire bond, and the further wire bond in a second electrically insulating package.
[0126] According to one or more embodiments, the die mounting location is disposed displaced relative to the plurality of conductive leads around the die mounting location.
[0127] According to one or more embodiments, the first electrically insulating package includes a laser direct structuring (LDS) molding compound layer.
[0128] According to one or more embodiments, providing the another conductive path segment includes: LDS processing the LDS mold compound layer to form traces and via openings; and forming conductive structures at the traces and via openings.
[0129] Without prejudice to the essential principles, the details and embodiments may vary even significantly with respect to what is described merely by way of example, without departing from the scope of the embodiments.
[0130] The claims are an integral part of the technical teaching provided with respect to the embodiments.
[0131] The scope of protection is determined by the appended claims.
Claims
1. A semiconductor device, characterized in that: include: a substrate having a conductive substrate portion, wherein the conductive substrate portion includes a die mounting location and a plurality of conductive leads surrounding the die mounting location; a semiconductor die mounted on a first surface of the substrate at the die mounting location; a first electrically insulating package encapsulating both the substrate and the semiconductor die, wherein the first electrically insulating package has a surface opposite the first surface where the die is mounted; an opening in the first electrically insulating package, the opening exposing a die bond pad of the semiconductor die; a conductive path segment extending through and on the first electrically insulating package between a conductive lead and an intermediate point at the surface of the first electrically insulating package; as well as A wire bond is in the opening in the first electrically insulating package and extends between the die bond pad of the semiconductor die and the conductive path segment at the intermediate point.
2. The semiconductor device according to claim 1, wherein: Also included is a second electrically insulating package encapsulating the conductive path segments and the wire bonds.
3. The semiconductor device according to claim 1, wherein: The die mounting location is disposed displaced relative to the plurality of conductive leads surrounding the die mounting location.
4. The semiconductor device according to claim 1, wherein: The first electrically insulating package comprises a laser direct structuring (LDS) molding compound layer.
5. The semiconductor device according to claim 4, characterized in that The conductive path segment comprises: trace and via openings formed in the LDS mold compound layer by LDS processing; and Conductive structures at the trace and via openings.
6. The semiconductor device according to claim 1, wherein: Further including: another opening, in the first electrically insulating package, the other opening exposing another die bond pad of the semiconductor die; a further electrically conductive path segment extending through the first electrically insulating package between the substrate and a further intermediate point at the surface of the first electrically insulating package and / or extending over the first electrically insulating package between the substrate and the further intermediate point at the surface of the first electrically insulating package; as well as Another wire bond is in the another opening and extends between the another die bond pad of the semiconductor die and the another conductive path segment at the another intermediate point.
7. The semiconductor device according to claim 6, characterized in that Also included is a second electrically insulating package encapsulating the conductive path segment, the further conductive path segment, the wire bond, and the further wire bond.
8. The semiconductor device according to claim 6, wherein: The die mounting location is disposed displaced relative to the plurality of conductive leads surrounding the die mounting location.
9. The semiconductor device according to claim 6, characterized in that The first electrically insulating package comprises a laser direct structuring (LDS) molding compound layer.
10. The semiconductor device according to claim 9, characterized in that The other conductive path segment comprises: trace and via openings formed in the LDS mold compound layer by LDS processing; and Conductive structures at the trace and via openings.
Citation Information
Patent Citations
Method of manufacturing semiconductor devices and corresponding product
US20180342453A1
Method of manufacturing semiconductor devices, corresponding device and circuit
US20190115287A1
Method of manufacturing semiconductor devices and corresponding semiconductor device
US20200203264A1
Method of manufacturing leadframes for semiconductor devices, corresponding leadframe and semicondctor device
US20200321274A1
Method of manufacturing semiconductor devices and corresponding semiconductor device
US20210050226A1