Patent Publication Number: US-2023142384-A1

Title: Fully molded bridge interposer and method of making the same

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This is a continuation of U.S. Utility patent application Ser. No. 17/581,704, entitled “Fully Molded Bridge Interposer and Method of Making the Same,” which was filed on Jan. 21, 2022, which application claims the benefit, including the filing date, of U.S. Provisional Patent No. 63/141,945, entitled “Fully Molded Bridge Interposer and Method of Making the Same,” which was filed on Jan. 26, 2021, the disclosures of which are hereby incorporated herein by this reference. 
    
    
     TECHNICAL FIELD 
     This disclosure relates to a fully molded bridge interposer and methods of making the same. 
     BACKGROUND 
     Semiconductor devices are commonly found in modern electronic products. Semiconductor devices vary in the number and density of electrical components. Discrete semiconductor devices generally contain one type of electrical component, for example, light emitting diode (LED), small signal transistor, resistor, capacitor, inductor, and power metal oxide semiconductor field effect transistor (MOSFET). Integrated semiconductor devices typically contain hundreds to millions of electrical components. Examples of integrated semiconductor devices include microcontrollers, microprocessors, memories, analog to digital or digital to analog converters, power management and charged-coupled devices (CCDs), as well as microelectromechanical systems (MEMS) devices including digital micro-mirror devices (DMDs). 
     Semiconductor devices perform a wide range of functions such as signal processing, high-speed calculations, transmitting and receiving electromagnetic signals, controlling electronic devices, storing information, and creating visual projections for displays. Semiconductor devices are found in many fields of entertainment, communications, power conversion, networks, computers, and consumer products. Semiconductor devices are also found in military applications, aviation, automotive, industrial controllers, and office equipment. 
     Semiconductor devices exploit the electrical properties of semiconductor materials. The atomic structure of semiconductor material allows its electrical conductivity to be manipulated by the application of an electric field or base current or through the process of doping. Doping introduces impurities into the semiconductor material to manipulate and control the conductivity of the semiconductor device. 
     A semiconductor device contains active and passive electrical structures. Active structures, including bipolar, complementary metal oxide semiconductors, and field effect transistors, control the flow of electrical current. By varying levels of doping and application of an electric field or base current, the transistor either promotes or restricts the flow of electrical current. Passive structures, including resistors, capacitors, and inductors, create a relationship between voltage and current necessary to perform a variety of electrical functions. The passive and active structures are electrically connected to form circuits, which enable the semiconductor device to perform high-speed calculations and other useful functions. 
     Semiconductor devices are generally manufactured using two complex manufacturing processes, that is, front-end manufacturing, and back-end manufacturing, each involving potentially hundreds of steps. Front-end manufacturing involves the formation of a plurality of semiconductor die on the surface of a semiconductor wafer. Each semiconductor die is typically identical and contains circuits formed by electrically connecting active and passive components. Back-end manufacturing involves singulating individual semiconductor die from the finished wafer and packaging the die to provide structural support and environmental isolation. More recently, back-end manufacturing has been expanded to included emerging technology that allows multiple semiconductor die to be interconnected within a single package or device unit, thereby expanding the conventional definition of back-end technology. The term “semiconductor die” as used herein refers to both the singular and plural form of the words, and accordingly can refer to both a single semiconductor device and multiple semiconductor devices. 
     One goal of semiconductor manufacturing is to produce smaller semiconductor devices. Smaller devices typically consume less power, have higher performance, can be produced more efficiently, have a smaller form factor, and may be less cumbersome when integrated within wearable electronics, portable handheld communication devices, such as phones, and in other applications. In other words, smaller semiconductor devices may have a smaller footprint, a reduced height, or both, which is desirable for smaller end products. A smaller semiconductor die size can be achieved by improvements in the front-end process resulting in semiconductor die with smaller, higher density active and passive components. Back-end processes may result in semiconductor device packages with a smaller footprint by improvements in electrical interconnection and packaging materials. 
     SUMMARY 
     An opportunity exists for improved semiconductor manufacturing, packaging, and devices. Accordingly, in an aspect of the disclosure, a semiconductor device may comprise a molded bridge interposer, further comprising a bridge die comprising ultra-high density copper studs with a pitch of less than or equal to 60 μm. Copper posts may be disposed in a periphery of the bridge die and comprise a height greater than or equal to a height of the bridge die and the copper studs. An encapsulant may be disposed on five sides of the bridge die, on sides of the copper studs, and on sides of the copper posts that leave ends of the copper studs and opposing first and second ends of the copper posts exposed from the encapsulant. A backside build-up interconnect structure may be formed over a backside of the bridge die and coupled to first ends of the copper posts. A frontside build-up interconnect structure may be formed over the copper studs of the bridge die and coupled to second ends of the copper posts opposite the first ends of the copper posts. The frontside build-up interconnect structure may comprise ultra-high density pads within a footprint of the bridge die with a pitch less than 60 μm and high density pads with a pitch of greater than or equal to 60 μm outside a footprint of the bridge die. A first via layer of the frontside build-up interconnect structure comprises vias aligned to centers of the copper studs with an r 2  value greater than 0.5 relative to difference between an offset between a first side of the bridge die and a copper post adjacent the first side of the bridge die and a second offset between a second side of the bridge die opposite the first side of the bridge die and a copper post adjacent the second side of the bridge die for a lot of devices. A first component may comprise a system on chip (SOC) integrated circuit, memory, memory controller or high bandwidth memory (HBM) controller, voltage regulator, a serializer/deserializer (SERDES), or active semiconductor die. The first component may comprise ultra-high density interconnects coupled with a first portion of the ultra-high density pads within a footprint of the bridge die, and high density interconnects coupled with a first portion of the high density pads outside a footprint of the bridge die. A second component comprising a SOC integrated circuit, memory controller or HBM controller, voltage regulator, SERDES, or active semiconductor die. The second component comprising ultra-high density interconnects coupled with a second portion of the ultra-high density pads within a footprint of the bridge die, and high density interconnects coupled with a second portion of the high density pads outside a footprint of the bridge die. 
     Particular embodiments of the semiconductor device may further comprise a second bridge die disposed within the molded bridge interposer. The bridge die may further comprise the high density copper studs formed with a pitch of less than or equal 60 μm. The copper posts may be disposed in a periphery of the bridge die at a pitch of 250 μm or less. The molded bridge interposer is disposed over, and is coupled to, a package substrate, a printed circuit board (PCB), a multilayer ceramic capacitors (MLCC), or a passive device. 
     According to an aspect of the disclosure, a semiconductor device may comprise a bridge die comprising copper studs. Copper posts may be disposed in a periphery of the bridge die. An encapsulant may be disposed on five sides of the bridge die, on sides of the copper studs, and on sides of the copper posts that leave ends of the copper studs and opposing first and second ends of the copper posts exposed from the encapsulant. A frontside build-up interconnect structure may be formed over the copper studs of the bridge die and coupled to second ends of the copper posts opposite the first ends of the copper posts. The frontside build-up interconnect structure comprising first pads at a first pitch within a footprint of the bridge die and second pads at a second pitch outside a footprint of the bridge die. 
     In another aspect, particular embodiments of the semiconductor device may comprise a first component comprising a SOC integrated circuit, memory controller or HBM controller, voltage regulator, a SERDES, or active semiconductor die, the first component comprising, the first semiconductor device comprising high density interconnects coupled with a first portion of the high density pads, and low density interconnects coupled with a first portion of the low density pads. A second component comprising a SOC integrated circuit, memory controller or HBM controller, voltage regulator, a SERDES, or active semiconductor die, the second component comprising, the second semiconductor device comprising high density interconnects coupled with a second portion of the high density pads, and low density interconnects coupled with a second portion of the low density pads. The semiconductor device may further comprise a backside build-up interconnect structure formed over a backside of the bridge die and coupled to first ends of the copper posts. The first pitch may be less than or equal to 60 μm and the first pitch may be at least 1.5 times less than the second pitch. 
     The copper posts may comprise a height greater than or equal to a height of the bridge die and the copper studs. For a lot of devices, a first via layer of the frontside build-up interconnect structure may comprise vias aligned to centers of the copper studs with an r 2  value greater than 0.5 relative to difference between an offset between a first side of the bridge die and an copper post adjacent the first side of the bridge die and a second offset between a second side of the bridge die opposite the first side of the bridge die and a copper post adjacent the second side of the bridge die. The bridge die may be formed as an active device. The bridge die may be formed with conductive redistribution layers coupled to the copper studs of the bridge die. 
     According to an aspect of the disclosure, a method of making a semiconductor device may comprise providing a carrier, and disposing copper posts in a periphery of the bridge die. The method may include disposing a bridge die over the carrier, the bridge die comprising copper studs. The method may include forming an encapsulant disposed on five sides of the bridge die, on sides of the copper studs, and on sides of the copper posts that leave ends of the copper studs and opposing first and second ends of the copper posts exposed from the encapsulant. Together, the bridge die, copper posts, and encapsulant form a molded bridge interposer. The method may further comprise forming a frontside build-up interconnect structure over the copper studs of the bridge die and coupled to second ends of the copper posts opposite the first ends of the copper posts. The frontside build-up interconnect structure may comprise first pads at a first pitch within a footprint of the bridge die and second pads at a second pitch outside a footprint of the bridge die. The first pitch may be at least two times less than the second pitch. 
     In another aspect, particular embodiments of the method of making a semiconductor device may comprise removing at least a portion of the carrier and removing a portion of the encapsulant from over the copper posts and the copper studs. A pitch of the copper studs may be less than or equal to 60 μm, and the first pitch may be at least 1.5 times less than the second pitch. The method may further comprise forming a backside build-up interconnect structure formed over the temporary carrier before disposing the bridge die over the temporary carrier and over the backside build-up interconnect structure. The method may include coupling a first component comprising a SOC integrated circuit, memory controller or HBM controller, voltage regulator, a SERDES, or active semiconductor die to the molded bridge interposer. The first component may comprise interconnects coupled with a first portion of the first pads, and lower density interconnects coupled with a first portion of the second pads. The method may include coupling a second component comprising a SOC integrated circuit, memory controller or HBM controller, voltage regulator, a SERDES, or active semiconductor die. The second component may comprise interconnects coupled with a second portion of the first pads, and lower density interconnects coupled with a second portion of the second pads. For a lot of devices, a first via layer of the frontside build-up interconnect structure may comprise vias aligned to centers of the copper studs with an r 2  value greater than 0.5 relative to difference between an offset between a first side of the bridge die and an copper post adjacent the first side of the bridge die and a second offset between a second side of the bridge die opposite the first side of the bridge die and a copper post adjacent the second side of the bridge die. 
     The foregoing and other aspects, features, applications, and advantages will be apparent to those of ordinary skill in the art from the specification, drawings, and the claims. Unless specifically noted, it is intended that the words and phrases in the specification and the claims be given their plain, ordinary, and accustomed meaning to those of ordinary skill in the applicable arts. The inventors are fully aware that he can be his own lexicographer if desired. The inventors expressly elect, as their own lexicographers, to use only the plain and ordinary meaning of terms in the specification and claims unless they clearly state otherwise and then further, expressly set forth the “special” definition of that term and explain how it differs from the plain and ordinary meaning. Absent such clear statements of intent to apply a “special” definition, it is the inventors&#39; intent and desire that the simple, plain and ordinary meaning to the terms be applied to the interpretation of the specification and claims. 
     The inventors are also aware of the normal precepts of English grammar. Thus, if a noun, term, or phrase is intended to be further characterized, specified, or narrowed in some way, then such noun, term, or phrase will expressly include additional adjectives, descriptive terms, or other modifiers in accordance with the normal precepts of English grammar. Absent the use of such adjectives, descriptive terms, or modifiers, it is the intent that such nouns, terms, or phrases be given their plain, and ordinary English meaning to those skilled in the applicable arts as set forth above. 
     Further, the inventors are fully informed of the standards and application of the special provisions of 35 U.S.C. § 112(f). Thus, the use of the words “function,” “means” or “step” in the Detailed Description or Description of the Drawings or claims is not intended to somehow indicate a desire to invoke the special provisions of 35 U.S.C. § 112(f), to define the invention. To the contrary, if the provisions of 35 U.S.C. § 112(f) are sought to be invoked to define the inventions, the claims will specifically and expressly state the exact phrases “means for” or “step for”, and will also recite the word “function” (i.e., will state “means for performing the function of [insert function]”), without also reciting in such phrases any structure, material or act in support of the function. Thus, even when the claims recite a “means for performing the function of . . . ” or “step for performing the function of . . . ,” if the claims also recite any structure, material or acts in support of that means or step, or that perform the recited function, then it is the clear intention of the inventors not to invoke the provisions of 35 U.S.C. § 112(f). Moreover, even if the provisions of 35 U.S.C. § 112(f) are invoked to define the claimed aspects, it is intended that these aspects not be limited only to the specific structure, material or acts that are described in the preferred embodiments, but in addition, include any and all structures, materials or acts that perform the claimed function as described in alternative embodiments or forms of the disclosure, or that are well known present or later-developed, equivalent structures, material or acts for performing the claimed function. 
     The foregoing and other aspects, features, and advantages will be apparent to those of ordinary skill in the art from the specification, drawings, and the claims. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIGS.  1 A- 1 F  illustrate existing semiconductor device designs including bridge interconnects. 
         FIGS.  2 A- 2 C  illustrate various structures comprising interconnect components or chiplets. 
         FIGS.  3 A- 3 C  illustrate bridge die comprising electrical interconnects being singulated from a native wafer. 
         FIGS.  4 A- 4 H  illustrate the formation of fully molded bridge interposer comprising the bridge die of  FIGS.  3 A- 3 C . 
         FIGS.  5 A- 5 C  illustrate various aspects of fully molded semiconductor structures comprising bridge die as part of a chiplet arrangement and mounted to a substrate. 
     
    
    
     DETAILED DESCRIPTION 
     This disclosure relates to fully molded semiconductor structures, devices, and packages, and more particularly to a fully molded bridge interposer. In some instances, the fully molded semiconductor structures may comprise routing for semiconductor devices comprising different pitches, such as high density and ultra-high density as described more fully herein. 
     The fully molded semiconductor structures or bridge interposer (and method for making and using the same) may comprise, or provide: (i) a simplified supply chain, (ii) when compared with a conventional interposer—removing a need for an expensive large silicon die with through silicon vias (TSVs), which can be very large die that are very expensive because (at least in part) because of TSV technology, (iii) when compared with Intel&#39;s Embedded Multi-die Interconnect Bridge (EMIB) technology, providing the advantage of no need for specialized substate technology—a enabling or facilitating the use of a low-cost substrate, (iv) improved electrical performance from using plated Cu Post vs TSVs, (v) have available ultra-high density connections (of or about a 10 μm area array bond pad pitch) where bridge die are embedded, high density (of or about a 20 μm area array bond pad pitch) elsewhere, and (vi) high density connections between bridge die and other devices or packages. 
     At least some of the above advantages are available at least in part by using unit specific patterning (such as patterning (custom lithography) and build up interconnect structures such as a frontside build-up interconnect structure, which is also known under the trademark “Adaptive Patterning”) with respect the bridge die. Unit specific patterning: (i) allows to use high-speed chip attach for bridge die and AP will ensure alignment for high density interconnects between M-Series interposer and attached devices, (ii) aligns via to Cu Studs allowing largest contact vias with smallest studs (fine pitch), (iii) with respect to an interposer makes the molded bridge interposer including a frontside build-up interconnect structure much cheaper that a giant interposer die, (iv) with respect to EMIB, vias can be large compared to stud size and capture pad size, lithography defined vias (not laser drilled), (v) allows connections between devices inside the molded bridge interposer with unit specific patterning or routing to compensate for die shift (including bridge die shift) between embedded devices, which may include memory controllers, voltage regulators, SERDES, etc., and (vi) make embedding active devices more useful. 
     This disclosure, its aspects and implementations, are not limited to the specific package types, material types, or other system component examples, or methods disclosed herein. Many additional components, manufacturing and assembly procedures known in the art consistent with semiconductor manufacture and packaging are contemplated for use with particular implementations from this disclosure. Accordingly, for example, although particular implementations are disclosed, such implementations and implementing components may comprise any components, models, types, materials, versions, quantities, and/or the like as is known in the art for such systems and implementing components, consistent with the intended operation. 
     The word “exemplary,” “example” or various forms thereof are used herein to mean serving as an example, instance, or illustration. Any aspect or design described herein as “exemplary” or as an “example” is not necessarily to be construed as preferred or advantageous over other aspects or designs. Furthermore, examples are provided solely for purposes of clarity and understanding and are not meant to limit or restrict the disclosed subject matter or relevant portions of this disclosure in any manner. It is to be appreciated that a myriad of additional or alternate examples of varying scope could have been presented, but have been omitted for purposes of brevity. 
     Where the following examples, embodiments and implementations reference examples, it should be understood by those of ordinary skill in the art that other manufacturing devices and examples could be intermixed or substituted with those provided. In places where the description above refers to particular embodiments, it should be readily apparent that a number of modifications may be made without departing from the spirit thereof and that these embodiments and implementations may be applied to other technologies as well. Accordingly, the disclosed subject matter is intended to embrace all such alterations, modifications and variations that fall within the spirit and scope of the disclosure and the knowledge of one of ordinary skill in the art. 
     Semiconductor devices are generally manufactured using two complex manufacturing processes: front-end manufacturing and back-end manufacturing. Front-end manufacturing involves the formation of a plurality of die on the surface of a semiconductor wafer. Each die on the wafer contains active and passive electrical components, which are electrically connected to form functional electrical circuits. Active electrical components, such as transistors and diodes, have the ability to control the flow of electrical current. Passive electrical components, such as capacitors, inductors, resistors, and transformers, create a relationship between voltage and current necessary to perform electrical circuit functions. 
     Passive and active components are formed over the surface of the semiconductor wafer by a series of process steps including doping, deposition, photolithography, etching, and planarization. Doping introduces impurities into the semiconductor material by techniques such as ion implantation or thermal diffusion. The doping process modifies the electrical conductivity of semiconductor material in active devices, transforming the semiconductor material into an insulator, conductor, or dynamically changing the semiconductor material conductivity in response to an electric field or base current. Transistors contain regions of varying types and degrees of doping arranged as necessary to enable the transistor to promote or restrict the flow of electrical current upon the application of the electric field or base current. 
     Active and passive components are formed by layers of materials with different electrical properties. The layers can be formed by a variety of deposition techniques determined in part by the type of material being deposited. For example, thin film deposition can involve chemical vapor deposition (CVD), physical vapor deposition (PVD), electrolytic plating, and electroless plating processes. Each layer is generally patterned to form portions of active components, passive components, or electrical connections between components. 
     The layers can be patterned using photolithography, which involves the deposition of light sensitive material, e.g., photoresist, over the layer to be patterned. A pattern is transferred from a photomask to the photoresist using light. In one embodiment, the portion of the photoresist pattern subjected to light is removed using a solvent, exposing portions of the underlying layer to be patterned. In another embodiment, the portion of the photoresist pattern not subjected to light, the negative photoresist, is removed using a solvent, exposing portions of the underlying layer to be patterned. The remainder of the photoresist is removed, such as by a stripping process, leaving behind a patterned layer. Alternatively, some types of materials are patterned by directly depositing the material into the areas or voids formed by a previous deposition/etch process using techniques such as electroless and electrolytic plating. 
     Patterning is the basic operation by which portions of the photoresist material are partially removed, so as to provide a pattern or electroplating template for the subsequent formation of structures, such as patterning redistribution layers (RDLs), under bump mentalization (UBM), copper posts, vertical interconnects, or other desirable structures. Portions of the semiconductor wafer can be removed using photolithography, photomasking, masking, oxide or metal removal, photography and stenciling, and microlithography. Photolithography includes forming a pattern in reticles or a photomask and transferring the pattern into the surface layers of the semiconductor wafer. Photolithography forms the horizontal dimensions of active and passive components on the surface of the semiconductor wafer in a two-step process. First, the pattern on the reticle, masks, or direct write imaging design file are transferred into a layer of photoresist. Photoresist is a light-sensitive material that undergoes changes in structure and properties when exposed to light. The process of changing the structure and properties of the photoresist occurs as either negative-acting photoresist or positive-acting photoresist. Second, the photoresist layer is transferred into the wafer surface. The transfer occurs when etching removes or electroplating adds the portion of the top layers of semiconductor wafer not covered by the photoresist. The chemistry of photoresists is such that the photoresist remains substantially intact and resists removal by chemical etching solutions while the portion of the top layers of the semiconductor wafer not covered by the photoresist is removed by etching or a layer is added by electroplating. The process of forming, exposing, and removing the photoresist, as well as the process of removing or adding a portion of the semiconductor wafer can be modified according to the particular resist used and the desired results. Negative or positive tones resist can be designed for solvent or base develop solutions. 
     In negative-acting photoresists, photoresist is exposed to light and is changed from a soluble condition to an insoluble condition in a process known as polymerization. In polymerization, unpolymerized material is exposed to a light or energy source and polymers form a cross-linked material that is etch-resistant. In most negative resists, the polymers are polyisopremes. Removing the soluble portions (i.e. the portions not exposed to light) with chemical solvents or base developers leaves a hole in the resist layer that corresponds to the opaque pattern on the reticle. A mask whose pattern exists in the opaque regions is called a clear-field mask. 
     In positive-acting photoresists, photoresist is exposed to light and is changed from relatively nonsoluble condition to much more soluble condition in a process known as photosolubilization. In photosolubilization, the relatively insoluble resist is exposed to the proper light energy and is converted to a more soluble state. The photosolubilized part of the resist can be removed by a solvent or a base in the development process. The basic positive photoresist polymer is the phenol-formaldehyde polymer, also called the phenol-formaldehyde novolak resin. Removing the soluble portions (i.e. the portions exposed to light) with chemical solvents or base developers leaves a hole in the resist layer that corresponds to the transparent pattern on the reticle. A mask whose pattern exists in the transparent regions is called a dark-field mask. 
     After removal of the top portion of the semiconductor wafer not covered by the photoresist, the remainder of the photoresist is removed, leaving behind a patterned layer. Alternatively, some types of materials are patterned by directly depositing the material into the areas or voids formed by a previous deposition/etch process using techniques such as electroless and electrolytic plating. 
     Depositing a thin film of material over an existing pattern can exaggerate the underlying pattern and create a non-uniformly flat surface. A uniformly flat surface can be beneficial or required to produce smaller and more densely packed active and passive components. Planarization can be used to remove material from the surface of the wafer and produce a uniformly flat surface. Planarization involves polishing the surface of the wafer with a polishing pad. An abrasive material and corrosive chemical are added to the surface of the wafer during polishing. Alternatively, mechanical abrasion without the use of corrosive chemicals is used for planarization. In some embodiments, purely mechanical abrasion is achieved by using a belt grinding machine, a standard wafer backgrinder, or other similar machine. The combined mechanical action of the abrasive and corrosive action of the chemical removes any irregular topography, resulting in a uniformly flat surface. 
     Back-end manufacturing refers to cutting or singulating the finished wafer into the individual semiconductor die and then packaging the semiconductor die for structural support and environmental isolation. To singulate the semiconductor die, the wafer can be cut along non-functional regions of the wafer called saw streets or scribes. The wafer is singulated using a laser cutting tool, laser silicon lattice disruption process or saw blade. After singulation, the individual semiconductor die are mounted to a package substrate that includes pins or contact pads for interconnection with other system components. Contact pads formed over the semiconductor die are then connected to contact pads within the package. The electrical connections can be made with solder bumps, stud bumps, conductive paste, redistribution layers, or wirebonds. An encapsulant or other molding material is deposited over the package to provide physical support and electrical isolation. The finished package is then inserted into an electrical system and the functionality of the semiconductor device is made available to the other system components. 
     Back-end manufacturing as disclosed herein also does more than merely packaging an embedded device or the semiconductor die for structural support and environmental isolation. The packaging described herein further provides non-monolithic electrical interconnection of die for increased functionality &amp; performance. Previously, nearly all advanced semiconductor die were monolithic systems on chips (SoCs) where all electrical interconnect occurred on the silicon wafer during front-end processing. Now, however, work that was traditionally the domain of front-end domain work may be handled or moved to the back-end manufacturing, allowing many semiconductor die (chiplets) to be connected with packaging technology to form a chiplet-based SoC (which is non monolithic) and provides a composite package with greater functionality. The chiplet approach may also decrease waste from defects, increase production efficiency, reliability, and performance. 
     The electrical system can be a stand-alone system that uses the semiconductor device to perform one or more electrical functions. Alternatively, the electrical system can be a subcomponent of a larger system. For example, the electrical system can be part of a portable hand-held electronic device, such as smart phone, a wearable electronic device, or other video or electronic communication device. Additionally, the electrical system may comprise a graphics component, network interface component, or other signal processing component that can be inserted into a computer or electronics device and may assist with such functions as mobile computing, artificial intelligence, and autonomous functions such as autonomous driving. The semiconductor package can include microprocessors, memories, application specific integrated circuits (ASIC), logic circuits, analog circuits, RF circuits, discrete devices, or other semiconductor die or electrical components. Miniaturization and weight reduction can be beneficial or essential for the products to be accepted by the market. The distance between semiconductor devices must be decreased to achieve higher density. 
     By combining one or more semiconductor devices, structures, or packages with fan-out technology, manufacturers can incorporate multiple components or elements into more highly compact and integrated electronic devices and systems. Because the semiconductor devices include sophisticated functionality, electronic devices can be manufactured less expensively and as part of a streamlined manufacturing process. The resulting devices are less likely to fail and less expensive to manufacture resulting in a lower cost for consumers. 
       FIGS.  1 A- 1 F  show prior art relative to connecting multiple semiconductor die or semiconductor packages together, that may be used for high intensity or high demand computing, such as computing utilizing or dealing with graphics cards.  FIG.  1 A  illustrates an existing packaging technology or structure  10  comprising a graphics processing unit (GPU  12 ) coupled to an HBM controller die  14  with bumps or microbumps  15  and through a silicon interposer  16  comprising silicon vias formed in, and extending therethrough. The silicon interposer  16  may then be disposed over and coupled to a package substrate  18 , with conductive or solder interconnects, bumps, or balls  17 . The package substrate  18  may then be disposed over and coupled to a graphics card or PCB  20  with conductive or solder interconnects, bumps, or balls  22 . The graphics card  20  may comprise a multi-layer PCB, and the conductive bumps  20  may be used for: display connections, electrical current, as well as for peripheral component interconnect express (PCIe) interconnections or high-speed serial computer expansion bus connections. 
       FIG.  1 B  illustrates a representation of a cross-section structure  11  that could be seen by a scanning electron microscope (SEM) of an HBM  14  stacked on-and coupled to-a silicon interposer  16 , which may further be coupled to a substrate, PCB, or graphics card  20 . The structure  11  integrates HBM memories  14  (which may comprise DRAM die and Logic Die connected with via-middle TSV and micro-bumps) and the GPU  12  stacked onto the silicon interposer  16 , wherein the silicon interposer  16  comprises via-middle through silicon vias (TSVs). 
       FIGS.  1 C- 1 F  illustrates an existing technology of Intel&#39;s Embedded Multi-die Interconnect Bridge (EMIB)  30 , that was developed to provide a cost-effective approach to in-package high density interconnect of heterogeneous chips or semiconductor die  32 . 
       FIG.  1 C  illustrates the EMIB  30  embedded in a cavity  34  of an organic substrate  36 , the EMIB  30  comprises conductive pads or contact pads  38  coupled together with a conductive redistribution layer (RDL)  40 .  FIG.  1 D  illustrates resin  42  formed over the EMIB  30 , and vias  44  formed in, or extending through, the resin  42  with the vias  44  further coupled with the EMIB  30 . RDLs  46  may be formed over the resin  42  and over the EMIB  30  and coupled with the vias  44  for lateral connection that extend from the EMIB  30  and vias  44  to mounting sites  48  for heterogeneous chips  32 .  FIG.  1 E  illustrates additional vias  44  and layers of resin  42  formed over the EMIB  30  with contact pads for microbumps  50  formed over the EMIB  30  and contact pads for ordinary bumps  52  formed at semiconductor die mounting sites  48 .  FIG.  1 F  illustrates a first semiconductor die  32   a  on the left and a second semiconductor die  32   b  on the right, each mounted over respective semiconductor die sites  48  with microbumps  54  and ordinary bumps  56  and RDLs  40 ,  46  and vias  44  for routing of signals and interconnections for the semiconductor die  32   a,    32   b  being routed through the organic substrate  36  and through the EMIB  30 . 
       FIGS.  2 A- 2 C  illustrate a chiplet  60  or grouping of multiple semiconductor die, semiconductor chips, or semiconductor devices  62  interconnected and molded together.  FIG.  2 A  illustrates a chiplet  60  (without encapsulant) comprising a central, larger, semiconductor die, semiconductor chip, or semiconductor device  62 , with multiple, additional, smaller semiconductor die  64  to show the multiple semiconductor die, semiconductor chips, or semiconductor devices  64  disposed around and grouped together with semiconductor device  62 , such as in a fan-out arrangement. Chip type or function of the various semiconductor die  62 ,  64  within the chiplet  60  may comprise a central processing unit (CPU), a modem, a graphics processing unit (GPU), chips, semiconductor die, or processors specialized for running artificial intelligence (AI) algorithms, chips, semiconductor die or processors specialized for input/output (I/O), Serializer/Deserializer (SERDES) devices, and various other memory devices such as chips or semiconductor die specialized for Cache or storing data, and chips specialized for high bandwidth memory (HBM) or high-speed computer memory.  FIGS.  2 B and  2 C  illustrate the same or similar chiplet  60  shown in  FIG.  2 A  overmolded with encapsulant material and in a fan-out arrangement. In  FIG.  2 C , the overmolded semiconductor die chiplet  60  is coupled to, or disposed over (or on) a substrate or package substrate  66 , which may be further coupled to, or mounted on, a motherboard, a printed circuit board (PCB), an interposer, or another semiconductor device or package. The method and device described herein may be advantageously used for applications in which the device is mounted to a substrate, and may also be used for instances in which it is not mounted to a substrate, like for applications within a handheld mobile electronic device, such as a smartphone or other wearable technology. 
       FIGS.  3 A- 3 C  show various views of a semiconductor wafer  110  and the formation and separation of individual semiconductor die  114  therefrom.  FIG.  3 A  illustrates a plan view of a semiconductor wafer or native wafer  110  with a base substrate material  112 , such as, without limitation, silicon, germanium, gallium arsenide, indium phosphide, or silicon carbide, for structural support. A plurality of semiconductor die or components  114  can be formed on wafer  110  separated by a non-active, inter-die wafer area or saw street  116  as described above. The saw street  116  can provide cutting areas to singulate the semiconductor wafer  110  into the individual semiconductor die  114 . 
     Each semiconductor die  114  may comprise a backside or back surface  118  and an active surface  120  opposite the backside  118 . The active surface  120  may contain analog or digital circuits implemented as active devices, passive devices, conductive layers, and dielectric layers formed within the die and electrically interconnected according to the electrical design and function of the semiconductor die  114 . For example, the circuit may include one or more transistors, diodes, and other circuit elements formed within active surface to implement analog circuits or digital circuits, such as DSP, ASIC, memory, or other signal processing circuits. The semiconductor die  114  may also contain IPDs such as inductors, capacitors, and resistors, such as for power management, RF signal processing, and clocking or other functions. The semiconductor die  114  may be formed on a native wafer in a wafer level process as one of many packages being formed simultaneously on a carrier. In other instances, the semiconductor die  114  may be formed as part of a reconstituted wafer, and may comprise multiple die molded together. The semiconductor die  114  may also be another suitable embedded device, which is subsequently formed within the fully-molded bride interposer  300 , and surrounded (partially or entirely) by encapsulant  256 . The semiconductor die  114  within the fully molded bridge interposer  300  may be an active die, a bridge die, and in other instances may be formed without an active surface, and with copper studs of the bridge die electrically connected or coupled with wiring, routing, or RDLs. 
       FIG.  3 B . illustrates a cross sectional sideview of the wafer  110 , as shown taken along the section line  3 B- 3 B in  FIG.  3 A .  FIG.  3 B  also illustrates an optional dielectric, insulating. or passivation layer  126  conformally applied over the active surface  120  and over conductive layer  122 . Insulating layer  126  can include one or more layers that are applied using PVD, CVD, screen printing, spin coating, spray coating, sintering, thermal oxidation, or other suitable process. Insulating layer  126  can contain, without limitation, one or more layers of silicon dioxide (SiO 2 ), silicon nitride (Si 3 N 4 ), silicon oxynitride (SiON), tantalum pentoxide (Ta 2 O 5 ), aluminum oxide (Al 2 O 3 ), polymer, polyimide, benzocyclobutene (BCB), polybenzoxazoles (PBO), or other material having similar insulating and structural properties. Alternatively, semiconductor die  114  are packaged without the use of any PBO layers, and insulating layer  126  can be formed of a different material or omitted entirely. In another embodiment, insulating layer  126  includes a passivation layer formed over the active surface  120  without being disposed over conductive layer  122 . When insulating layer  126  is present and formed over conductive layer  122 , openings are formed completely through insulating layer  126  to expose at least a portion of conductive layer  122  for subsequent mechanical and electrical interconnection. Alternatively, when insulating layer  126  is omitted, conductive layer  122  is exposed for subsequent electrical interconnection without the formation of openings. 
       FIG.  3 B  also illustrates conductive bumps, conductive interconnects, or electrical interconnect structures  128  that can be formed as columns, pillars, posts, thick RDLs, bumps, or studs that are formed of copper or other suitable conductive material, which are disposed over, and coupled or connected to, conductive layer  122 . When formed as posts  128 , the posts will have a height greater than a thickness, whereas a pillar has a tin cap and a stud is wider than it is tall. Conductive bumps  128  can be formed directly on conductive layer  122  using patterning and metal deposition processes such as printing, PVD, CVD, sputtering, electrolytic plating, electroless plating, metal evaporation, metal sputtering, or other suitable metal deposition process. Conductive bumps  128  can be one or more layers of Al, Cu, Sn, Ni, Au, Ag, palladium (Pd), or other suitable electrically conductive material and can include one or more layers. In some instances, one or more UBM layers of Al, Cu, Sn, Ni, Au, Ag, Pd, or other suitable electrically conductive material can optionally be disposed between conductive layer  122  and conductive bumps  128 . In some embodiments, conductive bumps  128  can be formed by depositing a photoresist layer over the semiconductor die  114  and conductive layer  122  while the semiconductor die  114  are part of the semiconductor wafer  110 . A portion of the photoresist layer can be exposed and removed by an etching development process, and the conductive bumps  128  can be formed as copper pillars in the removed portion of the photoresist and over conductive layer  122  using a selective plating process. The photoresist layer can be removed leaving conductive bumps  128  that provide for subsequent mechanical and electrical interconnection and a standoff with respect to active surface  120 . Conductive bumps  128  can include a height H 1  in a range of 5-100 micrometers (μm) or a height in a range of 20-50 μm, or a height of about 25 μm. 
       FIG.  3 B  also illustrates the semiconductor wafer  110  can undergo an optional grinding operation with a grinder  129  to planarize the surface and reduce a thickness of the semiconductor wafer  110 . A chemical etch can also be used to remove and planarize a portion of the semiconductor wafer  110 . 
       FIG.  3 C  illustrates attaching a die attach film (DAF)  130  to the semiconductor wafer  110  that can be disposed over, and in direct contact with, the backsides  118  of the semiconductor die  114 . The DAF  130  can comprise epoxy, thermal epoxy, epoxy resin, B-stage epoxy laminating film, ultraviolet (UV) B-stage film adhesive layer, UV B-stage film adhesive layer including acrylic polymer, thermo-setting adhesive film layer, a suitable wafer backside coating, epoxy resin with organic filler, silica filler, or polymer filler, acrylate based adhesive, epoxy-acrylate adhesive, a polyimide (PI) based adhesive, or other adhesive material. 
       FIG.  3 C  also illustrates semiconductor wafer  110  can be singulated through gaps or saw streets  116  using laser grooving, a saw blade or laser cutting tool  132 , or both to singulate the semiconductor wafer  110  into individual semiconductor die  114  with conductive bumps  128 . The semiconductor die  114  can then be used as part of a subsequently formed semiconductor component package as discussed in greater detail below with respect to  FIGS.  4 A- 4 H . 
       FIGS.  4 A- 5 C , illustrate a structure, method, process flow for forming the semiconductor device or molded bridge interposer that may comprise a bridge die and peripheral posts.  FIG.  4 A  illustrates providing a temporary carrier or substrate  140 , on which subsequent processing of the fully-molded bridge interposer  300  can occur, as described in greater detail herein. Carrier  140  may be a temporary or sacrificial carrier or substrate, and in other instances may be or a reusable carrier or substrate. The carrier  140  may be of any desirable or suitable size, including a circular shape comprising a diameter of 300 mm. 
     The carrier  140  can contain one or more base materials formed in one or more layers, which may comprise base materials such as metal, silicon, polymer, polymer composite, ceramic, perforated ceramic, glass, glass epoxy, stainless steel, mold compound, mold compound with filler, or other suitable low-cost, rigid material or bulk semiconductor material for structural support. When a UV release is used with a temporary carrier  140 , the carrier  140  may comprise one or more transparent or translucent materials, such as glass. When a thermal release is used with a temporary carrier  140 , the carrier  140  may comprise opaque materials. The carrier  140  can be circular, square, rectangular, or other suitable or desirable shape and can include any desirable size, such as a size equal to, similar to, or slightly larger or smaller than a reconstituted wafer or panel that is subsequently formed on or over the carrier  140 . In some instances, a diameter, length, or width of the temporary carrier can be equal to, or about, 200 millimeters (mm), 300 mm, or more. 
     The carrier  140  can comprise a plurality of semiconductor die mounting sites or die attach areas  142  spaced or disposed across a surface of the carrier  140 , according to a design and configuration of the final fully-molded bridge interposer semiconductor devices  300 , to provide a peripheral area or space  143 . The peripheral area  143  can partially or completely surround the die attach areas  142  to provide space for subsequent vertical, through package interconnections, and an area for fan-out routing or build-up interconnect structures. For example, the peripheral area  143  can surround, or be offset from, one side of the semiconductor die  114 , or more than one side of the semiconductor die  114 , such as 2, 3, 4, or more sides of the semiconductor die  114 . 
     When a temporary carrier  140  is used, an optional release layer, interface layer or double-sided tape  144  can be formed over carrier  140  as a temporary adhesive bonding film or etch-stop layer. The release layer  144  may be a film or laminate, and may also be applied by spin coating or other suitable process. The temporary carrier can be subsequently removed by strip etching, chemical etching, mechanical peel-off, CMP, plasma etching, thermal, light releasing process, mechanical grinding, thermal bake, laser scanning, UV light, or wet stripping. 
       FIG.  4 A  further illustrates forming a build-up interconnect structure  170  over the carrier  140  to electrically connect, and provide routing between, conductive interconnects  252 , the conductive bumps  128 , and other device mounted on, or coupled with, the fully-molded bridge interposer  300 . While the build-up interconnect structure  170  is shown comprising three conductive layers and three insulating layer, a person of ordinary skill in the art will appreciate that fewer layers or more layers can be used depending on the configuration and design of the fully-molded bridge interposer or semiconductor device  300 . The build-up interconnect structure  170  can optionally comprise a first insulating or passivation layer  172  formed or disposed over the carrier  140 . The first insulating layer  172  can comprise one or more layers of SiO 2 , Si 3 N 4 , SiON, Ta 2 O 5 , Al 2 O 3 , polymer, polyimide, BCB, PBO, or other material having similar insulating and structural properties. The insulating layer  172  can be formed using PVD, CVD, printing, spin coating, spray coating, sintering or thermal oxidation. Openings or first level conductive vias can be formed through the insulating layer  172  for subsequent interconnection with bumps  296 . 
     A first conductive layer  174  can be formed over the substrate  140  and over the first insulating layer  172  as a first RDL layer to extend through the openings in the first insulating layer  172 , to electrically connect with the first level conductive vias, and to electrically connect with the conductive bumps  128  and the conductive interconnects  252 . Conductive layer  174  can be one or more layers of Al, Cu, Sn, Ni, Au, Ag, or other suitable electrically conductive material formed using a patterning and metal deposition process such as sputtering, electrolytic plating, and electroless plating, or other suitable process. 
     A second insulating or passivation layer  176 , which can be similar or identical to the first insulating layer  172 , can be disposed or formed over the substrate  140 , the first conductive layer  174 , and the first insulating layer  172 . An opening or second level conductive via can be formed through the second insulating layer  176  to connect with the first conductive layer  174 . 
     A second conductive layer  178 , when desirable and when present, may be similar or identical to the first conductive layer  174 , can be formed as a second RDL layer over substrate  140 , over the first insulating layer  172 , over the first conductive layer  174 , over the second level conductive via, or within an opening of the second insulating layer  172 , to electrically connect with the first conductive layer  174 , the first level and second level conductive vias, and the semiconductor die  114 . 
     A third insulating or passivation layer  180 , when desirable and when present, may be similar or identical to the first insulating layer  172 , can be disposed or formed over the second conductive layer  178  and the second insulating layer  176 . An opening or a third level conductive via can also be formed in or through the third insulating layer  280  to connect with the second conductive layer  178 . 
     A third conductive layer  182 , when desirable and when present, may be similar or identical to the second conductive layer  178 , can be formed as a third RDL layer—or as vias or vertical interconnects through the third insulating layer  180 —and further disposed over the second insulating layer  176 , over the second conductive layer  178 , over the second level conductive via, or within an opening of the second insulating layer  176 , to electrically connect with the second conductive layer  178 , and the semiconductor die  114 . 
       FIG.  4 B  further illustrates forming a seed layer  190  over the build-up interconnect structure  170 . The seed layer  190  can be one or more layers of Al, Cu, Sn, Ni, Au, Ag, Titanium (Ti), Tungsten (W) or other suitable electrically conductive material. In some instances, the seed layer  190  will be, or may include, Ti/Cu, TiW/Cu, W/Cu or a coupling agent/Cu. The formation, placement, or deposition of the seed layer  190  can be with PVD, CVD, electrolytic plating, electroless plating, or other suitable process. The seed layer  190  can be deposited by sputtering, electroless plating, or by depositing laminated foil, such as Cu foil, combined with electroless plating. 
       FIG.  4 C  illustrates forming or depositing a resist layer or photosensitive layer  248  over and directly contacting seed layer  190 , over build-up interconnect structure  170 , and over the temporary carrier  140 . After formation of the resist layer  248  over the temporary carrier, the resist layer  248  can then be exposed and developed to form openings  250  in the resist layer  248 . In some instances, more than one photoresist layer  248  may be used. Openings  250  may be formed in the photoresist  248 , and can be positioned over, or within a footprint of, the peripheral area  143  of the carrier  140 . The openings  250  can extend completely through the resist layer  248 , such as from a first surface or bottom surface  249  of the resist layer  248  to second surface or top surface  251  of the resist layer  248  opposite the first surface  249 . An after development inspection (ADI) of the developed resist layer  248  and the openings  250  can be performed to detect the condition or quality of the openings  250 . After the ADI of resist layer  248  and openings  250 , a descum operation can be performed on the developed resist layer  248 . 
       FIG.  4 D  shows the formation of a plurality of conductive interconnects  252  that were formed within the openings  250  in resist layer  248 . The conductive interconnects  252  can be formed as columns, pillars, posts, bumps, or studs that are formed of copper or other suitable conductive material. Conductive interconnects  252  can be formed using patterning and metal deposition processes such as printing, PVD, CVD, sputtering, electrolytic plating, electroless plating, metal evaporation, metal sputtering, or other suitable metal deposition process. When conductive interconnects  252  are formed by plating, the seed layer  190  can be used as part of the plating process. Conductive interconnects of posts  252  can be one or more layers of Al, Cu, Sn, Ni, Au, Ag, Pd, solder, or other suitable electrically conductive material and can include one or more layers. 
     After formation of the conductive interconnects  252 , the resist layer  248  can be removed, such as by a stripping process, leaving conductive interconnects  252  in the peripheral area  143  around the semiconductor die mounting sites  142  to provide for subsequent vertical or three dimensional (3D) electrical interconnection for the fully-molded bridge interposer  300 . Conductive interconnects  252  can include a height H 2  in a range of 80-300 μm or a height in a range of 100-150 μm, or a height thereabout. In other instances, conductive vertical interconnects  252  may include a height in a range of 10-600 μm, 60-100 μm, 70-90 μm, or about, 80 μm. As used herein, “thereabout,” “about,” or “substantially” means a percent difference in a range of 0-5%, 1-10%, 1-20%, 1-30%, or 1-50% of the number or range indicated. 
     After removal of the resist layer  248 , the semiconductor die mounting sites  142  on or over the temporary carrier  140 , the build-up interconnect structure  170 , or both, can be exposed and ready to receive the semiconductor die  114 . The orientation of semiconductor die  114  can be either face up with active surface  120  oriented away from the temporary carrier  140  to which the semiconductor die  114  are mounted, or alternatively can be mounted face down with the active surface  120  oriented toward the temporary carrier  140  to which the semiconductor die  114  are mounted. After mounting the semiconductor die  114  to the temporary carrier  140  in a face up orientation, the DAF  130  can undergo a curing process to cure the DAF  130  and to lock the semiconductor die  114  in place to the build-up interconnect structure  70  and over the temporary carrier  140 . 
       FIG.  4 E  shows a top or plan view of a portion of the temporary carrier  140  and the conductive interconnects  252  taken along the section line  4 E from  FIG.  4 D .  FIG.  4 E  shows that the conductive interconnects  252  can be formed within, and extend intermittently across, the peripheral area  143  and surround the semiconductor die mounting sites  142  (and the semiconductor die  114 ) without being formed within the semiconductor die mounting sites  142 . Additionally,  FIG.  4 E  shows that after the semiconductor die  114  is mounted at the mounting side  142 , a first side  114   a  of semiconductor die  114  is offset by an offset O 1  from the conductive posts  252  adjacent the first side  114   a.  A second side  114   b  of semiconductor die  114  (which is opposite the first side  114   a ) is offset by an offset  02  from the conductive posts  252  adjacent the first side  114   b.    
       FIG.  4 F , continuing from  FIGS.  4 D and  4 E , illustrates that after mounting the semiconductor die  114  to the carrier  140 , a mold compound or encapsulant  256  can be deposited around the plurality of semiconductor die  114  using a paste printing, compression molding, transfer molding, liquid encapsulant molding, lamination, vacuum lamination, spin coating, or other suitable applicator. The encapsulant  256  can be a polymer composite material, such as epoxy resin with filler, epoxy acrylate with filler, PBO, polyimide, polymer with or without proper filler. Semiconductor die  114  can be embedded in encapsulant  256 , which can be non-conductive and environmentally protect the semiconductor die  114  from external elements and contaminants. The encapsulant  256  can be formed as a single encapsulant in a single step adjacent to and directly contacting all lateral sides of the semiconductor die (such as four sides), as well as be formed over the active surface  120  of the semiconductor die  114 . The same single encapsulant  256  can also be formed around and directly contact the sides of the conductive bumps  128  and the sides  252   a  of conductive interconnects  252  in a single step to form at least part of a molded bridge interposer panel or molded panel  258 . The molded bridge interposer panel or molded panel  258  may comprise one build-up interconnect structure  170 , as shown in  FIG.  4 F , or may comprise two opposing build-up interconnect structures  170 ,  270 , as illustrated in  FIG.  4 G . While a method is shown of forming build-up interconnect structure  170  first, followed by building build-up interconnect structure  270 , the order may be reversed. In some instances, the encapsulation and frontside build-up interconnect structure  270  may be built first, followed by removal of the temporary carrier  140 , and further followed by the formation of the backside build-up interconnect structure  170 . 
     The molded panel  258  can optionally undergo a curing process or post mold cure (PMC) to cure the encapsulant  256 . In some instances, a top surface, front surface, or first surface  262  of the encapsulant  256  can be substantially coplanar with first end  253  of the conductive interconnects  252 . Alternatively, the top surface  262  of the encapsulant  256  can be over, offset, or vertically separated from the first ends  253  of the conductive interconnects  252 , such that the first ends  253  of the conductive interconnects  252  are exposed with respect to the encapsulant  256  after the reconstituted wafer  258  undergoes a grinding operation, or through a recess  257  in the encapsulant  256  to expose the first end  253 . 
     The molded panel  258  can also undergo an optional grinding operation with grinder  264  to planarize the top surface, front surface, or first surface  268  of the molded panel  258  and to reduce a thickness of the molded panel  258 , and to planarize the top surface  262  of the encapsulant  256  and to planarize the top surface  268  of the molded panel  258 . The top surface  268  of the molded panel  258  can comprise the top surface  262  of the encapsulant  256 , the first ends of the conductive interconnects  252 , or both. A chemical etch can also be used to remove and planarize the encapsulant  256  and the molded panel  258 . Thus, the top surface  268  of the conductive interconnects  252  can be exposed with respect to encapsulant  256  in the peripheral area  143  to provide for electrical connection between semiconductor die  114  and a subsequently formed redistribution layer or build-up interconnect structure  170 . 
     The reconstituted wafer  258  can also undergo a panel trim or trimming to remove excess encapsulant  256  that has remained in undesirable locations as a result of a molding process, such as eliminating a flange present for a mold chase. The molded panel  258  can include a footprint or form factor of any shape and size including a circular, rectangular, or square shape, the reconstituted wafer  258  comprising a diameter, length, or width of, or about, 200 millimeter (mm), 300 mm, or any other desirable size. 
       FIG.  4 F  also shows that actual positions of the semiconductor die  114  within the molded panel  258  may be measured with an inspection device or optical inspection device  259 . As such, subsequent processing of the fully molded panel  258  as shown and described with respect to subsequent FIGs. can be performed with respect to the actual positions of the semiconductor die  114  within the molded panel  258 . 
       FIG.  4 G . shows forming a build-up interconnect structure  270 —such as a second or active side build-up interconnect structure—over the molded panel  258  to electrically connect, and provide routing between, conductive interconnects  252  and the conductive bumps  128 . While the build-up interconnect structure  270  is shown comprising three conductive layers and three insulating layer, a person of ordinary skill in the art will appreciate that fewer layers or more layers can be used depending on the configuration and design of the fully-molded bridge interposer  300 . The build-up interconnect structure  270  can optionally comprise a first insulating or passivation layer  272  formed or disposed over the molded panel  258 . The first insulating layer  272  can comprise one or more layers of SiO 2 , Si 3 N 4 , SiON, Ta 2 O 5 , Al 2 O 3 , polymer, polyimide, BCB, PBO, or other material having similar insulating and structural properties. The insulating layer  272  can be formed using PVD, CVD, printing, spin coating, spray coating, sintering or thermal oxidation. Openings or first level conductive vias can be formed through the insulating layer  272  over the conductive interconnects  252  and the conductive bumps  128  to connect with the semiconductor die  114 . 
     A first conductive layer  274  can be formed over the molded panel  258  and over the first insulating layer  272  as a first RDL layer to extend through the openings in the first insulating layer  272 , to electrically connect with the first level conductive vias, and to electrically connect with the conductive bumps  128  and the conductive interconnects  252 . As used herein, the term RDL includes distribution, redistribution, or movement, of signal through the conductive material in a vertical direction, horizontal direction, or both. As such, an RDL may, but need not have, a horizontal component. Conductive layer  274  can be one or more layers of Al, Cu, Sn, Ni, Au, Ag, or other suitable electrically conductive material formed using a patterning and metal deposition process such as sputtering, electrolytic plating, and electroless plating, or other suitable process. 
     When the first conductive layer  274  is formed, it may be formed at least partially within a corresponding first via layer formed within the first insulating layer  272  of the frontside build-up interconnect structure  270 . The first conductive layer  274  may comprises vias aligned to centers  128   c  of the copper studs  128 . The alignment with the centers  128   c  of studs or conductive bumps  128  may be measured with an r 2  (or R-squared) value for a lot (or statistically significant number) of die  114  or devices  300 . The R-squared value (also known as the coefficient of correlation) is a statistical measure of how closely data is fitted to a regression line, which in this case is based on the lot of die  114  or devices  300 . Stated another way, an R-squared value is the proportion of the variation in the dependent variable that is predictable from the independent variable. The alignment with the centers  128   c  of studs or conductive bumps  128  may have an r 2  value greater than or equal to 0.5, 0.6, 0.7, 0.8, or in a range greater than or equal to 0.5-0.8 relative to a difference between an offset O 1  between a first side  114   a  of the bridge die  114  and a copper post  252   a  adjacent the first side  114   a  of the bridge die  114  and a second offset  02  between a second side  114   b  of the bridge die  114  opposite the first side  114   a  of the bridge die  114  and a corresponding copper post  252   b  adjacent the second side  114   b  of the bridge die  114 . As such, the r 2  value of greater than about 0.5 (or 50%), 0.6 (or 60%), 0.7 (or 70%), 0.8 (or (0%), or more between the centers  128   c  and the centers of the vias  274   v  of the conductive layer  274  when compared with the difference in the offsets between O 1  and O 2  provides a structural way of identifying that the processing of the build-up interconnect structure  270  was performed with respect to the actual positions of the semiconductor die  114  within the molded panel  258 , thereby allowing for finer pitch connections with the high density and ultra-high density interconnection with the bridge die  114  and the build-up interconnect structure  270 . Stated another way, the differences, offsets, or misalignments between the centers  128   c  and the centers of the vias  274   v  of the conductive layer  274  is less than (or more closely aligned), than the differences, offsets, or misalignments between the differences in offsets O 1  and O 2  between the copper posts  252  of the bridge die  114  for the lot of die  114  or devices  300 . Stated yet another way, for a lot of die  114  or devices  300 , the differences, offsets, or misalignments between the centers  128   c  and the centers of the vias  274   v  is not statistically correlated (or has an r 2  value less than 0.5) to the alignment of the die to the copper posts  252  on each side of the die  114  (measured by looking at the offsets O 1  and O 2 ). 
     A second insulating or passivation layer  276 , which can be similar or identical to the first insulating layer  272 , can be disposed or formed over the molded panel  258 , the first conductive layer  274 , and the first insulating layer  272 . An opening or second level conductive via can be formed through the second insulating layer  276  to connect with the first conductive layer  274 . 
     A second conductive layer  278 , when desirable and when present, may be similar or identical to the first conductive layer  274 , can be formed as a second RDL layer over molded panel  258 , over the first insulating layer  272 , over the first conductive layer  274 , over the second level conductive via, or within an opening of the second insulating layer  272 , to electrically connect with the first conductive layer  274 , the first level and second level conductive vias, and the semiconductor die  114 . 
     A third insulating or passivation layer  280 , when desirable and when present, may be similar or identical to the first insulating layer  272 , can be disposed or formed over the second conductive layer  278  and the second insulating layer  276 . An opening or a third level conductive via can also be formed in or through the third insulating layer  280  to connect with the second conductive layer  278 . 
     A third conductive layer  282 , when desirable and when present, may be similar or identical to the second conductive layer  278 , can be formed as a third RDL layer—or as vias or vertical interconnects through the third insulating layer  280 —and be further disposed over the second insulating layer  276 , over the second conductive layer  278 , over the second level conductive via, or within an opening of the second insulating layer  276 . The third conductive layer  282  can electrically connect with the second conductive layer  278 , and be coupled with the conductive interconnects  252  and the semiconductor die  114 . 
     In some instances, the third (or final) conductive layer within the build-up interconnect structure  270  cam be formed as UBMs  282  that are formed over the third insulating layer  80  to electrically connect with the other conductive layers and conductive vias within the build-up interconnect structure  270 , as well as electrically connect to the semiconductor die  114 , the conductive bumps  128 , and the conductive interconnects  252 . UBMs  282 , like all of the layers, plating layers, or conductive layers formed by a plating process as presented herein, can be a multiple metal stack comprising one or more of an adhesion layer, barrier layer, seed layer, or wetting layer. The adhesion layer can comprise titanium (Ti), or titanium nitride (TiN), titanium tungsten (TiW), Al, or chromium (Cr). The barrier layer can be formed over the adhesion layer and can be made of Ni, NiV, platinum (Pt), palladium (Pd), TiW, or chromium copper (CrCu). In some instances, the barrier layer can be a sputtered layer of TiW or Ti and can serve as both the adhesion layer and the barrier layer. In either event, the barrier layer can inhibit unwanted diffusion of material, like Cu. The seed layer can be Cu, Ni, NiV, Au, Al, or other suitable material. For example, the seed layer can be a sputtered layer of Cu comprising a thickness of about  2000  angstroms (e.g.,  2000  plus or minus  0 - 600  angstroms). The seed layer can be formed over the barrier layer and can act as an intermediate conductive layer below subsequently formed upper bumps, balls, or interconnect structures  290 . In some instances, the wetting layer can comprise a layer of Cu with a thickness in a range of about 5-11 μm or 7-9 μm. Upper bumps  290 , such as when formed of SnAg solder, can consume some of the Cu UBM during reflow and forms an intermetallic compound at the interface between the solder bump  290  and the Cu of the wetting layer. However, the Cu of the wetting layer can be made thick enough to prevent full consumption of the Cu pad by the solder during high temperature aging. 
     UBMs  282  may be formed as a PoP UBM pad, UBM structure, or land pad, such as for stacked PoP structure, an additional electronic component. In some instances, the UBMs  282  can comprise Ni, Pd and Au. UBMs  282  can provide a low resistive interconnect to build-up interconnect structure  270  as well as a barrier to solder diffusion and seed layer for solder wettability. 
     The upper bumps  290  can be formed on or coupled to the UBMs  282 . The bumps  290  can be formed by depositing an electrically conductive bump material over the UBMs  282  using an evaporation, electrolytic plating, electroless plating, ball drop, or screen-printing process. The bump material can be Al, Sn, Ni, Au, Ag, Pb, bismuth (Bi), Cu, solder, and combinations thereof, with an optional flux solution. For example, the bump material can be eutectic Sn/Pb, high-lead solder, or lead-free solder. The bump material can be bonded to the UBMs  282  using a suitable attachment or bonding process. In one embodiment, the bump material is reflowed by heating the material above its melting point to form spherical balls or bumps  290 . In some applications, bumps  290  are reflowed a second time to improve electrical contact to UBMs  282 . The bumps  290  can also be compression bonded or thermocompression bonded to the UBMs  282 . Bumps  290  represent one type of interconnect structure that can be formed over the conductive interconnects  252 , and other desirable structures, such as conductive paste, stud bump, micro bump, or other electrical interconnects may also be used as desired. 
       FIG.  4 H  illustrates singulation of the molded panel  258  and build-up interconnect structures  170 ,  270  with saw blade or laser cutting tool  294  to form individual fully-molded bridge interposers  300 . The final interposer structure  300  may be thinner than previous packages, comprising an overall height or thickness of, or on the order of, or about, 50-250, 100-200, or less than or about 150 μm. Stacks of multiple layers can be correspondingly thicker, and increase in multiples of the above ranges, resulting in an overall thickness in a range of 200-1000 μm. As part of the reduced height of the structure, the final structure may be made without an interposer, comprising the build-up interconnect layers and conductive vertical providing the function of an interposer, and serving as s sort of embedded interposer. 
       FIG.  4 H  illustrates removing the temporary carrier  140 , to expose the second ends  254  of the conductive interconnects  252 . The carrier  140  can be removed, e.g., by grinding the carrier  140 , by exposing UV release tape  144  to UV radiation separate the UV tape  144  from the glass substrate  140 , by thermal release, or other suitable method. After removal of the carrier  140 , the molded panel  258  can also undergo an etching process, such as a wet etch, to clean the surface of the molded panel  258  exposed by removal of the temporary carrier  140 , including the exposed second ends  254  of the conductive interconnects  252 . The exposed second ends  254  of the conductive interconnects  252  can also undergo a coating or pad finishing process, such as by an Organic Solderability Preservative (OSP) coating, solder printing, electroless plating, or other suitable process, to form a PoP UBM pad, UBM structures, land pads, or other suitable structure, as desired. 
     Lower bumps, balls, or interconnect structures  296 , can be formed on or coupled to the exposed second ends  254  of the conductive interconnects  252 , as shown, for example, in  FIG.  5 C . The bumps  296  can be formed by depositing an electrically conductive bump material over the exposed second ends  254  of the conductive interconnects  252  using an evaporation, electrolytic plating, electroless plating, ball drop, or screen-printing process. The bump material can be Al, Sn, Ni, Au, Ag, Pb, Bi, Cu, solder, and combinations thereof, with an optional flux solution. For example, the bump material can be eutectic Sn/Pb, high-lead solder, or lead-free solder. The bump material can be bonded to the exposed second ends  254  of the conductive interconnects  252  using a suitable attachment or bonding process. In one embodiment, the bump material is reflowed by heating the material above its melting point to form spherical balls or bumps  296 . In some applications, bumps  296  are reflowed a second time to improve electrical contact to conductive interconnects  252 . The bumps  296  can also be compression bonded or thermocompression bonded to the conductive interconnects  252 . Bumps  296  represent one type of interconnect structure that can be formed over the conductive interconnects  252 , and other desirable structures, such as conductive paste, stud bump, micro bump, or other electrical interconnects may also be used as desired. 
       FIG.  5 A  illustrates a high-level perspective view of a fully molded bridge interposer  300  disposed (or sandwiched) between: (i) a chiplet arrangement  310  of semiconductor devices (e.g., a System On Chip (SOC)  312  and High Bandwidth Memory (HBM) devices  314 ), and (ii) a substrate or package substrate  320 , similar to what was shown in  FIGS.  2 A- 2 C . In the past, a chiplet  60  or arrangement of semiconductor devices  62 ,  64  similar to what was shown in  FIG.  2 A  may have been coupled together with silicon interposers comprising TSVS, or EMIBs, as shown and described above with respect to  FIGS.  1 A- 1 F . However,  FIGS.  5 A- 5 C  show the new technology of a fully molded bridge interposer  300  to replace the existing technology of a silicon interposer or EMIB. 
       FIG.  5 B  shows a cross-sectional profile view taken along the section-line or box labeled “ 5 B” in  FIG.  2 B .  FIG.  5 B  shows a cross-sectional profile view of the fully-molded bridge interposer  300 , similar to the view shown in  FIG.  4 H . Moreover, the view of  FIG.  5 B  further includes the features of the fully-molded bridge interposer  300  shown more closely to scale.  FIG.  5 B  shows the peripheral conductive interconnect structures  252  disposed around, and laterally offset from, the semiconductor die  114  and within the encapsulant material  256 . The peripheral conductive interconnect structures  252  can extend completely through the encapsulant  256  in a vertical direction from, or adjacent, the top surface  262  of the encapsulant  256  to, or adjacent, the bottom surface  266  of the encapsulant  256  opposite top surface  262  to provide vertical electrical interconnection through the fully-molded bridge interposer  300 , which can facilitate stacking of packages in PoP arrangements.  FIG.  5 B  further shows a fully molded bridge interposer  300  disposed between a chiplet arrangement  310  of at least two semiconductor devices (such as a SOC  312  and a HBM  314 ) and a package substrate  320 . 
       FIG.  5 C  shows a close-up sectional profile view of a portion of the fully molded bridge interposer  300  of  FIG.  5 B  shown within the section-line or box designated  5 C.  FIG.  5 C  shows the semiconductor die  114 , conductive or copper bumps or interconnects  128 , and conductive or copper posts  252 , included within the encapsulant  256 . Electrical build-up interconnect structures  170 ,  270  comprising RDLs are formed above and below opposing surfaces  262 ,  266  of the encapsulant  256  as well as above and below the semiconductor die  114  and conductive or copper studs  128 , and conductive or copper posts  252 . The semiconductor die  114 , conductive or copper studs  128 , and conductive or copper posts  252 , are electrically coupled to, or interconnected with, the chiplet arrangement  310 , which may include a SOC  312 , HBMs  314 , and any other number of desired semiconductor devices within the chiplet  310  or SOC  312 . 
     Attachment options for the molded bridge interposer  300 , to chiplet arrangement  310  include upper bumps, balls, or interconnect structures  290 . Attachment options for the molded bridge interposer  300  to the substrate  320  include lower bumps, balls, or interconnect structures  296 . Bumps  290  and  296  may each include: 1) solder bumps, 2) plated copper plus a solder post, and 3) direct copper to copper bonding. Additional design options for the fully molded bridge interposer  300  include: 1) underfill, and 2) over mold, as desired or as applicable. 
       FIG.  5 C  also shows exemplary layers labeled with dimensions that are about, or approximately, the dimensions indicated. The semiconductor die  114  may comprise a height or thickness (with or without to die attach material  115 ) of about 100 μm and the conductive posts  252  may comprise a height of about 125 μm. As used herein “about” and “approximately” mean within a percent difference of less than or equal to 50%, 40%, 30%, 20%, 10%, 5%, 3%, 2%, or 1%. 
     The fully-molded bridge interposers  300  provide cost advantages for high density integration, which includes integrations comprising 2 μm line and space pitch, and 20 μm area array bond pad pitch. Advantages include: (i) cost reduction greater than or equal to 80% for extending die size with respect to growing monolithic silicon (e.g., $0.01 per mm 2  versus $0.06 per mm 2 ), and (ii) cost reduction greater than or equal to 50% compared to laminate embedded bridges (e.g., $0.01 per mm 2  vs. $0.03 per mm 2 . For ultra-high density integration with the fully molded bridge interposer  300 , an enabled 20 μm area array bond pad pitch allows for increased or improved input/output (IO) on advanced node silicon without a die size penalty so that the integrated circuit (IC) device IO count is no longer constrained by a number of bond pads which will fit in minimum possible device size. As such, as much as an 80% reduction in die size is possible when total size has been based bond pad area requirements when using existing technology. 
     While this disclosure includes a number of embodiments in different forms, the drawings and written descriptions present detail of particular embodiments with the understanding that the present disclosure is to be considered as an exemplification of the principles of the disclosed methods and systems, and is not intended to limit the broad aspect of the disclosed concepts to the embodiments illustrated. Additionally, it should be understood by those of ordinary skill in the art that other manufacturing devices and examples could be intermixed or substituted with those provided. In places where the description above refers to particular embodiments, it should be readily apparent that a number of modifications may be made without departing from the spirit thereof and that these embodiments and implementations may be applied to other technologies as well. Accordingly, the disclosed subject matter is intended to embrace all such alterations, modifications and variations that fall within the spirit and scope of the disclosure and the knowledge of one of ordinary skill in the art.