MULTI-SIDE POWER DELIVERY IN STACKED MEMORY PACKAGING

A packaged IC includes a fanout layer, a processor having a first surface residing substantially adjacent a first surface of the fanout layer, a Redistribution Layer (RDL) having a first surface coupled to a second surface of the processor, and a memory coupled to a second surface of the RDL, wherein a first portion of the memory is disposed outside of a footprint of the processor and a second portion of the memory is disposed within the footprint of the processor. The packaged IC further includes first conductive posts disposed beneath the first portion of the memory proximate a first side of the processor for providing communication links between the processor and memory, and second conductive posts coupled between the fanout layer and conductive features of the RDL coupled to power inputs of the second portion of the memory, the second conductive posts proximate a second side of the processor.

TECHNICAL FIELD

The present application relates to Integrated Circuit (IC) technology; and more particularly to the packaging of processors with memory.

BACKGROUND

Integrated Circuit (IC) technology has advanced greatly over the past fifty years. ICs are now pervasive and present in electronic devices, machinery, vehicles, appliances, and many other devices. The density of transistors in modern ICs can reach 100 million transistors per square millimeter, and some large processing ICs now include billions of transistors while memory ICs may include hundreds of billions of transistors. However, the processing capability of a single IC may not be sufficient to meet the requisite processing needs of certain systems. Thus, multiple IC dies or devices are sometimes closely coupled and packaged together to provide greater processing capabilities.

Such multiple IC packages are used in a great number of differing applications including, without limitation, mobile communication devices, artificial intelligence devices, and graphics processing units. Typically, an Application Processor (AP) used in such devices includes a specialized processing structure to service the particular application, e.g., communications processor, graphics processor, etc. The AP typically has significant memory requirements, including large memory bandwidth as well as rapid memory access. Thus, multiple IC packages now often include both an AP and high bandwidth memory.

Current POP (Package on Package) packages use memory that provides up to 51.2 GBps peak bandwidth for LPDDR (Low Power Double Data Rate, e.g., 5thGeneration) installations. To increase IO speed beyond 51.2 GBps would be very difficult for LPDDR due to limited pin availability. Further, increasing memory access speeds increases power consumption and internal heat production, and may compromise signal integrity. Certain prior art alternatives involve stacking WIO (Wide Input/Output) memory on a back-side of a processor, which requires through silicon vias (TSVs). Another prior art solution involves use of an interposer or lateral FO (Fan Out) connection, which increases package size. Still other prior art alternatives require vias that extended through the AP. Other prior alternatives have additional potential shortcomings, such as strict alignment requirements and poor signal pathways.

SUMMARY

The present disclosure provides various aspects that may be employed with one or more of the embodiments. These aspects may be combined with one another singularly, in various combinations, or in total. According to a first embodiment of the present disclosure, a packaged Integrated Circuit (IC) is provided, the packaged IC including a fanout layer having conductive lines and conductive vias. The packaged IC further includes a processor having a first surface residing substantially adjacent a first surface of the fanout layer, a Redistribution Layer (RDL) having a first surface coupled to a second surface of the processor, and a memory coupled to a second surface of the RDL, wherein a first portion of the memory is disposed outside of a footprint of the processor and a second portion of the memory is disposed within the footprint of the processor.

In this embodiment, an encapsulant surrounds a portion of the memory, the RDL, and the processor, the encapsulant contacting the fanout layer on a first side and having an exposed second side. The packaged IC additionally includes a first plurality of conductive posts coupled between the fanout layer and the RDL through a portion of the encapsulant disposed beneath the first portion of the memory adjacent a first side of the processor, the first plurality of conductive posts providing data communication links between the processor and the memory via the fanout layer and the RDL. A second plurality of conductive posts are coupled between the fanout layer and conductive features of the RDL through a portion of the encapsulant that is proximate a second side of the processor, the conductive features of the RDL coupled to power inputs of the second portion of the memory. This embodiment further includes a plurality of Through Mold Vias (TMVs) extending between the fanout layer and the exposed second side of the encapsulant.

According to a first aspect of the first embodiment, the packaged IC further comprises a third plurality of conductive posts coupled between the fanout layer and the RDL through a portion of the encapsulant that is proximate the first side of the processor. The third plurality of conductive posts is coupled, via the RDL, to power inputs of the first portion of the memory. According to a second aspect of the packaged IC of the first embodiment, the second plurality of conductive posts are further coupled between the fanout layer and conductive features of the RDL through a portion of the encapsulant that is proximate at least a third side of the processor.

According to a third aspect of the first embodiment, the processor is one or more of a graphics processing unit, a communications processor, or an application specific processor. According to a fourth aspect of the packaged IC of the first embodiment, the packaged IC further comprises a dummy silicon substrate disposed adjacent the memory. According to a fifth aspect of the first embodiment, the packaged IC further includes a ball grid array coupled to the plurality of TMVs, and a Package on Package (POP) memory coupled to the ball grid array. According to a sixth aspect of the first embodiment, the memory is a high bandwidth memory relative to the POP memory. According to a seventh aspect of the first embodiment, the packaged IC further comprises a PCB ball grid array coupled to a second surface of the fanout layer.

In a second embodiment of the present disclosure, a method is provided for constructing a packaged Integrated Circuit (IC). According to the method, first level conductive posts are formed on a carrier substrate. The method of this embodiment further includes attaching a first side of a memory to the carrier substrate, the memory having a second side with conductive contacts for power inputs and data connections of the memory, and encapsulating the first level conductive posts and the memory with first encapsulant that contacts the carrier substrate on a first side and has an exposed second side.

In accordance with the method, a Redistribution Layer (RDL) is placed on the exposed second side of the first encapsulant, such that a first side of the RDL is disposed adjacent to and extends beyond the second side of the memory. The method further includes forming second level conductive posts on a second side of the RDL, and placing a processor on the second side of the RDL such that a first portion of the memory is disposed outside of a footprint of the processor and a second portion of the memory is disposed within the footprint of the processor. According to the method, the second level conductive posts and the processor are encapsulated with second encapsulant that contacts the second side of the RDL and has an exposed second side.

In this second embodiment, the method further includes forming a fanout layer on the exposed second side of the second encapsulant such that a first plurality of the second level conductive posts provide data communication links, via the RDL, between the processor and the conductive contacts for the data connections of the memory, a second plurality of the second level conductive posts are coupled, via the RDL, to the conductive contacts for the power inputs of the memory, and the first level conductive posts and a third plurality of the second level conductive posts form Through Mold Vias (TMVs) extending between the carrier substrate and the fanout layer.

The second embodiment also includes a plurality of aspects that may apply singularly or in combination. According to a first aspect of the method of the second embodiment, the data connections of the memory are disposed on the first portion of the memory and the power inputs are disposed on the second portion of the memory. According to a second aspect of the second embodiment, the second plurality of the second level conductive posts are disposed outside a footprint of the memory.

According to a third aspect of the second embodiment, the method further includes removing the carrier substrate to expose the first level conductive posts, forming a ball grid array on the exposed first level conductive posts, and placing Package on Package (POP) memory on the ball grid array. According to a fourth aspect of the second embodiment, the method further comprises forming a PCB ball grid array on an exposed surface of the fanout layer. According to a fifth aspect of the GPU of the second embodiment, the method further includes placing a dummy silicon substrate beside the memory, wherein the first encapsulant surrounds at least a portion of the dummy silicon substrate.

According to a third embodiment of the present disclosure, a packaged Integrated Circuit (IC) is provided, the packaged IC including a fanout layer having conductive lines and conductive vias. The packaged IC further includes a processor having a first surface residing substantially adjacent a first surface of the fanout layer, a plurality of conductive posts extending from the fanout layer, and a first encapsulant surrounding at least a portion of the processor and the plurality of conductive posts, the first encapsulant contacting the fanout layer on a first side and having an exposed second side. In this third embodiment, the packaged IC also includes a Redistribution Layer (RDL) having a first surface coupled to a second surface of the processor and the exposed second side of the first encapsulant, and a memory coupled to a second surface of the RDL, wherein a first portion of the memory is disposed outside of a footprint of the processor and a second portion of the memory is disposed within the footprint of the processor.

According to this third embodiment, a first plurality of conductive posts are coupled between the fanout layer and the RDL through a portion of the first encapsulant disposed beneath the first portion of the memory adjacent a first side of the processor, the first plurality of conductive posts providing data communication links between the processor and the memory. Additionally, a second plurality of conductive posts are coupled between the fanout layer and conductive features of the RDL through a portion of the first encapsulant that is proximate a second side of the processor, the conductive features of the RDL coupled to power inputs of the second portion of the memory. In this third embodiment, the packaged IC further includes a first plurality of Through Mold Vias (TMVs) extending from the fanout layer through the first encapsulant, a second encapsulant surrounding at least a portion of the memory and the RDL, and a second plurality of TMVs extending from the first plurality of TMVs through the second encapsulant.

The third embodiment also includes a plurality of aspects that may apply singularly or in combination. According to a first aspect of the third embodiment, the packaged IC further comprises a third plurality of conductive posts coupled between the fanout layer and the RDL through a portion of the first encapsulant that is proximate the first side of the processor, the third plurality of conductive posts coupled, via the RDL, to power inputs of the first portion of the memory. According to a second aspect of the third embodiment, the second plurality of conductive posts are further coupled between the fanout layer and conductive features of the RDL through a portion of the first encapsulant that is proximate at least a third side of the processor.

According to a third aspect of the third embodiment, the packaged IC further comprises a dummy silicon substrate disposed adjacent the memory. According to a fourth aspect of the third embodiment, the packaged IC further comprises a ball grid array coupled to the second plurality of TMVs, and a Package on Package (POP) memory coupled to the ball grid array. According to a fifth aspect of the third embodiment, the packaged IC further includes a PCB ball grid array coupled to a second surface of the fanout layer. The third embodiment can further include additional aspects such as those described above in conjunction with the first embodiment.

The disclosed embodiments introduce multi-side power delivery to a memory device in a packaged IC including a processor. Power delivery to the memory is provided, in part, by a fanout layer and conductive features of an RDL. As compared to prior architectures, the disclosed embodiments offer power delivery with reduced IR drop across the memory, and do not require use of relatively expensive through silicon vias (TSVs) or the larger package sizes associated with side-by-side placement of a processor and memory. These and other features will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings and claims.

DETAILED DESCRIPTION

It should be understood at the outset that, although illustrative implementations of one or more embodiments are provided below, the disclosed devices and/or methods may be implemented using any number of techniques and materials, whether currently known or in existence. The disclosure should in no way be limited to the illustrative implementations, drawings, and techniques illustrated below, including the exemplary designs and implementations illustrated and described herein, but may be modified within the scope of the appended claims along with their full scope of equivalents. Throughout the various views and illustrative embodiments described below, like reference numerals are used to designate like elements in some embodiments.

Novel methodologies and architectures are introduced below for improving power distribution and utilization in a packaged Integrated Circuit (IC) without utilizing through silicon vias (TSVs). As described in greater detail below, a packaged IC in accordance with the present disclosure a fanout layer and conductive features of an RDL to provide power deliver to multiple sides of a memory (e.g., a high bandwidth memory) that supports a processor. In an example, a first portion of the memory is disposed outside of a footprint of the processor. Data communications links are formed between the processor and the first portion of the memory, the links including conductive posts (e.g., Through Mold Vias (TMVs)) disposed beneath the first portion of the memory proximate to a first side of the processor. Multi-side power delivery to the memory is provided by the RDL and additional conductive post disposed proximate at least a second side of the processor. In this manner, power delivery to the memory is relatively symmetric, thereby minimizing undesirable IR drops across the memory.

Referring now toFIG. 1, a sectional side view illustrating a packaged Integrated Circuit (IC)100constructed in accordance with an embodiment of the present disclosure is shown. The described packaged IC100provides a memory104(e.g., a high bandwidth, high density memory device) for use by a processor102. The packaged IC100further includes a fanout layer110having power conductors and vias108and signal conductors and vias112/114. The fanout layer can be formed in a semiconductor manufacturing process. The processor102has a first surface residing substantially adjacent a first surface of the fanout layer110. The processor102may be an Application Processor (AP), a graphics processing unit (GPU), a communications processor, a general-purpose processor, an application specific processor, or another type of processor or processing unit. The processor102can mount directly to the fanout layer110or, alternatively, mount upon an intermediary layer.

In this example, a Redistribution Layer (RDL)108bhas a first surface that is partially disposed over or coupled to a second surface of the processor102. The RDL108bcan also be formed in a semiconductor manufacturing process and provides power conductors formed therein that couple to the power conductors and vias108of the fanout layer110through conductive posts108a. As described more fully below, the RDL108bfurther services data communication links between the processor102and the memory104through conductive posts112a. All of these power and/or signal conductors may be formed of copper with dimensions greater than one micrometer, for example.

In the illustrated packaged IC100ofFIG. 1, the memory104couples to a second surface of the RDL108b. As also shown inFIG. 3(element302), a first portion of the memory104is disposed outside a footprint of the processor102while a second portion of the memory104is disposed within (i.e., overlaps) the footprint of the processor102. The memory104of the embodiment ofFIG. 1may be any type of memory that supports the high bandwidth storage requirements of the processor102. For example, the memory104may be a LPDDR SDRAM, RAM, ROM, static RAM, optical memory, or another memory type.

In the embodiment ofFIG. 1, power delivery to the memory104is provide by power conductors disposes on two or more sides of the processor102. For example, power can be provided to one or more power inputs128of the first portion of the memory104(disposed outside of the footprint of the processor102) through the RDL108band one or more conductive posts108adisposed proximate a first side of the processor102. Additionally, power can be provided to one or more power inputs128of the second portion of the memory through the RDL108band one or more additional conductive posts108adisposed proximate a second side of the processor102. In this example, the first portion of the memory104includes a plurality of data connections126(e.g., I/O pads) to support data communication links with the processor102. Such data communication links are formed by coupling the data connections126to signal conductors and vias112(which in turn are coupled to the processor102) through conductive posts112a. As used herein, the terms “proximate” and “proximate to” refer to a very near, close or adjacent spatial relationship. A proximate spatial relationship between elements such as conductive posts and a processor may be desirable, for example, to minimize the size of a packaged IC.

Optionally, the memory104can be further configured to communicate wirelessly with the processor102, e.g., via inductive coupling, capacitive coupling or Radio Frequency (RF) coupling. The memory104may include antennas, contacts, and/or coils to assist with the wireless communications. The processor102may also include antennas, contacts, and/or coils to support wireless communications with the memory104. In an alternate construct, the antennas, contacts, and/or coils may be formed external to the memory104and/or the processor102and electrically couple thereto.

In the illustrated embodiment, an encapsulant116surrounds a substantial portion of the memory104, the RDL108b, and the processor102. As used herein, the term “substantial portion” refers to most or all of the otherwise exposed outer surface of an encapsulated element. For example, an encapsulant can surround at least one of a top or bottom surface of a semiconductor element of a packaged IC, as well as all or most of the side surfaces of the semiconductor element. In the embodiment ofFIG. 1, the encapsulant116contacts the fanout layer110on a first side and has an exposed second side. An optional backside RDL or molding (not separately illustrated) may be mounted or formed on an upper surface of the memory104or encapsulant116. The plurality of conductive posts108aand112aextend from the fanout layer110to the RDL108bthrough a portion of the encapsulant116. A plurality of Through Mold Vias (TMVs)120extend between the fanout layer110and the exposed second side of the encapsulant116. The TMVs120support communications and power delivery between the fanout layer110and a Package on Package (POP) memory106that provide additional storage resources to the processor102. A ball grid array124couples to the plurality of TMVs120and provides connections between the fanout layer110and the POP memory106. The packaged IC100of the illustrated embodiment also includes a Printed Circuit Board (PCB) ball grid array122coupled to the fanout layer110that supports mounting of the packaged IC100to a PCB. In an example, the encapsulant116can comprise an encapsulant portion118that is formed in a second-stage molding process. When a second-stage molding process is used, the encapsulant portion118may be formed of the same or differing molding/insulation material as the encapsulant116.

FIG. 2is a sectional side view illustrating a packaged IC150constructed in accordance with another embodiment of the present disclosure. The packaged IC150ofFIG. 2is substantially similar to the packaged IC100ofFIG. 1with the addition of a dummy silicon substrate130residing beside the memory104within the encapsulant116. The dummy silicon substrate130of the illustrated embodiment has thermal expansion properties similar to those of the memory104and the processor102, and functions to reduce temperature-related stress on the packaged IC150. The size of the dummy silicon substrate130can vary depending on the relative sizes and locations of the processor102and memory104in a given implementation.

FIG. 3is a diagrammatic top view of a portion of a packaged IC300, such as the packaged IC100of the embodiment ofFIG. 1. In the illustrated embodiment, the packaged IC300includes the processor102and the memory104. The ball grid array122, the POP memory106, the data connections126, the power inputs128, and the dummy silicon substrate130(if utilized) are omitted for sake of clarity.

As illustrated inFIG. 3, a portion302of the memory104resides outside a footprint of the processor102(i.e., the memory104overlaps the processor102). In this example, the data connections of the memory are disposed on the first portion of the memory104and the power inputs are disposed on each of the first and second portions of the memory104. As previously described, data communication links between the processor102and the memory104are provided through conductive posts112adisposed beneath the portion302of the memory. Multiple conductors of the RDL108bare shown, portions of which are disposed between the processor102and memory104in order to electrically couple with respective power inputs128of the memory104. Conductive posts108aare shown disposed on each side of the processor102for providing power to the memory104through the RDL108b. In other embodiments, conductive posts108acan be disposed on two or three sides of processor102.

FIG. 4is a sectional side view illustrating a packaged IC400constructed in accordance with another embodiment of the present disclosure. The packaged IC400includes certain elements that are the same or similar to those described previously with reference toFIGS. 1-3, which retain common numbering and may be constructed in a similar fashion as described therewith. The packaged IC400ofFIG. 4is similar to the packaged IC100ofFIG. 1, for example, except that distinct encapsulation layers and additional conductive posts are provided. An example of a fabrication flow for the packaged IC400is described in conjunction withFIGS. 5A-5J.

In the illustrated embodiment, the packaged IC400includes a fanout layer110having power conductors and vias108and signal conductors and vias112/114, a processor102having a first surface residing substantially adjacent a first surface of the fanout layer110, and a plurality of conductive posts204and208and TMVs or conductive posts216extending from the fanout layer110. The packaged IC100further includes a first encapsulant200that surrounds a substantial portion of the processor102and the plurality of conductive posts204,208and216, the first encapsulant200contacting the fanout layer110on a first side and having an exposed second side.

In this example, the packaged IC400also includes RDL222having a first surface coupled to a second surface of the processor102and the exposed second side of the first encapsulant200. A memory104couples to a second surface of the RDL222and is configured to communicate with the processor102through communication links formed by I/O contacts (e.g., short conductive posts212) of the processor102, the fanout layer110, the plurality of conductive posts204, the RDL222, and data connections/conductive contacts210of the memory104. Likewise, a plurality of conductive posts208disposed proximate at least one side of the memory104are coupled to the fanout layer110and conductive features of the of the RDL222which are coupled to power inputs/conductive contacts206of the memory104. In an example, the power inputs206are arranged in a manner that allows relatively symmetric power delivery to the memory104.

As shown inFIG. 4, a first portion of the memory104is disposed outside a footprint of the processor102. In this embodiment, the plurality of conductive posts204are disposed beneath the first portion of the memory104proximate a side of the processor102. In addition, power may be provided to power input(s)220of the first portion of the memory104through one or more conductive posts208disposed beneath the first portion of the memory104.

In the illustrated embodiment, a second encapsulant202surrounds a portion of the memory104and the RDL222, and a second plurality of TMVs or conductive posts218extends from the first plurality of TMVs or conductive posts216through the second encapsulant202(for providing connections between the fanout layer110and a POP memory106). In an example, connections between the POP memory106and the processor102are provided by conductive features224of the fanout layer110(explicit connections between the conductive features224and the processor102have been omitted inFIG. 4for sake of clarity). The packaged IC400may further include a dummy silicon substrate130residing adjacent the memory104and at least partially within the second encapsulant202. The packaged IC400may also include ball grid arrays122and124and the POP memory106.

FIGS. 5A-5Jare sectional side views illustrating an example of a fabrication flow for a packaged IC constructed in accordance with the embodiment ofFIG. 4. Referring toFIG. 5A, the illustrated fabrication flow includes forming first level conductive posts218on a carrier substrate500. The carrier substrate500can be formed of silicon, glass, or other suitable material. As shown inFIG. 5B, a first side of a memory104(e.g., a high bandwidth memory die) is attached (e.g., via a pick-and-place process and an adhesive, such as a die attach film (DAF), polymer material, or other type of adhesive or glue) to the carrier substrate500. In this example, a second side of the memory104is provided with conductive contacts, such as short copper posts, for power inputs (represented as elements206and220) and data connections (represented as element210). In an alternate embodiment, the second side of the memory further includes coupling coils or other structures to support wireless communications with a processor. In the embodiment ofFIG. 5B, an optional dummy silicon substrate130is also attached to the carrier substrate500adjacent the memory104.

The fabrication flow proceeds as shown inFIG. 5C, and a second encapsulant202is disposed or molded around and substantially encapsulates the first level conductive posts218, the memory104and the dummy silicon substrate130. In this example, the second encapsulant202contacts the carrier substrate500on a first side. The second encapsulant202is polished or otherwise formed to have an exposed second side202athat also exposes the first level conductive posts218and the conductive contacts206,210and220.

In the fabrication step illustrated byFIG. 5D, a Redistribution Layer (RDL)222is placed or formed on the exposed second side of the second encapsulant202. A first side of the RDL222is disposed proximate to the second side of the memory104, and the RDL222includes conductive features214extending beyond and coupled to power inputs of the memory104. With reference toFIG. 5E, second level conductive posts204,208and216(e.g., copper posts) are formed on a second side of the RDL222. In another example, vias for some or all of the second level conductive posts204,208and216are formed prior to construction of the RDL222.

The fabrication flow continues as shown inFIG. 5F, where a processor102(e.g., a processor die or processing unit) is placed on the second side of the RDL such that a first portion of the memory is disposed outside a footprint of the processor and a second portion of the memory is disposed within the footprint of the processor. The processor102of the illustrated embodiment includes (short) conductive posts212for providing data connections.

The fabrication flow proceeds as shown inFIG. 5G, and a second encapsulant202is disposed or molded around and substantially encapsulates the second level conductive posts204,208and216and the processor102. In this example, a first side of the first encapsulant200contacts the second side of the RDL222. The first encapsulant200is polished or otherwise formed to have an exposed second side200athat also exposes the second level conductive posts204,208and216and the conductive posts212.

Referring toFIG. 5H, a fanout layer110is formed on the exposed second side of the first encapsulant200, such that a first plurality (204) of the second level conductive posts provide data communication links, via the RDL222, between the processor102and the memory104, a second plurality (208) of the second level conductive posts are coupled, via the RDL222, to power inputs of the memory104, and the first level conductive posts218and a third plurality (216) of the second level conductive posts form Through Mold Vias (TMVs) extending between the carrier substrate500and the fanout layer110. As shown inFIG. 5I, a ball grid array122is next formed on an exposed surface of the fanout layer110to provide electrical connections to the signal conductors and vias of the fanout layer110. In the example ofFIG. 5J, the carrier substrate500is removed to expose the first level conductive posts218. In another example, a ball grid array or other coupling structure (not separately illustrated) can be formed on the exposed first level conductive posts for coupling a Package on Package (POP) memory (not separately illustrated) to the packaged IC. When multiple packaged ICs are manufactured as set forth above on a common substrate/carrier, the fabrication flow may further entail singulation of the packaged ICs.

FIG. 6is a flow chart illustrating operations600for constructing a packaged IC according to an embodiment of the present disclosure. Operations600include forming first level conductive posts on a carrier substrate (e.g., the carrier substrate500ofFIG. 5A) at step602. Operations600continue with attaching (e.g., via an adhesive) a first side of a memory to the carrier substrate, the memory having a second side with conductive contacts for power inputs and data connections (step604). In the illustrated embodiment, the first level conductive posts and the memory are encapsulated with a first encapsulant that contacts the carrier substrate on a first side, the first encapsulant having an exposed second side (step606).

Operations600continue with placing a Redistribution Layer (RDL) on the exposed second side of the first encapsulant, wherein a first side of the RDL is disposed adjacent to and extending beyond the second side of the memory (step608), and forming second level conductive posts on a second side of the RDL (step610). Operations600further include placing a processor on the second side of the RDL such that a first portion of the memory is disposed outside a footprint of the processor and a second portion of the memory is disposed within the footprint of the processor (step612). In addition, the second level conductive posts and the processor are encapsulated with second encapsulant that contacts the second side of the RDL and has an exposed second side (step614). Operations600further include forming a fanout layer on the exposed second side of the second encapsulant, such that a first plurality of the second level conductive posts provide data communication links, via the RDL, between the processor and the memory, a second plurality of the second level conductive posts are coupled, via the RDL, to power inputs of the memory, and the first level conductive posts and a third plurality of the second level conductive posts form Through Mold Vias (TMVs) extending between the carrier substrate and the fanout layer (step616).

FIG. 7is a flow chart illustrating optional aspects of the method of the embodiment ofFIG. 6of the present disclosure. The optional aspects700ofFIG. 7include placing a dummy silicon substrate beside the memory (e.g., high bandwidth memory), wherein the encapsulant surrounds at least a portion of the dummy silicon substrate (step702). Other optional aspects700include removing the carrier substrate to expose the first level conductive posts (step704) and forming a ball grid array on the exposed first level conductive posts (step706). Additional optional aspects700include placing Package on Package (POP) memory on the ball grid array (step708) and forming a PCB ball grid array on an exposed surface of the fanout layer (step710).

As may be used herein, the terms “processor” and/or “processing unit” or their equivalents (such as identified above) may be a single processing device or a plurality of processing devices. Such a processing device may be a microprocessor, micro-controller, digital signal processor, microcomputer, central processing unit, field programmable gate array, programmable logic device, logic circuitry, analog circuitry, digital circuitry, and/or any device that manipulates signals (analog and/or digital) based on hard coding of the circuitry and/or operational instructions. A processor and/or processing unit may further include memory and/or an integrated memory element, which may be a single memory device, a plurality of memory devices, and/or embedded circuitry of another processor and/or processing unit. Such a memory device may be a read-only memory, random access memory, volatile memory, non-volatile memory, static memory, dynamic memory, flash memory, cache memory, and/or any device that stores digital information. Note that if the processor and/or processing unit includes more than one processing device, the processing devices may be directly coupled together via a wired and/or wireless bus structure.

One or more embodiments of the disclosure have been described above with the aid of method steps illustrating the performance of specified fabrication functions and relationships thereof. The boundaries and sequence of these functional building blocks and method steps have been arbitrarily defined herein for convenience of description. Alternate boundaries and sequences can be defined so long as the specified fabrication functions and relationships are appropriately performed. Any such alternate boundaries or sequences are thus within the scope and spirit of the claims. Further, the boundaries of these functional building blocks have been arbitrarily defined for convenience of description. Alternate boundaries could be defined if the certain significant functions are appropriately performed. Similarly, flow diagram blocks may also have been arbitrarily defined herein to illustrate certain significant fabrication functionality. To the extent used, the flow diagram block boundaries and sequence could have been defined otherwise and still perform the certain significant functionality. Such alternate definitions of both functional building blocks and flow diagram blocks and sequences are thus within the scope and spirit of the present disclosure.

The one or more embodiments are used herein to illustrate one or more aspects, one or more features, one or more concepts, and/or one or more examples of the disclosure. A physical embodiment of an apparatus, an article of manufacture, a machine, and/or of a process may include one or more of the aspects, features, concepts, examples, etc. described with reference to one or more of the embodiments discussed herein. Further, from Figure to Figure, the embodiments may incorporate the same or similarly named structures, steps, components, etc. that may use the same or different reference numbers and, as such, the structures, steps, components, etc. may be the same or similar structures, steps, components, etc. or different ones.