Abstract:
In various aspects and embodiments, the present disclosure relates to the manner in which precursor materials are provided to processing equipment and, more specifically, to the manner in which precursor materials of organic polymers are delivered to systems for forming and, in some embodiments, depositing the organic polymers. In one aspect, the disclosure relates to precursor supplies, which comprise vehicles, such as binders, supports and cartridges, for delivering a precursor material to a material processing system, such as a deposition system or other processing equipment. In another aspect, the disclosure relates to material processing systems with which the precursor supplies are configured to be used. Methods for preparing precursor supplies, using precursor supplies, providing process control, and recycling precursor supplies are also disclosed.

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application claims the benefit of priority under 35 U.S.C. §119(e) to U.S. Provisional Application No. 61/585,150, filed Jan. 10, 2012 and titled PRECURSOR SUPPLIES, MATERIAL PROCESSING SYSTEMS WITH WHICH PRECURSOR SUPPLIES ARE CONFIGURED TO BE USED AND ASSOCIATED METHODS, the entire disclosure of which is, by this reference, incorporated herein. 
    
    
     TECHNICAL FIELD 
     The present disclosure relates generally to apparatus and techniques for providing precursor materials of an organic polymer to an apparatus for processing the precursor materials and for depositing a material that includes the organic polymer. In more specific embodiments, this disclosure relates to apparatus and techniques for supplying parylene dimers to a parylene deposition system. 
     SUMMARY 
     In various aspects and embodiments, the present disclosure relates to the manner in which precursor materials are provided to processing equipment and, more specifically, to the manner in which precursor materials of organic polymers are delivered to systems for forming and, in some embodiments, depositing the organic polymers. As used herein, the term “precursor” includes the precursor material of an organic polymer, which may be provided in a pure or substantially pure form (e.g., at least 90% pure, at least 95% pure, at least 98% pure, at least 99% pure, at least 99.9% pure, etc.), and to mixtures of precursors and any additives (or their precursors). Methods for supplying precursors are also disclosed. Thus, this disclosure relates to various aspects of apparatus and methods for supplying precursors to material processing system, such as a deposition system. 
     In one aspect, the disclosure relates to precursor supplies, which comprise vehicles for delivering a precursor material to a material processing system, such as a deposition system or other processing equipment. In some embodiments, the precursor supply may also include additives to the organic polymer, or the precursors of such additives. A precursor supply may include a carrier for the precursor. The carrier may, in some embodiments, comprise, consist essentially of or consist of a solid or substantially solid mass of precursor material. In some embodiments, a support element may carry the precursor. A carrier may, in some embodiments, comprise a container that holds the precursor. 
     The precursor supply may comprise, consist essentially of or even consist of a solid or substantially solid mass (accounting for any porosity of the resulting structure or where the density of the precursor supply is, for any other reason, less than or equal to the density of the precursor material in its natural state; e.g., from the nature in which the material packs, etc.) of precursor, in which particles of the precursor may be held together; e.g., in a cake, etc. A precursor supply that comprises a solid or substantially solid mass may be formed to a desired solid shape or a substantially solid shape (e.g., a short, cylindrical puck or disk shape; a brick; a long cylindrical shape (e.g., log, rod, etc.); truncated pyramids or cones (which may be introduced into a material processing system in an upright orientation or in an inverted orientation; etc.), or smaller structures (e.g., pellets, balls, etc.). 
     Particles of a precursor supply that comprises, consists essentially of or consists of a solid or substantially solid mass may be held together by merely packing the precursor material (e.g., under pressure, heat, etc.). In such embodiments, the precursor material may act as a binder. Alternatively, a binder may hold particles of the precursor material together. A carrier that comprises a binder may hold particles of the precursor in the desired shape, and maintain the desired shape of the precursor supply during its storage, transportation and use. In some embodiments, the binder may comprise a material that will disintegrate or decompose when subjected to conditions under which the precursor is prepared, or processed, for deposition. Alternatively, the binder material may remain present at a location where the precursor material is introduced into, or at an input of, a material processing system and, thus, require subsequent removal from that location. In other embodiments, as the precursor material is drawn into the material processing system (e.g., by evaporation, etc.) and, thus, it may be incorporated into a film that results from the precursor material. 
     A carrier that comprises a support may enable a precursor supply to be configured in a shape that resembles the support. A support with a three-dimensional shape may carry a precursor in a way that defines a precursor with a three-dimensional shape similar to that of the support. As another example, when a support that has been configured as an elongated ribbon carries a precursor, the resulting precursor supply may also comprise an elongated ribbon. A support that comprises a film or sheet may define a film or sheet shaped precursor supply. Substantially two-dimensional embodiments of precursor supplies (e.g., ribbons, sheets, etc.) may be configured to be continuously fed into a material processing system. In embodiments of precursor supplies that include supports, a binder may secure the precursor to the support and to other quantities (e.g., particles, etc.) of the precursor. 
     When the carrier of a precursor supply comprises a container, the container may hold the precursor in a flowable form (e.g., in particles, powder, pellets, etc.). In some embodiments, the container may comprise a package that will withstand conditions in which the precursor material is vaporized and enable vaporized precursor material to escape the package. The container may, in other embodiments, comprise a cartridge specifically configured to be received and engaged by a correspondingly configured receptacle of a material processing system; thus, the container may include one or more features that are shaped to ensure that the proper type(s) of precursor is (are) used with a particular type of material processing system, that the container is properly inserted into the material processing system, or the like. One or more features of a container (e.g., identification, security or communication features, such as a radiofrequency identification device (RFID), a near field communications (NFC) tag, a bar code, a quick response code (QR code); a magnetic strip, a memory device, a hologram, a mechanical interlock, an electrical interlock, etc.) may be detected and/or scanned, read or otherwise recognized and/or communicated with by an appropriate element on a material processing system to ensure that the proper type(s) of precursor is (are) used with that material processing system, communicate the type(s) of precursor material being introduced into the material processing system (which may be programmed to present certain options to a system operator based on the type(s) of precursor materials that is (are) presented), communicate instructions and/or programming on operation of the material processing system, ensure that a precursor is only used prior to an expiration date, etc. 
     A container of a precursor supply may include one or more features that provide for desired, or tailored, processing rates (e.g., uniform or substantially uniform processing rates, processing rates that follow a set profile, etc.) throughout the entire use of the precursor supply (e.g., as long as the precursor supply includes precursor, etc.). A shape of a reservoir of the container may be configured to provide for tailored process rates. A material from which the container, or at least a portion of the container, is formed (e.g., a thermally conductive material that substantially uniformly conveys thermal energy, such as a ceramic material, a metallic material; etc.) may enable the precursor to be withdrawn from the container at a desired rate, or in accordance with a predetermined profile. Heating elements (e.g., thermally conductive structures, such as pins, rods, shelves, fins, or other shapes; optical heating elements; etc.), may be positioned adjacent to a reservoir of the container, extend into the reservoir, or otherwise be positioned in a manner that enables heating of the reservoir and/or its contents in a desired manner (e.g., to ensure that the precursor has a substantially uniform temperature, a desired non-uniform temperature profile, etc.), which may enable uniform or tailored processing parameters (e.g., vapor pressure, evaporation rate, etc.). 
     Other embodiments of precursor supplies (e.g., those with carriers that comprise binders, those with carriers that comprise supports, etc.) may also have external shapes that contribute to the uniformity of a processing rate (e.g., the vapor pressure of the precursor material as it is removed from the precursor supply, the rate at which the precursor is evaporated, etc.). A number of other factors may also influence the uniformity with which a precursor material is withdrawn from the precursor supply, such factors may include, but are certainly not limited to, the manner in which a precursor material is distributed throughout the precursor supply. 
     In some embodiments, a precursor supply may include a single precursor material, which may be uniformly distributed (e.g., have a uniform concentration, etc.) throughout its volume. In other embodiments, the precursor material may be distributed throughout the precursor supply in a gradient (e.g., with the highest concentration at a surface from which the precursor material is to be initially withdrawn, etc.). In still other embodiments, a precursor supply may include a plurality of different types of precursor materials. The different precursor materials of such an embodiment may be substantially discrete from one another (e.g., a lower layer of Parylene C and an upper layer of Parylene D, etc.), they may be separate, at opposite locations and optionally combined in varying amounts (e.g., in a gradient, mixed transition, etc.) between those opposite locations, or they may be blended with one another (e.g., homogeneously, etc.). 
     In its various embodiments, a precursor supply may include a premeasured quantity of precursor. The premeasured quantity may, in some embodiments, include a sufficient amount of precursor material to coat a single load of substrate (e.g., electronic devices under fabrication, etc.) or another whole number of substrate loads. 
     Examples of precursor materials include, without limitation, various types of Parylene dimers, which are precursors to various types of Parylene polymers, or Poly(p-xylylene). Among the various types of precursors to poly(p-xylylene) that may be used in a precursor supply are precursors to unsubstituted poly(p-xylylene) (e.g., Parylene N) and precursors to substituted poly(p-xylylene) (e.g., Parylene C, Parylene D, Parylene AF-4, Parylene SF, Parylene VT-4, Parylene CF, Parylene HT, Parylene A, Parylene AM, Parylene X, etc.). 
     A variety of additives may be included in a precursor. Additives may perform a variety of functions, including, without limitation, affecting or providing a particular process condition, such as enhancing temperature uniformity throughout a quantity of a precursor material; imparting a deposited material with a desired property (e.g., toughness, flexibility, porosity, vapor transmission, etc.); providing an indicator function (e.g., visibility, source identity, security, etc.); or any other function that may be desired in the deposited polymer. Some non-limiting examples of additives that may be included in a precursor include boron nitride (BN) (e.g., hexagonal BN, etc.), tracer materials (e.g., dyes, fluorescent materials, selectively reflective materials, etc.) that may be detected by known techniques (e.g., visually, spectrographically, etc.), and the like. 
     Methods for preparing a precursor material for delivery to a material processing system include measuring a quantity of the precursor material, optionally mixing the precursor material with a binder, an additive and/or at least one other precursor material, and optionally defining a concentration gradient of the precursor material. The precursor material may be incorporated into a precursor supply by way of a carrier (e.g., a binder, a support, a container, etc., or any combination of carriers). The precursor supply may be specifically configured for use with a particular type of material processing system. The precursor supply may be packaged for storage and/or transportation. 
     Methods for delivering a precursor material, along with any additives, to a material processing system include introducing a precursor supply having a predefined configuration into a corresponding receptacle of the material processing system. The material processing system may withdraw the precursor (e.g., by evaporation, etc.) at a uniform or substantially uniform rate, which may persist throughout substantially the entire volume (i.e., until only a residual amount (e.g., two percent or less, one percent or less, etc.) of the weight or volume) of the precursor supply remains. 
     In some embodiments, the material processing system may recognize whether or not the precursor supply is configured for use with the material processing system. If there is an attempt to use a precursor supply that has not been configured for use with the material processing system, the material processing system may provide an alert to an operator of the material processing system, or a send an alert to personnel of a facility in which the material processing system is being used, to a provider of the material processing system, or to a party from which the operator of the material processing system is obligated to obtain the precursor. 
     Embodiments of methods for recovering and using residual precursors are also disclosed. Such a method may include recovering residual precursors from the material processing system. In embodiments where a precursor supply that comprises a container (e.g., a cartridge, etc.) is introduced into a material processing system, the container may be recovered, any remaining (e.g., residual, etc.) precursor may be recovered therefrom, and the container may be cleaned and processed for subsequent reuse or disposal. Any precursor that may have been recovered from the container may be collected and repackaged in another container, or used in any other precursor supply. 
     Other aspects, as well as features and advantages of various aspects, of the disclosed subject matter will become apparent to one of ordinary skill in the art though consideration of the ensuing description, the accompanying drawings and the appended claims. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       In the drawings: 
         FIG. 1  illustrates an embodiment of a precursor supply that comprises a cake; such an embodiment may include a solid or substantially solid mass of particles of a precursor; 
         FIG. 2  shows an embodiment of precursor supply in which a precursor is carried by a support, such as the depicted elongated tape, or ribbon; 
         FIG. 3  depicts an embodiment of precursor supply that includes a container with a reservoir for holding a quantity of a precursor; 
         FIG. 4  illustrates another embodiment of a container for holding a quantity of a precursor; and 
         FIG. 5  illustrates a material processing system with which a precursor supply may be used. 
     
    
    
     DETAILED DESCRIPTION 
       FIGS. 1 through 5  depict various embodiments of precursor supplies that may be used to deliver a precursor material to processing equipment, such as a system for forming and, optionally, depositing an organic polymer. 
     Regardless of how a precursor supply is embodied, it includes one or more precursors of another, product material. Without limitation, the precursor may include precursor material of an organic material. In a specific embodiment the precursor material may include a precursor (e.g., a dimer, etc.) to a Parylene material (i.e., unsubstituted or substituted poly(p-xylylene). 
     In some embodiments, a precursor may include a plurality of precursor materials, which may be kept separately from one another, at least partially mixed (e.g., in a graded manner, etc.) or homogeneously mixed. The manner in which two or more precursor materials are combined may affect the manner in which they form a product, such as an organic polymer. For example, they may be arranged to sequentially form different products, which may be discrete from one another or gradually transition from one material to another. As another example, the product materials may be simultaneously formed and, in some embodiments, interspersed with one another. 
     In addition to a precursor material, a precursor may include one or more additives. Additives may perform a variety of functions, including, without limitation, affecting or providing a particular process condition, such as enhancing temperature uniformity throughout a quantity of a precursor material; imparting a deposited material with a desired property (e.g., toughness, flexibility, porosity, vapor transmission, etc.); providing an indicator function (e.g., visibility, source identity, security, etc.); a material that generates heat when exposed to certain conditions (e.g., oxygen, etc.); or any other function that may be desired in the deposited polymer. Some non-limiting examples of additives that may be included in a precursor include boron nitride (BN) (e.g., hexagonal BN, etc.), tracer materials (e.g., dyes, fluorescent materials, selectively reflective materials, etc.), and the like. 
     In its various embodiments, a precursor supply may include a premeasured quantity of precursor. The premeasured quantity may, in some embodiments, include a sufficient amount of precursor material to coat a single load of substrate (e.g., electronic devices under fabrication, etc.) or another whole number (e.g., 2, 3, 4, 5, etc.) of substrate loads. 
     The precursor supply  10  shown in  FIG. 1  comprises a solid or substantially solid mass that includes a precursor  12 . In some embodiments, a natural affinity of the materials (e.g., precursor material(s), any additives, etc.) and/or processing (e.g., the use of heat and/or pressure, etc.) of the precursor  12  may hold particles of the precursor  12  together in the solid or substantially solid mass. 
     In other embodiments, a binder  14 , or “carrier,” may be added to the precursor  12  to facilitate formation of the solid or substantially solid mass and to hold particles of the precursor material together in the solid or substantially solid mass. A binder  14  may comprise a material that will disintegrate or decompose when subjected to conditions under which the precursor is prepared, or processed, for deposition. In other embodiments, as the precursor material is drawn into the material processing system (e.g., by evaporation, etc.), the binder may comprise a material that remains at a location where the precursor supply was introduced into the material processing system. 
     In the illustrated embodiment, the precursor supply  10  has a disk, or puck, shape. Of course, other shapes of precursor supplies  10  are also within the scope of this disclosure. Such shapes may include, but are not limited to, rectangular prisms, or “bricks,” longer cylindrical shapes (e.g., logs, rods, etc.); truncated pyramids or cones, and the like. Various embodiments of precursor supply  10  shapes may be configured to provide for certain processing characteristics (e.g., vapor pressure, uniform processing rates, processing rates following a predetermined profile, etc.). Alternatively, the precursor supply  10  may comprise smaller units; for example, pellets or another desirable shape that may be continuously fed into a material processing system. 
       FIG. 2  illustrates an embodiment of a precursor supply  10 ′ in which a precursor material  12  is carried by a support  16 , which is also referred to herein as a “carrier.” In some embodiments, the precursor supply  10 ′ may also include a binder  14 , which may adhere the precursor material  12  to the support  16  and/or hold particles of the precursor material  12  together. The support  16  may, at least partially, define a shape of the precursor supply  10 ′. 
     In the depicted embodiment of precursor supply  10 ′, the support  16  is an elongated tape, or ribbon, providing a basis for the tape-like configuration of the precursor supply  10 ′. In other embodiments, the support  16  may be shaped as a film. In still other embodiments, the support  16  may have more of a three-dimensional shape. Intricately shaped supports  16  may provide bases for precursor supplies  10 ′ that have similarly intricate shapes. 
     As shown in  FIG. 3 , an embodiment of a precursor supply  10 ″ that comprises a container  20 , such as the depicted cartridge, is illustrated. The container  20  of a precursor supply  10 ″ may also be referred to herein as a “carrier.” The container  20  includes a reservoir  22  for receiving a quantity of precursor  12 . In some embodiments, the precursor  12  within the reservoir  22  may be in a flowable form (e.g., in particles, powder, pellets, liquids, etc.). In other embodiments, the precursor  12  within the reservoir  22  may comprise a solid or substantially solid mass. 
     The container  20  may be formed from any suitable material (e.g., a ceramic material, a metal, a polymer, etc.). The container  20  may be configured for multiple uses; i.e., it may be cleaned and/or recycled. Some configurations of containers  20  may seal the precursor  12  from external conditions (e.g., atmospheric conditions, human contact, etc.) during storage, transportation, and handling, as well as during introduction of the precursor supply  10 ″ into a material processing system. 
     The container  20  may, as in the depicted embodiment, comprise a cartridge. Such a container  20  may be specifically configured (e.g., shaped, include one or more features that are shaped, etc.) to be received and engaged by a correspondingly configured receptacle of a material processing system. 
     One or more communication features  24 , or identifiers, of the container  20  (e.g., identification, security or communication features, such as a radiofrequency identification device (RFID), a near field communications (NFC) tag, a bar code, a quick response code (QR code); a magnetic strip, a memory device, a hologram, a mechanical interlock, an electrical interlock, etc.) may be detected and/or scanned, read or otherwise recognized and/or communicated with by a corresponding feature (e.g., a reader, scanner, communication element, etc., of a type compatible with the communication feature  24  and known in the art) of a material processing system to ensure that the proper type of precursor  12  is used with that material processing system, that a precursor  12  is only used prior to an expiration date, etc. A communication feature  24  may communicate information about the precursor  12  in the container  20  to a material processing system. Without limitation, a communication feature  24  may ensure that the proper type(s) of precursor is (are) used with a particular type of material processing system. A communication feature  24  may communicate additional information about the precursor to a processing element of a material processing system. Depending upon the type and configuration of the communication feature  24 , the communication feature  24  may store, contain or otherwise embody that information and/or the communication feature  24  may function as a portal that communicates information from (and, optionally, to) an external, even remote, source (e.g., a central database, a cloud computing network, etc.). Optionally, by communicating information about the precursor  12  to a processing element of a material processing system, a communication feature  24  may enable the processing element (e.g., in response to programming of the processing element, etc.) to present an operator of the material processing system with certain options that correspond to that precursor  12 . A communication feature  24  may cause a processing element of a material processing system to automatically initiate certain programming (e.g., programming that causes the material processing system to operate in a prescribed manner, etc.) or communicate programming to a processing element of a material processing system. 
     The container  20  may include one or more features that provide for tailored processing rates (e.g., uniform or substantially uniform processing rates throughout the entire use of the precursor supply  10 ″ (e.g., as long as the reservoir  22  of the container  20  includes a useful amount of precursor  12 , etc.); processing rates that follow a predetermined profile; etc.). For example, a shape of the reservoir  22  may be configured to provide for tailored processing. As another example, a material from which the container  20 , or at least a portion of the container  20  is formed (e.g., a thermally conductive material that substantially uniformly conveys thermal energy, such as a ceramic material; etc.) may enable the precursor  12  to be withdrawn from the container at a desired rate, or in accordance with a desired withdrawal rate profile. Heating elements  26  may be associated with the reservoir  22  of the container in a manner that distributes temperature in a desired manner throughout the precursor  12 . The heating elements  26  may be configured to operate in a manner that ensures that the precursor  12  is processed uniformly or in accordance with a desired profile (e.g., withdrawn, evaporated, etc., from the reservoir  22  at a uniform or substantially uniform rate, in accordance with a predetermined rate profile, etc.). Operation of the heating elements may be independent from or under control of a processing element of the material processing system. Without limitation, heating elements  26  may be located adjacent to the reservoir  22  or extend into the reservoir. The heating elements  26  may, without limitation, comprise thermally conductive elements formed from thermally conductive material, optically conductive elements, or have any other suitable structure(s). Various examples of configurations for the heating elements  26  include, but are not limited to, pins, rods, shelves, fins, or other shapes. 
     In some embodiments, the container  20  may be configured to capture or retain any residue of the precursor  12  that may be generated as material is withdrawn from the reservoir  22 . In some embodiments, the capture or retention of precursor  12  residue may reduce or eliminate the need for cleaning one or more components of the material processing system with which the precursor supply  10 ″ is used. 
     Another embodiment of precursor supply  10 ″′ is illustrated by  FIG. 4 . The precursor supply  10 ″′ includes a container  20 ′ for containing a precursor  12 . The container  20 ′ may be configured to be introduced into a material processing system along with the precursor  12  ( FIGS. 1 through 3 ) and, thus, to introduce the precursor into the material processing system. 
     In the specific but non-limiting embodiment shown in  FIG. 4 , the container  20 ′ comprises a package (e.g., an envelope, a box, etc.). In addition to including a reservoir (e.g., the inside of the package, etc.—not shown) configured to hold a quantity of the precursor  12  ( FIGS. 1 through 3 ), the container  20 ′ may be configured to enable transportation (e.g., shipping, etc.) and storage of the precursor  12 . When the container  20 ′ is used to store or transport the precursor  12 , a sealing element  21 ′ may cover a portion of a surface of the container  20 ′. The sealing element  21 ′ may be removably secured to the container  20 ′. In a specific embodiment, the sealing element  21 ′ may comprise a label (e.g., a shipping label, a label that provides information about the contents of the container  20 ′ (e.g., the precursor  12 , etc.) of their use, etc.). 
     The sealing element  21 ′ may cover one or more passageways  23 ′ through the container  20 ′ that enable transmission of the precursor  12  ( FIGS. 1 through 3 ) from the reservoir (not shown) within the container  20 ′ to an exterior of the container  20 ′. In some embodiments, a plurality of passageways  23 ′ may extend through the container  20 ′. Non-limiting examples of passageways  23 ′ include perforations or holes, permeable or semi-permeable materials (e.g., screens, filter paper, porous polymers, etc.) and the like. Alternatively, a container  20 ′ may include a single passageway  23 ′, such as a single opening or window through a portion of the container  20 ′. 
     During storage or transportation of the container  20 ′ and its contents (e.g., the precursor  12  ( FIGS. 1 through 3 ), etc.), the sealing element  21 ′ may cover each passageway  23 ′ to prevent removal of the contents of the reservoir (not shown) from the container  20 ′ through one or more passageways  23 ′. When removal of the contents from the container  20 ′ is desired (e.g., to deposit a coating (e.g., a protective coating, a moisture-resistant coating, etc.) onto a substrate, etc.), the sealing element  21 ′ may be removed from a remainder of the container  20 ′ to expose one or more passageways  23 ′. The contents of the container  20 ′ may then be transported from the reservoir, through one or more passageways  23 ′ to an exterior of the container  20 ′ (e.g., when exposed to certain conditions, such as conditions that will vaporize the precursor  12 , etc.). In embodiments where a portion of the contents of the container  20 ′ remain in the reservoir, the sealing element  21 ′ may be repositioned over the passageway(s)  23 ′ and secured in place thereover until further access to the contents of the container  20 ′ is desired. 
     A precursor supply  10 ″′ with a container  20 ′ configured as a package may also include a communication feature  24 . A communication feature  24  may be carried by the container  20 ′; for example, the communication feature  24  may be located within the reservoir of the container  20 ′, secured to the container  20 ′, printed on the container  20 ′ or formed as part of the container  20 ′. 
     In various embodiments, the precursor supply  10 ,  10 ′,  10 ″,  10 ″′ may provide for a zero discharge coating system. 
     Reference is now made to  FIG. 5 , which depicts an embodiment of a material processing system  30  with which a precursor supply, such as the embodiments of precursor supplies  10 ,  10 ′,  10 ″,  10 ″′ depicted by and described in reference to  FIGS. 1 through 4 , may be used. The material processing system  30  includes a receptacle  32  for receiving a precursor supply  10 ,  10 ′,  10 ″,  10 ″′. In various embodiments, the material processing system  30  may include features such as those disclosed by U.S. patent application Ser. No. 13/736,753, filed on Jan. 8, 2013 and titled SYSTEMS FOR ASSEMBLING ELECTRONIC DEVICES WITH INTERNAL MOISTURE RESISTANT COATINGS (“the &#39;753 Application”) and be incorporated into an assembly system, such as that disclosed by the &#39;753 Application, or into another assembly, manufacturing or fabrication facility. The entire disclosures of the &#39;753 Application is, by this reference, incorporated herein. 
     The receptacle  32  may be configured to receive precursor  12  in a compact, flowable form (e.g., pellets, balls, etc.). Such a precursor  12  may be dropped, placed or pushed into the receptacle  32  by any suitable means for introduction. 
     Alternatively, the receptacle  32  may comprise means for continuously introducing precursor  12  into the material processing system  30 . Such means for continuously introducing precursor  12  may be configured to drive a continuous or semi-continuous element (e.g., an elongated ribbon, sheet, tube, cylinder, etc.) into the material processing system  30 . 
     As another alternative, the receptacle  32  may be configured to only receive precursor supplies  10 ,  10 ′,  10 ″,  10 ″′ of predetermined configurations (e.g., with appropriate sizes and shapes, with approved identification and/or security features, etc.). In some embodiments, the receptacle  32  may also be configured to define an orientation in which the precursor supply  10 ,  10 ′,  10 ″,  10 ″′ is introduced and, thus, to prevent misintroduction of the precursor supply  10 ,  10 ′,  10 ″,  10 ″′. 
     In any event, the receptacle  32  may include means for maintaining a pressure (e.g., a negative pressure, or vacuum, etc.) within the material processing system. Non-limiting examples of means for maintaining the pressure include load lock systems, sealing rings (e.g., O-rings, etc.) for continuous feed systems, and other mechanical isolation means. 
     A material processing system  30  may also include a detection element  34 , which may interact with an additive of the precursor  12  ( FIGS. 1 through 3 ) (e.g., a tracer, etc.) or a communication feature  24  ( FIG. 3 ). The detection element  34  may be configured to detect or derive information from the precursor supply  10 ,  10 ′,  10 ″,  10 ″′. 
     Information detected or derived by the detection element  34  of a material processing system  30  may be conveyed to a processing element  36  (e.g., a computer, etc.) of or associated with the material processing system  30 . If the information conveyed to the processing element  36  does not correspond to expected information, the processing element  36  may take any of a variety of different actions. As a non-limiting example, in response to receiving incorrect information or no information (e.g., if the precursor supply  10 ,  10 ′,  10 ″,  10 ″′ lacks a communication feature  24 , if the precursor supply  10 ,  10 ′,  10 ″,  10 ″′ has been improperly positioned within the receptacle  32 , if the precursor supply  10 ,  10 ′,  10 ″,  10 ″′ includes the wrong precursor, etc), the processing element  36  may, prevent operation of one or more processing stations (e.g., an evaporation chamber  38 , a pyrolysis chamber  40 , a deposition chamber  42 , etc.) of the material processing system  30 . The processing element  36  may provide an operator with a warning that the precursor supply  10 ,  10 ′,  10 ″,  10 ″′ has been improperly introduced into the receptacle  32  or that an improper precursor supply  10 ,  10 ′,  10 ″,  10 ″′ has been introduced into the receptacle  32 . 
     A detection element  34  may receive information from a communication feature  24  of a container  20 ,  20 ′ ( FIGS. 3 and 4 ). That information may be conveyed to the processing element  36 , which may process the information and take appropriate action, if any. As a non-limiting example, the detection element  34  may receive information from a communication feature  24  on the type of precursor  12  contained within a container  20 ,  20 ′. Upon receiving that information, the processing element  36  may compare it to expected information (e.g., information about a type of precursor  12  that may be used with the material processing system  30 ). Operation of the material processing system  30  may be dependent upon receipt of appropriate information. In other examples, the information conveyed from the communication feature  24  to the detection element  34  and by the detection element  34  to the processing element  36  may enable the processing element  36  (e.g., in response to receiving information about the mass and/or volume of precursor  12  supplied to the material processing system  30 , in response to programming of the processing element  36 , etc.) to present an operator of the material processing system  30  with certain options that correspond to that precursor  12 , cause the processing element  36  to automatically initiate certain programming (e.g., programming that causes the material processing system  30  to operate in a prescribed manner, etc.) or communicate programming to the processing element  36 . The processing element  36  may also communicate with other processing elements in a manufacturing or assembly line. 
     Optionally, the processing element  36  may send messages to remotely located parties. As a few examples, the processing element  36  may convey messages to personnel or other equipment in a facility in which the material processing system  30  is being used, to a provider of the material processing system  30 , to a designated provider of maintenance and/or repair services for the material processing system  30  or to a party from which the operator of the material processing system  30  is obligated to obtain the precursor. Examples of the types of messages that may be conveyed may include prompts for an operator of the material processing system  30  to select from a variety of options; warnings for the operator of the material processing system  30 ; reports to the provider of the material processing system  30  on use of the system, including information that may be useful in determining whether scheduled maintenance should be performed, information on unscheduled maintenance that should be performed, information that enables the provider and a supplier of the precursor to correlate use of the material processing system  30  with the amount of precursor purchased from the supplier, etc.; etc. 
     A material processing system  30  may also include one or more components, which may be associated with the receptacle  32  or other parts of the system, for monitoring an amount of precursor  12  ( FIGS. 1 through 3 ) that remains in the receptacle  32 . Such information may be useful for quality control purposes (e.g., verifying process rates, etc.), for providing information that may be used to introduce more precursor  12  into the receptacle  32 , for inventory control, and/or for any other suitable purpose. 
     In a specific embodiment, the material processing system  30  may comprise a system for depositing an organic polymer, such as the type of system disclosed by U.S. patent application Ser. Nos. 12/104,080, 12/104,152 and 12/988,103, the entire disclosure of each of which is, by this reference, hereby incorporated herein. In a more specific embodiment, such an apparatus may be configured to deposit a Parylene. The embodiment of material processing system  30  depicted by  FIG. 5  includes an evaporation chamber  38 , which communicates with, and is configured to receive a precursor material from, the receptacle  32 . A pyrolysis chamber  40  is located downstream from the evaporation chamber  38 . Reactive species may be drawn from the pryolysis chamber into a deposition chamber  42 , which may communicate with a vacuum pump  44  (other vacuum pumps may, of course, be associated with the evaporation chamber  38  and the pyrolysis chamber  40 ) and other elements that may facilitate polymerization and the deposition of an organic polymer onto a substrate. One or more valves  46 , which may operate under control of the processing element  36 , may control the flow of materials through the material processing system  30 . 
     In various embodiments, the precursor supply  10 ,  10 ′,  10 ″,  10 ″′ and the receptacle  32  of a material processing system  30  may be configured to minimize any interruption to the vacuum drawing materials through the material processing system  30 . The receptacle  32  and the precursor supply  10 ,  10 ′,  10 ″,  10 ″′ may be configured to feed the precursor  12  ( FIGS. 1 through 3 ) batch-wise or continuously into the material processing system  30 . By way of example, load lock systems, sealed rotary valve feeders or other means may be employed. 
     Various embodiments of apparatus, systems and methods disclosed herein may improve the manner in which precursor materials are processed (e.g., evaporated, pyrolyzed and deposited, etc.). For example, an apparatus, system and/or method of this disclosure may provide for precise process control, including control over process rates (e.g., uniform process rates, process rates that follow a predetermined profile, etc.). The disclosed apparatus, systems and/or methods may also enable processing (e.g., conformal coating of a large number of substrates, such as electronic components, electronic component assemblies, electronic devices, etc.). 
     Although the foregoing description contains many specifics, these should not be construed as limiting the scope of the disclosed subject matter or of any of the appended claims, but merely as providing information pertinent to some specific embodiments that may fall within the scopes of the claims. Features from different embodiments may be employed in combination. In addition, other embodiments of the disclosed subject matter may also be devised which lie within the scopes of the appended claims. The scope of each claim is, therefore, indicated and limited only by the plain language of that claim and the legal equivalents to the subject matter recited by that claim. All additions, deletions and modifications to the disclosed subject matter that fall within the meanings and scopes of the claims are to be embraced by the claims.