A portion of the disclosure of this patent document contains material that is subject to copyright protection. The copyright owner has no objection to the facsimile reproduction by anyone of the patent document or the patent disclosure, as it appears in the Patent and Trademark Office patent files or records, but otherwise reserves all copyright rights whatsoever.
The present disclosure relates generally to speaker or other electrical or electronic apparatus for use in devices such as wireless or portable audio or radio devices (e.g., mobile phones, tablet computer, portable speaker units, etc.), and more particularly in one exemplary aspect to a low-profile electronic apparatus and methods of manufacturing and utilizing the same.
Internal speakers are commonly found in most modern radio devices, such as mobile computers, tablets, mobile phones, Blackberry® devices, smartphones, personal digital assistants (PDAs), or other personal communication devices (PCD). Typically, these speakers comprise a substantially square or rectangular form factor, and include, inter alia, a moving diaphragm (aka speaker driver or cone) that is driven through the application of electrical signals to a moving coil attached to the diaphragm and driven by an electromagnet. These speakers are used to convert electrical signals to an audible output in the range of human hearing (20 Hz-20 KHz), such as to play music, render the audio portion of a video clip, etc.
Typically, these internal speaker assemblies 100 are located within the confines of the external device housing 102 (e.g., smartphone or tablet outer case), disposed on a flexible printed circuit board (PCB) of the radio device using e.g., surface mount technology (SMT) pads 104 or laser direct structuring (LDS) traces, the PCB which is mounted onto the outer plastic or metallic housing or case. See, e.g., the exemplary prior art approach depicted in
Using the foregoing LDS process for example, the contacts can be formed directly onto the surface of a specialized material (e.g., thermoplastic material that is doped with a metal additive). The doped metal additive is activated by means of a laser. In various typical smartphone and other applications, the underlying smartphone housing, and/or other components which the contacts or other components may be disposed on the inside of the device, may be manufactured using this specialized material, such as for example using standard injection molding processes. A laser is then used to activate areas of the (thermoplastic) material that are to be subsequently plated. Typically an electrolytic copper bath followed by successive additive layers such as nickel or gold are then added to complete the construction of the antenna. Although being very capable technology, LDS also has some disadvantages; specialized thermoplastics' material properties do not meet the properties of traditional polymer materials, but are typically more brittle or fragile. Another disadvantage is the total cost; specialized thermoplastics' resins cost more than traditional ones, and lasering and plating processes are expensive. The capital cost of the LDS capacity also represents a significant barrier to entry into the technology.
Regardless of which of the foregoing approaches is chosen, the presence of an appreciable amount of material in the region 110 underneath the speaker assembly 102 is necessitated, as shown in
Even where vertical profile is not a critical attribute, any reduction in required volume consumed by a given component is typically useful/welcomed in terms of providing additional design flexibility, the ability to include or accommodate other components, and so forth.
Moreover, the acoustic properties and performance of a given speaker element or system may be adversely affected by having limitations on space on the enclosure within which it is contained or mounted. Specifically, certain speakers require a certain enclosure volume to adequately perform in certain frequency ranges, especially lower frequencies. Hence, some speakers, when installed in such enclosures, will have very sharp roll-off or non-linearity in their acoustic output as a function of frequency, which is undesirable in that it can lead to very uneven, weak performance (e.g., very poor bass response). Sometimes, even small amounts of additional volume within an enclosure can make a (small) speaker element sound “richer”.
Accordingly, there is a salient need for a speaker mounting and interconnection solution for e.g., a portable audio or radio device that offers comparable electrical interconnection capabilities to prior art approaches, while being manufactured at lower cost and providing enhanced economies of space. Certain implementations of such a solution would also ideally utilize more flexible manufacturing processes, including obviating high capital investment cost-technologies such as LDS, and could even be used for mounting other types of electronic components in a low-profile manner.
The present disclosure satisfies the foregoing needs by providing, inter alia, a reduced-profile and volume electronic (e.g., speaker) apparatus and methods of manufacturing.
In a first aspect of the disclosure, a speaker apparatus is disclosed. In one embodiment, the apparatus is configured for use in a portable communications device (such as a smartphone or tablet computer), and the apparatus includes an audio speaker, and a support element with at least one conductive trace, the at least one trace mated to a terminal of the audio speaker, the speaker received at least partly within an interior volume of the support element, such that the support element and speaker can be received within an aperture or recess of a host device housing.
In a second aspect of the disclosure, a portable device is disclosed. In one embodiment, the portable device includes one or more low-profile speaker apparatus disposed substantially within a housing thereof.
In another embodiment, the portable device includes: at least one audio speaker; electronic circuitry configured to drive the at least one audio speaker; an outer housing; and electronic component mounting apparatus. In one implementation, the component mounting apparatus includes: a substantially planar metallic base; a plurality of sidewall elements in communication with the substantially planar base; a substantially insulating coating applied to at least portions of the base; and at least one conductive trace applied to the insulating coating so as to form an electrical component contact for interface with one or more terminals of the at least one audio speaker. In one variant, the outer housing comprises at least one of a recess or aperture into which the electronic component mounting apparatus and at least one audio speaker may be at least partly received, such that the at least one conductive trace may interface with a corresponding electrical contact of the electronic circuitry.
In a third aspect of the disclosure, an electronic component mounting apparatus is disclosed. In one embodiment, the mounting apparatus is for use in a portable electronic device, the apparatus, and includes: a substantially planar metallic base; a plurality of sidewall elements in communication with the substantially planar base; a substantially insulating coating applied to at least portions of the base; and at least one conductive trace applied to the insulating coating so as to form an electrical component contact for interface with one or more terminals of the electronic component.
In a fourth aspect of the disclosure, a device housing element for use with one or more speaker apparatus is disclosed. In one embodiment, the housing element includes a recess within which the aforementioned support element can reside. In another embodiment, the housing element includes an aperture within which the support element can be received.
In a fifth aspect of the disclosure, a method of manufacturing a component (e.g., speaker) support element is disclosed.
In a sixth aspect of the disclosure, a method of manufacturing a portable electronic device with a low-profile speaker apparatus is disclosed.
In another aspect, a method of reducing a vertical profile of an electronic component installed within an interior volume of a device housing of a host electronic device is disclosed. In one embodiment, the method includes: forming at least one of a recess or aperture within a surface of the device housing; forming a thin-walled support element configured to receive at least a portion of the electronic component in an interior volume thereof, the support element configured to fit substantially within the at least one recess or aperture; forming at least one conductive trace on at least one surface of the support element, the at least one trace configured to enable electrical current to flow between the electronic component and a circuit of the host electronic device; disposing the support element with the at least one recess or aperture; disposing the electronic component at least partly within the support element; and bonding at least one terminal of the electronic component to the at least one trace. In one variant, the thin-walled support element and the at least one recess or aperture cooperate to cause the reduction of the vertical profile.
Further features of the present disclosure, its nature and various advantages will be more apparent from the accompanying drawings and the following detailed description.
The features, objectives, and advantages of the disclosure will become more apparent from the detailed description set forth below when taken in conjunction with the drawings, wherein:
All Figures disclosed herein are © Copyright 2015-2016 Pulse Finland Oy. All rights reserved.
Reference is now made to the drawings wherein like numerals refer to like parts throughout. As used herein, the terms “board” and “substrate” refer generally and without limitation to any substantially planar, stepped, or curved surface or component upon which other components can be disposed. For example, a substrate may comprise a single or multi-layered printed circuit board (e.g., FR4), a semi-conductive die or wafer, or even a surface of a housing or other device component, and may be substantially rigid or alternatively at least somewhat flexible.
As used herein, the terms “portable device”, “mobile computing device”, “client device”, “portable computing device”, and “end user device” include, but are not limited to, personal computers (PCs) and minicomputers, whether desktop, laptop, or otherwise, set-top boxes, personal digital assistants (PDAs), handheld computers, personal communicators, tablet computers, portable navigation aids, J2ME equipped devices, cellular telephones, smartphones, personal integrated communication or entertainment devices, or literally any other device capable of interchanging data with a network or another device.
As used herein, the terms “speaker”, “speaker component” and “speaker element” refer without limitation to any device capable of emitting acoustic energy within one or more desired frequency ranges. Speakers may include, purely as examples, cone-and-coil type devices, piezoelectric transducers, phased array audio systems, passive radiators, sub-acoustic transducers (e.g., sub-woofers), plasma arc devices, electrostatic speakers, etc.
As used herein, the terms “top”, “bottom”, “side”, “up”, “down”, “left”, “right”, and the like merely connote a relative position or geometry of one component to another, and in no way connote an absolute frame of reference or any required orientation. For example, a “top” portion of a component may actually reside below a “bottom” portion when the component is mounted to another device (e.g., to the underside of a PCB).
As used herein, the term “wireless” means any wireless signal, data, communication, or other interface including without limitation Wi-Fi, Bluetooth, 3G (e.g., 3GPP, 3GPP2, and UMTS), HSDPA/HSUPA, TDMA, CDMA (e.g., IS-95A, WCDMA, etc.), FHSS, DSSS, GSM, PAN/802.15, WiMAX (802.16), 802.20, narrowband/FDMA, OFDM, PCS/DCS, Long Term Evolution (LTE) or LTE-Advanced (LTE-A), analog cellular, CDPD, satellite systems such as GPS, millimeter wave or microwave systems, optical, acoustic, and infrared (i.e., IrDA).
Overview
The present disclosure provides, in one salient aspect, methods and apparatus for reducing the profile of electronic components (such as e.g., audio speakers) installed in electronic devices, such as e.g., within “thin” devices such as smartphones, tablets, and laptop computers. Concurrently, reductions in interior volume consumed by such components within the host device, and interference between such components and antennae of the host device, may be realized as well.
Advantageously, the various aspects of the present disclosure can be applied to any number of types of mobile or non-mobile devices, and also may obviate use of more costly and/or complicated processes such as laser direct structuring (LDS).
In one implementation, the methods and apparatus include replacement of a portion of the host device housing in the desired installation location with an insert or support element of significantly lower width than the surrounding housing. In this fashion, the component(s) (e.g., speaker) are recessed into the housing volume, thereby reducing their vertical profile within the interior volume of the host device.
In one variant, a direct deposition process is used to deposit conductive traces on the insert or support element in order to facilitate electrical connection and reduce manufacturing cost.
Detailed descriptions of the various embodiments and variants of the apparatus and methods of the disclosure are now provided. While primarily discussed in the context of audio speakers associated with mobile wireless devices such as smartphones, laptops or tablet computers, the various apparatus and methodologies discussed herein are not so limited. In fact, many of the apparatus and methodologies described herein are useful in any number of applications, whether associated with mobile or fixed devices, that can benefit from the low-profile, simplified methodologies and apparatus described herein. For example, the techniques described herein may find utility in any space-constrained device or environment where one or more electronic devices are mounted therein.
Exemplary Apparatus and Mobile Device
Referring now to
It is also recognized that, particularly with respect to the embodiment of
Referring now to
As shown in
Referring now to
Referring now to
Referring now to
As shown in
Methods of Manufacturing—
Next, per step 604, the (two dimensional) material shape is formed into the three-dimensional shape shown in
Next, per step 606, the formed support element 202 is then coated wholly or partly with an electrically insulating material. For example, in one embodiment the coating can be applied using any number of techniques including vapor deposition, spraying (e.g., via atomization gun), dip-coating, etc. In one implementation, the coating is deposited so as to provide adequate electrical insulation yet not unnecessarily increase the thickness of the support element 202 as a whole. Alternatively, the support element may be oxidized using well understood techniques in order to provide the requisite level of insulation. It is also appreciated that the aforementioned coating can be applied prior to any of the steps of the method 600, e.g., at time of manufacture of the sheet/roll stock, or before deformation but after cutting.
Next, per step 608, the conductive traces are disposed onto the relevant support element surfaces. In one variant, a conductive ink or fluid deposition technique is applied, using for example the methods and apparatus disclosed in co-owned U.S. patent application Ser. No. 14/736,040 filed Jun. 10, 2015 entitled “METHODS AND APPARATUS FOR CONDUCTIVE ELEMENT DEPOSITION AND FORMATION”, which claims priority to U.S. Provisional Patent Application Ser. No. 62/018,410 filed Jun. 27, 2014 entitled “METHODS AND APPARATUS FOR CONDUCTIVE ELEMENT DEPOSITION AND FORMATION”, as well as U.S. Provisional Patent Application Ser. No. 62/026,560 filed Jul. 18, 2014 entitled “METHODS AND APPARATUS FOR CONDUCTIVE ELEMENT DEPOSITION AND FORMATION”, and/or co-owned and co-pending U.S. patent application Ser. No. 13/782,993 entitled “DEPOSITION ANTENNA APPARATUS AND METHODS” filed Mar. 1, 2013, which claims priority to U.S. Provisional Patent Application Ser. No. 61/606,320 of the same title filed Mar. 2, 2012, U.S. Provisional Patent Application Ser. No. 61/609,868 of the same title filed Mar. 12, 2012, and U.S. Provisional Patent Application Ser. No. 61/750,207 of the same title filed Jan. 8, 2013, and/or U.S. patent application Ser. No. 14/620,108 filed Feb. 11, 2015 and entitled “METHODS AND APPARATUS FOR CONDUCTIVE ELEMENT DEPOSITION AND FORMATION”, which claims priority to U.S. Provisional Patent Application Ser. No. 61/939,197 entitled “DEPOSITION ANTENNA APPARATUS AND METHODS” filed Feb. 12, 2014, each of the foregoing incorporated herein by reference supra. Using such techniques, the traces can be readily applied to various three-dimensional geometries, and easily cured thereafter, thereby providing a rapid and cost-efficient approach to conductive trace formation. Other techniques may be used as well, such as for example use of templates or masks combined with large area spray deposition, silk screening techniques, etc. As above, the conductive trace deposition and/or curing process (if required) can be performed at various points within the manufacturing method 500, such as at time of material stock fabrication, after cutting but before forming, etc. The conductive traces can also be formed in two or more parts, such as where one portion is deposited prior to material deformation, and another deposited after the deformation, so as to ensure that the trace electrical and mechanical properties are not compromised during bending or deformation of the underlying material.
Next, at step 610, the support element 202 is insert molded using a polymer material in order to form the polymer housing. While the use of insert-molding is exemplary, it is readily appreciated that other known techniques may be utilized such as transfer molding techniques, etc.
Finally, at step 612, the speaker component 302 is placed within the support element 202 and the conductive leads present on the speaker component are attached to the conductive traces 207 thereby finishing the manufacturing process.
Next, per step 704, the (two dimensional) material shape is formed into the three-dimensional shape shown in
Next, per step 706, the formed support element 252 is then coated wholly or partly with an electrically insulating material. For example, in one embodiment the coating can be applied using any number of techniques including vapor deposition, spraying (e.g., via atomization gun), dip-coating, etc. In one implementation, the coating is deposited so as to provide adequate electrical insulation yet not unnecessarily increase the thickness of the support element 252 as a whole. Alternatively, the support element may be oxidized using well understood techniques in order to provide the requisite level of insulation. It is also appreciated that the aforementioned coating can be applied prior to any of the steps of the method 700, e.g., at time of manufacture of the sheet/roll stock, or before deformation but after cutting.
Next, at step 710, the support element 252 is insert molded using a polymer material in order to form the polymer housing. While the use of insert-molding is exemplary, it is readily appreciated that other known techniques may be utilized such as transfer molding techniques, etc. Moreover, the support element 252 and the housing element 304 may be separately formed with the support element 252 subsequently post-inserted into the housing element (i.e., after the housing element 304 has been formed)
Next, per step 710, the conductive traces are disposed onto the relevant support element surfaces. In one variant, a conductive ink or fluid deposition technique is applied, using for example the methods and apparatus disclosed in co-owned U.S. patent application Ser. No. 14/736,040 filed Jun. 10, 2015 entitled “METHODS AND APPARATUS FOR CONDUCTIVE ELEMENT DEPOSITION AND FORMATION”, which claims priority to U.S. Provisional Patent Application Ser. No. 62/018,410 filed Jun. 27, 2014 entitled “METHODS AND APPARATUS FOR CONDUCTIVE ELEMENT DEPOSITION AND FORMATION”, as well as U.S. Provisional Patent Application Ser. No. 62/026,560 filed Jul. 18, 2014 entitled “METHODS AND APPARATUS FOR CONDUCTIVE ELEMENT DEPOSITION AND FORMATION”, and/or co-owned and co-pending U.S. patent application Ser. No. 13/782,993 entitled “DEPOSITION ANTENNA APPARATUS AND METHODS” filed Mar. 1, 2013, which claims priority to U.S. Provisional Patent Application Ser. No. 61/606,320 of the same title filed Mar. 2, 2012, U.S. Provisional Patent Application Ser. No. 61/609,868 of the same title filed Mar. 12, 2012, and U.S. Provisional Patent Application Ser. No. 61/750,207 of the same title filed Jan. 8, 2013, and/or U.S. patent application Ser. No. 14/620,108 filed Feb. 11, 2015 and entitled “METHODS AND APPARATUS FOR CONDUCTIVE ELEMENT DEPOSITION AND FORMATION”, which claims priority to U.S. Provisional Patent Application Ser. No. 61/939,197 entitled “DEPOSITION ANTENNA APPARATUS AND METHODS” filed Feb. 12, 2014, each of the foregoing incorporated herein by reference supra. Using such techniques, the traces can be readily applied to various three-dimensional geometries, and easily cured thereafter, thereby providing a rapid and cost-efficient approach to conductive trace formation. Other techniques may be used as well, such as for example use of templates or masks combined with large area spray deposition, silk screening techniques, etc. As above, the conductive trace deposition and/or curing process (if required) can be performed at various points within the manufacturing method 500, such as at time of material stock fabrication, after cutting but before forming, etc. The conductive traces can also be formed in two or more parts, such as where one portion is deposited prior to material deformation, and another deposited after the deformation, so as to ensure that the trace electrical and mechanical properties are not compromised during bending or deformation of the underlying material.
Finally, at step 712, the speaker component 302 is placed within the support element 252 and the conductive leads present on the speaker component are attached to the conductive traces 207 thereby finishing the manufacturing process.
It will be recognized that while certain aspects of the disclosure are described in terms of a specific sequence of steps of a method, these descriptions are only illustrative of the broader methods of the disclosure, and may be modified as required by the particular application. Certain steps may be rendered unnecessary or optional under certain circumstances. Additionally, certain steps or functionality may be added to the disclosed embodiments, or the order of performance of two or more steps permuted. All such variations are considered to be encompassed within the disclosure disclosed and claimed herein.
While the above detailed description has shown, described, and pointed out novel features of the disclosure as applied to various embodiments, it will be understood that various omissions, substitutions, and changes in the form and details of the device or process illustrated may be made by those skilled in the art without departing from the disclosure. The foregoing description is of the best mode presently contemplated of carrying out the disclosure. This description is in no way meant to be limiting, but rather should be taken as illustrative of the general principles of the disclosure. The scope of the disclosure should be determined with reference to the claims.
Number | Name | Date | Kind |
---|---|---|---|
20130229314 | Kuehler et al. | Sep 2013 | A1 |
20150110335 | Telemaque | Apr 2015 | A1 |
20150229025 | Kalistaja et al. | Aug 2015 | A1 |
20150237429 | Ryan | Aug 2015 | A1 |
20150375246 | Kalistaja et al. | Dec 2015 | A1 |