Field of the Invention
The present invention relates to marking products and, more particularly, marking outer housing surfaces of electronic devices.
Description of the Related Art
Consumer products, such as electronic devices, have been marked with different information for many years. For example, it is common for electronic devices to be marked with a serial number, model number, copyright information and the like. Conventionally, such marking is done with an ink printing or stamping process. Although conventional ink printing and stamping is useful for many situations, such techniques can be inadequate in the case of handheld electronic devices. The small form factor of handheld electronic devices, such as mobile phones, portable media players and Personal Digital Assistants (PDAs), requires that the marking be very small. In order for such small marking to be legible, the marking must be accurately and precisely formed. Unfortunately, however, conventional techniques are not able to offer sufficient accuracy and precision. Thus, there is a need for improved techniques to mark products.
The invention pertains to techniques or processes for providing markings on products. In one embodiment, the products have housings and the markings are to be provided on sub-surfaces of the housings. For example, a housing for a particular product can include an outer housing surface and the markings can be provided on a sub-surface the outer housing surface yet still be visible from the outside of the housing. Since the markings are beneath the surface of the housing, the markings are durable. The markings provided on products can be textual and/or graphic. The markings can be formed with high resolution. The markings are also able to be dark, even on metal surfaces.
In general, the markings (also referred to as annotations or labeling) provided on products according to the invention can be textual and/or graphic. The markings can be used to provide a product (e.g., a product's housing) with certain information. The marking can, for example, be use to label the product with various information. When a marking includes text, the text can provide information concerning the product (e.g., electronic device). For example, the text can include one or more of: name of product, trademark or copyright information, design location, assembly location, model number, serial number, license number, agency approvals, standards compliance, electronic codes, memory of device, and the like). When a marking includes a graphic, the graphic can pertain to a logo, a certification mark, standards mark or an approval mark that is often associated with the product. The marking can be used for advertisements to be provided on products. The markings can also be used for customization (e.g., user customization) of a housing of a product.
The invention can be implemented in numerous ways, including as a method, system, device, or apparatus. Several embodiments of the invention are discussed below.
As a method for marking an article, one embodiment can, for example, include at least providing a metal structure for the article, anodizing at least a first surface of the metal structure; and subsequently altering surface characteristics of selective portions of an inner unanodized surface of the metal structure. In one embodiment, the altering of the surface characteristics can be performed by directing a laser output through the anodized first surface of the metal structure towards the inner unanodized surface of the metal structure.
As an electronic device housing, one embodiment of the invention can, for example, include at least a housing structure that includes at least an outer portion and an inner portion. The outer portion is anodized and the inner portion is unanodized. In addition, to provide predetermined marking of the electronic device housing, a surface of the inner portion adjacent the outer portion has selectively altered surface regions.
As a housing arrangement, one embodiment of the invention can, for example, include a base metal layer, an additional layer, and sub-surface marking indicia. The additional layer has a first bonding surface and a first exterior surface. The first bonding surface is bonded to a first surface of the base metal layer, and the first exterior surface serves as an exterior of the housing arrangement. The sub-surface marking indicia are formed on the first surface of the base metal layer.
Other aspects and advantages of the invention will become apparent from the following detailed description taken in conjunction with the accompanying drawings which illustrate, by way of example, the principles of the invention.
The invention will be readily understood by the following detailed description in conjunction with the accompanying drawings, wherein like reference numerals designate like structural elements, and in which:
The invention pertains to techniques or processes for providing markings on products. In one embodiment, the products have housings and the markings are to be provided on sub-surfaces of the housings. For example, a housing for a particular product can include an outer housing surface and the markings can be provided on a sub-surface the outer housing surface yet still be visible from the outside of the housing. Since the markings are beneath the surface of the housing, the markings are durable. The markings provided on products can be textual and/or graphic. The markings can be formed with high resolution. The markings are also able to be dark, even on metal surfaces.
In general, the markings (also referred to as annotations or labeling) provided on products according to the invention can be textual and/or graphic. The markings can be used to provide a product (e.g., a product's housing) with certain information. The marking can, for example, be use to label the product with various information. When a marking includes text, the text can provide information concerning the product (e.g., electronic device). For example, the text can include one or more of: name of product, trademark or copyright information, design location, assembly location, model number, serial number, license number, agency approvals, standards compliance, electronic codes, memory of device, and the like). When a marking includes a graphic, the graphic can pertain to a logo, a certification mark, standards mark or an approval mark that is often associated with the product. The marking can be used for advertisements to be provided on products. The markings can also be used for customization (e.g., user customization) of a housing of a product.
Exemplary embodiments of the invention are discussed below with reference to
The marking state machine 100 includes a substrate formation state 102. At the substrate formation state 102, a substrate can be obtained or produced. For example, the substrate can represent at least a portion of a housing surface of an electronic device. Next, the marking state machine 100 can transition to a protective surface state 104. At the protective surface state 104, a protective surface can be formed or applied to at least one surface of the substrate. The protective surface can be used to protect the surface of the substrate. For example, the protective surface can be a more durable surface than that of the surface. Next, the marking state machine 100 can transition to a sub-surface marking state 106. At the sub-surface marking state 106, marking can be produced on a sub-surface of the substrate. In particular, the sub-surface marking can be performed on the substrate below the protective surface. The protective surface is typically substantially translucent to allow the sub-surface marking to be visible through the protective surface. The marking can be provided with high resolution and can be protected. Since the marking is provided on a sub-surface, the marking is not only protected but also has the cosmetic advantage of not being perceptible of tactile detection on the surface.
The substrate 200 can represent at least a portion of a housing of an electronic device. The marking being provided to the substrate can provide text and/or graphics to an outer housing surface of a portable electronic device. The marking techniques are particularly useful for smaller scale portable electronic devices, such as handheld electronic devices. Examples of handheld electronic devices include mobile telephones (e.g., cell phones), Personal Digital Assistants (PDAs), portable media players, remote controllers, pointing devices (e.g., computer mouse), game controllers, etc.
The marking is, in one embodiment, particularly well-suited for applying text and/or graphics to a housing of an electronic device. As noted above, the substrate can represent a portion of a housing of an electronic device. Examples of electronic devices, namely, handheld electronic devices, include mobile telephones (e.g., cell phones), Personal Digital Assistants (PDAs), portable media players, remote controllers, pointing devices (e.g., computer mouse), game controllers, etc.
The marking process 300 can provide 302 a metal structure for an article to be marked. The metal structure can pertain to a metal housing for an electronic device, such as a portable electronic device, to be marked. The metal structure can be formed of one metal layer. The metal structure can also be formed of multiple layers of different materials, where at least one of the multiple layers is a metal layer. The metal layer can, for example, be or include aluminum, titanium, niobium or tantalum.
After the metal structure has been provided 302, a surface of the metal structure can be anodized 304. Typically, the surface of the metal structure to be anodized 304 is an outer or exposed metal surface of the metal structure. The outer or exposed surface typically represents an exterior surface of the metal housing for the electronic device. Thereafter, surface characteristics of selected portions of an inner unanodized surface of the metal structure can be altered 306. The inner unanodized surface can be part of the metal layer that was anodized, or part of another layer that was not anodized. The surface characteristics can be altered 306 using a laser, such as an infrared wavelength laser (e.g., picosecond pulsewidth infrared laser). For example, one specific suitable laser is a six (6) Watt infrared wavelength picosecond pulsewidth laser at 1000 KHz with a scan speed of 50 mm/sec. Following the block 306, the marking process 300 can end.
The marking process 600 can obtain 602 a substrate for a housing arrangement. Here, it is assumed that the electronic product to be marked includes a housing and that such housing is to be marked. After the substrate for the housing arrangement has been obtained 602, a laminate material can be adhered 604 to a surface of the substrate. In this embodiment, the laminate material is adhered 604 to the surface of the substrate to provide strength, cosmetic appeal, etc. For example, if the substrate is a metal, such as stainless steel, then the laminate layer can pertain to aluminum) or other material capable of being anodized).
Next, portions of the substrate can be masked 606. Here, since the substrate is going to undergo an anodization process, those portions of the substrate that are not to be anodized can be masked 606. Masking prevents an anodization to certain surfaces of the substrate or the laminate material adhered to the substrate. After portions of the substrate or laminate material are masked, the laminate material (that is not been masked off) can be anodized 608. Following the anodization, the mask can be removed 610.
Thereafter, laser output from a laser can be directed 612 to selected portions of the substrate beneath the anodized laminate material, thereby marking of the substrate. Consequently, the marking is provided by the altered regions that are below the surface. These altered regions can be induced by the laser output on the surface of the substrate below the laminate material. Following the block 612, the marking process 600 can end since the laser serves to produce altered regions below the outer surface of the laminate material.
The substrate 802 with the layer of material 804 can be provided to a masking process. At the masking process, portions of the substrate 802 can be “masked off” with mask material 806 that blocks anodization. The masking process generally does not mask off regions of the layer of material 804 but in some circumstances it may be desirable to do so.
After the masking has been completed at the masking process, the substrate 802 having the layer of material 804 and the mask 806 can be provided to an anodizing process. The anodizing process causes at least a portion of the layer of material 804 to be anodized. An anodized layer of material 804′ is formed by the anodizing process. The anodized layer of material 804′ is typically only anodized part way into the layer of material 804. A boundary 808 is established in the layer of material 804 between the anodized portion and the unanodized portion. The mask material 806 prevents anodization or damage to the substrate 802 during anodization.
Following anodization at the anodizing process, the substrate 802, the anodized layer of material 804′ and the mask material 806 are provided to a de-masking process. At the de-masking process, the mask material 806 that was previously applied can now be removed since the anodization has been completed. Hence, following de-masking, the substrate 802 and the anodized layer of material 804′ remain.
After the substrate 802 has been masked by the masking process, anodized by the anodizing process and de-masked by the de-masking process, the anodized substrate 802 with the anodized layer of material 804′ can be provided to a marking process. At the marking process, the anodized layer of material 804′ can be further processed to produce altered surfaces 810 at the boundary 808 in the anodized layer of material 804′. The altered surfaces 810 are thus below the surface of the anodized layer of material 804′. That is, in one embodiment, the altered surfaces 810 are induced into the unanodized portion of the layer of material 804′ (i.e., portion below the boundary 808) as shown in
The strength associated with stainless steel is generally desirable in the formation of housing walls for portable electronic devices including, but not limited to including, mobile phones (e.g., cell phones), portable digital assistants and digital media players. The stiffness associated with stainless steel is also desirable. However, the cosmetic properties of stainless steel are often lacking. To provide a cosmetic surface for a housing that effectively derives its strength from a stainless steel layer, an anodizable material may be clad to at least one surface of the stainless steel layer and then anodized. In one embodiment, a housing may include a stainless steel core that is substantially sandwiched between two layers of anodized material, e.g., anodized aluminum, which have a relatively high bond strength. The layers of anodized material effectively form cosmetic surfaces for the housing, while the stainless steel core provides structural strength, as well as stiffness, for the housing.
Following the laminating process, the substrate 902 with the layer of material 904 can be provided to a masking process. At the masking process, portions of the substrate 902 can be “masked off” with mask material 906 that blocks anodization. The masking process generally does not mask off regions of the layer of material 904 but in some circumstances it may be desirable to do so.
After the masking has been completed at the masking process, the substrate 902 having the layer of material 904 and the mask 906 can be provided to an anodizing process. The anodizing process causes at least a portion of the layer of material 904 to be anodized. An anodized layer of material 904′ is formed by the anodizing process. The anodized layer of material 904′ may be anodized fully or part way into the layer of material 904. The mask material 906 prevents anodization or damage to the substrate 802 during anodization.
Following anodization at the anodizing process, the substrate 902, the anodized layer of material 904′ and the mask material 906 are provided to a de-masking process. At the de-masking process, the mask material 806 that was previously applied can now be removed since the anodization has been completed. Hence, following de-masking, the substrate 902 and the anodized layer of material 904′ remain.
After the substrate 902 has been masked by the masking process, anodized by the anodizing process and de-masked by the de-masking process, the anodized substrate 902 with the anodized layer of material 904′ can be provided to a marking process. At the marking process, the anodized layer of material 904′ can be further processed to produce altered surfaces 910 on the surface of the substrate 902 below the anodized layer of material 904′. The altered surfaces 910 are thus below the surface of the anodized layer of material 904′. That is, in one embodiment, the altered surfaces 910 are induced into the surface of the substrate 902 beneath at least the anodized portion of the layer of material 904′. The altered surfaces 910 provide the marking to the substrate 902. By controlling size, placement and/or darkness of the altered surfaces 910, the marking can be selectively provided to the article that uses the substrate 902.
As described above, a substrate to be marked may included areas of exposed stainless steel, or areas in which stainless steel is not substantially covered by a laminant material. Such areas are generally masked prior to an anodizing process to protect the areas of exposed stainless steel from oxidizing or rusting. In one embodiment, an edge of a housing formed from a metal substrate having a laminant material may be masked with a masking material such that substantially only the laminant material, as for example aluminum, is exposed.
The marking processes described herein are, for example, suitable for applying text or graphics to a housing surface (e.g., an outer housing surface) of an electronic device. The marking processes are, in one embodiment, particularly well-suited for applying text and/or graphics to an outer housing surface of a portable electronic device. Examples of portable electronic devices include mobile telephones (e.g., cell phones), Personal Digital Assistants (PDAs), portable media players, remote controllers, pointing devices (e.g., computer mouse), game controllers, etc. The portable electronic device can further be a hand-held electronic device. The term hand-held generally means that the electronic device has a form factor that is small enough to be comfortably held in one hand. A hand-held electronic device may be directed at one-handed operation or two-handed operation. In one-handed operation, a single hand is used to both support the device as well as to perform operations with the user interface during use. In two-handed operation, one hand is used to support the device while the other hand performs operations with a user interface during use or alternatively both hands support the device as well as perform operations during use. In some cases, the hand-held electronic device is sized for placement into a pocket of the user. By being pocket-sized, the user does not have to directly carry the device and therefore the device can be taken almost anywhere the user travels (e.g., the user is not limited by carrying a large, bulky and often heavy device).
Additional information on product marking as well as other manufacturing techniques and systems for electronic devices are contained in U.S. Provisional Patent Application No. 61/059,789, filed Jun. 8, 2008, and entitled “Methods and Systems for Manufacturing an Electronic Device,” which is hereby incorporated herein by reference.
This application is also references: (i) U.S. Provisional Patent Application No. 61/121,491, filed Dec. 10, 2008, and entitled “Techniques for Marking Product Housings,” which is hereby incorporated herein by reference; (ii) U.S. patent application Ser. No. 12/358,647, filed Jan. 23, 2009, and entitled “Method and Apparatus for Forming a Layered Metal Structure with an Anodized Surface,” which is hereby incorporated herein by reference; and (iii) U.S. patent application Ser. No. 12/475,597, filed May 31, 2009, and entitled “Techniques for Marking Product Housings,” which is hereby incorporated herein by reference.
The various aspects, features, embodiments or implementations of the invention described above can be used alone or in various combinations.
Different aspects, embodiments or implementations may, but need not, yield one or more of the following advantages. One advantage of the invention is that durable, high precision markings can be provided to product housings. As an example, the markings being provided on a sub-surface of a product housing that not only have high resolution and durability but also provide a smooth and high quality appearance. Another advantage is that the marking techniques are effective for surfaces that are flat or curved.
The many features and advantages of the present invention are apparent from the written description. Further, since numerous modifications and changes will readily occur to those skilled in the art, the invention should not be limited to the exact construction and operation as illustrated and described. Hence, all suitable modifications and equivalents may be resorted to as falling within the scope of the invention.
This application claims priority benefit of U.S. Provisional Application No. 61/252,623, filed Oct. 16, 2009 and entitled “SUB-SURFACE MARKING OF PRODUCT HOUSINGS,” which is hereby incorporated herein by reference.
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Number | Date | Country | |
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20110088924 A1 | Apr 2011 | US |
Number | Date | Country | |
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61252623 | Oct 2009 | US |