WO2012177563A2 - Durabilité améliorée à l'impact pour du verre par application de films minces - Google Patents

Durabilité améliorée à l'impact pour du verre par application de films minces Download PDF

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Publication number
WO2012177563A2
WO2012177563A2 PCT/US2012/043007 US2012043007W WO2012177563A2 WO 2012177563 A2 WO2012177563 A2 WO 2012177563A2 US 2012043007 W US2012043007 W US 2012043007W WO 2012177563 A2 WO2012177563 A2 WO 2012177563A2
Authority
WO
WIPO (PCT)
Prior art keywords
coating
recited
glass article
electronic device
glass
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2012/043007
Other languages
English (en)
Other versions
WO2012177563A3 (fr
Inventor
Anna-Katrina Shedletsky
Christopher Prest
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Apple Inc
Original Assignee
Apple Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US13/168,821 external-priority patent/US20120327568A1/en
Priority claimed from US13/168,816 external-priority patent/US8715779B2/en
Application filed by Apple Inc filed Critical Apple Inc
Publication of WO2012177563A2 publication Critical patent/WO2012177563A2/fr
Anticipated expiration legal-status Critical
Publication of WO2012177563A3 publication Critical patent/WO2012177563A3/fr
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C21/00—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface
    • C03C21/001—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions
    • C03C21/002—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions to perform ion-exchange between alkali ions
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
    • C03C17/3411—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions with at least two coatings of inorganic materials
    • C03C17/3417—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions with at least two coatings of inorganic materials all coatings being oxide coatings
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
    • C03C17/42—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating of an organic material and at least one non-metal coating
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1601—Constructional details related to the housing of computer displays, e.g. of CRT monitors, of flat displays
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/18—Packaging or power distribution
    • G06F1/181—Enclosures
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2217/00—Coatings on glass
    • C03C2217/70—Properties of coatings
    • C03C2217/76—Hydrophobic and oleophobic coatings
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2217/00—Coatings on glass
    • C03C2217/70—Properties of coatings
    • C03C2217/78—Coatings specially designed to be durable, e.g. scratch-resistant
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2200/00—Indexing scheme relating to G06F1/04 - G06F1/32
    • G06F2200/16—Indexing scheme relating to G06F1/16 - G06F1/18
    • G06F2200/161—Indexing scheme relating to constructional details of the monitor
    • G06F2200/1612—Flat panel monitor

Definitions

  • a glass part can be provided as part of a housing or display, such a glass part can be referred to as a cover glass.
  • the transparent and scratch-resistance characteristics of glass make it well suited for such applications.
  • glass parts can be provided to support display technology. More particularly, for supporting an electronic display, a portable electronic device can provide a display technology layer beneath an outer cover glass. A sensing arrangement can also be provided with or adjacent the display technology layer.
  • the display technology layer may include or pertain to a Liquid Crystal Display (LCD) that includes a Liquid Crystal Module (LCM).
  • LCD Liquid Crystal Display
  • LCD Liquid Crystal Module
  • the LCM generally includes an upper glass sheet and a lower glass sheet that sandwich a liquid crystal layer therebetween.
  • the sensing arrangement may be a touch sensing arrangement such as those used to create a touch screen.
  • a capacitive sensing touch screen can include substantially transparent sensing points or nodes dispersed about a sheet of glass.
  • the invention relates generally to techniques for improving
  • the coatings are typically thin coatings, such as thin film coatings.
  • the coatings can serve to increase strength of the glass components and/or provide durable user interfacing surfaces. Accordingly, glass articles that have received coatings are able to be not only thin but also sufficiently strong so as to resist damage from impact events better than uncoated glass.
  • the coated glass articles are well suited for use in consumer products, such as consumer electronic devices (e.g., electronic devices).
  • Embodiments of the invention can pertain to improved housings for electronic devices that include a glass component that has been protected and/or strengthened through application of one or more coatings to the glass
  • the coatings can be thin film coatings.
  • the use of multiple distinct coatings can provide improved characteristics of the glass component.
  • the distinct coatings can be provided over separate portions or over one another (i.e., layered).
  • a first coating can strengthen a glass member for an electronic device housing.
  • a second coating can provide a protective coating over at least a portion of the first coating.
  • the first coating can be an atomic level coating (e.g., atomic layer deposition), and the second coating can provide a durable, hard surface that is substantially scratch resistant.
  • atomic level coating e.g., atomic layer deposition
  • an electronic device housing can be provided with a glass article (or glass component) that has an atomic level coating that improves strength of the glass article.
  • a hard protective coating can be provided over at least a portion of the atomic level coating of the glass article to provide a durable surface. The coatings can be applied to selected portions of the glass article if desired.
  • a coating can strengthen a glass member for an electronic device housing.
  • the first coating can be an amorphous carbon coating that serves to strengthen a glass member for an electronic device housing and/or provide a durable surface. The amorphous carbon coating is normally not applied over portions of the glass article that are to remain (such as a touch screen or visual display area).
  • An additional coating can be provided over at least a portion of the amorphous carbon coating and/or over the glass member where there is no amorphous carbon coating.
  • an electronic device housing can be provided with a glass article that has a hard protective coating that improves durability and strength of the glass article.
  • the hard protective coating is a coating of amorphous carbon coating applied to selected portions of the glass article.
  • an electronic device housing can be provided with a glass article that uses a combination of coatings to achieve the desired characteristics.
  • the combination of coatings includes at least one soft coating and at least one hard coating. The soft coating facilitates impact protection, while the hard coating facilitates durability and strength. The coatings can be applied to selected portions of the glass article if desired.
  • the invention can be implemented in numerous ways, including as a method, system, device, or apparatus. Several embodiments of the invention are discussed below.
  • one embodiment can, for example, include at least a housing that includes a glass member providing a user facing outer surface for a portion of the housing. At least a portion of the glass member is provided with an atomic level coating. The portion of the glass member that is provided with the atomic level coating can include at least the user facing outer surface.
  • another embodiment can, for example, include at least a housing that includes a cover glass providing at least a portion of an outer surface of the housing. At least a portion of the cover glass is provided with an atomic level coating.
  • one embodiment can, for example, include at least the operations of: obtaining a glass article, depositing an atomic level coating on a least a portion of a surface of the glass article using an atomic layer deposition, and applying an outer coating over at least a portion of the atomic level coating.
  • the glass article can be installed to or with the electronic device housing.
  • one embodiment can, for example, include at least a housing that includes a glass member providing a user facing outer surface for a portion of the housing. At least a portion of the glass member can be provided over a display device that is provided within the housing. At least a portion of the glass member is provided with an amorphous carbon coating. The portion of the glass member that is provided with the amorphous carbon coating does not include the portion of the glass member provided over the display device provided within the housing.
  • one embodiment can, for example, include at least the operations of: obtaining a glass article, depositing a coating of amorphous carbon on a least a portion of a surface of the glass article, and installing the glass article to or with the electronic device housing.
  • one embodiment can, for example, include at least the operations of: obtaining a glass article, depositing a thin coating of amorphous carbon on a least a portion of a surface of the glass article, applying an outer thin coating over at least a portion of the thin coating of amorphous carbon, and installing the glass article to or with the electronic device housing.
  • another embodiment can, for example, include at least the operations of: obtaining a glass article, applying a soft inner coating on a least a portion of a surface of the glass article, and applying a hard outer coating on a least a portion of the surface of the glass article or the soft inner coating of the glass article.
  • FIG. 1 is a flow diagram of a housing assembly process according to one embodiment.
  • FIGs. 2A-2D illustrate processing and assembly of a portion of an electronic device housing.
  • FIGs. 3A-3C illustrate processing of a surface of a glass article according to one embodiment.
  • FIG. 4 is a flow diagram of a housing assembly process according to another embodiment.
  • FIG. 5 is a flow diagram of a housing assembly process according to another embodiment.
  • FIG. 6 is a flow diagram of a housing assembly process according to another embodiment.
  • FIGs. 7A-7C illustrate processing of coating a glass article that forms a portion of an electronic device housing.
  • FIGs. 7D-7F illustrate processing of coating a glass article with an amorphous carbon coating.
  • FIG. 8 is a flow diagram of a housing assembly process according to another embodiment.
  • FIGs. 9A and 9B are diagrammatic representations of electronic device according to one embodiment.
  • FIGs. 10A and 10B are diagrammatic representations of electronic device according to another embodiment of the invention. DETAILED DESCRIPTION OF EMBODIMENTS OF THE INVENTION
  • Electronic devices can include housings that include glass components.
  • some portable electronic devices use outer glass covers, such as for a front surface of the housings.
  • outer glass covers are translucent and provided over an electronic display (e.g., LCD display).
  • an electronic display e.g., LCD display.
  • glass components can break under impact forces.
  • durability and/or strength of glass components to further improve their ability to avoid breakage when subjected to impact forces.
  • the invention relates generally to techniques for improving
  • the coatings are typically thin coating, such as thin film coatings.
  • the coatings can serve to increase strength of the glass components and/or durability of user interfacing surfaces.
  • the glass components are suitable for use with electronic devices.
  • Embodiments of the invention can relate to apparatus, systems and methods for improving durability and/or strength of a thin glass member for a consumer product, such as a consumer electronic device.
  • the glass member may be an outer surface of a consumer electronic device.
  • the glass member may, for example, correspond to a glass cover that helps form part of a display area of the electronic device (i.e., situated in front of a display either as a separate part or integrated within the display).
  • the glass member may form a part of a housing for the consumer electronic device (e.g., may form an outer surface other than in the display area).
  • the glass member may be an inner component of a consumer electronic device.
  • the glass member can be a
  • the apparatus, systems and methods for improving durability and/or strength of thin glass are especially suitable for glass covers or displays (e.g., LCD displays), particularly those assembled in small form factor electronic devices such as handheld electronic devices (e.g., mobile phones, media players, personal digital assistants, remote controls, etc.).
  • the glass can be thin in these small form factor embodiments, such as having a thickness of less than 3 mm, or more particularly between 0.2 and 1 .5 mm.
  • the apparatus, systems and methods can also be used for glass covers or displays for other devices including, but not limited to including, relatively larger form factor electronic devices (e.g., portable computers, tablet computers, displays, monitors, televisions, etc.).
  • the glass can also be thin in these larger form factor embodiments, such as less than 5 mm, or more particularly between 0.3 and 3 mm.
  • an electronic device housing can be provided with a glass article (or glass component) that has an atomic level coating that improves strength of the glass article.
  • a hard protective coating can be provided over at least a portion of the atomic level coating of the glass article to provide a durable surface. The coatings can be applied to selected portions of the glass article if desired.
  • FIG. 1 is a flow diagram of a housing assembly process 100 according to one embodiment.
  • the housing being assembled can pertain to a housing for an electronic device, such as a portable electronic device.
  • the housing as discussed below, can include one or more glass components that can serve as a portion of the housing.
  • the housing assembly process 100 can obtain 102 a glass article that is to be utilized as part of the housing for an electronic device.
  • the glass article can serve as an outer surface for a portion of the housing.
  • the glass article can be referred to as a cover glass and serve as a front glass cover for the housing.
  • the thickness and size of the glass article varies with
  • the glass article has a thickness less than or equal to 5 (five) mm. In another embodiment, the glass article has a thickness less than or equal to 3 (three) mm. In another embodiment, the glass article has a thickness less than or equal to 1 (one) mm. Also, it should be recognized that the glass article can be pre-processed to chemically strengthen the glass article.
  • the glass article can be processed to improve its strength.
  • an atomic level coating can be deposited 104 on at least a portion of the surface of the glass article.
  • the atomic level coating is transparent (or substantially transparent) and, thus, does not impede the ability to use the glass article as a cover glass for the housing.
  • the atomic level coating is a very thin coating that can be applied to one or more surfaces of the glass article.
  • the atomic level coating is deposited using atomic layer deposition.
  • Atomic layer deposition is a thin film technology that is or is similar to a chemical vapor deposition (CVD) method except that precursors are separated such that deposition is atom-by-atom which is highly conformal.
  • the resulting glass article is more durable and/or stronger in that it is more resistant to breakage due to impact forces, such as sharp, blunt or edge impacts.
  • the atomic level coating can, for example, be formed of at least one of AI 2 O 3 , AlSiO, TIO 2 or SiO 2 .
  • an outer coating can be applied 106 over at least a portion of the atomic level coating. While the atomic level coating can substantially improve the strength of the glass article, the atomic level coating may not be sufficiently scratch resistant for use as a user interfacing surface. Hence, the outer coating applied 106 over the atomic level coating can serve to provide a protective barrier that is substantially scratch resistant such that the processed glass article can be utilized as a user interfacing surface.
  • the outer coating is also transparent (or substantially transparent) so that is does not impede the ability to use the glass article as a cover glass for the housing.
  • the outer coating can be formed of at least one of SiO 2 and SiN.
  • the outer coating can be an oleophobic coating.
  • the outer coating is thin and applied through deposition or spray techniques. In one embodiment, the outer coating has a thickness less than or equal to 0.1 mm.
  • the processed glass article with the atomic level coating and the outer coating can be installed 108 on or within the housing for the electronic device.
  • the processed glass article is suitable for use as a user interfacing surface of the housing.
  • the processed glass article can be used as a cover glass for a front face of a portable electronic device housing.
  • the processed glass article with its coatings is well suited for use as a user interfacing surface, the processed glass article need not be exposed to user interactions but instead can be provided internal to the housing.
  • the housing assembly process 100 can end.
  • the outer coating may or may not be translucent. In such case, the coating may only be provided onto surfaces through which translucency is not needed, such as non-user interfacing surfaces.
  • the outer coating could be an amorphous carbon coating.
  • the amorphous carbon coating can be a coating of amorphous carbon with diamond like properties.
  • a coating of amorphous carbon with diamond like properties refers to diamond-like coating which is hard and offers very good wear resistance.
  • FIGs. 2A-2D illustrate processing and assembly of a portion of an electronic device housing. In one embodiment, the processing and assembly depicted in FIGs. 2A-2D can perform the housing assembly process 100 illustrated in FIG. 1 .
  • FIG. 2A illustrates a glass article 200 according to one embodiment.
  • the glass article 200 is typically a thin sheet of glass. Typically, the glass article 200 will have a thickness of less than 3 mm and in many cases less than 1 mm.
  • the glass article 200 has an outer exposed surface 202 that can be referred to as a user interfacing surface.
  • the outer exposed surface 202 is thus an exposed surface of the electronic device housing that a user can interface with to interact with the associated electronic device.
  • the user can touch the outer exposed surface 202 while providing touch inputs to the associated electronic device, or the user can view (through the glass article 200) visual outputs from a display device of the associated electronic device mounted behind the glass article 200.
  • FIG. 2B illustrates the glass article 200 illustrated in FIG. 2A after an atomic level coating 204 has been applied.
  • the atomic level coating 204 is provided on all sides of the glass article 200. More particularly, the glass article 200 includes not only the exposed outer surface 202 but also a bottom surface 206 and side surfaces 208, 210, and the atomic level coating 204 can be applied to the outer exposed surface 202, the bottom surface 206 and the side surfaces 208, 210. However, in other embodiments, the atomic level coating 204 can be applied to less than all of the surfaces of the glass article 200, such as to just the outer exposed surface 202 of the glass article 200.
  • a protective coating 212 can be applied to at least the exposed outer surface 202 of the glass article 200.
  • FIG. 2C illustrates the glass article 200 with the atomic level coating 204 as well as with the protective coating 212 applied over the exposed outer surface 202.
  • the protective coating 212 provides a hard, scratch resistant surface for the exposed outer surface 202 of the glass article. It should be understood that the protective coating 212 could also be applied to the bottom surface 206 and/or one or both of the side surfaces 208, 210.
  • FIG. 2D illustrates the processed glass article 200 shown in FIG. 2C being assembled with the electronic device housing.
  • the electronic device housing includes one or more support structures 214 that forms part of the electronic device housing.
  • the processed glass article 200 (including its atomic level coating 204 and protective coating 212) can be assembled to the electronic device housing such that the glass article 200 is positioned and secured to the electronic device housing proximate to the one or more support structures 214.
  • the exposed outer surface 202 remains exposed even after assembly with the electronic device housing.
  • the glass article 200 can, however, be provided essentially flush with other portions (e.g., surrounding portions) of the electronic device housing.
  • the glass article 200 can also be recessed or can be extending outward (i.e., proud) with respect to the electronic display housing.
  • the materials utilized for the processed glass article can vary with implementation.
  • the glass for the glass article 200 can, for example, be alumina silicate glass or soda lime glass.
  • the atomic level coating 204 can, for example, be formed of at least one of AI 2 O 3 , AlSiO, TiO 2 and SiO 2 .
  • the protective coating can be formed of at least one of SiO 2 and SiN, or can be an oleophobic coating.
  • FIGs. 3A-3C illustrate processing of a surface of a glass article according to one embodiment.
  • the glass article can, for example, represent the glass article illustrated in FIGs. 2A-2D or the glass article used with the housing assembly process 100 illustrated in FIG. 1 . More specifically, FIGs. 3A-3C can provide magnified illustrations of a section of a surface of a glass article.
  • the glass article may or many not have undergone polishing.
  • the surface of the glass article can represent a user exposed surface of the glass article that forms an outer portion of an electronic device housing.
  • FIG. 3A illustrates a magnified view of a glass article 300 having micro- flaws 302 in an exposed surface.
  • These micro-flaws 302 are very small and thus without magnification would not be visible to a human. Nevertheless, the micro- flaws 302 are micro-defects in the exposed surface can weaken the strength of the glass article 300.
  • the micro-flaws 302 can be caused during forming or processing the glass. As an example, the micro-flaws 302 can be caused by polishing the glass article 300 which is often done after cutting operations.
  • the micro-flaws 302 can also be referred to as "Griffith Flaws".
  • the micro-flaws 302 can be due to cut edges (e.g., sides) or larger polished surfaces.
  • FIG. 3B illustrates a magnified view of the glass article 300 illustrated in FIG. 3A after an atomic level coating 304 has been applied.
  • the atomic level coating 304 is provided on the exposed surface of the glass article 300. Since the atomic level coating 304 is very thin, it is able to at least partially fill into the micro-flaws 302 in the exposed surface. As a result, the micro-defects in the glass article 300 due to the micro-flaws 302 are rendered less susceptible to further cracking. Consequently, the exposed surface of the glass article 300, and thus the glass article 300 as a whole, can become stronger.
  • FIG. 3C illustrates a magnified view of the glass article 300 with the atomic level coating 304 illustrated in FIG. 3B after a protective coating 306 has been applied.
  • the protective coating 306 is applied over the atomic level coating 304.
  • the protective coating 306 provides a hard, scratch resistant surface for the exposed surface of the glass article.
  • the exposed surface of the glass article 300 remains exposed even after assembly with an electronic device housing (sometimes even its edges remain exposed.
  • the atomic level coating 304 is highly conformal and can operate to increase the radius of micro-flaws which can in turn reduce stress concentrations due to the micro-flaws.
  • FIG. 4 is a flow diagram of a housing assembly process 400 according to another embodiment.
  • the housing being assembled can pertain to a housing for an electronic device, such as a portable electronic device.
  • the housing can include one or more glass components that can serve as a portion of the housing.
  • the housing assembly process 400 can obtain 402 a glass article that is to be utilized as part of the housing for an electronic device.
  • the glass article can serve as an outer surface for a portion of the housing.
  • the glass article can be referred to as a cover glass and serve as a front glass cover for the housing.
  • the thickness and size of the glass article varies with
  • the glass article has a thickness less than or equal to 5 (five) mm. In another embodiment, the glass article has a thickness less than or equal to 3 (three) mm. In another embodiment, the glass article has a thickness less than or equal to 1 (one) mm. Also, it should be recognized that the glass article can be pre-processed to chemically strengthen the glass article.
  • the glass article can be processed to improve its strength.
  • an atomic level coating can be deposited 404 on at least a portion of the surface of the glass article.
  • the atomic level coating is transparent (or substantially transparent) and, thus, does not impede the ability to use the glass article as a cover glass for the housing.
  • the atomic level coating is a very thin coating that can be applied to one or more surfaces of the glass article.
  • the atomic level coating is deposited using atomic layer deposition.
  • Atomic layer deposition is a thin film technology that is or is similar to a chemical vapor deposition (CVD) method.
  • the resulting glass article is more durable and/or stronger in that it is more resistant to breakage due to impact forces, such as sharp, blunt or edge impacts.
  • the atomic level coating can, for example, be formed of at least one of AI 2 O 3 and AlSiO.
  • a hard outer coating can be applied 406 over at least a portion of the atomic level coating. While the atomic level coating can substantially improve the strength of the glass article, the atomic level coating may not be sufficiently scratch resistant for use as a user interfacing surface. Hence, the hard outer coating applied 406 over the atomic level coating can serve to provide a protective barrier that is substantially scratch resistant such that the processed glass article can be utilized as a user interfacing surface.
  • the hard outer coating is also transparent (or substantially transparent) so that is does not impede the ability to use the glass article as a cover glass for the housing.
  • the hard outer coating can be formed of at least one of SiO 2 and SiN.
  • the hard outer coating can be an oleophobic coating.
  • the hard outer coating is thin and applied through deposition or spray techniques. In one embodiment, the outer coating has a thickness less than or equal to 0.1 mm.
  • the housing assembly process 400 can also apply 408 a soft edge coating to at least an edge portion of the glass article.
  • the soft edge coating can be formed by a soft material, such as epoxy, silicone or various polymers, to the edge portion. In one embodiment, the thickness of the soft edge coating can be about 25-100 micrometers.
  • the soft edge coating at the edge portion can serve to protect the edge portion from impact events, such as due to a user dropping the housing for the electronic device.
  • the soft edge coating can be applied 408 to the edge portion by injection molding or other techniques.
  • the processed glass article with the atomic level coating and the hard outer coating and the soft edge coating can be installed 410 on or within the housing for the electronic device.
  • the processed glass article is suitable for use as a user interfacing surface of the housing.
  • the processed glass article can be used as a cover glass for a front face of a portable electronic device housing.
  • the processed glass article with its coatings is well suited for use as a user interfacing surface, the processed glass article need not be exposed to user interactions but instead can be provided internal to the housing.
  • the housing assembly process 400 can end.
  • the outer coating may or may not be translucent. In such case, the coating may only be provided onto surfaces through which translucency is not needed, such as non-user interfacing surfaces (e.g., edges of glass article or non-active areas of display/touch screen).
  • the outer coating could be an amorphous carbon coating.
  • the amorphous carbon coating can be a coating of amorphous carbon with diamond like properties.
  • the hard outer coating can be deposited on at least a portion of the surface of the glass article. That is, the hard outer coating can, in general, be deposition directly onto the surface of the glass article without any intermediate layers in between or there can be one or more layers between the hard outer coating and the surface of the glass.
  • Different portions of the glass article can have one or more different layers of coatings applied thereto.
  • an electronic device housing can be provided with a glass article that has a hard protective coating that improves durability and strength of the glass article.
  • the hard protective coating is a coating of amorphous carbon coating applied to selected portions of the glass article.
  • FIG. 5 is a flow diagram of a housing assembly process 500 according to another embodiment.
  • the housing being assembled can pertain to a housing for an electronic device, such as a portable electronic device.
  • the housing as discussed below, can include one or more glass components that can serve as a portion of the housing.
  • the housing assembly process 500 can obtain 502 a glass article that is to be utilized as part of the housing for an electronic device.
  • the glass article can serve as an outer surface for a portion of the housing.
  • the glass article can be referred to as a cover glass and serve as a front glass cover for the housing.
  • the thickness and size of the glass article varies with
  • the glass article has a thickness less than or equal to 5 (five) mm. In another embodiment, the glass article has a thickness less than or equal to 3 (three) mm. In another embodiment, the glass article has a thickness less than or equal to 1 (one) mm. Also, it should be recognized that the glass article can be pre-processed to chemically strengthen the glass article.
  • the glass article can be processed to improve its strength.
  • an amorphous carbon coating can be deposited 504 on a portion of the surface of the glass article.
  • the amorphous carbon coating is a thin coating (e.g., thin film) that can be applied to one or more surfaces of the glass article.
  • the amorphous carbon is a hard coating that can be said to have diamond like properties.
  • the amorphous carbon coating is not transparent (or substantially not transparent) and, thus, does impede the ability to use the glass article as a transparent cover glass for the housing. However, the amorphous carbon coating can be selectively deposited 504 to those portions of the surface of the glass article that are able to opaque.
  • a peripheral portion of the glass article might be coated with amorphous carbon, while a central portion might not be coating with amorphous carbon so that it remain transparent and thus suitable for use as a user interfacing surface.
  • the amorphous carbon coating can be deposited 504 using a plasma-assisted Physical Vapor Deposition (PVD) process.
  • PVD Physical Vapor Deposition
  • a masking operation can facilitate selectively depositing 504 of the amorphous carbon coating to certain portions of the glass article.
  • the processed glass article with the amorphous carbon coating can be installed 506 on or within the housing for the electronic device.
  • the processed glass article can remain suitable for use as a user interfacing surface of the housing.
  • the processed glass article can be used as a cover glass for a front face of a portable electronic device housing.
  • the central portion of the cover glass would not include an amorphous carbon coating.
  • the peripheral portion is strengthened by an amorphous carbon coating, but the central portion is not coated with amorphous carbon and thus remains
  • the processed glass article with its coatings can be well suited for use as a user interfacing surface, the processed glass article need not be exposed to user interactions but instead can be provided internal to the housing. After the glass article has been installed 506, the housing assembly process 500 can end.
  • FIG. 6 is a flow diagram of a housing assembly process 600 according to another embodiment.
  • the housing being assembled can pertain to a housing for an electronic device, such as a portable electronic device.
  • the housing as discussed below, can include one or more glass components that can serve as a portion of the housing.
  • the housing assembly process 600 can obtain 602 a glass article that is to be utilized as part of the housing for an electronic device.
  • the glass article can serve as an outer surface for a portion of the housing.
  • the glass article can be referred to as a cover glass and serve as a front glass cover for the housing.
  • the thickness and size of the glass article varies with
  • the glass article has a thickness less than or equal to 5 (five) mm. In another embodiment, the glass article has a thickness less than or equal to 3 (three) mm. In another embodiment, the glass article has a thickness less than or equal to 1 (one) mm. Also, it should be recognized that the glass article can be pre-processed to chemically strengthen the glass article.
  • the glass article can be processed to improve its strength.
  • an amorphous carbon coating can be deposited 604 on a portion of the surface of the glass article.
  • the amorphous carbon coating is a thin coating (e.g., thin film) that can be applied to one or more surfaces of the glass article.
  • the amorphous carbon is a hard coating that can be said to have diamond like properties.
  • the amorphous carbon coating is not transparent (or substantially not transparent) and, thus, does impede the ability to use the glass article as a transparent cover glass for the housing. However, the amorphous carbon coating can be selectively deposited 604 to those portions of the surface of the glass article that are able to opaque.
  • a peripheral portion of the glass article might be coated with amorphous carbon, while a central portion might not be coating with amorphous carbon so that it remain transparent and thus suitable for use as a user interfacing surface.
  • the amorphous carbon coating can be deposited 604 using a plasma-assisted Physical Vapor Deposition (PVD) process.
  • PVD Physical Vapor Deposition
  • a masking operation can facilitate selectively depositing 604 of the amorphous carbon coating to certain portions of the glass article.
  • the resulting glass article is more durable and/or stronger. In areas where the glass article has the amorphous carbon coating, the resulting glass article is
  • an outer coating can be applied 606 over at least a portion of the amorphous carbon coating. While the amorphous carbon can substantially improve the strength of the glass article, the amorphous carbon coating may not provide desired characteristics for use as a user interfacing surface. Hence, the outer coating applied 606 over the amorphous carbon coating can serve to provide a protective barrier that is substantially smudge resistant such that the processed glass article can be utilized as a user interfacing surface.
  • the outer coating is also
  • the outer coating can be an oleophobic coating.
  • the outer coating can be formed of another material, such as at least one of SiO 2 and SiN.
  • the outer coating is thin and applied through deposition or spray techniques. In one embodiment, the outer coating has a thickness less than or equal to 0.1 mm.
  • the processed glass article with the amorphous carbon coating and the outer coating can be installed 608 on or within the housing for the electronic device.
  • the processed glass article can remain suitable for use as a user interfacing surface of the housing.
  • the processed glass article can be used as a cover glass for a front face of a portable electronic device housing.
  • the central portion of the cover glass would not include an amorphous carbon coating.
  • the peripheral portion is strengthened by an amorphous carbon coating, but the central portion is not coated with amorphous carbon and thus remains transparent.
  • FIGs. 7A-7C illustrate processing of coating a glass article that forms a portion of an electronic device housing.
  • the processing depicted in FIGs. 7A-7C can perform the housing assembly process 600 illustrated in FIG. 6.
  • FIG. 7A illustrates a glass article 700 according to one embodiment.
  • the glass article 700 is typically a thin sheet of glass.
  • the glass for the glass article 700 can, for example, be alumina silicate glass or soda lime glass.
  • the glass article 700 will have a thickness of less than 3 mm and in many cases less than 1 mm.
  • the glass article 700 has an outer exposed surface 702 that can be referred to as a user interfacing surface.
  • the outer exposed surface 702 is thus an exposed surface of the electronic device housing that a user can interface with to interact with the associated electronic device.
  • the user can touch the outer exposed surface 702 while providing touch inputs to the associated electronic device, or the user can view (through the glass article 700) visual outputs from a display device of the associated electronic device mounted behind the glass article 700.
  • FIG. 7B illustrates the glass article 700 illustrated in FIG. 7A after an amorphous carbon coating 704 has been applied.
  • the amorphous carbon coating 704 is provided on a peripheral portion of the glass article 700.
  • the glass article 700 includes not only the exposed outer surface 702 which can pertain to a top surface 706, but also a bottom surface 708 and side surfaces 710, 712.
  • a central portion 714 of the top surface 706 and the bottom surface 708 of the glass article 700 do not receive the amorphous carbon coating 704 and thus remain transparent.
  • the central portion includes all of the top surface 706 and the bottom surface 708 except the peripheral portion which extends inward from edge a distance (e.g., about 1 - 25 mm) depending on implementation.
  • any portion of the top surface 706 and the bottom surface 708 that need not be translucent can receive the amorphous carbon coating 704.
  • an outer coating 716 can be applied to at least the exposed outer surface 702 (or top surface 706) of the glass article 700.
  • FIG. 7C illustrates the glass article 700 with the amorphous carbon coating 704 as well as with the outer coating 716 applied over some or all of the exposed outer surface 702.
  • the outer coating 716 provides desired characteristics to the exposed outer surface 702 of the glass article 700.
  • the outer coating 716 can be an anti-smudge coating, such as an oleophobic coating. It should be understood that the outer coating 716 could also be applied to the bottom surface 708 and/or one or both of the side surfaces 710, 712.
  • FIGs. 7D-7F illustrate processing of coating a glass article with an amorphous carbon coating.
  • the processing depicted in FIGs. 7D-7F can perform the application of the amorphous carbon coating 704 to a portion of the glass article 700 in FIG. 7B.
  • FIG. 7D illustrates the glass article 700 resting on a metal substrate 720.
  • the central portion 714 of the exposed outer surface 702 can be covered by a mask 722.
  • the mask 722 serves to cover the central portion 714 so that no amorphous carbon coating is formed at the central portion 714.
  • the central portion 714 is typically provided over a display device, it should not be coated with an amorphous carbon coating, since the amorphous carbon coating 704 is opaque (i.e., substantially non-transparent).
  • the mask 722 can, for example, be aluminum or copper tape.
  • FIG. 7E illustrates formation of the amorphous carbon coating 704 over the peripheral portion.
  • the amorphous carbon coating 704 can be applied by plasma-assisted physical vapor deposition (PVD) at an elevated temperature of about 130 degrees Celsius.
  • PVD plasma-assisted physical vapor deposition
  • the metal substrate 720 serves to facilitate the bonding of the amorphous carbon to the peripheral portion of the glass article 700 so as to form the amorphous carbon coating 704.
  • the metal substrate 720 can attract the amorphous carbon in the vicinity of the glass article 700, and since the metal substrate 720 is also near the peripheral portion of the glass article 700, the ability to form the amorphous carbon coating 704 on the peripheral portions of the glass article 700 is substantially enhanced.
  • the media substrate 720 could wrap around the sides of the glass article to provide additional metal near the peripheral region.
  • FIG. 7F illustrates the glass article 700 after the amorphous carbon coating 704 has been formed, and after the glass article 700 has been removed from the media substrate 720. In FIG. 7F, the mask 722 has also been removed so as to expose the exposed outer surface 702.
  • an electronic device housing can be provided with a glass article that uses a combination of coatings to achieve the desired characteristics.
  • the combination of coatings includes at least one soft coating and at least one hard coating.
  • the soft coating facilitates impact protection, while the hard coating facilitates durability and strength.
  • the coatings can be applied to selected portions of the glass article if desired.
  • FIG. 8 is a flow diagram of a housing assembly process 800 according to another embodiment.
  • the housing being assembled can pertain to a housing for an electronic device, such as a portable electronic device.
  • the housing can include one or more glass components that can serve as a portion of the housing.
  • the housing assembly process 800 can obtain 802 a glass article that is to be utilized as part of the housing for an electronic device.
  • the glass article can serve as an outer surface for a portion of the housing.
  • the glass article can be referred to as a cover glass and serve as a front glass cover for the housing.
  • the thickness and size of the glass article varies with
  • the glass article has a thickness less than or equal to 5 (five) mm. In another embodiment, the glass article has a thickness less than or equal to 3 (three) mm. In another embodiment, the glass article has a thickness less than or equal to 1 (one) mm. Also, it should be recognized that the glass article can be pre-processed to chemically strengthen the glass article.
  • the glass article can be processed to improve its strength.
  • a soft inner coating can be applied 804 on at least a portion of the surface of the glass article.
  • the soft inner coating if transparent (or substantially transparent), can be applied over a user interfacing surface without impeding the ability to use the glass article as a cover glass for the housing.
  • the soft inner coating can be applied at peripheral portions so that central portions can remain transparent and suitable for user interfacing surfaces.
  • the soft inner coating is a very thin coating that can be applied to one or more surfaces of the glass article.
  • the soft inner coating can, for example, be formed of at least one of epoxy, silicone, copper, or various polymers.
  • the thickness of the soft inner coating can vary with application. In one embodiment, the thickness of the soft inner coating is 5 - 150 micrometers.
  • a hard outer coating can be applied 806 over at least a portion of the soft inner coating. While the soft inner coating can substantially improve the ability of the glass article to endure impact events, the soft inner coating may not be sufficiently durable or otherwise suitable for use as a user interfacing surface. Hence, the hard outer coating applied 806 over the soft inner coating can serve to provide a protective barrier that is durable (e.g., substantially scratch resistant) such that the processed glass article can be utilized as a user interfacing surface.
  • the hard outer coating can also transparent (or substantially transparent) so that is does not impede the ability to use the glass article as a cover glass for the housing. Alternatively, if the hard outer coating is not transparent (or substantially not transparent), the hard outer coating can be applied at peripheral portions so that central portions can remain transparent and suitable for user interfacing surfaces.
  • the hard outer coating can be formed of at least one of SiO 2 , SiNi, SiN. Ni + 3Cr, Ni + white bronze, or Ni + 3Cr + white bronze.
  • White bronze is a metal alloy including amounts of copper, tin and zinc.
  • the hard outer coating can be an oleophobic coating.
  • the hard outer coating could be an amorphous carbon coating.
  • the amorphous carbon coating can be a coating of amorphous carbon with diamond like properties.
  • the hard outer coating is thin and applied through deposition, spray or dipping techniques.
  • the outer coating has a thickness less than or equal to 100 micrometers.
  • the housing assembly process 800 can also optionally apply 808 a soft edge coating to at least an edge portion of the glass article.
  • the soft edge coating can be formed by a soft material, such as epoxy, silicone or various polymers, to the edge portion.
  • the thickness of the soft edge coating can be about 25-250 micrometers (e.g., 200 micrometers).
  • the soft edge coating at the edge portion can serve to further protect the edge portion from impact events, such as due to a user dropping the housing for the electronic device.
  • the soft edge coating can be applied 808 to the edge portion by injection molding, spraying, deposition, or other techniques.
  • the processed glass article with the soft inner coating, the hard outer coating and optionally the soft edge coating can be installed 810 on or within the housing for the electronic device.
  • the processed glass article is suitable for use as a user interfacing surface of the housing.
  • the processed glass article can be used as a cover glass for a front face of a portable electronic device housing.
  • the processed glass article with its coatings is well suited for use as a user interfacing surface, the processed glass article need not be exposed to user interactions but instead can be provided internal to the housing.
  • the housing assembly process 800 can end.
  • the hard outer coating can be applied on at least a portion of the surface of the glass article. That is, the hard outer coating can, in general, be deposition directly onto the surface of the glass article without any intermediate layers in between or there can be one or more layers between the hard outer coating and the surface of the glass. Different portions of the glass article can have one or more different layers of coatings applied thereto. In another alternative embodiment, a portion of the surface of the glass article has a soft coating (e.g., soft inner coating) applied thereto without any hard outer coating applied. This alternative embodiment can optionally also include a soft edge coating provided on at least an edge portion of the glass article.
  • a soft coating e.g., soft inner coating
  • FIGs. 9A and 9B are diagrammatic representations of electronic device 900 according to one embodiment.
  • FIG. 9A illustrates a top view for the electronic device 900
  • FIG. 9B illustrates a cross-sectional side view for electronic device 900 with respect to reference line A-A'.
  • Electronic device 900 can include housing 902 that has glass cover window 904 (glass cover) as a top surface.
  • Cover window 904 is primarily transparent so that display assembly 906 is visible through cover window 904.
  • Cover window 904 can be coated as in any of the various embodiments, or combinations thereof, discussed above to improve its characteristics. The coatings applied to the cover window 904, however, should not significantly impede the visibility of the display assembly 906 through the cover window 904.
  • Display assembly 906 can, for example, be positioned adjacent cover window 904.
  • Housing 902 can also contain internal electrical components besides the display assembly, such as a controller
  • Display assembly 906 can, for example, include a LCD module.
  • display assembly 906 may include a Liquid Crystal Display (LCD) that includes a Liquid Crystal Module (LCM).
  • LCD Liquid Crystal Display
  • LCDM Liquid Crystal Module
  • cover window 904 can be integrally formed with the LCM.
  • Housing 902 can also include an opening 908 for containing the internal electrical components to provide electronic device 900 with electronic
  • housing 902 may need not include a bezel for cover window 904.
  • cover window 904 can extend across the top surface of housing 902 such that the edges of cover window 904 can be aligned (or substantially aligned) with the sides of housing 902. The edges of cover window 904 can remain exposed. Although the edges of cover window 904 can be exposed as shown in FIGs. 9A and 9B, in alternative embodiment, the edges can be further protected. As one example, the edges of cover window 904 can be recessed (horizontally or vertically) from the outer sides of housing 902. As another example, the edges of cover window 904 can be protected by additional material placed around or adjacent the edges of cover window 904.
  • Cover window 904 may generally be arranged or embodied in a variety of ways.
  • cover window 904 may be configured as a protective glass piece that is positioned over an underlying display (e.g., display assembly 906) such as a flat panel display (e.g., LCD) or touch screen display (e.g., LCD and a touch layer).
  • display assembly 906 such as a flat panel display (e.g., LCD) or touch screen display (e.g., LCD and a touch layer).
  • cover window 904 may effectively be integrated with a display, i.e., glass window may be formed as at least a portion of a display.
  • cover window 904 may be substantially integrated with a touch sensing device such as a touch layer associated with a touch screen. In some cases, cover window 904 can serve as the outer most layer of the display.
  • FIGs. 10A and 10B are diagrammatic representations of electronic device 1000 according to another embodiment of the invention.
  • FIG. 10A illustrates a top view for electronic device 1000
  • FIG. 10B illustrates a cross- sectional side view for electronic device 1000 with respect to reference line B-B'.
  • Electronic device 1000 can include housing 1002 that has glass cover window 1004 (glass cover) as a top surface.
  • Cover window 1004 can be coated as in any of the various embodiments, or combinations thereof, discussed above to improve its characteristics. The coatings applied to the cover window 1004, however, should not significantly impede the visibility of the display assembly 1006 through the cover window 1004.
  • cover window 1004 can be protected by side surfaces 1003 of housing 1002.
  • cover window 1004 does not fully extend across the top surface of housing 1002; however, the top surface of side surfaces 1003 can be adjacent to and aligned vertically with the outer surface of cover window 1004. Since the edges of cover window 1004 can be rounded for enhanced strength, there may be gaps 1005 that are present between side surfaces 1003 and the peripheral edges of cover window 1004. Gaps 1005 are typically very small given that the thickness of cover window 1004 is thin (e.g., less than 3 mm). However, if desired, gaps 1005 can be filled by a material. The material can be plastic, rubber, metal, etc.
  • the material can conform in gap 1005 to render the entire front surface of electronic device 1000 flush, even across gaps 1005 proximate the peripheral edges of cover window 1004.
  • the material filling gaps 1005 can be compliant.
  • the material placed in gaps 1005 can implement a gasket. By filling the gaps 1005, otherwise probably undesired gaps in the housing 1002 can be filled or sealed to prevent contamination (e.g., dirt, water) forming in the gaps 1005.
  • side surfaces 1003 can be integral with housing 1002, side surface 1003 could alternatively be separate from housing 1002 and, for example, operate as a bezel for cover window 1004.
  • Cover window 1004 is primarily transparent so that display assembly 1006 is visible through cover window 1004.
  • Display assembly 1006 can, for example, be positioned adjacent cover window 1004.
  • Housing 1002 can also contain internal electrical components besides the display assembly, such as a controller (processor), memory, communications circuitry, etc.
  • Display assembly 1006 can, for example, include a LCD module.
  • display assembly 1006 may include a Liquid Crystal Display (LCD) that includes a Liquid Crystal Module (LCM).
  • cover window 1004 is integrally formed with the LCM.
  • Housing 1002 can also include an opening 1008 for containing the internal electrical components to provide electronic device 1000 with electronic capabilities.
  • the front surface of electronic device 1000 can also include user interface control 1008 (e.g., wheel control via buttons or touch sensitive surface(s)).
  • cover window 1004 does not cover the entire front surface of electronic device 1000.
  • Electronic device 1000 essentially includes a partial display area that covers a portion of the front surface.
  • Cover window 1004 may generally be arranged or embodied in a variety of ways.
  • cover window 1004 may be configured as a protective glass piece that is positioned over an underlying display (e.g., display assembly 1006) such as a flat panel display (e.g., LCD) or touch screen display (e.g., LCD and a touch layer).
  • display assembly 1006 such as a flat panel display (e.g., LCD) or touch screen display (e.g., LCD and a touch layer).
  • cover window 1004 may effectively be integrated with a display, i.e., glass window may be formed as at least a portion of a display.
  • cover window 1004 may be substantially integrated with a touch sensing device such as a touch layer associated with a touch screen. In some cases, cover window 1004 can serve as the outer most layer of the display.
  • the electronic device can be a handheld electronic device or a portable electronic device.
  • the embodiments discussed herein can serve to enable a glass cover for an electronic device housing to be not only thin but also adequately strong. Since handheld electronic devices and portable electronic devices are mobile, they are potentially subjected to various different impact events and stresses that stationary devices are not subjected to. As such, embodiments discussed herein are well suited for implementation of glass surfaces for handheld electronic device or a portable electronic device that are designed to be thin.
  • the thickness of a glass cover being strengthened can be between about 0.5 - 2.5 mm.
  • the strengthening is suitable for glass products whose thickness is less than about 2 mm, or even thinner than about 1 mm, or still even thinner than about 0.6 mm.
  • the size of the glass cover depends on the size of the associated electronic device. For example, with handheld electronic devices, the size of the glass cover is often not more than five (5) inches (about 12.7 cm) diagonal. As another example, for portable electronic devices, such as smaller portable computers or tablet computers, the size of the glass cover is often between four (4) (about 10.2 cm) to twelve (1 2) inches (about 30.5 cm) diagonal. As still another example, for portable electronic devices, such as full size portable computers, displays (including televisions) or monitors, the size of the glass cover is often between ten (10) (about 25.4 cm) to twenty (20) inches (about 50.8 cm) diagonal or even larger.
  • the thickness of the glass layers may need to be greater.
  • the thickness of the glass layers may need to be increased to maintain planarity of the larger glass layers.
  • the minimum thickness can increase with increasing screen size.
  • the minimum thickness of the glass cover can correspond to about 0.3 mm for small handheld electronic devices, about 0.5 mm for smaller portable computers or tablet computers, about 1 .0 mm or more for full size portable computers, displays or monitors, again depending on the size of the screen.
  • the thickness of the glass cover can depend on the application and/or the size of electronic device.
  • the techniques describe herein may be applied to glass surfaces used by any of a variety of electronic devices including but not limited handheld electronic devices, portable electronic devices and substantially stationary electronic devices. Examples of these include any known consumer electronic device that includes a display.
  • the electronic device may correspond to media players, mobile phones (e.g., cellular phones), PDAs, remote controls, notebooks, tablet PCs, monitors, all in one computers and the like.

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Abstract

L'invention concerne des appareils, systèmes et procédés pour des caractéristiques d'éléments de verre par l'utilisation d'un ou plusieurs revêtements. Les revêtements sont typiquement des revêtements minces, tels que des revêtements de film mince. Les revêtements peuvent servir pour améliorer la résistance des éléments de verre et/ou fournir des surfaces d'interfaçage utilisateur durables. En conséquence, les articles de verre qui ont reçu des revêtements sont aptes à être non seulement minces, mais encore suffisamment résistants de manière à résister à un endommagement par des évènements d'impact. Les articles de verre revêtus sont bien appropriés pour une utilisation dans des produits de consommation, tels que des dispositifs électroniques de consommation (par exemple, des dispositifs électroniques).
PCT/US2012/043007 2011-06-24 2012-06-18 Durabilité améliorée à l'impact pour du verre par application de films minces Ceased WO2012177563A2 (fr)

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US13/168,816 2011-06-24
US13/168,821 US20120327568A1 (en) 2011-06-24 2011-06-24 Thin Film Coatings for Glass Members
US13/168,816 US8715779B2 (en) 2011-06-24 2011-06-24 Enhanced glass impact durability through application of thin films
US13/168,821 2011-06-24

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WO2014130985A3 (fr) * 2013-02-25 2014-10-16 Motorola Mobility Llc Dispositif électronique ayant un affichage et procédé de fabrication
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