CN107265844A - External protective jacket glass and its manufacture method, glass substrate, protective cover glass - Google Patents

External protective jacket glass and its manufacture method, glass substrate, protective cover glass Download PDF

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Publication number
CN107265844A
CN107265844A CN201710363113.1A CN201710363113A CN107265844A CN 107265844 A CN107265844 A CN 107265844A CN 201710363113 A CN201710363113 A CN 201710363113A CN 107265844 A CN107265844 A CN 107265844A
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CN
China
Prior art keywords
mentioned
glass
electronic equipment
glass substrate
main surface
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.)
Granted
Application number
CN201710363113.1A
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Chinese (zh)
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CN107265844B (en
Inventor
下川贡
下川贡一
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.)
Hoya Corp
Hoya Glass Disk Philippines Inc
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Hoya Corp
Hoya Glass Disk Philippines Inc
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Publication of CN107265844A publication Critical patent/CN107265844A/en
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Publication of CN107265844B publication Critical patent/CN107265844B/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • B32B17/10018—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising only one glass sheet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
    • B32B27/285—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42 comprising polyethers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/06—Interconnection of layers permitting easy separation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • C03C15/00—Surface treatment of glass, not in the form of fibres or filaments, by etching
    • C03C15/02—Surface treatment of glass, not in the form of fibres or filaments, by etching for making a smooth surface
    • 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
    • C03C17/28—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material
    • C03C17/32—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material with synthetic or natural resins
    • 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
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2203/00—Other substrates
    • B05D2203/30—Other inorganic substrates, e.g. ceramics, silicon
    • B05D2203/35—Glass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2506/00—Halogenated polymers
    • B05D2506/10—Fluorinated polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2571/00—Protective equipment
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Surface Treatment Of Glass (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Laminated Bodies (AREA)
  • Liquid Crystal (AREA)
  • Surface Treatment Of Optical Elements (AREA)

Abstract

The present invention relates to external protective jacket glass and its manufacture method, glass substrate, protective cover glass.The electronic equipment external protective jacket glass can play the slickness of nonpolluting coating and the performance of durability these two aspects.

Description

External protective jacket glass and its manufacture method, glass substrate, protective cover glass
The application is divisional application, and the international application no of its original application is PCT/JP2013/075667, in its original application State's national applications number is 201380044280.X, and the applying date is on 09 24th, 2013, entitled " electronic equipment cover glass Glass and its manufacture method ".
Technical field
The present invention relates in portable telephone, portable game machine, PDA (Personal Digital Assistant：It is individual Personal digital assistant), digital camera, video camera or tablet PC (Personal Computer：Personal computer) etc. portable equipment Display picture protection in electronic equipment cover glass (cover glass) and its manufacture method applied.
Background technology
In the past, it is general to use transparent outstanding and light weight in order to protect the display pictures of the portable equipments such as portable telephone Acrylic resin board.In recent years, the portable equipment of touch pad mode occupies main flow, in order to tackle the function of touchpad, it is desirable to The intensity of display picture is improved, so that instead of conventional acrylic materials, and more using glass thin and with high intensity Material.Moreover, compared with conventional acrylic materials, glass material is in mechanical strength (traumatic resistance, impact resistance), table All it is outstanding in terms of face flatness, protectiveness (against weather, soil resistance), attractive in appearance and feeling of high class.
In the portable equipment of touch pad mode, operated due to finger directly to be touched to display picture, so Protect and easily adhere to the dirt such as fingerprint or sebum on the cover glass of display picture.Therefore, it is desirable to prevent or suppress the dirts such as fingerprint Cover glass is attached to, or is also easily wiped even if the dirts such as fingerprint are attached to.Therefore, generally it is formed with the surface of cover glass Nonpolluting coating.
In patent document 1, describe and the superficial layer of fluorine class is set on the surface of cover glass as nonpolluting coating.It is used as painting Layer material, exemplified alkoxysilyl PFPE.Coating processing is illustrated in patent document 1, Dipping, evaporation overlap, spray, are coated with and are made after material hardening using roller, in order to which the coating that will be not associated with is removed and utilize molten Agent is rinsed.In patent document 1 record, by setting the superficial layer of fluorine class, can be formed possess soil resistance (hydrophobicity and dredge Oiliness.Collectively referred to as double thin property), the cover glass of traumatic resistance.
Prior art literature
Patent document
Patent document 1：Japanese Unexamined Patent Application Publication 2011-510904 publications
The content of the invention
Invent problem to be solved
However, in order to operate and by user with finger touch pad mode electronic equipment with cover glass rub, because Slickness when this is touched for nonpolluting coating requirement with finger.
Also, it is and conventional due to the more New function of the softwares such as OS in the portable equipments such as the smart mobile phone popularized in recent years The portable equipment of the touch pad mode such as PDA compare, the life of product (during use) of software aspects is elongated.Require therewith portable Equipment also improves durability when being used for a long time on hardware aspect.Particularly because electronic equipment cover glass is revealed with surface The state gone out is assembled into electronic equipment, so requiring nonpolluting coating durability, the durability refers to be resistant to user's The friction of finger and the contact with various objects, and soil resistance and slickness are played for a long time.
That is, the performance of slickness and durability these two aspects is required electronic equipment with the nonpolluting coating of cover glass.
Here, in patent document 1, soil resistance and traumatic resistance to nonpolluting coating are disclosed, but are not considered Slickness, and the structure for meeting slickness and durability these two aspects is not disclosed yet.Therefore, merely with the institute of patent document 1 Disclosed technology, it is impossible to reach the desired characteristic as nonpolluting coating.
Therefore it is an object of the invention to provide the slickness that can play nonpolluting coating and the property of durability these two aspects Electronic equipment cover glass and its manufacture method of energy.
Means for solving the problems
In order to solve above-mentioned problem, after inventor has made intensive studies, just it is conceived to following technology：Used in electronic equipment There is the adhering zone for being attached to glass surface and being impacted to durability and contribute in the inside of the nonpolluting coating of cover glass The flow region of slickness.Then, it is contemplated that by being properly formed these regions, slickness and durability these two aspects are played Performance, so as to complete the present invention.
That is, the representative configurations of electronic equipment cover glass of the invention are characterised by, electronic equipment cover glass Glass possesses：Glass substrate；And nonpolluting coating, nonpolluting coating formation is on the surface of glass substrate, and nonpolluting coating has：Attachment region Domain, the adhering zone is attached to the surface of glass substrate；And flow region, flow region configuration is on the surface of adhering zone.
According to said structure, slickness and durability can be played simultaneously.Adhering zone Shi Jin Stains (for example exist in solvent Impregnated 1 minute in HFE) when the region that remains, flow region is the region dissolved when being impregnated in solvent.
The thickness of adhering zone is preferably 20%~80% relative to the ratio of the thickness of nonpolluting coating, and more preferably 40% ~70%.Because, if the ratio of the thickness of adhering zone is less than 20%, durability can not be played.Also as, if attachment The ratio of the thickness in region is higher than 80%, then can not play slickness.
The thickness of nonpolluting coating is preferably such as 3nm~30nm.Because, if the thickness of nonpolluting coating is less than 3nm, Durability can not be played.Also as, if the thickness ratio 30nm of nonpolluting coating is thick, it cannot be guaranteed that the uniformity of thickness, and thoroughly Bright property reduction, therefore the requirement of portable equipment can not be met.
Preferably, the confficient of static friction on the surface of flow region is 0.2~0.4, and the coefficient of kinetic friction is 0.1~0.3, water Contact angle be 100 degree~120 degree.If above range, then suitable slickness and soil resistance are resulted in.
Nonpolluting coating preferably comprises the per-fluoro polyether compound for having hydroxyl in terminal groups.Thus, with the table of glass substrate The functional groups such as hydroxyl or carboxyl at face are securely joined with, and can play high-durability.
Also, representative constitute of the manufacture method of the electronic equipment cover glass of the present invention is characterised by, the electricity The manufacture method of sub- equipment cover glass includes：Glass substrate production process；Apply the painting with soil resistance with to glass substrate The nonpolluting coating formation process of layer, in nonpolluting coating formation process, forms adhering zone and flow region, the adhering zone is attached In the surface of glass substrate, the flow region is configured on the surface of adhering zone.
Preferably, after nonpolluting coating formation process, in addition to area thickness adjustment process, in area thickness adjustment In process, by adjusting the thickness of flow region, ratio of the thickness relative to the thickness of nonpolluting coating of adhering zone is adjusted.By The thickness of adhering zone can be set to desired ratio by this.Preferably, process is adjusted by area thickness, by adhering zone Thickness be set to 20%~80% relative to the ratio of the thickness of nonpolluting coating, be further preferably set to 40%~70%.
Preferably, in area thickness adjustment process, by toasting (bake) processing, ultraviolet treatment with irradiation, being based on The vacuum adjustment processing of decompression, adjusts the thickness of flow region.
Preferably, in nonpolluting coating formation process, the thickness of nonpolluting coating is set to 3nm~30nm.
Also, other representative configurations of the electronic equipment cover glass of the present invention are characterised by, to glass substrate Surface coating forms nonpolluting coating containing the coating material in terminal groups with the per-fluoro polyether compound of hydroxyl, the antifouling painting Layer has adhering zone and flow region, and the adhering zone is attached to the surface of glass substrate, and flow region configuration is in attachment The surface in region.
Also, above-mentioned electronic equipment is that can be loaded and unloaded in the way of a part for the shell of overlay electronic equipment with cover glass External electronic equipment cover glass, the electronic equipment cover glass has：1st main surface；2nd main surface, the 2nd main table Face is the back side relative with the 1st main surface, is configured for the shell towards electronic equipment；And end face, end face connection 1st main surface and the 2nd main surface, at least a portion in the periphery on the 2nd main surface are provided with depressed part, and the depressed part is from end face court It is recessed on the inside of to the face direction on the 2nd main surface.
According to said structure, when by electronic equipment with cover glass bonding to electronic equipment when, in electronic equipment cover glass Gap is produced by depressed part between electronic equipment.User hooks nail etc. can use electronic equipment in the gap Cover glass is peeled off, therefore, it is possible to play slickness and durability, while can realize that the electronics of the good glass system of fissility is set Standby cover glass.
Possess glass substrate and paste section, the glass substrate has above-mentioned 1st main surface, the 2nd main surface and end Face, the paste section is used to enable glass substrate to load and unload relative to the shell of electronic equipment, and the paste section is along the 2nd main surface Set, at least one in configuring the outer circumference end of the paste section to interval on the inside of the face direction on the 2nd main surface from end face Point, to form depressed part.According to said structure, stickup is configured from end face to interval on the inside of the face direction on the 2nd main surface At least a portion in the outer circumference end in portion, to form depressed part.Therefore, it is possible to be simply forming depressed part.
The depth from end face of above-mentioned depressed part is in the range of 0.1mm~0.3mm.According to said structure, Neng Goutong Shi Shixian fissilities and attractive in appearance.That is, in the case where the depth from end face is in more than 0.1mm, stripping can further be played Property.In the case where the depth from end face is more than 0.3mm, process over time and leave dust etc. in depressed part, may Damage attractive in appearance.
Can possess the glass substrate with above-mentioned 1st main surface, the 2nd main surface and end face, and be led in end face and the 2nd At least one of median surface as depressed part is formed between surface.According to said structure, glass substrate can be utilized Structure forms a part for depressed part.Using the structure, user also easily by nail etc. hook in the gap, therefore, it is possible to Improve the fissility of electronic equipment cover glass.
Above-mentioned end face can be tilted in the way of attenuating from the 2nd main surface side towards the 1st main surface side end, and cut open The inclined plane of linear or curve in view.According to said structure, finger of user etc. can be prevented to be hooked into glass substrate Edge.Therefore, in the case of smart mobile phone with contact panel display etc., especially effectively.
Above-mentioned electronic equipment cover glass can be with the shell cover glass for the part for covering the shell as electronic equipment The mode on the main surface of glass is loaded and unloaded.According to said structure, the cover glass damage or attachment dirt of electronic equipment can be prevented.
Preferably, before the nonpolluting coating formation process, implement by planar fashion plasma treatment and following current side The Glass Surface Modification processing that both processing of formula plasma treatment are constituted.Nonpolluting coating material is hence improved to glass substrate Attachment stability, the durability of nonpolluting coating material face can be significantly improved.
Invention effect
According to electronic equipment cover glass and its manufacture method of the present invention, the slickness of nonpolluting coating can be played and resistance to The performance of long property these two aspects.
Brief description of the drawings
Fig. 1 is the general profile chart for showing electronic equipment one embodiment of cover glass of the present invention.
Fig. 2 is the flow chart of the electronic equipment manufacture method of cover glass of the present invention.
Fig. 3 is the top view of one of the shape for showing cover glass glass substrate.
Fig. 4 is the general profile chart that the electronic equipment manufacture method of cover glass of the present invention is shown according to process sequence.
Fig. 5 is shown the figure of state of the electronic equipment after cover glass bonding to electronic equipment of the 2nd embodiment.
Fig. 6 is by schematical sectional elevation of Fig. 5 electronic equipment after cover glass bonding to electronic equipment.
Fig. 7 is Fig. 6 scope X enlarged drawing.
Fig. 8 is the figure for the electronic equipment Rotating fields of cover glass for showing Fig. 5.
Fig. 9 is figure of electronic equipment the step of cover glass for showing to form Fig. 5.
Figure 10 is the explanation figure on forming the scope of Fig. 7 depressed part.
Figure 11 is the figure for the electronic equipment outer peripheral portion of cover glass for showing the 3rd embodiment.
Figure 12 is electronic equipment other the figure of cover glass for showing the 3rd embodiment.
Figure 13 is the figure of the processing method of the outer peripheral portion of exemplified Figure 11, Figure 12 glass substrate.
Embodiment
Referring to the drawings, being preferred embodiment described in detail to the present invention.Show in said embodiment Size, material and other specific numerical value for going out etc. are intended merely to be readily appreciated that the example of invention, except the situation of special instruction Outside, it is not used in the restriction present invention.In addition, in this specification and accompanying drawing, by substantially the same function, structure Key element, identical label is marked with, to omit repeat specification, and pair omitting elements being not directly dependent upon with present invention figure Show.
[the 1st embodiment]
In the 1st embodiment, as electronic equipment cover glass, by with a part for the shell as electronic equipment The cover glass that mode is assembled in housing is illustrated as example.
Fig. 1 is the general profile chart for showing electronic equipment one embodiment of cover glass of the present invention, and only amplification is shown A part near surface is gone out.The electronic equipment cover glass 1 of present embodiment possesses flat glass substrate 10.In glass The main surface 12 of glass substrate 10 is formed with nonpolluting coating 20.As described later, nonpolluting coating 20 has：Adhering zone 22, the attachment Region 22 is attached to the surface of glass substrate 10；With flow region 24, the flow region 24 is configured on the surface of adhering zone 22.
Adhering zone 22 is that the functional groups such as hydroxyl or carboxyl at the molecule of coating material and the surface of glass substrate are firm The region that ground is combined.Flow region 24 is the region that the mutual strand of coating material maintains polymerization state.The He of adhering zone 22 The composition of flow region 24 is identical, in the difference no in appearance based on microphotograph etc..But flow region 24 easily exists Dissolved in solvent, and adhering zone 22 is not easy to dissolve in a solvent.Therefore, it is possible to be identified as follows：Attachment region Domain 22 is to be impregnated in the region remained during solvent (such as being impregnated 1 minute in HFE), and flow region 24 is when being impregnated in solvent The region of dissolving.
The material of nonpolluting coating 20 is illustrated.In situation of the user using the portable equipment of touchpad operation mode Under, its display picture is directly touched with finger to be operated, therefore the dirt such as fingerprint is easily attached to display picture.Therefore, Expect to prevent or suppress the dirts such as fingerprint to be attached to display picture, or also easily wiped even if the dirts such as fingerprint are attached to.Cause This, as the material of nonpolluting coating 20, preferably selects the material with following soil resistance：(pressing) is directly touched using finger It is also prevented from or suppresses the attachment of the dirts such as fingerprint, or is also easily wiped even if the attachment of the dirts such as fingerprint.Also, it is excellent in the transparency It is elegant also critically important.In the present invention, as material also outstanding with good soil resistance and in the transparency, preferably lift The material for going out to make such as fluorine-type resin material (such as per-fluoro polyether compound) surface energy to reduce.
Preferably, the contact angle of the water on the surface (surface of the side opposite with glass substrate 10) of nonpolluting coating 20 It it is 100 degree~120 degree, the contact angle of oily such as hexadecane is 60 degree~70 degree.Above-mentioned contact angle is in the environment of 22 ± 2 DEG C The value of measure.
By to water or oily contact angle within the above range, to have played following good soil resistance：Use Finger, which directly contacts (pressing), can also prevent or suppress the dirts such as fingerprint to adhere to, or also easily be wiped even if the attachment of the dirts such as fingerprint Fall.In addition, though above-mentioned contact angle is nonpolluting coating formed after initial contact angle, even if said in aftermentioned embodiment The endurancing that bright steel wool is slided, the reduction of contact angle is also less, is able to maintain that good soil resistance.
Also, in electronic equipment of the invention with cover glass 1, it is preferred that formed on the main surface 12 of glass substrate Nonpolluting coating 20 surface on confficient of static friction be 0.2~0.4, the coefficient of kinetic friction is 0.1~0.3.It is antifouling by causing Within the above range, the slickness in nonpolluting coating face is good for the confficient of static friction or the coefficient of kinetic friction on the surface of coating 20, and The sense of touch of hand when being touched with finger is good, therefore in the portable equipment for the cover glass for possessing the present invention, user is to for example The operability of touch pad is good.
The glass for constituting glass substrate 10 is preferably amorphous alumina silicate glass.By such alumina silicate glass shape Into glass substrate it is chemical enhanced after intensity it is high, be suitable for electronic equipment cover glass.It is used as such alumino-silicate glass Glass, for example, can use the alumina silicate glass for containing following material as principal component：SiO2Account for 58~75 weight %, Al2O3Account for 4~20 weight %, Li2O accounts for 0~10 weight %, Na2O accounts for 4~20 weight %.
From the viewpoint of the lightening market demand for responding nearest portable equipment, the thickness of glass substrate 10 is preferred Scope in such as 0.3mm~1.5mm degree, is more preferably in the scope of 0.5mm~0.7mm degree.
Next, being illustrated to the electronic equipment of present invention mentioned above with the manufacture method of cover glass.Fig. 2 is this The flow chart of the electronic equipment of the invention manufacture method of cover glass, Fig. 3 is the vertical view of one of the shape for showing glass substrate Figure, Fig. 4 is the general profile chart that the electronic equipment manufacture method of cover glass of the present invention is shown according to process sequence.
[glass substrate makes (step S100)]
First, large-sized glass plate is cut into defined size by (panelization) by machining etc., produces cover The glass substrate 10 of glass.
For example, the glass plate that the thickness produced by glass tube down-drawing or float glass process etc. is such as 0.5mm or so is laminated into (layer Pressure) multiple (such as tens of or so), the small pieces of given size are cut into cutter using glass.So, disposably to stacking The glass plate of state carries out cutting off processing, then also disposably the small pieces of laminated arrangement can be entered in next shape manufacturing procedure Row shape is processed, therefore is conducive to production.More than considering required for being processed to the size of the cover glass of product plus outer shape Size obtained from amount determines the size of small pieces.
Here, for outer shape process, can also replace laminated arrangement cutting off processing, and to foliated glass raw material by Open and be processed.Also, processed for outer shape, as the means beyond machining, etching method can also be used.
Next, passing through machining or etching and processing, the glass base of the small pieces to being processed to the defined size Plate 10 carry out required for Drilling operation and peripheral shape processing etc..In the example shown in Fig. 3, glass substrate 10 is formed with outer All end face 10a, breach 10b, earhole 10c and key operation hole 10d.Such drilling can be carried out by the machining such as sandblasting Processing and peripheral shape processing, or these Drilling operations and peripheral shape processing are handled together by etching and processing.For spy Not complicated shape processing, etching and processing is than advantageous.Also, it can also be used in combination according to machining shape and be machined and lose Carve processing.Furthermore, it is also possible to by suitably setting dissolving pattern during etching and processing, by foliated glass raw material panelization, and In the same process of the panelization, platelet-shaped is turned into the shape of the glass substrate 10 shown in Fig. 3.
Next, carrying out chemical intensification treatment to completing the glass substrate 10 after shape processing.It is used as chemical intensification treatment Method, preferably such as low-temperature ion-exchange, the low-temperature ion-exchange is no more than glass transition point Within the temperature range of temperature, at a temperature of 300 degree~500 degree for example Celsius, ion exchange is carried out.So-called chemical intensification treatment is Following processing：It is relatively large to atomic radius in chemical enhanced salt by contacting the chemical enhanced salt and glass substrate of melting Alkali metal and glass substrate in the relatively small alkali metal of atomic radius carry out ion exchange, make the ion half The big alkali metal in footpath is impregnated with the top layer of glass substrate, and compression stress is produced on the surface of glass substrate.As chemical enhanced It is preferable to use the alkali nitrates such as potassium nitrate or sodium nitrate for salt.Improved by force by the glass substrate of chemical intensification treatment Degree is outstanding so as to impact resistance, therefore is suitable for what is used in the portable equipment for being applied in impact, pressing and needing high intensity Cover glass.
[glass substrate modification (step S102)]
Next, carrying out Glass Surface Modification processing to the glass substrate 10 produced as described above.Generally, in glass The printing surface side that the surface of substrate 10 is formed is carried towards the inner side of portable equipment, therefore to the opposite side of the printing surface , carry out Glass Surface Modification processing towards the main surface 12 exposed on the outside of portable equipment.
Above-mentioned so-called planar fashion plasma treatment is following form：There are 2 sparking electrodes with a certain interval, at this Processed substrate is installed every interior, produces plasma and is handled.In this case, as the gas used in being produced in plasma Body, such as using He, Ar or N2Deng.Apply the voltage required for plasma is produced, the quilt in plasma space between 2 electrodes The ion of ionization is accelerated in the space, and collides processed substrate surface.Thus, so that the profile of glass baseplate surface is bent The degree of bias (the Rsk of line：Skewness) it is modified glass baseplate surface close to 0 mode, so that the concaveconvex shape of glass baseplate surface Deviation diminish.Here, Rsk is preferably 0 ± 0.3 scope, more preferably 0 ± 0.15 scope.
Also, so-called following current (down stream) mode plasma treatment is following form, across to processed substrate The supply road of supply gas and apply the voltage produced required for plasma between 2 electrodes arranged opposite, and to processed base Plate irradiation supplies the gas after plasma to be handled.By irradiating excited gas to processed substrate surface, in substrate Surface forms the functional group such as hydroxyl or carboxyl, carries out the modification of substrate surface.Also, can also be in the organic of substrate surface Used in the removal of pollutant.As the gas used in this case, such as using N2And O2Or the mixed gas of air etc..
In the present embodiment, handled as Glass Surface Modification, it is important that carry out at above-mentioned planar fashion plasma Reason and concurrent plasma treatment both processing.By carrying out the Glass Surface Modification processing, for example with it is conventional not The nonpolluting coating especially implemented surface treatment etc. to glass substrate and formed by infusion process is compared, and improves nonpolluting coating material To the attachment stability of glass substrate, the durability in nonpolluting coating face can be significantly improved.It is used as preventing for being coated with glass surface Dirty coating material, preferably uses fluorine-type resin material.However, the fluorine-type resin material is being applied into glass base by infusion process In the case of plate, the attachment stability to glass substrate is particularly poor.Therefore, such fluorine-type resin material is being used as antifouling Coating material and in the case of being coated on glass substrate by infusion process, the attachment that can also improve to glass substrate is stable Property, can significantly improve the durability in nonpolluting coating face.
In the case of above-mentioned planar fashion plasma treatment, the reacting gas used is preferably He, Ar or N2, more preferably It is He.Although also, using power according to the species of the reacting gas used how many differences, be preferably in 200~ 500W scope, more preferably 300~400W.Also, for processing time, preferably in the range of 10~250 seconds at progress Reason, more preferably 30~90 seconds.On the other hand, in the case of above-mentioned concurrent plasma treatment, the reacting gas used Preferably inert gas and air or O2Mixed gas, more preferably N2With the mixed gas of air.Though also, use power So how much differences, but be preferably in 400~1200W scope according to the species of the reacting gas used, more preferably locate In 600~1000W scope.Also, as processing time, preferably handled in the range of 5~60 seconds, more preferably 10 Handled in the range of~15 seconds.
As planar fashion plasma treatment and the order of concurrent plasma treatment, above-mentioned planar fashion is carried out first Plasma treatment, followed by above-mentioned concurrent plasma treatment.Thus, glass surface shape is made to change, then Functional group is generated in glass surface, therefore is preferred.
[nonpolluting coating formation (step S104)]
Next, forming nonpolluting coating 20 to main surface 12.Thus, from the only glass substrate 10 as shown in Fig. 4 (a) The formation that state becomes as shown in Fig. 4 (b) has the state of nonpolluting coating 20.Coating material is preferably to have hydroxyl in terminal groups Per-fluoro polyether compound (fluorine-type resin).Thus, tied securely with the functional group such as the hydroxyl or carboxyl at the surface of glass substrate Close, high-durability can be played.
It can be coated with for example, by infusion process and form nonpolluting coating 20.Infusion process is carried out in the following way：By whole glass Glass substrate 10 is impregnated into appropriate solvent in the coating fluid containing coating material, is drawn off and is dried.Using the infusion process, Even if without using vacuum film formation apparatus, can also form the nonpolluting coating 20 of uniform thickness in the entire surface of glass substrate 10. Additionally as film build method, be not limited to infusion process, also exist carried out using centrifugal force the spin-coating method of film forming, hold spray gun using as The material spraying of object comes spraying process, vapour deposition method of film forming etc., it is possible to use these methods are lubricated the film forming of layer 128.
The coating film thickness of nonpolluting coating 20 is not particularly limited, but preferably such as 3nm~30nm scope.If thickness is not Sufficient 3nm, then durability is not enough, when being used for a long time, it is possible to can not give full play to anti-pollution function.On the other hand, if thickness is super Cross 30nm, then it cannot be guaranteed that the uniformity of the thickness of nonpolluting coating 20, and transparency reduction, therefore portable equipment can not be met Requirement.
By setting nonpolluting coating, when applying external force to cover glass, relaxed using nonpolluting coating to glass substrate table The impact in face, is not likely to produce crackle on the glass substrate, and the crackle is the main of the intensity decreases of the glass as fragile material Reason, therefore, it is possible to improve the mechanical strength of cover glass.That is, by forming antifouling painting on by chemical enhanced glass substrate Layer, can further improve the mechanical strength as cover glass.
[area thickness adjustment process (step S106)]
The nonpolluting coating 20 being formed as described above is internally formed adhering zone 22 along with hardening (solvent evaporation) at it With flow region 24.The region that adhering zone 22 is attached to main surface 12 and impacted to durability.Flow region 24 is Contribute to the region of slickness.Therefore, in the present invention, process is adjusted followed by area thickness, adjusts adhering zone 22 Thickness of the thickness relative to nonpolluting coating 20 ratio.
In area thickness adjustment process, the evaporation rate of solvent is adjusted, and makes the small molecule volatilization of molecular weight, thus such as The thickness of flow region 24 is set to reduce to be adjusted shown in Fig. 4 (c).That is, area thickness adjustment process is to adjust indirectly Process of the thickness of adhering zone 22 relative to the ratio of the thickness of nonpolluting coating 20.In addition, in area thickness adjustment process, Compared with flow region 24, it can't see obvious thickness in adhering zone 22 and reduce.It is thought that because constituting adhering zone The functional groups such as hydroxyl or carboxyl at the molecule of 22 coating material and the surface of glass substrate are securely joined with.
The thickness of adhering zone is preferably 20%~80% relative to the ratio of the thickness of nonpolluting coating, more preferably 40%~70%.If because the ratio of the thickness of adhering zone is less than 20%, durability can not be played.And if because The ratio of the thickness of adhering zone is higher than 80%, then can not play slickness., can be more preferable if being further 40%~70% Ground plays durability and slickness.
Process is adjusted as area thickness, baking processing, ultraviolet treatment with irradiation can be specifically carried out, based on decompression Vacuum adjustment is handled.
In baking processing, by being heated in constant temperature oven with the temperature more than evaporating temperature of solvent, it can make Nonpolluting coating 20 is dried.Heating-up temperature is preferably 120 DEG C~180 DEG C.Heat time is preferably 30 minutes~1 hour.Here, plus Hot temperature is higher, and the heat time is longer, more can reduce the thickness of flow region 24.At the same time, using heat, promote The combination of the molecule and glass baseplate surface of the coating material of adhering zone 22 is constituted, can expand adhering zone 22.
In ultraviolet treatment with irradiation, as ultraviolet, preferably its wavelength is 150 to 400 nanometers of ultraviolet.Also, As the light source of ultraviolet, such as can use Cooper-Hewitt lamp, high-pressure mercury-vapor lamp or extra-high-pressure mercury vapour lamp.Also, it is ultraviolet The illumination of line source can be 300 [cmW/cm2] left and right.The illumination of ultraviolet is higher, and irradiation time is longer, can more make The thickness of flow region 24 reduces.Also, environment temperature can also be adjusted in ultraviolet treatment with irradiation, while implementing heating Processing.Thereby, it is possible to expand adhering zone 22.
In vacuum adjustment processing, vacuum is adjusted, to become the air pressure for the vapour pressure for being less than solvent, Thus enable that solvent evaporates.Vacuum is higher (reduction air pressure), and processing time is longer, more can make flow region 24 Thickness reduces.Also, environment temperature can also be adjusted in vacuum adjustment processing, while implementing to heat.Thus, energy Enough expand adhering zone 22.
In addition, implementing printing as needed, and formed after the transparency electrode of touch pad, by cover glass assemblies to portable Equipment.
[embodiment]
Enumerate embodiment below, to the electronic equipment of the present invention with cover glass and its manufacture method further specifically It is bright.In addition, the present invention is not limited to following embodiment.
(1) glass substrate production process
First, the thickness 0.5mm formed from the alumina silicate glass by being produced by glass tube down-drawing or float glass process glass plate Defined size is cut out, the glass substrate of cover glass is produced.As the alumina silicate glass, use and contained following material Chemical enhanced use glass：SiO2Account for 58~75 weight %, Al2O3Account for 4~20 weight %, Li2O accounts for 3~10 weight %, Na2O is accounted for 4~13 weight %.
Next, opening up hole, and embodiment Fig. 3 institutes as the aforementioned in glass substrate using grinding tool (small-bore processing with) etc. The shape processing of the peripheral end face shown.To complete shape processing glass substrate implement it is chemical enhanced, be impregnated into successively sulfuric acid, in Property cleaning agent, pure water, pure water, in IPA, IPA (vapour seasoning) each rinse bath, carry out ultrasonic wave cleaning, and be subject to drying.This Sample, produces glass substrate.
(2) nonpolluting coating formation process
Use and be adjusted to fit by fluorine-type resin (Shin-Etsu Chemial Co., Ltd's system (trade name) KY100 series) with solvent Coating fluid (25 DEG C of the liquid temperature) obtained from concentration, is formed by the entire surface coating for impregnating normal direction glass substrate by fluorine-type resin Nonpolluting coating.The coating film thickness of nonpolluting coating is 10nm.
(3) area thickness adjustment process
Next, adjusting process as area thickness, the heated-air drying of 30 minutes is carried out.Here, as shown in table 1, make to do Dry temperature is different, produces multiple samples.Then, after the thickness of dried nonpolluting coating 20 is determined, it is being used as solvent 1 minute is impregnated in HFE to remove flow region 24, and determines the thickness of adhering zone 22.In table 1, show what is so obtained Ratio of the thickness of adhering zone 22 relative to the thickness of nonpolluting coating 20.Thickness is FiveLab Co. Ltd. system ellipsometers MARY-102 measured value.
[table 1]
Steel wool (#0000) is slided with 1kg load on the nonpolluting coating surface of each sample, check nonpolluting coating surface On confficient of static friction, the variation of the coefficient of kinetic friction and the contact angle to water.The measurement result is shown in 2~table of table 4.It is quiet to rub The initial value for wiping coefficient and the coefficient of kinetic friction is that confficient of static friction is 0.35, and the coefficient of kinetic friction is 0.21.The measure of coefficient of friction Condition is polyethylene and end shape using load 50gf, sliding speed 50mm/ seconds, sliding distance 50mm, end surface material Shape is forniciform slider.The initial value of the contact angle of water is 115 degree.According to JIS R3257, consonance interface science is used The contact angle instrument DM-501 of Co. Ltd. system determines the contact angle of water.
In table 2, evaluation be by the confficient of static friction on the surface of flow region whether be 0.2~0.4 on the basis of sentenced Fixed.In table 3, evaluation by the coefficient of kinetic friction whether be 0.1~0.3 on the basis of judged.In table 4, evaluation is By the contact angle of water whether be 100 degree~120 degree on the basis of judged.
[table 2]
[table 3]
[table 4]
In table 2,3, sample for reference 1,2 is understood, with making steel wool slide 1000 times, 2000 times, coefficient of friction is significantly Increase.And in table 4, sample for reference 1,2, the contact angle of water is greatly reduced.This is considered as：Flow region 24 is easily because of steel The slip of silk flosssilk wadding and be removed, and then adhering zone 22 is removed due to Bao Erye, so that the result that glass substrate exposes.Thus Understand, if the ratio of the thickness of adhering zone is less than 20%, durability can not be played.
Also, the sample for reference 9 in table 2,3 is it is recognized that while be not as sample 1,2 like that, but coefficient of friction increases.Think Because：Handled by 200 DEG C of baking and segment the strand of coating material, the mobility of the molecule in fluidized bed is entered One step is improved, and the durability of fluidized bed itself is substantially reduced.If it follows that the ratio of the thickness of adhering zone be higher than 80%, Slickness can not be then played after long duration test.
Therefore, the ratio of the thickness of adhering zone is preferably 20%~80%.Further, for the sample 4~7 in table 2,3, Coefficient of friction also has almost no change after 2000 slips.It follows that the ratio of the thickness of adhering zone is 40%~70% Situation for more preferably.
In addition, in table 4 sample for reference 9, the contact angle of water hardly reduces.It is thought that because after 2000 times are slided Adhering zone 22 also has residual, maintains the contact angle of water.The above results are summarized to understand：Assuming that making only forming adhering zone 22 In the case of coating, soil resistance (can be evaluated with contact angle) has durability, but slickness (can be commented with coefficient of friction Valency) do not have durability.And understand：Pass through thickness as representative of the present invention by the thickness of adhering zone relative to nonpolluting coating The ratio of degree is set to 20%~80%, can play the slickness of nonpolluting coating and the performance of durability these two aspects.
[the 2nd embodiment]
The electronic equipment of the present invention is illustrated with the 2nd embodiment of cover glass.In the present embodiment, as electricity Sub- equipment cover glass, external protective cover glass is illustrated as example, and the protective cover glass is with overlay electronic equipment Shell a part mode and be detachably stuck.
Fig. 5 is to show to paste the electronic equipment of the 2nd embodiment with cover glass (following, to be protective cover glass 100) The figure of state after electronic equipment.As shown in figure 5, protective cover glass 100 is with a part for the shell of overlay electronic equipment Mode and the external protective jacket glass being detachably stuck.In the 2nd embodiment, the exemplified intelligence of electronic equipment is used as Energy mobile phone 300, but electronic equipment not limited to this or other portable telephones, portable game machine, PDA (Personal Digital Assistant：Personal digital assistant), digital camera, video camera or tablet PC (Personal Computer：It is individual People's computer) etc..
Smart mobile phone 300 possesses contact panel display 302 and covers the shell cover on the surface of contact panel display 302 Glass (electronic equipment cover glass) 304.Shell is with cover glass 304 with the side of a part for the shell as smart mobile phone 300 Formula is installed in the inner side of the frame (bezel) of housing 306.
Protective cover glass 100 includes glass substrate 102.In order to protect shell cover glass 304, protective cover glass 100 with Covering shell is pasted with the mode on the main surface in the outside of cover glass 304 by the user of smart mobile phone 300.
Fig. 6 be Fig. 5 protective cover glass 100 is pasted it is schematical cross-sectional after electronic equipment (smart mobile phone 300) View.In figure 6, for smart mobile phone 300, it is illustrated that shell cover glass 304, and for shell with beyond cover glass 304 Structural element, schematically illustrated as smartphone main body portion 300A.
As shown in fig. 6, protective cover glass 100 includes：Glass substrate 102, the glass substrate 102 is used to protect electronic equipment (such as smart mobile phone 300)；With paste section (adhered layer) 104, the paste section 104 is located at the rear side of glass substrate 102, is used for Glass substrate 102 is detachably pasted into electronic equipment (smart mobile phone 300).Glass substrate 102 has：Surface 102B (the 1st main surface)；Back side 102C (the 2nd main surface), back side 102C are used to configure towards the shell of electronic equipment；And end Face 102A, the end face 102A connection surfaces 102B and back side 102C.Also, the thickness of glass substrate 102 is 0.2~0.5mm.Enter And, as shown in figure 5, on glass substrate 102, with side corresponding with the position such as the microphone, loudspeaker or button of electronic equipment Formula is formed with opening.In top view, paste section 104 be formed as the back side 102C throughout glass substrate 102 remove opening portion Point and outer peripheral portion beyond entire surface.
Fig. 7 is Fig. 6 scope X enlarged drawing.As shown in fig. 7, as overall structure, protective cover glass 100 is in its periphery Partial rear side has the depressed part 106 that the inner side towards face direction is recessed.In the 2nd embodiment, by from glass base The end face 102A of plate 102 configures the outer circumference end of paste section 104 to (Fig. 7 left and right directions) interval on the inside of the direction of face 104A, depressed part 106 is formed to be wrapped by the back side 102C peripheral part, the outer circumference end 104A of paste section, shell cover glass 304 The space enclosed.
Depressed part 106 is formed as described above, when protective cover glass 100 is pasted into smart mobile phone 300, is being protected Gap is produced by depressed part 106 between cover glass 100 and smart mobile phone 300.Therefore, nail etc. can be hooked on by user Protective cover glass 100 is peeled off in the gap.Therefore, it is possible to realize the protective cover glass 100 of the good glass system of fissility.
And the outer circumference end 104A configurations of paste section 104 especially, are being carried out into shape from the position of end face 102A intervals Be in depression portion 106, is thus processed without the glass high to hardness, it becomes possible to is simply forming depressed part 106.
Fig. 8 is the figure of the Rotating fields for the protective cover glass 100 for showing Fig. 5, and Fig. 9 is to show to form Fig. 5 protective cover glass The figure of 100 the step of.As shown in figure 9, by (1) glass substrate formation process S400, (2) chemical enhanced process S402, (4) glass Glass surface modification treatment S404, (4) nonpolluting coating formation process S406, (5) paste section formation process S410, produce protective cover Glass 100.
In glass substrate formation process S400, by being machined and etching, the glass substrate of desired shape is formed 102.The alumina silicate glass containing following material is preferably used for glass substrate 102：SiO2Account for 58~75 weight %, Al2O3 Account for 4~20 weight %, Li2O accounts for 3~10 weight %, Na2O accounts for 4~13 weight %, but not limited to this, can also use sodium calcium glass Glass (soda lime glass) etc..
In chemical enhanced process S402, chemical intensification treatment is carried out to the glass substrate 102 obtained by step S400. So-called chemical intensification treatment is following processing, by contacting the chemical enhanced salt and glass substrate 102 of melting, strong to chemistry In salt dissolving in the relatively large alkali metal ion of atomic radius and glass substrate 102 the relatively small alkali metal of atomic radius from Son carries out ion exchange, and the alkali metal ion for making ionic radius big is impregnated with the top layer of glass substrate 102, should so as to produce compression Power.
As chemical enhanced salt, the alkali nitrates such as potassium nitrate or sodium nitrate are preferably used.And as chemical enhanced The method of processing, preferably low-temperature ion-exchange, the low-temperature ion-exchange are in the temperature no more than glass transition point Within the temperature range of degree, at a temperature of 300 degree~500 degree for example Celsius, ion exchange is carried out.By the glass of chemical intensification treatment Substrate 102 improves intensity so as to which impact resistance is outstanding, therefore as the glass substrate 102 of cover glass 100, even if thickness is Such as 0.3mm or so can also give full play to the effect as cover glass.
In Glass Surface Modification processing S404, the surface of glass substrate 102 is implemented by planar fashion plasma treatment And concurrent plasma treatment both processing constitute Glass Surface Modifications processing.Thus, nonpolluting coating is made to glass base The attachment stability of plate is fully improved, it is possible to increase the durability of nonpolluting coating material face.For Glass Surface Modification processing S404 details is identical with the step S102 shown in the 1st embodiment.
In nonpolluting coating formation process S406, to having carried out the chemical enhanced shape of glass substrate 102 in step S402 Into nonpolluting coating 110.Nonpolluting coating 110 is formed in glass for example, by spraying process, infusion process, vapour deposition method or brushing method etc., coating The surface of glass substrate 102.Coating material is preferably the per-fluoro polyether compound (fluorine-type resin) in terminal groups with hydroxyl.By This, is securely joined with the functional group such as the hydroxyl or carboxyl at the surface of glass substrate 102, can play high slickness and resistance to Long property.Also, by forming nonpolluting coating 110, it is suppressed that the dirt such as fingerprint adheres to, it can also hold even if the attachment of the dirts such as fingerprint Easily wipe.
Nonpolluting coating 110 is internally formed adhering zone 110a and flow region along with hardening (solvent evaporation) at it 110b.In area thickness adjustment process S408, by adjusting the evaporation rate of solvent, and the small molecule of molecular weight is set to volatilize, Reduce flow region 110b thickness to be adjusted.Adhering zone 110a thickness is relative to the thickness of nonpolluting coating 110 Ratio is 20%~80%, is further 40%~70%.Adjust process as area thickness, specifically carry out baking processing, Ultraviolet treatment with irradiation, the vacuum adjustment processing based on decompression.
In the formation process S410 of paste section, paste section 104 is formed on glass substrate 102.Glued by silicon class paste section 104 Connect dosage form into.Here, paste section 104 can also be the structure with following part：Strengthening membrane, the strengthening membrane is used for reinforced glass Substrate 102；1st adhesive linkage, the 1st adhesive linkage is used to be bonded back side 102C and strengthening membrane；And the 2nd adhesive linkage, it is by silicon class Bonding agent is formed, for strengthening membrane to be pasted on into shell cover glass 304 (each layer is not shown).By setting such strengthen Film, can be from rear side reinforced glass substrate 102.Also, for the performance and protective cover glass 100 for realizing fissility simultaneously The viewpoint of thin plate, the thickness of paste section 104 is preferably in the range of 0.02~0.2mm, the model more preferably in 0.05~0.1mm In enclosing.
Referring again to Fig. 7.As shown in fig. 7, on the inside of the direction of depressed part 106 depression length (depressed part 106 from end face 102A rise depth size) L1 can be 0.1mm~0.3mm from the end face 102A of glass substrate 102 scope.Thus, energy It is enough to realize fissility and attractive in appearance simultaneously.That is, in the case where length L1 is in more than 0.1mm, fissility can further be played. In the case that length L1 is more than 0.3mm, process over time, and dust and sebum etc. are retained in depressed part 106, Ke Nengyou Damage the attractive in appearance of smart mobile phone 300.It is many especially for portable electric appts such as the portable phones including smart mobile phone 300 It is placed into the pocket of user, therefore fiber with clothes etc. and inclining in depressed part 106 is readily retained in as dust To.
Figure 10 is the explanation figure on forming the scope of Fig. 7 depressed part 106.Figure 10 (a) is to show the figure of the 1st, figure 10 (b) is to show the figure of the 2nd.In Figure 10 (a) (b), the scope of depressed part 106 is represented by dashed line.
As shown in Figure 10 (a), depressed part can also be set in the complete cycle of the rear side of the outer peripheral portion of protective cover glass 100 106.Also, as shown in Figure 10 (b), only it can also be set on a part of side of the rear side of the outer peripheral portion of protective cover glass 100 Put depressed part 106.In addition, in Figure 10 (b), being set on a side (Figure 10 (b) top) of a pair of short edges of smart mobile phone 300 Depressed part 106, but the not limited to this of depressed part 106 are put, when the part on side sets top view in the depressed part of arc-shaped, or Angle part in the top view of protective cover glass 100 sets depressed part etc., as long as in the outer peripheral portion of protective cover glass 100 At least a portion set depressed part 106.
[the 3rd embodiment]
In above-mentioned 2nd embodiment, depressed part 106 is formed with the position using the outer circumference end 104A of paste section 104 Mode be illustrated, but the protective cover glass 100 of the embodiment of protective cover glass 200 and the 2nd of the 3rd embodiment Difference is：The rear side of the outer peripheral portion of glass substrate 202 is recessed towards inner side, forms a part for depressed part 106.
Figure 11 is the figure of the outer peripheral portion for the protective cover glass 200 for showing the 3rd embodiment, and Figure 12 is to show the 3rd implementation The figure of another of mode.Figure 11 and Figure 12 are figures corresponding with Fig. 7 of the 2nd embodiment.
In the protective cover glass 200 shown in Figure 11, between the end face 202A and back side 202C of glass substrate 202, shape Into having from end face 202A towards inner side (back side 202C face direction on the inside of) inclined median surface 202D.Median surface 202D can be with shape Into the complete cycle of the periphery in glass substrate 202, can also be made only in periphery it is a part of while so that periphery while one Point or glass substrate 202 top view when angle part.Median surface 202D constitutes one of the profile of depressed part 106 Point.
Using such structure, the gap-ratio paste section produced between protective cover glass 200 and smart mobile phone 300 can be made 104 thickness is big.Therefore, nail etc. is more easily hooked in the gap of depressed part 106 by user.Therefore, with the 2nd embodiment party Formula is compared, it is possible to increase the fissility of protective cover glass 200.
In the protective cover glass 210 shown in Figure 12, glass substrate 212 has：Surface (the 1st main surface) 212B；The back side (the 2nd main surface) 212C；The curved end face 212E as inclined plane in sectional view；And between back side 212C and end face Median surface 212D between 212E.End face 212E is tilted in the way of attenuating from back side 212C sides towards surface 212B sides end. Also, the boundary member 212F between the surface 212B and end face 212E of glass substrate 212 is formed as the shape with fillet.And And, end face 212E and median surface 212D boundary member 212A (end face 212E outermost circumferential portion) are again formed as with fillet Shape.
In addition, in terms of the height of the thickness direction of glass substrate 212, preferably end face 212E height is than median surface 212D Height it is high.Because：Usually using when (sticking operation terminate after), compared with the easy degree of hook, during contact Slickness is more important.
As described above, end face 212E is tilted in the way of attenuating from back side 212C sides towards surface 212B sides end, therefore When user operates electronic equipment, the hook of the finger of user etc. can be prevented.Also, by by the surface of glass substrate 212 212B and end face 212E boundary member 212A is formed as fillet, sense of touch when can make the user touch the boundary member with finger It is more smooth.Therefore, it is especially effective in the case of the smart mobile phone 300 with contact panel display 302.
Figure 13 is the figure of the processing method of the outer peripheral portion of exemplified Figure 11, Figure 12 glass substrate 202,212.
Figure 13 (a) is by being machined the figure being processed to glass substrate 202.In such as Figure 11 glass substrate 202 In the case that such Formation cross-section is shaped as the median surface 202D of straight line, exemplified Figure 13 (a) machining (for example, Use the processing of rotating grinding tool 308) it is effective.
Figure 13 (b) is by etching the figure being processed to glass substrate 212.The glass substrate 212 such as Figure 12 In the case that Formation cross-section is shaped as the median surface 212D of curve, the exemplified processing based on etching of Figure 13 (b) is that have Effect.Also, end face 212E is formed on the basis of median surface 212D, and boundary member 212F is formed as to the feelings of fillet Under condition, if etching, also can disposably be formed, therefore etch than advantageous.Specifically, covered using erosion resistant 310 The region being etched beyond region of glass substrate 212, and face side is more etched than rear side, thus, it is possible to suitable Produce Figure 12 median surface 212D, end face 212E and boundary member 212A, 212F shape in locality.
In addition, in the respective embodiments described above, to protective cover glass 100,200,210 is pasted into smart mobile phone 300 Shell is illustrated with the structure on cover glass 304.But the present invention is not limited to this, for example, can also be to be pasted on intelligence The structure of the rear side of the housing 306 of mobile phone 300.
[embodiment]
As embodiment, as shown in Fig. 7 of the 2nd embodiment, paste section 104 is only configured from end face 102A intervals Outer circumference end 104A, formed depressed part 106, change depressed part 106 length L1, tested and evaluated.Glass substrate 102 Thickness is 0.3mm, and the height of depressed part 106 is 0.1mm.
Respectively make table 5 described in sample 101 to 110 the length L1 with depressed part 106 protective cover glass 100, tested as follows.That is, smart mobile phone 300 is pasted by each protective cover glass of sample 101 to 110 is actual, experiment Testee with finger wants how many times to peel off protective cover glass.The benchmark of evaluation is as follows.
◎：1 success, zero：2 times~3 times successes, △：4~5 successes, ×：More than 6 times successes
And then, for the product of each protective cover glass of investigation sample 101 to 110, by each protective cover glass Paste after smart mobile phone 300, investigated using the state after 30 days.In addition, in the present embodiment, as smart mobile phone 300, Use the smart mobile phone for implementing black application with the periphery of cover glass 304 to shell.
[table 5]
[result]
It can be seen from above-mentioned table 5, length (the depth size from end face 102A of depressed part 106) L1 of depressed part 106 In the range of 0.1mm~0.3mm.
More than, referring to the drawings and a preferred embodiment of the present invention is illustrated, but the present invention is also not limited certainly In the example.It is obvious to the skilled person that, in the scope described in claims, alternatively it is conceivable to each Modification or fixed case are planted, these fall within the technical scope of the present invention certainly.
Particularly in above-mentioned 2nd and the 3rd embodiment, with the face at the back side from the end face of glass substrate to glass substrate Interval on the inside of direction and configure and be illustrated centered on the structure of the outer circumference end of paste section.However, it is also possible in glass The structure of nick shaped is set between the 2nd main surface of substrate and end face, and the gap structure is only used as sunk part.For example, In this case, it can also be configured to：In the cross-section, the position of the position of the outer circumference end of paste section and the end face of glass substrate is made Put consistent, and make the inner surface of the gap structure of the outer peripheral portion alignment glass substrate of paste section.Thereby, it is possible in paste section Gap is formed between outer peripheral portion and the shell of electronic equipment, and regard the gap as sunk part.In such a configuration, may be used Implement to make the processing of the cementability reduction of the outer peripheral portion of paste section with advance.
Industrial applicability
The present invention can be utilized as in portable telephone, portable game machine, PDA (Personal Digital Assistant：Personal digital assistant), digital camera, video camera or tablet PC (Personal Computer：Individual calculus Machine) etc. electronic equipment cover glass and its manufacture method applied in the display picture protection of portable equipment.
Label declaration
1：Electronic equipment cover glass；10：Glass substrate；10a：Peripheral end face；10b：Breach；10c：Earhole；10d：Key Handle hole；12：Main surface；20：Nonpolluting coating；22：Adhering zone；24：Flow region；100、200、210：Protective cover glass； 102、202、212：Glass substrate；102A、202A：End face；102B、202B、212B：Surface (the 1st main surface)；102C、202C、 212C：The back side (the 2nd main surface)；202D、212D：Median surface；212E：End face；212A、212F：Boundary member；104：Paste Portion；104A：Outer circumference end；106：Depressed part；110：Nonpolluting coating；300：Smart mobile phone；300A：Smartphone main body portion；302： Contact panel display；304：Shell cover glass；306：Housing；308：Rotating grinding tool；310：Erosion resistant.

Claims (17)

1. a kind of electronic equipment external protective jacket glass, it is can be with a part for the shell of overlay electronic equipment (300) The electronic equipment external protective jacket glass (100 that loads and unloads of mode；200；210), it is characterised in that
The external protective jacket glass has：1st main surface (102B；202B；212B)；2nd main surface (102C；202C；212C), It is the back side relative with above-mentioned 1st main surface, is configured for the shell towards above-mentioned electronic equipment；And end face (102A；202A；212E), it connects above-mentioned 1st main surface and above-mentioned 2nd main surface,
At least a portion in the periphery on above-mentioned 2nd main surface is provided with depressed part (106), and the depressed part is from above-mentioned end face towards upper State and be recessed on the inside of the face direction on the 2nd main surface.
2. electronic equipment as claimed in claim 1 external protective jacket glass, it is characterised in that
Above-mentioned electronic equipment external protective jacket glass possesses：
Glass substrate (102；202；212), it has above-mentioned 1st main surface, above-mentioned 2nd main surface and above-mentioned end face, and
Paste section (104), it is used to enable above-mentioned glass substrate to load and unload relative to the shell of above-mentioned electronic equipment (300), should Paste section is set along the above-mentioned 2nd main surface, is matched somebody with somebody from above-mentioned end face to interval on the inside of the face direction on above-mentioned 2nd main surface At least a portion in the outer circumference end of the paste section is put, to form above-mentioned depressed part (106).
3. electronic equipment as claimed in claim 2 external protective jacket glass, it is characterised in that above-mentioned paste section (104) quilt The shell of a part of the shell as above-mentioned electronic equipment (300) is pasted on cover glass (304).
4. electronic equipment as claimed in claim 3 external protective jacket glass, it is characterised in that above-mentioned paste section (104) by Silicon class bonding agent is formed.
5. electronic equipment as claimed in claim 4 external protective jacket glass, it is characterised in that
Above-mentioned paste section (104) has：
Strengthening membrane, it is used to strengthen above-mentioned glass substrate (102；202；212)；
1st adhesive linkage, it is used to be bonded above-mentioned 2nd main surface and above-mentioned strengthening membrane；And
2nd adhering device, it is formed by above-mentioned silicon class bonding agent, for above-mentioned strengthening membrane to be pasted on into above-mentioned shell cover glass (304)。
6. the external protective jacket glass of the electronic equipment as any one of claim 2 to 5, it is characterised in that above-mentioned viscous The thickness in patch portion (104) is in the range of 0.02mm~0.2mm.
7. the external protective jacket glass of the electronic equipment as any one of claim 2 to 5, it is characterised in that above-mentioned recessed Portion (106) are fallen into from above-mentioned end face (102A；202A；The depth (L1) 212E) risen is 0.1mm~0.3mm scope.
8. the external protective jacket glass of the electronic equipment as any one of claim 2 to 5, it is characterised in that
The external protective jacket glass possesses glass substrate (202；212), the glass substrate possesses above-mentioned 1st main surface, the above-mentioned 2nd Main surface and above-mentioned end face；
At least one of median surface for constituting above-mentioned depressed part (106) is formed between above-mentioned end face and above-mentioned 2nd main surface (202D；212D).
9. the external protective jacket glass of the electronic equipment as any one of claim 2 to 5, it is characterised in that above-mentioned end Face (212E) is tilted in the way of attenuating from the above-mentioned 2nd main surface (212C) side towards the above-mentioned 1st main surface (212B) side, be The inclined plane of linear or curve in sectional view.
10. the external protective jacket glass of the electronic equipment as any one of claim 2 to 5, it is characterised in that it can The shell of a part to cover the shell as above-mentioned electronic equipment (300) is filled in the way of the main surface of cover glass (304) Unload.
11. electronic equipment as claimed in claim 2 external protective jacket glass, it is characterised in that above-mentioned glass substrate (102； 202；212) it is chemical enhanced, with compressive stress layers.
12. electronic equipment as claimed in claim 2 external protective jacket glass, it is characterised in that in above-mentioned glass substrate (102；202；212) surface has the nonpolluting coating (110) containing per-fluoro polyether compound.
13. a kind of electronic equipment manufacture method of external protective jacket glass, it is that electronic equipment (300) uses external protective jacket glass The manufacture method of glass, it is characterised in that
The manufacture method has following processes：
Glass substrate production process, makes glass substrate (102 in the process；202；212), the glass substrate has：1st master Surface (102B；202B；212B)；2nd main surface (102C；202C；212C), the 2nd main surface is and the above-mentioned 1st main surface phase To the back side, configured for the shell towards above-mentioned electronic equipment (300)；And end face (102A；202A；212E), should End face connects above-mentioned 1st main surface and above-mentioned 2nd main surface, and
Paste section formation process, paste section (104) are formed in the process, and the paste section (104) is used to make in the following manner Above-mentioned glass substrate can be loaded and unloaded relative to the shell of above-mentioned electronic equipment (300)：The paste section is along above-mentioned glass substrate Above-mentioned 2nd main surface, the outer of the paste section is configured from above-mentioned end face to interval on the inside of the face direction on above-mentioned 2nd main surface Zhou Duanzhong at least a portion, to form above-mentioned depressed part (106).
14. the electronic equipment as claimed in claim 13 manufacture method of external protective jacket glass, it is characterised in that above-mentioned In the formation process of paste section, the thickness for making above-mentioned paste section (104) is 0.02mm~0.2mm.
15. the manufacture method of the electronic equipment external protective jacket glass as described in claim 13 or 14, it is characterised in that In above-mentioned paste section formation process, make above-mentioned depressed part (106) from above-mentioned end face (102A；202A；The depth (L1) 212E) risen For 0.1mm~0.3mm.
16. a kind of carried out chemical enhanced glass substrate, it is characterised in that
The above-mentioned surface for having carried out chemical enhanced glass substrate has nonpolluting coating,
Above-mentioned nonpolluting coating contains the per-fluoro polyether compound for having hydroxyl in terminal groups, with adhering zone and flow region, The adhering zone is attached to the above-mentioned surface for having carried out chemical enhanced glass substrate, is to impregnate 1 in the solvent being made up of HFE The region remained during minute, the flow region is configured on the surface of the adhering zone, is molten when being impregnated 1 minute in above-mentioned solvent The region of solution；The thickness of above-mentioned nonpolluting coating be more than 3nm below 30nm, and adhering zone thickness relative to it is above-mentioned it is antifouling apply Layer thickness ratio be 20%~80% in the range of.
17. a kind of protective cover glass, it is with having carried out chemical enhanced glass substrate and for detachably pasting The protective cover glass of paste section, it is characterised in that
The above-mentioned surface for having carried out chemical enhanced glass substrate has nonpolluting coating,
Above-mentioned nonpolluting coating contains the per-fluoro polyether compound for having hydroxyl in terminal groups, with adhering zone and flow region,
The adhering zone be attached to it is above-mentioned carried out the surface of chemical enhanced glass substrate, and be by HFE constitute it is molten The region remained when being impregnated 1 minute in agent,
The flow region is configured on the surface of the adhering zone, and the region dissolved when being and being impregnated 1 minute in above-mentioned solvent,
Above-mentioned paste section has：Strengthening membrane；1st adhesive linkage, it is used to be bonded above-mentioned glass substrate and above-mentioned strengthening membrane；And the 2 adhesive linkages, it is made up of bonding agent, for detachably pasting above-mentioned glass substrate.
CN201710363113.1A 2012-09-28 2013-09-24 External protective cover glass, manufacturing method thereof, glass substrate and protective cover glass Active CN107265844B (en)

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