Embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, below in conjunction with the accompanying drawings to the present invention
Embodiment be described in detail.Many details are elaborated in the following description in order to fully understand this hair
It is bright.But the invention can be embodied in many other ways as described herein, those skilled in the art can be not
Similar improvement is done in the case of running counter to intension of the present invention, therefore the present invention is not limited to the specific embodiments disclosed below.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The normally understood implication of technical staff is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein " and/or " include one or more phases
The arbitrary and all combination of the Listed Items of pass.
A kind of cover-plate glass stepped construction provided by the invention is used as the aobvious of the electronic product with touch controllable function
Show face-piece body, these electronic products include but are not limited to mobile phone, camera, tablet computer, terminal display etc..
Fig. 1 is the cover-plate glass stepped construction schematic diagram shown in one embodiment of the invention.Referring to Fig. 1, cover-plate glass layer
Stack structure includes glass substrate 10, tack coat 40 and hardened layer 50.
The cover-plate glass stepped construction further includes UV texture layers 60, layer 70 and ink layer 80 is deposited, the hardened layer 50,
UV texture layers 60, evaporation layer 70 and ink layer 80 are cascading.
The glass substrate 10 has opposite inner surface 101 and outer surface 102.Specific in the present embodiment, glass base
Plate 10 is plate glass.Glass substrate 10 can be rendered as the shape such as rectangle, circle, square according to the electronic product applied
Shape.
In the present embodiment, the inner surface 101 of glass substrate 10 is to be towards the surface inside electronic product, outer surface 102
Towards the surface of user's viewing.In certain embodiments, can according to demands such as the antireflection of electronic product, anti-fingerprint, and
The functional film layers such as antireflection film, fingerprint proof membrane are set on the outer surface 102 of the glass substrate 10.Further, it is also possible to glass
Glass substrate 10 carries out intensive treatment, and cured film is set on any one surface of glass substrate 10.
The tack coat 40 has stickup property, and very thin.Specific in present embodiment, tack coat 40 is optical clear
(OCA, Optically Clear Adhesive) glue.Tack coat 40 is covered on the inner surface 101 of glass substrate 10.Specific to
In present embodiment, the thickness of tack coat 40 is 5~100 μm.It is furthermore preferred that the thickness of tack coat 40 is 5~20 μm.
The hardened layer 50 is formed on a surface of the remote glass substrate 10 for tack coat 40.As shown in table 1,
Give the evaluation result of the hardened layer 50 for embodiment 1-2.
Table 1
|
Thin hardened layer |
Processing procedure injured is bad |
It is bad to be bonded bubble & folds |
Embodiment 1 |
10μm |
0.3% |
5.3% |
Embodiment 2 |
20μm |
0.1% |
20.8% |
Processing procedure injured is bad directly proportional to the thinness of hardened layer, i.e., hardened layer is thinner, and hardened layer is bonded with glass substrate and gets over
It is bad easily to there is injured.
It is bonded bubble and fold is bad directly proportional to the thickness of hardened layer, i.e., hardened layer is thicker, hardened layer and glass substrate
More easily there is bubble or fold in fitting.
As shown in table 1, in embodiment 1, thin hardened layer is 10 μm, and hardened layer is bonded the processing procedure of process with glass substrate
Injured it is bad it is low be 0.3%.In order to which the processing procedure injured for pursuing relatively low is bad, thus thin hardened layer is taken as 10 μm, this thickness
It can play a supporting role to tack coat 40, simultaneously because cover-plate glass stepped construction does not use PET base material, thus embodiment 1
Thickness after hardened layer is bonded with glass substrate is obviously reduced relative to traditional thickness with PET base material, therefore cover board glass
The integral thickness of glass stepped construction is obviously reduced relative to traditional structure with PET base material, so as to meet with touch-control work(
The thinning of the electronic product of energy, the trend demand gently changed.
In example 2, thin hardened layer is 20 μm, and the processing procedure injured that hardened layer is bonded process with glass substrate is bad low
For 0.1%.In order to which the processing procedure injured for pursuing lower is bad, thus thin hardened layer is taken as 20 μm, this thickness can be to tack coat
40 play a supporting role, simultaneously because cover-plate glass stepped construction does not use PET base material, thus the hardened layer and glass of embodiment 2
Thickness after the fitting of glass substrate is obviously reduced relative to traditional thickness with PET base material, therefore cover-plate glass stepped construction
Integral thickness be obviously reduced relative to traditional structure with PET base material, so as to meet to have the electronics of touch controllable function to produce
The thinning of product, the trend demand gently changed.
The UV texture layers 60 are transferred on the hardened layer 50 by UV.Specifically, can when forming UV texture layers 60
The coating UV glue on the hardened layer 50 of formation, is then imprinted by template, UV glue is had specific pattern, UV glue is had spy
Fixed pattern, for example the specific patterns such as drawing pattern, CD lines or ripple glaze are set on UV glue-lines, then apply mask and cure and clear
Wash uncured UV glue, you can obtain the UV texture layers 60 being formed on hardened layer 50.
The evaporation layer 70 is arranged on the UV texture layers 60, and evaporation layer 70 can be the film that metallic luster is for example presented
Layer.Set off by the pattern of UV texture layers 60, can glass substrate 10 102 unilateral observation of outer surface to different pattern and
The appearance of color and luster, is presented metal-like, so as to be obviously improved the display effect of character or icon, lifts user experience.
After the structures such as evaporation layer 70 are set again on the UV texture layers 60, since evaporation layer 70 is nontransparent, UV texture layers 60
It is transparent, UV texture layers 60 still can be observed in 102 side of outer surface of glass substrate 10 and the figure that layer 70 is showed is deposited
Case.
The ink layer 80 is arranged on the evaporation layer 70.Ink layer 80 and evaporation layer 70 are light tight, thus outside
102 side of surface towards inner surface 101 direction observation when, can't see 10 opposite side of glass substrate by ink layer 80 and evaporation
The scene that layer 70 blocks.
The cover-plate glass stepped construction further includes decorative layer 30, and the decorative layer 30 is formed in glass substrate 10 with bonding
Between layer 40, specifically, the decorative layer 30 is formed by silk-screen mode.Specific in present embodiment, the decorative layer 30
For black ring, the black ring is the loop configuration with circular through hole, and the black ring is formed directly on glass substrate, avoids shooting
The visual impact that head alignment error is brought, can so simplify process so as to reduce alignment error, effectively improve the good of product
Rate, simultaneously because the visual impact that camera alignment error is brought is avoided, so as to improve user experience.It is appreciated that
In other embodiment, the decorative layer 30 can be character or icon, and the character or icon are formed at by silk-screen mode
On glass substrate, obtain character relative to the mode of silk-screen after direct exposure, development or icon to have tooth side sawtooth etc. undesirable
Situation, method provided by the invention can be effectively reduced decorative layer such as character or icon directly expose, develop after silk-screen side
Formula triggers bad, so as to effectively lift the yield of product.
Fig. 2 is the cover-plate glass stepped construction schematic diagram shown in another embodiment of the present invention.Referring to Fig. 2, cover-plate glass
Stepped construction includes glass substrate 20, tack coat 40 and hardened layer 50.
The cover-plate glass stepped construction further includes UV texture layers 60, layer 70 and ink layer 80 is deposited, the hardened layer 50,
UV texture layers 60, evaporation layer 70 and ink layer 80 are cascading.
Referring to Fig. 3, the glass substrate 20 includes planar portions 21 and opposite two edges court respectively by planar portions 21
The curved face part 22 that the bending of 21 same side surface of planar portions is extended.It is appreciated that in other embodiments, glass substrate 20
Four edges are extensible to form curved face part 22 or 20 one of edge of glass substrate extends curved face part 22.
Also referring to Fig. 4, more specifically, the glass substrate 20 includes inner surface 201, is spaced with inner surface 201
Outer surface 202, and the lateral circle surface 203 of connection outer surface 202 and inner surface 201.The inner surface 201 refers to recessed one
Face, the outer surface 202 refer to the one side of evagination.The inner surface 201 and outer surface 202 are respectively provided with intermediate region and marginal zone
Domain.Wherein, in the present embodiment, planar portions 21 define the intermediate region, and curved face part 22 defines the fringe region, namely plane
Portion 21 is located at the intermediate region, and curved face part 22 is located at the fringe region.In other embodiments, fringe region can also be
Around the intermediate region, such as when four edges of glass substrate 20 extend to form curved face part 22, the intermediate region
Surrounded by fringe region.
The inner surface 201 equally include planar portions 211 and by planar portions 211 opposite two edges respectively towards a lateral bending
Roll over the curved face part 221 extended.Two curved face parts 221 are symmetrical arranged with respect to planar portions 211.The section of curved face part 221 is circle
Arc.The radius of two curved face parts 221 can be equal, can not also wait.In the present embodiment, the radius of two curved face parts 221 is equal.
The radius of two curved face parts 221 is 1~50mm, preferably 5~50mm, further preferred 5~20mm, preferred 5~10mm.Half
Footpath is smaller, and circular arc camber is more precipitous, thus its appearance 3D stereoeffects of glass substrate 20 formed are stronger.
The outer surface 202 similarly include planar portions 212 and by planar portions 212 opposite two edges respectively towards side
Bend the curved face part 222 extended.Wherein, the curved face part 222 of outer surface 202 and the curved face part 221 of inner surface 201 are courts
The same side is bent, namely is bent towards the side of inner surface 201.Two curved face parts 222 are symmetrical arranged with respect to planar portions 212.
The section of curved face part 222 is circular arc.The radius of two curved face parts 222 can be equal, can not also wait.In the present embodiment, two
The radius of curved face part 222 is equal.The radius of two curved face parts 222 is 1~50mm, preferably 5~50mm, further preferred 5~
20mm, preferred 5~10mm.
Wherein, the position of planar portions 212 and planar portions 211 is corresponding, and size is identical, thus works as the glass substrate 20
Outer surface 202 when placing in the horizontal plane, the orthographic projection of planar portions 211 and planar portions 212 in the horizontal plane is completely superposed.
More specifically, the radius of curved face part 222 and curved face part 221 is also equal.In the present embodiment, inner surface 201 and appearance
The distance between face 202, namely the thickness of the glass substrate 20 is 0.2~1.0mm.Thickness one everywhere of glass substrate 20
Cause, so can preferably eliminate stress concentration, lift integral strength.Preferably, the thickness of glass substrate 20 for 0.5~
0.7mm。
The tangent line of point at the 222 place circular arc most edge of curved face part is defined as C angles, C with the angle of the planar portions 212
Angle is 0 °<C<90 °, be preferably 0 °<C<45°.C angles between curved face part 221 and planar portions 211 can also have identical setting.
Further, the distance between the point at the 221 place circular arc most edge of curved face part and the planar portions 212,
The height H of i.e. described glass substrate 20 is 0.5~5mm.
In certain embodiments, the orthographic projection of the glass substrate 20 in the horizontal plane is rectangle, wherein rectangular
Long 50~500mm, wide 30~300mm.The curved face part 221,222 is arranged on two edges at rectangular long place.
In embodiment shown in Fig. 2 to Fig. 4, curved face part 22 by planar portions 21 with respect to both sides towards side bend extension and
Go out.In other embodiment, it can also extend the curved face part 22 for forming circular arc towards side bending by four sides of planar portions 21.Relatively
The radius for the curved face part 22 that both sides are extended can be equal, can not also wait.The radius for the curved face part 22 that adjacent both sides are extended
Can be equal, it can not also wait.Four sides are respectively formed in the embodiment of curved face part 22, other features can join the reality shown in Fig. 2 to Fig. 4
Example setting is applied, this is not repeated.
Referring to Fig. 2, the tack coat 40 has stickup property, and very thin.Specific in present embodiment, tack coat
40 be optical clear (OCA, Optically Clear Adhesive) glue.Tack coat 40 is covered in equipped with glass substrate 20
On surface.Specific in present embodiment, the thickness of tack coat 40 is 5~100 μm.It is furthermore preferred that the thickness of tack coat 40 is 5
~20 μm.
The hardened layer 50 is formed on a surface of the remote glass substrate 20 for tack coat 40.As shown in table 1,
Give the evaluation result of the hardened layer 50 for embodiment 1-2.
Table 1
|
Thin hardened layer |
Processing procedure injured is bad |
It is bad to be bonded bubble & folds |
Embodiment 1 |
10μm |
0.3% |
5.3% |
Embodiment 2 |
20μm |
0.1% |
20.8% |
Processing procedure injured is bad directly proportional to the thinness of hardened layer, i.e., hardened layer is thinner, and hardened layer is bonded with glass substrate and gets over
It is bad easily to there is injured.
It is bonded bubble and fold is bad directly proportional to the thickness of hardened layer, i.e., hardened layer is thicker, hardened layer and glass substrate
More easily there is bubble or fold in fitting.
As shown in table 1, in embodiment 1, thin hardened layer is 10 μm, and hardened layer is bonded the processing procedure of process with glass substrate
Injured it is bad it is low be 0.3%.In order to which the processing procedure injured for pursuing relatively low is bad, thus thin hardened layer is taken as 10 μm, this thickness
It can play a supporting role to tack coat 40, simultaneously because cover-plate glass stepped construction does not use PET base material, thus embodiment 1
Thickness after hardened layer is bonded with glass substrate is obviously reduced relative to traditional thickness with PET base material, therefore cover board glass
The integral thickness of glass stepped construction is obviously reduced relative to traditional structure with PET base material, so as to meet with touch-control work(
The thinning of the electronic product of energy, the trend demand gently changed.
In example 2, thin hardened layer is 20 μm, and the processing procedure injured that hardened layer is bonded process with glass substrate is bad low
For 0.1%.In order to which the processing procedure injured for pursuing lower is bad, thus thin hardened layer is taken as 20 μm, this thickness can be to tack coat
40 play a supporting role, simultaneously because cover-plate glass stepped construction does not use PET base material, thus the hardened layer and glass of embodiment 2
Thickness after the fitting of glass substrate is obviously reduced relative to traditional thickness with PET base material, therefore cover-plate glass stepped construction
Integral thickness be obviously reduced relative to traditional structure with PET base material, so as to meet to have the electronics of touch controllable function to produce
The thinning of product, the trend demand gently changed.
The UV texture layers 60 are transferred on the hardened layer 50 by UV.Specifically, can when forming UV texture layers 60
The coating UV glue on the hardened layer 50 of formation, is then imprinted by template, UV glue is had specific pattern, UV glue is had spy
Fixed pattern, for example the specific patterns such as drawing pattern, CD lines or ripple glaze are set on UV glue-lines, then apply mask and cure and clear
Wash uncured UV glue, you can obtain the UV texture layers 60 being formed on hardened layer 50.
The evaporation layer 70 is arranged on the UV texture layers 60, and evaporation layer 70 can be the film that metallic luster is for example presented
Layer.Set off by the pattern of UV texture layers 60, can glass substrate 20 202 unilateral observation of outer surface to different pattern and
The appearance of color and luster, is presented metal-like, so as to be obviously improved the display effect of character or icon, lifts user experience.
After the structures such as evaporation layer 70 are set again on the UV texture layers 60, since evaporation layer 70 is nontransparent, UV texture layers 60
It is transparent, UV texture layers 60 still can be observed in 202 side of outer surface of glass substrate 20 and the figure that layer 70 is showed is deposited
Case.
The ink layer 80 is arranged on the evaporation layer 70.Ink layer 80 and evaporation layer 70 are light tight, thus outside
202 side of surface towards inner surface 201 direction observation when, can't see 20 opposite side of glass substrate by ink layer 80 and evaporation
The scene that layer 70 blocks.
The cover-plate glass stepped construction further includes decorative layer 30, and the decorative layer 30 is formed in glass substrate 20 with bonding
Between layer 40, specifically, the decorative layer 30 is formed by silk-screen mode.Specific in present embodiment, the decorative layer 30
For black ring, the black ring is the loop configuration with circular through hole, and the black ring is formed directly on glass substrate, avoids shooting
The visual impact that head alignment error is brought, can so simplify process so as to reduce alignment error, effectively improve the good of product
Rate, simultaneously because the visual impact that camera alignment error is brought is avoided, so as to improve user experience.It is appreciated that
In other embodiment, the decorative layer 30 can be character or icon, and the character or icon are formed at by silk-screen mode
On glass substrate, obtain character relative to the mode of silk-screen after direct exposure, development or icon to have tooth side sawtooth etc. undesirable
Situation, method provided by the invention can be effectively reduced decorative layer such as character or icon directly expose, develop after silk-screen side
Formula triggers bad, so as to effectively lift the yield of product.
In some other embodiments, glass substrate 20 is not limited to the structure shown in Fig. 1-Fig. 4.For example, Fig. 5 and figure
It is the glass substrate of another embodiment shown in 6, it includes inner surface 201a, the outer surface 202a with inner surface 201a intervals,
And the lateral circle surface of connection outer surface 202a and inner surface 201a (figure is not marked).
The distance between described inner surface 201a and outer surface 202a are 0.2~1.0mm, namely the thickness of the glass substrate
Spend for 0.2~1.0mm.
The inner surface 201a is in symmetrically to set along central shaft 203a with central shaft a 203a, the inner surface 201a
Put.The outer surface 202a also there is a central shaft 204a, the outer surface 202a to be symmetrical set along central shaft 204a.
The inner surface 201a is bent to form the introversion of circular arc centered on the central shaft 203a of inner surface 201a to homonymy
Face, the outer surface 202a are bent to form the positive camber of circular arc, institute centered on the central shaft 204a of outer surface 202a to homonymy
State negative camber, the radius R of positive camber is 50~1000mm, the height H of the glass substrate is 0.5~5mm.
In certain embodiments, the negative camber, the radius R of positive camber are equal, namely the thickness everywhere of glass substrate is equal
It is even.Stress concentration so can be preferably eliminated, lifts integral strength.
The height H of the glass substrate refers to inner surface 201a two parallel sides farthest with respect to central shaft 203a
The distance between plane where 205a, 206a, central shaft 204a of outer surface 202a.
In certain embodiments, two parallel sides 205a, 206a of inner surface 201a in circular arc and the center of circle of circular arc
The corresponding central angle of circular arc where the angle of line, namely inner surface 201a is represented with C, wherein 60 ° of 180 ° of < C <.Outer surface
The corresponding central angle C of circular arc of 202a also meets 60 ° of 180 ° of < C <.
It is the glass substrate of another embodiment shown in Fig. 7, with reference to Fig. 8 and Fig. 9, the glass substrate includes interior table
Face 201b, the outer surface 202b with inner surface 201b intervals, and the lateral circle surface (figure of connection outer surface 202b and inner surface 201b
Do not mark).
The distance between described inner surface 201b and outer surface 202b are 0.2~1.0mm, namely the thickness of the glass substrate
Spend for 0.2~1.0mm.
The inner surface 201b has a center line W1 in the direction of the width, and the outer surface 202b is in the direction of the width
With a center line W2.The inner surface 201b is symmetrical along center line W1 minute surfaces.The outer surface 202b is along center line W2 minute surfaces
Symmetrically.Glass substrate is placed on horizontal plane, makees orthographic projection in the horizontal plane to the glass substrate, the inner surface 201b's
The center line W2 of center line W1 and outer surface 202b is overlapped on the orthographic projection direction of glass substrate.
With reference to Figure 10 and Figure 11, the inner surface 201b has a center line L1, the appearance in the longitudinal direction
Face 202b also has a center line L2 in the longitudinal direction.The inner surface 201b is symmetrical along center line L1 minute surfaces.The appearance
Face 202b is symmetrical along center line L2 minute surfaces.Glass substrate is placed on horizontal plane, the glass substrate is made just in the horizontal plane
Projection, the center line L2 of the center line L1 and outer surface 202b of the inner surface 201b are heavy on the orthographic projection direction of glass substrate
Close.The orthographic projection of described center line L1, L2 are vertical with the orthographic projection of described center line W1, L2.
The inner surface 201b centered on the center line L1 of length direction to same lateral bend, the outer surface 202b also with
To the same lateral bend centered on the center line L2 of length direction.The circle of the center line L1 of the length direction of the inner surface 201b
Arc radius is 50~1000mm, the arc radius of the center line L2 of the length direction of the outer surface 202b also for 50~
1000mm.In the embodiment shown in FIG., center line L1, the L2 of the inner surface 201b and outer surface 202b in the longitudinal direction
Arc radius it is equal.
The inner surface 201b is at the same time to the same lateral bend, the appearance also centered on the center line W1 of width
Face 202b is to the same lateral bend yet centered on the center line W2 of width.The width of the inner surface 201b
The arc radius of center line W1 is 50~1000mm, the arc radius of the center line W2 on the width of the outer surface 202b
Also it is 50~1000mm.The arc radius of center line W1, the W2 of the inner surface 201b and outer surface 202b in the direction of the width
It is equal.
The height of the glass substrate is 0.5~5mm.The height refers to, the central point of the outer surface 202b (namely
The intersection point of the center line W2 on center line L2 and width on length direction) it is minimum extremely to 201 position of inner surface
The distance between plane that few three points are formed.Shown in figure in embodiment, in the corner of inner surface 201b is generally aligned in the same plane,
The distance between central point of plane and outer surface 202b where the height namely the corner.
In certain embodiments, the thickness everywhere of glass substrate is uniform.Stress concentration so can be preferably eliminated, is lifted
Integral strength.
In addition, the arc radius of center line W1, W2 can be equal with the arc radius of center line L1, L2, can not also phase
Deng.
In certain embodiments, the circular arc of center line L1, the L2 of inner surface 201b and outer surface 202b in the longitudinal direction
Corresponding central angle is C1, wherein 60 ° of 180 ° of < C1 <.The center line of inner surface 201b and outer surface 202b in the direction of the width
The corresponding central angle of circular arc of W1, W2 are C2, wherein 60 ° of 180 ° of < C2 <.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope that this specification is recorded all is considered to be.
A kind of cover-plate glass stepped construction provided by the invention, at least has the advantage that:
For the thin hardened layer that the present invention uses for 10~20 μm, the hardened layer of this thickness range is bonded process with glass substrate
Processing procedure injured it is bad it is low be 0.3%.In order to which the processing procedure injured for pursuing relatively low is bad, thus thin hardened layer is taken as 10~20
μm, this thickness range can play a supporting role tack coat, simultaneously because cover-plate glass stepped construction does not use PET base material, because
And the thickness after the hardened layer of the present invention is bonded with glass substrate is obviously reduced relative to traditional thickness with PET base material,
Therefore the integral thickness of cover-plate glass stepped construction is obviously reduced relative to traditional structure with PET base material, so as to meet
The thinning of electronic product with touch controllable function, the trend demand gently changed.
Embodiment described above only expresses the several embodiments of the present invention, its description is more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.