CN109878189A - The method for being used to form bending laminated products - Google Patents
The method for being used to form bending laminated products Download PDFInfo
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- CN109878189A CN109878189A CN201711275219.2A CN201711275219A CN109878189A CN 109878189 A CN109878189 A CN 109878189A CN 201711275219 A CN201711275219 A CN 201711275219A CN 109878189 A CN109878189 A CN 109878189A
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- liquid adhesive
- thixotropic liquid
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000005452 bending Methods 0.000 title claims abstract description 23
- 239000000758 substrate Substances 0.000 claims abstract description 141
- 239000000853 adhesive Substances 0.000 claims abstract description 114
- 230000001070 adhesive effect Effects 0.000 claims abstract description 113
- 239000007788 liquid Substances 0.000 claims abstract description 105
- 230000009974 thixotropic effect Effects 0.000 claims abstract description 51
- 239000000047 product Substances 0.000 claims abstract description 32
- 239000013067 intermediate product Substances 0.000 claims abstract description 9
- 238000009415 formwork Methods 0.000 claims abstract description 3
- 239000006059 cover glass Substances 0.000 claims description 4
- 239000002390 adhesive tape Substances 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 description 12
- 239000011230 binding agent Substances 0.000 description 10
- 239000012790 adhesive layer Substances 0.000 description 8
- 238000001723 curing Methods 0.000 description 8
- 239000011521 glass Substances 0.000 description 8
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- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000009826 distribution Methods 0.000 description 4
- 238000003475 lamination Methods 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
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- 238000010586 diagram Methods 0.000 description 3
- 206010019133 Hangover Diseases 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
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- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
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- 239000005357 flat glass Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
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- 238000009736 wetting Methods 0.000 description 1
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Abstract
The invention discloses a kind of methods for forming the laminated products for being bent display equipment, the method includes (a) to provide bending or Flexible formwork assembly on the surface of the first curved substrate, (b) thixotropic liquid adhesive is printed in the surface up-hole plate of first curved substrate, first curved substrate is bonded to the second curved substrate, and (c) wiping applies non-uniform thixotropic liquid adhesive in first curved substrate, to provide the thixotropic liquid adhesive in homogeneous thickness in first curved substrate.The invention also discloses a kind of for being bent the intermediate products of display equipment.
Description
Technical field
The present invention relates to be used to form to can be used for being bent the method for being bent laminated products for showing equipment such as OLED device
And the intermediate products for being bent display equipment.
Background technique
Traditionally, liquid crystal display (LCD) module used in TV, monitor, laptop and mobile device
Shape is flat.Optically clear adhesive (OCA) (including liquid OCA) is successfully used for laminated display unit, such as covers
Glass, touch sensor and display panel.Liquid OCA may be preferably, because it allows to reduce the simpler conversion of cost
Process.
Organic Light Emitting Diode (OLED) display just becomes more and more popular, it has been recognized that can be realized and is such as bent
With the novel shape of buckling shape.Equipment is shown for bending/buckling, is used for laminated component using diaphragm type OCA because it
The thickness being consistent on curved surface.
Summary of the invention
According to foregoing teachings, we recognize that this field needs the improvement side for the laminated component in bending display equipment
Method.
In brief, in one aspect, the present invention provides a kind of formed to be used to be bent the laminated products for showing equipment
Method, this method include (a) providing bending or Flexible formwork assembly on the surface of the first curved substrate, which has template portion
Point, which there is size to correspond to the surface of the first curved substrate for receiving the hole of thixotropic liquid adhesive；(b)
Thixotropic liquid adhesive is printed in the surface up-hole plate of the first curved substrate, with curved for the first curved substrate to be bonded to second
Bent substrate；And (c) wiping applies non-uniform thixotropic liquid adhesive in the first curved substrate, in the first curved substrate
It is upper that thixotropic liquid adhesive in homogeneous thickness is provided.
This method provides for providing the lower hand of cost of uniform liquid adhesive coating on bending/buckling substrate
Section.Surprisingly, thixotropic liquid adhesive can even keep uniform thickness in curved substrate before curing.
On the other hand, the present invention provides a kind of for being bent the intermediate products of display equipment, which includes
(a) the first curved substrate；(b) patterned layer of the uncured thixotropic liquid adhesive on the surface of the first curved substrate；Its
In uncured thixotropic liquid adhesive phase keep uniform thickness to continue at least 10 minutes.
As used herein, the term " bending " in curved displays, curved substrate, bending laminated products etc. generally includes to have
There are both curved surface and the flat surfaces at buckling edge.Curved displays usually have the surface profile of arc.Figure 1A and figure
Mobile phone 100 and wearable device 200 shown in 1B are the examples with the equipment of curved displays.Curved displays are for example
Usually there is the radius of curvature between 50mm and 1000mm.Buckling edge displays for example usually have surface profile, should
Surface profile has the arc of straight line and edge.Mobile phone 300 shown in Fig. 2 is the example with the equipment at buckling edge.
The radius of curvature of buckling edge displays on its edge is usually 10mm or smaller.
As used herein, term " thixotroping " refer to thick under stationary state or normal condition (that is, sticky) but shake,
The gel or liquid of (that is, thinning or less sticky) will be flowed when stirring or be otherwise applied as pressure.
As used herein, term " uniform thickness " refers to that the thickness of layer does not change more than 5%.
Detailed description of the invention
Figure 1A is the schematic diagram of the mobile phone with curved displays.
Figure 1B is the schematic diagram of the wearable device with curved displays.
Fig. 2 is the schematic diagram of the mobile phone with buckling edge displays.
Fig. 3 A is the perspective view of the template for curved substrate.
Fig. 3 B is the cross-sectional view of the template of Fig. 3 A in curved substrate.
Fig. 3 C is the cross-sectional view of the template of Fig. 3 A in curved substrate.
Fig. 4 A is the top view of the curved substrate with one layer of printing binder and template.
Fig. 4 B is the cross-sectional view of the template of Fig. 4 A.
Fig. 5 is bent the cross-sectional view of laminated products during being curing schedule.
The cross-sectional view of curved substrate component during Fig. 6 A is edge cure step.
Fig. 6 B is bent the cross-sectional view of laminated products during being curing schedule.
Fig. 7 shows the viscosity of thixotropic liquid adhesive used in shear rate comparative example.
Fig. 8 A and Fig. 8 B show the thickness profile of the adhesive phase in embodiment 2.
Specific embodiment
It can be used for the method for the bending laminated products in such as curved displays the present invention provides a kind of formation.For shape
It is started from the process of the laminated products with the first curved substrate and the second curved substrate and thixotropic liquid adhesive is applied over the
In one curved substrate.Thixotropic liquid adhesive is applied in the first curved substrate can be by the surface of the first curved substrate
It is expected that printing zone orifice plate prints thixotropic liquid adhesive to complete.Thixotropic liquid adhesive can be shown in usable Fig. 3 A
4 orifice plate of template is printed on the printable adhesive paste in the first curved substrate.
Fig. 3 A shows the perspective view for the template 4 of printing binder during forming bending laminated products.Mould
Plate 4 has template part 5, which there is size to correspond to the surface of the first curved substrate 1 for receiving thixotropic fluid
Body adhesive or hole 6 corresponding to the printing zone in the first curved substrate 1.Fig. 3 B shows the first curved substrate 1, wherein touching
Become liquid adhesive layer 3 to be printed in the first curved substrate 1.Thixotropic liquid adhesive 3 can be by capableing of the hole of printing binder
Plate printing machine is applied on the surface of the first curved substrate 1.Template 4 is for orifice plate printed liquid adhesive on first substrate 1
Layer 3.
Referring to Fig. 3 B, template 4 has template part 5, the table which there is size to correspond to the first curved substrate 1
Printing zone on face is for receiving the hole 6 of thixotropic liquid adhesive 3.Printing zone can be by the first curved substrate 1 and second
Expection lamination area between curved substrate (not shown) limits, and may depend on to form bending laminated products needed for thixotroping
The volume of liquid adhesive.For example, the thickness distribution for the liquid adhesive layer 3 being printed in the first curved substrate 1 can bond
In the 5% of agent thickness profile, the adhesive thickness section is by which use the requirement limits of the final products of bending laminated products
It is fixed.
Due to the rheological characteristic of liquid adhesive, thixotropic liquid adhesive 3 may not be able to discharge completely from the hole of template 46.Ginseng
See Fig. 3 B, to obtain the required thickness T1 for the liquid adhesive layer 3 being deposited in the first curved substrate 1, template part 5 can have
Thickness T2 equal to or more than thickness T1.Further say, it has been observed that during printing thixotropic liquid adhesive 3,
" accumulation " of adhesive 3 may be present, thus liquid adhesive layer 3 has hump section 7, as shown in Figure 3B.Alternatively, touching may be present
Become " hangover " of liquid adhesive 3, thus liquid adhesive layer 3 has tail section 8, as shown in Figure 3 C.The adhesive uniformity
Or flatness be used to form bending laminated products during an important factor for.Therefore, such " accumulation " and " hangover " effect
It is undesirable in lamination, because this can lead to non-uniform liquid adhesive layer, this can be in laminated production when laminated
Lead to gap in product.
Process control can be introduced in printing process with the height H1 or tail section 8 of the hump section 7 for ensuring to accumulate
Height H2 is no more than thickness T1.Alternatively, stencil design can be modified during substrate and template separate to solve to accumulate and trail and imitate
It answers.
Fig. 4 A shows the top view of template 10, which is used to formed with the first curved substrate 11 and the second bending
Printing binder during the laminated products of substrate (not shown).Template 10 has template part 12, which has
Size corresponds to the hole 13 of a part on the surface of the first curved substrate 11.For example, hole 13 can have corresponding to the first bending base
The size of expection printing zone on 10 surface of plate.Template 10 further includes being adapted to allow for the surplus liquid adhesive stream from hole 13
Recessed portion 14.Recessed portion 14 can be limited by the region 15 that the edge 16 of the adjacent bores 13 along template part 12 extends.Region 15
It can be limited by the distance between edge 18 in edge 16 and hole 13 17.B referring to fig. 4, recessed portion 14 can have less than template 10
The depth 19 of thickness 20.
Printing binder can be by using the printing process that such as orifice plate prints or across hole in the first curved substrate 11
Thixotropic liquid adhesive is screen-printed to the surface of the first curved substrate across hole 14 to complete by 14 depositions/distribution adhesive.
Fig. 4 B shows first substrate 11, and wherein liquid adhesive layer 11 is printed on the surface of the first curved substrate 11 using template 10
On.First curved substrate 11 can be such as OLED display.Thixotropic liquid adhesive phase 22 may include that Liquid optical clear is viscous
Mixture (LOCA).During printing binder, the print head of orifice plate printing machine (not shown) usually " placement " in template 10 or
It is supported by it.Therefore, the advantages of template 10, is that print head will be placed in the recessed portion 14 thinner than the thickness of template 10, thus
Then minimize or eliminate the pile up effect at the end of print steps.In this way, when print head lifts from the first curved substrate 11,
Extra liquid adhesive agent material can be adhered to the surface of template 10, thus on the expection printing zone of the first curved substrate 11
Leave liquid adhesive 22.
The second recessed portion (not shown) for accommodating excess adhesive stream may include in template 10.Second recessed portion can
Depth with the thickness 20 for being less than template part 12, and the region of the second edge extension along template part 12, this second
Edge and the edge 16 of template part 12 are opposite.Alternatively, template part 12 may include conical section according to the thickness of template 10
(not shown) is to accommodate extra adhesive stream.Template 10 can include also the second hole in template part 12 to hold such as
Receive display equipment component placement in the case where allow selectivity printing.For example, first substrate 11 can be for moving
Phone or the cover glass for showing equipment, and the second hole can have certain size, and which, which corresponds in cover glass, is used for
The opening of microphone outlets in touch-screen mobile phone equipment.
Template can be made of the material such as stainless steel for being suitable for printing binder.Template can be substantially rigid and be bent
With with will carry out the Curvature Matching of the substrate of orifice plate printing.Alternatively, template can be flexible, such as adhesive tape, so that it is suitable
Shape will be in will carry out the curvature of the substrate of orifice plate printing.The thickness of template can change according to the thickness of required adhesive.
It can be used and apply non-uniform liquid adhesive on cleaning piece wiping substrate.Cleaning piece can be connected to for printed liquid
The orifice plate printing equipment of body adhesive is simultaneously arranged such that in printed liquid adhesive on substrate that cleaning piece wipes simultaneously appoints
What applies non-uniform liquid adhesive.The advantages of wiping liquid adhesive is to provide liquid adhesive in homogeneous thickness in hole
Agent.
During liquid adhesive print steps, thixotropic liquid adhesive can be by staying in point printed in the first curved substrate
Orchestration (such as, slit die) distribution.Orifice plate printing equipment is configured to move on hole to print from narrow
The liquid adhesive of slit die tool distribution.
Cleaning piece can be connected to orifice plate printing equipment at such as rear end of orifice plate printing equipment, to be printed on for wiping
The non-uniform liquid adhesive of application in first curved substrate.Cleaning piece can be configured to apply controlled pressure to wipe and appoint
What applies non-uniform liquid adhesive.Cleaning piece can be adjusted along its length to control liquid adhesive on the entire hole of template
Thickness.Cleaning piece is configured in generally perpendicular direction relative to the movement of orifice plate printing equipment, so as in template
Then upper application pressure is wiped with contacting template.Actuator can be connected to cleaning piece so that cleaning piece can be dropped towards template
Low or separate template increases.Further to say, cleaning piece can move in template via the movement of orifice plate printing equipment, and
With being suitable for wiping liquid adhesive and provide in the first curved substrate the curved cutplanes of liquid adhesive in homogeneous thickness.Example
Such as, the thickness of liquid adhesive is can be controlled in the 10% of adhesive thickness section, and the adhesive thickness section is by wherein using
The requirement of the final products of laminated products limits.Cleaning piece can be elongated bar component, with curved cutplanes with for
Liquid adhesive line contact in first curved substrate.
As thixotropic liquid adhesive is assigned and is printed on by the movement of orifice plate printing equipment in a first direction
In first curved substrate, cleaning piece can wipe any non-uniform liquid adhesive of the application being printed in the first curved substrate simultaneously
Agent is to maintain the consistent volume of liquid adhesive.Alternatively, the printing of thixotropic liquid adhesive can be completed in the first curved substrate
It is wiped later.
Optionally, it is printed with the first of thixotropic liquid adhesive thereon so that the second curved substrate to be bonded in application pressure
Before curved substrate, the thixotropic liquid adhesive that (" precuring ") is printed in the first curved substrate can be at least partially cured.
It is partially cured that step is fully cured for liquid adhesive or is fully cured the 10% to 20% of the period.
It should be appreciated that there are a variety of methods for carrying out precuring.Curing source can be ultraviolet light (UV) light source.UV light source can
Including the multiple UV light emitting diodes (LED) arranged with linear array, or the UV lamp of such as xenon lamp.
If the periphery of only the first curved substrate will be by precuring, may be used has for exposing liquid adhesive
Mask in the hole of curing source.If curing source is UV light source, mask, which can have, is suitable for stopping UV light directing to being printed onto the
The UV of the central part of liquid adhesive in one curved substrate obstructs template part.Mask can also have for being bent first
Liquid adhesive on the periphery of the adhesive printing zone of substrate is exposed to the hole of UV light source.
It, can laminated first curved substrate and the second curved substrate after removing template.It can be used stamping device first
Apply pressure in bonded areas between curved substrate and the second curved substrate to form curved laminated products.In lamination
Period, stamping device can be in vacuum environment.Vacuum pressure in vacuum chamber can be disposed proximate to ideal vacuum or at most
The pressure of 5000Pa.Most preferably, it is produced in high yield to realize, vacuum chamber can be set below to the vacuum chamber pressure of 5000Pa
Power.
Can apply pressure in a vacuum in the bonded areas between the first curved substrate and the second curved substrate, with by
Step increases the bonded areas between the first curved substrate and the second substrate, so that it is curved that the first curved substrate is gradually bonded to second
Bent substrate.Pressure can apply in vacuum environment under fixed environment or variable environment, that is, according to the first curved substrate and second
Bonded areas incrementally increases between curved substrate, incrementally increases pressure applied.
Stamping device can have the pressing plate for being configured for keeping the second curved substrate.The pressing plate is also configured to use
In applying pressure in the bonded areas being printed between the first curved substrate of liquid adhesive and the second curved substrate on it.
For example, pressing plate can be a part for being connected in the indoor press of vacuum.Stamping device, which may also include, to be configured for keeping
The support portion of first curved substrate.
It is bonded in the first curved substrate 31 for be printed with thereon liquid adhesive 37 in the second curved substrate 32 to be formed
After board unit 39, need to solidify liquid adhesive 37 to form laminated products.Fig. 5 is that substrate in batch during step is fully cured
The cross-sectional view of part 39.In Fig. 5, the second curved substrate 32 is the glass substrate without coloured mask and the first curved substrate 31 is
OLED module can carry out complete UV solidification on board unit 39 liquid adhesive 37 is fully cured, so that bonding first is curved
Bent substrate and the second curved substrate are to form bending laminated products.
Optionally, in such as display application of touch screen mobile device, therefore being bent laminated products is to touch screen display
Show device and be bent in two substrates of laminated products one is the cover glass with coloured periphery, implementable two-stage cure
Technique in lamination to solidify liquid adhesive.Fig. 6 A is the cross-sectional view with the board unit 60 of OLED module 61, should
There is module the liquid adhesive layer 64 being printed on the surface of OLED module 6 and glass substrate 63, the glass substrate to have
For being bonded to the surface 69 of OLED module 61.The surface 69 of glass substrate may include extending from the outer periphery of glass substrate 63 66
To the coloured mask 65 of the outer periphery 62 of the viewing area of OLED module 61.Coloured mask can be decorative ink mask,
Including extending the black ink layer in the viewing area that about 1 millimeter (mm) reaches OLED module 61 to outer periphery 62 from outer periphery 66
Or white ink layer.
On the outer periphery 62 of OLED module 61 and the coloured mask of glass substrate 63 under liquid adhesive 64 can by
Adhesive edges 67 are introduced directly into UV light and the edge cure that carries out solidifies, as shown in Figure 6A.
Fig. 6 B is the cross-sectional view of curved substrate component 60, wherein carrying out complete UV solidification on curved substrate component 60 with complete
All solidstate liquid adhesive forms bending laminated products.Solidified by UV solidification liquid adhesive can at room temperature or by
The characteristic of first substrate and the second substrate carries out at a temperature of determining, to minimize the first curved substrate 61 and the second curved substrate
Substrate warp caused by thermal expansion coefficient difference between 63.UV light source may include UV LED point light source or UV lamp source.It uses
The advantages of UV LED source solidifies is that the source UV-LED is solid and long working life.
The present invention can be used for two or more laminated curved substrates to form the flex layers using such as curved displays
Close the bending laminated products in the various applications of product.Being bent laminated products may include touch panel unit, display panel, composite wood
The bed of material is fit or at least two layers of layered product being bonded together with adhesive phase.
For ease of description, this document describes the UV of the adhesive of UV curable and thixotropic liquid adhesive solidifications, but answer
Work as understanding, other types of printable thixotropic liquid adhesive or other also can be used during being used to form laminated products
Curing method, such as visible-light curing.
The printable adhesive paste for being used to form laminated products includes thixotropic adhesive.Its viscosity depends on shear rate, because
For its viscosity increases with shear rate and reduces (that is, shear thinning).Printable adhesive paste may include in 1sec-1Under shear rate
Viscosity is in 15,000 centipoises (cps) to the adhesive or the lower adhesive of viscosity within the scope of 100,000cps.Preferably, liquid
Viscosity of the adhesive at 25 DEG C is at least 30,000cps to maintain coating profile and shape.Liquid adhesive should also have good
Good wetting characteristics, because it should not be flowed within designated treatment time such as 20 seconds after the printing.Suitable thixotroping can print
Brush adhesive includes 3MTMPrintable optics of liquids clear binder 2190A (3M company (3M Company)), 3M EAS1033S
(3M company (3M Company)) and DBS 2460 (E.I.Du Pont Company (DuPont)).
To be bent laminated products used in manufacture curved displays, thixotropic liquid adhesive can be characteristic and be suitable for bonding
The optics of liquids clear binder of display base plate glass, plastics, OLED, touch screen base plate etc..Liquid adhesive can wrap
Include the adhesive of UV curable.
Embodiment:
The following examples further illustrate objects and advantages of the present invention, but the specific material enumerated in these embodiments
Material and its amount and other conditions and details are understood not to improper restriction of the invention.
Thixotropic liquid adhesive
3M has been used in embodimentTMPrintable optics of liquids clear binder 2190A (3MTM Printable Liquid
Optically Clear Adhesive 2190A, pLOCA 2190A).The viscosity of pLOCA 2190A with shear rate increase and
It reduces, as shown in Figure 7.
Embodiment 1A and 1B
It is the curved substrate of 40mm that radius of curvature has been used in embodiment 1A and 1B.Substrate is radius 40mm and height
The PC (polycarbonate) of 150mm, 1/2 perimeter.From the pen for deriving from capable stationery Co., Ltd (DELI Stationery Ltd.)
Frame cuts curved substrate.It, will be with a thickness of 50 μm of 3M insulating tape 5C (PET base+acryloid cement) for embodiment 1A
It is adhered to the inner surface of substrate, forms the rectangle baffle of 70mm × 30mm for use as template.The side 70mm be in arc direction and
30mm lateral edge short transverse.PLOCA 2190 is filled into cylinder and is deaerated.Then by pLOCA with constant speed with linear
It is expressed on an edge of template.Using blade angle be 60 DEG C of stainless steel spatula on substrate by pLOCA 2190 scrape to
Another edge of template.Then template is removed, and coated pLOCA stays in substrate table with the square shape of pattern hole
On face.Keep sample 4 hours in not cured situation.It is measured by vernier caliper, coated pLOCA 2190 is kept
Size.Embodiment 1B is carried out in the mode substantially the same with embodiment 1A, the difference is that the outer surface of substrate is template coating
's.After keeping not solidifying 4 hours, coated pLOCA 2190 keeps size.
Embodiment 2
It is the buckling edge substrate of 8mm that radius of curvature has been used in embodiment 2.Substrate is the glass of 139mm × 70mm, is obtained
From the Samsung Galaxy S6 mobile phone of disassembly.3M insulating tape 5C with a thickness of 50 μm is adhered to the interior table of substrate
Face forms the rectangle baffle of 66mm × 20mm for use as template.PLOCA 2190 is provided on an edge of template, as above
It is described.PLOCA 2190 is scraped to another edge of template on substrate using above-mentioned sharp scraper.Then template is removed, and
And coated pLOCA is stayed on the surface of the substrate with the square shape of pattern hole.Sample is set to keep 4 in not cured situation
Hour.Coating profile is analyzed using BRUKER-NPFLEX laser microscope.The thickness of coating is equably 60 μm, but through applying
The rectangular circumference covered all has 100 μm of frame-like edge, as shown in Figure 8 A and 8 B.
Under the premise of without departing from the scope and spirit of the invention, various modifications of the invention and change are for this field
Technical staff will be apparent.It should be appreciated that the present invention is not intended to improperly restrict in illustrative reality as described herein
Scheme and embodiment are applied, and such embodiment and embodiment only propose by way of example, while the scope of the present invention is only
It is intended to be limited to claim as described below.
Claims (22)
1. a kind of method for forming the laminated products for being bent display equipment, comprising:
(a) bending or Flexible formwork assembly are provided on the surface of the first curved substrate, the template has template part, the template
There is size to correspond to the surface of first curved substrate for receiving the hole of thixotropic liquid adhesive for part；
(b) in the surface up-hole plate printing thixotropic liquid adhesive of first curved substrate for curved by described first
Bent substrate bonding is to the second curved substrate；And
(c) wiping applies non-uniform thixotropic liquid adhesive in first curved substrate, in the first bending base
The thixotropic liquid adhesive in homogeneous thickness is provided on plate.
2. according to the method described in claim 1, further including removing the template from the curved substrate.
3. according to the method described in claim 2, further include the second curved substrate is provided in first curved substrate, and
Apply pressure in bonded areas between first curved substrate and second curved substrate.
4. according to the method described in claim 3, further including providing second curved substrate in first curved substrate
It is at least partially cured the thixotropic liquid adhesive before.
5. method according to any one of the preceding claims further includes solidifying the thixotropic liquid adhesive to bond
State the first curved substrate and second curved substrate.
6. according to the method described in claim 1, wherein the bending shows equipment for Organic Light Emitting Diode (OLED) display
Device.
7. according to the method described in claim 1, wherein in first curved substrate and second curved substrate at least
One is cover glass, touch sensor or display panel.
8. according to the method described in claim 1, wherein the template part includes conical section to accommodate extra thixotropic liquid
Adhesive stream.
9. according to the method described in claim 1, wherein the template part includes being suitable for accommodating extra thixotropic liquid adhesive
The recessed portion of stream.
10. according to the method described in claim 1, wherein the template part includes adhesive tape.
11. according to the method described in claim 1, wherein first curved substrate and second curved substrate have 5mm
To the radius of curvature of 1000mm.
12. according to the method described in claim 1, wherein the uncured thixotropic liquid adhesive keeps equal after wiping
Even thickness continues at least 10 minutes.
13. according to the method for claim 12, wherein the uncured thixotropic liquid adhesive is kept after wiping
Uniform thickness continues at least 30 minutes.
14. according to the method for claim 13, wherein the uncured thixotropic liquid adhesive is kept after wiping
Uniform thickness continues at least 60 minutes.
15. according to the method for claim 14, wherein the uncured thixotropic liquid adhesive is kept after wiping
Uniform thickness continues 4 hours.
16. according to the method described in claim 1, wherein the thixotropic liquid adhesive at 25 DEG C have at least 30,
The viscosity of 000cps.
17. a kind of for being bent the intermediate products of display equipment, comprising:
(a) the first curved substrate: and
(b) patterned layer of the uncured thixotropic liquid adhesive on the surface of first curved substrate；Wherein institute
Stating uncured thixotropic liquid adhesive phase keeps uniform thickness to continue at least 10 minutes.
18. intermediate products according to claim 17, wherein the uncured thixotropic liquid adhesive phase keeps uniform
Thickness continues at least 30 minutes.
19. intermediate products according to claim 18, wherein the uncured thixotropic liquid adhesive phase keeps uniform
Thickness continues at least 60 minutes.
20. intermediate products according to claim 19, wherein the uncured thixotropic liquid adhesive phase keeps uniform
Thickness continues 4 hours.
21. intermediate products described in any one of 7 to 20 according to claim 1, wherein the thixotropic liquid adhesive is at 25 DEG C
It is lower that there is at least viscosity of 30,000cps.
22. intermediate products according to claim 17 further include the second bending base for being laminated to first curved substrate
Plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711275219.2A CN109878189A (en) | 2017-12-06 | 2017-12-06 | The method for being used to form bending laminated products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711275219.2A CN109878189A (en) | 2017-12-06 | 2017-12-06 | The method for being used to form bending laminated products |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109878189A true CN109878189A (en) | 2019-06-14 |
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| CN201711275219.2A Pending CN109878189A (en) | 2017-12-06 | 2017-12-06 | The method for being used to form bending laminated products |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111028690A (en) * | 2019-12-25 | 2020-04-17 | 霸州市云谷电子科技有限公司 | Display screen and display screen processing method |
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| CN111028690A (en) * | 2019-12-25 | 2020-04-17 | 霸州市云谷电子科技有限公司 | Display screen and display screen processing method |
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