CN106920466A

CN106920466A - The manufacture method of front panel

Info

Publication number: CN106920466A
Application number: CN201610866612.8A
Authority: CN
Inventors: 植松章
Original assignee: Dia Molding Co Ltd
Current assignee: Japan MCC Advanced Molding Co.,Ltd.
Priority date: 2016-01-29
Filing date: 2016-09-29
Publication date: 2017-07-04
Anticipated expiration: 2036-09-29
Also published as: JP2017131858A; JP5948515B1; CN106920466B

Abstract

Offer can make the manufacture method of the new front panel that the face side end edge portion of front panel has fillet, the end edge portion that can also be prevented face side end edge portion from bleaching, can make coating will not produce resin to accumulate.A kind of manufacture method of front panel is proposed, it is the manufacture method of the front panel for possessing coating on the surface of panel substrates, it is characterised in that it possesses：Painting process, in the operation, coating is formed in the surface coating transparent resin of panel substrates component, and makes the crest line of the end edge portion of the coating for curve, so as to make coating stacking panel substrates component；And, operation is cut off, in the operation, aforementioned coatings laminate panel base material is vertically cut off with component to cut clout part, so that the end edge portion of aforementioned coatings has fillet, and the end face of continuous said panel base material turns into perpendicular end surface thereunder.

Description

The manufacture method of front panel

Technical field

Front panel and vehicle mounted guidance system the present invention relates to smart mobile phone, tablet terminal, portable game device etc. The manufacture method of the front panel used in the guidance panel of system, industrial machinery etc..

Background technology

On the front panel used as the guidance panel of smart mobile phone, tablet terminal and onboard navigation system etc. Base material, all the time, use glass material.But, the impact resistance of glass material, light weight equal difference, thus propose by Its scheme for being replaced by synthetic resin material.

For example, in patent document 1, disclosing the layer obtained by polycarbonate resin and acrylic resin are coextruded The laminated resin body of hard coat is laminated in stack.

In addition, in patent document 2, being difficult to scratch and manufacture relatively easy touch panel stacking extrusion tree as surface Fat plate, discloses a kind of touch panel stacking extruded resin sheet, it is characterised in that it is in poly- carbonic acid by co-extrusion modling Acrylic resin is laminated on the surface of the side at least being touched of ester resin bed and formed.

In addition, as the touch panel display device using this resin plate, disclosing on foregoing resin plate The touch panel that configures touch input and the front panel apparatus that are formed (referring for example to patent document 3 etc.).

Prior art literature

Patent document

Patent document 1：Japanese Unexamined Patent Publication 2006-103169 publications

Patent document 2：Japanese Unexamined Patent Publication 2010-182263 publications

Patent document 3：Japanese Unexamined Patent Publication 2002-40243 publications

The content of the invention

Problems to be solved by the invention

In the on-vehicle displays such as onboard navigation system, from aspects such as crashworthinesses, it is desirable to make front panel Face side end edge portion has fillet.

However, therefore, on the panel substrates component coating resin and after forming coating, have with its face side end edge portion When the mode of fillet cuts into R chamfering shapes, the face side end edge portion of its section, i.e. front panel bleaches sometimes.

On the other hand, by panel substrates cutting of members into after the shape of regulation, coating resin and when forming coating, have When coating end edge portion produce resin accumulate, make outward appearance, dimensional accuracy reduction.

Then, the present invention is in view of above-mentioned problem, there is provided can make the face side end edge portion of front panel has fillet, additionally it is possible to Prevent face side end edge portion from bleaching, and can make coating end edge portion will not produce resin accumulate new front panel manufacture Method.

The scheme for solving problem

The present invention proposes a kind of manufacture method of front panel, and it is the front panel for possessing coating on the surface of panel substrates Manufacture method, it is characterised in that it possesses：Painting process is transparent in the surface coating of panel substrates component in the operation Resin and form coating, and make the crest line of the end edge portion of the coating for curve, so as to make coating stacking panel substrates structure Part, panel substrates component possesses following structure：With vertical view front panel considerable part when making vertical view equivalent to front panel The crest line of the bellying for being bloated to upper surface side and being formed and the face side end edge portion for making the bellying is the knot of curve Structure；And excision operation, in the operation, in the rear side End of Curve of the crest line of the bellying of said panel base material component Or than rear side End of Curve near the position of the face side origin of curve or face side End of Curve or the specific surface side of crest line Aforementioned coatings laminate panel base material is vertically cut off remaining to cut by End of Curve near the position of the face side origin of curve with component Material part, so that the end edge portion of aforementioned coatings has fillet, and the end face of continuous said panel base material turns into thereunder Perpendicular end surface.

The effect of invention

According to the manufacture method of front panel proposed by the present invention, can make the face side end edge portion of front panel has fillet, Can also prevent face side end edge portion from bleaching, and the end edge portion of coating can be made not produce resin to accumulate.

Brief description of the drawings

Fig. 1 is a top perspective view for example of the front panel for showing making in an example of the invention.

Fig. 2 is an example of the panel substrates component of making in an example of the invention, and (1) of Fig. 2 is its section Face figure, (2) of Fig. 2 are top view when overlooking.

Fig. 3 is the coating that coating is formed on panel substrates component for showing to be made in an example of the invention One sectional view of example of laminate panel base material component.

Fig. 4 is that another that show to make in an example of the invention forms coating on panel substrates component and form Coating stacking panel substrates component another example sectional view.

Fig. 5 is the coating stacking that coating is formed on panel substrates component of making in an example of the invention One close-up sectional view of example of panel substrates component, is appropriate off-position between 2 vertical dotted lines.

Fig. 6 is a sectional view for example of the panel substrates components different from Fig. 2.

Fig. 7 is the coating stacking that coating is formed on panel substrates component of making in an example of the invention The close-up sectional view of different from a Fig. 5 example of panel substrates component, is appropriate cut-out between 2 vertical dotted lines Position.

Fig. 8 is a close-up sectional view for example of the front panel of making in an example of the invention.

Fig. 9 is the figure for showing comparative example 1, and (1) of Fig. 9 is the coat layer that coating is formed on panel substrates component The close-up sectional view of folded panel substrates component, (2) of Fig. 9 are the partial enlargement of the front panel (sample) after being cut Sectional view.

Figure 10 is the close-up sectional view of the front panel (sample) of making in comparative example 2.

Figure 11 is the close-up sectional view of the front panel (sample) of making in comparative example 3.

Description of reference numerals

1 front panel

2 display faces

3 peripheries

10 panel substrates

11 panel substrates components

12 bellyings

13 crest lines

14 clout flange parts

15 base materials display face

16 substrates perimeter portions

20 coatings

21 crest lines

22 coatings

23 coatings

24 coatings

Specific embodiment

Then, the present invention is illustrated based on embodiment example.But, the present invention is not limited to embodiments described below.

This manufacture method of ＜＞

One manufacture method of the front panel of example (referred to as " this manufacture method ") of embodiments of the present invention is that possess The manufacture method of the front panel (referred to as " this front panel ") of following operation：Substrate injection molding procedure, in the operation, by panel Base material component injection moulding；Painting process, is viewing side in the substrate surface portion of the panel substrates component in the operation Surface element is coated with transparent resin and forms coating, so as to make coating stacking panel substrates component；And cutting process, at this In operation, the unnecessary part (also referred to as " clout part ") of coating stacking panel substrates component is eliminated.

As long as this manufacture method possesses aforementioned substrates injection moulding operation, foregoing painting process and foregoing cutting process i.e. Can, it is also possible to possess other operations.For example, aftermentioned annealing operation, printing process, other operations can be inserted suitably.

One stereogram of example of the front panel of manufacture in this manufacture method is shown in Fig. 1.The front panel 1 possesses as follows Structure：Possess the panel surface around the display face 2 of display image with periphery 3, possess on panel substrates 10 Coating 20.But, this is only an example of the front panel manufactured by this manufacture method, and this front panel can possess arbitrarily Shape.

＜ substrate injection molding procedures ＞

In substrate injection molding procedure, panel substrates component is formed by injection moulding.

(material of panel substrates component)

The material of panel substrates component is transparent thermoplastic resin.Can for example exemplify selected from by carbonic ester It is acrylic resin, the poly terephthalic acids such as resin, plexiglass, acrylonitrile-styrene copolymerized resin Glycol ester, polyimides, polyethylene, polypropylene, ester ring type polyolefin-based resins, phenylethylene resin series, vinyl chloride-based resin, One kind or two or more resin in the group of phenolic aldehyde system resin, melamine series resin and epoxy system resin composition.Wherein, from saturating Bright property and prevent deformation etc. from the viewpoint of, it is preferable to exemplify makrolon, acrylic resin etc..Wherein, for car The front panel used in load equipment touch panel display, from from the viewpoint of preventing dustability, preferred makrolon.For For makrolon, it may be desirable to the raising of the hardness of coating, thus easily be subject to formed resin accumulation caused by influenceed, can Further enjoy appearance investigation effect of the invention.As the makrolon used in this manufacture method, it is not limited to double Phenol A as main material common aromatic copolycarbonate, it is also possible to use for example using other raw materials as the fragrance of main material Adoption carbonic ester, fatty poly-ester carbonate, aromatic series fatty poly-ester carbonate.For example, also including as the different mountain of diol component The ether such as pears alcohol glycol is makrolon of principal component etc..

(shape/thickness of panel substrates component)

Using injection moulding, the panel substrates component of arbitrary shape and thickness can be formed.Thus, for example, can Formation possesses the bellying 12 of such as fort shape and the outer circumference in bellying 12 possesses the clout flange part 14 of low single order Panel substrates component 11, equivalent to the area portions of front panel 1 when bellying 12 is by making to be overlooked as shown in Fig. 2 (1) That is it is that viewing side is bloated with suitable thickness in upper surface side that (2) of vertical view front panel considerable part such as Fig. 2 are shown,. It should be noted that bellying 12 is not limited to fort shape.

Now, bellying 12 can both be formed as wall thickness as shown in (1) of Fig. 2 and increase the part that is bloated to upper surface side Size, can also be formed as and the identical thickness of clout flange part 14 as shown in Figure 6 in addition.

It is further preferred, that the crest line for making the face side end edge portion of above-mentioned bellying 12 is curve, in other words, make crest line 13 have fillet with R shapes.It is curve, i.e. tool thereby, it is possible to easily make the crest line 13 of the face side end edge portion of aftermentioned coating 20 There is fillet, as a result, can make the face side end edge portion of front panel 1 has fillet, therefore, it is possible to improve such as crashworthiness Deng.

Now, as shown in figure 5, in crest line 13 of the panel substrates with the face side end edge portion of the bellying 12 of component 11, table The difference h1 of the height of surface side origin of curve 13a and the height of face side End of Curve 13b be in table direction apart from h1 from safety Property, for example prevent by sharp edges cause incised wound etc. from the viewpoint of be preferably 0.1~1.0mm, wherein preferably more than 0.2mm Or below 0.8mm, wherein preferably more than 0.3mm or below 0.5mm.

In addition, can also will be as shown in Figure 3 for example that base material shows with the facial 2 corresponding parts of the display of front panel 1 Face 15 is formed as tabular surface, surrounded when will overlook the substrates perimeter portion 16 of base material display face 15 surface be made it is smooth Face.

In addition, can also be as shown in Figure 4 for example that base material shows with the facial 2 corresponding parts of the display of front panel 1 The surface of face 15 forms many concavo-convex, and the surface that the substrates perimeter portion 16 of base material display face 15 will be surrounded when overlooking is made Even surface.

Now, all end edge portions can be formed as flexure plane by substrates perimeter portion 16, it is also possible to be formed as corrugated surface.In addition, Opening portion, recess, convex portion, the flanks such as through hole etc. arbitrarily can also be set in the appropriate location in substrates perimeter portion 16.In addition, Can in position assign the various patterns such as grid pattern, crenellation pattern.

It is many concavo-convex on what is formed on the surface of base material display face 15, it is preferred that in order to assign antiglare effect It is made micro concavo-convex face, the i.e. texture finished surface for example in texture shape.

When the surface of base material display face 15 forms many concavo-convex, the surface roughness on the surface of base material display face 15 (Rz) RzC is preferably 5 μm~24 μm.When the RzC is more than 5 μm, sufficient antiglare effect can be obtained, so it is preferred that, it is 24 μ During below m, can further prevent antiglare effect too strong and make the fuzzy situation of display, so it is preferred that.

From the above point of view, surface roughness (Rz) RzC on the surface of base material display face 15 is preferably 5 μm~24 μ M, wherein more preferably more than 8 μm or less than 20 μm, wherein more preferably more than 12 μm or less than 18 μm.

It should be noted that surface roughness (Rz) is 10 mean roughness specified by JIS B 0601-1994, example Can such as be determined using surfagauge, shape measuring instrument, tool microscope, laser microscope instrument (on Surface roughness (Rz) described later, is also same.).

In addition, during the concavo-convex height on the surface of increase base material display face 15, even if thickening the thickness of coating, it is also possible to Obtain antiglare effect.But, when concavo-convex highly excessive, the light of liquid crystal panel is possible to flash.

From the above point of view, the concavo-convex maximum height (Ry) on the surface of base material display face 15 is preferably 10~22 μ M, wherein more preferably more than 14 μm or less than 20 μm, wherein especially more preferably more than 16 μm or less than 18 μm.

It should be noted that maximum height (Ry) is the maximum height specified by JIS B 0601-1994, surface can be used Roughness measuring instrument (is also same on maximum height described later (Ry) to determine.).

On the other hand, substrates perimeter portion 16 is made even surface preferred to feeling of high class is assigned, wherein being particularly preferably made Show the minute surface of gloss.

From the above point of view, the surface roughness (Rz) on the surface in substrates perimeter portion 16 is preferably less than 8 μm, wherein enters One step is preferably less than 6 μm, wherein more preferably less than 4 μm.

Surface on substrates perimeter portion 16, from from the viewpoint of above-mentioned, incidence angle, angle of reflection based on JIS Z8741 60 ° of mirror surface luster is preferably more than 85%, wherein more preferably more than 90%.

Upside peripheral part on substrates perimeter portion 16, such as when this front panel is used for into onboard navigation system etc., from Improve collision when to the security (referred to as " crashworthiness ") of human body from the viewpoint of, it is also possible to be made flexure plane.

(injection moulding)

In injection moulding, injection moulding resin material is projected to the shaping mold cavity of injecting molding die, with above-mentioned Resin material fills the shaping mold cavity, the resin material of the filling is cooled down in above-mentioned shaping mold cavity after solidifying it, opens Above-mentioned injecting molding die, takes out injection-molded article such that it is able to make panel substrates component.

As injecting molding die, in the same manner as existing common injecting molding die, use based on metal material Body and the injecting molding die that constitutes.

When the injection moulding for being filled in shaping mold cavity is solidified with resin material, formed with same with injecting molding die The injection-molded article of the corresponding surface configuration of the shape of the facing inner surface of die cavity (die surface).

Therefore, have around with many concavo-convex base materials display faces 15 to be formed for example to possess as described above The panel substrates component in the substrate surface portion in the substrates perimeter portion 16 formed by even surface, by by the injection mold of negative and positive Have the mould molding die cavity for being formed and be formed as corresponding with the form of this front panel, also, in the inner side table of injecting molding die Face (die surface), with the corresponding positions of above-mentioned base material display face 15 (also referred to as " the facial forming portion of display ") formed with Many concavo-convex corresponding surface configurations, at the position corresponding with above-mentioned substrates perimeter portion 16, (also referred to as " periphery is formed Portion ") form the surface configuration corresponding with even surface.

More specifically, the facial forming portion of the display of a mould upper inner surface in female mould forms the micro- of many It is thin concavo-convex, form minute surface in the way of surrounding around it and form periphery forming portion, can be formed in surface have it is many recessed Possesses the panel substrates component 11 in the substrates perimeter portion 16 formed by even surface around convex base material display face 15.

Used as the method to mould inner surface imparting concaveconvex shape, can include machining (can process for NC.), spray The known methods such as the chemical treatment such as the physical treatments such as sand, the etching process carried out using the etching solution comprising hydrofluoric acid etc..

It is preferred that being ground to the surface for being formed with relief pattern with grinding stone or abrasive cloth paper (sand paper) as needed.Separately Outward, can be ground using the grinding agent of liquid or paste-like as needed.

In above-mentioned sand-blast, by blowing such as particle such as aluminum oxide, carborundum, Buddha's warrior attendant powder together with air, so as to Enough form convex-concave surface.

In above-mentioned etching method, by using for example comprising inorganic acid, acetic acid, first such as hydrofluoric acid, ammonium fluoride, sulfuric acid, nitric acid The hydrofluoric acid system etching solution of the acid such as the organic acids such as acid, water and other additives such that it is able to form convex-concave surface.

＜ annealing operations ＞

After injection moulding, in order to mitigate deformation, the warpage produced by panel substrates component 11, can heat to be moved back Fire.

As method for annealing, can be carried out by known method.For example, 80 under air atmosphere, by in-furnace temperature Keep heated at~120 DEG C within 20 minutes~150 minutes.Now, in-furnace temperature is almost with product temperature It is mutually synthermal.

＜ painting process ＞

In painting process, the face side of panel substrates component 11 be viewing side coating transparent resin and form coating 20. That is, coating 20 is formed in the surface coating transparent resin of bellying 12, crest line 13 and clout flange part 14, such that it is able to make Coating is laminated panel substrates component.

(coating method)

As the coating method of transparent resin, for example, can include spin-coating method, Dipcoat method, spray-on process, slope flow coat cloth Method, scrape stick coating method, roll-type coating, gravure coating process, ink-jet method, silk screen print method, die coating methods, flow coat method, curtain coating transfer The known coating method such as method.

Wherein, from from the viewpoint of the thickness adjustment and differentiation coating of coating, it is preferred to use spray-on process, ink-jet method, intaglio plate Rubbing method, silk screen print method, for example, preferably use mechanical arm spraying etc., and transparent resin is carried out into spray application.

The adjustment of coated weight during for example, by being coated, the adjustment of coating number of times, the adjustment of coated object distance, painting The combination of any one adjustment or two or more adjustment in the adjustment of the translational speed of cloth pattern and ejiction opening, before can adjusting State the thickness of the coating 23 of the thickness and aforementioned substrates periphery 16 of the coating 22 of base material display face 15.

More specifically, for example when computer controls machinery arm is sprayed, operator to input in computer with to be coated with The coating weight and application frequency (repeating application frequency) at each position that the shape of panel substrates component, size are consistent etc., from And can be by the thickness adjustment of the coating 23 of the thickness and aforementioned substrates periphery 16 of the coating 22 of aforementioned substrates display face 15 It is desired thickness.

(feature of coating 20)

In this manufacture method, by the face side for making the bellying 12 of panel substrates component 11 as shown in Fig. 3-5 and Fig. 7 etc. Even if the crest line 13 of end edge portion is curve, crest line 13 has fillet with R shapes, thus, it is possible to by being normally coated with transparent resin The crest line 21 for making the face side end edge portion of coating 20 is curve.

Now, as shown in figure 5, in the crest line 21 of the end edge portion of coating 20, the height of face side origin of curve 21a and surface The difference h2 of the height of side End of Curve 21b is that direction apart from h2 prevents sharp edges from causing incised wound from security, for example in table From the viewpoint of be preferably 0.1~1.0mm, wherein be preferably more than 0.2mm or below 0.9mm, wherein be preferably more than 0.3mm Or below 0.8mm.

The average thickness of coating 20 is preferably 8 μm~25 μ from from the viewpoint of the viewpoint and economy for preventing orange peel m。

When the average thickness of coating 20 is more than 8 μm, it is prevented from producing orange peel, on the other hand, even if than 25 μ m-thicks, preventing Only the effect of orange peel will not also change, but economically burden becomes big.

Therefore, the average thickness of coating 20 be preferably 8 μm~25 μm, wherein more preferably more than 10 μm or 22 μm with Under, wherein more preferably more than 12 μm or less than 20 μm.

But, when being coated on panel substrates as described above, from from the viewpoint of improving antiglare effect, preferably Be, base material display face 15 coating 22 thickness maximum Amax be 8 μm~16 μm, wherein more preferably 9 μm with Go up or less than 15 μm, wherein more preferably more than 11 μm or less than 13 μm.

On the other hand, the maximum Bmax of the thickness of the coating 23 of aforementioned substrates periphery 16 is from preventing the viewpoint of orange peel from going out Hair be preferably 10 μm~25 μm, wherein more preferably more than 14 μm or less than 22 μm, wherein be more preferably 16 μm with Go up or less than 20 μm.

Additionally, it is preferred that around with the average value Aav and aforementioned substrates of the thickness of the coating 22 of above-mentioned base material display face 15 The mode that the average value Bav of the thickness of the coating 23 in portion 16 meets relation as Aav ＜ Bav is coated with transparent resin.

In this way, it is poor to have the thickness of coating 22 of base material display face 15 and the thickness of the coating 23 in substrates perimeter portion 16 It is different, make surface that there is the thickness of the coating 22 of many concavo-convex base material display faces 15 less than the coating 23 in substrates perimeter portion 16 Thickness such that it is able to maintain the antiglare effect at display facial 2, and prevent periphery 3 from producing orange peel.

It is preferred that being turned into the way of 10 μm~14 μm by the average value Aav of the thickness of the coating 22 of aforementioned substrates display face 15 Coating transparent resin.

When the average value Aav of the thickness of the coating 22 of base material display face 15 is less than 14 μm, can sufficiently be prevented Dizzy effect.On the other hand, when being more than 10 μm, the vividness of image can be further prevented to be damaged.In addition, can fully assign As painting film strength.

From the above point of view, the average value Aav of the thickness of the coating 22 of base material display face 15 is preferably 5 μm~10 μ M, wherein particularly preferably more than 6 μm or less than 9 μm, wherein particularly preferably more than 7 μm or less than 8 μm.

On the other hand, preferably 8 μm~30 μm are turned into the average value Bav of the thickness of the coating 23 in foregoing substrates perimeter portion 16 Mode be coated with transparent resin.

The average value Bav of the thickness of the coating 23 in substrates perimeter portion 16 be less than 30 μm when, be prevented from through when film Contraction, film are damaged.On the other hand, when being more than 8 μm, orange peel can further be prevented.

From the above point of view, the average value Bav of the thickness of the coating 23 in substrates perimeter portion 16 be preferably 8 μm~30 μm, Wherein particularly preferably more than 10 μm or less than 25 μm, wherein particularly preferably more than 12 μm or less than 20 μm.

It should be noted that the average value Aav of the thickness of the coating 22 of base material display face 15 and substrates perimeter portion 16 The average value Bav of the thickness of coating 23 embodiment can be determined like that as be described hereinafter, alternatively, it is also possible to use SEM Etc. (SEM) electron microscope, observes the section of coating 22,23, measures thickness more than any 3 positions, calculates its average value, So as to obtain.

And then, preferably with surface roughness RzA, the aforementioned substrates periphery 16 of the coating 22 of aforementioned substrates display face 15 The surface roughness RzB of coating 23, the said panel base material surface roughness RzC of the display face 12 of component 11 meet with Under the mode of relational expression (1) be coated with transparent resin.When RzC, RzA and RzB meet relationship below (1) or (2), antiglare effect Further improve, be preferred.

(1) surface roughness RzC ＞ surface roughnesses RzA=surface roughnesses RzB

(2) surface roughness RzC ＞ surface roughnesses RzA ＞ surface roughnesses RzB

(resin combination)

The resin combination (referred to as " coating resin composition ") of coating as long as transparent resin combination, just without spy Do not limit.Wherein, the resin combination for being used particularly preferable as hard coating material.

As hard coating resin composition, resin combination, the solvent seasoning of ultraviolet (UV) curability can be included The resin combination of curability, resin combination of Thermocurable etc..However, it is possible to suitably be applied using other transparent hard Cloth material.

Used as ultra-violet solidified resin combination, can include has more than 1 containing photopolymerizable compound The resin combination of the compound of optical polymerism functional group.

In addition, as the light for making photopolymerizable compound be irradiated when being polymerized, for example, can include luminous ray and ultraviolet Line, X-ray, electron beam, alpha ray, β rays and ionization radial line etc. as gamma-rays.

As above-mentioned photopolymerizable compound, gathering with acryloyl group, methylacryloyl etc. in molecule can be included The photopolymerization monomer of the olefinic double bond of conjunction property unsaturated bond, mercapto or epoxy radicals or pi-allyl etc., optical polymerism are oligomeric Thing or optical polymerism polymer.For example, it is poly- with optical polymerism oligomer or optical polymerism to be applied in combination photopolymerization monomer Compound.

As photopolymerization monomer, can include with 2 multifunctional lists of (i.e. 2 functions) above optical polymerism functional group Body.For example, diethylene glycol two (methyl) acrylate, DPG two (methyl) acrylate, trihydroxy methyl third can be included Alkane three (methyl) acrylate, tripropylene glycol two (methyl) acrylate, pentaerythrite three (methyl) acrylate, pentaerythrite Four (methyl) acrylate, dipentaerythritol six (methyl) acrylate, 1,6-HD two (methyl) acrylate, new penta 2 Alcohol two (methyl) acrylate, trimethylolpropane tris (methyl) acrylate, two trimethylolpropane four (methyl) acrylic acid Ester, dipentaerythritol five (methyl) acrylate, tripentaerythritol eight (methyl) acrylate, tetrapentaerythritol ten (methyl) third Olefin(e) acid ester, isocyanuric acid three (methyl) acrylate, isocyanuric acid two (methyl) acrylate, polyester three (methyl) acrylic acid Ester, polyester two (methyl) acrylate, bis-phenol two (methyl) acrylate, two glycerine four (methyl) acrylate, adamantyl Two (methyl) acrylate, isobornyl two (methyl) acrylate, bicyclopentane two (methyl) acrylate, tristane two (methyl) acrylate, two trimethylolpropane four (methyl) acrylate, by they with PO, EO etc. it is modified obtained from thing Matter.

As optical polymerism oligomer, multifunctional oligomer more than preferably 2 functions.Polyethers (methyl) can for example be included Acrylate, polyalcohol (methyl) acrylate, melamine (methyl) acrylate, isocyanates (methyl) acrylate, Epoxy (methyl) acrylate, polyester (methyl) acrylate, carbamate (methyl) acrylate, polyester-carbamic acid Ester (methyl) acrylate etc..

As optical polymerism polymer, carbamate (methyl) acrylate, isocyanates (methyl) third can be included Olefin(e) acid ester, polyester-urethane (methyl) acrylate, epoxy (methyl) acrylate etc..

As ultra-violet solidified resin combination, or contain Photoepolymerizationinitiater initiater, the Photoepolymerizationinitiater initiater Absorb ultraviolet to be excited, activate and cause polymerisation, cause the resin combination of the curing reaction of uv curing resin Thing.

As Photoepolymerizationinitiater initiater, for example, can include benzil, benzophenone, its derivative, thioxanthene ketone class, benzil Dimethyl ketal class, Alpha-hydroxy alkylbenzene ketone, alpha-hydroxyacetophenone class, hydroxyl ketone, amino alkylphenone class, acyl group oxidation Phosphine etc..Wherein, Alpha-hydroxy alkylbenzene ketone is not susceptible to xanthochromia in solidification, can obtain transparent solidfied material, so it is preferred that. In addition, amino alkylphenone class possesses reactivity very high, the solidfied material of excellent hardness can be obtained, so it is preferred that.Above-mentioned light Polymerization initiator can be used alone only a kind or be applied in combination two or more.

Addition on Photoepolymerizationinitiater initiater, relative to the mass parts of curable resin 100, preferably adds 0.1 mass parts ~5 mass parts.

In the case of ultra-violet solidified resin combination, for example, the resin combination is coated into panel substrates table Face, then, in order that the resin combination dry and carrying out heating dries it, evaporate solvent, then to the resin combination The light such as thing irradiation ultraviolet radiation, make photopolymerizable compound be polymerized (crosslinking), so that curing of coatings.But, it is not limited to the party Method.

The resin combination of solvent seasoning curability be thermoplastic resin etc. only by make during coating in order to adjust solid into The solvent seasoning for dividing and adding just can turn into resin combination as overlay film.

As solvent-dry type resin, the composition comprising transparent polyimide precursor varnish etc. can be included.

In addition, as foregoing hot curing resin composition, such as can include and contain polyurethane series resin, asphalt mixtures modified by epoxy resin Fat, phenolic resin, urea resin, diallyl phthalate resin, melmac, guanamine resin, unsaturated polyester (UP) It is the heat-curing resins such as resin, amino-alkyd resin, melamine-urea cocondensation resin, silicones, polyorganosiloxane resin Composition.

Hot curing resin composition can also as needed contain and for example be crosslinked in addition to containing heat-curing resin The curing agent such as agent, polymerization initiator, polymerization accelerant, solvent, viscosity modifier, extender pigment etc..

Used as curing agent, generally, isocyanates, organic sulfonic acid etc. are used for polyester based resin, polyurethane series resin, and amine is commonly used In epoxy resin, the radical initiator such as the peroxide such as methyl ethyl ketone peroxide, azo diisobutyl ester is usually used in unsaturated poly- Ester system resin.

In the middle of above, from from the viewpoint of marresistance, being coated on pencil hardness when on makrolon base material turns into H Coating resin composition above is preferred.

In addition, the wetability (JIS K 6768) of coating resin composition is preferably below 22.6dyn, on coating resin The viscosity of composition, it is preferred that the viscosity determined with E types viscosimeter at 25 DEG C of temperature is 20mPs~35mPs.

From the above point of view, the base resin of coating resin composition is particularly preferably acrylic resin, amino first Acid ester resin.Wherein, if from from the viewpoint of case hardness, particularly preferred acrylic resin.

In above-mentioned coating resin composition, can as needed containing existing known dispersant, surfactant, anti-quiet Electric agent, silane coupling agent, thickener, anti-coloring agent, colouring agent (pigment, dyestuff), defoamer, levelling agent, fire retardant, ultraviolet Absorbent, bonding imparting agent, polymerization inhibitor, antioxidant, surface modifier, lubricant, antioxidant, anti-impact modifier etc. are each Plant additive.

＜ cutting process ＞

In this manufacture method, it is a feature to implement cutting process after painting process.

In cutting process, for example, the clout portion that coating is laminated panel substrates component is cut in the way of as regulation shape Divide i.e. clout flange part 14.

For example, as shown between the vertical dotted line of Fig. 5, in the panel substrates table of the crest line 13 of the bellying 12 of component 11 Surface side End of Curve 13b or specific surface side End of Curve 13b are near the position of face side origin of curve 13a, particularly from surface End of Curve 13b in side plays the position within position within the close 0.2mm of face side origin of curve 13a, especially 0.1mm, Coating stacking panel substrates are vertically cut off to cut clout flange part 14 with component such that it is able to make front panel 1.

In addition, as shown between the vertical dotted line of Fig. 7, in the panel substrates table of the crest line 13 of the bellying 12 of component 11 Surface side End of Curve 13b or specific surface side End of Curve 13b are near the position of face side origin of curve 13a, particularly from surface End of Curve 13b in side plays the position within position within the close 0.2mm of face side origin of curve 13a, especially 0.1mm, Coating stacking panel substrates are vertically cut off to cut clout flange part 14 with component such that it is able to make front panel 1.

In this way, in panel substrates the face side End of Curve 13b or specific surface of the crest line 13 of the bellying 12 of component 11 Side End of Curve 13b is near the position of face side origin of curve 13a or the rear side End of Curve 13c or the ratio back of the body of crest line 13 Surface side End of Curve 13c vertically cuts off coating stacking panel substrates component near the position of face side origin of curve 13a, Face side end edge portion so as to for example make coating 20 as shown in Figure 8 has fillet, while can be in the face side of coating 20 The perpendicular end surface of coating 20 and panel substrates 10 is continuously formed below end edge portion.That is, the section of coating 20 at least will not Upward, the end edge portion therefore, it is possible to make front panel 1 seems not white.

As the method that the panel substrates that will be laminated coating 20 are vertically cut off with component 11, can include and use end mill Knife is cut using rotation, is carried out punching press cut-out etc. using cutter.

＜ printing process ＞

This manufacture method can as needed possess printing process.

For example, shielding part can be formed around base material display face 15, i.e., in the back side and base material of panel substrates Implement printing, such as black printing in the corresponding position of periphery 16.

Printing process can the optionally importing before and after painting process.

Alternatively, it is also possible to set minute surface printing layer by minute surface printing.

By setting minute surface printing layer, mirror effect can be assigned, so as to assign good metal-like, can assigned excellent Different design, so as to assign feeling of high class.

The printer's ink used in being printed for minute surface, it is possible to use in acrylic resin, carbamate resins, polyester The metal dusts such as aluminium powder, silver powder are compounded in the synthetic resin such as resin makes its printed silver ink disperseed etc..

As the printing process of this printer's ink, it is possible to use silk-screen printing, hectographic printing, intaglio printing, flexible printing Etc. print process, wherein, silk-screen printing is suitable.

Alternatively, it is also possible to implement white printing in above-mentioned minute surface printing layer, white printed layer is set.

The small pin hole of minimal residue, prevents the transmission of light in the minute surface printing layer that the white is printed on the inside of for landfill, The metal-like for suppressing to be obtained by minute surface printing is reduced because of pin hole, it is possible to use compounded with the common printing of white color agents Ink, is printed by silk-screen printing etc..

Alternatively, it is also possible to implement the transparent printing of dumb light or the transparent printing of delustring.

As the printer's ink used in this purposes, it is preferred that with acrylic resin, carbamate resins, gather The lucites such as ester resin as carrier, the powder of the delustring such as compounding silica powder, alumina powder thereto The transparent printer's ink of evaporation drying type or ultraviolet hardening obtained from disperseing it.

As the printing process of this transparent printing, it is possible to use silk-screen printing, hectographic printing, intaglio printing, flexible print Print processes such as brush etc..

＜ purposes ＞

This front panel is used directly for the front panel of smart mobile phone, tablet terminal, portable game device etc., Yi Jiche Carry the guidance panel of navigation system, industrial machinery etc..

The explanation ＞ of ＜ sentences

When in this specification, being expressed as " X~Y " (X, Y are arbitrary numeral), in case of no particular description, no The only implication including " more than X and below Y ", but also the implication including " preferably greater than X " or " preferably smaller than Y ".

In addition, when being expressed as " more than X " (X is arbitrary numeral) or " below Y " (Y is arbitrary numeral), also including purport In " preferably greater than X " or the intention of " preferably smaller than Y ".

In addition, in this specification, " base resin " refers to, the most tree of content in the middle of the resin of resin combination is constituted Fat, usually constitutes more than the 50 mass %, wherein especially more than 80 mass %, wherein especially of the resin of the resin combination It is the resin of more than 90 mass % (including 100 mass %).Wherein, resin combination include 2 kinds of base resins when, its total amount into It is above-mentioned mass ratio.

In addition, in this specification, " face side " refers to, and the side that the display light from front panel sends, it is before observing The side of the display of panel.

" rear side " refers to, the side opposite with foregoing " face side ", refers to the side that the display light of front panel is injected.

" transparent " refers to be not limited to water white transparency, also including tinted clear.

Embodiment

Hereinafter, following embodiments are based further on and comparative example describes the present invention in detail.

The ＞ of ＜ embodiments 1

Prepare following die for injection molding, the die for injection molding has the shape with Vehicular display device front panel The die cavity of corresponding shape, the die surface corresponding with the viewing side surface of display face 2 is texture finished surface, with week The corresponding die surface in surface for enclosing portion 3 is minute surface.

Prepare the injection moulding resin material containing resin based on makrolon.By the injection moulding resinous wood Material is filled into the die cavity of above-mentioned mould and cools and solidifies respectively, so as to by the panel substrates molding component of makrolon.

Then, in-furnace temperature is kept being annealed for 700 minutes at 100 DEG C under air atmosphere, obtains panel substrates With component A (sample).

Resulting panel substrates component (sample) is the bellying 12 of the thickness 0.4mm for possessing fort shape and in drum Go out portion 12 outer circumference possess low single order clout flange part 14 panel substrates component 11, bellying 12 be by make as Area portions shown in (1) of Fig. 2 during length direction side-looking equivalent to front panel 1 overlook front panel considerable part such as Fig. 2 (2) shown is that viewing side is bloated with 0.4mm in upper surface side, the crest line 13 of the face side end edge portion of bellying 12 is in Curve, in the crest line 13 of the face side end edge portion of the bellying 12, height and the face side curve of face side origin of curve 13a The difference h1 of the height of terminal 13b is as shown in table 1 0.4mm.

In addition, as shown in figure 4, being formed with when surface has many concavo-convex base material display faces 15 and overlooks to surround The mode of base material display face 15 is located at the component in the substrates perimeter portion 16 formed by even surface around it, and base material shows The concavo-convex maximum height (Ry) for showing the surface of face 15 is 22 μm, and the concavo-convex maximum height (Ry) on the surface of periphery is 4 μ m。

And then, black printing is implemented by silk-screen printing at the back side in substrates perimeter portion 16.

Then, the surface for being sprayed at panel substrates component (sample) using mechanical arm is coated with transparent resin, forms thickness 18 μm of coating 20, so as to make coating stacking panel substrates component.

Now, by the spray amount of computer input each position sprayed to control machinery arm and application frequency is repeated, from And adjust the thickness of the coating 23 of the thickness and aforementioned substrates periphery 16 of the coating 22 of base material display face 15 like that as shown in table 1 Degree.In the crest line 21 of the end edge portion of coating 20, the height of face side origin of curve 21a and the height of face side End of Curve 21b Difference h2 as shown in table 1 be 0.4mm.

As above-mentioned transparent resin A, use acrylic resin (viscosity 25mPs).The viscosity is at 25 DEG C of temperature The value determined with E types viscosimeter.

In addition, the pencil hardness of coating surface is 2H in all embodiments, comparative example.

Then, cut using rotation by using end mill(ing) cutter, in the panel substrates rib of the bellying 12 of component 11 The face side End of Curve 13b of line 13, by coating stacking panel substrates vertically cut off to cut clout flange part 14 with component, from And make front panel (sample).

＜ embodiments 2,3 ＞

In embodiment 1, adjustment spray amount, repetition application frequency, so that the thickness of each coating is changed as shown in table 1, except this Outside, front panel (sample) is made similarly to Example 1.

The ＞ of ＜ comparative examples 1

Prepare the polycarbonate plate with the same thickness of bellying 12 of embodiment 1, use transparent tree similarly to Example 1 Fat, forms the coating of 18 μm of thickness, makes coating stacking panel substrates component.

Then, as shown in figure 9, being cut using the end mill(ing) cutter for assigning R shapes in the way of cutting off end edge portion as R chamfering shapes Coating stacking panel substrates component is cut, front panel (sample) is made.

The ＞ of ＜ comparative examples 2

By as with the panel substrates identical shape of front panel (sample) that obtains in embodiment 1 in the way of cut panel After base material component, using transparent resin similarly to Example 1, the coating of 18 μm of thickness is formed as shown in Figure 10, before making Panel (sample).

The ＞ of ＜ comparative examples 3

Prepare the polycarbonate plate with the same thickness of bellying 12 of embodiment 1, use transparent tree similarly to Example 1 Fat forms the coating of 18 μm of thickness, makes coating stacking panel substrates component.

Then, as shown in figure 11, coat layer is cut using end mill(ing) cutter in the way of cutting off end edge portion as perpendicular end surface Folded panel substrates component, makes front panel (sample).

(maximum of the thickness of coating and the measure of average value)

For metallic plate, coating is identically formed with embodiment, uses induction film thickness measuring device (Kett " the PERMASCOPE MPOD " of Electric Laboratory manufactures), the thickness of the coating of any 3 positions is measured, by it Average value is denoted as average value Aav, Bav respectively, and the maximum in them is denoted as into Amax, Bmax respectively.

Now, the bellying for the average value Bav of the thickness of coating 42 being produced as the ratio of coating in the end edge portion of coating The thickness a of part in the inner part.

(the dimensional accuracy evaluation of outward appearance)

The front panel (sample) for visually being made in observation embodiment, comparative example, the chi that resin accumulates is evaluated by following standard Very little precision.

Zero (good)：The thickness c that bloats of coating end edge portion side is less than 50 μm, and resin accumulates unobvious.

× (poor)：The thickness c that bloats of coating end edge portion side is more than 50 μm, and resin accumulates in side significantly sagging.

(gloss appearance evaluation)

The front panel (sample) for visually being made in observation embodiment, comparative example, gloss appearance is evaluated by following standard.

Zero (good)：The gloss in the whole face of front panel is uniform during vertical view.

× (poor)：The gloss of the peripheral part of vertical view declines.

(safety evaluatio)

Front panel (sample) cut-out that will be made in embodiment, comparative example, for the ridge line section measurement microscope in section The value R of fillet specified in JIS B 0701-1987, security is evaluated according to following standard.

Zero (good)：R is more than 0.2

× (poor)：R is less than 0.2

【Table 1】

As comparative example 2 cut panel substrates component after be coated with transparent resin when, also confirm, cutting gas into Foreign matter during for application and produce coating bad.

It can be seen from the result of the test that above-described embodiment and inventor are carried out so far, when making panel substrates component, system Work possesses the panel substrates component of following structure：Possesses clout flange on the outside of the bellying that upper surface side is bloated Portion, make the structure that the crest line of the face side end edge portion of the bellying formed for curve, on the surface of the panel substrates component It is coated with transparent resin and forms coating, so that coating stacking panel substrates component is formed, and then in the panel substrates component Bellying crest line rear side End of Curve or than rear side End of Curve near the position of the face side origin of curve or Be laminated for aforementioned coatings near the position of the face side origin of curve by the face side End of Curve or specific surface side End of Curve of crest line Panel substrates are vertically cut off with component to cut during clout part, can be made the end edge portion of aforementioned coatings and be had fillet, are made at it The end face of the continuous said panel base material in lower section turns into perpendicular end surface, therefore is also prevented from face side end edge portion and bleaches, and The end edge portion of coating can be made not produce resin to accumulate.

In addition, it can be seen from the result of the test that above-described embodiment and inventor are carried out so far, by the painting for making display face The thickness of layer has difference with the thickness of the coating of periphery, surface is had the thickness of coating of many concavo-convex display faces It is relatively small such that it is able to maintain the antiglare effect at display face, and prevent even surface from producing orange peel.Understand from above-mentioned sight Point sets out, and the average value Bav of the coating layer thickness of periphery shows the coating layer thickness of face preferably than 10 μ m-thicks and for less than 30 μm Average value Aav be preferably 5 μm~10 μm.

Claims

1. a kind of manufacture method of front panel, it is the manufacture method of the front panel for possessing coating on the surface of panel substrates, its It is characterised by, it possesses：

Painting process, in the operation, forms coating, and make this in the surface coating transparent resin of panel substrates component The crest line of the end edge portion of coating is curve, so as to make coating stacking panel substrates component, the panel substrates have with component Standby following structure：Bloated to upper surface side with vertical view front panel considerable part when making vertical view equivalent to front panel and formed Bellying and make the crest line of the face side end edge portion of the bellying be the structure of curve；And

Excision operation, in the operation, the crest line of the bellying of the panel substrates component rear side End of Curve or Than rear side End of Curve near the position of the face side origin of curve or the face side End of Curve or specific surface lateral curvature of crest line Coating stacking panel substrates are vertically cut off to cut clout by line terminal near the position of the face side origin of curve with component Part, so that the end edge portion of the coating has fillet, and the end face of the continuous panel substrates turns into vertical thereunder Straight end face.

2. the manufacture method of front panel according to claim 1, it is characterised in that the average thickness for making coating is 8~25 μ In m, also, the crest line of end edge portion in the coating, make the height of the face side origin of curve and the height of face side End of Curve The difference of degree is that the distance in table on direction is 0.1~1.0mm.

3. the manufacture method of front panel according to claim 1 and 2, it is characterised in that in the panel substrates component Bellying face side end edge portion crest line in, make the height of the face side origin of curve and face side End of Curve height it Difference is that the distance in table on direction is 0.1~1.0mm.

4. the manufacture method of the front panel according to any one of claims 1 to 3, it is characterised in that the panel substrates On surface there are many concavo-convex base materials to show the substrates perimeter portion for possessing around face and being formed by even surface with component,

In the painting process, the maximum Amax with the coating layer thickness of base material display face is as 8 μm~16 μm and described The maximum Bmax of the coating layer thickness in substrates perimeter portion is that 10 μm~25 μm of mode is coated with transparent resin.

5. the manufacture method of front panel according to claim 4, it is characterised in that make the coating of the base material display face The average value Aav of thickness is 10 μm~14 μm.

6. the manufacture method of the front panel according to any one of Claims 1 to 5, it is characterised in that the front panel is The front panel used in touch panel display used for vehicle-carrying equipment.