CN103896481A - Manufacturing method of toughened glass substrate used for forming touch panel - Google Patents
Manufacturing method of toughened glass substrate used for forming touch panel Download PDFInfo
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- CN103896481A CN103896481A CN201310741449.9A CN201310741449A CN103896481A CN 103896481 A CN103896481 A CN 103896481A CN 201310741449 A CN201310741449 A CN 201310741449A CN 103896481 A CN103896481 A CN 103896481A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Abstract
The invention discloses a manufacturing method of a toughened glass substrate used for forming a touch panel having good production rate. The touch panel is the glass cover integrated-type touch panel. The manufacturing method is characterized in that one substrate can be used to form a plurality of glass cover integrated-type touch panel; the chemical strengthening process is carried out on the glass substrate(100) having the short side with the length more than 1000mm; the glass substrate (100) after the chemical strengthening can be cut and divided into a plurality of toughened glass substrate (10); the champfering process can be carried out on the end surfaces (11) of the plurality of toughened glass substrate (10).
Description
Technical field
The present invention relates to the manufacture method of touch panel hardened glass substrate, specially refer to the manufacture method of the hardened glass substrate that is used to form the one-piece type touch panel of lens.
Background technology
In the portable equipment such as smart mobile phone, dull and stereotyped terminal, the touch panel operating with the lens substrate of finger tip touching indicating meter is extensively popularized.Figure 11 is the sectional view of existing touch panel.As shown in figure 11, existing touch panel has and utilizes optical clear caking agent (OCA:Optical Clear Adhesive) 3 by lens substrate 1 and sensor glass substrate (being formed with the glass substrate of sensor) 4 structures that fit together.
On the circumference of the lens substrate 1 being formed by chemically reinforced glass, be formed with photomask 2.On the other hand, on sensor glass substrate 4, be formed with nesa coating 5a, 5b, metal wiring 6, organic insulator 7, protective layer 8 is sensor.And the photomask forming surface of lens substrate 1 is relative with the sensor forming surface of sensor glass substrate 4, and fit together by optical clear caking agent 3.
With respect to this, lens substrate be formed with sensor and by lens substrate and sensor glass substrate integrated touch panel (the one-piece type touch panel of so-called lens) just attracted attention.Figure 12 is the sectional view of the one-piece type touch panel of lens.In the one-piece type touch panel of the lens shown in Figure 12, without optical clear caking agent 3 and the sensor glass substrate 4 of the touch panel shown in Figure 11, therefore can realize slimming, lightweight.
Chilled glass is difficult to cut off with nonreinforcement glassy phase ratio.Therefore, in the manufacturing process of the lens substrate 1 adopting at existing touch sensor as shown in Figure 11, cutting into after shape of product, carrying out chemical enhanced.On the other hand, in the manufacturing process of the lens substrate 1 adopting at the one-piece type touch panel of lens as shown in Figure 12, for the viewpoint of enhancing productivity, at medium-sized glass substrate or minor face be under the state of large-size glass substrate more than 1000mm, carry out chemical enhanced.When forming after photomask 2, nesa coating 5a, 5b, metal wiring 6, organic insulator 7, protective layer 8 on the medium-sized and even large-size glass substrate after this is chemical enhanced, be cut to shape of product.
But, in patent documentation 1, disclose and after shape of product, glass substrate has been carried out chemical enhancedly being cut to, this glass substrate is configured on conveyance substrate, carry out once the manufacture method of the one-piece type touch panel of lens of sensor formation.
But, with after being cut to shape of product to glass substrate carry out chemical enhanced compared with, under the state of large-size glass substrate, carry out chemical enhanced mode productivity more outstanding.
Patent documentation 1: TOHKEMY 2011-197708 communique
Inventor, for the manufacture method of hardened glass substrate that is used to form the one-piece type touch panel of lens, has proposed following problem.
For above-mentioned medium-sized and even large-size glass substrate after chemical enhanced, require diversified size.Therefore, all need chemical enhanced equipment for every kind of size, exist the problem of productivity variation.
Summary of the invention
The present invention completes just in view of the above problems, and its object is to provide the manufacture method of the hardened glass substrate that is used to form the one-piece type touch panel of lens that a kind of productivity is good.
The manufacture method of the hardened glass substrate that is used to form touch panel that mode 1 of the present invention relates to is, can form the one-piece type touch panel of multiple lenss with a substrate, wherein, the manufacture method that is used to form the hardened glass substrate of touch panel described in possesses following step: the glass substrate that is rectangular shape more than 1000mm to the length of minor face carries out chemical enhanced step; Described glass substrate after chemical enhanced is divided into the step of multiple hardened glass substrates; And the end face of described multiple hardened glass substrates is carried out to the step of chamfer machining.
The manufacture method of the hardened glass substrate that is used to form the one-piece type touch panel of lens that a kind of yield rate is high, productivity is good can be provided thus.
The manufacture method of the hardened glass substrate that is used to form touch panel that mode 2 of the present invention relates to is that, in the mode 1 of foregoing invention, the bond length of the glass substrate of described rectangular shape is below 2200mm.
The manufacture method of the hardened glass substrate that is used to form touch panel that mode 3 of the present invention relates to is, in the mode 1 or 2 of foregoing invention, after carrying out chemical enhanced step, before the step cut apart, also possesses the step of the facet damage that checks the described glass substrate after chemical enhanced.The manufacture method of the hardened glass substrate that is used to form the one-piece type touch panel of lens that a kind of yield rate is higher, productivity is good can be provided thus.
The manufacture method of the hardened glass substrate that is used to form touch panel that mode 4 of the present invention relates to is, in the mode 3 of foregoing invention, in the situation that detecting described facet damage, to remove described facet damage in the step of cutting apart.The manufacture method of the hardened glass substrate that is used to form the one-piece type touch panel of lens that a kind of yield rate is high, productivity is good can be provided thus.
The manufacture method of the hardened glass substrate that is used to form touch panel that mode 5 of the present invention relates to is, in any one of the mode 1～4 of foregoing invention, the average surface roughness Ra that carries out the end face of the described hardened glass substrate after the step of chamfer machining is below 1 μ m.The manufacture method of the hardened glass substrate that is used to form the one-piece type touch panel of lens that a kind of yield rate is higher, productivity is good can be provided thus.
The manufacture method of the hardened glass substrate that is used to form touch panel that mode 6 of the present invention relates to is, in the mode 5 of foregoing invention, the average surface roughness Ra that carries out the end face of the described hardened glass substrate after the step of chamfer machining is more than 0.05 μ m.
The manufacture method of the hardened glass substrate that is used to form touch panel that mode 7 of the present invention relates to is, in any one of the mode 1～6 of foregoing invention, carrying out in the step of chamfer machining, utilizes grinding to carry out chamfer machining.As the preferred grinding of chamfer machining.
The manufacture method of the hardened glass substrate that is used to form touch panel that mode 8 of the present invention relates to is, in any one of the mode 1～7 of foregoing invention, carrying out in chemical enhanced step, form at described glass substrate: upper layer and back layer, it has residual compression stress; And middle layer, its residual tensile stress CT in inside more than thering is 5MPa between this upper layer and back layer and below 50MPa.
The manufacture method of the hardened glass substrate that is used to form touch panel that mode 9 of the present invention relates to is, in any one of the mode 1～8 of foregoing invention, the rupture stress that the accumulative total failure probability that carries out the end face of the described hardened glass substrate after the step of chamfer machining is 0.1% is more than 70MPa and below 400MPa.
The manufacture method of the hardened glass substrate that is used to form touch panel that mode 10 of the present invention relates to is, in any one of the mode 1～9 of foregoing invention, the thickness t of described hardened glass substrate is 0.3～1.1mm.
According to the present invention, can provide the manufacture method of the hardened glass substrate that is used to form the one-piece type touch panel of lens that a kind of productivity is good.
Accompanying drawing explanation
Fig. 1 is the sectional view of the one-piece type touch panel of lens that relates to of the first embodiment of the present invention.
Fig. 2 is the sectional view of the hardened glass substrate 10 that adopts of lens substrate 1 that the first embodiment of the present invention relates to.
Fig. 3 is the schematic diagram of the distribution of the residual stress of the hardened glass substrate 10 that illustrates that lens substrate 1 that the first embodiment of the present invention relates to adopts.
Fig. 4 is the schema of the manufacture method for the hardened glass substrate that is used to form the one-piece type touch panel of lens that the first embodiment of the present invention relates to is described.
Fig. 5 illustrates the figure that cuts out the mode that cuts out of the medium-sized glass substrate (hardened glass substrate) 10 of G2 size (long limit 470mm × minor face 370mm) from the large-size glass substrate 100 of G6 size (long limit 1850mm × minor face 1500mm).
Fig. 6 is the side-view illustrating for the end face of hardened glass substrate 10 being carried out to the revolving wheel of chamfer machining.
Fig. 7 A is the schematic plan that the large-size glass substrate of facet damage occurs in chemical enhanced operation.
Fig. 7 B forms at sensor the schematic plan that the large-size glass substrate of the thermal crack take facet damage as starting point occurs in operation.
Fig. 8 is the schema of the manufacture method for the hardened glass substrate that is used to form the one-piece type touch panel of lens that the second embodiment of the present invention relates to is described.
Fig. 9 illustrates the figure that cuts out the mode that cuts out of the medium-sized glass substrate (hardened glass substrate) 10 of G2 size (long limit 470mm × minor face 370mm) from the large-size glass substrate 100 of G6 size (long limit 1850mm × minor face 1500mm).
Figure 10 is the vertical schematic diagram of putting four-point bending test device.
Figure 11 is the sectional view of existing touch panel.
Figure 12 is the sectional view of the one-piece type touch panel of lens.
Label declaration
1: lens substrate;
2: photomask;
5a, 5b: nesa coating;
6: metal wiring;
7: organic insulator;
8: protective layer;
10: hardened glass substrate;
11: end face;
12: surface;
13: upper layer;
14: the back side;
15: back layer;
17: middle layer;
20: revolving wheel;
21: groove;
100: large-size glass substrate
Embodiment
Below, explain with reference to accompanying drawing applying concrete embodiment of the present invention.But, the present invention is not limited to following embodiment.And in order to make the explanation clear, following record and accompanying drawing are suitably simplified.
(embodiment 1)
First,, with reference to Fig. 1, the one-piece type touch panel of lens that the first embodiment of the present invention relates to is described.Fig. 1 is the sectional view of the one-piece type touch panel of lens that relates to of the first embodiment of the present invention.Fig. 1 is the figure that reversion obtains up and down that makes Figure 12.The one-piece type touch panel of lens of Fig. 1 is the touch panel of electrostatic capacitance mode.
As shown in Figure 1, on the circumference of the lens substrate 1 being formed by chemically reinforced glass, be formed with the photomasks such as black matrix film 2.The mode that both sides on photomask 2 are visually observed with the outside (lower face side of the lens substrate 1 Fig. 1) of avoiding from lens substrate 1 is formed with pair of metal distribution 6.In addition, the color of photomask 2 is not particularly limited, for example, can be also white.
Be formed with nesa coating 5a, 5b at the central part of lens substrate 1.Nesa coating 5a extends and arranges along the x direction of principal axis of Fig. 1, and nesa coating 5b extends and arranges along the y direction of principal axis of Fig. 1., nesa coating 5a, 5b extend setting in orthogonal mode., in the plane, nesa coating 5a, 5b are formed as reticulation (not shown).In addition, two nesa coating 5b are only shown in Fig. 1, but in fact nesa coating 5a, 5b all arrange multiple.At this, as shown in Figure 1, nesa coating 5a forms in the mode between the metal wiring 6 across both sides.
As shown in Figure 1, organic insulator 7 is in order to make nesa coating 5a, 5b insulated from each other and be formed between nesa coating 5a, 5b.
Then,, with reference to Fig. 2, Fig. 3, the structure of the hardened glass substrate 10 that lens substrate 1 is adopted describes.Fig. 2 is the sectional view of the hardened glass substrate 10 that adopts of lens substrate 1 that the first embodiment of the present invention relates to.In Fig. 2, the direction of arrow illustrates the action direction of residual stress, and the size of arrow illustrates the size of stress.As shown in Figure 2, hardened glass substrate 10 there is upper layer 13 and back layer 15 and be arranged on upper layer 13 and back layer 15 between middle layer 17.In upper layer 13 and back layer 15 because following chemical enhanced method remains stress under compression.And, as its retroaction, remain tensile stress in middle layer 17.
Fig. 3 is the schematic diagram of the distribution of the residual stress of the hardened glass substrate 10 that illustrates that lens substrate 1 that the first embodiment of the present invention relates to adopts.
As shown in Figure 3, exist at upper layer 13 and the residual stress under compression (>0) of back layer 15 trend reducing gradually to inside from surface 12 and the back side 14 of hardened glass substrate 10.And, exist from the inside of glass the trend reducing gradually towards surface 12 and the back side 14 in middle layer 17 residual tensile stress (>0).
In Fig. 3, maximum residual compression stress (surface compression stress) in CS presentation surface layer 13, back layer 15 (>0), CT represents the residual tensile stress in the inside in middle layer 17 (mean value of the residual tensile stress in middle layer 17) (>0), the thickness of DOL presentation surface layer 13 and back layer 15.Thickness using t as hardened glass substrate 10, the thickness in middle layer 17 is t-2 × DOL.
And, the residual tensile stress CT(MPa in inside of hardened glass substrate) conventionally can be by measuring surface compression stress CS(MPa) and the thickness DOL(μ of upper layer 13 and back layer 15 m) and according to the thickness t of this measured value and hardened glass substrate (μ m) uses formula 1 below to calculate.
CT=(CS × DOL)/(t-2 × DOL) ... formula 1
The thickness DOL of maximum residual compression stress CS, inner residual tensile stress CT, upper layer 13 and back layer 15 can regulate according to intensive treatment condition.The in the situation that of chemical enhanced method, for example, due to glass-impregnated is carried out to ion-exchange in treatment solution (, KNO3 melting salt), therefore can regulate according to the concentration for the treatment of solution, temperature, dipping time etc.
Preferably the thickness t (mm) of hardened glass substrate 10 is 0.3～1.1mm.The in the situation that of chemically reinforced glass, thickness t (mm) is if exceed 1.1mm, and the quality of substrate becomes large, has offset the one-piece type light-weighted advantage causing of lens.On the other hand, if thickness t (mm) is less than 0.3mm, be difficult to glass to implement chemical enhanced processing.And then preferably the thickness t (mm) of hardened glass substrate 10 is 0.4～0.7mm.
But, what present embodiment related to the be used to form one-piece type touch panel of lens hardened glass substrate 10 be that more than 1000mm large-size glass substrate is chemical enhanced and its cut-out is divided into multiple obtains by minor face., expose the middle layer 17 with inner residual tensile stress CT at the end face of hardened glass substrate 10.Therefore, inner residual tensile stress CT is excessive, and crackle easily stretches from the end face of hardened glass substrate 10, and the processing that sensor forms in operation becomes difficult.And inner residual tensile stress CT more cut-out itself is also more difficult.Therefore, preferably inner residual tensile stress CT is below 50MPa.And more preferably inner residual tensile stress CT is below 35MPa, and then is preferably below 30MPa.In addition, more than the residual tensile stress CT in described inside is preferably 5MPa.
Then,, with reference to Fig. 4, the manufacture method of the hardened glass substrate that is used to form the one-piece type touch panel of lens that present embodiment is related to describes.Fig. 4 is the schema of the manufacture method for the hardened glass substrate that is used to form the one-piece type touch panel of lens that present embodiment relates to is described.In Fig. 4, except the manufacturing process (step S1～S3) with the hardened glass substrate that is used to form the one-piece type touch panel of lens shown in solid line, also record in the lump flow process after this (step S4～S8) shown in broken lines.And, in Fig. 4, also show in the lump the glass substrate size in each operation together with manufacturing process.
First, as shown in Figure 4, the minor face after end face chamfering is processed is that large-size glass substrate more than 1000mm carries out chemical enhanced (step S1).As large-size glass substrate, can adopt the glass substrate of the rectangular shape that is called as so-called G6 size (long limit 1850mm × minor face 1500mm).It is large-size glass substrate more than 1000mm that the present invention is applicable to minor face, therefore as large-size glass substrate, also can adopt the glass substrate of G5 size (long limit 1200mm × minor face 1000mm).Certainly as long as minor face is large-size glass substrate more than 1000mm, can be also the size beyond G5, G6.The length of the minor face of described large-size glass substrate is preferably below 2200mm.
Then, the large-size glass substrate after chemical enhanced is cut off, be divided into multiple medium-sized glass substrates (step S2).As medium-sized glass substrate, can list so-called G1 size (long limit 400mm × minor face 300mm), G2 size (long limit 470mm × minor face 370mm), G3 size (long limit 650mm × minor face 550mm), G4 size (long limit 880mm × minor face 680mm).These sizes are all subject to sensor and form the restriction on the device in operation.Medium-sized glass substrate is the glass substrate that long limit is less than the rectangular shape of 1000mm, as long as forming the one-piece type touch panel of multiple lenss, can be also the size beyond above-mentioned size.In addition, also can before step S2, check the end face of the large-size glass substrate after chemical enhanced.
At this, with reference to Fig. 5, the object lesson of description of step S2.Fig. 5 illustrates the figure that cuts out the mode that cuts out of the medium-sized glass substrate (hardened glass substrate) 10 of G2 size (long limit 470mm × minor face 370mm) from the large-size glass substrate 100 of G6 size (long limit 1850mm × minor face 1500mm).In Fig. 5, cut-out line shown in broken lines.As shown in Figure 5, can cut out 3 × 4=12 from the large-size glass substrate 100 of G6 size (growing limit 1850mm × minor face 1500mm) and open the hardened glass substrate 10 of G2 size (growing limit 470mm × minor face 370mm).The region of in addition, stamping hachure in Fig. 5 is the region being removed.In the example of Fig. 5, remove the region of width 220mm at two ends on long limit and the region of the width 10mm at the two ends of minor face.
As the cutting-off method of the large-size glass substrate after chemical enhanced, for example, can adopt and utilize cutting wheel that line is imported on large-size glass substrate and the method separately or by method that large-size glass substrate irradiating laser is cut off etc. of fractureing.
Then, the end face of hardened glass substrate 10 is carried out to chamfer machining (step S3).In this chamfer machining, preferably the end face entirety of hardened glass substrate 10 is carried out to grinding.Fig. 6 is the side-view illustrating for the end face of hardened glass substrate 10 being carried out to the revolving wheel of chamfer machining.Revolving wheel 20 shown in Fig. 6 is formed with the groove 21 that section is semiellipse shape (semicircle shape) in the side of the main part of disc-shape.
By the end face of hardened glass substrate 10 11 being generally perpendicularly pressed on to the groove 21 of the revolving wheel 20 of high speed rotating, thereby the end face of hardened glass substrate 10 11 is carried out to chamfer machining grinding along the groove 21 of revolving wheel 20.As mentioned above, expose the middle layer 17 with inner residual tensile stress CT at the end face 11 of hardened glass substrate 10, therefore the surfaceness after chamfer machining is more little more preferred.Specifically, the average surface roughness Ra of the end face 11 after preferred chamfer machining is below 1 μ m.In addition, the average surface roughness Ra of the described end face 11 after preferred chamfer machining is more than 0.05 μ m.According to more than, can obtain being used to form touch panel hardened glass substrate 10.
In addition, also can be after chamfer machining (step S3), further append as required the end face processing such as etching, brush grinding for the end face 11 of hardened glass substrate 10.
Below, to the hardened glass substrate 10 producing form sensor sensor form operation describe.
First, on hardened glass substrate, printing forms the photomasks (step S4) such as black matrix film.
Next,, by sputtering method, on hardened glass substrate, form the distribution (step S5) for example, being formed by nesa coating (, ITO film).Then,, by sputtering method, on hardened glass substrate, form metal wiring (step S6).By more than, on hardened glass substrate, form touch sensor.
After this, the hardened glass substrate that is formed with touch sensor is cut to shape of product (step S7), the end face of the glass substrate to each shape of product carries out chamfer machining (step S8).
According to more than, obtain the one-piece type touch panel of lens.
In the conventional method, the size that forms the hardened glass substrate of use for each sensor needs chemical enhanced equipment, and therefore productivity is lower.With respect to this, in the manufacture method of the hardened glass substrate that is used to form the one-piece type touch panel of lens relating in present embodiment, the size of hardened glass substrate that can form use with sensor is independently with the reply of the chemical enhanced equipment of one, and therefore productivity is high.
(embodiment 2)
As shown in Figure 7 A, be that in large-size glass substrate more than 1000mm, girth is elongated at minor face, and then operational difficulty in chemical enhanced operation, therefore easily because contacting with fixture at end face, large-size glass substrate produces damage (also referred to as defect).Below, this damage producing at end face is called to " facet damage ".Fig. 7 A is the schematic plan that produces the large-size glass substrate of facet damage in chemical enhanced operation.
As shown in Figure 7 B, for example form, in operation (being used to form the sputtering process of nesa coating 5a, 5b, metal wiring 6) at sensor, when heating has the large-size glass substrate of facet damage, likely produce the thermal crack that involves wider range take this facet damage as starting point.Fig. 7 B forms at sensor the schematic plan that produces the large-size glass substrate of the thermal crack take facet damage as starting point in operation.
Therefore, the large-size glass substrate that has produced facet damage in chemical enhanced operation does not advance to subsequent processing, and processing goes out of use.The hardened glass substrate that, is used to form the one-piece type touch panel of lens exists the problem that yield rate is low, produce rate variance.
Then,, with reference to Fig. 8, the manufacture method of the hardened glass substrate that is used to form the one-piece type touch panel of lens that embodiment 2 is related to describes.Fig. 8 is the schema of the manufacture method for the hardened glass substrate that is used to form the one-piece type touch panel of lens that present embodiment relates to is described.In Fig. 8, except the manufacturing process with the hardened glass substrate that is used to form the one-piece type touch panel of lens shown in solid line (step S1～S3, S11, S12), also record in the lump flow process after this (step S4～S8) shown in broken lines.And, in Fig. 8, also show in the lump the glass substrate size in each operation together with manufacturing process.
First, as shown in Figure 8, the minor face after end face chamfering is processed is that large-size glass substrate more than 1000mm carries out chemical enhanced (step S1).Step S1 is identical with Fig. 4, therefore omits detailed explanation.
Then, check the end face (step S11) of the large-size glass substrate after chemical enhanced, judge have or not (the step S12) of facet damage.If there is no facet damage (step S12 is no) on the large-size glass substrate after chemical enhanced, keep G6 size (long limit 1850mm × minor face 1500mm) and advance to sensor forming operation (step S4～S6).
On the other hand, if the large-size glass substrate after chemical enhanced exists the words (step S12 is yes) of facet damage, cut off this large-size glass substrate, be divided into multiple medium-sized glass substrates (step S2).As medium-sized glass substrate, can list so-called G1 size (long limit 400mm × minor face 300mm), G2 size (long limit 470mm × minor face 370mm), G3 size (long limit 650mm × minor face 550mm), G4 size (long limit 880mm × minor face 680mm).These sizes are all subject to sensor and form the restriction on the device in operation.Medium-sized glass substrate is the glass substrate that long limit is less than the rectangular shape of 1000mm, as long as forming the one-piece type touch panel of multiple lenss, can be also the size beyond above-mentioned size.
At this, with reference to Fig. 9, the object lesson of description of step S2.Fig. 9 is identical with Fig. 5, is the figure that cuts out the mode that cuts out of the medium-sized glass substrate (hardened glass substrate) 10 of G2 size (long limit 470mm × minor face 370mm) from the large-size glass substrate 100 of G6 size (long limit 1850mm × minor face 1500mm) is shown.In Fig. 9, cut-out line shown in broken lines.As shown in Figure 9, can cut out 3 × 4=12 from the large-size glass substrate 100 of G6 size (growing limit 1850mm × minor face 1500mm) and open the hardened glass substrate 10 of G2 size (growing limit 470mm × minor face 370mm).
At this, the region of stamping hachure in Fig. 9 is the region being removed.In the example of Fig. 9, the region that the width at the region that the width of removing the two ends on long limit is 220mm and the two ends of minor face is 10mm., the circumference of large-size glass substrate 100 is removed together with facet damage.Because facet damage is the shallow damage producing on the surface of end face, if more than therefore circumference being removed to 1mm, facet damage can not produce baneful influence to the intensity of hardened glass substrate 10., can effectively suppress thermal crack.
Then, the end face of hardened glass substrate 10 is carried out to chamfer machining (step S3).Step S3 is later identical with Fig. 4, therefore omits detailed explanation.
In the past, there are the words (the step S12 of Fig. 8 is yes) of facet damage in the large-size glass substrate after chemical enhanced, by this large-size glass substrate waste treatment.Therefore, yield rate is low, produces rate variance.With respect to this, in the manufacture method of the hardened glass substrate that is used to form the one-piece type touch panel of lens relating in present embodiment, remove facet damage from large-size glass substrate, eliminate on the basis of its baneful influence, be divided into multiple medium-sized glass substrates.What, carry out waste treatment is only the circumference of large-size glass substrate.Therefore, the manufacture method of the hardened glass substrate of what present embodiment related to the be used to form one-piece type touch panel of lens compared with the conventional method yield rate significantly improves, and productivity is also outstanding.
(investigation result of end face intensity)
As mentioned above, expose the middle layer 17 with inner residual tensile stress CT at the end face that cuts off the hardened glass substrate 10 obtaining from large-size glass substrate 100.Therefore, investigated the rupture stress of the end face of this hardened glass substrate 10.
Use and vertical put four-point bending test device (company of Shimadzu Seisakusho Ltd. オ ー processed ト グ ラ Off (Autograph) AG-X) rupture stress of end face is measured.Figure 10 is the vertical schematic diagram of putting four-point bending test device.As shown in figure 10, establish support interval=60mm, payload portion interval=20mm, pinblock (payload portion) speed=1mm/min.The end face of measuring strength at break in the test film shown in Figure 10 is the end face by the downside of support part supports.
And, use the three manufacture-illegal surface in contact shapometer PF60 of Ying Guang device company, embodiment and comparative example are measured to the average surface roughness Ra of end face.If sweep velocity=200 μ m/min, mensuration distance=4.8mm.Wave filter adopts Gaussian filter (cut-off 0.8mm).Roughness calculating method is take JIS BO601(2001) be benchmark.
(embodiment)
For cut off the hardened glass substrate getting off from the large-size glass substrate of thickness t=0.56mm, evaluate the rupture stress of end face.This end face is the end face not exposed by middle layer chemical enhanced, that have inner residual tensile stress CT.In an embodiment, cut out respectively the test film of width W=70mm, length L=5mm from 21 hardened glass substrates.Measure rupture stress for these 21 samples, try to achieve average rupture stress σ
avg.And, carry out the R1625(2010 take JIS for the measurement result of the rupture stress of 21 samples) be the Weibull distribution of benchmark, try to achieve the rupture stress σ that accumulative total failure probability is 0.1%
b0.1.
Consequently, average rupture stress σ
avg=116MPa, the rupture stress σ of accumulative total failure probability 0.1%
b0.1=83MPa.
On the other hand, average surface roughness Ra=0.87 μ m.
(comparative example)
For the large-size glass substrate of the thickness t=0.56mm not cutting off, evaluate the rupture stress of the end face with facet damage.This end face has been carried out chemical enhanced.In comparative example, cut out respectively the test film of width W=70mm, length L=2mm from 20 hardened glass substrates.Measure rupture stress for these 20 samples, try to achieve average rupture stress σ
avg.And, carry out the R1625(2010 take JIS for the measurement result of the rupture stress of 20 samples) be the Weibull distribution of benchmark, try to achieve the rupture stress σ that accumulative total failure probability is 0.1%
b0.1.
Consequently, average rupture stress σ
avg=423MPa, the rupture stress σ of accumulative total failure probability 0.1%
b0.1=24MPa.
On the other hand, average surface roughness Ra=1.12 μ m.
The end face relating at embodiment, owing to exposing the middle layer 17 with inner residual tensile stress CT, therefore compared with comparative example, average rupture stress σ
avgit is less value.But, the rupture stress σ of accumulative total failure probability 0.1%
b0.1three times of above values of comparative example.Consider to improve by removing facet damage the rupture stress σ of accumulative total failure probability 0.1%
b0.1.
More than the rupture stress that is used to form the accumulative total failure probability 0.1% of the end face of the hardened glass substrate of the one-piece type touch panel of lens is preferably 70MPa.In addition, the described rupture stress of accumulative total failure probability 0.1% is preferably below 400MPa.
And the hardened glass substrate relating to for embodiment, does not confirm sensor yet and forms the thermal crack in operation.
In addition, the present invention is not limited to above-mentioned embodiment, can in the scope that does not depart from purport, suitably change.
In detail and with reference to specific embodiment the present invention has been described, but can not depart from the spirit and scope of the present invention applies various changes, correction, this is self-explantory for a person skilled in the art.
The present invention is the application of the Japanese patent application 2012-284652 based on filing an application on December 27th, 2012, and its content is quoted in this as reference.
Claims (10)
1. be used to form a manufacture method for the hardened glass substrate of touch panel, can form the one-piece type touch panel of multiple lenss with a substrate, wherein,
The manufacture method of the described hardened glass substrate that is used to form touch panel possesses following step: the glass substrate that is rectangular shape more than 1000mm to the length of minor face carries out chemical enhanced step; Described glass substrate after chemical enhanced is divided into the step of multiple hardened glass substrates; And the end face of described multiple hardened glass substrates is carried out to the step of chamfer machining.
2. the manufacture method of the hardened glass substrate that is used to form touch panel according to claim 1, wherein,
The bond length of the glass substrate of described rectangular shape is below 2200mm.
3. the manufacture method of the hardened glass substrate that is used to form touch panel according to claim 1 and 2, wherein,
After carrying out chemical enhanced step, before the step cut apart, also possesses the step of the facet damage that checks the described glass substrate after chemical enhanced.
4. the manufacture method of the hardened glass substrate that is used to form touch panel according to claim 3, wherein,
In the situation that detecting described facet damage, in the step of cutting apart, remove described facet damage.
5. according to the manufacture method of the hardened glass substrate that is used to form touch panel described in any one in claim 1～4, wherein,
The average surface roughness Ra that carries out the end face of the described hardened glass substrate after the step of chamfer machining is below 1 μ m.
6. the manufacture method of the hardened glass substrate that is used to form touch panel according to claim 5, wherein,
The average surface roughness Ra that carries out the end face of the described hardened glass substrate after the step of chamfer machining is more than 0.05 μ m.
7. according to the manufacture method of the hardened glass substrate that is used to form touch panel described in any one in claim 1～6, wherein,
Carrying out, in the step of chamfer machining, carrying out chamfer machining by grinding.
8. according to the manufacture method of the hardened glass substrate that is used to form touch panel described in any one in claim 1～7, wherein,
Carrying out in chemical enhanced step, form at described glass substrate: upper layer and back layer, it has residual compression stress; And middle layer, its residual tensile stress CT in inside more than thering is 5MPa between this upper layer and back layer and below 50MPa.
9. according to the manufacture method of the hardened glass substrate that is used to form touch panel described in any one in claim 1～8, wherein,
The rupture stress that the accumulative total failure probability that carries out the end face of the described hardened glass substrate after the step of chamfer machining is 0.1% is more than 70MPa and below 400MPa.
10. according to the manufacture method of the hardened glass substrate that is used to form touch panel described in any one in claim 1～9, wherein,
The thickness t of described hardened glass substrate is 0.3～1.1mm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012284652A JP2014125399A (en) | 2012-12-27 | 2012-12-27 | Method for producing reinforced glass substrate for forming touch panel |
| JP2012-284652 | 2012-12-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103896481A true CN103896481A (en) | 2014-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310741449.9A Pending CN103896481A (en) | 2012-12-27 | 2013-12-27 | Manufacturing method of toughened glass substrate used for forming touch panel |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2014125399A (en) |
| KR (1) | KR20140085364A (en) |
| CN (1) | CN103896481A (en) |
| TW (1) | TW201429910A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109782956A (en) * | 2019-01-22 | 2019-05-21 | 上海大学 | A kind of display panel manufacturing method |
| CN110088052A (en) * | 2016-12-26 | 2019-08-02 | 日本电气硝子株式会社 | The disconnecting device of the damage testing method of glass, the manufacturing method of glass sheet and glass |
| CN111875265A (en) * | 2015-05-15 | 2020-11-03 | Ａｇｃ株式会社 | Chemically strengthened glass |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016216294A (en) * | 2015-05-19 | 2016-12-22 | 日本電気硝子株式会社 | Chemical strengthened glass, glass article for chemical strengthening, method for producing chemical strengthened glass, and splitting method |
| JP6382860B2 (en) * | 2016-01-07 | 2018-08-29 | 三菱日立パワーシステムズ株式会社 | Ni base alloy softening material, Ni base alloy member, boiler tube, combustor liner, gas turbine rotor blade, gas turbine disk, and Ni base alloy structure using the same |
| JP6618843B2 (en) * | 2016-03-24 | 2019-12-11 | Hoya株式会社 | Photomask substrate recycling method, photomask substrate manufacturing method, photomask blank manufacturing method, photomask manufacturing method, and pattern transfer method |
| FR3050990B1 (en) * | 2016-05-03 | 2018-05-18 | Saint-Gobain Glass France | GLASS FILLING AFTER TEMPERING |
| CN112452687B (en) * | 2020-11-18 | 2022-12-30 | 苏州鱼得水电气科技有限公司 | Bendable light and thin tempered glass and preparation method thereof |
-
2012
- 2012-12-27 JP JP2012284652A patent/JP2014125399A/en not_active Withdrawn
-
2013
- 2013-12-27 TW TW102148860A patent/TW201429910A/en unknown
- 2013-12-27 KR KR1020130164885A patent/KR20140085364A/en not_active Application Discontinuation
- 2013-12-27 CN CN201310741449.9A patent/CN103896481A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111875265A (en) * | 2015-05-15 | 2020-11-03 | Ａｇｃ株式会社 | Chemically strengthened glass |
| CN111875265B (en) * | 2015-05-15 | 2023-09-12 | Ａｇｃ株式会社 | chemically strengthened glass |
| CN110088052A (en) * | 2016-12-26 | 2019-08-02 | 日本电气硝子株式会社 | The disconnecting device of the damage testing method of glass, the manufacturing method of glass sheet and glass |
| CN109782956A (en) * | 2019-01-22 | 2019-05-21 | 上海大学 | A kind of display panel manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2014125399A (en) | 2014-07-07 |
| KR20140085364A (en) | 2014-07-07 |
| TW201429910A (en) | 2014-08-01 |
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Application publication date: 20140702 |