CN101853115A - Integrated projection-type capacitive touch screen and manufacturing method thereof - Google Patents
Integrated projection-type capacitive touch screen and manufacturing method thereof Download PDFInfo
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- CN101853115A CN101853115A CN 201010178257 CN201010178257A CN101853115A CN 101853115 A CN101853115 A CN 101853115A CN 201010178257 CN201010178257 CN 201010178257 CN 201010178257 A CN201010178257 A CN 201010178257A CN 101853115 A CN101853115 A CN 101853115A
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Abstract
The invention relates to an integrated projection-type capacitive touch screen and a manufacturing method thereof. The integrated projection-type capacitive touch screen only adopts a substrate, and a color coating is arranged in the non-visible range of the substrate; a backing insulating film is arranged on the whole surface of the substrate with the color coating, and a first electrode pattern is arranged on the backing insulating film; a dielectric insulating film is arranged on the first electrode pattern, and a second electrode pattern is arranged on electrolyte insulating film; the coverage of the electrolyte insulating film does not include joint terminals of the first electrode pattern, and a protective insulating film is arranged on the second electrode pattern; and the coverage of the protective insulating film does not include joint terminals on the edges of the first electrode pattern and the second electrode pattern, and the upper ends of the joint terminals are connected with an external control circuit through collecting lines. The single substrate with the color coating adopts a multi-layer composite film structure of the backing insulating film, an ITO film, the dielectric insulating film, the ITO film and the protective insulating film, can substantially reduce the thickness of the touch screen, and improves lightness thinness and yield.
Description
Technical field
The present invention relates to a kind of capacitance touch screen and manufacture method thereof, relate in particular to a kind of integrated projection-type capacitive touch screen and manufacture method thereof.
Background technology
In recent years, be accompanied by mobile phone, the terminal mobile device, the enhancingization of various electronic functionalities such as notebook computer, diversification, touch-screen obtains popularizing rapidly as one of main input function of equipment.It can allow the user seeing its display frame behind through touch-screen when, by the contact screen surface, for example by finger or the touch of induction pen on the display frame opposite position, realizes the various functions of this electronic equipment.Touch-screen is divided into many types according to its principle of work, and the present invention refers in particular to and is applied to mobile phone, PDA, notebook, the projecting type capacitor induction touch panel on the mobile terminal devices such as GPS.
Projecting type capacitor induction touch panel principle: traditional projecting type capacitor formula touch screen structure must be to be fitted by contact panel to protect panel to be constituted.Contact panel is each rete place panel, and the protection panel is generally toughened glass panel.On contact panel, have X-axis electrode pattern that forms by transparent conductive film and the Y-axis electrode pattern that forms by transparent conductive film equally, must have the insulation material of dielectric effect between the electrode pattern, distribute to allow electrode pattern form coupling capacitance.When hand or induction pen contact screen, when promptly protecting certain position of panel, the corresponding contact panel X-axis in this position, original coupling electric charge distributes and changes on the Y-axis.System is by determining to touch the position coordinates that takes place to the monitoring of this variation.
Use glass Fig. 1 to be arranged, two kinds of structures of Fig. 2 at present as traditional projecting type capacitor induction touch panel of the substrate of contact panel.
A kind of traditional projecting type capacitor induction touch panel shown in Figure 1, it adopts a kind of single face electro-conductive glass that plating ITO film (indium tin oxide transparent conducting film) generates on substrate in advance, perhaps uses common glass substrate 102, carries out the plated film of ITO at its single face.ITO film to this ito glass or plated film formation on glass substrate uses graphical making technology, etches the electrode pattern 104a on aforesaid X or the Y direction.On the ITO film after this layer patternization, cover the transparent insulating film 106a that plays the dielectric effect, then on this dielectric film 106a once more the mode with plated film form one deck ITO film, this layer ITO film is reused graphical making technology, etch the electrode pattern 104b on aforesaid X or the Y direction.Cover the transparent insulating film 106b that shields on the ITO film after this layer patternization, this part is so-called contact panel.Use the plastering agent 108 of optical lens gelatin (OCA) or UV glue (ultraviolet light binding) that contact panel and protection panel 120 are bonded afterwards, promptly form complete touch-screen.Protection panel 120 is a kind of common tempered glass.
Another kind of tradition projection inductance capacitance formula touch-screen shown in Figure 2, be to use a kind of two-sided electro-conductive glass that forms the ITO rete at the two sides of glass substrate 110 difference plated film, two membranes 114a and 114b to two-sided electro-conductive glass adopt its graph of a correspondence making technology respectively, etch the electrode pattern of X-axis or Y-axis.Cover transparent insulating film 116a and 116b then respectively on two membranes 114a and 114b, this part is contact panel.Use the plastering agent 118 of OCA (transparent optical cement) or UV glue (ultraviolet light binding) that this contact panel and protection panel 120 are bonded, promptly form complete touch-screen.
In the middle of above-mentioned two kinds of touch screen structures, exist one deck dielectric film to exist between two-layer electrode pattern, it allows to produce coupling capacitance between the two-layer electrode pattern as dielectric.Protection panel 120 is touch face, and when this face has the generation of touch, touch objects finger or felt pen will make the distribution of the former coupling capacitance that pre-exists on this touch location change.Can perceive the variation of coupling capacitance and determine the position that touches generation by scanning electrode pattern.
The thickness of each parts of the touch-screen of aforesaid way manufacturing is respectively: contact panel substrate and protection panel 102,110,120 are 0.5mm or 0.7mm.Be used to form the ITO film 104a of electrode pattern, 104b, 114a, 114b are 15 ~ 20nm. Dielectric film 106a, 106b, 116a, 116b are 150 ~ 200nm.Applying material 108,118 is 0.05mm.As seen in above-mentioned manufacture method, contact panel substrate and protection panel have occupied the thickness of the whole overwhelming majority.The touch-screen integral thickness is about about 1.5mm
Will be as 102, the 110 also useful macromolecular material substrates way instead of contact panel substrate, as adopting PET, PMMA, substrates such as PC.Though polymeric substrate reduces to some extent than thickness of glass substrate, the transmittance of macromolecular material substrate is compared glass will hang down about 15% even more.Can not reach and when reducing the touch-screen integral thickness, keep good transmittance.
The aforementioned touch-screen of making by traditional approach, panel needs 2 altogether, and stacked back transmittance is unsatisfactory, greatly about about 85%.If adopting macromolecular material is that substrate replaces glass, will cause transmittance more low.Though various piece has all adopted the visible light material transparent, under the trend that the mobile device flying power is required to improve day by day, how compressing the touch-screen integral thickness to greatest extent is first important topic of solution required for the present invention.
In the aforementioned conventional projection-type capacitive touch screen, the rete of multilayer ITO is arranged on the substrate, and need plate multilayer insulating film again after graphical at these ITO films, last and face glass is fitted.In the whole process, product must transmit between plated film and graphical making technology back and forth, product all must must be taken out from filming equipment when this just causes the secondary image equalization, and it is longer that product is exposed in the external environment condition time, becomes easily infected by dust.Meanwhile, when carrying out contact panel and protecting the applying of panel 120, because the dust of applying surface of contact, bubble is very difficult to remove fully, has caused yields low, and this problem occupy the most remarkable position in this traditional handicraft.Therefore how to solve second problem that the low problem of the yields of being brought by attaching process is solution required for the present invention.
If continue to adopt classical production process, solve thickness problem and will adopt thinner substrate, and the thinnest ito glass can be accomplished 0.3mm at present, but because can not tempering and on mobile device, do not have practical value substantially.Protection panel that in like manner can not tempering can not adopt especially.All adopt polymeric substrate as two panels, skin hardness then, intensity and integral light-transmitting rate will obviously descend than glass material.
So as seen, want to solve the problem of thickness and transmitance, take into account the low yield problem of the operation of avoiding fitting simultaneously, employing monolithic substrate is optimal way.Promptly all plated film formation on aforementioned panel 120 of all retes.And to realize this way, the obstacle of the maximum of the color printing that on panel 120, exists.
Color printing is a kind of coating that generally adopts, and mainly has been shading, the effect of modification, and the most common on mobile phone, it normally is distributed in the part outside the viewing area.Projection-type capacitive touch screen as the aforementioned, the SIO2 film that is used to make the ito thin film of electrode pattern and be used for insulating effect is topmost two kinds of retes, can certainly adopt other kind of material, as the ZnO conductive film, these two kinds of films, transparent conductive film and insulation SIO2 film, in light (atmosphere during plated film, power, Temperature Distribution, beat is less demanding) guarantee high permeability, under the prerequisite of low square resistance.Its best coating temperature is normally about 350～400 degree.This temperature substantially exceeds the temperature of color coating.Therefore must adopt the low temperature plated film.The rete that will guarantee low temperature depositing simultaneously has transmitance and side's resistance preferably.And, poor in edge's existence section of viewing area and color printing (is the height fall that exists between color coating and the substrate surface, it highly equals color coating thickness, it is in that up and down corner's gradient is all very steep anxious, and it is irregularly shaped), it is highly normally about 10um～50um, and the ITO thicknesses of layers is about 15nm～30nm, the nanoscale rete is with respect to the micron order color coating, it is poor to exist the section that approaches 1000 times of the thickness of rete own, and the gradient of this section difference is very steep, and promptly corner is equivalent to have obvious angle to exist and rough.When electrode pattern not merely is present in the viewing area, cross over the ito thin film between viewing area and the color coating, can be because the section difference between color coating and the glass substrate exists, the as easy as rolling off a log corner fracture of Chen Ji ito thin film herein in the section difference, thereby cause the ITO can not conducting, lose the purposes projection-type capacitive touch screen as the aforementioned of making electrode pattern, the ito thin film that is used to make electrode pattern requires conduction when film forming.Therefore successional influence is the 3rd problem that this problem need solve to rete to the influence of the resistance of rete side, transmitance and section difference how to eliminate the low temperature plated film.
Summary of the invention
Purpose of the present invention is exactly in order to solve the above-mentioned problems in the prior art, and a kind of integrated projection-type capacitive touch screen and manufacture method thereof are provided
Purpose of the present invention is achieved through the following technical solutions:
Integrated projection-type capacitive touch screen, wherein: only adopt a substrate, non-visual range on described substrate is provided with color coating, is provided with the bottoming dielectric film being provided with on the substrate on whole of color coating, and described bottoming dielectric film is provided with first electrode pattern; Described first electrode pattern is provided with the dielectric insulation film, and the electrolyte velum is provided with second electrode pattern, and the coverage of described electrolyte dielectric film does not comprise the splice terminal of first electrode pattern; Described second electrode pattern is provided with the protection dielectric film, and the coverage of described electric protection dielectric film does not comprise the splice terminal at first electrode pattern and the second electrode pattern edge; Described first electrode pattern is the X-axis electrode pattern, and described second electrode pattern is the Y-axis electrode pattern; Or described first electrode pattern is the Y-axis electrode pattern, and described second electrode pattern is the X-axis electrode pattern.
Above-mentioned integrated projection-type capacitive touch screen, wherein: described substrate is the transparency protected panel of tempered glass or macromolecular material.
Further, above-mentioned integrated projection-type capacitive touch screen, wherein: described color coating includes printing ink, gloss oil.
Further, above-mentioned integrated projection-type capacitive touch screen, wherein: described connecting line is for adopting the silver slurry lead of serigraphy and etching preparation; Or by the conductive film of plated film with the metal material of graphical making technology preparation; Or flexible PCB.
The manufacture method of integrated projection-type capacitive touch screen, it may further comprise the steps:
1. step measures the thermal metamorphism temperature of color coating, and the film coating environment temperature is set to low temperature, i.e. less below in the thermal metamorphism temperature of the thermal metamorphism temperature of color coating and substrate;
2. step regulates the material microcosmic softening temperature of film coating environment temperature to color coating, and regulates this temperature gradually and draw close to the low temperature that step sets in 1., guarantees that color coating flows smoothing in the microcosmic deliquescing at section difference place under this temperature;
3. step deposits one deck insulation film on substrate, thickness is 10 ~ 20nm, realizes surfacing, and increase ITO pays and puts forth effort, and alkali metal ion enters subsequent film in the isolation glass substrate;
4. step deposits one deck ito thin film once more on the insulation film that step obtains in 3., the thickness of ito thin film is 15～30nm, and resistance is 150 ~ 250 ohm;
5. step takes out film coating environment, carries out the graphical processing procedure first time, and the ito thin film that 4. step is made is etched into electrode pattern, at the edge generation terminal position of electrode pattern;
Step 6., deposition one deck insulation film on the electrode pattern that 5. step obtains, its thickness is 100～300nm, and film do not cover the terminal position, and its effect is to serve as the dielectric effect between the electrode pattern that step obtains in 5. and another electrode pattern that will prepare subsequently;
7. step deposits one deck ito thin film on the insulating thin layer that 6. step makes, the thickness of ito thin film is 15～30nm, and resistance is 150 ~ 250 ohm;
8. step takes out film coating environment, carries out the graphical processing procedure second time, will be etched into electrode pattern by the ito thin film that 7. step makes, at the edge generation terminal position of electrode pattern;
Step 9., deposition one deck insulation film on the electrode pattern that step obtains in 8., its thickness is 50～300nm, and film does not cover the terminal position; Its effect is the protective effect that all above-mentioned retes is played an integral body.
The manufacture method of above-mentioned integrated projection-type capacitive touch screen, wherein: when there are the section difference in described color coating and substrate, be provided with at substrate directly that plated film forms each required layer film of touch-screen on whole of color coating.
Further, the manufacture method of above-mentioned integrated projection-type capacitive touch screen, wherein: described step 1.～step 9. in, film coating environment is under low temperature depositing and the section difference successive sedimentation condition all the time, panel temperature was no more than the deposition under the heat resisting temperature when described low temperature depositing was plated film, and the color printing coating is not destroyed when guaranteeing plated film; Described section poor successive sedimentation deposits the thin dielectric film of one deck in advance for referring to the microcosmic softening temperature of film coating environment adjustment to the color printing coating, to the section difference place smoothing processing of advancing, so carries out the process of other film depositions again.
Further, the manufacture method of above-mentioned integrated projection-type capacitive touch screen, wherein: described low temperature depositing and the successive sedimentation of section difference comprise evaporation coating and magnetron sputtering plating dual mode.
Again further, the manufacture method of above-mentioned integrated projection-type capacitive touch screen, wherein: described when making all retes temperature all be controlled at the microcosmic softening range of color printing coating.
The advantage of technical solution of the present invention is mainly reflected in: exist on the substrate under the condition of the not high color coating of thermotolerance having overcome, adopt low temperature depositing and section difference successive sedimentation technology, make whole technology only adopt a substrate, the thickness of touch-screen significantly can be compressed, improve frivolous property.Monobasal can guarantee the transmitance of visible light to greatest extent simultaneously.Compare with traditional handicraft, the present invention is because only adopt a glass substrate, so the contact panel in the traditional handicraft can omit with the applying operation between the protection panel, and the low problem of yields that dust, bubble cause during therefore by applying has obtained effective solution.
Description of drawings
Purpose of the present invention, advantage and characteristics will illustrate by the non-limitative illustration of following preferred embodiment and explain.These embodiment only are the prominent examples of using technical solution of the present invention, and all technical schemes of taking to be equal to replacement or equivalent transformation and forming all drop within the scope of protection of present invention.In the middle of these accompanying drawings,
Fig. 1 is traditional whole section structural representation of projection-type capacitive touch screen;
Fig. 2 is the whole section structural representation of another kind of traditional projection-type capacitive touch screen;
Fig. 3 is the organigram of this integrated projection-type capacitive touch screen;
Fig. 4 a, 4b are microvisual model contrast synoptic diagram in direct plated film front and back on the color coating section difference;
Fig. 5 a, 5b are microvisual model contrast synoptic diagram in direct plated film front and back on the another kind of color coating section difference;
Fig. 6 a, 6b are in the manufacture method of this integrated projection-type capacitive touch screen, and microvisual model figure contrasts synoptic diagram before and after the color coating plated film of section difference successive sedimentation.
Embodiment
Integrated projection-type capacitive touch screen shown in Fig. 3 ~ 6, its special feature is: only adopt a substrate 1, non-visual range on described substrate 1 is provided with color coating 2, be provided with bottoming dielectric film 3 on whole of color coating 2 being provided with on the substrate, described bottoming dielectric film 3 is provided with first electrode pattern 4; Described first electrode pattern is provided with dielectric insulation film 5, and the electrolyte velum is provided with second electrode pattern 6, and the coverage of described electrolyte dielectric film 5 does not comprise the splice terminal of first electrode pattern 4; Described second electrode pattern 6 is provided with protection dielectric film 7, and the coverage of described electric protection dielectric film 7 does not comprise the splice terminal at first electrode pattern 4 and second electrode pattern, 6 edges; Be connected with external control circuit 9 by connecting 8 on the described joint terminal; Described first electrode pattern 4 is the X-axis electrode pattern, and described second electrode pattern 6 is the Y-axis electrode pattern; Or described first electrode pattern 4 is the Y-axis electrode pattern, and described second electrode pattern 6 is the X-axis electrode pattern.
Further, the described substrate 1 transparency protected panel that is tempered glass or macromolecular material.Color coating 2 includes macromolecule class materials such as printing ink, gloss oil.The characteristics of these materials are that transmitance is low, heat-resisting be no more than usually Celsius 200 the degree.
In conjunction with preferred implementation of the present invention, described connecting line 8 is for adopting the silver slurry lead of serigraphy and etching preparation again.Perhaps, connecting line 8 is the conductive films by the metal material of plated film and graphical making technology preparation.Certainly, can also adopt flexible PCB to constitute connecting line 8.
In conjunction with the manufacture method of this integrated projection-type capacitive touch screen, its unusual part is may further comprise the steps:
1. step measures the thermal metamorphism temperature of color coating, and the film coating environment temperature is set to low temperature, i.e. less below in the thermal metamorphism temperature of the thermal metamorphism temperature of color coating and substrate.
2. step regulates the material microcosmic softening temperature of film coating environment temperature to color coating, and regulates this temperature gradually and draw close to the low temperature that step sets in 1., guarantees that color coating flows smoothing in the microcosmic deliquescing at section difference place under this temperature.
3. step deposits one deck insulation film on substrate, thickness is 10 ~ 20nm, realizes surfacing, and increase ITO pays and puts forth effort, and alkali metal ion enters subsequent film in the isolation glass substrate.Certainly, in conjunction with preferred implementation of the present invention, thickness is 15nm.
4. step deposits one deck ito thin film once more on the insulation film that step obtains in 3., the thickness of ito thin film is 15～30nm, and resistance is 150 ~ 250 ohm.Find by multiple comparison test, resistance 200 ohm preferable.
5. step takes out film coating environment, carries out the graphical processing procedure first time, and the ito thin film that 4. step is made is etched into electrode pattern, at the edge generation terminal position of electrode pattern.
Step 6., deposition one deck insulation film on the electrode pattern that 5. step obtains, its thickness is 100～300nm, and film do not cover the terminal position, and its effect is to serve as the dielectric effect between the electrode pattern that step obtains in 5. and another electrode pattern that will prepare subsequently.
7. step deposits one deck ito thin film on the insulating thin layer that 6. step makes, the thickness of ito thin film is 15～30nm, and resistance is 150 ~ 250 ohm.Same, resistance is preferable with 200 ohm.
8. step takes out film coating environment, carries out the graphical processing procedure second time, will be etched into electrode pattern by the ito thin film that 7. step makes, at the edge generation terminal position of electrode pattern.
Step 9., deposition one deck insulation film on the electrode pattern that step obtains in 8., its thickness is 50～300nm, and film does not cover the terminal position; Its effect is the protective effect that all above-mentioned retes is played an integral body.
Again further, in order to realize preferable touch feedback effects, described insulation film is the SIO2 film.And, when there are the section difference in described color coating and substrate, be provided with at substrate directly that plated film forms each required layer film of touch-screen on whole of color coating.Simultaneously, film coating environment is under low temperature depositing and the section difference successive sedimentation condition all the time in this manufacture method, and is no more than the heat resisting temperature of color printing.Like this, color coating is not destroyed in the time of can effectively guaranteeing plated film.
And, step 1.～step 9. in, film coating environment is under low temperature depositing and the section difference successive sedimentation condition all the time, panel temperature was no more than the deposition heat resisting temperature under when described low temperature depositing was plated film, the color printing coating is not destroyed during the assurance plated film; Described section poor successive sedimentation deposits the thin dielectric film of one deck in advance for referring to the microcosmic softening temperature of film coating environment adjustment to the color printing coating, to the section difference place smoothing processing of advancing, so carries out the process of other film depositions again.Simultaneously, described low temperature depositing and the successive sedimentation of section difference comprise evaporation coating and magnetron sputtering plating dual mode.And temperature all is controlled at the microcosmic softening range of color printing coating when making all retes.
In conjunction with the actual manufacturing of this integrated projection-type capacitive touch screen specifically---
The low temperature depositing plated film: low temperature is meant the thermal metamorphism temperature that is no more than the used material of color printing, and thermal metamorphism typically refers to variable color, and distortion is spoiled, the variation of macroscopic views such as distortion.Deposition then is meant utilizes the mode of evaporation or magnetron sputtering to allow ITO and SIO2 form rete on substrate surface.
Usually the used material of color printing is a macromolecular material, and its thermal metamorphism temperature is no more than 200 degree, and the means that adopt among the present invention are for being lower than 200 deposition ITO when spending and SIO2.And concrete temperature is then decided on the concrete material of color printing, takes into account substrate material simultaneously.When adopting glass substrate, generally only need coating temperature to be no more than color printing figure layer deterroration and get final product, and adopt PET, PMMA.During macromolecular materials such as PC, because the thermal softening of this class material, deterroration is also about 150 degree, so coating temperature must be taken into account color printing figure layer deterroration and substrate deterroration simultaneously.
Section difference successive sedimentation plated film: section difference continuous film forming then is the material softening temperature treatment substrate that utilizes a little more than color coating, make color coating after section difference corner is softening, in surface tension, thermal expansion, under the comprehensive mechanical function such as thermal fluidity, vertically original, the significantly sharp-pointed section difference of knuckle develops into level and smooth gradually, and smooth segment of curve is poor.And deposit to ITO film on the substrate subsequently, then obtain good connectedness at more level and smooth section difference place.
Shown in Fig. 4 a, 4b, this is a kind of idealized diagram, the section of color coating is poor on its expression substrate, the section difference comprises two parts, a part is that the section that color coating and substrate joint form differs from 201, a kind of is that this section when the turning of color coating differs from 101, and dotted line represents that the color coating height will be than illustrated height among the figure, and diagram only is an idealized model.When under this model condition directly during the low temperature depositing plated film, rete 3 extremely easily section differ from 101 and section differ from 201 places and disconnect, break, form broken string 101a and broken string 201b.
Shown in Fig. 5 a, 5b, this is another kind of ideal model, in like manner the section differ from 102 and the section differ from 202, different with Fig. 4 a, 4b is, and to replant situation more general and true, section difference place should be non-an angle of 90 degrees but the part curve shape is arranged, but the thermosetting baking temperature of most color coatings all is to be lower than softening temperature, and the line smoothing degree is low after the thermosetting, still can form broken string 102a and broken string 202b.
Fig. 6 a, 6b differ from the diagram of successive sedimentation for the present invention institute section of employing, when film coating environment reaches the thermal softening temperature of color coating, section differs from 101, section differs from 201, section differ from 102 and section differ from 202 places will be in the microcosmic thermal softening, the mobile enhancing, under the capillary effect section of changing into differ from 103 with the section differ from 203, its smoothness of curve obviously increases.Under this condition, the film of deposition has good continuity at section difference place, constitutes transition section 103a and transition section 203b.The continuity that is particularly useful for the ITO rete of electrode pattern preparation is guaranteed.Before imposing the conductive film deposition, also need to plate the SIO2 of the about 15～30nm of a layer thickness among the present invention, play the effect at the disconnected place of further smooth section, simultaneously can play the internal layer antireflection, improve transmittance, stop the alkali metal ion in the glass substrate to diffuse into rete, improve the multiple action of conducting film adhesion.
The composite film stack:
Adopt the MULTILAYER COMPOSITE membrane structure of bottoming SIO2 film+ito thin film+dielectric insulation film+ito thin film+protection dielectric film; replace the way in the traditional fabrication method at the two-sided plating ITO of substrate; promptly the insulated part filming of its dielectric effect; owing to directly operation on a substrate, originally the part of its applying effect also had been omitted simultaneously.
The SIO2 film that wherein feels secure is particularly important, and the effect of its further smoothing section difference occupy most important position.Ito thin film subsequently is used to prepare electrode pattern, and SIO2 is respectively applied for dielectric and protective effect.Wherein the range of deposition of dielectric SIO2 is designed to not cover the terminal position that engages with connecting line of being used for of first electrode pattern; the range of deposition of protection SIO2 is designed to not cover simultaneously the terminal position that engages with connecting line of being used for of the first, the second electrode pattern.
Certainly, in said process, the microcosmic fusing takes place in the color printing material at section difference place, flow, and effects such as smoothing, its varied number level is the microcosmic rank, reactionless on the macroscopic view is that naked eyes are invisible.
The substantive distinguishing features that the present invention gives prominence to and significant progressive being mainly reflected in: exist under the condition of the not high color coating of heat resistance having overcome substrate, adopt low temperature depositing and section difference successive sedimentation technology, make whole technology only adopt a substrate, the thickness of touch-screen significantly can be compressed, improve frivolous property. Monobasal can guarantee the transmitance of visible light to greatest extent simultaneously. Compare with traditional handicraft, the present invention is because only adopt a glass substrate, so the contact panel in the traditional handicraft can omit with the applying operation between the protection panel, and the low yields problem that dust, bubble cause during therefore by applying has obtained effective solution.
Claims (9)
1. integrated projection-type capacitive touch screen, it is characterized in that: only adopt a substrate, non-visual range on described substrate is provided with color coating, is provided with the bottoming dielectric film being provided with on the substrate on whole of color coating, and described bottoming dielectric film is provided with first electrode pattern; Described first electrode pattern is provided with the dielectric insulation film, and the dielectric velum is provided with second electrode pattern, and the coverage of described dielectric velum does not comprise first electrode pattern; Described second electrode pattern is provided with peripheral protection dielectric film, and the coverage of described peripheral protection dielectric film does not comprise the splice terminal at first electrode pattern and the second electrode pattern edge; Be connected with external control circuit by connecting line on the described splice terminal; Described first electrode pattern is the X-axis electrode pattern, and described second electrode pattern is the Y-axis electrode pattern; Or described first electrode pattern is the Y-axis electrode pattern, and described second electrode pattern is the X-axis electrode pattern.
2. integrated projection-type capacitive touch screen according to claim 1 is characterized in that: described substrate is the transparency protected panel of tempered glass or macromolecular material.
3. integrated projection-type capacitive touch screen according to claim 1 is characterized in that: described color coating includes printing ink, gloss oil.
4. integrated projection-type capacitive touch screen according to claim 1 is characterized in that: described connecting line is for adopting the silver slurry lead of serigraphy and etching preparation; Or by the conductive film of plated film with the metal material of graphical making technology preparation; Or flexible PCB.
5. the manufacture method of integrated projection-type capacitive touch screen is characterized in that may further comprise the steps:
1. step measures the thermal metamorphism temperature of color coating, and the film coating environment temperature is set to low temperature, i.e. less below in the thermal metamorphism temperature of the thermal metamorphism temperature of color coating and substrate;
2. step regulates the material microcosmic softening temperature of film coating environment temperature to color coating, and regulates this temperature gradually and draw close to the low temperature that step sets in 1., guarantees that color coating flows smoothing in the microcosmic deliquescing at section difference place under this temperature;
3. step deposits one deck insulation film on substrate, thickness is 10 ~ 20nm, realizes surfacing, and increase ITO pays and puts forth effort, and alkali metal ion enters subsequent film in the isolation glass substrate;
4. step deposits one deck ito thin film once more on the insulation film that step obtains in 3., the thickness of ito thin film is 15～30nm, and resistance is 150 ~ 250 ohm;
5. step takes out film coating environment, carries out the graphical processing procedure first time, and the ito thin film that 4. step is made is etched into electrode pattern, at the edge generation terminal position of electrode pattern;
Step 6., deposition one deck insulation film on the electrode pattern that 5. step obtains, its thickness is 100～300nm, and film do not cover the terminal position, and its effect is to serve as the dielectric effect between the electrode pattern that step obtains in 5. and another electrode pattern that will prepare subsequently;
7. step deposits one deck ito thin film on the insulating thin layer that 6. step makes, the thickness of ito thin film is 15～30nm, and resistance is 150 ~ 250 ohm;
8. step takes out film coating environment, carries out the graphical processing procedure second time, will be etched into electrode pattern by the ito thin film that 7. step makes, at the edge generation terminal position of electrode pattern;
Step 9., deposition one deck insulation film on the electrode pattern that step obtains in 8., its thickness is 50～300nm, and film does not cover the terminal position; Its effect is the protective effect that all above-mentioned retes is played an integral body.
6. the manufacture method of integrated projection-type capacitive touch screen according to claim 5 is characterized in that: when there are the section difference in described color coating and substrate, be provided with at substrate directly that plated film forms each required layer film of touch-screen on whole of color coating.
7. the manufacture method of integrated projection-type capacitive touch screen according to claim 5, it is characterized in that: described step 1.～step 9. in, film coating environment is under low temperature depositing and the section difference successive sedimentation condition all the time, panel temperature was no more than the deposition under the heat resisting temperature when described low temperature depositing was plated film, and the color printing coating is not destroyed when guaranteeing plated film; Described section poor successive sedimentation deposits the thin dielectric film of one deck in advance for referring to the microcosmic softening temperature of film coating environment adjustment to the color printing coating, to the section difference place smoothing processing of advancing, so carries out the process of other film depositions again.
8. the manufacture method of integrated projection-type capacitive touch screen according to claim 7 is characterized in that: a described low temperature depositing and the successive sedimentation of section difference comprise evaporation coating and magnetron sputtering plating dual mode.
9. integrated projection-type capacitive touch screen according to claim 5 is characterized in that when making all retes temperature all is controlled at the microcosmic softening range of color printing coating.
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| CN (1) | CN101853115A (en) |
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| CN102063235A (en) * | 2010-12-28 | 2011-05-18 | 苏州超联光电有限公司 | Capacitive screen assembly and preparation method thereof |
| CN102073406A (en) * | 2010-12-31 | 2011-05-25 | 汕头超声显示器有限公司 | Touch screen and handheld device |
| CN102096536A (en) * | 2010-12-31 | 2011-06-15 | 晟光科技股份有限公司 | Touch screen with single-sided structure |
| CN102253782A (en) * | 2011-08-16 | 2011-11-23 | 深圳市宝明科技股份有限公司 | ITO (Indium Tin Oxide)-bridged integrated capacitive touch screen and manufacturing method |
| CN102289334A (en) * | 2011-08-16 | 2011-12-21 | 深圳市宝明科技股份有限公司 | Indium tin oxide (ITO) through hole capacitance touch screen and method for manufacturing same |
| CN102298475A (en) * | 2011-08-16 | 2011-12-28 | 深圳市宝明科技股份有限公司 | Indium tin oxide (ITO) through hole integrated capacitive touch screen and production method thereof |
| CN102566839A (en) * | 2010-12-30 | 2012-07-11 | 东莞联胜液晶显示器有限公司 | Surface-capacitive touch panel and manufacturing method thereof |
| CN102929420A (en) * | 2011-08-10 | 2013-02-13 | 富创得科技股份有限公司 | Manufacturing method for touch control panel structure |
| WO2013020406A1 (en) * | 2011-08-10 | 2013-02-14 | 富创得科技股份有限公司 | Touch control panel structure and manufacturing method thereof |
| CN103257768A (en) * | 2013-01-30 | 2013-08-21 | 福建科创光电有限公司 | Integral capacitive sensing touch screen with conducting channels and method for manufacturing integral capacitive sensing touch screen |
| US8710516B2 (en) | 2011-08-10 | 2014-04-29 | Fortrend Taiwan Scientific Corp. | Touch panel structure and manufacturing method thereof |
| CN103941910A (en) * | 2013-01-23 | 2014-07-23 | 北京京东方光电科技有限公司 | Touch panel and manufacturing method thereof |
| US9019219B2 (en) | 2011-07-11 | 2015-04-28 | Electronics And Telecommunications Research Institute | Touch screen panel |
| TWI494648B (en) * | 2011-07-11 | 2015-08-01 | Korea Electronics Telecomm | Touch screen panel |
| US9760227B2 (en) | 2013-01-30 | 2017-09-12 | Fujian Kechuang Photoelectric Co., Ltd. | OGS captive touch panel and method for manufacturing same |
| CN110023889A (en) * | 2017-01-23 | 2019-07-16 | 日写株式会社 | Capacitive touch panels |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102063235A (en) * | 2010-12-28 | 2011-05-18 | 苏州超联光电有限公司 | Capacitive screen assembly and preparation method thereof |
| CN102566839A (en) * | 2010-12-30 | 2012-07-11 | 东莞联胜液晶显示器有限公司 | Surface-capacitive touch panel and manufacturing method thereof |
| CN102073406A (en) * | 2010-12-31 | 2011-05-25 | 汕头超声显示器有限公司 | Touch screen and handheld device |
| CN102096536A (en) * | 2010-12-31 | 2011-06-15 | 晟光科技股份有限公司 | Touch screen with single-sided structure |
| TWI494648B (en) * | 2011-07-11 | 2015-08-01 | Korea Electronics Telecomm | Touch screen panel |
| US9019219B2 (en) | 2011-07-11 | 2015-04-28 | Electronics And Telecommunications Research Institute | Touch screen panel |
| WO2013020406A1 (en) * | 2011-08-10 | 2013-02-14 | 富创得科技股份有限公司 | Touch control panel structure and manufacturing method thereof |
| CN102929420B (en) * | 2011-08-10 | 2015-08-26 | 富创得科技股份有限公司 | Touch panel structure provided manufacture method |
| US8710516B2 (en) | 2011-08-10 | 2014-04-29 | Fortrend Taiwan Scientific Corp. | Touch panel structure and manufacturing method thereof |
| CN102929420A (en) * | 2011-08-10 | 2013-02-13 | 富创得科技股份有限公司 | Manufacturing method for touch control panel structure |
| CN102298475A (en) * | 2011-08-16 | 2011-12-28 | 深圳市宝明科技股份有限公司 | Indium tin oxide (ITO) through hole integrated capacitive touch screen and production method thereof |
| WO2013023491A1 (en) * | 2011-08-16 | 2013-02-21 | 深圳市宝明科技股份有限公司 | Ito through hole single-body capacitive touch screen and manufacturing method |
| CN102253782B (en) * | 2011-08-16 | 2013-05-08 | 深圳市宝明科技股份有限公司 | ITO (Indium Tin Oxide)-bridged integrated capacitive touch screen and manufacturing method |
| CN102289334B (en) * | 2011-08-16 | 2013-01-23 | 深圳市宝明科技股份有限公司 | Indium tin oxide (ITO) through hole capacitance touch screen and method for manufacturing same |
| CN102298475B (en) * | 2011-08-16 | 2012-08-29 | 深圳市宝明科技股份有限公司 | Indium tin oxide (ITO) through hole integrated capacitive touch screen and production method thereof |
| CN102289334A (en) * | 2011-08-16 | 2011-12-21 | 深圳市宝明科技股份有限公司 | Indium tin oxide (ITO) through hole capacitance touch screen and method for manufacturing same |
| CN102253782A (en) * | 2011-08-16 | 2011-11-23 | 深圳市宝明科技股份有限公司 | ITO (Indium Tin Oxide)-bridged integrated capacitive touch screen and manufacturing method |
| CN103941910A (en) * | 2013-01-23 | 2014-07-23 | 北京京东方光电科技有限公司 | Touch panel and manufacturing method thereof |
| CN103257768A (en) * | 2013-01-30 | 2013-08-21 | 福建科创光电有限公司 | Integral capacitive sensing touch screen with conducting channels and method for manufacturing integral capacitive sensing touch screen |
| US9760227B2 (en) | 2013-01-30 | 2017-09-12 | Fujian Kechuang Photoelectric Co., Ltd. | OGS captive touch panel and method for manufacturing same |
| CN110023889A (en) * | 2017-01-23 | 2019-07-16 | 日写株式会社 | Capacitive touch panels |
| CN110023889B (en) * | 2017-01-23 | 2023-11-28 | 日写株式会社 | Capacitive touch panel |
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