CN103123564B - A kind of capacitance touch screen and manufacture method thereof - Google Patents
A kind of capacitance touch screen and manufacture method thereof Download PDFInfo
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- CN103123564B CN103123564B CN201310093085.8A CN201310093085A CN103123564B CN 103123564 B CN103123564 B CN 103123564B CN 201310093085 A CN201310093085 A CN 201310093085A CN 103123564 B CN103123564 B CN 103123564B
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Abstract
The present invention relates to a kind of capacitance touch screen and manufacture method thereof, capacitance touch screen comprises at least one hard transparent substrate, it is characterized by: at least one surface of described substrate is provided with arrangement of electrodes district, arrangement of electrodes district is provided with many grooves, conducting nano powder is filled with in groove, conducting nano powder in each bar groove is interconnected and form conductive yarn, and conductive yarn forms the induction electrode of capacitance touch screen by netted tile mode.The making of the induction electrode of capacitance touch screen is owing to being form conductive yarn by offering groove and embedding conducting nano powder, do not need to adopt the method for carrying out high temperature plated film on substrate to carry out, thus make capacitance touch screen have higher flexibility ratio in material, structure, process choice, reduce the manufacturing cost of capacitance touch screen further.
Description
Technical field
The present invention relates to touch-screen, particularly relate to a kind of capacitance touch screen and corresponding manufacture method.
Background technology
Capacitance touch screen as the efficient input media of one, have highly sensitive, touch and do not need firmly, easily realize the plurality of advantages such as multiple point touching, be used on the multiple consumption electronic products such as mobile phone, panel computer, notebook.
Structurally, current capacitance touch screen generally comprises at least one transparent hard substrate, and the induction electrode be produced on substrate, these induction electrodes can be arranged according to matrix-style, also can adopt triangular design (reference publication US4087625), single layer designs can be adopted, also can adopt bilayer or Multi-layer design.In any case in order to ensure light transmission, induction electrode all needs to adopt transparent conductive material, and the film as tin indium oxide (ITO), zinc oxide aluminum (AZO) makes.
But, this transparent conductive material film generally needs at high temperature to deposit, thus higher requirement is proposed to the heat-resisting quantity of other retes on substrate and capacitance touch screen, such as, in order to deposit the film of this transparent conductive material on substrate, need to adopt more resistant to elevated temperatures glass substrate, and plastic base cannot be used, and other retes on substrate, as organic coating, mimeograph layer, its resistance to elevated temperatures is general all poor, need to make again after having made induction electrode, thus reduce capacitance touch screen at material, structure, flexibility ratio in process choice, the cost of this capacitance touch screen is made to be difficult to reduce.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of capacitance touch screen and manufacture method thereof, make the induction electrode of capacitance touch screen without the need to making under high-temperature technology, thus make capacitance touch screen have higher flexibility ratio in material, structure, process choice.The technical scheme adopted is as follows:
A kind of capacitance touch screen, comprise at least one hard transparent substrate, it is characterized by: at least one surface of described substrate is provided with arrangement of electrodes district, arrangement of electrodes district is provided with many grooves, the lotion of conductive nano-particles is filled with in groove, the lotion of the conductive nano-particles in each bar groove company of knot and form conductive yarn mutually, conductive yarn forms the induction electrode of capacitance touch screen by netted tile mode.
The making of above-mentioned induction electrode is owing to being by offering groove and the lotion embedding conductive nano-particles forms conductive yarn, do not need to adopt the method for carrying out high temperature plated film on substrate to carry out, thus make capacitance touch screen have higher flexibility ratio in material, structure, process choice, reduce the manufacturing cost of capacitance touch screen further.Wherein the resistance of conductive yarn can be regulated by the degree of depth of the thickness of fine rule or groove, in general, the degree of depth of groove is arranged can reduce more greatly the resistance of conductive yarn, and the raising of light-proofness can not be caused, ensure electric conductivity and the light transmission of induction electrode.
As a kind of preferred version, described substrate is plastic base, and described groove is directly molded on a surface of plastic base.Because substrate and groove can one-shot formings, thus there is the simple advantage of manufacture craft.Its corresponding manufacture method comprises the steps:
(1), adopt the method for injection mo(u)lding to form plastic base, and at least one surface of plastic base, form groove simultaneously;
(2), at plastic base, this applies the lotion of one deck conductive nano-particles on the surface, makes the lotion of conductive nano-particles be embedded in groove;
(3), remove the lotion of the most of conductive nano-particles on this surface of plastic base, only leave the lotion of the partially conductive nano particle embedding groove, make the lotion of the partially conductive nano particle embedding groove mutually the company of knot form conductive yarn.
As another kind of preferred version, described substrate is glass substrate, and described groove is the etching bath on glass baseplate surface.Adopt glass substrate, capacitance touch screen can be made more wear-resisting.Its corresponding manufacture method comprises the steps:
(1), at least one surface of glass substrate, one deck photosensitive resin layer is applied;
(2), on photosensitive resin layer, the hollow slots with linear is formed by exposure, developing method;
(3), under the protection of photosensitive resin layer, adopt glass etching liquid to etch this surface of glass substrate, at glass substrate, this forms etching bath on the surface thus;
(4), photosensitive resin layer is taken off;
(5), at the lotion of this surface of substrate coating one deck conductive nano-particles, the lotion of partially conductive nano particle is made to embed in groove;
(6), remove the lotion of this most of conductive nano-particles on the surface of glass substrate, only leave the lotion of the partially conductive nano particle embedded in groove, make the lotion of the partially conductive nano particle embedding groove mutually the company of knot form conductive yarn.
As another kind of preferred version, described substrate comprises glass substrate or plastic base, and is coated in the photosensitive resin layer on glass substrate or plastic base, and described groove is the hollow slots on photosensitive resin layer.Adopt this scheme, the technique etched on the glass substrate can be saved.Its corresponding manufacture method comprises the steps:
(1), at least one surface of glass substrate or plastic base, one deck photosensitive resin layer is applied;
(2), on photosensitive resin layer, the hollow slots with linear is formed by the method for exposure, development;
(3), on photosensitive resin layer, apply the lotion of one deck conductive nano-particles, make the lotion of partially conductive nano particle embed in groove;
(4), the lotion of the most of conductive nano-particles removed on photosensitive resin layer, only leave the lotion of the partially conductive nano particle embedded in groove, make the lotion of the partially conductive nano particle embedded in groove be interconnected to form conductive yarn.
As another kind of preferred version, described substrate comprises glass substrate or plastic base, and is coated in the photosensitive resin layer on glass substrate or plastic base, and described groove is the impression groove on photosensitive resin layer.Adopt a high-precision pressing mold, photosensitive resin layer forms impression, generally can improve the precision of its groove further.Its corresponding manufacture method comprises the steps:
(1), at least one surface of glass substrate or plastic base, one deck photosensitive resin layer is applied;
(2), adopt one to be manufactured with the pressing mold of convex epirelief in advance and photosensitive resin layer compresses mutually, photosensitive resin layer is formed impression groove;
(3), by irradiating ultraviolet light, photosensitive resin layer is solidified;
(4), remove pressing mold, the impression groove on described photosensitive resin layer is groove;
(5), on photosensitive resin layer, apply the lotion of one deck conductive nano-particles, make the lotion of partially conductive nano particle embed in groove;
(6), the lotion of the most of conductive nano-particles removed on photosensitive resin layer, only leave the lotion of the partially conductive nano particle embedded in groove, make the lotion of the partially conductive nano particle embedded in groove mutually the company of knot form conductive yarn.
The lotion of above-mentioned conductive nano-particles can be the lotion of nano carbon particle, nano-metal particle (as nanogold particle, nano-Ag particles), as nano-sized carbon slurry, nanometer silver paste.
Arranging of above-mentioned induction electrode can adopt single layer structure or double-decker.In double-decker, two surfaces of substrate are respectively equipped with the first arrangement of electrodes district extended along first direction and the second arrangement of electrodes district extended along second direction, first arrangement of electrodes district and the second arrangement of electrodes district all offer many grooves, after the lotion of filled conductive nano particle in a groove, forms the first induction electrode and the second induction electrode respectively.In single layer structure, the triangular-shaped electrodes that can be provided with multiple complementation on a surface of substrate arranges district, arrange in triangular-shaped electrodes and district offers many grooves, after the lotion of filled conductive nano particle in a groove, form complementary triangle induction electrode (sensing principle can with reference to publication US4087625); Also can be the strip electrode layout district being provided with many same directions extensions at one of substrate on the surface, and be arranged in the block type electrode layout district that each strip electrode arranges side, district, strip electrode arranges that district and block type electrode arrange that Qu Shangjun offers many grooves, after the lotion of filled conductive nano particle in a groove, the lotion of the conductive nano-particles that each block type electrode is arranged in district's upper groove forms the first induction electrode, and the lotion of the conductive nano-particles that each strip shaped electric poles is arranged in district's upper groove forms the second induction electrode.Adopt aforesaid way, no matter single layer structure or double-decker, all connecting without the need to adopting to put up a bridge, reducing the complexity of production technology further, reducing manufacturing cost further.
Compared with prior art, tool has the following advantages in the present invention:
The making of the induction electrode of capacitance touch screen of the present invention is owing to being by offering groove and the lotion embedding conductive nano-particles forms conductive yarn, do not need to adopt the method for carrying out high temperature plated film on substrate to carry out, thus make capacitance touch screen have higher flexibility ratio in material, structure, process choice, reduce the manufacturing cost of capacitance touch screen further.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment one capacitance touch screen;
Fig. 2 is the partial enlarged drawing of part A in Fig. 1;
Fig. 3 is the partial enlarged drawing of part B in Fig. 2;
Fig. 4 is the sectional view along C-C in Fig. 3;
Fig. 5 a-Fig. 5 g is the schematic diagram in embodiment one, groove offered by glass substrate and form conductive yarn;
Fig. 6 is the structural representation of embodiment two capacitance touch screen;
Fig. 7 is the partial enlarged drawing of D part in Fig. 6;
Fig. 8 is the schematic diagram that in the embodiment of the present invention two, perimeter circuit is external;
Fig. 9 is the schematic diagram of the reeded plastic base of injection moulding belt in embodiment two;
Figure 10 a-10c is the schematic diagram forming conductive yarn in embodiment two;
Figure 11 is the structural representation of embodiment three capacitance touch screen;
Figure 12 is the close-up schematic view of E part in Figure 11;
Figure 13 a-Figure 13 e is the schematic diagram forming groove in embodiment four on photosensitive resin layer and form conductive yarn;
Figure 14 a-Figure 14 e is the schematic diagram forming groove in embodiment five on photosensitive resin layer and form conductive yarn.
Embodiment
Be described further below in conjunction with accompanying drawing and the preferred embodiment of the present invention.
Embodiment one
As Figure 1-Figure 4, this capacitance touch screen, comprise glass substrate 1, two of glass substrate 1 is provided with arrangement of electrodes district 2 on the surface, arrangement of electrodes district is provided with many grooves 3, the lotion 4(such as nano carbon particle of conductive nano-particles is filled with in groove 3, nanometer gold silver particle etc.), the mutual knot of lotion 4 of the conductive nano-particles in each bar groove 3 connects and forms conductive yarn 5, conductive yarn 5 forms the induction electrode of capacitance touch screen by netted tile mode, the first induction electrode 6 is formed on a surface of glass substrate 1, the second induction electrode 7 is formed on another surface of glass substrate 1.
For the first electrode, as shown in figs 5 a-g, its manufacture method comprises the steps:
1), as shown in Figure 5 a, at surface coating one deck photosensitive resin layer 8 of glass substrate 1, the photosensitive resin layer of positivity is adopted;
(2), as shown in Fig. 5 b, 5c, the thread pattern in the electrode designed, perimeter circuit is produced on exposed plate, on photosensitive resin layer 8, forms strip hollow slots 9 by the exposure of exposed plate and certain developing method;
(3), as fig 5d; under the protection of photosensitive resin layer 8, adopt glass etching liquid this surface to glass substrate 1 to etch; form etching bath 10 on this surface of glass substrate thus, wherein, this etching can at hydrofluorite (HF) or ammonium bifluoride (NH
4hF
2) middle realization, also can etch, such as, at sulfur hexafluoride (SF by using plasma
6) discharge plasma in realize.
(4), as depicted in fig. 5e, adopt certain liquid medicine to soak, rinse, take off photosensitive resin layer, thus be only left the etching bath 10 of glass baseplate surface;
(5), as shown in figure 5f, at the lotion 4 of the conductive nano-particles such as this surface of glass substrate 1 coating one deck nano-sized carbon slurry, carbon nano-tube slurry or nanometer silver paste, in coating procedure, the lotion 4 of conductive nano-particles flows into and embeds son in etching bath 10;
(6), as shown in fig. 5g, by cleaning or the method for polishing, remove the lotion 4 of the most of conductive nano-particles on this surface, only stay and embed etching bath 10(groove 3) in the lotion of partially conductive nano particle, make to embed etching bath 10(groove 3) in the lotion 4 of partially conductive nano particle be interconnected to form conductive yarn 5.
Wherein, the solidification of the lotion 4 of conductive nano-particles can be carried out after step (5), also can carry out after step (6), the lotion 4 of the conductive nano-particles on surface can be made after step (6) to be more prone to wipe.
Embodiment two
As Figure 6-Figure 8, be adopted as the structure of integrated capacitive touch screen, its substrate adopts plastic base 11, its induction electrode is produced on the back side of plastic base 11, and plastic base 11 also serves as the effect of fender simultaneously, arrangement of electrodes district 12 is arranged on the back side of plastic base 11, induction electrode adopts complementary triangle design, arrangement of electrodes district 12 is provided with many grooves 13, (with reference to Fig. 3, Fig. 4) be filled with the lotion 4(such as nano carbon particle of conductive nano-particles in groove 13, nanometer gold silver particle, the concatenator etc. of nano carbon particle), the lotion 4 of the conductive nano-particles in each bar groove 13 is interconnected and form conductive yarn 5, conductive yarn 5 forms the induction electrode of capacitance touch screen by netted tile mode, the first induction electrode 16 and the second induction electrode 17 is formed at the back side of plastic base.The escutcheon of one deck periphery can also be covered at the periphery in plastic base 1 arrangement of electrodes district, when escutcheon is black, the lotion of conductive nano-particles should adopt the nano-sized carbon of black to starch, and when escutcheon is white, the silver that the lotion of conductive nano-particles is suitable for adopting color partially white is starched or nanometer silver paste.As shown in Figure 8, perimeter circuit 18 can be connected to surface by through hole 19 through escutcheon 20, through hole also adopt the lotion 4 of the color conductive nano-particles corresponding with escutcheon carry out conducting, induction electrode is connected to the surface of escutcheon 20 by through hole 19, can connect out by external circuit 21 again.Its manufacture method comprises the steps:
(1), as shown in Figure 9, the method adopting high-precision injection molding shaping forms plastic base 11, and forms groove 13 on a surface of plastic base 11 simultaneously;
(2), as shown in Figure 10 a-Figure 10 c, at the lotion 4 of the conductive nano-particles such as this surface of plastic base 11 coating one deck nano-sized carbon slurry, carbon nano-tube slurry or nanometer silver paste, in coating procedure, the lotion 4 of conductive nano-particles flows into and embeds son in groove 13;
(3) method of scouring or polishing, is passed through, remove the lotion 4 of the most of conductive nano-particles on this surface, only leave the lotion 4 of the conductive nano-particles embedded in groove 13 part, make the lotion 4 of the partially conductive nano particle embedded in groove 13 be interconnected to form conductive yarn 5.
As shown in Figure 9, wherein, in step (1), general employing one side is the injection mold 23 of electroformed mould 22, the surface of this electroformed mould 22 has made by the method for electroforming the convex line 24 corresponding to groove 13 pattern in advance, thus when injection moulding, define groove 13 at the back side of plastic base 11.
Embodiment three
When other parts are all identical with embodiment two, its difference is: as Figure 11, shown in Figure 12, the first arrangement of electrodes district 31 of multiple same direction extension is provided with on the surface at one of plastic base 11, and be arranged in the second arrangement of electrodes district 32 of each the first side, arrangement of electrodes district 31, first arrangement of electrodes district 31, second arrangement of electrodes district 32 is equipped with many grooves 33, in groove 33 filled conductive nano particle lotion 4 after, the lotion 4 of the conductive nano-particles in each the first arrangement of electrodes district 31 upper groove 33 forms the first induction electrode 34, the lotion 4 of the conductive nano-particles in each the second arrangement of electrodes district 32 upper groove 33 forms the second induction electrode 35.
Embodiment four
Capacitance touch screen can adopt any one structure of above-described embodiment one to embodiment three, wherein substrate comprises glass substrate 1 or plastic base 11, and the photosensitive resin layer 41 be coated on glass substrate 1 or plastic base 11, groove 42 is the hollow slots 43 on photosensitive resin layer 41.
As shown in Figure 13 a-Figure 13 e, its corresponding manufacture method comprises the steps:
(1), at least one surface of glass substrate 1 or plastic base 11, one deck photosensitive resin layer 41 is applied;
(2), on photosensitive resin layer 41, the hollow slots 43 with linear is formed by the method for exposure, development;
(3), on photosensitive resin layer 41, apply the lotion 4 of one deck conductive nano-particles, make the lotion 4 of partially conductive nano particle embed hollow slots 43(groove 42) in;
(4) lotion 4 of the most of conductive nano-particles on photosensitive resin layer 41, is removed, only stay and embed hollow slots 43(groove 42) in the lotion 4 of partially conductive nano particle, make to embed hollow slots 43(groove 42) in the lotion 4 of partially conductive nano particle be interconnected to form conductive yarn 5.
Embodiment five
When other parts are all identical with embodiment five, its difference is: groove 42 is the impression groove 44 on photosensitive resin layer 41.
As shown in Figure 14 a-Figure 14 e, its corresponding manufacture method comprises the steps:
(1), at least one surface of glass substrate 1 or plastic base 11, one deck photosensitive resin layer 41 is applied;
(2), adopt a pressing mold 45 being manufactured with convex epirelief in advance mutually to compress with photosensitive resin layer 41, photosensitive resin layer 41 is formed impression groove 44;
(3), by irradiating ultraviolet light, photosensitive resin layer 41 is solidified through glass substrate 1;
(4), remove pressing mold 45, the impression groove 44 on photosensitive resin layer 41 is groove 42;
(5), on photosensitive resin layer 41, apply the lotion 4 of one deck conductive nano-particles, make the lotion 4 of partially conductive nano particle embed in (impression groove 44) groove 42;
(6) lotion 4 of the most of conductive nano-particles on photosensitive resin layer 41, is removed, only leave the lotion 4 of the partially conductive nano particle in embedding (impression groove 44) groove 42, make the lotion 4 of the partially conductive nano particle embedded in (impression groove 44) groove 42 be interconnected to form conductive yarn 5.
In addition; it should be noted that, the specific embodiment described in this instructions, its each several part title etc. can be different; all equivalences of doing according to structure, feature and the principle described in inventional idea of the present invention or simple change, be included in the protection domain of patent of the present invention.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment; only otherwise depart from structure of the present invention or surmount this scope as defined in the claims, protection scope of the present invention all should be belonged to.
Claims (4)
1. a capacitance touch screen, comprise at least one hard transparent substrate, it is characterized by: described substrate comprises glass substrate or plastic base, and the photosensitive resin layer be coated on glass substrate or plastic base, at least one surface of substrate is provided with arrangement of electrodes district, arrangement of electrodes district is provided with many grooves, groove is the hollow slots on photosensitive resin layer, the lotion of conductive nano-particles is filled with in groove, the lotion of the conductive nano-particles in each bar groove company of knot and form conductive yarn mutually, conductive yarn forms the induction electrode of capacitance touch screen by netted tile mode.
2. a capacitance touch screen, comprise at least one hard transparent substrate, it is characterized by: described substrate comprises glass substrate or plastic base, and the photosensitive resin layer be coated on glass substrate or plastic base, at least one surface of substrate is provided with arrangement of electrodes district, arrangement of electrodes district is provided with many grooves, groove is the impression groove on photosensitive resin layer, the lotion of conductive nano-particles is filled with in groove, the lotion of the conductive nano-particles in each bar groove company of knot and form conductive yarn mutually, conductive yarn forms the induction electrode of capacitance touch screen by netted tile mode.
3. a manufacture method for capacitance touch screen as claimed in claim 1, is characterized by and comprise the steps:
(1), at least one surface of glass substrate or plastic base, one deck photosensitive resin layer is applied;
(2), on photosensitive resin layer, the hollow slots with linear is formed by the method for exposure, development;
(3), on photosensitive resin layer, apply the lotion of one deck conductive nano-particles, make the lotion of partially conductive nano particle embed in groove;
(4), the lotion of the most of conductive nano-particles removed on photosensitive resin layer, only leave the lotion of the partially conductive nano particle embedded in groove, make the lotion of the partially conductive nano particle embedded in groove be interconnected to form conductive yarn.
4. a manufacture method for capacitance touch screen as claimed in claim 2, is characterized by and comprise the steps:
(1), at least one surface of glass substrate or plastic base, one deck photosensitive resin layer is applied;
(2), adopt one to be manufactured with the pressing mold of convex epirelief in advance and photosensitive resin layer compresses mutually, photosensitive resin layer is formed impression groove;
(3), by irradiating ultraviolet light, photosensitive resin layer is solidified;
(4), remove pressing mold, the impression groove on described photosensitive resin layer is groove;
(5), on photosensitive resin layer, apply the lotion of one deck conductive nano-particles, make the lotion of partially conductive nano particle embed in groove;
(6), the lotion of the most of conductive nano-particles removed on photosensitive resin layer, only leave the lotion of the partially conductive nano particle embedded in groove, make the lotion of the partially conductive nano particle embedded in groove be interconnected to form conductive yarn.
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| CN201310093085.8A CN103123564B (en) | 2013-03-22 | 2013-03-22 | A kind of capacitance touch screen and manufacture method thereof |
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| CN103294270A (en) * | 2013-05-30 | 2013-09-11 | 南昌欧菲光科技有限公司 | Monolayer multiple-point touch conducting film and producing method thereof |
| CN103309506A (en) * | 2013-05-30 | 2013-09-18 | 南昌欧菲光科技有限公司 | One-layer multi-point touch control conductive film and manufacturing method thereof |
| CN103425374A (en) * | 2013-07-31 | 2013-12-04 | 南昌欧菲光科技有限公司 | Touch screen body structure, touch display screen and touch key-press device |
| CN104020887A (en) * | 2014-05-30 | 2014-09-03 | 南昌欧菲光科技有限公司 | Touch screen |
| CN104020884A (en) * | 2014-05-30 | 2014-09-03 | 南昌欧菲光科技有限公司 | Touch substrate and manufacturing method thereof |
| CN104020888A (en) * | 2014-05-30 | 2014-09-03 | 南昌欧菲光科技有限公司 | Touch screen |
| CN104021845A (en) * | 2014-05-30 | 2014-09-03 | 南昌欧菲光科技有限公司 | Transparent conductor |
| CN104020889A (en) * | 2014-05-30 | 2014-09-03 | 南昌欧菲光科技有限公司 | Touch substrate and manufacturing method thereof |
| CN104020890B (en) * | 2014-05-30 | 2017-11-21 | 南昌欧菲光科技有限公司 | Touch-screen of the touch base plate with its preparation method and using the touch base plate |
| CN105204673B (en) * | 2014-06-12 | 2019-03-01 | 宸鸿科技(厦门)有限公司 | Touch panel |
| CN106155392A (en) * | 2015-04-16 | 2016-11-23 | 南昌欧菲光科技有限公司 | Intelligence wearable device, touch screen and preparation method thereof |
| CN105045456A (en) * | 2015-09-07 | 2015-11-11 | 张家港康得新光电材料有限公司 | Metal grid transparent conductive body, preparation method thereof and capacitive touch screen |
| CN105045455A (en) * | 2015-09-07 | 2015-11-11 | 张家港康得新光电材料有限公司 | Metal grid transparent conducting film, preparation method thereof and capacitive touch screen |
| FR3053116B1 (en) * | 2017-01-14 | 2018-08-24 | Nanomade Concept | SENSOR AND TOUCH SCREEN WITH ENVIRONMENTAL COMPENSATION, PARTICULARLY IN TEMPERATURE |
| CN109991772B (en) * | 2019-03-29 | 2023-03-14 | 广州国显科技有限公司 | Display panel film structure and preparation process thereof |
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