CN103092411A - Touch screen, manufacturing method thereof and display device - Google Patents
Touch screen, manufacturing method thereof and display device Download PDFInfo
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- CN103092411A CN103092411A CN201310009424XA CN201310009424A CN103092411A CN 103092411 A CN103092411 A CN 103092411A CN 201310009424X A CN201310009424X A CN 201310009424XA CN 201310009424 A CN201310009424 A CN 201310009424A CN 103092411 A CN103092411 A CN 103092411A
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Abstract
The invention discloses a touch screen, a manufacturing method of the touch screen and a display device to achieve the touch screen which is simpler in structure and manufacturing process. The touch screen comprises a substrate, a plurality of first electrodes, a plurality of second electrodes, a shading layer, first insulating layers, electric conduction connecting wires, electric connection leading wires and a second insulating layer. The first electrodes are formed on the substrate, positioned in a touch area and distributed along a first direction, the second electrodes are formed on the substrate, positioned in a touch area and distributed along a second direction, the shading layer is formed on the substrate and positioned in a frame area, and a first insulating layer is positioned between each two electrode units in the first electrodes, made of the same material as the shading layer and arranged in the same layer as the shading layer. The electric conduction connecting wires are formed on the substrate, positioned on the first insulating layers, and used for connecting adjacent electrode units in the first electrodes, the electric connection leading wires are positioned on the shading layer and connected with a touch driving electrode and a touch induction electrode, and the second insulating layer is formed on the substrate and covers the whole substrate.
Description
Technical field
The present invention relates to the display technique field, relate in particular to a kind of touch-screen and preparation method thereof, display device.
Background technology
In the display technique field, contact panel is used more and more extensive in the touching display screen technical field as a kind of new input media.The touch-control input mode of contact panel (Touch Panel) comprises resistance-type, condenser type, optical profile type, sound wave type, electromagnetic type etc.Wherein, capacitance type touch-control panel has that the reaction time is fast, fiduciary level is good and the durability advantages of higher.From with the classification of the integration mode of display device, touch-screen comprises at least embedded (In Cell) and two kinds of external hanging types (Add on).
The structure of external hanging type touch-screen generally comprises two-layer at least; be touch-control glass (Touch Sensor) and cover glass (Cover Glass), the product that touch-control glass and cover glass integrate is called monolithic glass touch-screen (One glass solution).Namely make the conductive film layer of concrete certain pattern in a side of cover glass.The monolithic glass touch-screen not only possesses intensity, the security of cover glass, also has touch controllable function simultaneously concurrently.Touch drive electrode and the touch sensible electrode of monolithic glass touch-screen are positioned at same layer, and both overlapping zone separates with insulation course, in specific implementation process, belong to same and touch the mode that drive electrode or touch sensible electrode make contact by gap bridge and connect.
Usually, touch-screen comprises touch area and frame region.The touch area is corresponding with the viewing area of display device, and frame region is corresponding with the outer peripheral areas of display device.Frame region is equipped with the conductive lead wire that touches drive electrode and touch sensible electrode.
One of structure of common monolithic glass touch-screen as shown in Figure 1, comprise and be formed on the black light shield layer 11 that is positioned at frame region on glass substrate 10, be formed on the first insulation course 12 that is positioned on glass substrate 10 on black light shield layer 11, be formed on the touch drive electrode 13 that is positioned at the touch area on glass substrate 10 and the touch sensible sub-electrode (not shown in figure 1) of separating, be formed on the second insulation course 14 between adjacent touch sensible sub-electrode on glass substrate 10; Be formed on the connecting line 15 that is positioned at the adjacent touch sensible sub-electrode of connection on the second insulation course 14 on glass substrate 10 and be positioned at frame region connection each touch the conductive lead wire 16 of drive electrode 13 and touch sensible electrode; be formed on the effect that the 3rd insulation course 17, the three insulation courses 17 that cover whole glass substrate on glass substrate 10 play the whole touch-screen of protection.Also be included on the 3rd insulation course 17 and make via hole, expose conductive lead wire 16.Due to connecting line 15 and the same layer setting of conductive lead wire 16, namely forming with in a technique.Therefore, touch-screen shown in Figure 1 comprises seven layers, completes in six composition techniques.For pursuing light, thin, the simple touch-screen of technological process, the structure of existing touch-screen is also more complicated, and the touch-screen thickness of making is thicker, and technological process is simple not.
Summary of the invention
The embodiment of the present invention provides a kind of touch-screen and preparation method thereof, display device, in order to realize the more simple touch-screen of a kind of structure and manufacture craft.
The embodiment of the present invention provides a kind of touch-screen to comprise:
Substrate;
Be formed on many first electrodes that distribute along first direction that are positioned at the touch area on described substrate, and many second electrodes that distribute along second direction; Described the first electrode and the second electrode arrange with layer, and the first electrode comprises a plurality of separate electrode units, and described each electrode unit is between two the second electrodes of arbitrary neighborhood;
Be formed on the light shield layer that is positioned at frame region on described substrate, and in described the first electrode between adjacent two electrode units with described light shield layer with material and first insulation course that arranges with layer;
Be formed on being arranged on described the first insulation course the conductive connecting that is used for connecting the adjacent electrode unit of the first electrode on described substrate and being connected described light shield layer with described the first electrode be connected the conductive lead wire that electrode is connected;
Be formed on the second insulation course that covers whole substrate on described substrate.
Preferably, described light shield layer is black light shield layer or white light shield layer.
Preferably, described black light shield layer is resin black matrix light shield layer or the sub-light shield layer of carbon granule.
Preferably, described the first electrode and the second electrode are transparent metal oxide conductive electrode or nano silver wire conductive electrode.
Preferably, also comprise and be positioned on described the second insulation course the via hole that is used for exposing described conductive lead wire.
Preferably, described touch drive electrode and touch sensible electrode are respectively along two orthogonal direction cross arrangements.
The embodiment of the present invention provides a kind of method for making of touch-screen, comprises the following steps:
Adopt coating process to deposit the first conductive film layer on substrate, form many first electrode patterns that distribute along first direction by composition technique, and many second electrode patterns that distribute along second direction; The first electrode comprises a plurality of separate electrode units, and described each electrode unit is between two the second electrodes of arbitrary neighborhood;
Adopt coating process deposition one deck to cover the insulation course with interception of whole substrate on the substrate that is formed with described the first electrode and the second electrode, form at the light shield layer figure of frame region and form the first insulation course figure between two electrode units adjacent in described the first electrode by composition technique;
Deposition the second conductive film layer on the substrate that is formed with described light shield layer and the first insulation course, by composition technique form be positioned on described light shield layer with described the first electrode be connected the conductive lead wire figure that electrode is connected, and form the conductive connecting between two adjacent electrode units of connection on described the first insulation course;
Deposit by coating process the second insulation course that one deck covers whole substrate on the substrate that is formed with described conductive lead wire and conductive connecting.
Preferably, the insulation course with interception that described deposition one deck covers whole substrate is specially, and deposition one deck covers black light shield layer or the white light shield layer of whole substrate.
Preferably, deposition one deck black light shield layer is specially, deposition one deck resin black matrix light shield layer or the sub-light shield layer of carbon granule.
Preferably, after forming described the second insulation course, also comprise:
Zone corresponding with described conductive lead wire on described the second insulation course forms via hole.
The embodiment of the present invention also provides a kind of display device, comprises described touch-screen.
In sum, the touch-screen that the embodiment of the present invention provides, light shield layer and the first insulation course arrange with layer, and belong to commaterial, and be simple in structure, makes touch-screen thinner.That is to say with layer setting and complete with in a manufacture craft, particularly, by a plated film, mask, single exposure and a development, a photoetching and etching form, and the fabrication processing of touch-screen is simpler, saves cost.
Description of drawings
Fig. 1 is prior art touch-screen schematic cross-section;
The touch-screen schematic cross-section that Fig. 2 provides for the embodiment of the present invention;
The schematic flow sheet of the touch-screen that the making that Fig. 3 provides for the embodiment of the present invention is shown in Figure 2;
Fig. 4 is that the present invention is formed with the touch-screen vertical view that touches drive electrode and touch sensible electrode;
Fig. 5 be touch-screen shown in Figure 4 A-A ' to sectional view;
Fig. 6 is the touch-screen vertical view that the present invention is formed with light shield layer and the first insulation course;
Fig. 7 be touch-screen shown in Figure 6 A-A ' to sectional view;
Fig. 8 is the touch-screen vertical view that the present invention is formed with conductive lead wire and conductive connecting;
Fig. 9 be touch-screen shown in Figure 8 A-A ' to sectional view;
Figure 10 is the touch-screen vertical view that is formed with via hole.
Embodiment
The embodiment of the present invention provides a kind of touch-screen and preparation method thereof, display device, in order to realize the more simple touch-screen of a kind of structure and manufacture craft.
The monolithic glass touch-screen that the embodiment of the present invention provides adopts three times composition technique, form simple in structure, gentlier, thinner touch-screen.The prior art of comparing has been saved technological process, and light shield layer and the insulation course that touches drive electrode and touch sensible electrode that is used for insulating are completed with a composition technique, that is to say that the making material is identical, be made by plated film, single exposure development, an etching process.
Composition technique in the present invention generally comprises the processing steps such as photoresist coating, exposure, development, photoresist removal.
Need to prove that touch-screen provided by the invention is external hanging type (And on formula) touch-screen, touching drive electrode and touch sensible electrode is positioned on same substrate, touch drive electrode and touch sensible electrode along orthogonal direction cross arrangement, touching drive electrode and the figure of touch sensible electrode on substrate can be rhombus, rectangle or hexagon etc.
Referring to Fig. 2, the touch-screen that the embodiment of the present invention provides specifically comprises:
Be formed on many first electrodes that distribute along first direction that are positioned at the touch area on substrate 1, and many second electrodes 2 that distribute along second direction; The first electrode (not embodying in Fig. 2) and the second electrode 2 arrange with layer, and the first electrode comprises a plurality of separate electrode units, and each electrode unit insulate between two the second electrodes of arbitrary neighborhood and with described the second electrode 2 mutually;
Be formed on the light shield layer 4 that is positioned at frame region on substrate 1, and in the first electrode between adjacent two electrode units with light shield layer 4 with material and first insulation course 5 that arranges with layer;
Be formed on being arranged on the first insulation course 5 conductive connecting 6 that is used for connecting the adjacent electrode unit of the first electrode on substrate 1 and being connected light shield layer 4 with the first electrode be connected the conductive lead wire (Fig. 2 does not embody) that electrode 2 is connected; Conductive connecting 6 and conductive lead wire arrange with layer;
Be formed on the second insulation course 8 that covers whole substrate on substrate.
Described the first electrode can be for touching drive electrode, and described the second electrode is the touch sensible electrode;
Described the first electrode can be the touch sensible electrode, and described the second electrode is for touching drive electrode;
Described first direction is vertical with second direction, and first direction can be for laterally, and second direction is vertical; Perhaps first direction can be for vertically, and second direction is horizontal.
The below is take the first electrode as the touch sensible electrode, and the second electrode is for touching drive electrode, and first direction be laterally, and second direction be vertical technical scheme provided by the invention that illustrates.
Need to prove, same layer of the present invention arranges the structure that finger forms in a manufacture craft process, and also namely the structure fabrication material of same layer setting is identical, and not only simplified structure, also simplified manufacture craft.
Certainly, touching drive electrode and touch sensible electrode can the different layers setting, that is to say, first forms on substrate and touches drive electrode, rear formation touch sensible electrode.Conductive lead wire and conductive connecting also can the different layers settings, namely form by twice technique.Shown in Figure 2 is only preferred embodiment.
Preferably, also comprise and be positioned on the second insulation course the via hole that is used for exposing conductive lead wire.
Illustrate below by accompanying drawing the process that the embodiment of the present invention forms touch-screen.
Referring to Fig. 3, the touch-screen method for making integral body that the embodiment of the present invention provides comprises the following steps:
S11, employing coating process deposit the first conductive film layer on substrate, form many touch sensible electrode patterns that distribute along first direction by composition technique, and many touch drive electrode figures that distribute along second direction; The touch sensible electrode comprises a plurality of separate electrode units, and described each electrode unit touches between drive electrodes and insulate mutually with described touch drive electrode at two of arbitrary neighborhood.
S12, adopt coating process deposition one deck to cover the insulation course with interception of whole substrate on the substrate that is formed with described touch drive electrode and touch sensible electrode, form at the light shield layer figure of frame region and form the first insulation course figure between two electrode units adjacent in described touch sensible electrode by composition technique.
S13, on the substrate that is formed with described light shield layer and the first insulation course the deposition the second conductive film layer, be positioned at by the formation of composition technique the conductive lead wire figure that is connected with the touch sensible electrode with described touch drive electrode on described light shield layer, and form the conductive connecting that connects between two electrode units adjacent in the first electrode on described the first insulation course.
S14, deposit by coating process the second insulation course that one deck covers whole substrate on the substrate that is formed with described conductive lead wire and conductive connecting.
Described light shield layer can be black light shield layer or white light shield layer etc.
Described black light shield layer can be resin black matrix light shield layer or the sub-light shield layer of carbon granule etc.
Described white light shield layer can be white resin light shield layer etc.
Wherein, the resin black matrix light shield layer is fit to wet etching, and the sub-light shield layer of carbon granule is fit to dry etching.
Preferably, after forming described the second insulation course, also comprise: form the via hole that is positioned at zone corresponding with described conductive lead wire on described the second insulation course.
The below illustrates the forming process of touch-screen shown in Figure 3 from the technological process aspect.
Step 1: referring to Fig. 4, adopt hot vapour deposition method or magnetron sputtering method, the transparent conductive film layer of deposition one deck preset thickness on the glass substrate 1 of a cleaning, this transparent conductive film layer is indium-zinc oxide IZO, indium tin oxide ITO or nano silver wire layer.By techniques such as mask, exposure, development, photoetching, wet etchings, formation is positioned at the touch drive electrode 2 of touch area and the figure of touch sensible electrode 3; The touch area is as shown in dotted line frame in Fig. 4.As shown in Figure 4, touching drive electrode 2 longitudinally distributes; Touch sensible electrode 3 is along cross direction profiles, and touch sensible electrode 3 comprises a plurality of electrode units 31, and electrode unit 31 is separate, and insulate mutually with touch drive electrode 2.Belong to each electrode unit 31 of a touch sensible electrode 3 between two adjacent touch drive electrodes 2.
Step 2: the employing magnetron sputtering method deposits the insulation course with interception of preset thickness, for example resin black matrix light shield layer on substrate on the substrate 1 that is formed with touch drive electrode 2 shown in Figure 4 and touch sensible electrode 3; By the composition technique formation light shield layer that comprises frame region 4 figures and the first insulation course figure 5 of formation between adjacent two electrode units 31 as shown in Figure 6; The first insulation course figure 5 is between adjacent two electrode units 31 and cover touch drive electrode 2, guarantees to touch drive electrode 2 and insulate mutually with touch sensible electrode 3.Fig. 7 be touch-screen shown in Figure 6 A-A ' to schematic cross-section.
Step 3: as Fig. 8, adopt hot vapour deposition method or magnetron sputtering method, on touch-screen shown in Figure 6, the metallic diaphragm of deposition one deck preset thickness, this metallic diaphragm can be the metals such as aluminium, copper, molybdenum.By techniques such as mask, exposure, development, photoetching, wet etchings, formation is positioned at the conductive connecting 6 on the first insulation course 5, guarantee that adjacent electrode unit 31 is electrical connected, and formation is positioned at the conductive lead wire 7 of frame region, conductive lead wire 7 is used for being connected with touch sensible electrode 3 with touch drive electrode 2, each root touches the corresponding conductive lead wire 7 of drive electrode 2, the corresponding conductive lead wire 7 of each root touch sensible electrode 3.For the conductive lead wire of frame region is described, do not embody light shield layer in Fig. 8.Fig. 9 be touch-screen shown in Figure 8 A-A ' to schematic cross-section.
At this moment, the electrode unit 31 of touch sensible electrode 3 is connected by conductive connecting 6.
Step 4: as Fig. 2; adopt hot vapour deposition method or magnetron sputtering method; on touch-screen shown in Figure 9; the second insulation course 8 of deposition one deck preset thickness; this second insulation course 8 can be silicon dioxide layer or titanium dioxide nitrogen layer; hardness ratio is higher, and each functional film layer in the protection touch-screen is avoided external influence.
Step 5: referring to Figure 10, also form via hole 9 after forming the second insulation course 8, via hole 9 arranges and the conductive lead wire top, and via hole 9 guarantees that conductive lead wire 7 exposes, and is convenient to contact with flexible circuit board FPC, realizes the input of signal.
Can find out, the embodiment of the present invention can realize touch-screen by 5 steps at most, and technological process is simple.Be formed on touch-screen and comprise as shown in Figure 2 three layers, comparing has now by seven layers or six layers of touch-screen that structure enough becomes, and has greatly simplified device architecture, saves simultaneously technological process, has reduced the cost of manufacture of touch-screen.
In sum, the touch-screen that the embodiment of the present invention provides, light shield layer and the first insulation course arrange with layer, and belong to commaterial, and be simple in structure, makes touch-screen thinner.That is to say with layer setting and complete with in a manufacture craft, particularly, by a plated film, mask, single exposure and a development, a photoetching and etching form, and the fabrication processing of touch-screen is simpler, saves cost.
Obviously, those skilled in the art can carry out various changes and modification and not break away from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of claim of the present invention and equivalent technologies thereof, the present invention also is intended to comprise these changes and modification interior.
Claims (11)
1. a touch-screen, is characterized in that, comprising:
Substrate;
Be formed on many first electrodes that distribute along first direction that are positioned at the touch area on described substrate, and many second electrodes that distribute along second direction; Described the first electrode and the second electrode arrange with layer, and the first electrode comprises a plurality of separate electrode units, and described each electrode unit is between two the second electrodes of arbitrary neighborhood;
Be formed on the light shield layer that is positioned at frame region on described substrate, and in described the first electrode between adjacent two electrode units with described light shield layer with material and first insulation course that arranges with layer;
Be formed on being arranged on described the first insulation course the conductive connecting that is used for connecting the adjacent electrode unit of the first electrode on described substrate and being connected described light shield layer with described the first electrode be connected the conductive lead wire that electrode is connected;
Be formed on the second insulation course that covers whole substrate on described substrate.
2. touch-screen according to claim 1, is characterized in that, described light shield layer is black light shield layer or white light shield layer.
3. touch-screen according to claim 2, is characterized in that, described black light shield layer is resin black matrix light shield layer or the sub-light shield layer of carbon granule.
4. touch-screen according to claim 1, is characterized in that, described the first electrode and the second electrode are transparent metal oxide conductive electrode or nano silver wire conductive electrode.
5. touch-screen according to claim 1, is characterized in that, also comprises being positioned at the via hole that is used for exposing described conductive lead wire on described the second insulation course.
6. touch-screen according to claim 1, is characterized in that, described touch drive electrode and touch sensible electrode are respectively along two orthogonal direction cross arrangements.
7. the method for making of a touch-screen, is characterized in that, comprises the following steps:
Adopt coating process to deposit the first conductive film layer on substrate, form many first electrode patterns that distribute along first direction by composition technique, and many second electrode patterns that distribute along second direction; The first electrode comprises a plurality of separate electrode units, and described each electrode unit is between two the second electrodes of arbitrary neighborhood;
Adopt coating process deposition one deck to cover the insulation course with interception of whole substrate on the substrate that is formed with described the first electrode and the second electrode, form at the light shield layer figure of frame region and form the first insulation course figure between two electrode units adjacent in described the first electrode by composition technique;
Deposition the second conductive film layer on the substrate that is formed with described light shield layer and the first insulation course, by composition technique form be positioned on described light shield layer with described the first electrode be connected the conductive lead wire figure that electrode is connected, and form on described the first insulation course the conductive connecting between two electrode units adjacent in connection the first electrode;
Deposit by coating process the second insulation course that one deck covers whole substrate on the substrate that is formed with described conductive lead wire and conductive connecting.
8. method according to claim 7, is characterized in that, the insulation course with interception that described deposition one deck covers whole substrate is specially, and deposition one deck covers black light shield layer or the white light shield layer of whole substrate.
9. method according to claim 8, is characterized in that, deposition one deck black light shield layer is specially, deposition one deck resin black matrix light shield layer or the sub-light shield layer of carbon granule.
10. method according to claim 7, is characterized in that, after forming described the second insulation course, also comprises: zone corresponding with described conductive lead wire on described the second insulation course forms via hole.
11. a display device is characterized in that, comprises the described touch-screen of the arbitrary claim of claim 1-6.
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| CN201310009424XA CN103092411A (en) | 2013-01-10 | 2013-01-10 | Touch screen, manufacturing method thereof and display device |
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| CN201310009424XA CN103092411A (en) | 2013-01-10 | 2013-01-10 | Touch screen, manufacturing method thereof and display device |
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| CN103792711A (en) * | 2014-01-14 | 2014-05-14 | 京东方科技集团股份有限公司 | Touch display panel and manufacturing method thereof |
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| CN103792711A (en) * | 2014-01-14 | 2014-05-14 | 京东方科技集团股份有限公司 | Touch display panel and manufacturing method thereof |
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| US10409407B2 (en) | 2016-08-02 | 2019-09-10 | Boe Technology Group Co., Ltd. | Touch panel and display device |
| CN111479398A (en) * | 2019-01-23 | 2020-07-31 | 富泰华工业（深圳）有限公司 | Circuit board and preparation method thereof |
| CN110045863A (en) * | 2019-03-01 | 2019-07-23 | 上海天马微电子有限公司 | Touch panel and display device |
| CN110045863B (en) * | 2019-03-01 | 2022-04-29 | 上海天马微电子有限公司 | Touch panel and display device |
| WO2021169068A1 (en) * | 2020-02-28 | 2021-09-02 | 宸美（厦门）光电有限公司 | Touch-control panel, touch-control panel manufacturing method and touch-control panel apparatus |
| CN111625122A (en) * | 2020-05-08 | 2020-09-04 | 武汉华星光电半导体显示技术有限公司 | Touch control display device |
| CN111625122B (en) * | 2020-05-08 | 2024-01-12 | 武汉华星光电半导体显示技术有限公司 | Touch display device |
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