CN103092414A - External type touch screen, manufacturing method thereof and display device - Google Patents
External type touch screen, manufacturing method thereof and display device Download PDFInfo
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- CN103092414A CN103092414A CN2013100178796A CN201310017879A CN103092414A CN 103092414 A CN103092414 A CN 103092414A CN 2013100178796 A CN2013100178796 A CN 2013100178796A CN 201310017879 A CN201310017879 A CN 201310017879A CN 103092414 A CN103092414 A CN 103092414A
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Abstract
The invention discloses an external type touch screen, a manufacturing method thereof and a display device. The touch screen is simple in structure and manufacturing process. The touch screen comprises a base plate, a bridge connection line, an insulation layer, a touch drive electrode, a touch sensing electrode and a protective layer. The bridge connection line is formed on the base plate and is placed in a touch zone. The bridge connection line is placed at a crossed zone of the touch drive electrode and the touch sensing electrode which are to be formed. The insulation layer is formed on the base plate. The insulation layer at least covers the middle portion of the bridge connection line and is exposed out of two ends of the bridge connection lien. The touch drive electrode and the touch sensing electrode are formed on the base plate and are arrayed in a crossing mode. The protective layer is covered on the touch drive electrode and the touch sensing electrode. The touch drive electrode or the touch sensing electrode is disconnected on the crossed zone to form a plurality of touch drive sub-electrodes or a plurality of touch sensing sub-electrodes. The touch drive sub-electrodes or the touch sensing sub-electrodes are electrically connected through the bridge connection line.
Description
Technical field
The present invention relates to the display technique field, relate in particular to a kind of external hanging type 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 is generally, and makes in the touch area of substrate touch drive electrode and the touch sensible electrode of realizing touch function, makes in the frame region of substrate the lead-in wire that touches drive electrode and touch sensible electrode.Touching drive electrode and touch sensible electrode can be arranged on same layer or be arranged on different layers.
In order to produce thinner touch-screen, usually, touch drive electrode and the touch sensible electrode of external hanging type touch-screen are arranged on same layer., comprise being formed on touch drive electrode 11 and the touch sensible electrode that is positioned at the touch area on substrate 10 for existing external hanging type touch screen structure as Fig. 1; Touch drive electrode 11 and touch sensible electrode and be positioned at same layer and cross arrangement, the touch sensible electrode drive electrode 11 that is touched is cut apart, be the touch sensible electrode with the zone disconnection that touches drive electrode 11 and intersects, the touch sensible electrode after cutting apart comprises a plurality of touch sensible sub-electrodes 121.Also comprise, the first insulation course 13 between adjacent two touch sensible sub-electrodes 121, and be positioned at the wire 14 that is used for connecting adjacent two touch sensible sub-electrodes 121 on the first insulation course 13; Also comprise the lead-in wire 15 that is positioned at frame region; And the protective seam 16 that covers whole substrate 1; Be provided with via hole on protective seam 16, be convenient to go between and 15 expose, be connected with chip or IC.
The touch-screen of different structure, fabrication processing is different, and the technology for manufacturing touch screen flow process of same structure also may be different.In order to produce the more simple lower-cost touch-screen of structure, the fabrication processing of touch-screen is extremely important.The fabrication processing of touch-screen shown in Figure 1 is as follows:
Step 1: deposition the first conductive film layer on substrate 10 forms lead-in wire 15 and touch sensible sub-electrode 121 and touches drive electrode 11 through composition technique;
Step 2: deposition the first insulation course on substrate 10 is touching on drive electrode 11 and the first insulation course 13 between adjacent two touch sensible sub-electrodes 121 through the formation of composition technique;
Step 3: deposit the second conductive film layer on substrate 10, be formed for connecting the wire 14 of adjacent two touch sensible sub-electrodes 121 through composition technique;
Step 4: deposition the second insulation course as protective seam 16, forms the via hole of the setting area that is positioned at 15 tops that go between through composition technique on substrate.
Manufacture craft by above-mentioned making touch-screen can be found out, comprises composition technique four times, and manufacturing process is more complicated.
In addition, prior art generally also is included in after having made the touch-screen step 4 and forms one deck conductive film layer on substrate, and this conductive film layer is used for static and discharges (Electro-Static Discharge, ESD), namely electrostatic protection layer.
In sum, existing touch screen structure is simple not, and manufacture craft is simple not.
Summary of the invention
The embodiment of the present invention provides a kind of external hanging type 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 method for making of a kind of external hanging type touch-screen that the embodiment of the present invention provides comprises:
In the touch area of substrate, place, the intersection region of touch drive electrode to be formed and touch sensible electrode forms bridging line;
Form insulation course being formed with on the substrate of described bridging line, this insulation course covers the center section of described bridging line at least, and exposes the two end portions of described bridging line;
By a composition technique, be formed with touch drive electrode and the touch sensible electrode that forms cross arrangement on the substrate of described insulation course, and covering the protective seam on described touch drive electrode and touch sensible electrode; And touch drive electrode or touch sensible electrode and be broken as a plurality of touch driven element electrodes or a plurality of touch sensible sub-electrode in described intersection region; Each touches the driven element electrode or each touch sensible sub-electrode is electrically connected by described bridging line.
Preferably, by a composition technique, form described touch drive electrode and touch sensible electrode, and cover the protective seam on described touch drive electrode and touch sensible electrode, be specially:
Be formed with deposition one deck conductive film layer on the substrate of described insulation course;
Be formed with deposition one layer insulating on the substrate of described conductive film layer;
Simultaneously described conductive film layer and insulation course are carried out photoresist coating, exposure, development, photoresist removal technological process, form the figure of described touch drive electrode and touch sensible electrode and protective seam.
Preferably, when forming described bridging line on substrate, also comprise: form the lead-in wire that is positioned at the substrate frame region, described bridging line and described lead-in wire are by forming with a composition technique.
Preferably, when formation is positioned at insulation course in described bridging line, also comprise: form the insulation course that is positioned on described lead-in wire;
When forming described touch drive electrode and touch sensible electrode, also comprise: form the electrostatic protection layer that is positioned at described frame region, described touch drive electrode, touch sensible electrode and electrostatic protection layer are by forming with a composition technique.
Preferably, when formation is positioned at the protective seam of touch area, also comprise: form the protective seam that is positioned at frame region, above formation on this protective seam is positioned at described lead-in wire, be used for exposing the via hole of lead-in wire simultaneously.
A kind of external hanging type touch-screen that the embodiment of the present invention provides comprises:
Substrate;
Be formed on the bridging line that is positioned at the touch area on described substrate, this bridging line is positioned at the place, intersection region of touch drive electrode to be formed and touch sensible electrode;
Be formed on the insulation course on described substrate, this insulation course covers the center section of described bridging line at least, and exposes the two end portions of described bridging line;
Be formed on touch drive electrode and the touch sensible electrode of cross arrangement on described substrate, and cover the protective seam on described touch drive electrode and touch sensible electrode; Wherein said touch drive electrode or touch sensible electrode are broken as a plurality of touch driven element electrodes or a plurality of touch sensible sub-electrode in described intersection region; Each touches the driven element electrode or each touch sensible sub-electrode is electrically connected by described bridging line.
Preferably, also comprise: be positioned at a plurality of leads of substrate frame region, this lead-in wire arranges with layer with described bridging line.
Preferably, described insulation course also comprises: be positioned at the part that the substrate frame region covers described lead-in wire; Insulation course part in described bridging line and the same layer setting of the insulation course part that is positioned at the top that goes between.
Preferably, also comprise: be positioned at the electrostatic protection layer that frame region and described touch drive electrode and touch sensible electrode arrange with layer.
Preferably, also comprise: be positioned at the protective seam on described electrostatic protection layer; And being positioned on this protective seam the via hole corresponding with described lead-in wire position, this via hole guarantees that described lead-in wire exposes.
The embodiment of the present invention also provides a kind of display device, comprises described touch-screen.
In sum, the external hanging type touch-screen that the embodiment of the present invention provides touches drive electrode and touch sensible electrode and arranges with layer, and the protective seam that touches on drive electrode and touch sensible electrode is completed with in a composition technique.Namely remove technological process and form by a photoresist coating, exposure, development, photoresist; the pattern of protective seam is identical with the image that touches drive electrode and touch sensible electrode; save technological process, the touch-screen thickness of producing with the method is thinner, and structure is simpler.
Description of drawings
Fig. 1 is prior art touch-screen schematic cross-section;
The touch-screen schematic top plan view that Fig. 2 provides for the embodiment of the present invention;
The touch screen structure schematic diagram that is formed with the protective seam pattern that Fig. 3 provides for the embodiment of the present invention;
Fig. 4 be touch-screen shown in Figure 2 A-A ' to sectional view;
The touch screen structure schematic cross-section that is formed with the electrostatic protection layer that Fig. 5 provides for the embodiment of the present invention;
The method flow schematic diagram of the touch-screen that the formation that Fig. 6 provides for the embodiment of the present invention is shown in Figure 5;
The touch-screen schematic top plan view that is formed with bridging line and lead-in wire that Fig. 7 provides for the embodiment of the present invention;
Fig. 8 is that touch-screen shown in Figure 7 is formed with the insulation course schematic top plan view that covers bridging line and frame region.
Embodiment
The embodiment of the present invention provides a kind of external hanging type 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 touch-screen that the embodiment of the present invention provides adopts three times composition technique, form technological process and structure simple and gentlier, thinner touch-screen.
Composition technique in the present invention generally comprises the processing steps such as photoresist coating, exposure, development, photoresist removal.
Need to prove that the touch-screen that the embodiment of the present invention provides touches drive electrode and touch sensible electrode and is positioned on same substrate and with layer setting, touches drive electrode and touch sensible electrode along orthogonal direction cross arrangement.At the place, intersection region, touch drive electrode or touch sensible electrode and be broken as a plurality of touch driven element electrodes or touch sensible sub-electrode.And, touch drive electrode, touch sensible electrode, and covering touches drive electrode and the touch sensible electrode protecting layer is completed by same composition technique.
Illustrate below by accompanying drawing the technical scheme that the embodiment of the present invention provides.Be broken as a plurality of touch sensible sub-electrodes as the example explanation take the touch sensible electrode.
Referring to Fig. 2, the external hanging type touch-screen schematic top plan view that the embodiment of the present invention provides specifically comprises:
Be formed on the bridging line 2 in touch area on substrate 1 (as the zone in dotted line frame in Fig. 2), this bridging line 2 is positioned at the place, intersection region of touch drive electrode to be formed and touch sensible electrode, is used for connecting each touch sensible sub-electrode;
Be formed on the insulation course 4 on substrate 1, this insulation course 4 covers the center section of bridging line 2 at least, exposes two end portions; The frame region of these insulation course 4 all right covered substrates 1; Perhaps other zones of the touch area of all right covered substrate 1, need only the two end portions that guarantees bridging line 2 and expose, and is convenient to be electrical connected with touch driven element electrode get final product.
Be formed on substrate 1 many touch drive electrodes 5 of longitudinally arranging and many along transversely arranged touch sensible electrode; and be positioned at the protective seam that touches on drive electrode 5 and touch sensible electrode, and this protective seam only covers touch drive electrode 5 and touch sensible electrode in the touch area.And the touch sensible electrode is broken as a plurality of touch sensible sub-electrodes 61 at place, described intersection region; As Fig. 2, each touch sensible sub-electrode 61 is electrical connected with bridging line 2; The touch sensible sub-electrode 61 that is positioned at delegation is electrical connected with bridging line 2, consists of a complete touch sensible electrode.
Preferably, as shown in Figure 2, this touch-screen can also comprise: the lead-in wire 3 that is positioned at substrate 1 upper side frame zone; Lead-in wire 3 is used for touching drive electrode and touch sensible electrode and guides to other circuit outside the substrate touch area, for example on flexible PCB or on chip IC.
Touch-screen also comprises: be positioned at the protective seam that frame region covers lead-in wire.As shown in Figure 3, be the figure of protective seam 7 on substrate 1, comprise being positioned at the part that touches on drive electrode and touch sensible sub-electrode, and the part that is positioned at frame region.The protective seam of frame region guarantees that the lead-in wire on substrate exposes, and therefore, as shown in Figure 3, also comprises the via hole 8 of the position corresponding with described lead-in wire.
In specific implementation process; touch drive electrode 5 shown in Figure 2 and touch sensible sub-electrode 61 and protective seam 7 and via hole 8 shown in Figure 3 are forming with in a composition technique; therefore also saved technological process, the external hanging type touch-screen of making is lighter, thin, and structure is simpler.
Fig. 4 be touch-screen shown in Figure 2 A-A ' to sectional view, the below specifically describes the structure of lower touch-screen shown in Figure 2 again.
Touch-screen comprises: substrate 1, the bridging line 2 that arranges with layer on substrate 1 and lead-in wire 3;
The insulation course 4 of part in the middle of being positioned in each bridging line 2, as Fig. 4, insulation course 4 along horizontal width less than bridging line 2 along horizontal length.
Be positioned at the touch sensible sub-electrode 61 that is electrical connected with bridging line 2 on substrate 1, with the touch drive electrode 5 of touch sensible sub-electrode 61 with layer setting.
Also comprise: cover touch sensible sub-electrode 61, touch drive electrode 5 and 3 the protective seam 7 of going between.This protective seam is insulation course.
Preferably, referring to Fig. 5, touch-screen shown in Figure 4 also comprises: be positioned at frame region, with an electrostatic protection layer 9 that touches drive electrode 5 and the same layer setting of touch sensible sub-electrode 61; This electrostatic protection layer 9 is the unsettled setting conductive layer of (namely not being connected with any power supply); this conductive layer insulate by insulation course 4 mutually with the lead-in wire 3 that is positioned at its below; be that insulation course 4 on substrate 1 also comprises the part that is positioned at frame region, guarantee that lead-in wire 3 insulate mutually with electrostatic protection layer 9.
Electrostatic protection layer 9 shown in Figure 5 is forming with in a composition technique with touching drive electrode 5 and touch sensible sub-electrode 61, namely when making touch drive electrode 5 and touch sensible sub-electrode 61, forms electrostatic protection layer 9, has saved technological process.Because prior art need to be when forming touch drive electrode and touch sensible sub-electrode; the conductive layer that will be positioned at frame region etches away; after formation is positioned at the protective seam that touches on drive electrode and touch sensible sub-electrode, also to form the electrostatic protection layer that is positioned on protective seam by extra manufacture craft.Utilization of the present invention is positioned at the conductive layer of frame region as the electrostatic protection layer, can discharge well touch-screen because of friction or contact the static that causes.Prevent that static from causing damage to touch-screen or the device that is arranged in the display panel of touch-screen below.Electrostatic protection layer of the present invention arranges with touching the same layer of drive electrode and touch sensible sub-electrode, and compare existing electrostatic protection layer and touch drive electrode are positioned at the structure of different layers, and touch-screen is thinner.All inadequate simple questions of existing touch screen structure and technique have been solved.
Preferably, described lead-in wire and bridging line can be metals, such as being the metals such as copper, iron, aluminium and molybdenum.
The below is from the manufacturing process of the above-mentioned touch-screen of technological process aspect explanation the present invention, and referring to Fig. 6, method for making integral body comprises the following steps:
S11, form by plated film and composition technique the bridging line that is positioned at the touch area on substrate, and form the lead-in wire that is positioned at frame region.
S12, form by plated film and composition technique and be positioned at described bridging line center section and be positioned at insulation course on described lead-in wire; In the middle of being positioned in bridging line, expose at the two ends of the insulation course of part assurance bridging line.
S13, by double coating process, and composition technique forms and touches drive electrode and touch sensible electrode, covers the protective seam that touches drive electrode and touch sensible electrode, and the via hole that is used for exposing lead-in wire.Described touch sensible electrode or touch drive electrode are broken as a plurality of touch sensible sub-electrodes or a plurality of touch driven element electrode.Each touch sensible sub-electrode or each driven element electrode are electrical connected by described bridging line.
The below is broken as a plurality of touch sensible sub-electrodes as example take the touch sensible electrode, and the detailed forming process of touch-screen shown in Figure 5 is described.
Then pass through composition technique formation touch drive electrode 5 and touch sensible sub-electrode 61 as shown in Figure 2, and form the conductive layer that is positioned at frame region as shown in Figure 5, this conductive layer is the electrostatic protection layer 9 of electrostatic prevention.Electrostatic protection layer 9 insulate mutually with touch drive electrode 5 and touch sensible sub-electrode 61.Also form the protective seam 7 that touches on drive electrode 5 and touch sensible sub-electrode 61 that is positioned at shown in Figure 3, and form via hole 8.
Completed the manufacturing process of touch-screen by above-mentioned three steps.
By step 3 as can be known, touch drive electrode and touch sensible electrode and electrostatic protection layer and arrange with layer, and complete by a composition technique, the structure of touch-screen is more simple and technological process is simpler.And the via hole that is positioned on protective seam forms simultaneously with touch drive electrode and touch sensible electrode, saves technological process.
The embodiment of the present invention also provides a kind of display device, comprises described external hanging type touch-screen.
In sum; the touch-screen that the embodiment of the present invention provides touches drive electrode and touch sensible electrode and arranges with layer, only covers the protective seam that touches drive electrode and touch sensible electrode in the touch area; identical, simple in structure with the pattern that touches drive electrode and touch sensible electrode.
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. the method for making of an external hanging type touch-screen, is characterized in that, the method comprises:
In the touch area of substrate, place, the intersection region of touch drive electrode to be formed and touch sensible electrode forms bridging line;
Form insulation course being formed with on the substrate of described bridging line, this insulation course covers the center section of described bridging line at least, and exposes the two end portions of described bridging line;
By a composition technique, be formed with touch drive electrode and the touch sensible electrode that forms cross arrangement on the substrate of described insulation course, and covering the protective seam on described touch drive electrode and touch sensible electrode; And touch drive electrode or touch sensible electrode and be broken as a plurality of touch driven element electrodes or a plurality of touch sensible sub-electrode in described intersection region; Each touches the driven element electrode or each touch sensible sub-electrode is electrically connected by described bridging line.
2. method according to claim 1, is characterized in that, by a composition technique, forms described touch drive electrode and touch sensible electrode, and cover the protective seam on described touch drive electrode and touch sensible electrode, is specially:
Be formed with deposition one deck conductive film layer on the substrate of described insulation course;
Be formed with deposition one layer insulating on the substrate of described conductive film layer;
Simultaneously described conductive film layer and insulation course are carried out photoresist coating, exposure, development, photoresist removal technological process, form the figure of described touch drive electrode and touch sensible electrode and protective seam.
3. method according to claim 1, is characterized in that, when forming described bridging line on substrate, also comprises: form the lead-in wire that is positioned at the substrate frame region, described bridging line and described lead-in wire are by forming with a composition technique.
4. method according to claim 3, is characterized in that, when formation is positioned at insulation course in described bridging line, also comprises: form the insulation course that is positioned on described lead-in wire;
When forming described touch drive electrode and touch sensible electrode, also comprise: form the electrostatic protection layer that is positioned at described frame region, described touch drive electrode, touch sensible electrode and electrostatic protection layer are by forming with a composition technique.
5. method according to claim 4; it is characterized in that, when formation is positioned at the protective seam of touch area, also comprise: form the protective seam that is positioned at frame region; above formation on this protective seam is positioned at described lead-in wire, be used for exposing the via hole of lead-in wire simultaneously.
6. an external hanging type touch-screen, is characterized in that, comprising:
Substrate;
Be formed on the bridging line that is positioned at the touch area on described substrate, this bridging line is positioned at the place, intersection region of touch drive electrode to be formed and touch sensible electrode;
Be formed on the insulation course on described substrate, this insulation course covers the center section of described bridging line at least, and exposes the two end portions of described bridging line;
Be formed on touch drive electrode and the touch sensible electrode of cross arrangement on described substrate, and only cover the protective seam on described touch drive electrode and touch sensible electrode in the touch area; Wherein said touch drive electrode or touch sensible electrode are broken as a plurality of touch driven element electrodes or a plurality of touch sensible sub-electrode in described intersection region; Each touches the driven element electrode or each touch sensible sub-electrode is electrically connected by described bridging line.
7. touch-screen according to claim 6, is characterized in that, also comprises: be positioned at a plurality of leads of substrate frame region, this lead-in wire arranges with layer with described bridging line.
8. touch-screen according to claim 7, is characterized in that, described insulation course also comprises: be positioned at the part that the substrate frame region covers described lead-in wire; Insulation course part in described bridging line and the same layer setting of the insulation course part that is positioned at the top that goes between.
9. touch-screen according to claim 8, is characterized in that, also comprises: be positioned at the electrostatic protection layer that frame region and described touch drive electrode and touch sensible electrode arrange with layer.
10. touch-screen according to claim 9, is characterized in that, also comprises the protective seam that is positioned on described electrostatic protection layer; And being positioned on this protective seam the via hole corresponding with described lead-in wire position, this via hole guarantees that described lead-in wire exposes.
11. a display device is characterized in that, comprises the described touch-screen of the arbitrary claim of claim 1-5.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310017879.6A CN103092414B (en) | 2013-01-17 | 2013-01-17 | A kind of external hanging type touch-screen and preparation method thereof, display device |
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| CN201310017879.6A CN103092414B (en) | 2013-01-17 | 2013-01-17 | A kind of external hanging type touch-screen and preparation method thereof, display device |
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| CN109917957A (en) * | 2019-02-27 | 2019-06-21 | 上海天马微电子有限公司 | Touch panel, manufacturing method and repairing method thereof and touch device |
| US11360619B2 (en) | 2019-02-27 | 2022-06-14 | Shanghai Tianma Micro-electronics Co., Ltd. | Touch panel, fabrication method, repair method, and touch device |
| CN109917957B (en) * | 2019-02-27 | 2023-11-21 | 上海天马微电子有限公司 | Touch panel, manufacturing method and repairing method thereof and touch device |
| CN112020699A (en) * | 2019-03-29 | 2020-12-01 | 京东方科技集团股份有限公司 | Touch screen, touch display screen and display device |
| CN112020699B (en) * | 2019-03-29 | 2024-04-09 | 京东方科技集团股份有限公司 | Touch screen, touch display screen and display device |
| CN112198995A (en) * | 2020-11-11 | 2021-01-08 | 深圳市华星光电半导体显示技术有限公司 | External hanging type touch sensing device and manufacturing method thereof |
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| CN103092414B (en) | 2015-12-02 |
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