CN204155249U - Capacitive touch screen - Google Patents
Capacitive touch screen Download PDFInfo
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- CN204155249U CN204155249U CN201420453309.1U CN201420453309U CN204155249U CN 204155249 U CN204155249 U CN 204155249U CN 201420453309 U CN201420453309 U CN 201420453309U CN 204155249 U CN204155249 U CN 204155249U
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- touch screen
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Abstract
The utility model relates to technical field of flat panel display, particularly relates to a kind of capacitive touch screen.Described capacitive touch screen at least comprises: a substrate at least with a first surface; Be formed at multiple first electrode units on described first surface; By at least one bridging structure that the first electrode unit described in adjacent two is electrically connected, described bridging structure at least comprises one first functional layer, and the material making described first functional layer is opaque conductive compound.
Description
Technical field
The utility model relates to technical field of flat panel display, particularly relates to a kind of capacitive touch screen.
Background technology
Capacitive touch screen can be divided into surface capacitance type touch screen and projected capacitive touch screen.Surface capacitance type touch screen only can realize single-point touch, and projected capacitive touch screen is widely used in each electronic product because it can realize multi-point touch.
Projected capacitive touch screen is divided into again individual layer or two-layer equation, to have technique simple due to it for the projected capacitive touch screen of single-layer type, high and the touch-control sensitivity advantages of higher of transmitance and become main flow gradually, it mainly comprises substrate, the first sensing electrode layer, the second sensing electrode layer.First sensing electrode layer and the second sensing electrode layer are formed at the same surface of substrate simultaneously.First sensing electrode layer comprises many and is parallel to each other and the first induction electrode tandem spaced apart, second sensing electrode layer comprises many and is parallel to each other and the second induction electrode tandem spaced apart, and the first induction electrode tandem and the second projection of induction electrode tandem in the plane being parallel to substrate perpendicular.Each second induction electrode tandem is cut off for multiple second sensing unit by the first induction electrode tandem, and multiple second sensing units of same second induction electrode tandem are serially connected by bridging line, bridging line and the first sensing electrode tandem overlapping are insulated by collets and open.
In above-mentioned projected capacitive touch screen, described bridging line is often be made up of metal material.But metal material generally has reflective characteristic, namely extraneous light is through described bridging line, and described bridging line often can be seen by naked eyes, therefore, have impact on the appearance of capacitive touch screen greatly.
Utility model content
In view of this, the utility model provides a kind of capacitive touch screen being conducive to improving appearance.
The described capacitive touch screen that the utility model provides at least has the substrate of a first surface; Be formed at multiple first electrode units on described first surface; By at least one bridging structure that the first electrode unit described in adjacent two is electrically connected, described bridging structure at least comprises one first functional layer, and the material making described first functional layer is opaque conductive compound.
In the described capacitive touch screen that the utility model provides, described bridging structure also comprises one second functional layer, described second functional layer is formed on described first functional layer, described second functional layer is at least made up of the material with excellent conductive performance, and the projection on the first surface of described second functional layer is covered by the projection on the first surface of described first functional layer.
In the described capacitive touch screen that the utility model provides; described bridging structure also comprises one the 3rd functional layer; described 3rd functional layer is formed on described second functional layer; described 3rd functional layer is at least made up of the material with defencive function, described in lead compound be molybdena or nitrogen molybdena.
In the described capacitive touch screen that the utility model provides, described conductive compound is metal nitride.
In the described capacitive touch screen that the utility model provides, described metal material is molybdenum or chromium, and described metal nitride is molybdenum nitride or chromium nitride.
In the described capacitive touch screen that the utility model provides, described capacitive touch screen also comprises multiple second electrode unit, second connecting line and multiple collets, described second connecting line is electrically connected the second electrode unit described in adjacent two, described collets are formed on described second connecting line, described bridging structure is formed on described collets, described collets are greater than the surfaceness of the first surface of described substrate towards the surfaceness of the one side of described bridging structure, described first electrode unit is arranged along first direction, described second electrode unit is arranged along second direction.
In the described capacitive touch screen that the utility model provides, described first surface at least comprises first area and second area, described second area is at least positioned at the side of described first area and is adjacent to described first area, multiple described first electrode unit is formed on the first surface at place, described first area, and described capacitive touch screen also comprises the barrier bed on the first surface being formed in described second area place.
In the described capacitive touch screen that the utility model provides, described capacitive touch screen also comprises conductive lead wire, described conductive lead wire is formed at described second area and is positioned on described barrier bed, and described conductive lead wire and described bridging structure are made in the lump in same processing procedure.
In the described capacitive touch screen that the utility model provides, described first surface at least comprises first area and second area, described second area is at least positioned at the side of described first area and is adjacent to described first area, multiple described first electrode unit, 3rd electrode unit is formed on the first surface at place, described first area, described capacitive touch screen also comprises the barrier bed be formed on described second area, one insulation course and conductive trace layers, described barrier bed and described first functional layer are made in the lump in same processing procedure, described insulation course and described collets are made in the lump in same processing procedure, described conductive lead wire and described first electrode unit, 3rd electrode unit is made in the lump in same processing procedure.
In the described capacitive touch screen that the utility model provides, because described bridging structure at least comprises first functional layer be made up of opaque conductive compound, its light absorptive is stronger, therefore the reflective phenomenon that the bridging line of being only made up of metal material in prior art can be avoided to cause, thus improves the appearance of described capacitive touch screen.Again because described opaque conductive compound has the character of metal and pottery concurrently, therefore, itself and the first electrode unit, collets and the second functional layer be made up of metal material on it all have good bonding properties.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
The structural representation of the capacitive touch screen 100 of the better embodiment that Fig. 1 provides for the utility model;
Fig. 2 is for capacitive touch screen 100 shown in Fig. 1 is along a schematic cross-section in A-A direction;
The structural representation of the capacitive touch screen 200 of another better embodiment that Fig. 3 provides for the utility model;
Fig. 4 is for the capacitive touch screen 200 shown in Fig. 3 is along the schematic cross-section in B-B direction.
Embodiment
For the capacitive touch screen that the utility model provides is described, be described in detail below in conjunction with Figure of description and explanatory note.
Please refer to Fig. 1 and Fig. 2, the structural representation of capacitive touch screen 100 of its better embodiment provided for the utility model and the schematic cross-section along A-A direction, described capacitive touch screen 100 at least comprises a substrate 101, multiple first electrode unit 121, multiple second electrode unit 131, second connecting line 133, collets 140 and bridging structure 123.
Described substrate 101 at least has a first surface 101a, and in present embodiment, described first surface 101a is a plane, and at other embodiments, first surface can also be curved surface or irregular surface.Described substrate 101 can be made up of glass or flexible material.Described first surface 101a at least comprises first area and second area (not shown), and described second area is at least positioned at the side of described first area and is adjacent to described first area.In the present embodiment, described second area is surrounded on described first area.
Multiple described first electrode unit 121, multiple second electrode unit 131, multiple second connecting line 133 are formed on the first surface 101a at the place, first area of described substrate 101 simultaneously, and directly contact with described first surface 101a, two adjacent the second electrode units 131 are electrical connected by described second connecting line 133, multiple described first electrode unit 121 is arranged along first direction, and multiple described second electrode unit 131 is arranged along second direction.In present embodiment, described second electrode unit 131 of each row is a continuous print electrode tandem with described second connecting line 133, and described multiple first electrode units 121 of every a line are spaced apart by described electrode tandem.Described first electrode unit 121, second electrode unit 131 and the second connecting line 133 are made by the transparent conductive material such as material such as tin indium oxide, Graphene.In present embodiment, described first direction is vertical with second direction, and in other embodiments, described first direction and second direction also can be arranged according to other modes.
Described collets 140 are formed on described second connecting line 133, namely described collets 140 are between described second connecting line 133 and described bridging structure 123, described collets 140 and cover respectively adjacent to described second connecting line 133 two described in the part of the first electrode unit 121, described collets 140 are greater than the surfaceness of the first surface 101a of described substrate 101 towards the surfaceness of the one side of described bridging structure 123, it is conducive to described bridging structure 123 tack thereon, prevent described bridging structure 123 from coming off on described collets 140.The effect of described insulation course 140 is described bridging structure 123 and the second connecting line 133 are insulated.Described insulation course 140 can be SiO2/Si3N4 or epoxy resin material, as OC glue etc.
Described bridging structure 123 is formed on described collets 140.In present embodiment, described bridging structure 123 comprises the first functional layer 123a, the second functional layer 123b and the 3rd functional layer 123c.Described bridging structure 123 for connecting two first adjacent electrode units 121, and realizes the transmission of touching signals.In other embodiments, described bridging structure also can not comprise the second functional layer, or does not comprise the 3rd functional layer, also can only have the first functional layer.
Described first functional layer 123a is formed on described collets 140, and partially or completely covers described collets 140.The material making described first functional layer 123a is opaque conductive compound, and described conductive compound is metal nitride or metal oxide, and the method for making of described first functional layer 123a is for pass into nitrogen when splash-proofing sputtering metal material.In present embodiment, described conductive compound is molybdenum nitride (MoNx) or chromium nitride (GrNx), namely while splash-proofing sputtering metal molybdenum or chromium, passes into nitrogen.Described first functional layer 123a is while meeting conductive characteristic, and because it is opaque, and light absorptive is comparatively strong, therefore can not extraneous ray of reflecting, thus can improve appearance.Described first functional layer 123a had both had the character of pottery, there is again the character of metal, it is for by having for electrode material (comprising the second connecting line 133 and the first electrode unit 121) that ceramics based tin indium oxide forms, have good tack between described first functional layer 123a mono-aspect and insulation course 140, two adjacent part first electrode units 121, on the other hand with its on the second functional layer 123b of being made up of metal material also have good tack.In other embodiments, making and leading compound-material described in described first functional layer is molybdena or nitrogen molybdena.
Described second functional layer 123b is formed on described first functional layer 123a, described second functional layer 123b is at least made up of the material with excellent conductive performance, and the projection of described second functional layer 123b on described first surface 101a is covered by the projection of described first functional layer 123a on described first surface 101a.In present embodiment, described second functional layer 123b is made up of metallic aluminium, and described second functional layer 123b also can be made up of other conductive material.Described second functional layer 123b plays the effect of conduction in described bridging structure 123.
Described 3rd functional layer 123c is formed on described second functional layer 123b; described 3rd functional layer 123c is at least made up of the material with protective value; in present embodiment; described 3rd functional layer 123c is metal molybdenum; in other embodiments; described 3rd functional layer 123c also can be made up of the composite material of the oxide of other molybdenums, nitride or molybdenum, and the composite material of described molybdenum at least comprises one or more corrosion resistant metals in titanium, manganese, silver, platinum etc.Described 3rd functional layer 123c plays the effect of protection second functional layer 123b, prevents its not oxidized or corrosion.
Described capacitive touch screen 100 also comprises and is formed in barrier bed on described second area and conductive lead wire (not shown), described barrier bed is formed on the first surface 101a at described second area place, described conductive lead wire is formed on described barrier bed, and described conductive trace layers and bridging structure 123 are made in the lump in same processing procedure.The material making described barrier bed is black ink, and the material making described conductive lead wire is identical with the material making described bridging structure 123, or the material making described conductive lead wire is a part for the material making described bridging structure 123.During owing to forming described barrier bed, normally black ink is coated on the first surface 101a of described substrate 101, it inevitably has bubble or applies uneven improper phenomenon, again because described conductive lead wire is identical with the material of described bridging structure, first functional layer be made up of opaque conductive compound is comprised on described bridging structure, therefore, by described conductive lead wire and described bridging structure by identical material and make in the lump in same processing procedure can the defect of described capacitive touch screen 100 brought of the improper phenomenon of balance those.
In present embodiment, because described bridging structure 123 at least comprises a first functional layer 123a be made up of opaque conductive compound, its light absorptive is stronger, therefore the reflective phenomenon that the bridging line of being only made up of metal material in prior art can be avoided to cause, thus improves the appearance of described capacitive touch screen.Again because described opaque conductive compound has the character of metal and pottery concurrently, therefore, itself and the first electrode unit 121, collets 140 and the second functional layer 123b be made up of metal material on it all have good bonding properties.In addition, because the bridging structure 123 in present embodiment is made up of three functional layers, increase the cross-sectional area of described bridging structure, and in described bridging structure, there is metal material, therefore can reduce the impedance between adjacent two first electrode units.
As shown in Figure 3, Figure 4, the structural representation of the capacitive touch screen 200 of another better embodiment that provides of its utility model and described capacitive touch screen 200 are along the schematic cross-section in B-B direction.
Described capacitive touch screen 200 comprises the substrate 201 that at least has a first surface 201a, multiple first electrode unit 221, multiple 3rd electrode unit 231, the 3rd connecting line 233, collets 240 and bridging structure 223.Described 3rd electrode unit 231 of each row is a continuous print electrode tandem with described 3rd connecting line 233, and described multiple first electrode units 221 of every a line are spaced apart by described electrode tandem.Described bridging structure 223 comprises the first functional layer 223c, the second functional layer 223b and the 3rd functional layer 223a, and described bridging structure 223 is for connecting two adjacent electrode units 221, and described bridging structure 223 is insulated by insulation course 240 with connecting line 233.Described first electrode unit 221 is arranged along first direction, and described 3rd electrode unit 231 is arranged along third direction.
Described capacitive touch screen 200 is with the difference of the capacitive touch screen 100 shown in Fig. 1, Fig. 2, described bridging structure 223 is directly formed on the first surface 201a of substrate 201, described collets 240 are formed on described bridging structure 223, described 3rd connecting line 233 is formed on described collets 240, and described collets 240 are greater than the surfaceness of the first surface 201a of described substrate 201 towards the surfaceness of the one side of described 3rd connecting line 233.
Preferably, described capacitive touch screen 200 also comprises a barrier bed, an insulation course and a conductive trace layers (not shown), described first surface 201a at least comprises first area and second area, described second area is at least positioned at the side of described first area and is adjacent to described first area, and multiple described first electrode unit 221 is formed on the first surface 201a at place, described first area.Described barrier bed is formed on the first surface at described second area place, and described insulation course covers described barrier bed, and described conductive trace layers is formed on described barrier bed.
In present embodiment, described barrier bed and described first functional layer are made in the lump in same processing procedure, the extra patterning processes made needed for one deck barrier bed can be saved, therefore whole capacitive touch screen 200 only needs three patterning processes compared with the capacitive touch screen 100 shown in Fig. 1, thus simplifies Making programme.
In addition, the barrier bed of the capacitive touch screen 200 shown in Fig. 2, insulation course and a conductive trace layers all can adopt the method for making of capacitive touch screen 100 described in Fig. 1 to make.
The better embodiment of the capacitance type touch-control panel provided for the utility model above; the restriction to the utility model rights protection scope can not be interpreted as; those skilled in the art should know; without departing from the concept of the premise utility; also can do multiple improvement or replacement; these all improvement or replacement all should within the scope of rights protections of the present utility model, and namely rights protection scope of the present utility model should be as the criterion with claim.
Claims (10)
1. a capacitive touch screen, it at least comprises:
One substrate at least with a first surface;
Be formed at multiple first electrode units on described first surface;
By at least one bridging structure that the first electrode unit described in adjacent two is electrically connected, described bridging structure at least comprises one first functional layer, and the material making described first functional layer is opaque conductive compound.
2. capacitive touch screen as claimed in claim 1, it is characterized in that: described bridging structure also comprises one second functional layer, described second functional layer is formed on described first functional layer, described second functional layer is at least made up of the material with excellent conductive performance, and the projection on the first surface of described second functional layer is covered by the projection on the first surface of described first functional layer.
3. capacitive touch screen as claimed in claim 2; it is characterized in that: described bridging structure also comprises one the 3rd functional layer; described 3rd functional layer is formed on described second functional layer; described 3rd functional layer is at least made up of the material with defencive function, described in lead compound be molybdena or nitrogen molybdena.
4. capacitive touch screen as claimed in claim 1, is characterized in that: described conductive compound is metal nitride.
5. capacitive touch screen as claimed in claim 4, it is characterized in that: described metal material is molybdenum or chromium, described metal nitride is molybdenum nitride or chromium nitride.
6. capacitive touch screen as claimed in claim 1, it is characterized in that: described capacitive touch screen also comprises multiple second electrode unit, second connecting line and multiple collets, described second connecting line is electrically connected the second electrode unit described in adjacent two, described collets are formed on described second connecting line, described bridging structure is formed on described collets, described collets are greater than the surfaceness of the first surface of described substrate towards the surfaceness of the one side of described bridging structure, described first electrode unit is arranged along first direction, described second electrode unit is arranged along second direction.
7. capacitive touch screen as claimed in claim 1, it is characterized in that: described first surface at least comprises first area and second area, described second area is at least positioned at the side of described first area and is adjacent to described first area, multiple described first electrode unit is formed on the first surface at place, described first area, and described capacitive touch screen also comprises the barrier bed on the first surface being formed in described second area place.
8. capacitive touch screen as claimed in claim 7, it is characterized in that: described capacitive touch screen also comprises conductive lead wire, described conductive lead wire is formed at described second area and is positioned on described barrier bed, and described conductive lead wire and described bridging structure are made in the lump in same processing procedure.
9. capacitive touch screen as claimed in claim 1, it is characterized in that: described method for making also comprise form multiple first electrode unit on the first surface while form multiple 3rd electrode unit, the step of multiple collets and the 3rd connecting line, described 3rd connecting line is electrically connected the 3rd electrode unit described in adjacent two, described bridging structure is formed on described first surface, described collets are formed on described bridging structure, described 3rd connecting line is formed on described collets, described collets are greater than the surfaceness of the first surface of described substrate towards the surfaceness of the one side of described 3rd connecting line, described first electrode unit is arranged along first direction, described 3rd electrode unit is arranged along third direction.
10. capacitive touch screen as claimed in claim 9, it is characterized in that: described first surface at least comprises first area and second area, described second area is at least positioned at the side of described first area and is adjacent to described first area, multiple described first electrode unit, 3rd electrode unit is formed on the first surface at place, described first area, described capacitive touch screen also comprises the barrier bed be formed on described second area, one insulation course and conductive trace layers, described barrier bed and described first functional layer are made in the lump in same processing procedure, described insulation course and described collets are made in the lump in same processing procedure, described conductive lead wire and described first electrode unit, 3rd electrode unit is made in the lump in same processing procedure.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420453309.1U CN204155249U (en) | 2014-08-12 | 2014-08-12 | Capacitive touch screen |
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| CN201420453309.1U CN204155249U (en) | 2014-08-12 | 2014-08-12 | Capacitive touch screen |
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| CN204155249U true CN204155249U (en) | 2015-02-11 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104818466A (en) * | 2015-05-05 | 2015-08-05 | 深圳南玻伟光导电膜有限公司 | Preparation method of Mo/Al/Mo metal film |
| CN105335029A (en) * | 2014-08-12 | 2016-02-17 | 深圳莱宝高科技股份有限公司 | Capacitive touch screen and manufacturing method therefor |
| CN109285452A (en) * | 2017-07-19 | 2019-01-29 | 群创光电股份有限公司 | Show equipment with and preparation method thereof |
-
2014
- 2014-08-12 CN CN201420453309.1U patent/CN204155249U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105335029A (en) * | 2014-08-12 | 2016-02-17 | 深圳莱宝高科技股份有限公司 | Capacitive touch screen and manufacturing method therefor |
| CN104818466A (en) * | 2015-05-05 | 2015-08-05 | 深圳南玻伟光导电膜有限公司 | Preparation method of Mo/Al/Mo metal film |
| CN109285452A (en) * | 2017-07-19 | 2019-01-29 | 群创光电股份有限公司 | Show equipment with and preparation method thereof |
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