CN104808884A - Capacitive touch screen and terminal device containing capacitive touch screen - Google Patents
Capacitive touch screen and terminal device containing capacitive touch screen Download PDFInfo
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- CN104808884A CN104808884A CN201510232183.4A CN201510232183A CN104808884A CN 104808884 A CN104808884 A CN 104808884A CN 201510232183 A CN201510232183 A CN 201510232183A CN 104808884 A CN104808884 A CN 104808884A
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- touch screen
- capacitive touch
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Abstract
The invention provides a capacitive touch screen which comprises a visible area and decorative layers (in micron-level thickness) located on the periphery of the visible area, wherein slope buffer layers (in micron-level thickness) are arranged on opposite inner side walls of the decorative layers; the included angles of the outer surfaces of the slope buffer layers and the horizontal plane are acute angles at 20-40 degrees. According to the capacitive touch screen, the slope buffer layers are arranged on the inner side walls of the decorative layers, so that the slope buffer layers can be served as gentle slopes for transiting between the upper surface of the visible area and the upper surfaces of the decorative layers, a wire of a conducting film (in nanometer-level thickness) thinner than the decorative layers can be smoothly paved along the slope buffer layers, and the problems of wire breaking and circuit disconnection caused by ultra-large breaking difference of the inner side edges of the decorative layers are avoided. Besides, the slope buffer layers are made of heat-insulating temperature-resisting materials, so that a gas overflow phenomenon of the decorative layer material is greatly reduced, the quality of the film is increased and the optical properties of the decorative layers are enhanced.
Description
Technical field
The present invention relates to the technical field of touch-screen, especially, relate to a kind of capacitive touch screen and comprise the terminal device of this touch-screen.
Background technology
See Fig. 1, the decorative layer 2 of monobasal formula capacitive touch screen is arranged on the surrounding of the visible area 1 (View Area is called for short VA) of substrate 3, and its edge and visible area 1 exist certain height fall (offset).When the lead-in wire of conducting film extends to decorative layer by VA district, usually cause broken string in this offset region, cause the generation of the functional bad problems such as open circuit.
Particularly decorative layer is white or colored decorative layer, because the thickness of this decorative layer is thicker, causes the height of offset 4 higher; And when this decorative layer is ink for screen printing, will more precipitous offset be formed, to such an extent as to the lead-in wire of the thinner conducting film of relative thickness more climbs to decorative layer in Nan You VA district continuously, causes the functional bad probabilities such as open circuit higher.
For solving offset problem, see Fig. 2, after formation decorative layer, photosensitive material shaped material can be coated with form local slope cushion 5 above decorative layer 2 and visible area 1, to fill and lead up whole offset region, solving this offset and cause functional bad problem.But inclined-plane cushion 5 can bring following problem again:
1. the material of inclined-plane cushion is when high temperature film sputtering and coating, a large amount of excessive gas (out-gassing) phenomenons can be produced, the ambiance of plated film cavity is caused to be destroyed, the film quality plating out is caused to be deteriorated: rete square resistance lack of homogeneity, optics penetrance is low, is difficult to reach designing requirement.
2., in the production technology of multicoating, the excessive gas phenomenon that inclined-plane cushioning layer material is serious, plates out destroying follow-up coating process the film come.
3. large-area use cushioning layer material, causes the problem that material usage is large, cost is high.
The problem that decorative layer easily causes broken string is climbed up for solving conductive electrode, Chinese patent CN201310010685 gives a solution: dielectric ink 12 (43) is made perforate, through at perforate filled conductive material 44 And, conductive material 44 is connected with conductive metal electrode 45, conductive electrode 42 can be connected, to solve disconnection problem with the conductive electrode 45 conductance general character through the conductive material 44 in perforate.But there is limitation equally in this solution:
1. conductive material 44 must be consistent with the outward appearance colourity of dielectric ink 12, and product appearance aberration not so will be caused bad, can see tapping conductive oil ink dot in product front.This design can only be used in the dielectric ink design of black at present, because the alternative of conductive material is relatively low, mostly uses the electrically conductive ink of conduction carbon paste (black) at present, the decorative layer design of black of can arranging in pairs or groups.
The conductive material that 2, must extend to through tapping below decorative layer due to conductive electrode is electrically connected, and this design easily sees the pattern of conductive electrode in the decorative layer region in front, affects the appearance of touch-screen, such as common ITO etched mark.
Summary of the invention
The object of the invention is the inclined-plane cushion providing a kind of capacitive touch screen, to solve the offset problem between decorative layer and visible area.
For achieving the above object, the invention provides a kind of capacitive touch screen, comprise visible area and the decorative layer being positioned at visible area surrounding, the medial surface that described decorative layer is relative arranges inclined-plane cushion, and the angle acute angle of described inclined-plane cushion outside surface and surface level is 20 ~ 40 degree.
Preferably, the angle of described inclined-plane cushion outside surface and surface level is 20 ~ 30 degree.
Preferably, the distance of described inclined-plane buffer-layer surface and decorative layer medial surface is 0.5 ~ 30um.
Preferably, described inclined-plane cushion is that dielectric ink or acrylate material or epoxy acrylate material are formed.
Preferably, described inclined-plane cushion covers the upper surface of decorative layer.
Preferably, conducting film wiring layer is set at the upper surface of described inclined-plane cushion.
Preferably, conductive trace layers is set at the upper surface of described conducting film wiring layer.
The application also provides the terminal device containing above-mentioned capacitive touch screen, and the display screen of described terminal device, control flow, man-machine interaction screen are described capacitive touch screen.
Preferably, described terminal device is mobile phone or panel computer.
The present invention has following beneficial effect:
The present invention arranges inclined-plane cushion on the medial surface of decorative layer, to make between visible area upper surface and decorative layer upper surface by this inclined-plane layer, as gentle slope transition, the lead-in wire of conducting film to be laid along this inclined-plane, avoid the problems such as broken string, open circuit.
Further, compared with whole flatness layer, the material usage on this product significantly reduces, and effectively reduces material cost.Gas phenomenon of overflowing material under vacuum coating environment also significantly reduces, and can improve film quality.And reduce due to the excessive gas phenomenon of product, the excessive gas phenomenon in the follow-up film-plating process in multi-coating technology reduces too, can not damage problem to the film plated out, and significantly improves product yield.
In addition, because decorative layer can be divided into black and non-black two class:
A. the decorative layer of black can use photosensitive material or ink material; Optical concentration (OD, the OpticalDensity) characteristic of black-colored photosensitive material is better, can reach the optical characteristics of OD=4 at the thickness of 1um ~ 3um Zhi Inter.The optical concentration of black ink materials is poor compared to black-colored photosensitive material, reach the optical characteristics of OD=4, and ink thickness must reach the thickness of 6 ~ 20um.And the application increases the inclined-plane cushion that dielectric ink is made on decorative layer, improve the optical characteristics of decorative layer, especially in the product design of black ink, effect can be obvious.
B. if the decorative layer of non-black, such as white; Generally can only select white ink at present, but the non-constant of the optical concentration of white ink, and reach the optical characteristics of OD=4, then whole decorative layer thickness must up to the thickness of 25 ~ 40um, thus offset is also larger relatively.Therefore effect of this case becomes more important in the decorative layer design of non-black.
In addition, because the solid content particle of ink material is larger, can be rendered as sags and crests on ink pellet surface microcosmic after using the decorative layer of ink material, this sags and crests is formed in the lithographic process etching process of electrode at subsequent conductive film, can cause the risk of short open circuit.Covered the design of decorative layer upper surface by the application with inclined-plane cushion, this sags and crests planarization, this problem can be solved.
Except object described above, feature and advantage, the present invention also has other object, feature and advantage.Below with reference to figure, the present invention is further detailed explanation.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the section difference structural representation of touch-screen visible area and decorative layer;
Fig. 2 is the flatness layer structural representation of prior art;
Fig. 3 is the inclined-plane Rotating fields schematic diagram of the preferred embodiment of the present invention;
Fig. 4 is the touch-screen complete structure schematic diagram of the preferred embodiment of the present invention;
Wherein, 1, visible area, 2, decorative layer, 3, substrate, 4, offset, 5, flatness layer, 6, inclined-plane cushion, 7, conducting film wiring layer, 8, conducting film trace layer.
Embodiment
Below in conjunction with accompanying drawing, case study on implementation of the present invention is described in detail, but the multitude of different ways that the present invention can limit according to claim and cover is implemented.
See Fig. 3, the invention provides a kind of capacitive touch screen, comprise visible area 1 and the decorative layer 2 being positioned at visible area 1 surrounding, the medial surface that described decorative layer 2 is relative arranges inclined-plane cushion 6, the angle of described inclined-plane cushion 6 outside surface and surface level is 20 ~ 40 degree, be preferably 20 ~ 30 degree, make the lead-in wire of conducting film have enough climbings to support.
Inclined-plane cushion 6 surface is 0.5 ~ 30um with the distance (i.e. the horizontal directive tendency of inclined-plane cushion) of decorative layer medial surface, can provide climbing holding power, suitably can also strengthen the optical characteristics of decorative layer.
Inclined-plane layer 6 can be dielectric ink or acrylate material or epoxy acrylate material and forms.
In the particular embodiment, inclined-plane cushion 6 can cover the upper surface of decorative layer, to form complete coated entirety, suppresses the excessive gas of decorative layer 2 in sputter process to play, simultaneously can the surface of planarization decorative layer 2.
Specific implementation process can be:
1. decorative layer is set on substrate; Gold-tinted processing procedure or silk-screen processing procedure can be adopted;
2. the inclined-plane cushion extended from VA district toward decorative layer is set; Gold-tinted processing procedure can be adopted; Material coating process in this gold-tinted processing procedure can use ink jet printing (InkJet Printing Process), to reach the effect of saving material.
3. make conductive wiring layer (ex.ITO wiring layer); ITO conductive film can be produced through vacuum splashing and plating, and define ITO wiring layer pattern with photoetching process etch process.
4. make conductive lead wire (ex.Metal trace layer); Metal conductive film can be produced through vacuum coating, and define metal lead wire pattern with photoetching process etch process.
A kind of capacitive touch screen, its core concept is:
(1) if decorative layer black, photonasty high impedance (> 10 is usually adopted
8Ω/) material realization, thickness is 1.0 ~ 1.8 μm, or high impedance (> 10
8Ω/) realization of high temperature resistant (TGA < 5%at 300 DEG C of * 1Hour, TGA:ThermogravimetricAnalysis, thermogravimetric analysis) ink material, thickness is 6 ~ 20 μm; ; Inclined-plane cushion adopts high impedance (> 10
8Ω/) high temperature resistant (TGA < 3%at 300 DEG C of * 1Hour, TGA:Thermogravimetric Analysis, thermogravimetric analysis) dielectric ink or acrylate material or epoxy acrylate material realize, thickness is 0.8 ~ 2.0 μm, and the angle acute angle of its outside surface and surface level is 20 ~ 40 degree; Conducting film wiring layer is low thickness (usual < 150nm) Low ESR (usual < 200 Ω/) material; Conducting film trace layer is low thickness (usual < 400nm) Low ESR (usual < 1.0 Ω/) material;
(2) if decorative layer non-black, high impedance (> 10 is usually adopted
8Ω/) realization of high temperature resistant (TGA < 5%at 300 DEG C of * 1Hour, TGA:Thermogravimetric Analysis, thermogravimetric analysis) ink material, thickness is 25 ~ 40 μm; Inclined-plane cushion adopts high impedance (> 10
8Ω/) high temperature resistant (TGA < 3%at 300 DEG C of * 1Hour, TGA:Thermogravimetric Analysis, thermogravimetric analysis) dielectric ink or acrylate material or epoxy acrylate material realize, thickness is 0.8 ~ 2.0 μm, and the angle acute angle of its outside surface and surface level is 20 ~ 40 degree; Conducting film wiring layer is low thickness (usual < 150nm) Low ESR (usual < 200 Ω/) material; Conducting film trace layer is low thickness (usual < 400nm) Low ESR (usual < 1.0 Ω/) material.
The application also provides the terminal device containing above-mentioned capacitive touch screen, and the display screen of described terminal device, control flow, man-machine interaction screen are described capacitive touch screen.Described terminal device can be mobile phone or panel computer.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a capacitive touch screen, comprise visible area and the decorative layer being positioned at visible area surrounding, it is characterized in that, the medial surface that described decorative layer is relative arranges inclined-plane cushion, the angle of described inclined-plane cushion outside surface and surface level is 20 ~ 40 degree.
2. a kind of capacitive touch screen according to claim 1, is characterized in that, the angle of described inclined-plane cushion outside surface and surface level is 20 ~ 30 degree.
3. a kind of capacitive touch screen according to claim 1, is characterized in that, the distance of described inclined-plane buffer-layer surface and decorative layer medial surface is 0.5 ~ 30um.
4. a kind of capacitive touch screen according to claim 1, is characterized in that, described inclined-plane cushion is that dielectric ink or acrylate material or epoxy acrylate material are formed.
5. a kind of capacitive touch screen according to claim 1, is characterized in that, described inclined-plane cushion is covered in the upper surface of decorative layer.
6. a kind of capacitive touch screen according to claim 5, is characterized in that, arranges conducting film wiring layer at the upper surface of described inclined-plane cushion.
7. a kind of capacitive touch screen according to claim 6, is characterized in that, arranges conductive trace layers at the upper surface of described conducting film wiring layer.
8. the terminal device containing capacitive touch screen described in any one of claim 1-7, the display screen of described terminal device, control flow, man-machine interaction screen are described capacitive touch screen.
9. terminal device according to claim 8, is characterized in that, described terminal device is mobile phone or panel computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510232183.4A CN104808884A (en) | 2015-05-08 | 2015-05-08 | Capacitive touch screen and terminal device containing capacitive touch screen |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510232183.4A CN104808884A (en) | 2015-05-08 | 2015-05-08 | Capacitive touch screen and terminal device containing capacitive touch screen |
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| CN104808884A true CN104808884A (en) | 2015-07-29 |
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| CN201510232183.4A Pending CN104808884A (en) | 2015-05-08 | 2015-05-08 | Capacitive touch screen and terminal device containing capacitive touch screen |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105159502A (en) * | 2015-09-24 | 2015-12-16 | 蓝思科技（长沙）有限公司 | Touch panel and manufacturing method therefor |
| CN111239883A (en) * | 2020-02-19 | 2020-06-05 | 京东方科技集团股份有限公司 | Polarizer, LCD screen and OLED screen |
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| CN203773507U (en) * | 2014-01-27 | 2014-08-13 | 宸鸿科技(厦门)有限公司 | Touch display component |
| JP2014203161A (en) * | 2013-04-02 | 2014-10-27 | 大日本印刷株式会社 | Front protection plate for display unit with electrode, and display unit |
| CN104571668A (en) * | 2013-10-26 | 2015-04-29 | 祥达光学（厦门）有限公司 | Touch panel and manufacturing method thereof |
| CN204557444U (en) * | 2015-05-08 | 2015-08-12 | 蓝思科技（长沙）有限公司 | A kind of capacitive touch screen and comprise the terminal device of this touch-screen |
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2015
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102830880A (en) * | 2012-08-21 | 2012-12-19 | 深圳市宝明科技股份有限公司 | Non-overlapped integral capacitive touch screen with ITO (indium tin oxide) layer and manufacturing method of novel non-overlapped integral capacitive touch screen |
| JP2014203161A (en) * | 2013-04-02 | 2014-10-27 | 大日本印刷株式会社 | Front protection plate for display unit with electrode, and display unit |
| CN104571668A (en) * | 2013-10-26 | 2015-04-29 | 祥达光学（厦门）有限公司 | Touch panel and manufacturing method thereof |
| CN203773507U (en) * | 2014-01-27 | 2014-08-13 | 宸鸿科技(厦门)有限公司 | Touch display component |
| CN204557444U (en) * | 2015-05-08 | 2015-08-12 | 蓝思科技（长沙）有限公司 | A kind of capacitive touch screen and comprise the terminal device of this touch-screen |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105159502A (en) * | 2015-09-24 | 2015-12-16 | 蓝思科技（长沙）有限公司 | Touch panel and manufacturing method therefor |
| CN105159502B (en) * | 2015-09-24 | 2018-05-15 | 蓝思科技（长沙）有限公司 | A kind of contact panel and preparation method thereof |
| CN111239883A (en) * | 2020-02-19 | 2020-06-05 | 京东方科技集团股份有限公司 | Polarizer, LCD screen and OLED screen |
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Application publication date: 20150729 |
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| RJ01 | Rejection of invention patent application after publication |