CN208477948U - Touch screen and display device - Google Patents
Touch screen and display device Download PDFInfo
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- CN208477948U CN208477948U CN201821026601.XU CN201821026601U CN208477948U CN 208477948 U CN208477948 U CN 208477948U CN 201821026601 U CN201821026601 U CN 201821026601U CN 208477948 U CN208477948 U CN 208477948U
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Abstract
The utility model relates to touch screen and display devices.The touch screen includes substrate and is stacked in the first transparency conducting layer and the second transparency conducting layer in substrate, first transparency conducting layer and the second transparency conducting layer belong to nano metal line conductive film, wherein, the mist degree of second transparency conducting layer is less than the mist degree of first transparency conducting layer.The introducing of second transparency conducting layer can reduce light in the reflection on nano metal line (such as nano-silver thread) surface, and the first transparency conducting layer can to electric conductivity caused by the introducing as the second transparency conducting layer change compensate, thus the electric conductivity of the touch screen of the utility model influenced by haze change it is lower.The utility model additionally provides the display device including above-mentioned touch screen.
Description
Technical field
The utility model relates to technical field of touch control more particularly to a kind of touch screens and a kind of including the touch screen
Display device.
Background technique
Conductive membrane with preferable light transmission is often applied in touch screen as induction electrode.In order to improve
The light transmission of bright conductive film usually requires that transparent conductive film light transmission in visible light region is greater than or equal to 80%.
The transparent conductive film being most widely used at present be using ITO as film made of the metal oxide of representative,
With excellent light transmittance and electric conductivity.But this kind of film usually utilizes sputtering technology to deposit, preparation temperature is high, and
And wherein making expensive containing scarcity metal, this kind of film is also easy to be broken when being bent, thus is not suitable for being applied to
Flexible Displays.
In recent years, the material for the substitution metal oxide being developed have conducting polymer, carbon nanotube, graphene,
Nano metal line etc., wherein nano-silver thread (SilverNano Wires, SNW) is due to the dimensional effect of Nano grade, using receiving
The transparent conductive film surfacing, resistant to bending of rice silver wire preparation, and there is preferable electric conductivity, it is considered to be preferred gold
Belong to the alternative materials of oxide.However, traditional nano-silver thread is difficult to meet the requirement of electric conductivity and mist degree simultaneously.
Utility model content
The utility model be directed to by reduction nano-silver thread content can reduce nano-silver thread conductive film mist degree but
It will lead to the problem of electric conductivity is deteriorated, propose a kind of touch screen and a kind of display device including the touch screen.
Touch screen provided by the utility model includes substrate and is stacked in the first electrically conducting transparent in the substrate
It is conductive that layer and the second transparency conducting layer, first transparency conducting layer and second transparency conducting layer belong to nano metal line
Film, wherein the mist degree of second transparency conducting layer is less than the mist degree of first transparency conducting layer.
Optionally, the portion of first transparency conducting layer is exposed in second transparency conducting layer with multiple openings
Divide surface.
Optionally, first transparency conducting layer have bulge-structure, the bulge-structure pass through it is described opening and with institute
The surface for stating the second transparency conducting layer flushes.
Optionally, the part of the surface that first transparency conducting layer is exposed accounts for first transparency conducting layer court
It is 10~60% to the area percentage on the surface of second transparency conducting layer.
Optionally, first transparency conducting layer with a thickness of 1 μm~50 μm, second transparency conducting layer with a thickness of
0.1 μm~20 μm.
Optionally, the mist degree of first transparency conducting layer is 10%~30%, the mist degree of second transparency conducting layer
It is 0.6%~20%.
Optionally, along being parallel to the plane of second transparency conducting layer, the section of the opening in polygon, circle or
Ellipse；Along the plane perpendicular to second transparency conducting layer, the section of the opening is in polygon, round or ellipse.
Optionally, the touch screen further includes the cabling far from the substrate side positioned at second transparency conducting layer
Layer, the routing layer are contacted with part bulge-structure.
Optionally, the touch screen further includes the protection far from the substrate side positioned at second transparency conducting layer
Cover board.
Display device provided by the utility model includes above-mentioned touch screen.
In touch screen provided by the utility model, the laminated construction of the first transparency conducting layer and the first transparency conducting layer and same
The sample thickness and more uniform transparent conductive film of mist degree is compared, the introducing of the second transparency conducting layer can reduce light in nanogold
Belong to the reflection on line (such as nano-silver thread) surface, the first transparency conducting layer can lead to the introducing due to the second transparency conducting layer
Electric conductivity variation compensate, thus the electric conductivity of the touch screen of the utility model influenced by haze change it is lower.
Further, have multiple openings to expose first transparency conducting layer in second transparency conducting layer
Part of the surface, first transparency conducting layer have bulge-structure, and the bulge-structure passes through the opening and with described second
The surface of transparency conducting layer flushes, so that the laminated construction of the first transparency conducting layer and the first transparency conducting layer can also be to described
Contact resistance of the touch screen in the second transparency conducting layer side is adjusted, and helps to reduce since haze change is to the lamination
The influence of the contact resistance of structure.
Display device provided by the utility model includes above-mentioned touch screen, thus is had same or like with the touch screen
The advantages of.
Detailed description of the invention
Fig. 1 is the sectional view of the touch screen of the utility model one embodiment.
Fig. 2 (a) is the sectional view of the touch screen of another embodiment of the utility model.
Fig. 2 (b) is the plan view of the touch screen of another embodiment of the utility model.
Description of symbols:
100- transparent conductive film；The first transparency conducting layer of 110-；The second transparency conducting layer of 120-；12- opening；111-
Bulge-structure.
Specific embodiment
As stated in the background art, industrial circle is being dedicated to developing the alternative materials of ITO always, and wherein nano-silver thread is as one
Kind brand-new material starts to substitute ITO as preferred conductive material.But inventors have found that for including nano metal line example
Such as the transparent conductive film of nano-silver thread, under the irradiation of light, since light can generate diffusing reflection on nano-silver thread surface, so that
Appearance of the transparent conductive film due to showing cloud or muddy shape, which can be indicated with mist degree, i.e., overflow by material
The ratio between the luminous flux of the luminous flux and permeable material penetrated.When this transparent conductive film is applied to touch-control display, above-mentioned mist
Degree problem will lead in the case where the irradiation of outdoor light, and reflection is strong, or even does not see screen.
For this purpose, inventor once attempts to reduce content of the nano-silver thread in transparent conductive film, to reduce mist degree, but grind
Study carefully discovery, the content for reducing nano-silver thread can frequently result in the electric conductivity variation of transparent conductive film, be not suitable for directly in touch-control
It is applied in screen.
Based on the studies above, the utility model provides a kind of touch screen, which includes transparent conducting structures as electricity
Pole can reduce mist degree (i.e. raising light transmission) under conditions of will not significantly affect the electric conductivity of the electrode.
For the purpose of this utility model, technical solution and advantage is more clearly understood, develop simultaneously implementation referring to the drawings
The utility model is further described in example.It should be noted that the size disclosed in the accompanying drawings, ratio, angle and quantity are only
It is only example, the utility model is not limited to details shown in the drawings, and attached drawing is using very simplified form and using non-accurate
Ratio, only to it is convenient, lucidly aid in illustrating the purpose of the utility model embodiment.
It should also be noted that, term " first " " second " etc. is used between similar element distinguish, and it is not necessarily
For describing certain order or time sequencing, it is understood that in the appropriate case, these terms so used are replaceable.In order to
Convenient for description, spatially relative term can be used herein, as " ... on ", " ... top ", " ... upper table
Face ", " above " etc., for describing the space bit of a device or feature and other devices or feature as depicted in the figures
Set relationship.It should be understood that spatially relative term is intended to comprising making other than orientation of the device described in figure
With or operation in different direction.For example, if the device in attached drawing is squeezed or with the positioning of other different modes (as revolved
Turn), exemplary term " ... top " also may include " ... lower section " and other position relations.
Fig. 1 is the sectional view of the touch screen of the utility model one embodiment.Referring to Fig.1, touch screen 100 includes substrate
101 and the first transparency conducting layer 110 and the second transparency conducting layer 120 that are stacked in substrate 101, the first electrically conducting transparent
Layer 110 and the second transparency conducting layer 120 belong to nano metal line conductive film, wherein the mist degree of the second transparency conducting layer 120
Less than the mist degree of the first transparency conducting layer 110.
Substrate 101 can be rigid or flexible, substrate 101 preferably transparent substrates, for example, soda-lime glass, borosilicate
The substrate of glass such as the alkali glass such as glass, alkali-free glass, chemically reinforced glass can also be that material is selected from acryl (PMMA), gathers
Vinyl chloride (PVC), polypropylene (PP), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), poly- carbon
Acid esters (PC), polystyrene (PS) wherein any flexible substrates.
The laminated construction of first transparency conducting layer 110 and the second transparency conducting layer 120 can be used as 100 Touch Zone of touch screen
Induction electrode, due to the good flexible of nano-silver thread and film formation at low temp characteristic, it is preferred that substrate 101 is flexible base
Bottom.For example, in touch screen 100 in conjunction with flexible display screen to form touch control display apparatus when, can use flexible display screen
Thin-film encapsulation layer as flexible substrates, but not limited to this, the touch screen of the utility model can also be rigid or flexible with other
Electronic device combines, to facilitate touch-control.
The nano metal line conductive film refers to utilizing the nano wire production of gold, silver, platinum, copper, cobalt, carbon, palladium etc.
Conductive film, in the present embodiment by taking nano-silver thread conductive film as an example, the production of nano-silver thread conductive film is referred to ability
Method disclosed in domain carries out, and illustratively, the production of nano-silver thread conductive film may include following process: first by nano-silver thread
It is dispersed in a solvent (such as methanol, ethyl alcohol, isopropanol or ethers organic matter etc.), is then made by the methods of coating
It is formed by solution to be covered in a substrate, after heating, drying, leaves the film including nano-silver thread on this substrate
That is nano-silver thread conductive film.The method that the mist degree of nano-silver thread conductive film can test mist degree according to disclosed in this field obtains
, such as haze meter can be selected and directly measure.
By the adjustment of the ingredient to nano-silver thread solution, the nano-silver thread conductive thin with different mist degrees can be obtained
Film.In the utility model embodiment, the mist degree of the mist degree of the second transparency conducting layer 120 less than the first transparency conducting layer 110.
It under some embodiments, can be by making weight percent of the nano-silver thread in the second transparency conducting layer 120
Less than the weight percent in the first transparency conducting layer 110 method so that the mist degree of the second transparency conducting layer 120 is less than
The mist degree of first transparency conducting layer 110.
Under other embodiments, can also by the way that light diffusing particles are added in the second transparency conducting layer 120 so that
The second transparency conducting layer 120 mist degree less than the first transparency conducting layer 110 mist degree, such as Au nanometers of the light diffusing particles
Particle, Cu nanoparticle, ZnO nanoparticle, TiO2Nanoparticle, SiO2Nanoparticle, ITO nanoparticle, AZO (mix Al's
ZnO) the above mixing of one of nanoparticle, TCO nanoparticle, single layer or multi-layer graphene, carbon nanotube or both
Object.Solution for making the second transparency conducting layer 120 illustratively includes following component: nano-silver thread (0.5%-3%) has
Solvent (75%-95.5%), adhesive (5%-10%), light diffusing particles and other substances (0%-17%), for making
The solution of second transparency conducting layer 120 illustratively includes following component: nano-silver thread (0.5%-5%), organic solvent
(80%-94.5%), adhesive (5%-15%), above-mentioned each component in mixed solution preferred weight percent mark in including
In number.
It, can also be transparent using the higher nano-silver thread production second of flakes iso-scallop under other embodiment
Conductive layer 120, and the nano-silver thread of linear (such as the ratio between wire length and line footpath are greater than 10) is utilized to make the first transparency conducting layer
110, the mist so that the second transparency conducting layer 120 is scattered since the higher nano-silver thread of roughness can increase light
Spend the mist degree less than the first transparency conducting layer 110.Mist degree different the second transparency conducting layer 120 and the first transparency conducting layer 110
It can also be obtained by method disclosed in this field.
Illustratively, about 1 μm to 50 μm of the thickness of the first transparency conducting layer 110, the thickness of the second transparency conducting layer 120 is about
0.1 μm to 20 μm.The mist degree of first transparency conducting layer is 10%~30%, and the mist degree of second transparency conducting layer is
0.6%~20%.
The laminated construction of above-mentioned first transparency conducting layer 110 and the second transparency conducting layer 120 and same thickness and mist degree compared with
Uniform transparent conductive film is compared, and the introducing of the second transparency conducting layer 120 can reduce light in the anti-of nano-silver thread surface
It penetrates, and the mist degree of the first transparency conducting layer 110 is relatively large, it can be by keeping or optimizing the first transparency conducting layer 110
Conductive capability is to compensate the variation of electric conductivity caused by the introducing as the second transparency conducting layer 120, so that touch-control
The electric conductivity of screen 100 is influenced lower by haze change.
Fig. 2 (a) is the sectional view of the touch screen of another embodiment of the utility model.Fig. 2 (b) is another reality of the utility model
Apply the plan view of the touch screen of example.Fig. 2 (a) is also considered as the sectional view in the direction AB in Fig. 2 (b).Referring to Fig. 2 (a) and Fig. 2
(b), practical new at this in order to reduce the influence of the introducing of the second transparency conducting layer 120 to the electrode conductivuty of touch screen 100
In some embodiments of type, 12 are open to expose the first transparency conducting layer 110 with multiple in the second transparency conducting layer 120
Part of the surface.Preferably, the first transparency conducting layer 110 has protrusion knot on the surface towards the second transparency conducting layer 120
Structure 111, bulge-structure 111 pass through opening 12 and flush with the surface of the second transparency conducting layer 120.
The quantity and size of opening 12 can be according to 120 conductivity of the first transparency conducting layer 110 and the second transparency conducting layer
Difference be adjusted, such as under some embodiments, the conductivity of the second transparency conducting layer 120 is transparent less than first to be led
The conductivity of electric layer 110, thus when the side of separate first transparency conducting layer 110 by the second transparency conducting layer 120 and its
When his conductive material (such as metal routing of touch screen 100) contact, in order to reduce contact resistance, by multiple 12 exposures of opening
The part of the surface of the first transparency conducting layer 110 account for the first transparency conducting layer 110 towards the second transparency conducting layer 120
The area percentage on surface about 10~60%.
Along the plane of the second transparency conducting layer 120 is parallel to, 12 section of being open is not limited to square shown in Fig. 2 (a)
Shape, under the other embodiment of the utility model, be open 12 cross section can in except rectangle other polygons,
Round or ellipse etc..Equally, along the surface perpendicular to the second transparency conducting layer 120,12 section of being open is not limited to Fig. 2
(b) rectangle shown in, under the other embodiment of the utility model, 12 section of being open can be in its except rectangle
His polygon, round or ellipse etc..
In the laminated construction of above-mentioned first transparency conducting layer 110 and the second transparency conducting layer 120, due to the second electrically conducting transparent
The mist degree of layer 120, can be saturating by adjusting the second transparency conducting layer 120 and first less than the mist degree of the first transparency conducting layer 110
The thickness and haze differential of bright conductive layer 110 optimize the light transmission of the laminated construction, and reduce lead to it as far as possible
Electrical influence, compared with same thickness and the uniform transparent conductive film of mist degree, the laminated construction both facilitates optimization touching
The light transmission in area is controlled, while can also reduce or avoid the influence to induction electrode electric conductivity.
In the utility model embodiment, touch screen 100 can also include the separate institute positioned at the second transparency conducting layer 120
The routing layer of substrate side is stated, the effect of the routing layer is to draw the electrical contact of above-mentioned laminated construction, to obtain touch-control
The position of touch in area realizes touch-control.The electrode of the routing layer may include the metals such as elargol, aluminium, nickel (Ni), copper, or including
The alloy of the elements such as silver, palladium (Pd), aluminium, copper, nickel.In order to reduce the second transparency conducting layer of the routing layer Yu touch screen 100
Contact resistance between 120 1 side surfaces, it is preferred that the routing layer is contacted with part bulge-structure 111, to avoid second
Influence of the introducing of transparency conducting layer 120 to contact resistance.
In the utility model embodiment, touch screen 100 can also include the separate institute positioned at the second transparency conducting layer 120
The cover sheet of substrate side is stated, the effect of the cover sheet is protection touch screen 100.The protective layer may include transparent tree
Rouge or transparent optical cement, for example, may include polymethyl methacrylate (PMMA), polyvinyl alcohol (PVA), polycarbonate (PC),
The high molecular polymers such as polyethylene terephthalate (PET), but not limited to this, the protective layer also may include other
Field is disclosed for the material coated on nano-silver thread surface.
The utility model embodiment further includes a kind of display device, and the display device includes above-mentioned touch screen 100.It is described
Display device may also include the display screen being bonded with touch screen 100, and the display screen is, for example, LCD screen, LED screen or OLED
Screen.The display screen is also possible to rigidity or flexible screen.The display device can be display panel, Electronic Paper, mobile phone, put down
Any product having a display function such as plate computer, television set, display, laptop, Digital Frame, navigator or portion
Part.Display device in the present embodiment has the advantages that same or like with the touch screen in the present embodiment.
It is understood that above embodiments are only limited to describe the technical solution of the utility model, for appointing
For what those skilled in the art, in the case where not departing from technical solutions of the utility model ambit, all using above-mentioned
The technology contents of announcement make possible changes and modifications to technical solutions of the utility model, or are revised as the equivalent of equivalent variations
Embodiment.Therefore, all contents without departing from technical solutions of the utility model, but according to the technical essence of the utility model pair
Any simple modifications, equivalents, and modifications made for any of the above embodiments belong to the model of technical solutions of the utility model protection
It encloses.
Claims (10)
1. a kind of touch screen, which is characterized in that including substrate and be stacked in the first transparency conducting layer in the substrate
With the second transparency conducting layer, first transparency conducting layer and second transparency conducting layer belong to nano metal line conductive thin
Film, wherein the mist degree of second transparency conducting layer is less than the mist degree of first transparency conducting layer.
2. touch screen as described in claim 1, which is characterized in that have multiple openings with sudden and violent in second transparency conducting layer
Expose the part of the surface of first transparency conducting layer.
3. touch screen as claimed in claim 2, which is characterized in that first transparency conducting layer has bulge-structure, described
Bulge-structure passes through the opening and flushes with the surface of second transparency conducting layer.
4. touch screen as claimed in claim 2, which is characterized in that the part that first transparency conducting layer is exposed
The area percentage that surface accounts for first transparency conducting layer towards the surface of second transparency conducting layer is 10~60%.
5. touch screen as described in claim 1, which is characterized in that first transparency conducting layer with a thickness of 1 μm~50 μm,
Second transparency conducting layer with a thickness of 0.1 μm~20 μm.
6. touch screen as described in claim 1, which is characterized in that the mist degree of first transparency conducting layer be 10%~
30%, the mist degree of second transparency conducting layer is 0.6%~20%.
7. touch screen as claimed in claim 2, which is characterized in that along the plane for being parallel to second transparency conducting layer, institute
The section of opening is stated in polygon, round or ellipse；Along perpendicular to second transparency conducting layer plane, the opening
Section is in polygon, round or ellipse.
8. touch screen as described in any one of claim 1 to 7, which is characterized in that the touch screen further includes being located at described the
The routing layer far from the substrate side of two transparency conducting layers, the routing layer are contacted with part bulge-structure.
9. touch screen as described in any one of claim 1 to 7, which is characterized in that the touch screen further includes being located at described the
The cover sheet far from the substrate side of two transparency conducting layers.
10. a kind of display device, which is characterized in that including touch screen as described in any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821026601.XU CN208477948U (en) | 2018-06-30 | 2018-06-30 | Touch screen and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821026601.XU CN208477948U (en) | 2018-06-30 | 2018-06-30 | Touch screen and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208477948U true CN208477948U (en) | 2019-02-05 |
Family
ID=65212251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821026601.XU Active CN208477948U (en) | 2018-06-30 | 2018-06-30 | Touch screen and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208477948U (en) |
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2018
- 2018-06-30 CN CN201821026601.XU patent/CN208477948U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Yungu (Gu'an) Technology Co., Ltd.|Bazhou Yungu Electronic Technology Co., Ltd.|Kunshan Institute of technology new flat panel display technology center Co., Ltd Assignor: Kunshan Guo Xian Photoelectric Co., Ltd. Contract record no.: X2019990000156 Denomination of utility model: Capacitance type embedded touch screen and display device Granted publication date: 20190205 License type: Common License Record date: 20191030 |