CN212990705U - Transparent conductive film and touch screen - Google Patents
Transparent conductive film and touch screen Download PDFInfo
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- CN212990705U CN212990705U CN202021503493.8U CN202021503493U CN212990705U CN 212990705 U CN212990705 U CN 212990705U CN 202021503493 U CN202021503493 U CN 202021503493U CN 212990705 U CN212990705 U CN 212990705U
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Abstract
The utility model discloses a transparent conductive film, include: the ultraviolet light filter comprises a transparent base material, wherein a first ultraviolet light filter layer is laminated on the surface of one side of the transparent base material; and/or a second ultraviolet light filtering layer is arranged on the surface of the other side of the transparent base material in a laminating way; the ultraviolet light filter layer and the second ultraviolet light filter layer are made of the same material. The utility model also discloses a touch-sensitive screen. The transparent conductive film and the touch screen using the transparent conductive film can effectively filter ultraviolet rays with the wavelength less than 400nm emitted by a laser, and further protect a conductive material on one surface to be processed from being damaged.
Description
Technical Field
The utility model relates to a touch-sensitive screen technical field especially relates to a transparent conductive film and touch-sensitive screen.
Background
In the field of touch screens, touch electrode patterns are usually processed and manufactured on the surface of a transparent conductive material, and the main processes of the main processes are two types: yellow light technology and laser technology. The yellow light process needs to process the transparent conductive material to form the touch electrode through the procedures of exposure, development, etching and the like, and has the disadvantages of multiple procedures, complex process, large equipment investment and high manufacturing cost. The laser process can realize the manufacture of the touch electrode only by adopting a laser to process the surface of the transparent conductive film, and has the advantages of simple process, lower manufacture cost and huge market potential.
At present, the mainstream external touch screen in the market mostly adopts a double-layer structure (namely, a combination of two layers of transparent conductive films). However, as the smart terminal product gradually develops in a light and thin direction, in order to reduce the total thickness of the product, touch electrode patterns are usually fabricated on both sides of a transparent substrate, when a laser process is adopted, because high-energy ultraviolet light (with a wavelength less than 400nm) emitted by a laser penetrates through a material, the other side to be processed is also damaged to a certain extent, so that the yield of the laser process is reduced, and the fabrication cost is increased.
Therefore, it is necessary to provide a transparent conductive film with ultraviolet filter layers on both sides, which is suitable for laser process.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a transparent conductive film sets up the ultraviolet ray filter layer through arbitrary one side or two sides at transparent substrate, and its aim at solves when transparent conductive material surface machining preparation touch-control electrode pattern, and the ultraviolet light of the high energy that the laser instrument sent (wavelength < 400nm) can pierce through transparent conductive material's problem.
The technical scheme of the utility model as follows:
a transparent conductive film comprising: the ultraviolet light filter comprises a transparent base material, wherein a first ultraviolet light filter layer is laminated on the surface of one side of the transparent base material; and/or a second ultraviolet light filtering layer is arranged on the surface of the other side of the transparent base material in a laminating way; the specification and the material of the ultraviolet light filter layer and the second ultraviolet light filter layer are the same.
Further, a first optical processing layer is further arranged between the transparent substrate and the first ultraviolet light filtering layer in a laminated mode; and/or a second optical processing layer is further arranged between the transparent substrate and the second ultraviolet light filtering layer in a laminated manner; the first optical processing layer and the second optical processing layer are the same in specification and material.
Further, a first intermediate coating and a first conductive material layer are sequentially stacked on the outer surface of the first ultraviolet light filtering layer; a second intermediate coating and a second conductive material layer are sequentially laminated on the outer surface of the second ultraviolet light filtering layer; the first intermediate coating and the second intermediate coating have the same specification and material; the first conductive material layer and the second conductive material layer are the same in specification and material.
Further, the transparent substrate is at least one of a transparent PET substrate, a CPI substrate, or a glass substrate.
Further, the first ultraviolet light filter layer is a transparent layer formed by ultra-fine iron oxide ultraviolet light absorbing substances.
Further, the thickness of the first ultraviolet light filter layer is 1nm-3 μm.
Further, the first conductive material layer is at least one of ITO, metal grids, nano silver wires and graphene.
Further, the outer surfaces of the first conductive material layer and the second conductive material layer are covered with thin films.
The transparent conductive film has the effective effects that: because the ultraviolet light filter layer which can effectively filter ultraviolet light with the wavelength less than 400nm emitted by the laser is arranged on the upper surface and/or the lower surface of the substrate, the conductive material on the surface to be processed of the transparent conductive material of the touch screen is protected from being damaged, so that the transparent material with the conductive materials on the two surfaces is suitable for a laser etching process, the production yield is improved, and the production cost is reduced.
The utility model also discloses a touch-sensitive screen, including the stromatolite design in proper order: the cover plate is attached to the touch functional layer through the first optical adhesive layer, the touch functional layer is attached to the display surface of the display module through the second optical adhesive layer, the first optical adhesive layer is made of the same material as the second optical adhesive layer, and the touch functional layer is made of the front transparent conductive film.
Further, the first optical adhesive layer is one of OCA optical adhesive, OCR optical adhesive and pressure-sensitive adhesive.
The touch screen has the following effective effects: because the touch control functional layer of the touch screen adopts the transparent conductive film, the touch screen can effectively filter ultraviolet rays with the wavelength less than 400nm emitted by a laser.
Drawings
Fig. 1 is a schematic view of a laminated structure of embodiment 1 of the present invention;
fig. 2-3 are schematic diagrams of the stacked structure of embodiment 2 of the present invention;
fig. 4-6 are schematic diagrams of the stacked structure of embodiment 3 of the present invention;
fig. 7 is a schematic structural diagram of the touch screen.
In the figure: 1. the display module comprises a transparent substrate, 2, a first ultraviolet filtering layer, 3, a first intermediate coating, 4, a first conductive material layer, 5, a first optical processing layer, 21, a second ultraviolet filtering layer, 31, a second intermediate coating, 4, a second conductive material layer, 51, a second optical processing layer, 6, a cover plate, 7, a touch functional layer and 8.
Wherein, the first ultraviolet light filter layer and the second ultraviolet light filter layer are completely the same; the first intermediate coating and the second intermediate coating are identical; the first optical treatment layer and the second optical treatment layer are identical; the first conductive material layer and the second conductive material layer are identical.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
For a better understanding of the present invention, reference will now be made to the accompanying drawings and specific examples, which are set forth in detail below.
Example 1:
as shown in fig. 1, a transparent conductive film and a touch panel are sequentially stacked from the upper surface of a transparent substrate 1: the ultraviolet light filter layer comprises a first ultraviolet light filter layer 2, a first intermediate coating 3 and a first conductive material layer 4; stacked from the transparent base material 1 downward in this order are: a second ultraviolet light filter layer 21, a second intermediate coat 31 and a second layer of conductive material 41. The transparent substrate 1 plays a supporting role, and is at least one of a transparent PET (Polyethylene terephthalate, commonly called as dacron resin, which is the most important variety of thermoplastic polyester) substrate, a CPI (color Polyimide, plastic Colorless Polyimide with flexible characteristics) substrate, or a glass substrate, and in the present invention, the CPI substrate is preferably selected as the CPI substrate.
The first ultraviolet light filter layer 2 can effectively filter ultraviolet light with the wavelength less than 400nm emitted by the laser, and the ultraviolet light is prevented from damaging the first conductive material layer 4. First ultraviolet light filter layer 2 can be the stratum lucidum that superfine grain iron oxide ultraviolet light absorbing substance formed, also can be other materials that have the same characteristic, ultraviolet light filter layer 2 can not influence the transmissivity of material, first ultraviolet light filter layer 2 can be through coating, coating by vaporization, printing or other mode preparation at transparent substrate 1's upper surface, the thickness of first ultraviolet light filter layer 2 is 1nm-3 mu m, the utility model discloses preferred 20 nm. Likewise, the second ultraviolet light filter layer 21 and the first ultraviolet light filter layer 2 are identical in all respects. In fact, the terms "first" and "second" merely indicate the sequential relationship of the appearance, but the reference may be two identical items of the same specification or may be the same items of different specifications. For example, in the present invention, the first uv filter layer 2 and the second uv filter layer 21 are identical; the first intermediate coat 3 and the second intermediate coat 31 are identical; the first conductive material layer 4 and the second conductive material layer 41 are identical.
The first intermediate coating 3 may be silica or another material that promotes adhesion between the first electrically conductive material 4 and the first ultraviolet light filter layer 2.
The first conductive material layer 4 plays a conductive role, and may be ITO (Indium Tin Oxides, an N-type oxide semiconductor-Indium Tin oxide), a metal grid, a silver nanowire, graphene, or other conductive materials.
The second ultraviolet light filter layer 21, the second intermediate coating 31 and the second conductive material layer 41 are of a laminated structure which is arranged on the lower surface of the transparent substrate 1 and has the same function with the upper surface, namely, the second ultraviolet light filter layer 21, the second intermediate coating 31 and the second conductive material layer 41 are sequentially laminated on the lower surface of the transparent substrate 1.
Example 2:
as shown in fig. 2 and fig. 3, the utility model discloses can set up the ultraviolet ray filter layer in the one side of transparent substrate 1, set up first ultraviolet ray filter layer 21 or set up two layers at the reverse side at the front of transparent substrate 1 and strain ultraviolet ray layer 21 promptly, also can reach the ultraviolet ray of filtering laser instrument, and then protect conducting material not damaged. The structure of embodiment 2 is the simplest, but the function of embodiment 1 can be also achieved because at least an ultraviolet light filter layer is provided on the front or back surface of the transparent substrate 1.
Example 3:
as shown in fig. 4 to 6, the present invention may also include a first optical processing layer 5 (see fig. 4) disposed between the transparent substrate 1 and the first ultraviolet light filtering layer 2, wherein the first optical processing layer 5 may be a coating having a specific refractive index, and can change the light incident on the transparent substrate to exit in a specific direction. A second optical treatment layer 51 (see fig. 5) may also be provided between the transparent substrate 1 and the second ultraviolet light filter layer 21. The optically treated layers may also be provided on both sides of the transparent substrate 1, i.e., the optically treated layer 5 and the second optically treated layer 51 (see fig. 6).
The transparent material that all has conducting material on above two-sided, its whole luminousness is greater than or equal to 70%, haze is less than or equal to 5%, thickness 1-500 mu m, the utility model discloses a 25 mu m, transparent conductive film still can cover the protection film on its two-sided conducting material layer (be first conducting material layer and second conducting material layer) surface when shipment, prevents that the membrane material from by fish tail or pollution etc..
Compare with traditional two-sided transparent film that all has conducting material, the utility model discloses a transparent conductive film sets up ultraviolet ray filter layer 2 through arbitrary one side or the two sides at transparent substrate 1, and the wavelength that can effectual filtering laser instrument sent is at the ultraviolet light within 400nm, and then the conducting material of the one side of protection treating processing does not receive the damage, makes this kind of two-sided transparent material that all has conducting material be applicable to laser etching technology, improves the production yield, reduction in production cost.
The utility model also discloses an use touch-sensitive screen of this kind of transparent conductive film preparation, concrete structure is as shown in FIG. 7, from the top down includes in proper order: the cover plate 6, the touch functional layer 7 and the display module 8 are attached together through the first optical adhesive layer 61 on one side of the cover plate 6 and the touch functional layer 7, and the other side of the touch functional layer 7 and the display surface of the display module 8 are attached together through the second optical adhesive layer 71. The touch functional layer 7 is any one of the transparent conductive films described above. The first optical adhesive layer 61 and the second optical adhesive layer 71 are identical. The first optical adhesive layer 61 may be an OCA optical adhesive, an OCR optical adhesive, a pressure sensitive adhesive or other glues with the same characteristics.
The cover plate 6 may be glass, CPI or PET. Touch-control functional layer 7, for by the utility model discloses a two-sided transparent conducting material passes through the touch-control electrode layer of the radium-shine technology processing preparation of laser, display module 8 can be LCD display module assembly, the flexible display module assembly of LED or other display module assemblies, does not restrict.
Because the touch control functional layer of the touch screen adopts the transparent conductive film, the touch screen can effectively filter ultraviolet rays with the wavelength less than 400nm emitted by a laser.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A transparent conductive film, comprising: the ultraviolet light filter comprises a transparent base material, wherein a first ultraviolet light filter layer is laminated on the surface of one side of the transparent base material; and/or a second ultraviolet light filtering layer is arranged on the surface of the other side of the transparent base material in a laminating way; a first intermediate coating and a first conductive material layer are sequentially laminated on the outer surface of the first ultraviolet light filtering layer; a second intermediate coating and a second conductive material layer are sequentially laminated on the outer surface of the second ultraviolet light filtering layer; the specification and the material of the ultraviolet light filter layer and the second ultraviolet light filter layer are the same.
2. The transparent conductive film according to claim 1, wherein a first optical treatment layer is further laminated between the transparent substrate and the first ultraviolet light filter layer; and/or a second optical processing layer is further arranged between the transparent substrate and the second ultraviolet light filtering layer in a laminated manner; the first optical processing layer and the second optical processing layer are the same in specification and material.
3. The transparent conductive film according to claim 1, wherein the first intermediate coat layer and the second intermediate coat layer have the same size and material; the first conductive material layer and the second conductive material layer are the same in specification and material.
4. The transparent conductive film according to any one of claims 1 to 3, wherein: the transparent substrate is one of a transparent PET substrate, a CPI substrate or a glass substrate.
5. The transparent conductive film according to any one of claims 1 to 3, wherein: the first ultraviolet light filtering layer is a transparent layer formed by ultra-fine iron oxide ultraviolet light absorbing substances.
6. The transparent conductive film according to any one of claims 1 to 3, wherein: the thickness of the first ultraviolet light filter layer is 1nm-3 mu m.
7. The transparent conductive film according to claim 3, wherein the first conductive material layer is one of ITO, metal mesh, silver nanowire, and graphene.
8. The transparent conductive film according to claim 3, wherein a protective film is covered on the outer surfaces of the first conductive material layer and the second conductive material layer.
9. A touch screen comprising a sequential stack design: the touch panel comprises a cover plate, a touch functional layer and a display module, wherein the cover plate and the touch functional layer are attached together through a first optical adhesive layer, the touch functional layer and the display surface of the display module are attached together through a second optical adhesive layer, the first optical adhesive layer and the second optical adhesive layer are made of the same material, and the touch functional layer is the transparent conductive film according to any one of claims 1 to 8.
10. The touch screen of claim 9, wherein the first optical adhesive layer is one of an OCA optical adhesive, an OCR optical adhesive, and a pressure sensitive adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021503493.8U CN212990705U (en) | 2020-07-27 | 2020-07-27 | Transparent conductive film and touch screen |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021503493.8U CN212990705U (en) | 2020-07-27 | 2020-07-27 | Transparent conductive film and touch screen |
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| CN212990705U true CN212990705U (en) | 2021-04-16 |
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| CN202021503493.8U Active CN212990705U (en) | 2020-07-27 | 2020-07-27 | Transparent conductive film and touch screen |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115340757A (en) * | 2022-08-30 | 2022-11-15 | 乐凯华光印刷科技有限公司 | High-transmittance ultraviolet light blocking base film, double-sided nano silver wire conductive film comprising base film and preparation method of double-sided nano silver wire conductive film |
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2020
- 2020-07-27 CN CN202021503493.8U patent/CN212990705U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115340757A (en) * | 2022-08-30 | 2022-11-15 | 乐凯华光印刷科技有限公司 | High-transmittance ultraviolet light blocking base film, double-sided nano silver wire conductive film comprising base film and preparation method of double-sided nano silver wire conductive film |
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