CN202677865U - Patterned transparent conductive thin film based on random grids - Google Patents
Patterned transparent conductive thin film based on random grids Download PDFInfo
- Publication number
- CN202677865U CN202677865U CN 201220206023 CN201220206023U CN202677865U CN 202677865 U CN202677865 U CN 202677865U CN 201220206023 CN201220206023 CN 201220206023 CN 201220206023 U CN201220206023 U CN 201220206023U CN 202677865 U CN202677865 U CN 202677865U
- Authority
- CN
- China
- Prior art keywords
- grid
- random
- insulating regions
- transparent conductive
- conductive region
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model discloses a patterned transparent conductive thin film based on random grids. The surface of the conductive thin film is divided into a conductive area and an insulate area, wherein the conductive area has the metal grids, the grids of the conductive area are formed by grid lines of the conductive area, and the grids of the conductive area are random-shaped random grids. The patterned transparent conductive thin film is formed by random-shaped random grids, thus moire fringe is not generated. Moreover, the thin film is observed by naked eyes, and the transparency degrees of the conductive area and the insulate area are absolutely identical or closed, thus gray contrast is not generated.
Description
Technical field
The utility model relates to a kind of conductive film, and more specifically, the utility model relates to a kind of graphical transparent conductive film based on random grid.
Background technology
Nesa coating is to have satisfactory electrical conductivity, and has a kind of film of high transmission rate at visible light wave range.Nesa coating has been widely used in the fields such as flat panel display, photovoltaic device, contact panel and electromagnetic shielding at present, has the extremely wide market space.
ITO is dominating the market of nesa coating always.But in such as most of practical applications such as touch-screens, often need the multiple working procedures such as exposure, video picture, etching and cleaning that nesa coating is carried out graphically, namely form fixing conductive region and insulating regions according to graphic designs at substrate surface.Compare, use print process directly to form metal grill in the appointed area of base material, can save patterned technical process, have the plurality of advantages such as low pollution, low cost.Its grid line is the good metal of conductivity, and is light tight, and line width is below the resolution of human eye; Zone without lines is transmission region.By the width that changes lines and sheet resistivity and the light transmittance that mesh shape can be controlled nesa coating within the specific limits.
Dai Nippon Printing of Japanese firm, Fujiphoto and prefecture scholar, and German company PolyIC uses respectively printing process to obtain the graphical transparent conductive film of excellent performance.Wherein the graphics resolution that obtains of PolyIC is 15um, sheet resistivity 0.4 – 1 Ω/sq, and light transmittance is greater than 80%.
Above-mentioned metal grill film generally all is according to graphic designs, lays the metal grill of regular shape at conductive region; And it is blank at insulating regions.
In the prior art of graphical electrically conducting transparent film preparation, with respect to traditional ito thin film, use print process or silver salt method directly to form metal grill in the appointed area of flexible parent metal, can save patterned technical process, have the plurality of advantages such as low pollution, low cost.But existing metal grill is the grid of regular shape mostly, can produce obvious Moire fringe during application.The conductive region of this outer film has metal grill, and insulating regions does not have metal grill, and this transmitance difference can cause the user can indistinctly see the figure of conductive region, affects the overall appearance effect.
So the defective of prior art is at present:
The Moire fringe phenomenon: the conductive region of film is the grid of regular shape, comparatively significantly Moire fringe can occur when this transparent conductive film is attached at the LCD surface, affects visual effect.This phenomenon is because the pixel cell of LCD is the rectangular element of regular shape, is regular shape and the black lines that becomes periodic distribution between the pixel.And the light tight lines of the periodicity of conductive film will periodically cover with the black line formation of LCD, and then macro manifestations is the Moire fringe phenomenon.In addition identical principle is when the applying of two regular grid conducting films also can produce obvious Moire fringe.This phenomenon has seriously restricted the application based on the graphical nesa coating of metal grill undoubtedly.
Transmitance difference: the conductive region of film has metal grill, and its transmitance can be according to the shading specific damping of grid line; But insulating regions does not have metal grill, and transmitance that therefore should the zone is necessarily greater than conductive region.When being applied to show the field, this transmitance difference can cause the user can indistinctly see the figure of conductive region, affects the overall appearance effect.
The utility model content
For overcoming the deficiencies in the prior art, the purpose of this utility model is intended to propose a kind of graphical transparent conductive film based on random grid.
Another purpose of the present utility model is to provide a kind of use grid in irregular shape, and lines overlap to avoid forming periodically with regular grid, thereby thoroughly avoid the generation of Moire fringe.The Stochastic Networks ruling that does not have electrical connection is laid in this external film-insulated zone, eliminates transmitance difference.
The technical solution of the utility model is as follows:
A kind of graphical transparent conductive film based on random grid, described conductive film surface is divided into conductive region and insulating regions, described conductive region has the grid that is made of metal, the grid of described conductive region is comprised of the grid line of conductive region, and the grid of described conductive region is random grid in irregular shape.
On the other hand of the present utility model, described insulating regions has the grid that is made of metal, and the grid of described insulating regions is comprised of the grid line of insulating regions; The grid of described insulating regions is random grid in irregular shape; The difference of the transmitance of described conductive region and insulating regions is less than 2%.
On the other hand of the present utility model, the grid line of described conductive region is evenly distributed in all angles direction.
On the other hand of the present utility model, the grid line of described insulating regions is evenly distributed in all angles direction.
On the other hand of the present utility model, the grid line of described random grid is groove structure.
On the other hand of the present utility model, the random grid of described conductive region is the grid that irregular polygon consists of.
On the other hand of the present utility model, the random grid of described insulating regions is the grid of irregular polygon formation or the irregular polygon grid that node disconnects.
On the other hand of the present utility model, the described random grid of described conductive region and described insulating regions meets the following conditions: the grid line in the described random grid is straightway, and θ is evenly distributed with dextrad horizontal direction X-axis angulation, described each the bar random grid of statistics that evenly is distributed as
θValue; Then according to 5
oStep pitch, statistics drops on the probability of grid line in each angular interval
p i, thus 0 ~ 180
oObtain with 36 interior angular interval
p 1,
p 2Extremely
p 36 p iSatisfy standard deviation less than 20% of arithmetic equal value.
On the other hand of the present utility model, insulate between the grid line of described insulating regions and the grid line of conductive region.
On the other hand of the present utility model, the mode of the grid line of described insulating regions and the insulation of the grid line of conductive region is: be interconnected between the grid line of described insulating regions, isolate out between the grid line of described insulating regions and the grid line of described conductive region; Perhaps the grid of described insulating regions is comprised of the grid line that does not have node and disconnect each other.
On the other hand of the present utility model, the minimum range of the per two grid line head and the tail end points that mutually disconnect in the grid of described insulating regions is less than 30 microns.
The utility model adopts a kind of novel printing technology, can prepare graphics resolution less than 3um, and sheet resistivity is less than 10 Ω/sq, and light transmittance is greater than 87% graphical nesa coating.
The utility model beneficial effect is:
It is to be made of random grid in irregular shape that the utility model provides graphical nesa coating.The Stochastic Networks ruling is evenly distributed in all angles direction, avoided the periodicity pixel cell generation of lighttight metal grid lines and LCD periodically to cover, and then avoided the generation of Moire fringe in principle, broken through and perplexed the technical bottleneck that metallic mesh class nesa coating is applied to the LCD surface all the time.
The utility model provides graphical nesa coating in the same laying of insulating regions random grid in irregular shape.Conductive region all has similar random grid with insulating regions, and therefore the difference of optical transmittance will can not produce macroscopic gray difference less than 2%.
Description of drawings
Fig. 1 is the cross sectional representation of flexible transparent conductive film of the present utility model;
Fig. 2 is the floor map of flexible transparent conductive film of the present utility model;
Fig. 3 is the random grid schematic diagram of flexible transparent conductive film of the present utility model;
Fig. 4 be in the flexible random grid of the present utility model every line segment with the X-axis angle
θ
Fig. 5 is the probability of every line segment and X-axis angle in the flexible random grid of the present utility model
pDistribute;
Fig. 6 is the cross sectional representation of flush type flexible transparent conductive film of the present utility model;
Fig. 7 is the floor map of flush type flexible transparent conductive film of the present utility model;
Fig. 8 is the cross sectional representation of flush type transparent conductive film of the present utility model;
Fig. 9 is the floor map of flush type transparent conductive film of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the technical program is done further and to be stated clearly in detail.
Embodiment 1:
In the present embodiment, the cross sectional representation of patterned flexible transparent conductive film and floor map are distinguished as illustrated in fig. 1 and 2, and film is PET 11 from bottom to top successively, adhesion promoting layer 12 surfaces, conductive silver grid 13.The material of wire netting 12 is silver, the wide 10 μ m of silver-colored netting twine, average thickness 400nm.Film surface comprises conductive region 21 and insulating regions 22, all lays the identical irregular polygon random grid of mesh-density in the zone, the average diameter of grid
RBe 400 μ m.
In the present embodiment, the type of random grid is isotropism irregular polygon grid, and the below will analyze take the random grid of as shown in Figure 3 5mm*5mm area the angular distribution of its grid line as example.
Random grid shown in Figure 3 comprises 4257 line segments altogether.As shown in Figure 4, the statistics every line segment with the X-axis angle
θObtain one-dimension array
θ(1) ~
θ(4257); And then with 5
oFor interval layout, with 0 ~ 180
oBe divided into 36 angular interval; Drop on each interval interior probability in the statistics line segment
p, obtain one-dimension array
p(1) ~
p(36), as shown in Figure 5; At last according to the standard deviation computing formula:
In the formula
nBe 36, can obtain standard deviation
sBe 0.26%, average probability is 2.78%.Thus
S/=9.31%, the grid line of visible above-mentioned random grid is very even in angular distribution, can effectively avoid the generation of Moire fringe.
Use width between conductive region 21 and the insulating regions 22
dWhite space separate, thereby realize electric isolated.In the present embodiment
dBe 10 μ m, these width naked eyes are invisible after tested.Conductive region is drawn by silver-colored wire 23.Because trellis-type and the density of conductive region and insulating regions are in full accord, therefore obviously its transmitance is also in full accord, thereby will can not produce grey scale change.
Embodiment 2:
In the present embodiment, the cross sectional representation of patterned flexible transparent conductive film as shown in Figure 6.Film is PET 61 from bottom to top successively, and thickness is 188 μ m; Adhesion promoting layer 62; Esters of acrylic acid UV glue 63 with groove structure, gash depth 3 μ m, width 2.2 μ m; What fill in the groove is argent 64, and thickness is about 2 μ m less than gash depth.
The floor map of the patterned flexible transparent conductive film of present embodiment as shown in Figure 7.Film surface comprises conductive region 71 and insulating regions 72, all lays the identical irregular polygon random grid of mesh-density in the zone, the average diameter of grid
RAll be preferably 120 μ m.Use width between conductive region 71 and the insulating regions 72
dWhite space separate.In the present embodiment
dPreferred 3 μ m, these width naked eyes are invisible after tested.Disconnection process is all done at the grid node place of insulating regions 72, and preferred processing method is in this city example: will be centered by each node, and the groove structure cancellation in the radius 3 μ m.After above-mentioned graphical electrically conducting transparent film preparation finishes, conductive region will use the silver-colored line 73 of silk-screen fabrication techniques to draw.
Used random grid type is consistent with embodiment 1 in the present embodiment, therefore also can not produce Moire fringe.Because insulating regions is to be made of the isolated netting twine that disconnects each other, therefore can realize thoroughly non-conductive.
PET selected in the present embodiment is 91.4% at the mean transmissivity of visible light wave range, and the relative transmitance of conductive region and insulating regions grid is respectively 96% and 96.2%.Both transmitances are respectively 87.72% and 87.93% thus, differ 0.21%.Experimental results show that these transmitance difference naked eyes can't discover, therefore will can not produce obvious intensity contrast.
Embodiment 3:
In the present embodiment, the cross sectional representation of patterned transparent conductive film as shown in Figure 8.Film is hard glass substrate 91 from bottom to top successively, and thickness is 1mm; Esters of acrylic acid UV glue 92 with groove structure, gash depth 3 μ m, width 2.2 μ m; What fill in the groove is argent 93, and thickness is about 2 μ m less than gash depth.
The floor map of the patterned transparent conductive film of present embodiment as shown in Figure 9.Film surface still comprises conductive region 101 and insulating regions 102, all lays the identical irregular polygon random grid of mesh-density in the zone.The average diameter of the grid of conductive region 101
R 1All be preferably 120 μ m, but insulating regions 102 average diameters
R 2Be preferably 118 μ m.Disconnection process is all done at the grid node place of insulating regions 102, and preferred processing method is in this city example: will be centered by each node, and the groove structure cancellation in the radius 3 μ m.After above-mentioned graphical electrically conducting transparent film preparation finishes, conductive region will use the silver-colored line 103 of silk-screen fabrication techniques to draw.
The described graphical nesa coating of embodiment will can not produce Moire fringe when being attached at the LCD surface thus.Because insulating regions is to be made of the isolated netting twine that disconnects each other, therefore can realize thoroughly non-conductive.PET selected in the present embodiment is 91.4% at the mean transmissivity of visible light wave range, and the relative transmitance of conductive region and insulating regions grid is 96%.Both transmitances are 87.72% thus.Therefore will can not produce intensity contrast.
Among the other embodiment, the random grid of irregularly shaped conductive region can also be irregular alveolate texture in the utility model; The random grid of irregularly shaped insulating regions can also be irregular alveolate texture.
Below preferred embodiment of the present utility model is specified, but the utility model is not limited to described embodiment, those of ordinary skill in the art also can make all modification that is equal to or replacement under the prerequisite of the utility model creative spirit, the modification that these are equal to or replacement all are included in the application's claim limited range.
Claims (11)
1. graphical transparent conductive film based on random grid, it is characterized in that: described conductive film surface is divided into conductive region and insulating regions, described conductive region has the grid that is made of metal, the grid of described conductive region is comprised of the grid line of conductive region, and the grid of described conductive region is random grid in irregular shape.
2. the graphical transparent conductive film based on random grid as claimed in claim 1, it is characterized in that: described insulating regions has the grid that is made of metal, and the grid of described insulating regions is comprised of the grid line of insulating regions; The grid of described insulating regions is random grid in irregular shape; The difference of the transmitance of described conductive region and insulating regions is less than 2%.
3. the graphical transparent conductive film based on random grid as claimed in claim 1, it is characterized in that: the grid line of described conductive region is evenly distributed in all angles direction.
4. the graphical transparent conductive film based on random grid as claimed in claim 2, it is characterized in that: the grid line of described insulating regions is evenly distributed in all angles direction.
5. such as the arbitrary described graphical transparent conductive film based on random grid of claim 1 to 4, it is characterized in that: the grid line of described random grid is groove structure.
6. such as the arbitrary described graphical transparent conductive film based on random grid of claim 1 to 4, it is characterized in that: the random grid of described conductive region is the grid that irregular polygon consists of.
7. such as claim 2 or 4 described graphical transparent conductive films based on random grid, it is characterized in that: the random grid of described insulating regions is the grid of irregular polygon formation or the irregular polygon grid that node disconnects.
8. such as claim 2 or 4 described graphical transparent conductive films based on random grid, it is characterized in that: the described random grid of described conductive region and described insulating regions meets the following conditions: the grid line in the described random grid is straightway, and θ is evenly distributed with dextrad horizontal direction X-axis angulation, described each the bar random grid of statistics that evenly is distributed as
θValue; Then according to 5
oStep pitch, statistics drops on the probability of grid line in each angular interval
p i, thus 0 ~ 180
oObtain with 36 interior angular interval
p 1,
p 2Extremely
p 36 p iSatisfy standard deviation less than 20% of arithmetic equal value.
9. the graphical transparent conductive film based on random grid as claimed in claim 2 is characterized in that: insulate between the grid line of described insulating regions and the grid line of conductive region.
10. the graphical transparent conductive film based on random grid as claimed in claim 9, it is characterized in that: the mode of the grid line of described insulating regions and the insulation of the grid line of conductive region is: be interconnected between the grid line of described insulating regions, isolate out between the grid line of described insulating regions and the grid line of described conductive region; Perhaps the grid of described insulating regions is comprised of the grid line that does not have node and disconnect each other.
11. the graphical transparent conductive film based on random grid as claimed in claim 10 is characterized in that: the minimum range of the per two grid line head and the tail end points that mutually disconnect in the grid of described insulating regions is less than 30 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220206023 CN202677865U (en) | 2012-05-09 | 2012-05-09 | Patterned transparent conductive thin film based on random grids |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220206023 CN202677865U (en) | 2012-05-09 | 2012-05-09 | Patterned transparent conductive thin film based on random grids |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202677865U true CN202677865U (en) | 2013-01-16 |
Family
ID=47498751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220206023 Expired - Fee Related CN202677865U (en) | 2012-05-09 | 2012-05-09 | Patterned transparent conductive thin film based on random grids |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202677865U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013166841A1 (en) * | 2012-05-09 | 2013-11-14 | 南昌欧菲光科技有限公司 | Random-grid-based graphical transparent conductive thin film |
| CN103426501A (en) * | 2013-02-04 | 2013-12-04 | 南昌欧菲光科技有限公司 | Transparent conductive film |
| CN103426502A (en) * | 2013-02-05 | 2013-12-04 | 南昌欧菲光科技有限公司 | Patterned transparent conductive film |
| CN103426500A (en) * | 2013-02-04 | 2013-12-04 | 南昌欧菲光科技有限公司 | Double-layer transparent conductive film and preparation method thereof |
| CN103545021A (en) * | 2013-11-06 | 2014-01-29 | 北京印刷学院 | Metal grid type transparent conducting thin film and manufacturing method thereof |
| TWI492121B (en) * | 2013-04-02 | 2015-07-11 | 深圳歐菲光科技股份有限公司 | Touch screen |
| TWI493422B (en) * | 2013-03-28 | 2015-07-21 | 南昌歐菲光科技有限公司 | Capacitive touch screen |
| TWI497391B (en) * | 2013-03-28 | 2015-08-21 | Nanchang O Film Tech Co Ltd | Capacitive-type transparent conductivie film and method for production thereof |
| US9201551B2 (en) | 2013-03-28 | 2015-12-01 | Nanchang O-Film Tech. Co., Ltd. | Capacitive touch screen |
-
2012
- 2012-05-09 CN CN 201220206023 patent/CN202677865U/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013166841A1 (en) * | 2012-05-09 | 2013-11-14 | 南昌欧菲光科技有限公司 | Random-grid-based graphical transparent conductive thin film |
| CN103426501A (en) * | 2013-02-04 | 2013-12-04 | 南昌欧菲光科技有限公司 | Transparent conductive film |
| CN103426501B (en) * | 2013-02-04 | 2016-04-13 | 南昌欧菲光科技有限公司 | Nesa coating |
| CN103426500A (en) * | 2013-02-04 | 2013-12-04 | 南昌欧菲光科技有限公司 | Double-layer transparent conductive film and preparation method thereof |
| CN103426500B (en) * | 2013-02-04 | 2016-03-09 | 南昌欧菲光科技有限公司 | double-layer transparent conductive film and preparation method thereof |
| WO2014117479A1 (en) * | 2013-02-04 | 2014-08-07 | 南昌欧菲光科技有限公司 | Transparent conductive film |
| TWI503875B (en) * | 2013-02-05 | 2015-10-11 | Nanchang O Film Tech Co Ltd | Patterned transparent conductive film |
| CN103426502A (en) * | 2013-02-05 | 2013-12-04 | 南昌欧菲光科技有限公司 | Patterned transparent conductive film |
| CN103426502B (en) * | 2013-02-05 | 2016-08-03 | 南昌欧菲光科技有限公司 | Patterned transparent conducting film |
| TWI493422B (en) * | 2013-03-28 | 2015-07-21 | 南昌歐菲光科技有限公司 | Capacitive touch screen |
| TWI497391B (en) * | 2013-03-28 | 2015-08-21 | Nanchang O Film Tech Co Ltd | Capacitive-type transparent conductivie film and method for production thereof |
| US9201551B2 (en) | 2013-03-28 | 2015-12-01 | Nanchang O-Film Tech. Co., Ltd. | Capacitive touch screen |
| TWI492121B (en) * | 2013-04-02 | 2015-07-11 | 深圳歐菲光科技股份有限公司 | Touch screen |
| CN103545021A (en) * | 2013-11-06 | 2014-01-29 | 北京印刷学院 | Metal grid type transparent conducting thin film and manufacturing method thereof |
| CN103545021B (en) * | 2013-11-06 | 2016-06-29 | 北京印刷学院 | A kind of metal grid type transparent conductive film and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102723126B (en) | A kind of patterned transparent conductive film based on random grid | |
| CN202677865U (en) | Patterned transparent conductive thin film based on random grids | |
| CN102902856B (en) | Random mesh design method of metal net conductive thin film, conductive film and manufacturing method of conductive film | |
| CN102930922B (en) | Transparent conducting film with anisotropic conductivity | |
| CN103198885B (en) | Conducting film, manufacturing method thereof and touch screen comprising same | |
| CN103426502B (en) | Patterned transparent conducting film | |
| CN103165226A (en) | Transparent conductive film and preparation method thereof | |
| US20140356584A1 (en) | Transparent conductive film | |
| CN203658975U (en) | Touch control panel | |
| CN104216598A (en) | Touch substrate, manufacturing method of touch substrate and touch display device | |
| CN203910286U (en) | Transparent conductive film and electronic device comprising the same | |
| CN103208326B (en) | Conductive film, manufacturing method thereof and touch screen containing conductive film | |
| CN103219069B (en) | Conducting film and preparation method thereof, and touch screen comprising conducting film | |
| CN103871547B (en) | Nesa coating and the electronic installation containing the nesa coating | |
| CN203179573U (en) | Conductive film and touch screen comprising conductive film | |
| CN203179571U (en) | Transparent conducting film | |
| CN104461156A (en) | Touch screen manufacturing method, touch screen and touch device | |
| CN203882639U (en) | Conductive film and touch screen comprising same | |
| CN104281314A (en) | Design and method of touch panel | |
| CN103809797A (en) | Touch electrode device | |
| CN203520349U (en) | Design of touch panel | |
| CN203386174U (en) | Optical filter module and touch display screen comprising optical filter module | |
| CN111009339A (en) | Conductive structure, preparation method thereof, touch panel and display device | |
| CN203733489U (en) | Transparent conducting film and electronic equipment | |
| CN203179572U (en) | Conductive film and touch screen comprising conductive film |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20180509 |