CN102902856B - Random mesh design method of metal net conductive thin film, conductive film and manufacturing method of conductive film - Google Patents
Random mesh design method of metal net conductive thin film, conductive film and manufacturing method of conductive film Download PDFInfo
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- CN102902856B CN102902856B CN201210374440.4A CN201210374440A CN102902856B CN 102902856 B CN102902856 B CN 102902856B CN 201210374440 A CN201210374440 A CN 201210374440A CN 102902856 B CN102902856 B CN 102902856B
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Abstract
This application discloses a kind of random grid design methods of metal mesh conductive film, include the following steps:
, a regular figure is drawn in two-dimensional surface rectangular coordinate system in space, the periodical grid which is made of as unit grid periodic arrangement in a two-dimensional plane, formation unit grid;
, in step
Described in the effective coverage for producing random point is defined inside unit grid;
, in step
Described in random point is generated inside effective coverage;
, by step
Described in random point be connected according to certain rules, form the random grid that is made of irregular figure. The invention also discloses a kind of conductive films and preparation method thereof. The periodical grid that core of the invention is made of regular figure generates the random grid that irregular polygon forms, and avoids the generation of Moire fringe and eliminates transmitance difference.
Description
Technical field
The invention belongs to conducting film field, particularly relate to a kind of random grid method for designing, conducting film and preparation method thereof of wire netting conductive film.
Background technology
ITO(Indium tin oxide, tin indium oxide) layer is vital ingredient in touch-screen module, due to traditional handicraft comprise ITO plated film, ITO pattern, conductive silver wire make, Making programme is loaded down with trivial details, therefore yield control difficulty, and a large amount of ITO and metal material can be wasted.Compare the loaded down with trivial details of ITO pattern chemical industry sequence, use print process directly to form metal grill in the appointed area of base material, patterned technological process can be saved, there is the plurality of advantages such as low stain, low cost.Along with handset touch panel ultrathin, light-weighted development trend, flexible patterned metal net conducting film is used widely.Dai Nippon Printing of Japanese firm, Fujiphoto and prefecture scholar, German company PolyIC, u s company Atmel and Chinese companies Suzhou are received lattice photoelectricity and are used printing process to obtain the patterned metal net conductive film of excellent performance all respectively.
But existing metal grill is the periodicity grid of regular shape mostly, such as rectangular node, rhombic-shaped grid etc.Pixel cell due to LCD is also the rectangular element of regular shape, can produce serious Moire fringe when the nesa coating so this kind of with periodically metal grill is covered on LCD surface.In addition, above-mentioned metal grill film is all generally the metal grill laying regular shape at conductive region; And there is no metal grill at insulating regions.Therefore transmitance difference is certainly existed between conductive region and insulating regions.This transmitance difference can cause user indistinctly can see the figure of conductive region, affects overall appearance effect.
In sum, the major defect of prior art is:
1, Moire fringe phenomenon: the conductive region of film is the grid of regular shape, there will be comparatively significantly Moire fringe, affects visual effect when this wire netting conductive film being attached at LCD surface; In addition identical principle, the laminating of two regular grid conducting films also can produce obvious Moire fringe.This phenomenon seriously constrains the application of the patterned transparent conducting film with metal grill undoubtedly.
2, transmitance difference: the conductive region of film has metal grill, its transmitance can according to the shading specific damping of mesh lines; But insulating regions does not have metal grill, therefore the transmitance in this region is necessarily greater than conductive region.When being applied to display field, this transmitance difference can cause user indistinctly can see the figure of conductive region, affects overall appearance effect.
Summary of the invention
In view of this, object of the present invention provides a kind of random grid method for designing, conducting film and preparation method thereof of wire netting conductive film, to solve Moire fringe phenomenon and transmitance difference.
For achieving the above object, the invention provides following technical scheme:
A random grid method for designing for wire netting conductive film, comprises the steps:
, in two dimensional surface rectangular coordinate system in space draw a regular figure, using this regular figure as unit grid periodic arrangement in two dimensional surface, form the periodicity grid be made up of unit grid;
, in step
described in the definition of unit grid inside can generate the effective coverage of random point;
, in step
described in effective coverage inside generate random point;
, by step
described in random point be connected according to certain rules, form the random grid be made up of irregular figure.
Preferably, in the random grid method for designing of above-mentioned wire netting conductive film, described step
in, described regular figure is square, regular hexagon or circle.
Preferably, in the random grid method for designing of above-mentioned wire netting conductive film, when described regular figure is square, described step
in, described random point method of attachment is: be connected by the random point of same a line adjacent square inside, and the random point of same row adjacent square inside is also connected, and forms the random grid be made up of irregular quadrilateral.
Preferably, in the random grid method for designing of above-mentioned wire netting conductive film, when described regular figure is regular hexagon, random grid method for designing comprises:
(1), in periodicity grid, choose a regular hexagon as center, define the effective coverage that can generate random point adjacent with this center six regular hexagon inside;
(2), in described effective coverage, random point is generated;
(3), connect described random point, form irregular hexagon.
The invention also discloses a kind of conducting film, be printed with above-mentioned random grid, comprise conductive region and insulating regions, spacing between described conductive region and insulating regions is less than or equal to 10 microns, described random grid is formed on described conductive region and insulating regions, and the random grid be located on described insulating regions disconnects at Nodes.
Preferably, in the method for making of above-mentioned conducting film, comprise the steps:
(1) random point generated with inside, described effective coverage for the center of circle,
rfor radius, draw circle;
(2) line within circle and point is deleted;
(3) trajectory of circle itself is deleted.
Preferably, in the method for making of above-mentioned conducting film, described in
rvalue be less than or equal to 25 microns.
Compared with prior art, the invention has the advantages that:
1, the random grid method for designing for wire netting conductive film provided by the present invention, the periodicity pixel cell avoiding lighttight metal grid lines and LCD produces and periodically covers, and then in principle, avoid the generation of Moire fringe, breach and perplex the technical bottleneck that metallic mesh class nesa coating is applied to LCD surface all the time;
2, conductive region provided by the present invention and insulating regions all have similar random grid, and interval is less than 10 μm between the two, therefore can not produce macroscopic gray difference.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, the accompanying drawing that the following describes is only some embodiments recorded in the application, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the network of quadrilaterals ruling partial schematic diagram of first embodiment of the invention;
Fig. 2 is the hexagonal mesh line partial schematic diagram of second embodiment of the invention;
Fig. 3 is conductive region and the insulating regions partial schematic diagram of the present invention the 3rd embodiment;
Fig. 4 is the insulating regions node disconnect method partial schematic diagram of the present invention the 3rd embodiment.
Embodiment
The embodiment of the invention discloses a kind of random grid method for designing of wire netting conductive film, comprise the steps:
, in two dimensional surface rectangular coordinate system in space draw a regular figure, using this regular figure as unit grid periodic arrangement in two dimensional surface, form the periodicity grid be made up of unit grid;
, in step
described in the definition of unit grid inside can generate the effective coverage of random point;
, in step
described in effective coverage inside generate random point;
, by step
described in random point be connected according to certain rules, form the random grid be made up of irregular figure.
The embodiment of the invention also discloses a kind of conducting film, be printed with above-mentioned random grid, comprise conductive region and insulating regions, it is characterized in that, spacing between described conductive region and insulating regions is less than or equal to 10 microns, described random grid is formed on described conductive region and insulating regions, and the random grid be located on described insulating regions disconnects at Nodes.
Correspondingly, the invention also discloses the method for making of above-mentioned conducting film, comprise the steps:
(1) random point generated with inside, described effective coverage for the center of circle,
rfor radius, draw circle;
(2) line within circle and point is deleted;
(3) trajectory of circle itself is deleted.
The random grid that the periodicity mess generation irregular polygon that core of the present invention is made up of regular figure forms, its feature is that random degree is controlled, and grid node is known, may be partitioned into disconnected random grid.Use grid in irregular shape, avoid forming periodic line with regular grid and overlap, thus thoroughly avoid the generation of Moire fringe.The random grid that node disconnects is laid in this external film-insulated region, eliminates transmitance difference.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be described in detail the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belongs to the scope of protection of the invention.
Embodiment one:
In the present embodiment, the type of random grid is irregular quadrilateral grid, as shown in 11 in Fig. 1.First in two dimensional surface space, rectangular coordinate system is set up, a square 12 is drawn in this rectangular coordinate system, four apex coordinates of square 12 are respectively (0,0), (a, 0), (a, a), (0, a), by this square 12 array arrangement in two dimensional surface, be along the cycle on x, y direction
a, form square regular grid; Then the effective coverage of random point can be generated in each square interior definition, center, effective coverage and square center
oidentical, as shown in the shadow region 13 in Fig. 1, and generate random point in effective coverage 13, in the present embodiment, effective coverage is also square, and the length of side is
b; Finally be connected by the random point of same a line square interior respectively, the random point of same row square interior is also connected, and forms the random grid be made up of irregular quadrilateral.Based on the random grid that this method generates, generate because grid node is limited in effective coverage 13, so the length of side by controlling effective coverage 13
bsize, just can control the random degree of irregular quadrilateral grid, effective coverage area is larger, and random degree is higher.
Embodiment two:
In the present embodiment, the type of random grid is irregular hexagonal mesh, as shown in 21 in Fig. 2.Similar to Example 1ly, first in two dimensional surface space, set up rectangular coordinate system, in this rectangular coordinate system, draw a regular hexagon 22, the length of side is
a, by regular hexagon 22 array arrangement in two dimensional surface, form typical honeycomb grid; Then choose a regular hexagon as center 23, define the effective coverage that can generate random point, center, effective coverage and each orthohexagonal center adjacent with this center six regular hexagon inside
oidentical, in the present embodiment, effective coverage is also regular hexagon, and the length of side is
b, as shown in the shadow region 24 in Fig. 2, in effective coverage 24, generate random point, the random point of generation be connected clockwise between two, form an irregular hexagon; Finally, then choose another one regular hexagon as new center, new Ying Yuyuan center, center is non-conterminous and nearest, repeats above operation, obtains the random grid be made up of irregular hexagon.Based on the random grid that this method generates, generate because grid node is limited in effective coverage 24, so the length of side by controlling effective coverage 24
bsize, just can control the random degree of irregular regular hexagonal cell, effective coverage area is larger, and random degree is higher.
Embodiment three
In the present embodiment, the type of random grid is irregular hexagonal mesh, and generation method as described in Example 2.As shown in Figure 3, shadow region, left side is the conductive region 31 of wire netting conductive film, lays continuous print hexagon random grid in region; Right side area is the insulating regions 32 of wire netting conductive film, lays the hexagon random grid that node disconnects in region; Width is used between conductive region 31 and insulating regions 32
dwhite space separate, thus realize electrical isolation.In the present embodiment
dbe 10 μm, these width naked eyes are invisible after tested.Due to the trellis-type of conductive region and insulating regions and density completely the same, the mesh lines shading namely in two regions is than identical, and therefore obviously its transmitance is also completely the same, thus can not produce grey scale change.Node disconnect method, as shown in Figure 4, first with node 42 for the center of circle,
rfor radius, 0<
r<25 μm, draws circle 41, and the edge line of circle 41 and random grid has just had intersection point like this, now deletes lines and node 42 in circle, and deletes the trace of circle 41 itself, now just becomes the situation that insulating regions 32 interior joint in Fig. 3 disconnects.
Needs illustrate, the dimensional parameters exemplified in each embodiment above-mentioned and mesh shape, only in order to enforcement state of the present invention is described, for the width of conductive region grid and insulating regions grid, as long as this width is less than the limiting resolution of human eye, does not namely affect and watch as the normal of display device.
In sum, the invention has the advantages that:
1, the random grid method for designing for wire netting conductive film provided by the present invention, the periodicity pixel cell avoiding lighttight metal grid lines and LCD produces and periodically covers, and then in principle, avoid the generation of Moire fringe, breach and perplex the technical bottleneck that metallic mesh class nesa coating is applied to LCD surface all the time;
2, conductive region provided by the present invention and insulating regions all have similar random grid, and interval is less than 10 μm between the two, therefore can not produce macroscopic gray difference.
It should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operational zone, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
The above is only the embodiment of the application; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the application's principle; can also make some improvements and modifications, these improvements and modifications also should be considered as the protection domain of the application.
Claims (7)
1. a random grid method for designing for wire netting conductive film, is characterized in that, comprise the steps:
, in two dimensional surface rectangular coordinate system in space draw a regular figure, using this regular figure as unit grid periodic arrangement in two dimensional surface, form the periodicity grid be made up of unit grid;
, in step
described in the definition of unit grid inside can generate the effective coverage of random point;
, in step
described in effective coverage inside generate random point;
, by step
described in random point be connected according to certain rules, form the random grid for wire netting conductive film be made up of irregular figure.
2. the random grid method for designing of wire netting conductive film according to claim 1, is characterized in that, described step
in, described regular figure is square, regular hexagon or circle.
3. the random grid method for designing of wire netting conductive film according to claim 2, is characterized in that, when described regular figure is square, and described step
in, described random point method of attachment is: be connected by the random point of same a line adjacent square inside, and the random point of same row adjacent square inside is also connected, and forms the random grid be made up of irregular quadrilateral.
4. the random grid method for designing of wire netting conductive film according to claim 2, is characterized in that, when described regular figure is regular hexagon, random grid method for designing comprises:
(1), in periodicity grid, choose a regular hexagon as center, define the effective coverage that can generate random point adjacent with this center six regular hexagon inside;
(2), in described effective coverage, random point is generated;
(3), connect described random point, form irregular hexagon.
5. a conducting film, be printed with the arbitrary described random grid of Claims 1-4, comprise conductive region and insulating regions, it is characterized in that, spacing between described conductive region and insulating regions is less than or equal to 10 microns, described random grid is formed on described conductive region and insulating regions, and the random grid be located on described insulating regions disconnects at Nodes.
6. the method for making of conducting film according to claim 5, is characterized in that, comprises the steps:
(1) random point generated with inside, described effective coverage for the center of circle,
rfor radius, draw circle;
(2) line within circle and point is deleted;
(3) trajectory of circle itself is deleted.
7. the method for making of conducting film according to claim 6, is characterized in that, described in
rvalue be less than or equal to 25 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210374440.4A CN102902856B (en) | 2012-09-27 | 2012-09-27 | Random mesh design method of metal net conductive thin film, conductive film and manufacturing method of conductive film |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210374440.4A CN102902856B (en) | 2012-09-27 | 2012-09-27 | Random mesh design method of metal net conductive thin film, conductive film and manufacturing method of conductive film |
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| CN102902856A CN102902856A (en) | 2013-01-30 |
| CN102902856B true CN102902856B (en) | 2015-03-04 |
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| CN102723126B (en) * | 2012-05-09 | 2015-10-21 | 南昌欧菲光科技有限公司 | A kind of patterned transparent conductive film based on random grid |
| CN103426501B (en) * | 2013-02-04 | 2016-04-13 | 南昌欧菲光科技有限公司 | Nesa coating |
| 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 |
| CN103106953B (en) * | 2013-02-06 | 2014-11-26 | 南昌欧菲光科技有限公司 | Conducting film and preparation method thereof and touch screen comprising the same |
| US9954526B2 (en) | 2013-09-09 | 2018-04-24 | Atmel Corporation | Generic randomized mesh design |
| TWI518434B (en) * | 2014-04-25 | 2016-01-21 | 元太科技工業股份有限公司 | Display device |
| CN104409172B (en) * | 2014-05-31 | 2017-01-18 | 福州大学 | 3D manufacturing method of latticed conducting array |
| CN105448385A (en) * | 2014-07-18 | 2016-03-30 | 深圳欧菲光科技股份有限公司 | Transparent conductive film and electronic equipment |
| US9946426B2 (en) * | 2014-11-25 | 2018-04-17 | Interface Optoelectronics Corporation | Method for forming metal mesh pattern and touch panel |
| CN106843558A (en) * | 2015-12-04 | 2017-06-13 | 介面光电股份有限公司 | The sensing metal grill and its preparation method of contact panel |
| TWI584169B (en) * | 2015-12-18 | 2017-05-21 | 介面光電股份有限公司 | Touch panel having sensing metal mesh and manufacturing method thereof |
| JP6423058B1 (en) * | 2017-08-25 | 2018-11-14 | 日本航空電子工業株式会社 | Base material |
| CN109659091B (en) * | 2017-10-12 | 2021-05-14 | 苏州维业达触控科技有限公司 | Design method of random grid, preparation method of conductive film, conductive film and display device |
| CN108174592A (en) * | 2017-12-21 | 2018-06-15 | 哈尔滨工业大学 | Based on center location annulus grid design method overlapping with variable diameters at random |
| CN108207106A (en) * | 2017-12-21 | 2018-06-26 | 哈尔滨工业大学 | Based on random overlapping cylinder grid millimeter wave/Optical multi-mode detection electromagnetic armouring structure |
| CN108340515A (en) * | 2018-02-08 | 2018-07-31 | 浙江锦辉光电材料有限公司 | A kind of production method of optical film and its mold with random grid structure |
| CN109360251A (en) * | 2018-09-06 | 2019-02-19 | 秦皇岛波盾电子有限公司 | A kind of non-angular Transparent shielding random grid pattern generation method |
| CN109739387B (en) * | 2019-01-08 | 2022-02-01 | 广州国显科技有限公司 | Metal grid forming method, device and equipment, conductive film and touch panel |
| CN112445362B (en) * | 2019-09-05 | 2022-08-05 | 苏州维业达触控科技有限公司 | Method for generating random grid pattern of conductive film and application thereof |
| US11877390B2 (en) | 2021-08-30 | 2024-01-16 | International Business Machines Corporation | Fabricating tamper-respondent sensors with random three-dimensional security patterns |
| CN114727577B (en) * | 2022-04-22 | 2023-03-28 | 有研国晶辉新材料有限公司 | Electromagnetic shielding metal mesh for optical window and preparation method thereof |
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