CN111025440A - Prism structure for laminating film and processing method and application thereof - Google Patents
Prism structure for laminating film and processing method and application thereof Download PDFInfo
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- CN111025440A CN111025440A CN201911409821.XA CN201911409821A CN111025440A CN 111025440 A CN111025440 A CN 111025440A CN 201911409821 A CN201911409821 A CN 201911409821A CN 111025440 A CN111025440 A CN 111025440A
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- prism structure
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- 238000010030 laminating Methods 0.000 title claims abstract description 27
- 238000003672 processing method Methods 0.000 title claims abstract description 25
- OFNHPGDEEMZPFG-UHFFFAOYSA-N phosphanylidynenickel Chemical compound [P].[Ni] OFNHPGDEEMZPFG-UHFFFAOYSA-N 0.000 claims abstract description 52
- 239000000463 material Substances 0.000 claims abstract description 31
- 238000009713 electroplating Methods 0.000 claims abstract description 21
- 239000002313 adhesive film Substances 0.000 claims abstract description 19
- 239000003292 glue Substances 0.000 claims abstract description 12
- 229910003460 diamond Inorganic materials 0.000 claims description 37
- 239000010432 diamond Substances 0.000 claims description 37
- 238000005520 cutting process Methods 0.000 claims description 32
- 239000004973 liquid crystal related substance Substances 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 8
- 238000007747 plating Methods 0.000 claims description 6
- 239000000758 substrate Substances 0.000 claims description 6
- 239000011347 resin Substances 0.000 abstract description 10
- 229920005989 resin Polymers 0.000 abstract description 10
- 238000005516 engineering process Methods 0.000 abstract description 8
- 238000004140 cleaning Methods 0.000 abstract description 3
- 238000010023 transfer printing Methods 0.000 abstract 1
- 239000010408 film Substances 0.000 description 41
- 229920000139 polyethylene terephthalate Polymers 0.000 description 11
- 239000005020 polyethylene terephthalate Substances 0.000 description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 7
- 229910052802 copper Inorganic materials 0.000 description 7
- 239000010949 copper Substances 0.000 description 7
- 239000004925 Acrylic resin Substances 0.000 description 6
- 229920000178 Acrylic resin Polymers 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 238000009792 diffusion process Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- -1 polyethylene terephthalate Polymers 0.000 description 4
- 238000000889 atomisation Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 238000005488 sandblasting Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- JAWMENYCRQKKJY-UHFFFAOYSA-N [3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-ylmethyl)-1-oxa-2,8-diazaspiro[4.5]dec-2-en-8-yl]-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]methanone Chemical compound N1N=NC=2CN(CCC=21)CC1=NOC2(C1)CCN(CC2)C(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F JAWMENYCRQKKJY-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000012788 optical film Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/04—Prisms
- G02B5/045—Prism arrays
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
- G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
Abstract
The invention discloses a processing method of a prism structure for a laminating film, which comprises the following steps: electroplating nickel phosphorus on the surface of the roller, processing the nickel phosphorus electroplated layer on the surface of the roller to generate a microstructure on the nickel phosphorus electroplated layer, transferring and copying the microstructure by adopting a base material coated with glue, and finally curing to obtain the prism structure for the laminating film. The processing method can form microstructures which are arranged at intervals by the concave structures and the annular grooves on the surface of the roller, transfer printing can be carried out on the microstructures by the base material coated with glue, and prism structures for laminating films are formed on the base material and comprise prism unit structures and micro-convex unit structures. The processing method reduces the time required by the assembly of the adhesive film, simplifies the processing technology, reduces the processing difficulty compared with the prior processing mode, and simultaneously reduces the time and the cost for cleaning residual resin.
Description
Technical Field
The invention relates to a prism structure for a laminating film and a processing method and application thereof.
Background
With the popularization of TFT-LCD liquid crystal display technology, the demand of backlight modules and related optical films in liquid crystal displays is increasing. With the impact of the new OLED technology, the industry reduces the selling price of the LCD, and needs lower price corresponding to the raw material, so that the cost is correspondingly reduced; therefore, a backlight module structure that the original D + P + P + DP (i.e. the sequence from top to bottom is up diffusion, light increasing and diffusion plate) is directly replaced by the laminating film for the multilayer liquid crystal display with 2 layers, 3 layers and even 4 layers appears. The structure can reduce the selling price cost of the product and the manual assembly cost.
The lowest layer of the laminated film adopts a structure with high haze and strong shielding property to replace a diffusion plate in a backlight film group, and the structure is that prism structures with equal intervals are carved out firstly, and then alumina fragments are uniformly sprayed on the surface of the structure to achieve an atomization effect. However, the structure processing technology is complex, and the base roller is required to be electroplated with precise copper firstly, and parameters such as defects, thickness, hardness and the like of a copper layer are checked; then, the base roll frame is arranged on an ultra-precision processing machine, and a diamond cutter is used for processing a prism structure; after the prism structure is processed, unloading and mounting the base roller on a sand blasting machine table, and spraying aluminum oxide scraps on the surface of the prism structure; finally, electroplating a chromium layer on the surface of the copper layer; the time of the whole processing technology is as long as 8 to 10 days. Further, in the process of using the structure, since the surface of the prism structure is roughened, a part of the resin remains in the prism structure during the transfer of the UV curable resin, thereby affecting the circumference of the mold and causing poor periodicity of the prism structure.
Disclosure of Invention
The invention provides a prism structure for a laminating film, a processing method and application thereof, aiming at overcoming the defects of the prior art.
In order to achieve the above purpose, the invention is realized by the following technical scheme:
a processing method of a prism structure for a laminating film comprises the following steps:
electroplating nickel phosphorus on the surface of the roller, processing the nickel phosphorus electroplated layer on the surface of the roller to generate a microstructure on the nickel phosphorus electroplated layer, transferring and copying the microstructure by adopting a base material coated with glue, and finally curing to obtain the prism structure for the laminating film.
Preferably, the nickel-phosphorus electroplated layer has a thickness of 200 to 3000 μm and a hardness of 550 to 580 HB.
Preferably, before the processing, the roller subjected to the electroplating is kept at a constant temperature of 22 ℃ +/-0.5 ℃ for at least 24 hours.
Preferably, the nickel-phosphorus electroplated layer on the surface of the roller is processed and treated, and the method comprises the following steps:
and placing the roller on an ultra-precision processing machine, calibrating the runout value of the roller to be less than 5 mu m, and sequentially carrying out thread cutting and equidistant carving on the nickel-phosphorus electroplated layer by adopting a diamond cutter so as to form a microstructure on the nickel-phosphorus electroplated layer.
Preferably, after the run-out value of the roller is calibrated, the nickel-phosphorus electroplated layer is subjected to leveling treatment by adopting a diamond cutter.
Preferably, the nickel-phosphorus electroplated layer is subjected to thread cutting by using a diamond cutter with a circular arc blade, so that a concave structure is formed on the nickel-phosphorus electroplated layer, wherein the circular arc blade of the diamond cutter has an R angle with the radius of 100-200 mu m.
Preferably, the depth of thread cutting is set to 2 to 10 μm, and the frequency is set to 15000 to 20000 HZ.
Preferably, concave annular grooves are carved on the nickel-phosphorus electroplated layer at equal intervals by adopting a diamond cutter with an isosceles triangle cutting edge, wherein the vertex angle of the cutting edge of the diamond cutter is 88-90 degrees.
Preferably, the processing depth of the diamond cutter blade is 30-40 μm.
Preferably, the substrate coated with the glue is a PET substrate coated with ultraviolet-curing acrylic resin.
Preferably, after curing, a prism structure for the adhesive film is obtained on the substrate, wherein the prism structure comprises a plurality of prism unit structures and micro-convex unit structures, and the prism unit structures and the micro-convex unit structures are arranged at intervals.
Preferably, the cross section of the prism unit structure is an isosceles triangle with an apex angle of 89-91 degrees, the side length of the bottom edge of the isosceles triangle is 60-80 μm, the height of the bottom edge of the isosceles triangle is 30-40 μm, and a gap with a distance of 200-220 μm is formed between the adjacent prism unit structures.
Preferably, the height of the micro-convex unit structure is 2-5 μm.
Another object of the present invention is to provide a prism structure for a bonding film.
In order to achieve the above purpose, the invention is realized by the following technical scheme:
the prism structure for the laminating film is manufactured by the processing method of the prism structure for the laminating film, and comprises a plurality of prism unit structures and micro-convex unit structures which are arranged at intervals.
Preferably, the cross section of the prism unit structure is an isosceles triangle with an apex angle of 89-91 degrees, the side length of the bottom edge of the isosceles triangle is 60-80 μm, the height of the bottom edge of the isosceles triangle is 30-40 μm, and a gap with a distance of 200-220 μm is formed between the adjacent prism unit structures.
Preferably, the height of the micro-convex unit structure is 2-5 μm.
Another object of the present invention is to provide a use of the prism structure for a bonding film.
In order to achieve the above purpose, the invention is realized by the following technical scheme:
the application of the prism structure for the adhesive film or the application of the prism structure for the adhesive film obtained by the processing method of the prism structure for the adhesive film is used for preparing the adhesive film for the liquid crystal display, and the adhesive film for the liquid crystal display comprises the prism structure and a substrate.
The invention provides a prism structure for a bonding film, a processing method and application thereof. The processing method reduces the time required by the assembly of the adhesive film, simplifies the processing technology, and reduces the processing difficulty compared with the prior processing mode; in addition, because the processing method of the invention does not cause the resin to be remained in the microstructure on the surface of the roller, the length of the prism structure after being copied is longer, the glue for copying the prism structure is easier to demould, and simultaneously, the time and the cost for cleaning the residual resin are reduced.
The special prism structure comprising the prism unit structure which protrudes outwards and has the isosceles triangle section and the micro-convex unit structure can be obtained by the processing method, and the prism layer with the special prism structure can be applied to manufacturing the laminating film for the liquid crystal display, so that the laminating film not only has the effect of improving the brightness, but also has a certain atomization shielding effect. That is, the prism structure which can be applied to the adhesive film for the liquid crystal display is obtained by the processing method of the invention, and is a special structure which combines the intensifying and the diffusion; the prism structure not only has the effect of a brightness enhancement film, but also can control the haze to be between 10% and 60% and play a certain role in shielding; meanwhile, the brightness loss of the adhesive film is small. Therefore, the prism structure for the laminating film and the processing method thereof provided by the invention can reduce the production cost and improve the processing success rate on the premise of meeting the requirements of liquid crystal display products.
Drawings
Fig. 1 is a schematic structural diagram of a nickel-phosphorus electroplating roller in embodiment 1 of the present invention.
Fig. 2 is a sectional view taken along line a-a of fig. 1.
Fig. 3 is a sectional view of the roller after the thread cutting in embodiment 1 of the present invention.
Fig. 4 is a sectional view of the roller engraved at an equal interval in embodiment 1 of the present invention.
Fig. 5 is a schematic structural diagram of a prism film layer having a prism structure with an equal pitch in embodiment 1 of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
The invention provides a processing method of a prism structure for a laminating film, which comprises the following steps:
electroplating nickel phosphorus on the surface of the roller, processing the nickel phosphorus electroplated layer on the surface of the roller to generate a microstructure, transferring and copying the microstructure by adopting a base material coated with glue, and finally curing to obtain the prism structure for the laminating film. The processing method can form microstructures which are arranged at intervals by the concave structures and the annular grooves on the surface of the roller by simple operation, and the microstructures are transferred and copied by adopting a base material coated with glue, so that the prism structure for the laminating film can be obtained on the base material. The prism structure comprises a prism unit structure and a micro-convex unit structure which are outward and have triangular sections, and the prism structure is a special structure which combines light enhancement and diffusion; the prism film with the structure can be used in the liquid crystal display technology, so that the obtained adhesive film for the liquid crystal display not only has the effect of improving brightness, but also has a certain atomization shielding effect.
The thickness of the nickel-phosphorus electroplated layer on the surface of the roller is 200-300 um, and the hardness is 550-580 HB. In the processing method, the surface of the roller is electroplated with nickel and phosphorus, wherein the roller is made of a metal material and has a hollow structure, and the surface of the roller is electroplated with the nickel and phosphorus electroplated layer with moderate hardness, so that the subsequent processing and use are more convenient, and the surface of the roller is not easily oxidized.
Before processing, the roller subjected to electroplating is placed at a constant temperature of 22 +/-0.5 ℃ for at least 24 hours. That is, after the nickel-phosphorus plating is completed, the nickel-phosphorus plating layer needs to be kept at a constant temperature for a certain period of time to solidify.
The nickel-phosphorus electroplated coating processing treatment of the roller surface comprises the following steps:
and (3) placing the roller on an ultra-precision processing machine, calibrating the runout value of the roller to be less than 5 mu m, and sequentially carrying out thread cutting and equidistant carving on the nickel-phosphorus electroplated layer by adopting a diamond cutter. The roller runout value is firstly calibrated to be controlled within 5 mu m, so that the problem that the machining precision is influenced due to the overlarge value and the subsequent uneven cutting occurs is prevented. And then processing the surface of the roller by a diamond cutter to obtain the microstructure.
And after the run-out value of the roller is calibrated, a diamond cutter is adopted to perform leveling treatment on the nickel-phosphorus electroplated layer so as to level the nickel-phosphorus electroplated layer, and then cutting and carving are performed on the leveled nickel-phosphorus electroplated layer.
And (3) carrying out thread cutting on the nickel-phosphorus electroplated layer by adopting a diamond cutter with an arc blade so as to form a concave structure on the nickel-phosphorus electroplated layer, wherein the arc blade of the diamond cutter is provided with an R angle with the radius of 100-200 mu m. The depth of thread cutting is 2 to 10 μm, and the frequency is 15000 to 20000 HZ. After thread cutting, the surface of the roller wheel can obtain an inner concave structure with random size and shape, the prism structure after the inner concave structure is copied by glue can enable the laminating film to play a role in shielding, and the haze can be controlled to be between 10% and 60%.
And engraving inwards concave annular grooves on the nickel-phosphorus electroplated layer at equal intervals by adopting a diamond cutter with an isosceles triangle cutting edge, wherein the vertex angle of the cutting edge of the diamond cutter is 88-90 degrees. The processing depth of the diamond cutter blade is 30-40 mu m. The surface of the roller with the concave structure is provided with pyramid-shaped annular grooves which are concave inwards, and finally, the nickel-phosphorus electroplated layer on the surface of the roller is provided with microstructures formed by the concave structures and the annular grooves at intervals.
In the invention, the base material coated with the glue is a PET base material coated with ultraviolet curing acrylic resin. The ultraviolet light curing acrylic resin is uniformly coated on a PET (polyethylene terephthalate) base material, then the base material is subjected to nickel-phosphorus electroplating to transfer and copy the microstructure on the surface of the roller, and then the base material is subjected to ultraviolet light curing molding to obtain a prism structure on the PET base material. The prism structure comprises a plurality of prism unit structures and a micro-convex unit structure, wherein the prism unit structures and the micro-convex unit structures are arranged at intervals. The cross section of the prism unit structure is an isosceles triangle with an apex angle of 89-91 degrees, the side length of the bottom edge of the isosceles triangle is 60-80 mu m, the height of the bottom edge of the isosceles triangle is 30-40 mu m, and a gap with a distance of 200-220 mu m is formed between every two adjacent prism unit structures. The height of the micro-convex unit structure is 2-5 mu m. A circular section with the diameter of 10-50 mu m is formed between the micro-convex unit structure and the base material, or a section with the side length of 10-50 mu m and any shape is formed between the micro-convex unit structure and the base material, wherein the shape of the section is different according to the difference of concave structures in the microstructure.
The invention also provides application of the prism structure for the adhesive film, which is used for preparing the adhesive film for the liquid crystal display, wherein the adhesive film for the liquid crystal display comprises the prism structure and a base material.
Example 1
And electroplating a nickel-phosphorus electroplating layer with the thickness of 200 mu m and the hardness of 550HB on the surface of the roller 1, wherein the nickel-phosphorus electroplating is completed by adopting the conventional operation. And (3) placing the roller subjected to electroplating in a CNC workshop, and placing the roller at the constant temperature of 22 +/-0.5 ℃ for 24 hours. Then, the roller frame was set on an ultra-precision processing machine, and after the runout value of the calibration roller was less than 5 μm, the surface thereof was subjected to a flattening treatment with a diamond cutter as shown in fig. 1 and 2. Then, replacing a diamond cutter with an arc blade and an R angle with the radius of 100 mu m, and carrying out thread cutting on the nickel-phosphorus electroplated layer on the surface of the roller, wherein the depth of spiral cutting is randomly controlled to be 2-10 mu m, and the frequency of spiral cutting is 15000 HZ; at this time, as shown in fig. 3, the nickel-phosphorus plating layer on the surface of the roll shows an inward concave structure 11, so that the adhesive film formed by transferring the prism structure replicated with the inward concave structure 11 has a function of shielding light. And replacing the diamond cutter again, wherein the shape of the cutting edge of the diamond cutter is an isosceles triangle, the angle of the vertex angle of the cutting edge is 88 degrees, and the diamond cutter is carved with concave annular grooves 12 at equal intervals on the nickel-phosphorus electroplated layer with the concave structure 11, as shown in figure 4. Uniformly coating ultraviolet light curing acrylic resin on the surface of a PET (polyethylene terephthalate) base material, then passing the base material coated with the resin through a nickel-phosphorus electroplated layer on the surface of a roller, transferring and copying a microstructure of the electroplated layer, and forming and obtaining a prism structure for a laminating film on the base material after ultraviolet light curing, wherein as shown in figure 5, a prism film layer 2 comprises a prism structure and a base material, and the prism structure is arranged on the base material; the prism structure of the prism film layer 2 includes a prism unit structure 21 and a micro-convex unit structure 22, which are outward and have a triangular cross section. The cross section of each prism unit structure 21 is an isosceles triangle with the bottom side length of 60 mu m and the height of 30 mu m, a gap with the distance of 200 mu m is arranged between the prism unit structures 21, and the prism unit structures are arranged at equal intervals; the micro-convex unit structures 22 are distributed on the gap in an uneven mode, the sizes of the micro-convex unit structures 22 are different, the heights of the micro-convex unit structures are between 2 and 5 micrometers, and circular cross sections with the diameters of 10 to 50 micrometers are formed between the micro-convex unit structures and the base material.
Example 2
Electroplating nickel-phosphorus electroplating layer with thickness of 250 μm and hardness of 570HB on the surface of the roller, placing the electroplated roller in a CNC workshop, and standing at 22 + -0.5 deg.C for 24 h. Then, the roller frame is arranged on an ultra-precision processing machine, after the runout value of the calibration roller is less than 5 mu m, the surface of the roller frame is subjected to flattening processing by a diamond cutter. And then, replacing the diamond cutter with the arc blade having the radius of 150 mu m and the R angle, and performing thread cutting on the nickel-phosphorus electroplated layer on the surface of the roller, wherein the depth of the spiral cutting is randomly controlled to be 2-10 mu m, the frequency of the spiral cutting is 17000HZ, and an inward concave structure appears on the electroplated layer. And replacing the diamond cutter again, wherein the shape of the cutting edge of the diamond cutter is an isosceles triangle, the angle of the vertex angle of the cutting edge is 89 degrees, and the diamond cutter equally-spaced carves the inwards-concave annular grooves on the electroplated layer with the inwards-concave structure. Uniformly coating ultraviolet light curing acrylic resin on the surface of a PET (polyethylene terephthalate) base material, passing the base material coated with the resin through a nickel-phosphorus electroplated layer on the surface of a roller, transferring and copying a microstructure of the electroplated layer, performing ultraviolet light curing, forming, and obtaining a prism structure for a laminating film on the base material to finally form a prism film layer. The prism structure comprises a prism unit structure and a micro-convex unit structure, wherein the prism unit structure faces outwards, and the cross section of the prism unit structure is triangular. The section of each single prism unit structure is an isosceles triangle with the bottom side length of 70 mu m and the height of 35 mu m, gaps with the interval of 210 mu m are arranged among the prism unit structures, and the prism unit structures are arranged at equal intervals; the micro-convex unit structures are distributed on the gaps, the micro-convex unit structures in the embodiment are spherical-like protrusions with different sizes, the height of each spherical-like protrusion is 2-5 mu m, and a circular section with the diameter of 10-50 mu m is formed between each spherical-like protrusion and the base material.
Example 3
Electroplating nickel-phosphorus electroplated layer with thickness of 300 μm and hardness of 580HB on the surface of the roller, placing the electroplated roller in a CNC workshop, and standing at 22 + -0.5 deg.C for 30 h. Then, the roller frame is arranged on an ultra-precision processing machine, after the runout value of the calibration roller is less than 5 mu m, the surface of the roller frame is subjected to flattening processing by a diamond cutter. And then, replacing the diamond cutter with the arc blade having the R angle with the radius of 200 mu m, and performing thread cutting on the nickel-phosphorus electroplated layer on the surface of the roller, wherein the depth of the spiral cutting is randomly controlled to be 2-10 mu m, the frequency of the spiral cutting is 20000HZ, and an inward concave structure appears on the electroplated layer. And replacing the diamond cutter again, wherein the shape of the cutting edge of the diamond cutter is an isosceles triangle, the angle of the vertex angle of the cutting edge is 90 degrees, and the diamond cutter equally-spaced carves the inwards-concave annular grooves on the electroplated layer with the inwards-concave structure. Uniformly coating ultraviolet light curing acrylic resin on the surface of a PET (polyethylene terephthalate) base material, passing the base material coated with the resin through a nickel-phosphorus electroplated layer on the surface of a roller, transferring and copying a microstructure of the electroplated layer, performing ultraviolet light curing, forming, and obtaining a prism structure for a laminating film on the base material to finally form a prism film layer. The prism structure comprises a prism unit structure and a micro-convex unit structure, wherein the prism unit structure faces outwards, and the cross section of the prism unit structure is triangular. The cross section of each single prism unit structure is an isosceles triangle with the bottom side length of 80 mu m and the height of 40 mu m, gaps with the interval of 220 mu m are formed among the prism unit structures, and the prism unit structures are arranged at equal intervals; the micro-convex unit structures are distributed on the gaps, the micro-convex unit structures in the embodiment are quasi-hemispherical protrusions with different sizes, the height of the quasi-hemispherical protrusions is 2-5 mu m, and a circular cross section with the diameter of 10-50 mu m is formed between the quasi-hemispherical protrusions and the base material.
Comparative example 1
Electroplating precision copper on the surface of a roller, and checking parameters such as defects, thickness, hardness and the like of a copper layer to obtain a copper electroplating layer with the thickness of about 250 mu m and the hardness of 570 HB; processing an inward concave annular groove on the roller frame by using a diamond cutter with an isosceles triangle cutting edge and an apex angle of 89 degrees; and after the machining is finished, unloading and installing the roller wheel on the upper surface of a sand blasting machine table, spraying aluminum oxide chips, and electroplating a chromium layer on the surface of the copper electroplating layer. And finally, uniformly coating the glue on the electroplated layer on the surface of the roller, and curing and forming to obtain the prism film layer which has a prism structure and can also form the adhesive film.
The prism film layers with the prism structures obtained in examples 1 to 3 and comparative example 1 were respectively formed into a bonding film for a liquid crystal display, and experimental tests were performed to obtain the results shown in table one.
| Item of implementation | Processing time/day | Haze degree | Service life/year of roller | Luminance of a light |
| Example 1 | 2 | 10％ | 2 | 97％ |
| Example 2 | 3 | 30％ | 2 | 98％ |
| Example 3 | 4 | 60％ | 2.5 | 97％ |
| Comparative example 1 | 8 | 80％ | 1 | 83％ |
The processing time in the table I is the time required by the manufacture of a single complete prism film layer, the time required by the processing of the prism film layer at a single time is greatly reduced, and the processing method reduces the time required by the assembly, simplifies the processing technology, does not need to electroplate a metal layer for multiple times and reduces the processing difficulty; in addition, because the processing method of the invention does not cause the resin to be remained in the microstructure on the surface of the roller, the length of the prism structure after being copied is longer, the glue for copying the prism structure is easier to demould, and simultaneously, the time and the cost for cleaning the residual resin are reduced. The prism structure obtained by the processing method of the invention has a prism unit structure and a micro-convex unit structure which are outward and have triangular sections, and the micro-convex unit structure in the prism structure can play a role of shielding and control the haze of the prism structure between 10% and 60%. The service life of the roller is the time for slipping the roller.
In the invention, the brightness of the adhesive film for the liquid crystal display is also tested, the reference film and the films to be tested in the embodiments 1 to 3 and the comparative example 1 are sequentially tested by adopting a BM7 brightness tester in a 9-point conventional mode, and the brightness is calculated by dividing the maximum brightness value of the films to be tested by the maximum brightness value of the reference film. As can be seen from the table I, the adhesive film for the liquid crystal display, which is formed by the prism structure obtained by the processing method, has small luminance loss, and can reduce the production cost and improve the processing success rate on the premise of meeting the requirements of liquid crystal display products.
Therefore, the processing method of the prism structure for the laminating film is simple to operate, the required processing time is reduced, the production cost is saved and the processing success rate is improved on the premise of ensuring that the performance of the finally obtained laminating film for the liquid crystal display is not changed.
The embodiments of the present invention are merely illustrative, and not restrictive, of the scope of the claims, and other substantially equivalent alternatives may occur to those skilled in the art and are within the scope of the present invention.
Claims (10)
1. A processing method of a prism structure for a bonding film is characterized by comprising the following steps:
electroplating nickel phosphorus on the surface of the roller, processing the nickel phosphorus electroplated layer on the surface of the roller to generate a microstructure on the nickel phosphorus electroplated layer, transferring and copying the microstructure by adopting a base material coated with glue, and finally curing to obtain the prism structure for the laminating film.
2. The method of processing a prism structure for a bonding film according to claim 1, wherein the nickel-phosphorus plating layer has a thickness of 200 to 300um and a hardness of 550 to 580 HB; before processing, the roller subjected to electroplating is placed at a constant temperature of 22 +/-0.5 ℃ for at least 24 hours.
3. The method of claim 1, wherein the step of processing the nickel-phosphorus electroplated layer on the surface of the roller comprises the steps of:
and placing the roller on an ultra-precision processing machine, calibrating the runout value of the roller to be less than 5 mu m, and sequentially carrying out thread cutting and equidistant carving on the nickel-phosphorus electroplated layer by adopting a diamond cutter so as to form a microstructure on the nickel-phosphorus electroplated layer.
4. The method for processing a prism structure for a bonding film according to claim 3, wherein the nickel-phosphorus plating layer is thread-cut by using a diamond cutter having a circular-arc blade having an R-angle with a radius of 100 to 200 μm, a depth of thread cutting is set to 2 to 10 μm, and a frequency is set to 15000 to 20000HZ, so that the nickel-phosphorus plating layer is formed in a concave structure.
5. The method for processing a prism structure for a laminating film according to claim 3, wherein concave annular grooves are engraved on the nickel-phosphorus electroplated layer at equal intervals by using a diamond cutter having an isosceles triangle blade shape, wherein the vertex angle of the diamond cutter blade is 88 to 90 degrees, and the processing depth of the diamond cutter blade is 30 to 40 μm.
6. The method of claim 1, wherein the cured prism structure for the adhesive film is obtained on the substrate, and the prism structure comprises a plurality of prism unit structures and micro-convex unit structures, and the prism unit structures and the micro-convex unit structures are arranged at intervals; the cross section of each prism unit structure is an isosceles triangle with an apex angle of 89-91 degrees, the side length of the bottom edge of the isosceles triangle is 60-80 mu m, the height of the bottom edge of the isosceles triangle is 30-40 mu m, and a gap with a distance of 200-220 mu m is formed between every two adjacent prism unit structures; the height of the micro-convex unit structure is 2-5 mu m.
7. The utility model provides a prism structure for laminating film which characterized in that, prism structure includes a plurality of prism cell structures and little protruding cell structure, prism cell structure with little protruding cell structure interval arrangement sets up.
8. The prism structure for a bonding film according to claim 7, wherein the cross section of the prism unit structure is an isosceles triangle having a vertex angle of 89 ° to 91 °, and the base side length of the isosceles triangle is 60 to 80 μm and the height is 30 to 40 μm, and a gap having a pitch of 200 to 220 μm is provided between adjacent prism unit structures.
9. The prism structure for a bonding film according to claim 7, wherein the height of the micro-convex unit structure is 2 to 5 μm.
10. Use of the prism structure for a bonding film obtained by the method for processing a prism structure for a bonding film according to any one of claims 1 to 6 or the prism structure for a bonding film according to any one of claims 7 to 9 for producing a bonding film for a liquid crystal display comprising the prism structure and a substrate.
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