CN117289520B - Manufacturing method of roll-to-roll flexible electronic paper membrane - Google Patents
Manufacturing method of roll-to-roll flexible electronic paper membrane Download PDFInfo
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- CN117289520B CN117289520B CN202311586818.1A CN202311586818A CN117289520B CN 117289520 B CN117289520 B CN 117289520B CN 202311586818 A CN202311586818 A CN 202311586818A CN 117289520 B CN117289520 B CN 117289520B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 46
- 239000012528 membrane Substances 0.000 title claims abstract description 19
- 239000010410 layer Substances 0.000 claims abstract description 90
- 239000011248 coating agent Substances 0.000 claims abstract description 42
- 238000000576 coating method Methods 0.000 claims abstract description 42
- 239000000758 substrate Substances 0.000 claims abstract description 40
- 238000000034 method Methods 0.000 claims abstract description 36
- 239000000463 material Substances 0.000 claims abstract description 32
- 239000002775 capsule Substances 0.000 claims abstract description 18
- 238000005520 cutting process Methods 0.000 claims abstract description 15
- 239000012790 adhesive layer Substances 0.000 claims abstract description 13
- 230000001681 protective effect Effects 0.000 claims abstract description 6
- 241000242583 Scyphozoa Species 0.000 claims description 6
- 238000010030 laminating Methods 0.000 claims description 5
- 238000003698 laser cutting Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 239000002245 particle Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 230000003287 optical effect Effects 0.000 description 7
- 238000005507 spraying Methods 0.000 description 7
- 239000004020 conductor Substances 0.000 description 3
- 238000007641 inkjet printing Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Classifications
-
- 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
- G02F1/165—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 translational movement of particles in a fluid under the influence of an applied field
- G02F1/166—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 translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect
- G02F1/167—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 translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect by electrophoresis
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Molecular Biology (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Optical Filters (AREA)
Abstract
The invention relates to the field of electronic paper and discloses a roll-to-roll flexible electronic paper membrane manufacturing method, which comprises the steps of firstly coating, baking, exposing and developing a coiled material of a flexible substrate to manufacture a flat layer and a filter layer, coating electronic ink on the flat layer, and then sending the coated flat layer into an electronic ink oven to bake to manufacture a capsule layer; then, a coating and attaching process is adopted on the capsule layer to manufacture an adhesive layer, and a layer of protective film is attached to the adhesive layer to finish the manufacture of the roll-to-roll electronic ink master; then cutting the roll-to-roll electronic ink master into ink sub-sheets with the sizes matched with the array substrate by adopting a cutting scheme; and finally, attaching the ink sub-sheets to the array substrate by adopting an attaching process to finish the manufacture of the color electronic ink screen. The invention simultaneously manufactures the filter layer and the transparent conductive layer, thereby improving the display effect due to the reduction of film thickness and light loss, and improving the output efficiency and yield due to the simplification of redundant cutting, attaching and other processes.
Description
Technical Field
The invention relates to the technical field of electronic paper, in particular to a manufacturing method of a roll-to-roll flexible electronic paper membrane.
Background
The electronic paper membrane comprises a substrate material, display particles and a conductive layer. The substrate of the electronic paper membrane is typically made of a flexible polymeric material, such as polyamide, polyester, or the like. The material has the characteristics of light weight, softness and folding resistance, so that the electronic paper membrane can flexibly display contents. The display principle of the electronic paper membrane is to realize image display by using tiny particles. The particles are tiny capsules, and the inside of the particles is filled with charge-regulating particles with black and white colors. By adjusting the charge of these particles, the position of the particles can be changed, thus presenting different images. The e-paper membrane requires a conductive layer to control the charge of the display particles. The conductive layer material used comprises transparent conductive materials such as Indium Tin Oxide (ITO), and the like, and the material can form a uniform conductive layer on a film and has higher transparency.
The structure of the existing electronic paper membrane is shown in fig. 1, the process flow chart of the manufacturing method is shown in fig. 2, the generating scheme is roughly divided into a spraying scheme and a light filter scheme, and the specific manufacturing scheme is as follows:
1. the spraying scheme is as follows:
1) The transparent conductive layer 104 is manufactured on the substrate 105 by adopting sputtering, vapor deposition and other technical methods;
2) Coating the suspension of the electronic ink capsule and the adhesive material on the transparent conductive layer 104, and curing the material to form a capsule layer 704 by using methods such as baking, ultraviolet curing and the like;
3) The adhesive layer 705 is manufactured on the capsule layer 704 by coating, attaching and other methods;
4) The electronic ink film in the traditional sense is formed after the steps;
5) Then the electronic ink membrane is processed into electronic ink sub-sheets matched with the array substrate 801 by cutting, hole digging and other methods;
6) Attaching the manufactured electronic ink film sub-sheet to the array substrate 801 by using attaching equipment;
7) Spraying the filter materials with different colors on the other surface of the substrate 105 by using a spraying device;
8) Then, manufacturing the upper layer structure 107 on the filter coating to complete the color electronic ink screen;
2. the scheme of the optical filter is as follows:
1) The transparent conductive layer 104 is manufactured on the substrate 105 by adopting sputtering, vapor deposition and other technical methods;
2) The filter layer 703 is manufactured on the upper layer structure 107 by adopting the processes of coating, exposing, developing and the like, and then is cut;
3) Coating the suspension of the electronic ink capsule and the adhesive material on the transparent conductive layer 104, and curing the material by using methods such as baking, ultraviolet curing and the like to form a capsule layer 704;
4) The adhesive layer 705 is manufactured on the capsule layer 704 by coating, attaching and other methods;
5) The electronic ink film in the traditional sense is formed after the steps;
6) Attaching the manufactured electronic ink film sheet to the array substrate 801 by using attaching equipment;
7) And then bonding the surface of the filter layer 703 of the upper layer structure 107 with the substrate 105 to complete the color electronic ink screen.
The prior art has the defects that:
disadvantage 1: poor color effect
Because the conventional manufacturing method is to manufacture the transparent conductive material and then manufacture the optical filter, the film thickness is overlapped with the transparent conductive material, and the color effect of the product with larger film thickness is weaker.
Although the spraying scheme has advantages in thickness compared with the optical filter scheme, the sprayed patterns are irregular, break point defects often occur, and the color display effect is easily affected.
Disadvantage 2: low production efficiency
Since there are millions of pixel sites on each product, the printing scheme needs to print too many sites. The efficiency of the printing scheme is too low (no more than 10 sheets per hour are produced); the conventional filter scheme has a slightly higher efficiency than the ink-jet printing scheme, but the upper structure of the conventional filter scheme still needs a series of methods such as cutting/checking alignment and the like to attach the conventional filter scheme, so that the production efficiency is lower.
Disadvantage 3: yield is too low
Under the existing scheme, an electronic paper process is needed, namely, electronic paper and an optical filter are manufactured independently, then the electronic paper is attached to the array substrate 801, and then the alignment mark optical filter of the optical filter and the array substrate 801 are utilized for alignment and attachment. Finally, a color electronic paper display screen is obtained. The technical route is longer by applying the scheme, the manual carrying times are also high in the process, the situations of dust fall, scratch, static injury and the like are easily caused, and the yield loss is high.
Disclosure of Invention
In view of the above problems, the present invention aims to provide a method for manufacturing a roll-to-roll flexible electronic paper film, in which a filter layer and a transparent conductive layer are manufactured simultaneously, so that a layer of substrate is reduced relative to a filter scheme, light loss is reduced, and a display effect is improved, and production efficiency is greatly improved relative to a spraying scheme; and because unnecessary cutting, laminating and other processes are simplified, the output efficiency and the yield are improved. The technical proposal is as follows:
a roll-to-roll flexible electronic paper membrane manufacturing method comprises the following steps of directly manufacturing a capsule layer and an adhesive layer on a flexible substrate after a filter layer is manufactured on the flexible substrate:
step 1: arranging coiled materials of the flexible substrate on a winding and unwinding roller;
step 2: the coiled material of the flexible substrate bypasses the filter layer coating roller, and the filter layer coating is carried out through the filter layer coating opening; then, the coiled material of the flexible substrate coated with the filter layer passes through a filter layer oven to be baked, and the baked coiled material is sequentially sent into an exposure machine to be exposed and is sent into a developing tank to be developed, so that the manufacture of the filter layer is completed;
step 3: coating and baking processes are continuously carried out on the filter layer to finish the manufacture of the flat layer;
step 4: the coiled material with the manufactured flat layer and the filter layer bypasses an electronic ink coating roller, electronic ink coating is carried out on the flat layer, and then the coiled material is sent into an oven for baking, so that the manufacture of the capsule layer is completed;
step 5: coating or roll-to-roll laminating technology is adopted on the capsule layer to manufacture an adhesive layer;
step 6: and (3) attaching a layer of protective film on the adhesive layer to finish the manufacture of the roll-to-roll electronic ink jellyfish roll.
Further, the step 6 further includes:
step 7: cutting the roll-to-roll electronic ink jellyfish roll into ink sub-sheets with the size matched with the array substrate by adopting a laser cutting or die cutting scheme;
step 8: and (3) attaching the ink sub-sheets to the array substrate by adopting an attaching process to finish the manufacture of the color electronic ink screen.
Further, in the step 3, the material is protected by an overcoat between the steps of baking, exposing, developing and electronic ink coating.
Compared with the prior art, the invention has the beneficial effects that:
1) The invention makes the filter layer and the transparent conductive layer in the same layer, thereby reducing the film thickness; the thickness of the filtering layer in the prior art is 4um+, the thickness of the transparent conducting layer is 2um, and the filtering coating can be controlled within 4um, so that the loss of light is effectively reduced, and the display effect is improved;
2) Compared with the prior art, the invention reduces the manufacture of the transparent conductive layer and saves the process flow;
3) Compared with the ink-jet printing scheme, the invention improves the output efficiency from 10pcs per hour to 100+pcs per hour;
4) Compared with the scheme of the optical filter, the invention simplifies redundant cutting, attaching and other processes, improves the generating efficiency, and simultaneously avoids dust fall, scratch and static injury due to the reduction of the carrying times, thereby greatly improving the yield.
Drawings
Fig. 1 is a structural diagram of a prior art electronic paper membrane.
Fig. 2 is a process flow chart of a method for manufacturing an electronic paper membrane in the prior art.
FIG. 3 is a schematic process diagram of a method for manufacturing a roll-to-roll flexible electronic paper film according to the present invention.
FIG. 4 is a process flow diagram of a method for manufacturing a roll-to-roll flexible electronic paper membrane according to the present invention.
FIG. 5 is a block diagram of a roll-to-roll electronic ink master of the present invention.
Fig. 6 is a diagram showing the structure of the finished electronic paper film.
In the figure: 101, winding and unwinding rollers; 102-carrying a film; 104-a transparent conductive layer; 105-substrate; 107-superstructure; 201-a filter coating port; 202-a filter coating roller; 301-a filter oven; 401-an exposure machine; 402-masking plate; 501-a developing tank; 601-an electronic ink coating port; 602-an oven; 603-an electronic ink coating roller; 7-electronic paper membrane finished product; 701-a flexible substrate; 702-a planar layer; 703-a filter layer; 704-a capsule layer; 705-an adhesive layer; 706-a protective film; 801-array substrate.
Detailed Description
The invention will now be described in further detail with reference to the drawings and to specific examples. The process diagram of the roll-to-roll flexible electronic paper membrane manufacturing method is shown in fig. 3, the flow diagram is shown in fig. 4, and the specific steps are as follows:
step 1: the coiled material of the flexible substrate 701 is arranged on the winding and unwinding roller 101, and the flexible basic thickness is 25-125 um.
Step 2: the web of flexible substrate 701 is wound around the filter coating roller 202 and filter coated through the filter coating port 201. Wherein the thickness of the filter layer is 1-5um, the tension of the coating substrate is 10-100N, and the coating speed is 0.5-3m/min.
And then the coiled material of the flexible substrate 701 coated with the filter layer passes through a filter layer oven 301 to be baked, wherein the baking temperature is 50-250 ℃, the substrate running speed is 0.5-3m/min, and the substrate tension is 10-100N. The baked coiled material is sequentially sent into an exposure machine 401 for exposure, and the exposure energy is 50-500 MJ/cm. And is sent into a developing tank 501 for development, the developing speed is 0.5-3m/min, and the spraying pressure is 0.5-3kg/cm, so that the manufacture of the filter layer 703 is completed.
Step 3: the coating and baking process is continued on the filter layer 703 to complete the fabrication of the planarization layer 702.
Wherein, the material is protected by the carrier film 102 in the steps of baking, exposing, developing and subsequent electronic ink coating, the thickness of the carrier film is 50-125um, and the stripping force is 1-20gf/25mm. The carrier film is pressed and attached to the surface of the material by a film laminating wheel, and the film laminating pressure is 0.01-0.3MPa. The additional loading of the film can reduce foreign matters and bad scratch, and can release the internal stress of the coiled material.
The invention adopts the processes of coating, baking, exposing and developing, improves the output efficiency compared with the traditional ink-jet printing scheme, and can improve the original productivity by 5-10 times.
Step 4: the coiled material with the flat layer 702 and the filter layer 703 is wound around the electronic ink coating roller 603, and electronic ink coating is performed on the flat layer 702, wherein the thickness of the electronic ink layer is 20-50um, the tension of a coating substrate is 10-100N, and the coating speed is 0.5-3m/min. And then sent to oven 602 for baking to complete the manufacture of capsule layer 704. Wherein the baking temperature is 50-250deg.C, and the baking time is 10-90min.
Step 5: adhesive layer 705 is formed on capsule layer 704 using a coating or roll-to-roll bonding process. The thickness of the bonding layer is 10-100um, and the bonding pressure is 0.1-0.5MPa.
Step 6: and a protective film 706 is adhered to the adhesive layer 705 to complete the manufacture of the roll-to-roll electronic ink jellyfish roll, wherein the thickness of the protective film is 30-100um, and the adhering pressure is 0.1-0.3MPa. The electronic ink master structure is shown in fig. 5.
Step 7: and cutting the roll-to-roll electronic ink jellyfish roll into ink sub-sheets with the size matched with the array substrate 801 by adopting a laser cutting or die cutting scheme. The cutting mode can be laser cutting or punching, and the cutting precision is +/-100 um.
Step 8: and the ink sub-sheets are bonded on the array substrate 801 by adopting a bonding process, so that the manufacture of the color electronic ink screen is finished, the bonding pressure is 0.1-0.5MPa, and the bonding speed is 0.1-2m/min. The structure of the finished product of the electronic paper membrane is shown in fig. 6.
Claims (3)
1. The roll-to-roll flexible electronic paper membrane manufacturing method is characterized in that after a filter layer (703) is manufactured on a flexible substrate (701), a capsule layer (704) and an adhesive layer (705) are directly manufactured on the filter layer, and the specific steps are as follows:
step 1: a coiled material of a flexible substrate (701) is arranged on a coiling and uncoiling roller (101);
step 2: the coiled material of the flexible substrate (701) bypasses the filter layer coating roller (202), the filter layer coating is carried out through the filter layer coating opening (201), and the filter layer and the transparent conductive layer are manufactured at the same time, so that the filter layer and the transparent conductive layer are manufactured on the same layer; then, the coiled material of the flexible substrate (701) coated with the filter layer passes through a filter layer oven (301) to be baked, the baked coiled material is sequentially sent into an exposure machine (401) to be exposed and is sent into a developing tank (501) to be developed, and thus, the manufacture of the filter layer (703) is completed;
step 3: continuing the coating and baking process on the filter layer (703) to finish the manufacture of the flat layer (702);
step 4: the coiled material with the manufactured flat layer (702) and the filter layer (703) bypasses an electronic ink coating roller (603), electronic ink coating is carried out on the flat layer (702), and then the coiled material is sent into an oven (602) for baking, so that the manufacture of the capsule layer (704) is completed;
step 5: coating or roll-to-roll laminating technology is adopted on the capsule layer (704) to manufacture an adhesive layer (705);
step 6: and (3) attaching a layer of protective film (706) to the adhesive layer (705) to finish the manufacture of the roll-to-roll electronic jellyfish roll.
2. The method for manufacturing the roll-to-roll flexible electronic paper film according to claim 1, further comprising, after the step 6:
step 7: cutting the roll-to-roll electronic ink jellyfish roll into ink sub-sheets with the size matched with the array substrate (801) by adopting a laser cutting or die cutting scheme;
step 8: and (3) attaching the ink sub-sheets to the array substrate (801) by adopting an attaching process to finish the manufacture of the color electronic ink screen.
3. The method for manufacturing the roll-to-roll flexible electronic paper film according to claim 1, wherein in the step 3, the material is protected by a carrier film (102) during the steps of baking, exposing, developing and electronic ink coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311586818.1A CN117289520B (en) | 2023-11-27 | 2023-11-27 | Manufacturing method of roll-to-roll flexible electronic paper membrane |
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| CN202311586818.1A CN117289520B (en) | 2023-11-27 | 2023-11-27 | Manufacturing method of roll-to-roll flexible electronic paper membrane |
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| CN117289520A CN117289520A (en) | 2023-12-26 |
| CN117289520B true CN117289520B (en) | 2024-01-26 |
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2023
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