CN113640910B - Polyimide hardening film with polarizing function and manufacturing process thereof - Google Patents
Polyimide hardening film with polarizing function and manufacturing process thereof Download PDFInfo
- Publication number
- CN113640910B CN113640910B CN202110784467.XA CN202110784467A CN113640910B CN 113640910 B CN113640910 B CN 113640910B CN 202110784467 A CN202110784467 A CN 202110784467A CN 113640910 B CN113640910 B CN 113640910B
- Authority
- CN
- China
- Prior art keywords
- film
- polyimide
- hardening
- stirring
- polarizing function
- 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.)
- Active
Links
- 229920001721 polyimide Polymers 0.000 title claims abstract description 86
- 239000004642 Polyimide Substances 0.000 title claims abstract description 53
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims abstract description 23
- 230000008569 process Effects 0.000 claims abstract description 22
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 66
- 238000003756 stirring Methods 0.000 claims description 38
- 239000007788 liquid Substances 0.000 claims description 25
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 claims description 24
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 claims description 18
- 239000011248 coating agent Substances 0.000 claims description 17
- 238000000576 coating method Methods 0.000 claims description 17
- 230000001681 protective effect Effects 0.000 claims description 11
- 239000000654 additive Substances 0.000 claims description 7
- 230000000996 additive effect Effects 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 7
- 238000007667 floating Methods 0.000 claims description 7
- 239000003292 glue Substances 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 210000003734 kidney Anatomy 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 abstract description 6
- 208000003464 asthenopia Diseases 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 19
- 239000004372 Polyvinyl alcohol Substances 0.000 description 14
- 229920002451 polyvinyl alcohol Polymers 0.000 description 14
- 238000000746 purification Methods 0.000 description 6
- 238000005452 bending Methods 0.000 description 4
- 238000010030 laminating Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- ILJSQTXMGCGYMG-UHFFFAOYSA-N triacetic acid Chemical compound CC(=O)CC(=O)CC(O)=O ILJSQTXMGCGYMG-UHFFFAOYSA-N 0.000 description 4
- 238000000059 patterning Methods 0.000 description 3
- 230000010287 polarization Effects 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 229920002284 Cellulose triacetate Polymers 0.000 description 2
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 230000003678 scratch resistant effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 230000003666 anti-fingerprint Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/14—Protective coatings, e.g. hard coatings
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3083—Birefringent or phase retarding elements
-
- 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
- G02F1/133528—Polarisers
-
- 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
- G02F1/13363—Birefringent elements, e.g. for optical compensation
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/868—Arrangements for polarized light emission
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Polarising Elements (AREA)
Abstract
The invention discloses a polyimide hardening film with a polarizing function and a manufacturing process thereof, and the polyimide hardening film comprises a circular polarizer and a polyimide hardening film structure, wherein the circular polarizer and polyimide hardening film structure comprises a polyimide film, a delay film and a circular polarizer, hardening layers are arranged on the upper side and the lower side of the polyimide film, pressure sensitive adhesives are arranged on the upper side and the lower side of the delay film, the pressure sensitive adhesives on the upper side of the delay film are attached to the hardening layers on the lower side of the polyimide film, and the delay film is attached to the circular polarizer through the pressure sensitive adhesives on the lower side. The invention has the characteristics of quick reflection, wide color gamut, light weight, flexibility, wide application of a curled display screen and the like, is more similar to natural light, can effectively lighten visual fatigue of people, achieves the aim of protecting eyes, has good product performance, light weight, low cost and high efficiency, can realize mass production, is innovative, has scientific and reasonable process, stable and reliable performance and has excellent optical performance.
Description
Technical Field
The invention relates to the technical field of production of industrial control electronic display screen panels, such as mobile phones, computers, liquid crystal televisions, automobile electronics, medical equipment, instruments and meters and the like, and other application scenes also comprise sunglasses, anti-dazzling goggles, optical filters of photographic equipment and light quantity controller panels, in particular to a polyimide hardening film with a polarizing function and a manufacturing process thereof.
Background
The polaroid is formed by compounding a plurality of layers of films, and the core film material PVA is responsible for polarization. The polaroid consists of a PVA film, a TAC film, a protective film, a release film and a pressure-sensitive adhesive, wherein the PVA film adsorbing the two-way absorption molecules is responsible for polarization, is a core film material of the polaroid, determines key parameters such as polarization performance, transmittance, color tone and the like of the polaroid, and supports and protects the extended PVA film. The basic structure of the polarizer includes: the most intermediate PVA (polyvinyl alcohol), two TAC (cellulose triacetate), PSA film (pressure sensitive adhesive), release film (Release film) and Protective film (Protective film). The polarizing film is formed by laminating a layer of PVA (polyvinyl acetate) on two sides of the PVA, wherein the PVA is easy to hydrolyze, and in order to protect the physical properties of the polarizing film, a layer of (TAC) film with high light transmittance, good water resistance and certain mechanical strength is compounded on two sides of the PVA for protection, so that a polarizer original plate is formed. In the production of a common TN type LCD polaroid, according to different use requirements, one side of a polaroid original plate is required to be coated with PSA with a certain thickness, and an isolating film for protecting the PSA is compounded; and the other side is respectively compounded with a protective film, a reflecting film and a semi-transparent semi-reflecting adhesive layer film according to the type of the product, thereby forming a polarizer finished product. For STN type LCD polaroid products, a phase difference film and a protective film with a certain phase difference compensation value are compounded on one side of the PSA layer according to different needs of customers according to a certain compensation angle, so that the STN type LCD polaroid products are formed, namely the basic structure and the action principle of the LCD polaroid, and the traditional structure has high cost and poor bending performance.
Currently, when LCD (liquid crystal display) or AMOLED (active organic light emitting display) displays flexible characteristics, the LCD or AMOLED often undergoes bending and folding tests, and during the test, the LCD or AMOLED often encounters: (1) The polarizer reduces its optical efficiency and (2) damages the scratch-resistant film structure. At present, the manufacturing process of the Polarizer (polaroid) comprises the steps of dyeing PVA (polyvinyl alcohol) with iodine solution, performing uniaxial extension to form polarized light, laminating and protecting PVA (polyvinyl alcohol) resin in the center by using sandwich structures on upper and lower overlapped base materials, and sequentially laminating PSA (pressure sensitive adhesive)/circular offset compensation film/PSA (pressure sensitive adhesive) on the other side of the lower base material, wherein if the anti-fingerprint/anti-glare/anti-reflection/scratch-resistant multifunctional film is laminated, the thickness of the polaroid is thicker, and can not meet the requirement of a flexible display screen. In the prior art, the polarizer is treated by steps and layering to form a multifunctional protective film, so that the thickness of the polarizer exceeds 100 mu m after the operation, and the multifunctional polarizer is used for bending and folding products, and cannot meet the bending radius operation below 5 mm. Therefore, the invention provides a polyimide hardening film with a polarizing function and a manufacturing process thereof.
Disclosure of Invention
The invention aims to provide a polyimide hardening film with a polarizing function and a manufacturing process thereof, wherein the circular polarizer and the polyimide hardening film are integrated and applied to an organic light-emitting display, so that the polyimide hardening film has the characteristics of quick reflection, wide color gamut, light weight, flexibility, wide application of a curled display screen and the like, is closer to natural light, can effectively lighten visual fatigue of people, achieves the aim of protecting healthy eyes, and has good product performance, low cost and high efficiency, and can be produced in a large scale. The polarized light optical properties are hardly changed, and peeling or floating of each laminated film does not occur in a high temperature and high humidity environment.
In order to achieve the above object, the present invention provides the following technical solutions: the utility model provides a polyimide hardening film with polarisation function, includes circular polaroid and polyimide hardening film structure, circular polaroid and polyimide hardening film structure include polyimide film, delay film and circular polaroid, both sides all are equipped with the hardening layer about the polyimide film, both sides all are equipped with pressure sensitive adhesive about the delay film, the pressure sensitive adhesive of delay film upside and the laminating of the hardening layer of polyimide film downside, the delay film passes through the pressure sensitive adhesive of downside and laminates with circular polaroid, circular polaroid is circular flexible polaroid, circular polaroid includes polarizing layer and phase compensation layer, the phase compensation layer sets up on the polarizing layer, the phase compensation layer includes light-transmitting region and shading region.
The invention also comprises a manufacturing process of the polyimide hardening film with the polarizing function, which comprises the following specific steps:
step one, preparing a group A part: adding propylene glycol methyl ether and ethyl acetate into a stirring tank, stirring, and then adding main agent methyl acrylate, stirring;
step two, preparing a group B part: pouring the ethyl acetate and the additive into a 250-500ml beaker, manually stirring, pouring into a stirring barrel tank, and stirring to obtain the hardening liquid;
step three: pouring the prepared hardening liquid into a liquid supply barrel after stirring and mixing, installing a ROKI filter element for filtering, and then curing by an oven and a UV lamp;
step four: coating a hardening liquid of a glue supply barrel on a polyimide film, and carrying out surface curing through an air-floating type non-contact heat drying oven section;
step five: after the polyimide film is discharged from the oven, UV deep curing is carried out, and finally, the polyimide film is laminated through a protective film to form a front polyimide hardening film, and a back polyimide hardening film is formed by a back process which is the same as the above process;
step six: and in a hundred-grade clean-grade dust-free workshop, bonding the coated front and back polyimide hardened films with the retarder film by using a pressure-sensitive adhesive, and finally bonding the retarder film surface with the circular polarizer.
Preferably, the whole process is carried out in a hundred-grade clean-grade dust-free workshop.
Preferably, in the first step, the ratio of propylene glycol methyl ether, ethyl acetate and methyl acrylate is 1:0.98:1, the stirring speed of propylene glycol methyl ether and ethyl acetate is 100-200rpm for 3-5 minutes, and the stirring speed of main agent methyl acrylate is 200-300rpm for 6-10 minutes.
Preferably, in the second step, the ratio of the ethyl acetate to the additive is 40:3, manually stirring for 1-3 minutes, pouring into a stirring tank, stirring for 10-20 minutes, and rotating at 200-300rpm.
Preferably, the hardening liquid in the third step is poured into a liquid supply barrel and is provided with a ROKI filter element for 1um filtration, the temperature of an oven is set to be 50-100 ℃, the curing energy of a UV lamp is set to be 500-600mj/cm, and the oxygen content of N220 minutes is started to be lower than 200 ppm.
Preferably, in the fourth step, a tamsina pulse-free pump is used to coat the polyimide film with the curing solution of the glue supply barrel by a precision ken flowmeter at a coating speed set to 8-12m/min in a slit or micro-concave coating mode.
In the technical scheme, the invention has the technical effects and advantages that:
1. the organic light-emitting display integrated by the circular polaroid and the polyimide hardened film has the characteristics of quick reflection, wide color gamut, light and thin structure, flexibility, wide application of a curled display screen and the like, and partial photons absorbed in the OLED are required to be guided to the outside so as to improve the display performance of the OLED. In the existing OLED, a linearly polarized circular polarizer is formed by combining a polarizing film with full wavelength of visible light and a compensation film with 1/4 wavelength, so that the effects of inhibiting external light reflection and improving contrast are achieved.
2. The integration of the circular polaroid and the polyimide hardened film is closer to natural light, so that the visual fatigue of people can be effectively reduced, and the purpose of health eye protection is achieved.
3. The product of the invention has good performance, 40% thickness reduction, low cost and high efficiency after being integrated with the polyimide hardening film, and can be produced in large scale, which is 40% of foreign market.
4. The invention is innovative, the technology is scientific and reasonable, the performance is stable and reliable, the polyimide has excellent optical performance, the shape is light and thin, the weight is light, the polyimide is cheap, and the polyimide with the polarizing function has the following excellent durability: the polarized light optical properties are hardly changed, and peeling or floating of each laminated film does not occur in a high temperature and high humidity environment.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.
FIG. 1 is a diagram showing the structure of a polyimide hardened film having a polarizing function according to the present invention;
FIG. 2 is a flow chart of the manufacturing process of the present invention.
Reference numerals illustrate:
1 polyimide film, 2 hardening layer, 3 pressure sensitive adhesive, 4 delay film, 5 circular polarizer.
Detailed Description
In order to make the technical scheme of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.
The invention provides a polyimide hardening film with a polarizing function as shown in fig. 1, which comprises a circular polarizer and a polyimide hardening film structure, wherein the circular polarizer and polyimide hardening film structure comprises a polyimide film 1, a retardation film 4 and a circular polarizer 5, the upper side and the lower side of the polyimide film 1 are respectively provided with a hardening layer 2, the upper side and the lower side of the retardation film 4 are respectively provided with a pressure-sensitive adhesive 3, the pressure-sensitive adhesive 3 on the upper side of the retardation film 4 is attached to the hardening layer 2 on the lower side of the polyimide film 1, and the retardation film 4 is attached to the circular polarizer 5 through the pressure-sensitive adhesive 3 on the lower side;
the circular polarizer 5 is a circular flexible polarizer, the circular polarizer 5 comprises a polarizing layer and a phase compensation layer, the phase compensation layer is arranged on the polarizing layer, and the phase compensation layer comprises a light transmission area and a light shielding area. Through intensive research and a lot of experiments, it is found that the current flexible polarizer has a large overall thickness and can be manufactured by using Roll-to-Roll technology (Roll to Roll). Specifically, the conventional prismatic polarizer needs to be subjected to ink patterning treatment on the back surface of the cover plate so as to form a black matrix, and the flexible circular polarizer and the cover plate cannot be integrated through a roll-to-roll process due to the step difference of the ink patterning treatment. The existing flexible circular polarizer adopts a flexible transparent hardening film to replace a polarizing protective layer in the flexible polarizer, for example, a flexible transparent polyimide (CPI) hardening film is used to replace a cellulose Triacetate (TAC) film in the flexible polarizer, and the flexible polarizer can be integrated with a cover plate, but still needs to form a black matrix through ink patterning treatment, so that the whole thickness is still larger, and the flexible polarizer and the cover plate cannot be integrated by using a roll-to-roll process, so that the manufacturing cost is high, and the production energy is low so that mass production cannot be realized. The round flexible polaroid has a thinner thickness, can be integrated by adopting a roll-to-roll process, is suitable for mass production, and has obviously reduced cost.
Example 1
The invention provides a manufacturing process of a polyimide hardened film with a polarizing function, which is shown in fig. 2, and comprises the following specific steps:
step one, preparing a group A part in a hundred-grade purification grade dust-free workshop: 5000g of PGMG (propylene glycol methyl ether) and 4900g of EAC (ethyl acetate) are firstly added into a stirring barrel groove, the stirring rotation speed is 100rpm for 3 minutes, and 5000g of main agent methyl acrylate is continuously added, the stirring rotation speed is 200rpm for 6 minutes;
step two, preparing a group B part in a hundred-grade purification grade dust-free workshop: 100g of EAC (ethyl acetate) and 7.5g of additive are taken, poured into a 500ml beaker, manually stirred for 1 minute, poured into a stirring barrel groove and stirred for 10 minutes, and the rotating speed is 200rpm, so that the preparation of the hardening liquid is completed;
step three: pouring the prepared hardening liquid into a liquid supply barrel after stirring and mixing, installing a ROKI filter element for 1um filtration, setting the oven temperature at 50 ℃, setting the curing energy of a UV lamp at 500mj/cm, and starting N220 minutes until the oxygen content is lower than 200 ppm.
Step four: coating a hardening liquid of a glue supply barrel on a polyimide film 1 through a precise Kidney flowmeter by using a Tacmina pulseless pump in a slit coating mode, setting the coating speed to 8m/min, and carrying out surface curing through an air-floating type non-contact type hot drying oven section;
step five: after the polyimide film is discharged from the oven, UV deep curing is carried out, and finally, the polyimide film is laminated through a protective film to form a front polyimide hardening film, and a back polyimide hardening film is formed by a back process which is the same as the above process;
step six: in a hundred-grade clean-grade dust-free workshop, the coated front and back polyimide hardened films are bonded with the retarder film 4 by the pressure-sensitive adhesive 3, and finally the retarder film 4 is bonded with the circular polarizer 5.
Example 2
The invention provides a manufacturing process of a polyimide hardened film with a polarizing function, which is shown in fig. 2, and comprises the following specific steps:
step one, preparing a group A part in a hundred-grade purification grade dust-free workshop: 5000g of PGMG (propylene glycol methyl ether) and 4900g of EAC (ethyl acetate) are firstly added into a stirring barrel groove, the stirring rotation speed is 150rpm for 4 minutes, and 5000g of main agent methyl acrylate is continuously added, the stirring rotation speed is 250rpm for 8 minutes;
step two, preparing a group B part in a hundred-grade purification grade dust-free workshop: 100g of EAC (ethyl acetate) and 7.5g of additive are taken, poured into a 500ml beaker, manually stirred for 2 minutes, poured into a stirring barrel groove and stirred for 15 minutes, and the rotating speed is 250rpm, so that the preparation of the hardening liquid is completed;
step three: pouring the prepared hardening liquid into a liquid supply barrel after stirring and mixing, installing a ROKI filter element for 1um filtration, setting the temperature of an oven at 80 ℃, setting the solidifying energy of a UV lamp at 550mj/cm, and starting N220 minutes until the oxygen content is lower than 200 ppm.
Step four: coating a hardening liquid of a glue supply barrel on a polyimide film 1 through a precise Kidney flowmeter by using a Tacmina pulseless pump in a slit coating mode, setting the coating speed to be 10m/min, and carrying out surface curing through an air-floating type non-contact type hot drying oven section;
step five: after the polyimide film is discharged from the oven, UV deep curing is carried out, and finally, the polyimide film is laminated through a protective film to form a front polyimide hardening film, and a back polyimide hardening film is formed by a back process which is the same as the above process;
step six: in a hundred-grade clean-grade dust-free workshop, the coated front and back polyimide hardened films are bonded with the retarder film 4 by the pressure-sensitive adhesive 3, and finally the retarder film 4 is bonded with the circular polarizer 5.
Example 3
The invention provides a manufacturing process of a polyimide hardened film with a polarizing function, which is shown in fig. 2, and comprises the following specific steps:
step one, preparing a group A part in a hundred-grade purification grade dust-free workshop: 5000g of PGMG (propylene glycol methyl ether) and 4900g of EAC (ethyl acetate) are firstly added into a stirring barrel groove, the stirring rotation speed is 200rpm for 5 minutes, and 5000g of main agent methyl acrylate is continuously added, the stirring rotation speed is 300rpm for 10 minutes;
step two, preparing a group B part in a hundred-grade purification grade dust-free workshop: 100g of EAC (ethyl acetate) and 7.5g of additive are taken, poured into a 500ml beaker, manually stirred for 3 minutes, poured into a stirring barrel groove and stirred for 20 minutes, and the rotating speed is 300rpm, so that the preparation of the hardening liquid is completed;
step three: pouring the prepared hardening liquid into a liquid supply barrel after stirring and mixing, installing a ROKI filter element for 1um filtration, setting the temperature of an oven at 100 ℃, setting the curing energy of a UV lamp at 600mj/cm, and starting N220 minutes until the oxygen content is lower than 200 ppm.
Step four: coating a hardening liquid of a glue supply barrel on a polyimide film 1 through a precise Kidney flowmeter by using a Tacmina pulse-free pump in a micro-concave coating mode, setting the coating speed to be 12m/min, and carrying out surface curing through an air-floating type non-contact type hot drying oven section;
step five: after the polyimide film is discharged from the oven, UV deep curing is carried out, and finally, the polyimide film is laminated through a protective film to form a front polyimide hardening film, and a back polyimide hardening film is formed by a back process which is the same as the above process;
step six: in a hundred-grade clean-grade dust-free workshop, the coated front and back polyimide hardened films are bonded with the retarder film 4 by the pressure-sensitive adhesive 3, and finally the retarder film 4 is bonded with the circular polarizer 5.
The polyimide hardening film with the polarizing function prepared by the invention has the following advantages:
while certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the invention, which is defined by the appended claims.
Claims (7)
1. A manufacturing process of a polyimide hardened film with a polarizing function is characterized in that: the method comprises the following specific steps:
step one, preparing a group A part: adding propylene glycol methyl ether and ethyl acetate into a stirring tank, stirring, and continuously adding main agent methyl acrylate, wherein the proportion of the propylene glycol methyl ether, the ethyl acetate and the methyl acrylate is 1:0.98:1, a step of;
step two, preparing a group B part: pouring the ethyl acetate and the additive into a 250-500ml beaker, manually stirring, pouring into a stirring barrel tank, and stirring to obtain the hardening liquid;
step three: pouring the prepared hardening liquid into a liquid supply barrel after stirring and mixing, installing a ROKI filter element for filtering, and then curing by an oven and a UV lamp;
step four: coating a hardening liquid of a glue supply barrel on a polyimide film (1), and carrying out surface curing through an air-floating type non-contact type hot drying oven section;
step five: after the polyimide film is discharged from the oven, UV deep curing is carried out, and finally, the polyimide film is laminated through a protective film to form a front polyimide hardening film, and a back polyimide hardening film is formed by a back process which is the same as the above process;
step six: in a hundred-grade clean-grade dust-free workshop, the coated front and back polyimide hardened films are bonded with the retarder film (4) by the pressure-sensitive adhesive (3), and finally the surface of the retarder film (4) is bonded with the circular polarizer (5).
2. The process for producing a polyimide hardened film having a polarizing function according to claim 1, wherein: the whole process is carried out in a hundred-grade clean-grade dust-free workshop.
3. The process for producing a polyimide hardened film having a polarizing function according to claim 1, wherein: the stirring speed of propylene glycol methyl ether and ethyl acetate is 100-200rpm for 3-5 minutes, and the stirring speed of main agent methyl acrylate is 200-300rpm for 6-10 minutes.
4. The process for producing a polyimide hardened film having a polarizing function according to claim 1, wherein: in the second step, the ratio of the ethyl acetate to the additive is 40:3, manually stirring for 1-3 minutes, pouring into a stirring tank, stirring for 10-20 minutes, and rotating at 200-300rpm.
5. The process for producing a polyimide hardened film having a polarizing function according to claim 1, wherein: pouring the hardening liquid into a liquid supply barrel, installing a ROKI filter element for 1um filtration, setting the temperature of an oven to be 50-100 ℃, setting the solidifying energy of a UV lamp to be 500-600mj/cm, and starting N220 minutes until the oxygen content is lower than 200 ppm.
6. The process for producing a polyimide hardened film having a polarizing function according to claim 1, wherein: in the fourth step, a Tacmina pulse-free pump is used for coating the polyimide film (1) by using a slit coating mode or a micro-concave coating mode, the coating speed is set to 8-12m/min, and the hardening liquid of the glue supply barrel is coated on the polyimide film (1) through a precise Kidney flowmeter.
7. A cured polyimide film with polarizing function produced by the process for producing a cured polyimide film with polarizing function according to any one of claims 1 to 6, characterized in that: including circular polaroid and polyimide hardening film structure, circular polaroid and polyimide hardening film structure include polyimide film (1), delay film (4) and circular polaroid (5), both sides all are equipped with stiffening layer (2) about polyimide film (1), both sides all are equipped with pressure sensitive adhesive (3) about delay film (4), pressure sensitive adhesive (3) of delay film (4) upside laminate with stiffening layer (2) of polyimide film (1) downside, delay film (4) laminate with circular polaroid (5) through pressure sensitive adhesive (3) of downside, circular polaroid (5) are circular flexible polaroid, circular polaroid (5) include polarizing layer and phase compensation layer, phase compensation layer sets up on the polarizing layer, phase compensation layer includes light transmission region and shading region.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110784467.XA CN113640910B (en) | 2021-07-12 | 2021-07-12 | Polyimide hardening film with polarizing function and manufacturing process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110784467.XA CN113640910B (en) | 2021-07-12 | 2021-07-12 | Polyimide hardening film with polarizing function and manufacturing process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113640910A CN113640910A (en) | 2021-11-12 |
| CN113640910B true CN113640910B (en) | 2024-02-02 |
Family
ID=78417140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110784467.XA Active CN113640910B (en) | 2021-07-12 | 2021-07-12 | Polyimide hardening film with polarizing function and manufacturing process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113640910B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003098667A (en) * | 1999-05-31 | 2003-04-04 | Pi R & D Co Ltd | Aliphatic polyimide composition and image forming method |
| CN107068574A (en) * | 2015-10-20 | 2017-08-18 | 台湾积体电路制造股份有限公司 | Semiconductor devices and method |
| CN108363135A (en) * | 2018-04-19 | 2018-08-03 | 京东方科技集团股份有限公司 | Flexible polaroid and production method, display device |
| CN207908730U (en) * | 2018-03-27 | 2018-09-25 | 信利半导体有限公司 | A kind of circular polarization composite membrane and OLED display |
| CN110358124A (en) * | 2019-07-22 | 2019-10-22 | 新恒东薄膜材料（常州）有限公司 | A kind of preparation method of lower shrinkage high-hardness, wearable clear polyimides cured film |
| CN110491291A (en) * | 2019-08-14 | 2019-11-22 | 新纶科技（常州）有限公司 | A kind of flexible display screen cover board |
| WO2020004293A1 (en) * | 2018-06-25 | 2020-01-02 | 大日本印刷株式会社 | Polyimide film, polyimide material, layered body, member for display, touch panel member, liquid crystal display device, and organic electroluminescent display device |
| CN110896094A (en) * | 2018-09-12 | 2020-03-20 | 三星显示有限公司 | Flexible window and flexible display device including the same |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200420616A (en) * | 2003-01-10 | 2004-10-16 | Nitto Denko Corp | Polyimide film and process for producing the same |
| JP4530256B2 (en) * | 2004-01-19 | 2010-08-25 | 日東電工株式会社 | Retardation film, method for producing the same, and optical film using the same |
-
2021
- 2021-07-12 CN CN202110784467.XA patent/CN113640910B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003098667A (en) * | 1999-05-31 | 2003-04-04 | Pi R & D Co Ltd | Aliphatic polyimide composition and image forming method |
| CN107068574A (en) * | 2015-10-20 | 2017-08-18 | 台湾积体电路制造股份有限公司 | Semiconductor devices and method |
| CN207908730U (en) * | 2018-03-27 | 2018-09-25 | 信利半导体有限公司 | A kind of circular polarization composite membrane and OLED display |
| CN108363135A (en) * | 2018-04-19 | 2018-08-03 | 京东方科技集团股份有限公司 | Flexible polaroid and production method, display device |
| WO2020004293A1 (en) * | 2018-06-25 | 2020-01-02 | 大日本印刷株式会社 | Polyimide film, polyimide material, layered body, member for display, touch panel member, liquid crystal display device, and organic electroluminescent display device |
| CN110896094A (en) * | 2018-09-12 | 2020-03-20 | 三星显示有限公司 | Flexible window and flexible display device including the same |
| CN110358124A (en) * | 2019-07-22 | 2019-10-22 | 新恒东薄膜材料（常州）有限公司 | A kind of preparation method of lower shrinkage high-hardness, wearable clear polyimides cured film |
| CN110491291A (en) * | 2019-08-14 | 2019-11-22 | 新纶科技（常州）有限公司 | A kind of flexible display screen cover board |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113640910A (en) | 2021-11-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104170525B (en) | There is the organic EL display element of optical laminate | |
| JP3526830B2 (en) | Wide viewing angle polarizing plate and liquid crystal display device | |
| CN101697048B (en) | Polarizers for use with liquid crystal displays | |
| CN103649256B (en) | There is linear polarization and eliminate the two-side transparent bonding sheet of function | |
| CN106199812A (en) | A kind of thinning functional polarizing sheet and its preparation method and application | |
| CN107664787A (en) | Optical laminate | |
| CN108885362A (en) | dimming device | |
| CN109073809A (en) | Optics laminate structure and the head-up display system and optical reflection film for using the optics laminate structure | |
| CN105122099A (en) | Polarization plate set and liquid crystal display panel integrated with front plate | |
| KR101685252B1 (en) | Polarizing plate and display device comprising the same | |
| CN105637393A (en) | Polarizing plate set and front-plate-integrating liquid-crystal display panel | |
| CN110187426B (en) | Ultrathin wide-wave-range circular polarizing plate and application thereof | |
| KR20130074665A (en) | Polarizing plate and liquid crystal display comprising the same | |
| CN113614592B (en) | Circular polarizing plate for anti-reflection and image display device using the same | |
| JP2013218106A (en) | Polarizer, method for producing the same, polarizing plate, optical film and image display device | |
| WO2011157037A1 (en) | Polarizing plate for liquid crystal screen | |
| CN109782385A (en) | Polaroid and preparation method thereof, display panel, display device | |
| KR101512577B1 (en) | Display panel with single substrate and fabricating method thereof | |
| JP2003050313A (en) | Polarizing plate and liquid crystal display element | |
| CN108780175A (en) | Polarizing film with optical compensating layer and the organic EL panel for having used the polarizing film | |
| CN108780174A (en) | Polarizing film with optical compensating layer and the organic EL panel for having used the polarizing film | |
| CN113640910B (en) | Polyimide hardening film with polarizing function and manufacturing process thereof | |
| JP6508169B2 (en) | Optical laminate for front of in-cell touch panel liquid crystal element, in-cell touch panel liquid crystal display device, and method of manufacturing them | |
| JP2013231815A (en) | Polarizing plate, front plate for display body, and display body | |
| JPH0531122B2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |