CN115851166B - OLED support film preparation process - Google Patents
OLED support film preparation process Download PDFInfo
- Publication number
- CN115851166B CN115851166B CN202211465371.8A CN202211465371A CN115851166B CN 115851166 B CN115851166 B CN 115851166B CN 202211465371 A CN202211465371 A CN 202211465371A CN 115851166 B CN115851166 B CN 115851166B
- Authority
- CN
- China
- Prior art keywords
- film
- support film
- oled support
- oled
- layer
- 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
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- 239000010410 layer Substances 0.000 claims abstract description 79
- 239000012790 adhesive layer Substances 0.000 claims abstract description 43
- 230000001681 protective effect Effects 0.000 claims abstract description 42
- 239000000758 substrate Substances 0.000 claims abstract description 33
- 239000007788 liquid Substances 0.000 claims abstract description 32
- 239000000853 adhesive Substances 0.000 claims abstract description 22
- 230000001070 adhesive effect Effects 0.000 claims abstract description 22
- 239000011248 coating agent Substances 0.000 claims abstract description 15
- 238000000576 coating method Methods 0.000 claims abstract description 15
- 238000001035 drying Methods 0.000 claims abstract description 9
- 238000002834 transmittance Methods 0.000 claims abstract description 7
- 239000002994 raw material Substances 0.000 claims description 26
- 238000001514 detection method Methods 0.000 claims description 24
- 238000004364 calculation method Methods 0.000 claims description 19
- 238000004519 manufacturing process Methods 0.000 claims description 17
- 238000001914 filtration Methods 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 13
- 239000011347 resin Substances 0.000 claims description 13
- 229920005989 resin Polymers 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 claims description 12
- UIHCLUNTQKBZGK-UHFFFAOYSA-N 3-methyl-2-pentanone Chemical compound CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 claims description 12
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 12
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 claims description 12
- 229930185605 Bisphenol Natural products 0.000 claims description 10
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims description 10
- 150000002500 ions Chemical class 0.000 claims description 9
- 229920000459 Nitrile rubber Polymers 0.000 claims description 8
- 239000003963 antioxidant agent Substances 0.000 claims description 8
- 230000003078 antioxidant effect Effects 0.000 claims description 8
- 239000002516 radical scavenger Substances 0.000 claims description 8
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 claims description 6
- HVVWZTWDBSEWIH-UHFFFAOYSA-N [2-(hydroxymethyl)-3-prop-2-enoyloxy-2-(prop-2-enoyloxymethyl)propyl] prop-2-enoate Chemical compound C=CC(=O)OCC(CO)(COC(=O)C=C)COC(=O)C=C HVVWZTWDBSEWIH-UHFFFAOYSA-N 0.000 claims description 6
- 125000001931 aliphatic group Chemical group 0.000 claims description 4
- 238000004458 analytical method Methods 0.000 claims description 4
- 239000006185 dispersion Substances 0.000 claims description 4
- 229920001971 elastomer Polymers 0.000 claims description 4
- 239000002904 solvent Substances 0.000 claims description 4
- 230000002950 deficient Effects 0.000 claims description 3
- 238000005452 bending Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 3
- 238000004383 yellowing Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Electroluminescent Light Sources (AREA)
Abstract
The invention discloses a preparation process of an OLED (organic light emitting diode) support film, which comprises a transparent protective film, a base film layer, a treatment layer, an adhesive layer and a blue protective film, and comprises the following steps: preparing a treatment layer liquid; covering a transparent protective film on one surface of a substrate film, coating a treatment layer liquid on the other surface of the substrate film, and drying to obtain a first semi-finished substrate with a treatment layer on the surface; preparing adhesive liquid; coating the adhesive liquid on a treatment layer of the first semi-finished substrate, baking by adopting a tunnel type baking oven, and drying to obtain a second semi-finished substrate with the adhesive layer on the surface; and covering a blue protective film on the adhesive layer of the second semi-finished substrate to obtain the OLED support film. The OLED support film prepared by the process disclosed by the invention effectively solves the problems of low transmittance, large haze, poor bending resistance and yellowing of adhesive color.
Description
Technical Field
The invention relates to the technical field of electronic products, in particular to a preparation process of an OLED support film.
Background
An OLED (Organic Light-Emitting Diode) is called an Organic Light Emitting Diode, and is a third generation display technology subsequent to CRT and LCD technologies. OLED technology has been increasingly registered in the field of display because its self-luminous performance is considered to have advantages of light weight, thinness, flexibility, high contrast, rapid response, high color gamut, wide viewing angle, low power consumption, low cost, and the like. When the OLED device is used, the flexible substrate of the flexible OLED is thin, the stiffness is insufficient, deformation is easy to occur, the service experience and the service life of the OLED device can be seriously affected, and therefore, in the actual production process, a supporting film is required to be attached to the substrate of the OLED device to play a supporting role. However, the thermal and optical requirements of the common support film cannot meet a certain transmittance, the problem of viscosity reduction of the adhesive in a high-temperature environment exists, the common support film is easy to generate obvious permanent deformation after being folded for many times, and the original flat state is difficult to return.
Therefore, there is a need to develop an OLED support film with high bending and high transmittance and good adhesion under high temperature environment to solve the above problems.
Disclosure of Invention
Based on the problems existing in the background technology, the invention provides a preparation process of an OLED support film, and the OLED support film prepared by using the process provided by the invention effectively solves the problems of low transmittance, large haze, poor bending resistance and reduced viscosity of an adhesive in a high-temperature environment.
The invention is implemented by the following technical scheme:
the preparation process of the OLED support film comprises the following steps of:
step S1, preparing a treatment layer raw material according to the following weight percentage: 20-30% of zirconia, 10-20% of 3-methyl-2-pentanone, 10-20% of aliphatic solvent, 10-20% of 1-methoxy-2-propanol, 10-20% of cyclohexanone, 10-30% of photosensitive resin and 0.5-1% of pentaerythritol triacrylate;
s2, after mixing the raw materials of the treatment layer in the step S1, dispersing for 1-3 hours by using a high-speed dispersing machine, keeping the temperature at 25-30 ℃ by using a constant-temperature water tank at the rotating speed of 800-1200r/min, filtering by using a 5-10 mu m filter screen after the dispersing is finished, and standing for 2 hours to obtain the treatment layer liquid;
step S3, covering a transparent protective film on one surface of a substrate film, coating the treatment layer liquid in the step S2 on the other surface of the substrate film, and baking by a tunnel type baking oven to obtain a first semi-finished substrate with a treatment layer on the surface;
step S4, preparing raw materials of the adhesive layer according to the following weight percentages: 38-60% of rubber, 0.5-1% of ion scavenger, 0.5-1% of antioxidant, 0.5-1% of accelerator and 38-60% of bisphenol resin;
s5, after mixing the raw materials of the adhesive layer in the step S4, dispersing for 3-5 hours by using a high-speed dispersing machine, keeping the temperature at 25-30 ℃ by using a constant-temperature water tank at the rotating speed of 800-1200r/min, and filtering by using a 5-10 mu m filter screen after the dispersing is finished to obtain adhesive liquid;
step S6, coating the adhesive liquid in the step S5 on the treatment layer of the first semi-finished substrate in the step S3, baking by adopting a tunnel type baking oven, and drying to obtain a second semi-finished substrate with the adhesive layer on the surface;
and S7, covering a blue protective film on the adhesive layer of the second semi-finished substrate in the step S6, detecting the OLED support film through an online detection device, and obtaining the OLED support film after the detection is qualified.
Further, the base film layer is any one of PET and liquid transparent PI, CPI, PEN, PA, the thickness of the base film layer is 12.5-125 mu m, and the transmittance is more than 90%.
Further, the transparent protective film is a KNQ-LD150 film manufactured by Shenzhen Keno bridge technology Co., ltd, and has a thickness of 25-125 μm.
Further, the blue protective film is a KNQ-LD90 film manufactured by Shenzhen Keno bridge technology Co., ltd, and the thickness is 25-125 μm.
Further, the thickness of the treatment layer is 5-15 μm.
Further, the adhesive layer has a thickness of 5-50 μm.
Further, in the step S1, the aliphatic solvent is methyl ether;
the photosensitive resin was CMC2200.
Further, in the step S4, the rubber is one or two of nitrile rubber 1072cgj and 1072 cgx;
the ion trapping agent is IXE-100;
the antioxidant is G200 or L1010;
the promoter is EVERRNOX-10;
the bisphenol transparent resin is one or two of E-12 (604) and E-20 (601).
Further, the tunnel type oven in the step S3 and the step S6 is divided into six sections, and the temperatures of the sections are 60 ℃, 80 ℃, 160 ℃ and 60 ℃ in sequence; the air inlet frequency of each section is 25Hz, 20Hz and 25Hz in sequence; the air exhaust frequency is 40Hz.
Further, in step S7, the OLED support film is detected by an online detection method, and the online detection device includes the following modules:
and an image acquisition module: comprises a CCD industrial camera for collecting the image of the support film;
the calculation module: carrying out gray-scale calculation treatment on the support film image acquired by the CCD industrial phase;
and an analysis control module: and comparing the threshold value of the calculation result, judging whether the OLED support film is defective, and controlling whether the production line runs.
Further, the OLED support film on-line detection device performs the following operations:
(1) The image acquisition module acquires images of the OLED support film according to a set time interval by adopting a CCD industrial camera and matched software;
(2) The calculation module performs graying calculation processing on the collected OLED support film by using a median filtering algorithm to obtain a first graying image f (x, y), wherein the pixel gray level of the first graying image f (x, y) is L, and the probability of occurrence of the ith (i E0, 2, …, L-1) gray level pixel is k i ；
(3) Entropy H of information for pixel block AxA in acquired image A And (3) performing calculation:
；
wherein, p, q is the minimum value and the maximum value of the gray value in the pixel block;
(4) The gray value dispersion alpha of the pixel block AxA in the acquired image is calculated:
；
wherein M is the number of pixels in the pixel block,for the gray value of the ith pixel, +.>Is the gray average value of the pixel block;
(5) Respectively set threshold T A And T α When calculating the information entropy H A ≤T A And alpha is less than or equal to T α And when the quality of the OLED support film is judged to be qualified, the production line works normally, and otherwise, the quality of the OLED support film is judged to be unqualified, and the control module sends an instruction to the production line controller to stop working.
The invention has the beneficial effects that:
the OLED support film prepared by the process comprises the transparent protective film, the base film layer, the treatment layer, the adhesive layer and the blue protective film, so that the OLED display screen is more transparent and has lower haze. In the preparation process, the base film layer is coated with the treatment layer, so that the tensile property of the base film can be enhanced, the bending resistance is better, and excessive deformation caused by bending times is prevented. The OLED support film adhesive disclosed by the invention has excellent viscosity at normal temperature, still keeps good viscosity in a high-temperature environment, and solves the problem of viscosity reduction of the adhesive in the high-temperature environment.
Drawings
The accompanying drawings are included to provide a further explanation of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
fig. 1 is a schematic layer structure of an OLED support film of the present invention.
Wherein, 1-transparent protective film, 2-base film layer, 3-treatment layer, 4-adhesive layer, 5-blue protective film.
Detailed Description
The technical scheme of the present invention will be further described in detail with reference to the following specific examples, but the scope of the present invention is not limited to the following examples. The specific conditions are not noted in the examples and are carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention.
Fig. 1 is a schematic layer structure diagram of an OLED support film according to the present invention, where the OLED support film includes a transparent protective film 1, a base film layer 2, a treatment layer 3, an adhesive layer 4, and a blue protective film 5.
Specifically, in the embodiment of the invention, the transparent protective film is a KNQ-LD150 film manufactured by Shenzhen Keno bridge technology Co., ltd, and the thickness is 25 μm.
Specifically, in the embodiment of the invention, the blue protective film is a KNQ-LD90 film manufactured by Shenzhen Keno bridge technology Co., ltd, and the thickness is 25 μm.
Specifically, in the embodiment of the invention, the CPI film is selected as the base film layer, the thickness of the base film layer is 75 mu m, and the transmittance is more than 90%.
Example 1
The preparation process of the OLED support film comprises a transparent protective film, a base film layer, a treatment layer, an adhesive layer and a blue protective film, wherein the thickness of each layer is 25 mu m, 75 mu m, 10 mu m, 15 mu m and 25 mu m respectively, and the preparation process of the OLED support film comprises the following steps:
step S1, preparing a treatment layer raw material according to the following weight percentage: 24% of zirconia, 15% of 3-methyl-2-pentanone, 12% of methyl ether, 15% of 1-methoxy-2-propanol, 12% of cyclohexanone, 2200.5% of CMC and 0.5% of pentaerythritol triacrylate;
s2, after mixing the raw materials of the treatment layer in the step S1, dispersing for 3 hours by using a high-speed dispersing machine, keeping the temperature at 25 ℃ by using a constant-temperature water tank at the rotating speed of 1000r/min, filtering by using an 8 mu m filter screen after dispersing, and standing for 2 hours to obtain treatment layer liquid;
step S3, covering a transparent protective film KNQ-LD150 film on one surface of a base material film CPI film, coating the treatment layer liquid in the step S2 on the other surface of the base material film CPI film, baking by adopting a tunnel type baking oven, dividing the tunnel type baking oven into six sections, wherein the temperatures of the sections are 60 ℃, 80 ℃, 160 ℃, 60 ℃, the inlet air frequencies of the sections are 25Hz, 20Hz, and 25Hz in sequence, and the exhaust air frequencies are 40Hz, so as to obtain a first semi-finished base material with a treatment layer on the surface;
step S4, preparing raw materials of the adhesive layer according to the following weight percentages: nitrile rubber 1072cgj 50.5%, ion scavenger IXE-100.5%, antioxidant G200.5%, accelerator EVERRNOX-10.5%, bisphenol resin E-12 (604) 48%;
s5, after mixing the raw materials of the adhesive layer in the step S4, dispersing for 5 hours by using a high-speed dispersing machine, keeping the temperature at 30 ℃ by using a constant-temperature water tank at the rotating speed of 1000r/min, and filtering by using an 8 mu m filter screen after the dispersing is finished to obtain adhesive liquid;
step S6, coating the adhesive liquid in the step S5 on the treatment layer of the first semi-finished substrate in the step S3, baking by adopting a tunnel type baking oven, dividing the tunnel type baking oven into six sections, wherein the temperatures of the sections are 60 ℃, 80 ℃, 160 ℃, 60 ℃, the air inlet frequencies of the sections are 25Hz, 20Hz and 25Hz in sequence, the air outlet frequencies of the sections are 40Hz, and drying to obtain a second semi-finished substrate with the adhesive layer on the surface;
and S7, covering a blue protective film KNQ-LD90 film on the adhesive layer of the second semi-finished substrate in the step S6, detecting the OLED support film by an online detection device, and obtaining the OLED support film after the detection is qualified.
Example 2
The preparation process of the OLED support film comprises a transparent protective film, a base film layer, a treatment layer, an adhesive layer and a blue protective film, wherein the thickness of each layer is 25 mu m, 75 mu m, 10 mu m, 15 mu m and 25 mu m respectively, and the preparation process of the OLED support film comprises the following steps:
step S1, preparing a treatment layer raw material according to the following weight percentage: 30% of zirconia, 10% of 3-methyl-2-pentanone, 10% of methyl ether, 12% of 1-methoxy-2-propanol, 12% of cyclohexanone, 2200 25% of CMC and 1% of pentaerythritol triacrylate;
s2, after mixing the raw materials of the treatment layer in the step S1, dispersing for 3 hours by using a high-speed dispersing machine, keeping the temperature at 25 ℃ by using a constant-temperature water tank at the rotating speed of 1000r/min, filtering by using an 8 mu m filter screen after dispersing, and standing for 2 hours to obtain treatment layer liquid;
step S3, covering a transparent protective film KNQ-LD150 film on one surface of a base material film CPI film, coating the treatment layer liquid in the step S2 on the other surface of the base material film CPI film, baking by adopting a tunnel type baking oven, dividing the tunnel type baking oven into six sections, wherein the temperatures of the sections are 60 ℃, 80 ℃, 160 ℃, 60 ℃, the inlet air frequencies of the sections are 25Hz, 20Hz, and 25Hz in sequence, and the exhaust air frequencies are 40Hz, so as to obtain a first semi-finished base material with a treatment layer on the surface;
step S4, preparing raw materials of the adhesive layer according to the following weight percentages: nitrile rubber 1072cgj 50.5%, ion scavenger IXE-100.5%, antioxidant G200.5%, accelerator EVERRNOX-10.5%, bisphenol resin E-12 (604) 48%;
s5, after mixing the raw materials of the adhesive layer in the step S4, dispersing for 5 hours by using a high-speed dispersing machine, keeping the temperature at 30 ℃ by using a constant-temperature water tank at the rotating speed of 1000r/min, and filtering by using an 8 mu m filter screen after the dispersing is finished to obtain adhesive liquid;
step S6, coating the adhesive liquid in the step S5 on the treatment layer of the first semi-finished substrate in the step S3, baking by adopting a tunnel type baking oven, dividing the tunnel type baking oven into six sections, wherein the temperatures of the sections are 60 ℃, 80 ℃, 160 ℃, 60 ℃, the air inlet frequencies of the sections are 25Hz, 20Hz and 25Hz in sequence, the air outlet frequencies of the sections are 40Hz, and drying to obtain a second semi-finished substrate with the adhesive layer on the surface;
and S7, covering a blue protective film KNQ-LD90 film on the adhesive layer of the second semi-finished substrate in the step S6, detecting the OLED support film by an online detection device, and obtaining the OLED support film after the detection is qualified.
Example 3
The preparation process of the OLED support film comprises a transparent protective film, a base film layer, a treatment layer, an adhesive layer and a blue protective film, wherein the thickness of each layer is 25 mu m, 75 mu m, 10 mu m, 15 mu m and 25 mu m respectively, and the preparation process of the OLED support film comprises the following steps:
step S1, preparing a treatment layer raw material according to the following weight percentage: 24% of zirconia, 15% of 3-methyl-2-pentanone, 12% of methyl ether, 15% of 1-methoxy-2-propanol, 12% of cyclohexanone, 2200.5% of CMC and 0.5% of pentaerythritol triacrylate;
s2, after mixing the raw materials of the treatment layer in the step S1, dispersing for 3 hours by using a high-speed dispersing machine, keeping the temperature at 25 ℃ by using a constant-temperature water tank at the rotating speed of 1000r/min, filtering by using an 8 mu m filter screen after dispersing, and standing for 2 hours to obtain treatment layer liquid;
step S3, covering a transparent protective film KNQ-LD150 film on one surface of a base material film CPI film, coating the treatment layer liquid in the step S2 on the other surface of the base material film CPI film, baking by adopting a tunnel type baking oven, dividing the tunnel type baking oven into six sections, wherein the temperatures of the sections are 60 ℃, 80 ℃, 160 ℃, 60 ℃, the inlet air frequencies of the sections are 25Hz, 20Hz, and 25Hz in sequence, and the exhaust air frequencies are 40Hz, so as to obtain a first semi-finished base material with a treatment layer on the surface;
step S4, preparing raw materials of the adhesive layer according to the following weight percentages: nitrile rubber 1072cgx 48%, ion scavenger IXE-100.5%, antioxidant G200.5%, accelerator EVERRNOX-10 1%, bisphenol resin E-20 (601) 50%;
s5, after mixing the raw materials of the adhesive layer in the step S4, dispersing for 5 hours by using a high-speed dispersing machine, keeping the temperature at 30 ℃ by using a constant-temperature water tank at the rotating speed of 1000r/min, and filtering by using an 8 mu m filter screen after the dispersing is finished to obtain adhesive liquid;
step S6, coating the adhesive liquid in the step S5 on the treatment layer of the first semi-finished substrate in the step S3, baking by adopting a tunnel type baking oven, dividing the tunnel type baking oven into six sections, wherein the temperatures of the sections are 60 ℃, 80 ℃, 160 ℃, 60 ℃, the air inlet frequencies of the sections are 25Hz, 20Hz and 25Hz in sequence, the air outlet frequencies of the sections are 40Hz, and drying to obtain a second semi-finished substrate with the adhesive layer on the surface;
and S7, covering a blue protective film KNQ-LD90 film on the adhesive layer of the second semi-finished substrate in the step S6, detecting the OLED support film by an online detection device, and obtaining the OLED support film after the detection is qualified.
Comparative example 1
The OLED support film comprises a transparent protective film, a base film layer, an adhesive layer and a blue protective film, wherein the thickness of each layer is 25 mu m, 75 mu m, 15 mu m and 25 mu m respectively, and the preparation process of the OLED support film comprises the following steps:
step S1, preparing raw materials of an adhesive layer according to the following weight percentages: nitrile rubber 1072cgj 50.5%, ion scavenger IXE-100.5%, antioxidant G200.5%, accelerator EVERRNOX-10.5%, bisphenol resin E-12 (604) 48%;
s2, after mixing the raw materials of the adhesive layer in the step S1, dispersing for 5 hours by using a high-speed dispersing machine, keeping the temperature at 30 ℃ by using a constant-temperature water tank at the rotating speed of 1000r/min, and filtering by using an 8 mu m filter screen after the dispersing is finished to obtain adhesive liquid;
step S3, covering a transparent protective film KNQ-LD150 film on one surface of a base material film CPI film, coating the adhesive liquid in the step S2 on the other surface of the base material film CPI film, baking by adopting a tunnel type baking oven, dividing the tunnel type baking oven into six sections, wherein the temperatures of the sections are 60 ℃, 80 ℃, 160 ℃, 60 ℃, the inlet air frequencies of the sections are 25Hz, 20Hz, and 25Hz in sequence, the exhaust air frequencies are 40Hz, and drying to obtain a semi-finished base material with an adhesive layer on the surface;
and S4, covering a blue protective film KNQ-LD90 film on the adhesive layer of the semi-finished substrate in the step S3, detecting the OLED support film by an online detection device, and obtaining the OLED support film after the detection is qualified.
Comparative example 2
The preparation process of the OLED support film comprises a transparent protective film, a base film layer, a treatment layer, an adhesive layer and a blue protective film, wherein the thickness of each layer is 25 mu m, 75 mu m, 10 mu m, 15 mu m and 25 mu m respectively, and the preparation process of the OLED support film comprises the following steps:
step S1, preparing a treatment layer raw material according to the following weight percentage: 24% of zirconia, 15% of 3-methyl-2-pentanone, 12% of methyl ether, 15% of 1-methoxy-2-propanol, 12% of cyclohexanone, 2200.5% of CMC and 0.5% of pentaerythritol triacrylate;
s2, after mixing the raw materials of the treatment layer in the step S1, dispersing for 3 hours by using a high-speed dispersing machine, keeping the temperature at 25 ℃ by using a constant-temperature water tank at the rotating speed of 1000r/min, filtering by using an 8 mu m filter screen after dispersing, and standing for 2 hours to obtain treatment layer liquid;
step S3, covering a transparent protective film KNQ-LD150 film on one surface of a base material film CPI film, coating the treatment layer liquid in the step S2 on the other surface of the base material film CPI film, baking by adopting a tunnel type baking oven, dividing the tunnel type baking oven into six sections, wherein the temperatures of the sections are 60 ℃, 80 ℃, 160 ℃, 60 ℃, the inlet air frequencies of the sections are 25Hz, 20Hz, and 25Hz in sequence, and the exhaust air frequencies are 40Hz, so as to obtain a first semi-finished base material with a treatment layer on the surface;
step S4, preparing raw materials of the adhesive layer according to the following weight percentages: nitrile rubber 1072cgx 30%, ion scavenger IXE-100.5%, antioxidant G200.5%, accelerator EVERRNOX-10 1%, bisphenol resin E-20 (601) 68%;
s5, after mixing the raw materials of the adhesive layer in the step S4, dispersing for 5 hours by using a high-speed dispersing machine, keeping the temperature at 30 ℃ by using a constant-temperature water tank at the rotating speed of 1000r/min, and filtering by using an 8 mu m filter screen after the dispersing is finished to obtain adhesive liquid;
step S6, coating the adhesive liquid in the step S5 on the treatment layer of the first semi-finished substrate in the step S3, baking by adopting a tunnel type baking oven, dividing the tunnel type baking oven into six sections, wherein the temperatures of the sections are 60 ℃, 80 ℃, 160 ℃, 60 ℃, the air inlet frequencies of the sections are 25Hz, 20Hz and 25Hz in sequence, the air outlet frequencies of the sections are 40Hz, and drying to obtain a second semi-finished substrate with the adhesive layer on the surface;
and S7, covering a blue protective film KNQ-LD90 film on the adhesive layer of the second semi-finished substrate in the step S4, detecting the OLED support film by an online detection device, and obtaining the OLED support film after the detection is qualified.
Test examples
The OLED support films of examples 1-3 and comparative examples 1-2 were subjected to performance testing, and the specific test results are shown in table 1.
TABLE 1
As can be seen from the results in Table 1, the OLED support films of examples 1-3 of the present invention have high transparency, low haze, high bending resistance and high temperature (100deg.C) peel strength. In the preparation process, the treatment layer is coated on the base film layer, so that the tensile strength of the base film can be enhanced, and the bending resistance is better. The OLED support film of comparative example 1 does not contain a treatment layer, and as is apparent from the data of table 1, the OLED support film of comparative example 1 has a 33.3% decrease in bending resistance, and a significant decrease in tensile value and elongation at break, as compared to example 1. The adhesive layer of the OLED support film of comparative example 2 had a reduced nitrile rubber content and an increased bisphenol resin content, and as can be seen from the data in table 1, the high temperature (100 ℃) peel strength of the OLED support film of comparative example 2 was significantly reduced as compared to examples 1 and 2, as well as the performance of the other OLED support films.
The OLED support film prepared by the preparation process provided by the invention is more transparent and has lower haze, and the problems of poor bending resistance and reduced viscosity of an adhesive in a high-temperature environment of the conventional common OLED support film are effectively solved.
In one embodiment, the OLED support film is inspected by an in-line inspection method, and the in-line inspection apparatus includes the following modules:
and an image acquisition module: comprises a CCD industrial camera for collecting the image of the support film;
the calculation module: carrying out gray-scale calculation treatment on the support film image acquired by the CCD industrial phase;
and an analysis control module: and comparing the threshold value of the calculation result, judging whether the OLED support film is defective, and controlling whether the production line runs.
The OLED support film on-line detection device performs the following operations:
(1) The image acquisition module acquires images of the OLED support film according to a set time interval by adopting a CCD industrial camera and matched software;
(2) The calculation module performs graying calculation processing on the collected OLED support film by using a median filtering algorithm to obtain a first graying image f (x, y), wherein the pixel gray level of the first graying image f (x, y) is L, and the probability of occurrence of the ith (i E0, 2, …, L-1) gray level pixel is k i ；
(3) Entropy H of information for pixel block AxA in acquired image A And (3) performing calculation:
；
wherein, p, q is the minimum value and the maximum value of the gray value in the pixel block;
(4) The gray value dispersion alpha of the pixel block AxA in the acquired image is calculated:
；
wherein M is the number of pixels in the pixel block,the gray value of the ith pixel is the gray average value of the pixel block;
(5) Respectively set threshold T A And T α When calculating the information entropy H A ≤T A And alpha is less than or equal to T α And when the quality of the OLED support film is judged to be qualified, the production line works normally, and otherwise, the quality of the OLED support film is judged to be unqualified, and the control module sends an instruction to the production line controller to stop working.
The invention has the beneficial effects that: according to the invention, the on-line detection technology based on the image technology is used for realizing the on-line detection of the quality of the OLED support film, the image acquisition module is used for acquiring the produced image of the OLED support film, and then the calculation module and the analysis module are used for judging whether the quality of the OLED support film is qualified or not. According to the method, the background in the OLED support film image is weakened by combining the local information entropy and the local gray value dispersion, so that the image quality is improved, the influence on feature extraction is reduced, the detection precision and speed are improved, and the online rapid detection of the OLED support film is realized.
Finally, it should be noted that: the above examples merely illustrate several embodiments of the present invention and are not intended to limit the invention, and any modifications, equivalent substitutions, improvements, etc. made by those skilled in the art without departing from the spirit of the present invention are intended to be included in the scope of the present invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (9)
1. The preparation process of the OLED support film is characterized by comprising a transparent protective film, a base film layer, a treatment layer, an adhesive layer and a blue protective film, and comprises the following steps of:
step S1, preparing a treatment layer raw material according to the following weight percentage: 20-30% of zirconia, 10-20% of 3-methyl-2-pentanone, 10-20% of aliphatic solvent, 10-20% of 1-methoxy-2-propanol, 10-20% of cyclohexanone, 10-30% of photosensitive resin and 0.5-1% of pentaerythritol triacrylate;
s2, after mixing the raw materials of the treatment layer in the step S1, dispersing for 1-3 hours by using a high-speed dispersing machine, keeping the temperature at 25-30 ℃ by using a constant-temperature water tank at the rotating speed of 800-1200r/min, filtering by using a 5-10 mu m filter screen after the dispersing is finished, and standing for 2 hours to obtain the treatment layer liquid;
step S3, covering a transparent protective film on one surface of a substrate film, coating the treatment layer liquid in the step S2 on the other surface of the substrate film, and baking by a tunnel type baking oven to obtain a first semi-finished substrate with a treatment layer on the surface;
step S4, preparing raw materials of the adhesive layer according to the following weight percentages: 38-60% of rubber, 0.5-1% of ion scavenger, 0.5-1% of antioxidant, 0.5-1% of accelerator and 38-60% of bisphenol resin;
s5, after mixing the raw materials of the adhesive layer in the step S4, dispersing for 3-5 hours by using a high-speed dispersing machine, keeping the temperature at 25-30 ℃ by using a constant-temperature water tank at the rotating speed of 800-1200r/min, and filtering by using a 5-10 mu m filter screen after the dispersing is finished to obtain adhesive liquid;
step S6, coating the adhesive liquid in the step S5 on the treatment layer of the first semi-finished substrate in the step S3, baking by adopting a tunnel type baking oven, and drying to obtain a second semi-finished substrate with the adhesive layer on the surface;
step S7, covering a blue protective film on the adhesive layer of the second semi-finished substrate in the step S6, detecting the OLED support film through an online detection device, and obtaining the OLED support film after the detection is qualified;
wherein, in the step S4, the rubber is one or two of nitrile rubber 1072cgj and 1072 cgx; the bisphenol transparent resin is one or two of E-12 (604) and E-20 (601);
the online detection device in step S7 includes the following modules:
and an image acquisition module: comprises a CCD industrial camera for collecting the image of the support film;
the calculation module: carrying out gray-scale calculation treatment on the support film image acquired by the CCD industrial phase;
and an analysis control module: threshold value comparison is carried out on the calculation result, whether the OLED support film is defective or not is judged, and whether the production line runs or not is controlled;
the OLED support film on-line detection device performs the following operations:
(1) The image acquisition module acquires images of the OLED support film according to a set time interval by adopting a CCD industrial camera and matched software;
(2) The calculation module performs graying calculation processing on the collected OLED support film by using a median filtering algorithm to obtain a first graying image f (x, y), wherein the pixel gray level of the first graying image f (x, y) is L, and the probability of occurrence of the ith (i E0, 2, …, L-1) gray level pixel is k i ；
(3) Entropy H of information for pixel block AxA in acquired image A And (3) performing calculation:
；
wherein, p, q is the minimum value and the maximum value of the gray value in the pixel block;
(4) The gray value dispersion alpha of the pixel block AxA in the acquired image is calculated:
；
wherein M is the number of pixels in the pixel block,for the gray value of the ith pixel, +.>Is the gray average value of the pixel block;
(5) Respectively set threshold T A And T α When calculating the information entropy H A ≤T A And alpha is less than or equal to T α And when the quality of the OLED support film is judged to be qualified, the production line works normally, and otherwise, the quality of the OLED support film is judged to be unqualified, and the control module sends an instruction to the production line controller to stop working.
2. The process for preparing the OLED support film according to claim 1, wherein the base film layer is any one of PET and liquid transparent PI, PEN, PA, the thickness of the base film layer is 12.5-125 μm, and the transmittance is more than 90%.
3. The process for preparing an OLED support film according to claim 1, wherein the transparent protective film is a KNQ-LD150 film manufactured by Shenzhen Nodek technologies Co., ltd, and has a thickness of 25-125. Mu.m.
4. The process for preparing the OLED support film according to claim 1, wherein the blue protective film is a KNQ-LD90 film manufactured by Shenzhen Nodek technologies Co., ltd, and has a thickness of 25-125. Mu.m.
5. The process for preparing an OLED support film according to claim 1, wherein the thickness of the treatment layer is 5 to 15. Mu.m.
6. The process for preparing an OLED support film according to claim 1, wherein the adhesive layer has a thickness of 5 to 50. Mu.m.
7. The OLED support film manufacturing process of claim 1, wherein the aliphatic solvent in step S1 is methyl ether.
8. The process for preparing an OLED support film according to claim 1, wherein the ion scavenger in step S4 is IXE-100.
9. The OLED support film preparation process according to claim 1, wherein the tunnel oven in step S3 and step S6 is divided into six sections, each section having a temperature of 60 ℃, 80 ℃, 160 ℃, 60 ℃ in sequence; the air inlet frequency of each section is 25Hz, 20Hz and 25Hz in sequence; the air exhaust frequency is 40Hz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211465371.8A CN115851166B (en) | 2022-11-22 | 2022-11-22 | OLED support film preparation process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211465371.8A CN115851166B (en) | 2022-11-22 | 2022-11-22 | OLED support film preparation process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115851166A CN115851166A (en) | 2023-03-28 |
| CN115851166B true CN115851166B (en) | 2023-11-28 |
Family
ID=85664863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211465371.8A Active CN115851166B (en) | 2022-11-22 | 2022-11-22 | OLED support film preparation process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115851166B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020103324A1 (en) * | 2018-11-20 | 2020-05-28 | 深圳市维图视技术有限公司 | On-line mask detection system and method |
| CN111826103A (en) * | 2019-11-06 | 2020-10-27 | 深圳科诺桥科技股份有限公司 | Transparent cover film and preparation method thereof, flexible circuit board and LED transparent screen |
| CN113850809A (en) * | 2021-12-01 | 2021-12-28 | 武汉飞恩微电子有限公司 | Method for detecting appearance defects of protective film of chip resistor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4913838B2 (en) * | 2008-04-14 | 2012-04-11 | 日東電工株式会社 | Optical display device manufacturing system and optical display device manufacturing method |
-
2022
- 2022-11-22 CN CN202211465371.8A patent/CN115851166B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020103324A1 (en) * | 2018-11-20 | 2020-05-28 | 深圳市维图视技术有限公司 | On-line mask detection system and method |
| CN111826103A (en) * | 2019-11-06 | 2020-10-27 | 深圳科诺桥科技股份有限公司 | Transparent cover film and preparation method thereof, flexible circuit board and LED transparent screen |
| CN113850809A (en) * | 2021-12-01 | 2021-12-28 | 武汉飞恩微电子有限公司 | Method for detecting appearance defects of protective film of chip resistor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115851166A (en) | 2023-03-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9120934B2 (en) | Antistatic coating composition, antistatic film coated with the same and method for manufacturing the antistatic film thereof | |
| CN109727233B (en) | LCD defect detection method | |
| CN111986159B (en) | Electrode defect detection method and device for solar cell and storage medium | |
| CN1739044A (en) | Plastic lens and method production thereof | |
| CN1476021A (en) | Composition for forming transparent conductive film, solution for forming transparent conductive film, and method for forming transparent conductive film | |
| KR20170099980A (en) | Release film | |
| CN115851166B (en) | OLED support film preparation process | |
| CN111826103A (en) | Transparent cover film and preparation method thereof, flexible circuit board and LED transparent screen | |
| CN1990524B (en) | Static resistant polyester membrane | |
| CN113562982A (en) | Protection method for TP glass before local AG | |
| CN104459842A (en) | Optical composite membrane and manufacturing method of optical composite membrane | |
| CN111394009A (en) | Low-precipitation protective film, preparation method thereof and touch screen | |
| CN112070762A (en) | Mura defect detection method and device for liquid crystal panel, storage medium and terminal | |
| CN113808104B (en) | Metal surface defect detection method and system based on blocking | |
| JP4521704B2 (en) | Release film | |
| WO2011046390A2 (en) | Plate member for touch panel and method of manufacturing the same | |
| CN1898555A (en) | Substrate inspection device | |
| CN118096736A (en) | Shell surface defect detection method for concentrator terminal production | |
| JP2009075323A (en) | Antiglare film and coating liquid for forming antiglare layer | |
| CN117611551A (en) | Display screen abnormality detection method and system based on Internet of things | |
| CN114757945B (en) | In-situ identification method and device for corrosion of metal substrate and aging of coating | |
| CN109996432A (en) | A kind of full-embedded type metallic mesh electromagnetic wave shield film and production method | |
| US20220127427A1 (en) | Method for producing polyimide film | |
| CN111826011B (en) | Modified coating for surface of transparent covering film, preparation method thereof and modified coating | |
| CN113092485A (en) | Three-proofing paint coating quality detection system and method |
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 |