CN112175536B - OCA (optically clear adhesive) optical cement with polarized light effect and manufacturing method thereof - Google Patents
OCA (optically clear adhesive) optical cement with polarized light effect and manufacturing method thereof Download PDFInfo
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- CN112175536B CN112175536B CN202011034396.3A CN202011034396A CN112175536B CN 112175536 B CN112175536 B CN 112175536B CN 202011034396 A CN202011034396 A CN 202011034396A CN 112175536 B CN112175536 B CN 112175536B
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- 239000000853 adhesive Substances 0.000 title claims abstract description 15
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 230000003287 optical effect Effects 0.000 title claims description 23
- 239000004568 cement Substances 0.000 title claims description 20
- 230000001795 light effect Effects 0.000 title claims description 17
- 239000010408 film Substances 0.000 claims abstract description 139
- 239000012788 optical film Substances 0.000 claims abstract description 62
- 238000000034 method Methods 0.000 claims abstract description 21
- 230000000694 effects Effects 0.000 claims abstract description 17
- 239000012790 adhesive layer Substances 0.000 claims abstract description 12
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 158
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 158
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims description 28
- 229910052740 iodine Inorganic materials 0.000 claims description 28
- 239000011630 iodine Substances 0.000 claims description 28
- 238000004043 dyeing Methods 0.000 claims description 19
- 239000003292 glue Substances 0.000 claims description 17
- 239000011347 resin Substances 0.000 claims description 17
- 229920005989 resin Polymers 0.000 claims description 17
- 238000001816 cooling Methods 0.000 claims description 16
- 239000012528 membrane Substances 0.000 claims description 16
- 239000000243 solution Substances 0.000 claims description 15
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 7
- 230000010287 polarization Effects 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 238000010030 laminating Methods 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 239000000741 silica gel Substances 0.000 claims description 5
- 229910002027 silica gel Inorganic materials 0.000 claims description 5
- 239000012192 staining solution Substances 0.000 claims description 5
- 239000000654 additive Substances 0.000 claims description 4
- 230000000996 additive effect Effects 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 238000010186 staining Methods 0.000 claims description 2
- 239000004973 liquid crystal related substance Substances 0.000 abstract description 12
- 239000010410 layer Substances 0.000 description 26
- 230000004888 barrier function Effects 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 235000005811 Viola adunca Nutrition 0.000 description 1
- 240000009038 Viola odorata Species 0.000 description 1
- 235000013487 Viola odorata Nutrition 0.000 description 1
- 235000002254 Viola papilionacea Nutrition 0.000 description 1
- 239000003522 acrylic cement Substances 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920002988 biodegradable polymer Polymers 0.000 description 1
- 239000004621 biodegradable polymer Substances 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/29—Laminated material
-
- 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
- G02B5/3041—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 comprising multiple thin layers, e.g. multilayer stacks
- G02B5/305—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 comprising multiple thin layers, e.g. multilayer stacks including organic materials, e.g. polymeric layers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
- C09J2203/318—Applications of adhesives in processes or use of adhesives in the form of films or foils for the production of liquid crystal displays
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2429/00—Presence of polyvinyl alcohol
- C09J2429/006—Presence of polyvinyl alcohol in the substrate
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- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Polarising Elements (AREA)
Abstract
The invention discloses OCA (optically clear adhesive) with a polarizing effect and a manufacturing method thereof, relates to the field of liquid crystal displays, and aims to solve the problems that the existing OCA in the prior art is single in component, does not have the polarizing effect, needs to be attached to a polarizer, is complex in processing process, and influences the working efficiency because the distance position between the display screen and polarized light needs to be adjusted for multiple times in the processing process of the display screen. The lower extreme face of upper OCA optical film is provided with the upper PVA film, the lower extreme face of upper PVA film is provided with the phase difference compensator plate, the lower extreme face of phase difference compensator plate is provided with lower floor's PVA film, the below of lower floor's PVA film is provided with lower floor's OCA optical film, the lower terminal surface of lower floor's OCA optical film and upper OCA optical film all is provided with the adhesive layer.
Description
Technical Field
The invention relates to the technical field of liquid crystal displays, in particular to OCA (optically clear adhesive) optical cement with a polarized light effect and a manufacturing method thereof.
Background
Liquid crystal displays, which are flat, ultra-thin display devices, consist of a certain number of color or black and white pixels placed in front of a light source or a reflective surface. Liquid crystal displays are very low power consuming and are therefore favored by engineers for use in battery-operated electronic devices. The main principle is that the current stimulates the liquid crystal molecules to generate points, lines and surfaces which are matched with the back lamp tube to form a picture. The liquid crystal panel includes a polarizing film, a glass substrate, a black matrix, a color filter, a protective film, a common electrode, an alignment layer, a liquid crystal layer (liquid crystal, spacer, sealant), a capacitor, a display electrode, a prism layer, and a light diffusion layer. The polarizing film is also called a polarizer, and the polarizer is divided into an upper polarizer and a lower polarizer, the polarization functions of the upper and lower polarizers are perpendicular to each other, and the upper and lower polarizers act like a barrier, and block the light wave component according to the requirement, for example, block the light wave component perpendicular to the barrier of the polarizer, and only allow the light wave component parallel to the barrier to pass through.
The OCA optical cement is one of the raw materials of the important touch screen. The optical acrylic adhesive is made into a double-sided adhesive tape without a base material, and then a layer of release film is respectively adhered to an upper bottom layer and a lower bottom layer. It is the best adhesive for touch screens. However, the existing OCA optical cement has single component, does not have the polarization effect, needs to be attached to a polarizer, is complicated in processing process, and influences the working efficiency because the distance position between the optical cement and the polarized light needs to be adjusted for many times in the processing process of a display screen; therefore, the market is urgently needed to develop an OCA optical cement with a polarization effect and a manufacturing method thereof to help people solve the existing problems.
Disclosure of Invention
The invention aims to provide OCA (optically clear adhesive) with a polarizing effect and a manufacturing method thereof, and aims to solve the problems that the existing OCA provided in the background art is single in component, does not have the polarizing effect, needs to be attached to a polarizer, is complicated in processing process, and influences the working efficiency because the distance position between the display screen and polarized light needs to be adjusted for multiple times in the processing process of the display screen.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a OCA optical cement with polarized light effect, includes upper OCA optical film, the below of upper OCA optical film is provided with upper PVA film, the lower terminal surface of upper PVA film is provided with the phase difference compensator, the lower terminal surface of phase difference compensator is provided with lower floor's PVA film, the below of lower floor's PVA film is provided with lower floor's OCA optical film, the lower terminal surface of lower floor's OCA optical film and upper OCA optical film all is provided with the adhesive layer.
Preferably, the up end of upper PVA film and the lower terminal surface of lower floor's PVA film all are provided with the glue film, the lower terminal surface of upper OCA optical film lower extreme bonding glue film passes through glue film bonding connection with the up end of upper PVA film, the lower terminal surface of lower floor's PVA film passes through glue film bonding connection with the up end of lower floor's OCA optical film.
Preferably, the number of the adhesive layers is two, and the two adhesive layers are respectively connected with the upper OCA optical film and the lower OCA optical film in an adhesive manner.
Preferably, the lower terminal surface of upper OCA optical film lower extreme bonding glue film and the up end of lower floor's OCA optical film all are provided with positioning groove, positioning groove is provided with four, the up end of upper PVA film and the lower terminal surface of lower floor's PVA film all are provided with the PVA lug, the PVA lug is provided with four, four the position of PVA lug is corresponding with the position of four positioning groove respectively, just positioning groove's shape is the same with the shape of PVA lug.
Preferably, the both sides of phase difference compensator all are provided with the stopper, the stopper respectively with upper PVA membrane, lower floor's PVA membrane and phase difference compensator fixed connection, just the outside of stopper is provided with the constant head tank, the constant head tank is provided with a plurality of, a plurality of the constant head tank all sets up structure as an organic whole with the stopper.
A method for manufacturing OCA optical cement with a polarized light effect comprises the following steps:
s1: introducing a polyvinyl alcohol raw material into a reaction kettle, adding an additive and water, and heating;
s2: injecting the polymerized polyvinyl alcohol into a mold to be shaped into a sheet shape, and stretching after shaping to prepare an upper PVA film and a lower PVA film;
s3: laying the upper PVA film and the lower PVA film and placing the upper PVA film and the lower PVA film in iodine dyeing solution for iodine dyeing;
s4: stretching and heating the resin film, cutting the resin film with corresponding size, and cooling to obtain the phase difference compensation sheet;
s5: fixing and stretching two ends of the phase difference compensation plate by using a clamp, so that the surface of the phase difference compensation plate is kept flat;
s6: manufacturing a limiting block with the same thickness as the phase difference compensation plate by using an injection mold, and performing hot melting fixation on two sides of the phase difference compensation plate;
s7: and adding an adhesive on the outer surfaces of the phase difference compensation pieces on the two sides, and respectively attaching and fixing the upper PVA film and the lower PVA film which are dyed by iodine to the upper end surface and the lower end surface of the phase difference compensation pieces and the limiting blocks to prepare the OCA optical cement with the polarization effect.
Preferably, in S2, the polyvinyl alcohol sheet is preheated, stretched while being cooled from the temperature after the preheating, and further stretched after cooling, and the stretched polyvinyl alcohol sheet is dried after being washed.
Preferably, in S3, the pretreated upper PVA film and the pretreated lower PVA film are dyed in three dye solution tanks, an iodine dyeing solution, a leveling agent and a dyeing assistant are added to the three dye solution tanks, respectively, and the dyed upper PVA film and the dyed lower PVA film are washed in a fourth pure water tank.
Preferably, in S4, the resin film is preheated, stretched while cooling the resin film from the temperature after preheating, further stretched after cooling, cleaned, and dried.
Preferably, in S7, in the laminating process, the positioning groove of the lower end face of the upper layer OCA optical film lower end adhesive layer is engaged with the PVA bump of the upper end face of the upper layer PVA film, the positioning groove of the upper end face of the lower layer OCA optical film is engaged with the PVA bump of the lower end face of the lower layer PVA film, flexible extrusion is performed by using a silica gel compression roller, and then the two ends of the upper layer OCA optical film, the lower layer OCA optical film, the phase difference compensation sheet, the upper layer PVA film and the lower layer PVA film are fixed and stretched by using a clamp, and the upper layer OCA optical film, the lower layer OCA optical film, the phase difference compensation sheet, the upper layer PVA film and the lower layer PVA film are cut according to requirements.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention eliminates blue-violet light and yellow-green light on a liquid crystal screen by compensating the difference of light transmission speed through the arrangement of a phase difference compensation sheet, so that the black and white display is more vivid, the upper PVA film and the lower PVA film are attached to the upper end surface and the lower end surface of the phase difference compensation sheet, the PVA is the only vinyl polymer which can be used as a carbon source and an energy source by bacteria, and belongs to a biodegradable polymer material, so that the phase difference compensation sheet can pass a certain light transmission effect through the upper PVA film and the lower PVA film after iodine dyeing, the phase difference compensation sheet has a polarization effect in the middle through the upper PVA film and the lower PVA film after the iodine dyeing, and the OCA optical films can have the polarization effect through the upper OCA optical film and the lower OCA optical film which are attached up and down, thereby being convenient to work and use, carry out liquid crystal display course of working, can tailor the OCA blooming so that carry out work as required, be convenient for operate, improve work efficiency, simple structure, convenient to use.
2. According to the invention, through the arrangement of the PVA bumps, in the processing process of the OCA optical film, the stability of the upper layer of OCA optical film and the stability of the lower layer of OCA optical film with the upper layer of PVA film and the stability of the lower layer of OCA optical film with the lower layer of PVA film can be improved through the corresponding PVA bumps and the corresponding positioning grooves, the attaching effect is improved, the same and uniform thickness and smoothness are effectively maintained, and the using effect is improved.
3. According to the invention, through the arrangement of the limiting blocks, the upper layer PVA film, the lower layer PVA film and the phase difference compensation sheet can be connected through the limiting blocks on the two sides in the processing work, so that the processing work of different degrees is facilitated, the connection stability is improved, the positioning groove on the outer side of the limiting blocks can facilitate the positioning and mounting work of the OCA optical film, and the OCA optical film has certain toughness and is convenient for long-term use.
Drawings
FIG. 1 is an exploded view of the present invention;
fig. 2 is a side view of the present invention.
In the figure: 1. an upper OCA optical film; 2. a lower OCA optical film; 3. bonding the adhesive layer; 4. an upper PVA film; 5. a lower PVA film; 6. a phase difference compensation plate; 7. a limiting block; 8. positioning a groove; 9. PVA bumps; 10. a positioning groove.
Detailed description of the invention
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-2, an embodiment of the present invention is shown: the utility model provides an OCA optical cement with polarized light effect, including upper OCA blooming 1, the below of upper OCA blooming 1 is provided with upper PVA membrane 4, the lower terminal surface of upper PVA membrane 4 is provided with phase difference compensator 6, the lower terminal surface of phase difference compensator 6 is provided with lower floor PVA membrane 5, the below of lower floor PVA membrane 5 is provided with lower floor OCA blooming 2, the lower terminal surface of lower floor OCA blooming 2 and upper OCA blooming 1 all is provided with adhesive layer 3, can make to possess the polarisation effect at OCA blooming itself through upper and lower attached upper OCA blooming 1 and lower floor OCA blooming 2, thereby can be convenient for carry out work, high durability and convenient use, carrying out liquid crystal display course of working, can tailor the OCA blooming so that work according to the demand, be convenient for operate, and improve work efficiency, moreover, the steam generator is simple structure, and high durability and convenient use.
Further, the up end of upper PVA film 4 and the lower terminal surface of lower floor PVA film 5 all are provided with the glue film, the lower terminal surface of upper OCA optical film 1 lower extreme bonding glue film 3 passes through glue film bonding connection with the up end of upper PVA film 4, the lower terminal surface of lower floor PVA film 5 passes through glue film bonding connection with the up end of lower floor OCA optical film 2, upper PVA film 4 and lower floor PVA film 5 after the accessible iodine dyeing pass through certain printing opacity effect to phase difference compensator 6, and upper PVA film 4 and lower floor PVA film 5 after the iodine dyeing make phase difference compensator 6 possess the polarisation effect in the middle of getting.
Further, bonding glue film 3 is provided with two, and two bonding glue films 3 make things convenient for the OCA blooming to connect and be attached through bonding glue film 3 with upper OCA blooming 1 and 2 adhesive connection of lower floor OCA blooming respectively, are convenient for carry out liquid crystal display processing work.
Further, the lower terminal surface of 1 lower extreme bonding glue film 3 of upper OCA blooming and the up end of lower floor OCA blooming 2 all are provided with positioning groove 10, positioning groove 10 is provided with four, the up end of upper PVA film 4 and the lower terminal surface of lower floor PVA film 5 all are provided with PVA lug 9, PVA lug 9 is provided with four, the position of four PVA lugs 9 is corresponding with the position of four positioning groove 10 respectively, and positioning groove 10's shape is the same with PVA lug 9's shape, can improve upper OCA blooming 1 and lower floor OCA blooming 2 respectively with upper PVA film 4 and lower floor PVA film 5's stability through corresponding PVA lug 9 and positioning groove 10, the laminating effect has been improved, the effectual same even thickness and the smoothness that keep, the result of use is improved.
Further, the both sides of phase difference compensator 6 all are provided with stopper 7, stopper 7 respectively with upper PVA membrane 4, lower floor's PVA membrane 5 and 6 fixed connection of phase difference compensator, and stopper 7's outside is provided with constant head tank 8, constant head tank 8 is provided with a plurality of, a plurality of constant head tank 8 all sets up structure as an organic whole with stopper 7, the OCA blooming of can being convenient for through the constant head tank 8 in the stopper 7 outside fixes a position and installation work, and can possess certain toughness, the OCA blooming of being convenient for uses for a long time.
A method for manufacturing OCA optical cement with a polarized light effect comprises the following steps:
s1: introducing a polyvinyl alcohol raw material into a reaction kettle, adding an additive and water, and heating;
s2: injecting the polymerized polyvinyl alcohol into a mold to be shaped into a sheet shape, and stretching after shaping to obtain an upper PVA film 4 and a lower PVA film 5;
s3: paving the upper PVA film 4 and the lower PVA film 5 and placing the films in an iodine dyeing solution for iodine dyeing;
s4: stretching and heating the resin film, cutting the resin film with corresponding size, and cooling to obtain a phase difference compensation sheet 6;
s5: fixing and stretching two ends of the phase difference compensation plate 6 by using a clamp, so that the surface of the phase difference compensation plate 6 is kept flat;
s6: a limiting block 7 with the same thickness as the phase difference compensation plate 6 is manufactured by using an injection mold, and the two sides of the phase difference compensation plate 6 are subjected to hot melting and fixing;
s7: add the adhesive at the 6 surfaces of phase difference compensator in both sides, upper PVA film 4 and lower floor PVA film 5 after dyeing with iodine laminate fixedly with the upper and lower terminal surface and the stopper 7 of phase difference compensator 6 respectively, make the OCA optical cement that has the polarized light effect, can make through upper OCA optical film 1 of upper and lower attached and lower floor OCA optical film 2 and possess the polarized light effect at OCA optical film itself to can be convenient for carry out work, convenient to use.
Further, in S2, the polyvinyl alcohol sheet is preheated, then stretched while cooling from temperature after the preheating, then further stretched after cooling, and the stretched polyvinyl alcohol sheet is washed and then dried, whereby stretching can be performed without generating a yield point at which the tensile stress increases sharply with respect to strain and the tensile stress decreases after the application of the maximum tensile stress, and the stretching can be performed well until the desired orientation is obtained.
Further, in S3, the pretreated upper PVA film 4 and the pretreated lower PVA film 5 are dyed in three dye solution tanks, an iodine dye, a leveling agent and a dyeing assistant are respectively added in the three dye solution tanks, the dyed upper PVA film 4 and the dyed lower PVA film 5 are washed by a fourth pure water tank, the affinity of the leveling agent for the dye is greater than that of the iodine dye for the PVA, before the iodine dye is adsorbed by the PVA, the leveling agent firstly pulls the iodine dye and then combines with the iodine dye to generate a stable aggregate, and the iodine dye must be separated from the leveling agent to be combined with the PVA, so that the migration rate and diffusion rate of the iodine dye are reduced, and the dyeing time is delayed.
Further, in S4, the resin film is preheated, stretched while cooling the resin film from the temperature after preheating, cooled, and further stretched, and the stretched resin film is cleaned and dried, whereby the resin film can be stretched without generating a yield point at which the tensile stress increases sharply with respect to the strain and decreases after the maximum tensile stress is applied, and the resin film can be stretched well until the desired orientation is obtained.
Further, in S7, in the laminating process, the positioning groove 10 of the lower end face of the lower adhesive layer 3 of the lower end of the upper OCA optical film 1 is engaged with the PVA bump 9 of the upper end face of the upper PVA film 4, the positioning groove 10 of the upper end face of the lower OCA optical film 2 is engaged with the PVA bump 9 of the lower end face of the lower PVA film 5, and flexible extrusion is performed by using a silica gel compression roller, and then the two ends of the upper OCA optical film 1, the lower OCA optical film 2, the phase difference compensation sheet 6, the upper PVA film 4 and the lower PVA film 5 are fixed and stretched by using a clamp, and are cut according to requirements.
The working principle is as follows: introducing a polyvinyl alcohol raw material into a reaction kettle, adding an additive and water for heating, preheating a polyvinyl alcohol sheet, stretching the polyvinyl alcohol sheet from the temperature cooling process after preheating, further stretching after cooling, cleaning the stretched polyvinyl alcohol sheet, drying, stretching without a yield point that the tensile stress is increased sharply relative to the strain and is reduced after the maximum tensile stress is applied, stretching well until the required orientation is obtained, dyeing the pretreated upper PVA film 4 and the lower PVA film 5 in three dye solution tanks, respectively adding an iodine dyeing solution, a leveling agent and a dyeing assistant in the three dye solution tanks, washing the dyed upper PVA film 4 and the dyed lower PVA film 5 in a fourth pure water tank, wherein the affinity of the leveling agent to the dye is greater than the affinity of the iodine dyeing solution to the PVA, before the iodine staining solution is adsorbed by PVA, the iodine staining solution is firstly pulled by a leveling agent and then combined to generate a stable aggregate, the iodine staining solution can be combined with the PVA only by separating from the leveling agent, thereby reducing the mobility and diffusion speed of the iodine staining solution, delaying the staining time, the resin film is preheated, the resin film is stretched in the process of cooling from the temperature after preheating, is further stretched after cooling, the stretched resin film is dried after cleaning, can be stretched under the condition of not generating the yield point that the tensile stress is increased sharply relative to the strain and is reduced after the maximum tensile stress is applied, can be well stretched until the required orientation is obtained, the two ends of the phase difference compensation sheet 6 are fixedly stretched by using a clamp, the surface of the phase difference compensation sheet 6 is kept smooth, a limiting block 7 with the same thickness as the phase difference compensation sheet 6 is manufactured by using an injection mould, carry out the hot melt fixedly in phase difference compensation piece 6 both sides, in the laminating process, with the positioning groove 10 of upper OCA optical film 1 lower extreme bonding glue film 3 lower extreme terminal surface with the PVA lug 9 looks block of upper PVA membrane 4 up end, with the positioning groove 10 of lower OCA optical film 2 up end and the PVA lug 9 looks block of lower PVA membrane 5 lower extreme terminal surface, and use the silica gel compression roller to carry out the flexible extrusion, reuse anchor clamps with upper OCA optical film 1, lower OCA optical film 2, phase difference compensation piece 6, the both ends of upper PVA membrane 4 and lower PVA membrane 5 are fixed and are stretched, tailor according to the demand, the silica gel compression roller can make upper OCA optical film 1, lower OCA optical film 2, phase difference compensation piece 6, adsorb each other between upper PVA membrane 4 and the lower PVA membrane 5, keep even stability.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. An OCA optical cement with polarized light effect, includes upper OCA optical film (1), its characterized in that: an upper PVA film (4) is arranged below the upper OCA optical film (1), a phase difference compensation sheet (6) is arranged on the lower end face of the upper PVA film (4), a lower PVA film (5) is arranged on the lower end face of the phase difference compensation sheet (6), a lower OCA optical film (2) is arranged below the lower PVA film (5), positioning grooves (10) are respectively arranged on the lower end faces of the lower OCA optical film (2) and the upper OCA optical film (1), PVA bumps (9) are respectively arranged on the upper end face of the upper PVA film (4) and the lower end face of the lower PVA film (5), four PVA bumps (9) are arranged on the lower end face of the upper OCA optical film (1) and the upper end face of the lower OCA optical film (2), the positions of the four PVA bumps (9) respectively correspond to the positions of the four positioning grooves (10), just the shape of positioning groove (10) is the same with the shape of PVA lug (9), the both sides of phase difference compensator (6) all are provided with stopper (7), stopper (7) respectively with upper PVA membrane (4), lower floor's PVA membrane (5) and phase difference compensator (6) fixed connection, just the outside of stopper (7) is provided with constant head tank (8), constant head tank (8) are provided with a plurality of, a plurality of constant head tank (8) all set up structure as an organic whole with stopper (7).
2. An OCA optical adhesive having a polarized light effect according to claim 1, wherein: the adhesive layer is arranged on the upper end face of the upper PVA film (4) and the lower end face of the lower PVA film (5), the lower end face of the lower adhesive layer (3) of the upper OCA optical film (1) is connected with the upper end face of the upper PVA film (4) in an adhesive mode through the adhesive layer, and the lower end face of the lower PVA film (5) is connected with the upper end face of the lower OCA optical film (2) in an adhesive mode through the adhesive layer.
3. An OCA optical adhesive having a polarized light effect according to claim 1, wherein: bonding glue film (3) are provided with two, two bonding glue film (3) are connected with upper OCA optical film (1) and lower floor OCA optical film (2) bonding respectively.
4. A method for manufacturing OCA optical cement with polarized light effect based on any one of claims 1-3, comprising the following steps:
s1: introducing a polyvinyl alcohol raw material into a reaction kettle, adding an additive and water, and heating;
s2: injecting the polymerized polyvinyl alcohol into a mold to be shaped into a sheet shape, and stretching after shaping to obtain an upper PVA film (4) and a lower PVA film (5);
s3: paving the upper PVA film (4) and the lower PVA film (5) and placing the upper PVA film and the lower PVA film in iodine staining solution for iodine staining;
s4: stretching and heating the resin film, cutting the resin film with corresponding size, and cooling to obtain the phase difference compensation sheet (6);
s5: fixing and stretching two ends of the phase difference compensation sheet (6) by using a clamp, so that the surface of the phase difference compensation sheet (6) is kept flat;
s6: a limiting block (7) with the same thickness as the phase difference compensation sheet (6) is manufactured by using an injection mold, and the two sides of the phase difference compensation sheet (6) are fixed in a hot melting mode;
s7: and (3) adding an adhesive on the outer surfaces of the phase difference compensation pieces (6) at two sides, and respectively attaching and fixing the upper PVA film (4) and the lower PVA film (5) which are dyed by iodine to the upper end surface and the lower end surface of the phase difference compensation pieces (6) and the limiting blocks (7) to prepare the OCA optical cement with the polarization effect.
5. The method for manufacturing OCA optical cement with polarized light effect as claimed in claim 4, wherein: in the step S2, the polyvinyl alcohol sheet is preheated, stretched in the process of cooling from the temperature after preheating, further stretched after cooling, cleaned and dried.
6. The method for manufacturing OCA optical cement with polarized light effect as claimed in claim 4, wherein: in the step S3, the pretreated upper PVA film (4) and the pretreated lower PVA film (5) are dyed in three dye solution tanks, an iodine dyeing solution, a leveling agent and a dyeing assistant are respectively added to the three dye solution tanks, and the dyed upper PVA film (4) and the dyed lower PVA film (5) are washed in a fourth pure water tank.
7. The method for manufacturing OCA optical cement with polarized light effect as claimed in claim 4, wherein: in S4, the resin film is preheated, stretched while being cooled from the temperature after preheating, further stretched after cooling, cleaned, and dried.
8. The method for manufacturing OCA optical cement with polarized light effect as claimed in claim 6, wherein: in S7, in the laminating process, positioning groove (10) of terminal surface under upper OCA optical film (1) lower extreme bonding glue film (3) is blocked with PVA lug (9) of upper PVA film (4) up end mutually, positioning groove (10) of lower OCA optical film (2) up end is blocked with PVA lug (9) of lower PVA film (5) down end mutually, and use the silica gel compression roller to carry out the flexible extrusion, reuse anchor clamps with upper OCA optical film (1), lower OCA optical film (2), phase difference compensating plate (6), the both ends of upper PVA film (4) and lower PVA film (5) are fixed and are stretched, tailor according to the demand.
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| CN202011034396.3A CN112175536B (en) | 2020-09-27 | 2020-09-27 | OCA (optically clear adhesive) optical cement with polarized light effect and manufacturing method thereof |
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| CN101630033A (en) * | 2009-08-07 | 2010-01-20 | 苏州达信科技电子有限公司 | Brightening optical film and manufacturing method thereof |
| CN201654399U (en) * | 2010-03-31 | 2010-11-24 | 深圳市三利谱光电科技有限公司 | A pair of polarizers for color STN-LCD with phase difference film |
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| CN209718800U (en) * | 2019-03-17 | 2019-12-03 | 温州晨辉包装材料有限公司 | A kind of colour Low Temperature Thermal sealer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20190009426A (en) * | 2014-12-30 | 2019-01-28 | 쓰리엠 이노베이티브 프로퍼티즈 컴파니 | Optical stack including reflective polarizer and compensation film |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101630033A (en) * | 2009-08-07 | 2010-01-20 | 苏州达信科技电子有限公司 | Brightening optical film and manufacturing method thereof |
| CN201654399U (en) * | 2010-03-31 | 2010-11-24 | 深圳市三利谱光电科技有限公司 | A pair of polarizers for color STN-LCD with phase difference film |
| CN206946015U (en) * | 2017-05-09 | 2018-01-30 | 深圳市盛波光电科技有限公司 | Polaroid |
| CN209718800U (en) * | 2019-03-17 | 2019-12-03 | 温州晨辉包装材料有限公司 | A kind of colour Low Temperature Thermal sealer |
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Denomination of invention: OCA optical adhesive with polarized light effect and its manufacturing method Granted publication date: 20220419 Pledgee: China Postal Savings Bank Co.,Ltd. Dongguan Dalang Branch Pledgor: DONGGUAN LEAD NEW MATERIALS SAL & TECH Co.,Ltd. Registration number: Y2024980027801 |