CN111634096B - Strippable optical film - Google Patents

Strippable optical film Download PDF

Info

Publication number
CN111634096B
CN111634096B CN202010530602.3A CN202010530602A CN111634096B CN 111634096 B CN111634096 B CN 111634096B CN 202010530602 A CN202010530602 A CN 202010530602A CN 111634096 B CN111634096 B CN 111634096B
Authority
CN
China
Prior art keywords
layer
light
prism
resin layer
optical film
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
Application number
CN202010530602.3A
Other languages
Chinese (zh)
Other versions
CN111634096A (en
Inventor
丁清华
顾亮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzhou Longqiao Photoelectric Co ltd
Original Assignee
Suzhou Longqiao Photoelectric Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Suzhou Longqiao Photoelectric Co ltd filed Critical Suzhou Longqiao Photoelectric Co ltd
Priority to CN202010530602.3A priority Critical patent/CN111634096B/en
Publication of CN111634096A publication Critical patent/CN111634096A/en
Application granted granted Critical
Publication of CN111634096B publication Critical patent/CN111634096B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • B32B7/023—Optical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/06—Interconnection of layers permitting easy separation

Abstract

The invention discloses a peelable optical film which comprises a first base material layer and a prism layer arranged on the upper surface of the first base material layer; the upper surface of the prism layer forms a first photovoltaic structure; the upper surface of the prism layer is coated with a light-cured resin layer; the lower surface of the light-cured resin layer is provided with a second relief structure matched with the first relief structure; the light-cured resin layer can be peeled from the prism layer after being cured, and a film structure with an optical function is formed. The invention can protect the optical film, avoid the damage or pollution of the optical film, and can obtain two film structures with optical functions by stripping, thereby saving production resources.

Description

Strippable optical film
Technical Field
The invention relates to the technical field of optics, in particular to a strippable optical film.
Background
With the rapid development of science and technology, liquid crystal display screens are increasingly applied to various electronic products. The optical film is widely applied to various electronic products as an optical component in a liquid crystal display screen. The optical film has high requirements on the surface of the film, so that the surface of the optical film is prevented from being damaged or polluted before the optical film is used. In order to prevent the surface of the optical film from being damaged, a protective film is coated on the optical film in the prior art to protect the surface of the optical film from being damaged or contaminated. When the optical film is used, the protective film is torn. After the protective film is torn, secondary utilization can not be carried out, and waste of production resources is caused.
Disclosure of Invention
In view of the above technical problems, the present invention aims to: the strippable optical film can protect the optical film, avoid damage or pollution of the optical film, obtain two film structures with optical functions in a stripping mode and save production resources.
The technical solution of the invention is realized as follows: a peelable optical film includes a first substrate layer and a prism layer disposed on an upper surface of the first substrate layer; a first photovoltaic structure is formed on the upper surface of the prism layer; the upper surface of the prism layer is coated with a light-cured resin layer; the lower surface of the light-cured resin layer is provided with a second relief structure matched with the first relief structure; the light-cured resin layer can be peeled from the prism layer after being cured, and a film structure with an optical function is formed;
the prism layer comprises the following components in parts by weight: 20-40 parts of polyester acrylate, 5-15 parts of organic silicon polyurethane acrylate, 20-40 parts of high-refractive index single-functional group monomer, 15-25 parts of high-refractive index multi-functional group monomer, 5-10 parts of multi-functional group monomer, 0.3-10.5 parts of leveling auxiliary agent and 2-5 parts of photoinitiator;
the light-cured resin layer comprises the following components in parts by weight: 5 to 10 portions of polyester acrylate, 30 to 60 portions of high-refractive index monofunctional monomer, 30 to 50 portions of high-refractive index polyfunctional monomer, 0.3 to 10.5 portions of leveling auxiliary agent and 2 to 5 portions of photoinitiator.
Further, the prism layer comprises a plurality of triangular prism strips which are arranged in parallel.
Furthermore, the cross section of the triangular prism strip is an isosceles triangle.
Further, the minimum distance between the light-cured resin layer and the prism layer is 10 um-300 um.
Furthermore, a second substrate layer is arranged on the upper surface of the light-cured resin layer.
Furthermore, a back coating layer is arranged on the upper surface of the second base material layer.
Further, the bottom surface of the first substrate layer and/or the upper surface of the light-cured resin layer are/is provided with a back coating layer.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: the optical film can be effectively protected by matching the photocuring resin layer, and the damage or pollution of the prism layer can be avoided. In addition, the light-cured resin layer can be peeled off from the prism layer, and the light-cured resin layer is provided with the second undulating structure matched with the first undulating structure of the prism layer, so that the light-cured resin layer also has the optical function, the peeled optical film can form two film structures with the optical function, the light-cured resin layer can be reused after being peeled off, and the production resources are effectively saved.
Drawings
The technical scheme of the invention is further explained by combining the drawings as follows:
FIG. 1 is a schematic structural diagram according to a first embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a second embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a third embodiment of the present invention;
FIG. 4 is a schematic view of the structure of FIG. 3 with the addition of a back coating;
wherein: 1. a first base material layer; 2. a prism layer; 3. a light-curing resin layer; 4. back coating; 5. and a second substrate layer.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the present invention more comprehensible to those skilled in the art, and will thus provide a clear and concise definition of the scope of the present invention.
The first embodiment is as follows:
referring to fig. 1, a peelable optical film according to the present invention includes a first substrate layer 1 and a prism layer 2 formed on an upper surface of the first substrate layer 1. The material of the first base material layer is PET. The thickness of the first substrate layer is preferably 23um to 250um. The raw material for forming the prism layer 2 is UV glue. After processing, the upper surface of the prism layer 2 forms a first corrugated structure. The first substrate layer 1 and the prism layer 2 described above are each obtained by a conventional process in the art. For example, the first photovoltaic structure is formed by coating a UV paste on the first substrate layer 1, transferring the first photovoltaic structure on the microstructure roll to the coated UV paste by transfer of the microstructure roll, and photocuring to form the prism layer 2 having the first photovoltaic structure. The prism layer 2 has a light-condensing effect by the first relief structure.
After the prism layer 2 is cured, a light-curing resin layer 3 is coated on the upper surface of the prism layer 2 by the conventional processing technique. The raw material for forming the light-curing resin layer 3 is UV glue. The UV glue is filled into the first relief structure, and after light curing, a second relief structure matched with the first relief structure is formed on the lower surface of the light-curing resin layer 3.
This photocuring resin layer 3 coating can play the effect of protection prism layer 2 on prism layer 2, effectively avoids the damage or the pollution on prism layer. The cured photocurable resin layer 3 can be peeled off from the prism layer 2 and a film structure having an optical function is formed. After the light-cured resin layer 3 is peeled off, the light-cured resin layer 3 also has a light-gathering optical function because the light-cured resin layer 3 is provided with the second relief structure matched with the first relief structure of the prism layer 2, so that the peeled optical film can form two film structures with the optical functions. One of the film structures is a film structure formed by the first base material layer 1 and the prism layer 2, and the other film structure is a film structure formed by the light-curing resin layer 3.
In this embodiment, the raw material composition of the prism layer 2 is different from that of the photocurable resin layer 3, so that the photocurable resin layer 3 can be peeled off from the prism layer 2.
The prism layer 2 comprises the following components in parts by weight: 20 to 40 parts of polyester acrylate, 5 to 15 parts of organic silicon polyurethane acrylate, 20 to 40 parts of high-refractive-index single-functional-group monomer, 15 to 25 parts of high-refractive-index multi-functional-group monomer, 5 to 10 parts of multi-functional-group monomer, 0.3 to 10.5 parts of leveling auxiliary agent and 2 to 5 parts of photoinitiator.
The light-cured resin layer 3 comprises the following components in parts by weight: 5 to 10 portions of polyester acrylate, 30 to 60 portions of high-refractive index monofunctional monomer, 30 to 50 portions of high-refractive index polyfunctional monomer, 0.3 to 10.5 portions of leveling auxiliary agent and 2 to 5 portions of photoinitiator.
The refractive index of the high refractive index monofunctional monomer and the high refractive index multifunctional monomer is higher than that of a general monofunctional monomer and multifunctional monomer. The refractive index of the high refractive index monofunctional monomer and the high refractive index multifunctional monomer is 1.5 or more, and the refractive index of the general monofunctional monomer and multifunctional monomer is 1.4 to 1.5, that is, in the above components, 5 to 10 parts of the multi-functional monomer is a general multi-functional monomer, and the refractive index is 1.4 to 1.5.
The raw material components of the prism layer 2 and the raw material components of the light-curing resin layer 3 are matched for use, so that the light-curing resin layer 3 can have a good stripping effect and an optical function, and a first undulation structure on the prism layer 2 and a second undulation structure on the light-curing resin layer 3 cannot be damaged during stripping.
It should be noted that the photocurable resin layer 3 can be peeled off from the prism layer 2 well, and the effects of the present embodiment can be achieved mainly by the action provided by the silicone urethane acrylate material in the prism layer 2 and the influence of the exposure conditions, and the specific values of the raw material components of the photocurable resin layer 3 and the raw material components of the prism layer 2 are within the ranges described above. Specific numerical values of the raw material components of the photocurable resin layer 3 and the raw material components of the prism layer 2 are determined according to an actual processing technology, and are not described in detail.
The results of the comparative test in which the photocurable resin layer 3 was peeled off from the prism layer 2 were as follows:
comparative test A raw material composition of the prism layer 2 contains organosilicone urethane acrylate
Figure GDA0003775617020000051
From the above test data, it is understood that the photocurable resin layer 3 of the present example has an excellent peeling effect when the exposure dose of the photocurable resin layer 3 is constant at 1000mJ/cm2 and the exposure dose of the prism layer 2 is 1500mJ/cm 2.
Comparative test B preliminary removal of the Silicone polyurethane acrylate from the raw Material composition of prism layer 2
Figure GDA0003775617020000052
From the above test data, it is found that when the silicone urethane acrylate is not contained in the raw material components of the prism layer 2, none of the photocurable resin layer 3 is peeled off from the prism layer 2.
It can be seen from the combination of test a and test B that the photocurable resin layer 3 can be well peeled off from the prism layer 2, mainly due to the effect provided by the silicone urethane acrylate material in the prism layer 2 and the influence of the exposure conditions. The raw material components of the prism layer 2 and the raw material components of the light-cured resin layer 3 are matched for use, and through reasonable exposure conditions, the light-cured resin layer 3 can have a good stripping effect and also has an optical function, and a first photovoltaic structure on the prism layer 2 and a second photovoltaic structure on the light-cured resin layer 3 cannot be damaged during stripping.
In this embodiment, in order to allow the light-curing resin layer 3 to have both the optical function and the protective function, the minimum distance H between the light-curing resin layer 3 and the prism layer 2 is preferably 10 to 300um.
The prism layer 2 of the present embodiment includes a plurality of triangular prism strips arranged in parallel, and the first photovoltaic structure is formed by the plurality of triangular prism strips. The first photovoltaic structure has an optical function of concentrating light. After the light-cured resin layer 3 is coated on the prism layer 2, the lower surface of the light-cured resin layer 3 also forms a triangular prism strip structure, and then a second undulating structure is formed. The second relief structure has an optical function of condensing light. The cross section of the triangular prism strip is preferably an isosceles triangle.
The embodiment can effectively protect the optical film and avoid the damage or pollution of the prism layer 2 by the matching use of the light-cured resin layer 3. In addition, the light-cured resin layer 3 can be peeled off from the prism layer 2, so that the peeled optical film can form two film structures with optical functions, and the light-cured resin layer 3 can be reused after being peeled off, thereby effectively saving production resources.
The second embodiment:
based on the first embodiment, a back coating layer is added on the bottom surface of the first substrate layer 1 and/or the upper surface of the light-curing resin layer 3 according to practical application requirements. The back coating layer is used for improving the overall shielding performance of the optical film, covering defects and providing some optical diffusion function.
Example three:
based on the first embodiment, a second substrate layer 5 is formed on the upper surface of the light-curing resin layer 3 by a process in the prior art. The second substrate layer 5 is made of the same material as the first substrate layer 1 and is made of PET. The thickness of the second substrate layer 5 is 23um-250um. According to the actual application needs. The back coat layer 4 may be coated on the upper surface of the second substrate layer 5 and/or the bottom surface of the first substrate layer 1. The back coating 4 serves to improve the overall hiding of the optical film, to mask defects and to provide some optical diffusion function.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (7)

1. A peelable optical film includes a first substrate layer and a prism layer disposed on an upper surface of the first substrate layer; a first photovoltaic structure is formed on the upper surface of the prism layer; the method is characterized in that: the upper surface of the prism layer is coated with a light-cured resin layer; the lower surface of the light-cured resin layer is provided with a second undulating structure matched with the first undulating structure; the light-cured resin layer can be peeled off from the prism layer after being cured, and a film structure with an optical function is formed;
the prism layer comprises the following components in parts by weight: 20-40 parts of polyester acrylate, 5-15 parts of organic silicon polyurethane acrylate, 20-40 parts of high-refractive index single-functional group monomer, 15-25 parts of high-refractive index multi-functional group monomer, 5-10 parts of multi-functional group monomer, 0.3-10.5 parts of leveling auxiliary agent and 2-5 parts of photoinitiator;
the light-cured resin layer comprises the following components in parts by weight: 5 to 10 portions of polyester acrylate, 30 to 60 portions of high-refractive index monofunctional monomer, 30 to 50 portions of high-refractive index polyfunctional monomer, 0.3 to 10.5 portions of leveling auxiliary agent and 2 to 5 portions of photoinitiator.
2. A releasable optical film according to claim 1, wherein: the prism layer comprises a plurality of triangular prism strips which are arranged in parallel.
3. A releasable optical film according to claim 2, wherein: the cross section of the triangular prism strip is an isosceles triangle.
4. A releasable optical film according to claim 1, wherein: the minimum distance between the light-cured resin layer and the prism layer is 10-300 um.
5. A releasable optical film according to claim 1, wherein: and a second base material layer is arranged on the upper surface of the light-cured resin layer.
6. The releasable optical film of claim 5, wherein: and the upper surface of the second base material layer is provided with a back coating.
7. A releasable optical film according to claim 1, wherein: and the back coating layer is arranged on the bottom surface of the first base material layer and/or the upper surface of the light-cured resin layer.
CN202010530602.3A 2020-06-11 2020-06-11 Strippable optical film Active CN111634096B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010530602.3A CN111634096B (en) 2020-06-11 2020-06-11 Strippable optical film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010530602.3A CN111634096B (en) 2020-06-11 2020-06-11 Strippable optical film

Publications (2)

Publication Number Publication Date
CN111634096A CN111634096A (en) 2020-09-08
CN111634096B true CN111634096B (en) 2022-10-04

Family

ID=72325642

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010530602.3A Active CN111634096B (en) 2020-06-11 2020-06-11 Strippable optical film

Country Status (1)

Country Link
CN (1) CN111634096B (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5508946B2 (en) * 2010-06-16 2014-06-04 デクセリアルズ株式会社 Optical body, window material, joinery, solar shading device, and building
CN206818904U (en) * 2017-05-17 2017-12-29 锦湖光电(深圳)有限公司 Composite construction bright enhancement film and backlight module

Also Published As

Publication number Publication date
CN111634096A (en) 2020-09-08

Similar Documents

Publication Publication Date Title
CN102131881B (en) Tackiness agent
WO2017038278A1 (en) Transfer film, electrode protection film for capacitance-type input device, laminated body, method for manufacturing laminated body, and capacitance-type input device
CN105505243A (en) Optical film with adhesive and production method thereof, and method for producing image display device
JP6615901B2 (en) TRANSFER FILM, ELECTRODE PROTECTIVE FILM FOR CAPACITANCE TYPE INPUT DEVICE, LAMINATE, METHOD FOR PRODUCING LAMINATE, AND CAPACITANCE INPUT DEVICE
CN1782873A (en) Photosensitive resin composition and method for preparing the same and photosensitive film comprising the same
CN101341443A (en) Photosensitive transfer material, member for display device, process for producing the member, black matrix, color filter, process for producing the color filter, substrate for display device, and dis
JP2017177546A (en) Transfer film, electrode protective film of capacitance type input device, laminate and capacitance type input device
CN107249872B (en) Transfer film, Sparent laminate, capacitive input device and image display device
CN101657755B (en) Method of manufacturing spacer for liquid crystal display device, substrate for liquid crystal display device having spacer manufactured by the method and liquid crystal display device having the same
JPH0675701A (en) Production of liquid crystal display device
CN102214024B (en) Touchpad and manufacturing method thereof as well as touch display panel with touchpad
CN111634096B (en) Strippable optical film
JP6730793B2 (en) Transfer film, electrode protection film of electrostatic capacitance type input device, laminated body and electrostatic capacitance type input device
CN110007382A (en) A kind of scratch resistance diffusion barrier and its processing technology
CN210725528U (en) Double-sided transparent functional plate with ultraviolet absorption layer
WO2020143406A1 (en) Manufacture method for display panel, display panel and display device
KR100959273B1 (en) Back Light Sheet
JP2015018834A (en) Lamination method of resin layer and resin laminate for use therein
JP2000258774A (en) Transfer film, method for formation of spacer to form gap between display device substrates, and liquid crystal display device
JP2648988B2 (en) Method of forming spacer for liquid crystal panel
CN115803122B (en) Method for producing laminated body
JP6888148B2 (en) Transfer film, electrode protective film for capacitive input device, laminate and capacitive input device
WO2022145851A1 (en) Window laminate and method for manufacturing same
KR101912583B1 (en) Film touch sensor, touch panel and image display device comprising the same
JP2003021713A (en) Manufacturing method for color filter

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