KR20170011502A - Surface Protection Film for Optical Component - Google Patents
Surface Protection Film for Optical Component Download PDFInfo
- Publication number
- KR20170011502A KR20170011502A KR1020150104220A KR20150104220A KR20170011502A KR 20170011502 A KR20170011502 A KR 20170011502A KR 1020150104220 A KR1020150104220 A KR 1020150104220A KR 20150104220 A KR20150104220 A KR 20150104220A KR 20170011502 A KR20170011502 A KR 20170011502A
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- South Korea
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- film
- protective film
- antireflection
- adhesive
- pressure
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/11—Anti-reflection coatings
- G02B1/113—Anti-reflection coatings using inorganic layer materials only
-
- 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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
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- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Adhesive Tapes (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
Description
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sticky adhesive layer formed on a protective film for protecting the surface of an optical component.
The surface of various optical parts such as anti reflection film, polarizing film, retardation film, light diffusion film, optical compensation film, prism sheet and lens is provided with a functional coating for imparting optical characteristics.
For example, an anti-reflection film is coated on the surface of an anti-reflection film.
The antireflection layer may be formed by coating a thin film of an inorganic material such as TiO2 to SiO2 with a layer by sputtering or by mixing the inorganic nanoparticles with an organic binder to form a coating. It is very thin.
The optical functional coating layer formed on the surface of such a film is very sensitive, and characteristics may easily change due to contamination from the outside or mechanical impact. Therefore, when transporting or working of the film is required, a protective film .
The protective film is usually coated with silicone resin or urethane resin having a sticky property on the surface of a film such as PE or PET.
Adhesive strength means that adhesive strength is so weak that it has a level of adhesion that can be easily attached and detached like 3M post-it.
A silicone resin or a urethane resin is generally referred to as a pressure-sensitive adhesive.
Therefore, in order to protect the surface of the optical film coated with the optical functional coating layer, a film in which a protective film coated with a pressure-sensitive adhesive is adhered is usually produced.
The present invention is not limited to the application to the non-antireflection film, but the content of the present invention will be described taking the application of the antireflection film, which is most sensitive to external contamination and mechanical impact, among the optical components as an example.
The main object of the present invention is to eliminate the influence of the adhesive layer material of the protective film to be attached to the antireflection film to prevent the antireflection film from migrating to the antireflection film to reduce the effect of the antireflection film.
Since the antireflection layer of the antireflection film utilizes the interference effect according to the wavelength of light, the thickness and the refractive index of the antireflection layer are important factors.
Generally, a silicone resin or a urethane resin is used as an adhesive layer of a protective film, and a part of the adhesive layer is transferred to the relative film when the film is separated.
In this case, a small amount of the adhesive may remain on the adherend, and in general applications, even if such adherend remains on the surface of the adherend, it does not become a big problem.
However, in the antireflection film, the antireflection effect is determined by the refractive index and the thickness of the antireflection layer, and the thickness of the antireflection layer is from several tens of nanometers to several hundreds of nanometers, so that the pressure- When a part of the material is transferred to the surface of the antireflection layer, the antireflection layer is coated with a material having another refractive index, thereby remarkably reducing the antireflection effect.
Therefore, it is very important to suppress the transfer of the protective film adhesive in the antireflection film having the protective film attached thereto.
In fact, when a protective film is attached to an antireflection film having a reflectance of about 0.5%, the degree of reflection of the antireflection film is increased to about 1.5%.
The process of preparing and installing the antireflection film includes an antireflection coating layer on one side of a transparent film such as PET, and a protective film is attached to protect the antireflection film.
For protection of the surface, after the protective film is attached and transferred and attached, remove the protective film.
In this separation process, the adhesive material of the protective film remains on the antireflection layer, thereby reducing the antireflection effect.
According to a preferred embodiment of the present invention for achieving the objects of the present invention described above, the adhesive of the adhesive layer of the protective film is provided with a figure in the form of a dispersed arrangement of figures by printing.
A figure is a point, a straight line, a curve, a polygon, a circle, an ellipse or an amorphous pattern.
The term " distributed arrangement " means arranging a plurality of figures at intervals.
The production by printing includes all the printing capable of implementing a desired shape such as silk screen printing, gravure printing, flexo printing, dispenser using multiple nozzles, and the like.
In the present invention, in the present invention, the method of printing is conventionally compared with the case where a pressure-sensitive adhesive is uniformly coated on the entire surface of a protective film as a roll-to-roll coating method in forming a pressure-sensitive adhesive layer on a protective film. The term " dispersed arrangement " means that the form in which the pressure-sensitive adhesive is printed has the shape of the figure and is partially formed in the film.
For example, when a pressure sensitive adhesive of the form of a square having a length of 1 millimeter on one side is printed at intervals of 1 centimeter, the structure of the pressure sensitive adhesive of 1 millimeter is dispersedly arranged at intervals of 1 centimeter.
The formation method thereof is formed on a protective film by a printing method using a pressure-sensitive adhesive ink.
Partially formed is the formation of a tackifier of one square millimeter area per square centimeter area.
Therefore, the adhesive is formed in an area of one-hundredth of the area of the protective film.
The shape and area of the adhesive form can be variously formed, and the area where the adhesive form is formed can be freely formed up to 0.01 percent of the area of the protective film.
The advantage of the structure in which the adhesive graphic form according to the present invention is dispersed and arranged can be seen from the result that the adhesive is left on the reflection layer of the antireflection film when the protective film is attached to the antireflection film and the degree of reflection increases.
In the conventional structure, when a protective film coated with a front pressure-sensitive adhesive is used, the pressure-sensitive adhesive remains on the entire surface of the antireflection film.
In this structure, if the antireflection film has an original reflectivity of 0.5% and the reflectivity of the antireflection film is increased by 1%, the reflectivity becomes 1.5%.
The extent to which the reflectivity increases depends on the composition of the adhesive and the amount of residue and the antireflection layer, and the above values are shown as an example.
Therefore, the initial quality of the antireflection film is different from the case where the protective film is adhered to the adherend and then the protective film is separated for transfer, and the degree of reflectivity is increased by the residual adhesive layer.
The increase of the reflectivity depends on the kind of the antireflection film, the kind of the pressure-sensitive adhesive, the storage state, etc. However, it is a serious problem that the quality of the reflection ring film is deteriorated by the protective film.
Therefore, the production of the protective film by the shape of the adhesive pattern according to the present invention and the attachment of the antireflection film and the protective film according to the present invention solve this problem.
In the structure of the present invention described above, when the pressure-sensitive adhesive is applied on the entire surface of the protective film and the pressure-sensitive adhesive pattern is formed at intervals of 1 centimeter in the form of square of 1 millimeter size, the decrease of the reflectivity by the residual pressure- The calculation is as follows.
The reflectivity is a comparison between the amount of light irradiated on a certain area of the film and the amount of light reflected. Thus, when a 1 mm-thick adhesive pattern is formed at intervals of 1 cm, the reflectivity is calculated as follows.
Assuming that the antireflection film of the antireflection film has a reflectance of 0.5% in an area of 1 square centimeter of the area where the adhesive is absent and 1.5% of the area of the area where the adhesive remained, the structure according to the present invention has an area of 1 square centimeter , The reflectivity increases by 1.5%, which is the value obtained by dividing 1.5% by 100, again by 0.015%. Therefore, the adhesive property of the adhesive form The degree of reflection of the antireflection film in this residual state is 0.515%.
This results in a slight increase in reflectivity, and a protective film can be used.
Further, in order to further reduce the reflectivity, the area occupied by the adhesive pattern in the protective film may be further reduced.
Even if the pressure-sensitive adhesive is partially formed in the shape of a figure, its function as a protective film is not problematic.
Protective films are less susceptible to weak adhesion to antireflective films and may be transported in structures that are as weakly adhered as possible.
In particular, anti-reflective film is produced in hundreds of meters, and the protective film is manufactured in a few hundreds of meters, so that it is rolled in the form of roll while being attached to the anti-reflection film.
Therefore, as a form of adhesion between the protective film formed with the adhesive pattern formed by the dispersion according to the present invention and the antireflection film attached with the protective film and the protective film, The product can be transported and attached and can be stored and stored.
In an antireflection film using a protective film having a pressure-sensitive adhesive pattern formed thereon in accordance with the present invention, the area of the pressure-sensitive adhesive remaining in the antireflection film of the antireflection film when the protective film is separated is minimized, Minimizing the increase in light reflection.
1 shows a simple structure of a conventional protective film as a plan view (a) and a sectional view (b).
2 is a cross-sectional view of a process of attaching a surface coated with a pressure-sensitive adhesive layer of a protective film on a surface of an antireflection film having an antireflection layer as a part of such a conventional process.
FIG. 3 is a cross-sectional view showing a surface of the antireflection film on which the antireflection layer is provided, to which a surface coated with a pressure-sensitive adhesive layer is attached.
4 is a cross-sectional view in which the surface having the antireflection layer of the antireflection film and the surface coated with the pressure-sensitive adhesive layer of the protective film are separated.
FIG. 5 is a plan view and a cross-sectional view of a structure in which a pressure-sensitive adhesive is dispersed in the form of an adhesive pattern on one side of a protective film according to the present invention.
FIG. 6 shows the residual structure of a pressure-sensitive adhesive when the partial pressure-sensitive adhesive protective film according to the present invention is attached to an antireflection layer of an antireflection film and then separated.
In Fig. 7, various forms of the adhesive agent are shown as an example.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments. For reference, the same numbers in this description refer to substantially the same elements and can be described with reference to the contents described in the other drawings under the above-mentioned rules, and the contents which are judged to be obvious to the person skilled in the art or repeated can be omitted.
1 shows a simple structure of a conventional protective film as a plan view (a) and a sectional view (b).
(a) is a plan view, and a sticky
In the sectional view (b), the
In general, protective films are used to protect products during the storage, transportation and work process of products. Poly (ethylene terephthalate) and PET based films are inexpensive base films.
The protective film shown in Fig. 1 is the simplest structure, and a silicone resin or a urethane-based resin is widely used as a pressure-sensitive adhesive for the pressure-sensitive adhesive layer.
The characteristic of the pressure-sensitive adhesive of the protective film is that it is applied to the entire surface of the base film of the protective film.
This is because it is applied to most general adhesive films, and a liquid adhesive resin is formed by roll-to-roll coating and dried for curing.
The advantage of roll-to-roll coating using a liquid resin is that it is easy to mass-produce.
When attaching a protective film to an antireflection film or the like, it is attached by a roll-to-roll bonding process.
This is a method to be used for adhering a film and a film, in which an antireflection film and a protective film wound on different rolls are unrolled while a side of the protective film having the adhesive layer is an antireflection coating of the antireflection film So that they can be attached to the surface in a combined manner.
2 is a cross-sectional view of a process of attaching a surface coated with a pressure-sensitive adhesive layer of a protective film on a surface of an antireflection film having an antireflection layer as a part of such a conventional process.
As shown in the drawing, the surface on which the
Although a part of the antireflection film and a part of the protective film are shown as an example in this drawing, the actual production is a process in which each film is rolled in rolls of several hundreds of meters or more, to be.
FIG. 3 is a cross-sectional view showing a surface of the antireflection film on which the antireflection layer is provided, to which a surface coated with a pressure-sensitive adhesive layer is attached.
The surface on which the
In general, products with anti-reflection film and protective film attached are shipped from the factory and stored or transported.
4 is a cross-sectional view in which the surface having the antireflection layer of the antireflection film and the surface coated with the pressure-sensitive adhesive layer of the protective film are separated.
The surface on which the pressure sensitive
This is the process of finally installing the product and attaching the antireflection film to the window or display and then separating the protective film.
In this process, a part of the pressure-
Fig. 4 (b) is an enlarged view thereof.
The
This is because the pressure sensitive adhesive material such as silicon is basically weak but has an adhesive property so that it adheres and remains on the adherend when it is separated.
Particularly, the sticking agent is likely to remain as the sticking state becomes longer or the storage temperature becomes higher.
When the adhesive is left in the antireflection film, a new coating layer is formed on the antireflection coating layer, which is precisely designed and hinders the properties of the antireflection film.
Conventionally, attempts have been made to solve such a problem by changing the kind of the pressure-sensitive adhesive, but it is very difficult to exhibit the characteristics of preventing the transferring by satisfying both the adhesive force and the cohesive force of the pressure-sensitive adhesive simultaneously.
Therefore, a part of the adhesive is left on the adherend.
If the adhesive remains, the reflectance of the antireflection film generally increases by 1% or more.
Reflectivity of light-reflective coatings is typically less than 1%, and especially less than 0.5%.
Therefore, it is a serious problem that the adhesive in the protective film remains on the antireflection layer and the reflectivity increases by 1% or more.
When the original reflectivity of the antireflection film is made to be 0.5% as an example of the increase of the reflectivity by the remaining adhesive, the reflectivity of 1% or more is increased by the adhesive remaining on the antireflection layer of the antireflection film, And 1.5%.
The extent to which the reflectivity increases depends on the composition of the adhesive and the amount of residue and the antireflection layer, and the above values are shown as an example.
Therefore, the quality of the antireflection film is different from that of the case where the protective film is attached to the adherend and then the protective film is separated for transferring. When the protective film is peeled off, the degree of reflectivity is increased by the residual adhesive layer .
The increase of the reflectivity depends on the kind of the antireflection film and the kind of the pressure-sensitive adhesive, but it is a serious problem that the quality of the reflection ring film is lowered by the protective film.
Therefore, it is an important problem to solve the problem that the adhesive of the protective film remains in the antireflection layer of the antireflection film to increase the reflectivity to light.
In the present invention, in order to solve such a problem, conventionally, a pressure-sensitive adhesive is coated on the entire surface of a protective film with a roll-to-roll film to form a pressure-sensitive adhesive pattern which is partially dispersed on one surface of the protective film by a printing method.
This is because the adhesive of the adhesive layer of the protective film has a dispersed arrangement form of the figure by printing.
FIG. 5 is a plan view and a cross-sectional view of a structure in which a pressure-sensitive adhesive is dispersed in the form of an adhesive pattern on one side of a protective film according to the present invention.
As shown in the plan view (a) and the sectional view (b), the
In the above structure, the figure refers to a point, a straight line, a curve, a polygon, a circle, an ellipse or an amorphous pattern.
The term " distributed arrangement of figures " means arranging a plurality of figures at intervals.
The production by printing includes all printing capable of implementing a desired shape such as silk screen printing, gravure printing for printing in roll units, or flexo printing.
In the present invention, in the present invention, the pressure-sensitive adhesive layer is formed on the protective film as a roll-to-roll coating method, and the pressure-sensitive adhesive is uniformly coated on the entire surface of the protective film.
However, in the present invention, the dispersion arrangement of a plurality of graphics by printing means that each of the forms in which the adhesive is printed has the shape of a figure and is partially formed in the protective film.
For example, when a pressure sensitive adhesive of the form of a square having a length of 1 millimeter on one side is printed at intervals of 1 centimeter, the structure of the pressure sensitive adhesive of 1 millimeter is dispersedly arranged at intervals of 1 centimeter.
The formation method thereof is formed on a protective film by a printing method using a pressure-sensitive adhesive ink.
Partially formed is the formation of a tackifier of one square millimeter area per square centimeter area.
Therefore, the adhesive is formed in an area of one-hundredth of the area of the protective film.
The shape and area of the adhesive form can be variously formed, and the area where the adhesive form is formed can be freely formed up to 0.01 percent of the area of the protective film.
The advantage of the structure in which the adhesive graphic form according to the present invention is dispersed and arranged can be seen from the result that the adhesive is left on the reflection layer of the antireflection film when the protective film is attached to the antireflection film and the degree of reflection increases.
FIG. 6 shows the residual structure of a pressure-sensitive adhesive when the partial pressure-sensitive adhesive protective film according to the present invention is attached to an antireflection layer of an antireflection film and then separated.
This is a general process of producing an antireflection film. The antireflection film is coated to prepare an antireflection film. Then, a protective film is attached for storage and transportation. After the antireflection film is attached to a glass or the like, FIG.
(a) shows a
Generally, this process is carried out with roll rolls, but it can also be cut and cut in the form of a sheet.
(b) shows a structure in which the
As shown in the figure, the adhesive is partially adhered to the antireflection layer.
(c) shows a diagram in which the partial adhesive
In this process, the adhesive of the adhesive pattern remains in the form of the
In the plan view (d), a figure in which a plurality of
The adhesive is left on the antireflection layer of the antireflection film so that the pressure sensitive adhesive remains only on a part of the antireflection layer, so that the performance of the antireflection layer is not greatly influenced by the low reflection effect.
Therefore, the production of the protective film by the shape of the adhesive pattern according to the present invention and the attachment of the antireflection film and the protective film according to the present invention solve this problem.
In the structure of the present invention described above, when the pressure-sensitive adhesive is applied on the entire surface of the protective film and the pressure-sensitive adhesive pattern is formed at intervals of 1 centimeter in the form of square of 1 millimeter size, the decrease of the reflectivity by the residual pressure- The calculation is as follows.
The reflectivity is a comparison between the amount of light irradiated on a certain area of the film and the amount of light reflected. Thus, when a 1 mm-thick adhesive pattern is formed at intervals of 1 cm, the reflectivity is calculated as follows.
Assuming that the antireflection film of the antireflection film has a reflectance of 0.5% in an area of 1 square centimeter of the area where the adhesive is absent and 1.5% of the area of the area where the adhesive remained, the structure according to the present invention has an area of 1 square centimeter , The reflectivity increases by 1.5%, which is the value obtained by dividing 1.5% by 100, again by 0.015%. Therefore, the adhesive property of the adhesive form The degree of reflection of the antireflection film in this residual state is 0.515%.
This results in a slight increase in reflectivity, and a protective film can be used.
Further, in order to further reduce the reflectivity, the area occupied by the adhesive pattern in the protective film may be further reduced.
Even if the pressure-sensitive adhesive is partially formed in the shape of a figure, its function as a protective film is not problematic.
Protective films are less susceptible to weak adhesion to antireflective films and may be transported in structures that are as weakly adhered as possible.
In particular, anti-reflective film is produced in hundreds of meters, and the protective film is manufactured in a few hundreds of meters, so that it is rolled in the form of a roll while being attached to the anti-reflection film.
Therefore, as a form of adhesion between the protective film formed with the adhesive pattern formed by the dispersion according to the present invention and the antireflection film adhered with the protective film and the protective film, Storage can be made possible.
The shape, size, and spacing of the adhesive formed on one side of the protective film can be variously determined depending on the type and adhesion of the adhesive, the effect of light reflection such as a moiré effect, and the degree of increase in reflectivity .
In addition, as a feature of the protective film of the pressure-sensitive adhesive graphic form of the present invention, even if the pressure-sensitive adhesive of the adhesive type remains on the adherend, the size of the pressure-sensitive adhesive graphic form is made within 0.1 millimeter, The shape due to the residual shape of the adhesive pattern is hardly visible.
In Fig. 7, shapes of various types of pressure-sensitive adhesives are shown as an example.
7 (a) shows a pressure-sensitive adhesive image having a circular shape on the
Thus, each adhesive form is separated, and the shapes of the shapes can be various shapes such as lines, circles, ellipses, polygons, and curves.
The anti-reflective layer of the reflective film to which the present invention is applied is a transparent inorganic thin film such as SiO2, TiO2, Al2O3, MgF2 or the like having a thickness ranging from several tens of nanometers to several hundreds of nanometers, Sputtering method or the like. Alternatively, inorganic nanoparticles such as SiO2, TiO2, and WO3 may be mixed with a solvent or a resin to form a liquid film on the film, followed by drying. .
The product according to the present invention is a protective film formed by dispersing a sticky adhesive, which is an adhesive having a weak adhesive force, on a protective film so as to be formed in a part of the entire area of the protective film in the form of a figure.
In addition, the antireflection film having the antireflection layer formed thereon and the antireflection film having the surface on which the pressure-sensitive adhesive for protecting the antireflection layer is dispersed and arranged in the form of a pattern, Is a product of the attached type.
The surfaces of various optical components such as polarizing films, retardation films, light diffusion films, optical compensation films, and prism sheets, which are optical films for optical properties, A protective film having a structure in which the pressure-sensitive adhesive according to the present invention is dispersed in the form of a graphic pattern is required.
Further, antireflection coating is applied to a lens made of injection plastic or glass processing to enhance light transmittance. Therefore, the structure of the pressure-sensitive adhesive of the pressure-sensitive adhesive protective film for protecting the surface is dispersed and arranged in the shape of a figure according to the present invention. A protective film on which a pressure-sensitive adhesive having a structured structure is formed.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof,
It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the following claims.
The
The
The
Attachment (204) Partial Adhesion Protection Film (501)
The base film (502), the adhesive form (503)
The process of attaching (601)
Claims (7)
The pressure-sensitive adhesive has the shape of a figure,
The spacers are spaced apart from each other,
Wherein the pressure-sensitive adhesive is partially adhered to one surface of the film.
Wherein the shape of the adhesive of the protective film is in the form of a line, a circle, or a polygon.
A form in which a protective film partially formed by dispersing and dispersing the adhesive in the form of a graphic is attached,
Characterized in that a surface of the optical component coated with a functional coating and a pressure-sensitive adhesive layer formed partly of the protective film are attached.
Wherein the optical component is an antireflection film coated with an antireflection layer of light.
The antireflection layer of the antireflection film is a transparent inorganic thin film such as SiO2, TiO2, Al2O3, MgF2 or the like, which has a thickness ranging from several tens of nanometers to several hundreds of nanometers, and is formed by sputtering And,
Wherein an antireflection layer is formed by mixing inorganic particles of nanometer size such as SiO2, Ti2O3, and WO3 with a solvent and a resin to form a liquid film on the film, followed by drying. The resulting optical parts and protective film.
Characterized in that the optical component having a functional coating is a polarizing film, a retardation film, a light diffusion film, an optical compensation film or a prism sheet, and an optical component and a protective film mutually attached.
An optical component having a functional coating is an optical component to which an antireflection coating is applied to enhance light transmittance, such as an injection plastic or a glass processing, and an optical component and a protective film .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150104220A KR20170011502A (en) | 2015-07-23 | 2015-07-23 | Surface Protection Film for Optical Component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150104220A KR20170011502A (en) | 2015-07-23 | 2015-07-23 | Surface Protection Film for Optical Component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20170011502A true KR20170011502A (en) | 2017-02-02 |
Family
ID=58151931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020150104220A KR20170011502A (en) | 2015-07-23 | 2015-07-23 | Surface Protection Film for Optical Component |
Country Status (1)
| Country | Link |
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| KR (1) | KR20170011502A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190030900A (en) * | 2017-09-15 | 2019-03-25 | 김기범 | Method for manufacturing ink composition for silk screen printing of adhesive for silicon adhesion |
| CN109627814A (en) * | 2018-12-24 | 2019-04-16 | 国家电投集团科学技术研究院有限公司 | A kind of silicon dioxide nano composite material and its preparation method and application |
| KR20200076521A (en) * | 2018-12-19 | 2020-06-29 | 주식회사 세코닉스 | Lens for camera module |
-
2015
- 2015-07-23 KR KR1020150104220A patent/KR20170011502A/en unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190030900A (en) * | 2017-09-15 | 2019-03-25 | 김기범 | Method for manufacturing ink composition for silk screen printing of adhesive for silicon adhesion |
| KR20200076521A (en) * | 2018-12-19 | 2020-06-29 | 주식회사 세코닉스 | Lens for camera module |
| CN109627814A (en) * | 2018-12-24 | 2019-04-16 | 国家电投集团科学技术研究院有限公司 | A kind of silicon dioxide nano composite material and its preparation method and application |
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