CN107336490B - UV type hydrofluoric acid resistant film and glass thinning method using same - Google Patents
UV type hydrofluoric acid resistant film and glass thinning method using same Download PDFInfo
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- CN107336490B CN107336490B CN201610285242.9A CN201610285242A CN107336490B CN 107336490 B CN107336490 B CN 107336490B CN 201610285242 A CN201610285242 A CN 201610285242A CN 107336490 B CN107336490 B CN 107336490B
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- 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
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- 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
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
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- 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
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- 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
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C15/00—Surface treatment of glass, not in the form of fibres or filaments, by etching
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
-
- 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
- B32B2250/00—Layers arrangement
- B32B2250/03—3 layers
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- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
-
- 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
- B32B2457/00—Electrical equipment
- B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
- B32B2457/208—Touch screens
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Human Computer Interaction (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Surface Treatment Of Glass (AREA)
- Laminated Bodies (AREA)
Abstract
The invention aims to provide a UV type hydrofluoric acid resistant film which has a simple structure and good acid resistant effect, can realize good thinning of a touch screen and is easy to realize debonding, and comprises a release film and a film body which is used for being stuck on a glass touch screen after the release film is torn off, wherein the film body comprises a first adhesive layer, a polyolefin film layer, a second adhesive layer and a polyethylene terephthalate film layer which are sequentially and outwards arranged on the surface of the glass touch screen, and the release film is arranged on the first adhesive layer; the edge of the film body is expanded by 3-10mm more than the edge of the glass touch screen; the first adhesive layer is UV glue-breaking type acrylic adhesive. The second aim of the invention is to provide a method for thinning glass by adopting the UV type hydrofluoric acid resistant film, wherein the glass touch screen can not be degummed and acid seeping in the thinning process, and the thinning effect is good; the whole process flow is short, the process parameters are easy to control, and the industrial application is convenient.
Description
Technical Field
The invention relates to the technical field of touch panel processing, in particular to a UV type hydrofluoric acid resistant film and a method for thinning glass by using the same.
Background
The ultra-thin glass substrate structure touch screen is generally characterized in that after the yellow light process is finished, an acid-resistant film is attached to the process surface for protection, the glass surface is etched and thinned by hydrofluoric acid, and then the acid-resistant film is torn off.
The acid-resistant film adopted in the prior art is a single layer, is generally made of polyethylene terephthalate (PET) or Polyolefin (PO), has the same appearance and size as the touch screen sensor, and is easy to etch unevenly at the place where the touch screen is contacted with the basket, so that the phenomenon of water ripple is easy to occur. If the acid-resistant film of the PET substrate is used, the acid-resistant film is harder and has better supporting effect, but the acid-permeable film attacks the photoresist of the protective layer of the process surface, so that the photoresist of the protective layer of the process surface can be removed by the photoresist stripping film after thinning. If the acid-resistant film of the polyolefin PO substrate is used, acid cannot permeate, the acid-resistant effect is good, but the polyolefin PO film is softer, the supporting effect is poor, the edge is easy to open, and the circuit of the processing surface is etched, so that the electrical property is poor.
In view of the foregoing, there is a strong need for an acid-resistant film that has a reduced structure and is capable of making a touch screen very thin to solve the problems in the prior art.
Disclosure of Invention
The invention provides a UV type hydrofluoric acid resistant film which has a simple structure, good acid resistant effect, can realize good thinning of a touch screen and is easy to realize debonding, and the technical scheme is as follows:
a UV type hydrofluoric acid resistant film comprises a release film and a film body which is used for being stuck on a glass touch screen after the release film is torn off;
the film body comprises a first adhesive layer, a polyolefin film layer, a second adhesive layer and a polyethylene terephthalate film layer which are sequentially arranged outwards from the surface of the glass touch screen;
the edge of the film body is expanded by 3-10mm more than the edge of the glass touch screen;
the first adhesive layer is UV glue-breaking type acrylic adhesive.
In the technical scheme, the thickness of the polyolefin film layer is preferably 0.05-0.2mm; the thickness of the polyethylene terephthalate film layer is 0.1-0.2mm; the thickness of the first adhesive layer and the second adhesive layer is 10-30 mu m.
In the technical scheme, preferably, the edge of the film body is expanded 5-8mm more than the edge of the glass touch screen.
The technical scheme of the invention has the following beneficial effects: (1) The UV type hydrofluoric acid resistant film comprises a film body which is used for being stuck on a glass touch screen after a release film is torn off, wherein the film body comprises a first adhesive layer, a polyolefin film layer, a second adhesive layer and a polyethylene terephthalate film layer which are sequentially arranged outwards from the surface of the glass touch screen, and the overall structure is simplified; (2) The combination of the polyolefin film layer and the polyethylene terephthalate film layer adopts a specific order (the polyethylene terephthalate film can permeate acid, but the polyolefin film can not permeate acid, so the film layer adopts the specific order), so that the film layer can have enough supporting effect and acid-resistant effect, and the phenomena of edge gumming and photoresist shedding of a touch screen protective layer caused by acid permeation can not occur; (3) The distance from the side surface of the film body to the side surface of the glass touch screen is 3-10mm, namely, compared with the appearance of the glass touch screen, the film body is properly expanded, the problem of edge glue opening does not occur, and therefore, a circuit on a manufacturing process surface is not etched, and the electrical property is good; (4) The first glue film is UV gel-breaking type acrylic rubber, meets the gel-breaking requirement, and is high in practicality.
A second object of the present invention is to provide a method for thinning glass using the above UV-type hydrofluoric acid resistant film, comprising the steps of:
the first step: tearing off the release film and then attaching the film body to the manufacturing process surface of the glass touch screen;
and a second step of: inserting the glass touch screen with the UV-type hydrofluoric acid resistant film into a basket tool, and putting into an etching tank filled with hydrofluoric acid glass etching solution for etching to obtain an etched product;
and a third step of: cleaning the etched product, and then de-gelling the etched product; and tearing off the etched film body to obtain the thinned glass touch screen.
In the above technical scheme, preferably, the hydrofluoric acid glass etching solution comprises, by weight, 15-17% of hydrofluoric acid, 1-5% of hydrochloric acid, 3-15% of ammonium chloride, 0.5-2% of chelating agent, 1-5% of auxiliary agent and the balance of water.
In the above technical solution, preferably, the de-gelling process specifically comprises: irradiating the etched product with 365nm UV lamp with irradiation energy of 200-1000mJ/cm 2 。
By adopting the method, the glass touch screen can not generate the phenomena of glue opening and acid seepage in the thinning process, and the thinning effect is good; the whole process flow is short, the process parameters are easy to control, and the industrial application is convenient.
In addition to the objects, features and advantages described above, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
fig. 1 is a schematic structural view of a UV type hydrofluoric acid resistant film of a preferred embodiment 1 of the present invention;
FIG. 2 is a schematic view of the UV type hydrofluoric acid resistant film of FIG. 1 in use (in use, the release film is torn away);
FIG. 3 is a graph of the connection of a film-coated glass touch screen to a spacer in a blue tool;
wherein, 1, a film body, 11, a first adhesive layer, 12, a polyolefin film layer, 13 and a second adhesive layer, 14, a polyethylene terephthalate film layer, 15, a release film, 2, a glass touch screen, 3 and a parting strip in a blue tool.
Detailed Description
Embodiments of the invention are described in detail below with reference to the attached drawings, but the invention can be implemented in a number of different ways, which are defined and covered by the claims.
Example 1:
referring to fig. 1 and 2, a UV type hydrofluoric acid resistant film includes a release film 15 and a film body 1 for adhering to a glass touch screen after tearing off the release film 15, wherein the film body 1 includes a first adhesive layer 11, a polyolefin film layer 12, a second adhesive layer 13 and a polyethylene terephthalate film layer 14 sequentially and outwardly arranged on the surface of the glass touch screen.
The edge of the film body 1 is expanded outwards (the expansion distance is d) by 5mm compared with the edge of the glass touch screen 2.
The first adhesive layer 11 is an UV glue-breaking acrylic adhesive; the second adhesive layer 12 may be an acrylic adhesive with UV decomposition, or an acrylic adhesive with non-UV decomposition.
The thickness of the polyolefin film layer 12 is 0.1mm; the thickness of the polyethylene terephthalate film layer 14 is 0.14mm; the thickness of the first glue layer 11 and the second glue layer 12 is 25 μm.
The method for thinning glass by adopting the UV type hydrofluoric acid resistant film comprises the following steps:
the first step: tearing off the release film 15 on the film body 1 and then attaching the release film on the manufacturing process surface of the glass touch screen;
and a second step of: inserting a glass touch screen with an attached UV type hydrofluoric acid resistant film into a basket tool, putting into an etching groove filled with hydrofluoric acid glass etching solution for etching to obtain an etching product, wherein the etching time is determined according to the thickness of thinning (the time required for thinning a single side of 0.4mm glass to 0.13mm is about 65 minutes), and specifically comprises the following steps: fixing a glass touch screen 2 stuck with a UV type hydrofluoric acid resistant film on a division bar 3 in a blue tool for etching, and referring to FIG. 3 in detail;
and a third step of: cleaning the etched product, and then de-gelling the etched product; and tearing off the etched film body to obtain the thinned glass touch screen.
The hydrofluoric acid glass etching solution in the process is specifically: comprises 15-17% of hydrofluoric acid, 1-5% of hydrochloric acid, 3-15% of ammonium chloride, 0.5-2% of chelating agent, 1-5% of auxiliary agent and the balance of water (the chelating agent and the auxiliary agent can be prepared by adopting reagents conventional in industry).
The de-gelling process specifically comprises the following steps: irradiating the etched product with 365nm UV lamp with UV energy of 500-800mJ/cm 2 。
In the method for thinning glass using the UV-type hydrofluoric acid resistant film of the present example (20 pieces were taken), the effects are shown in table 3.
Example 2-example 6:
examples 2-6 differ from example 1 in that table 1 shows:
table 1 parameter statistics table of example 2-example 6
The effects of the UV type hydrofluoric acid resistant film of examples 2 to 6 and the method for thinning glass using the same (20 sheets each) are shown in table 3.
Comparative example 1-comparative example 5:
comparative example 1-comparative example 5 differs from example 1 in that table 2 shows:
table 2 parameter statistics table of comparative example 1-comparative example 5
Example\parameters | d/mm | Thickness of polyolefin film layer/mm | Thickness of polyethylene terephthalate film layer/mm |
Comparative example 1 | 0 | 0.1 | - |
Comparative example 2 | 0 | - | 0.12 |
Comparative example 3 | 1 | 0.1 | 0.12 |
Comparative example 4 | 2 | 0.1 | 0.12 |
Comparative example 5 | 12 | 0.1 | 0.12 |
The effects of the UV type hydrofluoric acid resistant film of comparative example 1 to comparative example 5 and the method of performing glass thinning (20 sheets each) are shown in table 3.
Comparative example 6:
comparative example 6 differs from example 1 in that: the edge of the film body 1 is locally expanded outwards than the edge of the glass touch screen 2.
In the method of thinning glass using the UV-type hydrofluoric acid resistant film of comparative example 6 (20 pieces each), the effects are shown in table 3.
TABLE 3 statistical table of effects of example 1-example 6 and comparative example 1-comparative example 6
As can be seen from Table 3, (1) compared with the double-layer film of the present invention, the single-layer film (comparative example 1 and comparative example 2) showed severe gumming or water seepage during the thinning process; (2) The film body is expanded compared with the appearance of the glass touch screen, so that the thinning effect can be improved to a proper extent, but if the expanded distance is too small (such as comparative example 3 and comparative example 4), as the highest and lowest positions of the basket division bars are about 3mm, part of the touch screen can be blocked by the division bars in the thinning process, the acid mobility is poor, the etching is uneven, the edge water ripple and the edge water ripple are poor, the appearance of percentage is poor, and the practical requirement cannot be met; however, the external expansion size is too large (as in comparative example 5), and the production process shakes too much, so that the edge is open; (3) If the film body is only partially expanded (as in comparative example 6), the appearance of the film body is still poor. Therefore, the invention adopts two layers of protective films, and the expansion of the films is controlled at a certain size, thereby greatly improving the thinning effect.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The UV type hydrofluoric acid resistant film is characterized by comprising a release film (15) and a film body (1) which is used for being stuck on a glass touch screen after the release film (15) is torn off;
the film body (1) comprises a first adhesive layer (11), a polyolefin film layer (12), a second adhesive layer (13) and a polyethylene terephthalate film layer (14) which are sequentially arranged outwards from the surface of the glass touch screen;
the edge of the film body (1) is expanded by 3-10mm more than the edge of the glass touch screen, and the first adhesive layer (11) is UV glue-breaking acrylic adhesive.
2. UV-type hydrofluoric acid resistant film according to claim 1, characterized in that the thickness of the polyolefin film layer (12) is 0.05-0.2mm; the thickness of the polyethylene terephthalate film layer (14) is 0.1-0.2mm; the thickness of the first adhesive layer (11) and the second adhesive layer (13) is 10-30 mu m.
3. UV-type hydrofluoric acid resistant film according to claim 2, characterized in that the edges of the film body (1) are flared by 5-8mm from the edges of the glass touch screen.
4. A method for glass thinning using the UV-type hydrofluoric acid resistant film according to any one of claims 1 to 3, comprising the steps of:
the first step is that the film body (1) is stuck on the manufacturing process surface of the glass touch screen after the release film (15) is torn off;
inserting the glass touch screen with the UV-type hydrofluoric acid resistant film into a basket tool, and putting the glass touch screen into an etching groove filled with hydrofluoric acid glass etching solution for etching to obtain an etched product;
and thirdly, cleaning the etched product, then debonding the etched product, and tearing off the etched film body to obtain the thinned glass touch screen.
5. The method for thinning glass according to claim 4, wherein the hydrofluoric acid glass etching liquid comprises, by weight, 15-17% of hydrofluoric acid, 1-5% of hydrochloric acid, 3-15% of ammonium chloride, 0.5-2% of chelating agent, 1-5% of auxiliary agent and the balance of water.
6. The method for thinning glass according to claim 4, wherein the de-sizing process is performed by irradiating the etched product with a 365nm UV lamp with a UV energy of 200-1000mJ/cm 2 。
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CN110105722A (en) * | 2019-04-17 | 2019-08-09 | 蚌埠国显科技有限公司 | A kind of preparation method and application of polyethylene terephthalate composite material |
CN113066816B (en) * | 2020-01-02 | 2022-08-09 | 京东方科技集团股份有限公司 | Display module, display panel thinning method, display panel and display device |
CN113060940A (en) * | 2021-03-22 | 2021-07-02 | 天津盛诺电子科技有限公司 | Single-face thinning process for rigid OLED display screen |
CN113437118A (en) * | 2021-06-10 | 2021-09-24 | 深圳市华星光电半导体显示技术有限公司 | Flexible display panel and preparation method thereof |
CN113307503A (en) * | 2021-06-24 | 2021-08-27 | 芜湖长信新型显示器件有限公司 | Vehicle-mounted curved surface Sensor glass thinning process method |
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