CN110499118A - Screen protecting film and its manufacturing method, electronic equipment - Google Patents
Screen protecting film and its manufacturing method, electronic equipment Download PDFInfo
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- CN110499118A CN110499118A CN201910694875.9A CN201910694875A CN110499118A CN 110499118 A CN110499118 A CN 110499118A CN 201910694875 A CN201910694875 A CN 201910694875A CN 110499118 A CN110499118 A CN 110499118A
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- transparent extraction
- extraction layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
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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
-
- 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
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
-
- 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
- C09J7/40—Adhesives in the form of films or foils characterised by release liners
- C09J7/403—Adhesives in the form of films or foils characterised by release liners characterised by the structure of the release feature
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
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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
- 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
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
- C09J2301/12—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers
- C09J2301/122—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers the adhesive layer being present only on one side of the carrier, e.g. single-sided adhesive tape
-
- 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
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
- C09J2301/16—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the structure of the carrier layer
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- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
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- Theoretical Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
The present invention provides a kind of screen protecting film and its manufacturing method, electronic equipment; screen protecting film includes: transparent extraction layer; the transparent extraction layer has the first face and second face opposite with first face, and the absorption particle for being suitable for absorbing moisture and/or wet oxygen is distributed in the transparent extraction layer；Up-protective layer, on the first face of the transparent extraction layer；Adhesion layer, on the second face of the transparent extraction layer, the adhesion layer with screen for fitting.It in the scheme of the embodiment of the present invention, can prevent moisture or wet oxygen from entering screen, be conducive to improve protective effect of the screen protecting film to screen, thus be conducive to improve the service life of screen.
Description
Technical field
The present embodiments relate to field of display technology, in particular to a kind of screen protecting film and its manufacturing method, electronics
Equipment.
Background technique
The screen of the products such as current digital product such as mobile phone, plate, computer, car-mounted display is mostly plane screen.
In order to protect to screen, protective film usually is pasted on the screen of digital product, to effectively provide oil resistant to screen
Dirty, anti-oxidant and anti-scratch defencive function.
With the development of technology, such as flexible OLED screen curtain of flexible screen comes into being, and flexible screen is flexible foldable, and
Flexible screen equally has oil rub resistance, anti-oxidant and anti-scratch demand.
However, still to be improved for the protecting effect of the protective film of flexible screen at present.
Summary of the invention
The present invention provides a kind of screen protecting film and its manufacturing method, electronic equipment, to improve screen protecting film to screen
Protective capability.
To solve the above problems, the embodiment of the present invention provides a kind of screen protecting film, comprising: transparent extraction layer, it is described
Bright adsorption layer has the first face and second face opposite with first face, is distributed in the transparent extraction layer and is suitable for absorbing moisture
And/or the absorption particle of wet oxygen；Up-protective layer, on the first face of the transparent extraction layer；Adhesion layer is located at described transparent
On second face of adsorption layer, the adhesion layer with screen for fitting.
Due to being provided with transparent extraction layer between up-protective layer and adhesion layer, absorption grain is distributed in the transparent extraction layer
Son, so that perhaps wet oxygen is stopped to prevent moisture or wet oxygen from entering screen by transparent extraction layer via the moisture of screen protecting film
Curtain, thus be conducive to improve the service life of screen.
In addition, having oxygen-containing group functional group in the absorption particle；The absorption particle include PI particle, PET particle or
Person's PEN particle.Oxygen-containing group functional group is strong for the adsorption capacity of moisture perhaps wet oxygen and PI particle, PET particle or PEN
Influence of the son for the color of transparent extraction layer is weaker, guarantees that transparent extraction layer has good light transmission rate.
In addition, the forming material of the transparent extraction layer includes optical cement；Preferably, the transparent extraction layer with a thickness of
10 μm~30 μm.In this way, can either guarantee that transparent extraction layer has good adsorption effect, and screen for moisture or wet oxygen
Protective film still has relatively thin thickness, so that screen protecting film has good bending and crimpability, thus screen protecting film
Flexible screen can be protected.
In addition, the molar ratio of the absorption particle and the transparent extraction layer is 0.25:1-0.5:1.In this way, can either protect
The effect of adsorption moisture or wet oxygen is demonstrate,proved, and can guarantee that influence of the absorption particle for the appearance color of transparent extraction layer is small.
In addition, further includes: further include: TPU membrane, the TPU membrane are arranged in the up-protective layer and the transparent extraction layer
Between, alternatively, being arranged between the transparent extraction layer and the adhesion layer；Preferably, the TPU membrane with a thickness of 120 μm-
150μm。
In addition, the up-protective layer is the resistance to scraping coating of oil rub resistance；Preferably, the up-protective layer with a thickness of 5 μm of -20 μ
m。
In addition, the adhesion layer includes: from film layer and positioned at from the layer of silica gel in film layer, and the layer of silica gel is located at institute
State transparent extraction layer and described between film layer；Preferably, the layer of silica gel is the low removing layer of silica gel of high viscosity, in peel angle
Under the conditions of 180 °, the peeling force of the layer of silica gel is more than or equal to 150N/mm and is less than or equal to 200N/mm；Preferably, the silicon
Glue-line with a thickness of 10 μm -20 μm.
Correspondingly, the embodiment of the present invention also provides a kind of electronic equipment, comprising: screen；Above-mentioned screen protecting film, and it is viscous
Attached layer fits with screen.
Correspondingly, the embodiment of the present invention also provides a kind of manufacturing method of screen protecting film, comprising: provide up-protective layer；
On the up-protective layer formed transparent extraction layer, the transparent extraction layer have towards the up-protective layer the first face and
The absorption grain for being suitable for absorbing moisture and/or wet oxygen is distributed in the transparent extraction layer for second face opposite with first face
Son；Adhesion layer is formed, and the adhesion layer is located on the second face of the transparent extraction layer, the adhesion layer is used for and screen phase
Bonding.
In addition, the processing step for forming the transparent extraction layer includes: to prepare optical cement presoma；Before the optical cement
It drives and uniformly mixes water oxygen adsorbent material in body, form mixed solution；It is coated with the mixed solution on the up-protective layer, goes forward side by side
Row is dried, and forms the transparent extraction layer；Preferably, catalyst, the catalyst are also added in the mixed solution
Being conducive to, which makes the water oxygen adsorbent material that polycondensation occur, forms the absorption particle.
Compared with prior art, technical solution provided in an embodiment of the present invention has the advantage that
In above-mentioned technical proposal, transparent extraction layer is set between adhesion layer and up-protective layer, is divided in the transparent extraction layer
It is furnished with absorption particle, can prevent moisture and/or wet oxygen from invading via screen protecting film to screen, improves screen protecting film to screen
The protective capability of curtain.
Detailed description of the invention
One or more embodiments are illustrated by the picture in corresponding attached drawing, these exemplary theorys
The bright restriction not constituted to embodiment, the element in attached drawing with same reference numbers label are expressed as similar element, remove
Non- to have special statement, composition does not limit the figure in attached drawing.
Fig. 1 is the schematic diagram of the section structure for the screen protecting film that one embodiment of the invention provides；
Fig. 2 be another embodiment of the present invention provides screen protecting film the schematic diagram of the section structure；
Fig. 3 to Fig. 5 is that the corresponding cross-section structure of each step of screen protection film manufacturing method provided in an embodiment of the present invention shows
It is intended to.
Specific embodiment
It can be seen from background technology that, it is still to be improved for the performance of the protective film of flexible screen at present, specifically, protective film
It is weaker for the barrier effect of moisture and wet oxygen, thus water oxygen can be invaded via protective film to screen, lead to screen performance
It is deteriorated.
To solve the above problems, the embodiment of the present invention provides a kind of screen protecting film, moisture or wet oxygen is stopped to enter screen
Curtain improves protective effect of the screen protecting film to screen.
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing to the present invention
Each embodiment be explained in detail.However, it will be understood by those skilled in the art that in various embodiments of the present invention
In, in order to make the reader understand this application better, many technical details are proposed.But even if without these technical details and
Based on the various changes and modifications of following embodiment, the application technical solution claimed also may be implemented.
Fig. 1 is the schematic diagram of the section structure for the screen protecting film that one embodiment of the invention provides.
With reference to Fig. 1, the present embodiment includes: transparent extraction layer 101 by screen protecting film, and transparent extraction layer 101 has the
On one side 10 and second face 20 opposite with the first face 10, it is distributed in transparent extraction layer 101 and is suitable for absorbing moisture and/or wet oxygen
Adsorb particle 111；Up-protective layer 102, on the first face 10 of transparent extraction layer 101；Adhesion layer 103 is located at transparent extraction
On second face 20 of layer 101, adhesion layer 103 with screen pin ' h ' m for fitting.
Due to being provided with transparent extraction layer 101 between up-protective layer 102 and adhesion layer 103, and in transparent extraction layer 101
With absorption particle 111, it is thus possible to prevent one or both of moisture or wet oxygen from entering to screen via screen protecting film
In curtain, be conducive to improve protective effect of the screen protecting film to screen.It is understood that showing absorption in Fig. 1 with circle
Particle 111, the shape of absorption particle 111 be not limited to round and its distributing position in transparent extraction layer 101 be also with
Machine.
Screen protecting film provided in this embodiment is described in detail below with reference to attached drawing.
The screen protecting film can be used for protecting bent rollable flexible screen, such as flexible OLED screen curtain.
In the present embodiment, adhesion layer 103 includes: and the silicon from film layer 113 and positioned at from the layer of silica gel 123 in film layer 113
Glue-line 123 is located at transparent extraction layer 101 and between film layer 113.It is used to provide protective effect for layer of silica gel 123 from film layer 113,
More specifically, before screen protection layer is covered on screen, layer of silica gel 123 is covered from film layer 113, is guaranteed when from film layer
Layer of silica gel 123 has good adhesiveness when 113 removal.
Type from film layer 113 include PET release film, PE release film, OPP release film (bidirectional stretching polypropylene film) or
Person's PVC release film.In the present embodiment, the type from film layer 113 is PET release film.
From film layer 113 with a thickness of 40 μm -80 μm, for example, 45 μm, 55 μm, 65 μm, 70 μm.In the present embodiment, from film
Layer 113 with a thickness of 60 μm.
In the present embodiment, layer of silica gel 123 is the low removing layer of silica gel of high viscosity.Since the viscosity of layer of silica gel 123 is high, thus silicon
Adhesiveness between glue-line 123 and screen is good；And since layer of silica gel 123 has low fissility, thus do not need to protect when on screen
It is easy to remove layer of silica gel 123 from screen when cuticula.In the present embodiment, under the conditions of peel angle is 180 °, layer of silica gel 123
Peeling force be more than or equal to 150N/mm and be less than or equal to 200N/mm；Under the conditions of room temperature (25 DEG C) is often wet, the stripping of layer of silica gel 123
It is more than or equal to 200mm/min from speed and is less than or equal to 400mm/min.
The thickness of layer of silica gel 123 is unsuitable excessively thin, also unsuitable blocked up.If the thickness of layer of silica gel 123 is excessively thin, 123 table of layer of silica gel
Face flatness is relatively poor thus close fitting relatively poor between layer of silica gel 123 and screen, is unfavorable for improving layer of silica gel
Degree of fitting closely is carried out between 123 and screen；If the thickness of layer of silica gel 123 is blocked up, the screen protection when screen is bent
The bending performance of film is relatively poor.For this purpose, layer of silica gel 123 with a thickness of 10 μm -20 μm, for example, 12 μm, 14 μm, 18 μm.This
In embodiment, layer of silica gel 123 with a thickness of 15 μm, in this thickness sub-screen protective film convenient for bending, and be conducive to make screen
Protective film is fitted closely with screen.
There is the absorption particle 111 suitable for adsorption moisture and/or wet oxygen in transparent extraction layer 101, adsorb particle 111 saturating
It is uniformly distributed in bright adsorption layer 101, can prevent moisture or wet oxygen from invading to screen, such as manual key can be effectively prevented
The invasion of the moisture such as Shi Shouhan or wet oxygen provides safeguard to improve the service life of screen.
Since transparent extraction layer 101 has the demand of high transmittance, and adsorbs particle and can be good at being dispersed in transparent suction
In attached layer 101, for this purpose, the forming material of transparent extraction layer 101 is optical cement (OCA, Optically Clear in the present embodiment
Adhesive).In other embodiments, the forming material of transparent extraction layer can also be optics of liquids glue (LOCA, Liquid
Optically Clear Adhesive), UV optical cement (Ultraviolet Optically Clear Adhesive) or
Blade coating type optical cement (SLOCA, Slit Liquid Optically Clear Adhesive).
In the present embodiment, adsorbing has oxy functional groups in particle 111, which, which can effectively adsorb, invades
The water oxygen entered.In addition, absorption particle 111 includes polyimides (PI) particle in the present embodiment, i.e., absorption particle 111 includes PI
Particle, polyimide particle has translucent or transparent performance, and can be evenly distributed in optical cement, is advantageously implemented
Adsorb the purpose of Uniform Doped distribution of the particle 111 in transparent extraction layer 101.
The molar ratio for adsorbing particle 111 and transparent extraction layer 101 is 0.25:1-0.5:1.In the present embodiment, transparent extraction
The material of layer 101 is optical cement, and absorption particle 111 is PI particle, and the molar ratio of PI particle and optical cement is 0.25:1-0.5:
1, for example, 0.3:1,0.4:1.Within the scope of this, can either transparent extraction layer 101 translucency it is good, reduce PI particle plus
Enter the influence of the color to transparent extraction layer 101, and guarantees that transparent extraction layer 101 has the performance of good water oxygen absorption.
In other embodiments, absorption particle can also be PET (polyethylene terephthalate) particle or PEN
(polyethylene naphthalate) particle.
In the present embodiment, transparent extraction layer 101 with a thickness of 10 μm~30 μm, for example, 14 μm, 18 μm, 25 μm.At this
In one range, it can either guarantee that transparent extraction layer 101 has good absorption water oxygen effect, and the integral thickness of screen protecting film
It is relatively thin, avoid the problem that the blocked up bring of thickness is unfavorable for bending curling.The study found that if the thickness of transparent extraction layer 101 is big
In 30 μm, although the effect that transparent extraction layer 101 adsorbs water oxygen is still improving, the bending volume of screen protecting film will affect
It is bent.
Up-protective layer 102 is the film layer that user directly contacts.In the present embodiment, up-protective layer 102 is oil rub resistance scratch-resistant
Coating including UV-cured resin and is coated on the AFG oiliness factoring on UV-cured resin surface, so that greasy dirt
The fingerprint formed with sweat can quickly be taken away by air, and reduction has phenomena such as scattering as caused by fingerprint and is fuzzy.
The thickness of up-protective layer 102 can be 5 μm -10 μm, for example, 6.5 μm, 6 μm, 9 μm.In the present embodiment, upper protection
Layer 102 with a thickness of 8 μm, the light loss rate of up-protective layer 102 with the thickness can receive in range, and have good
Oil-stain-preventing scratch-resistant effect.
In the present embodiment, screen protecting film further include: TPU (Thermoplastic polyurethanes, thermoplastic poly
Urethane elastomer rubber) film 104, the setting of TPU membrane 104 is between transparent extraction layer 101 and adhesion layer 103.TPU membrane 104 has
High-tension, high-tensile strength, obdurability and anti-aging characteristic, are conducive to be further ensured that and carry out nothing between screen protecting film and screen
Seam fitting, especially when screen is bent or is crimped, screen protecting film still is able to have enough protective effects to screen.
The thickness of TPU membrane 104 is unsuitable excessively thin, also unsuitable blocked up.If the thickness of TPU membrane 104 is excessively thin, screen bending or
During curling, limitation that screen protecting film follows screen to be bent or crimped；If the thickness of TPU membrane 104 is blocked up, accordingly
A degree of influence can be brought on the translucency of screen.For this purpose, TPU membrane 104 with a thickness of 120 μm -150 μm, for example, 125
μm,135μm,145μm.In the present embodiment, TPU membrane 104 with a thickness of 140 μm.
The present embodiment provides a kind of superior screen protecting films of structural behaviour, are arranged between adhesion layer and up-protective layer saturating
The absorption particle suitable for adsorption moisture and/or wet oxygen is distributed in the transparent extraction layer for bright adsorption layer, can prevent moisture or
Wet oxygen is invaded via screen protecting film to screen, improves screen protecting film to the protective capability of screen.
Correspondingly, the embodiment of the present invention also provides a kind of electronic equipment, comprising: screen and the above-mentioned screen on screen
Curtain protective film, and the adhesion layer of screen protecting film fits with screen.Screen can be with flexible screen, since screen protecting film is with good
The ability of good water oxygen resistant invasion, thus be conducive to improve the service life of screen, improve the reliability of electronic equipment.
Another embodiment of the present invention also provides a kind of screen protecting film, the screen protecting film and previous reality which provides
The screen protecting film for applying example offer is roughly the same, the difference is that: TPU membrane is located at upper protective film and transparent suction in the embodiment
Between attached layer.Below with reference to attached drawing to another embodiment of the present invention provides TPU membrane be described in detail, with previous embodiment
Identical or corresponding part can refer to the corresponding description of previous embodiment, will not be described in detail below.Fig. 2 is that the present invention is another
The schematic diagram of the section structure for the screen protecting film that one embodiment provides.
With reference to Fig. 2, screen protecting film includes: transparent extraction layer 201, and transparent extraction layer 201 has the first face 11 and with the
11 the second opposite face 12 on one side is distributed in transparent extraction layer 201 suitable for adsorption moisture and/or wet oxygen absorption particle 211；On
Protective layer 202, on the first face 11 of transparent extraction layer 201；Adhesion layer 203, positioned at the second face 12 of transparent extraction layer 201
On, adhesion layer 203 is used for and fits, and adhesion layer 203 includes from film layer 213 and positioned at from the layer of silica gel in film layer 213
223。
In the present embodiment, screen protecting film further include: TPU membrane 204, and the setting of TPU membrane 204 is in up-protective layer 202 and thoroughly
Between bright adsorption layer 201, that is to say, that TPU membrane 204 is in contact with the first face 11 of transparent extraction layer 201.
Since TPU membrane 204 is between up-protective layer 202 and transparent extraction layer 201, when moisture or wet oxygen are via upper guarantor
For sheath 202 towards during the movement of transparent extraction layer 201, it is saturating that TPU membrane 204 can prevent moisture or wet oxygen from entering to a certain extent
Between bright adsorption layer 201, so that the amount of the moisture or wet oxygen that reach transparent extraction layer 201 reduces, be conducive to be further ensured that
The effect of 201 adsorption moisture of transparent extraction layer or wet oxygen.Also, compared with previous embodiment, transparent extraction in the present embodiment
Thickness that is thinner, thus being conducive to further reduction screen protecting film can be set in the thickness of layer 201.
Effect and thickness in relation to TPU membrane 204, can refer to the detailed description of previous embodiment, details are not described herein.
Correspondingly, the embodiment of the present invention also provides a kind of electronic equipment, comprising: screen and the above-mentioned screen on screen
Curtain protective film, and the adhesion layer of screen protecting film fits with screen.The screen can be flexible screen, since screen protecting film has
There is the ability of good water oxygen resistant invasion, thus be conducive to improve the service life of screen, improves the reliability of electronic equipment.
The embodiment of the present invention also provides a kind of for manufacturing the manufacturing method of above-mentioned screen protecting film, comprising: protects in offer
Sheath；Transparent extraction layer is formed on up-protective layer, transparent extraction layer has towards the first face of up-protective layer and with first
The second opposite face of face is distributed in transparent extraction layer suitable for adsorption moisture and/or wet oxygen absorption particle；Adhesion layer is formed, and
Adhesion layer is located on the second face of transparent extraction layer, and adhesion layer is used for bonding with screen.
It is described in detail below with reference to manufacturing method of the attached drawing to screen protecting film provided in this embodiment.Fig. 3 is extremely
Fig. 5 is the corresponding the schematic diagram of the section structure of each step of screen protection film manufacturing method provided in an embodiment of the present invention.
With reference to Fig. 3, up-protective layer 302 is provided；Transparent extraction layer 301, transparent extraction layer are formed on up-protective layer 302
301 have towards the first face and second face opposite with the first face of up-protective layer 302, are distributed in transparent extraction layer 302
Adsorb particle 311.
In the present embodiment, the forming material of transparent extraction layer 301 is optical cement, and absorption particle 311 is PI particle.At other
In embodiment, the forming material of transparent extraction layer may be optics of liquids glue, UV optical cement or blade coating type optical cement；Absorption
Particle may be PET particle or PEN particle.
The processing step for forming transparent extraction layer 301 includes: to prepare optical cement presoma；In optical cement presoma uniformly
Water oxygen adsorbent material is mixed, mixed solution is formed；It is coated with the mixed solution on up-protective layer 302, and is dried, shape
At transparent extraction layer 301.
Polycondensation occurs in mixed solution and forms absorption particle for water oxygen adsorbent material, contains oxygen-containing group official in the absorption particle
It can group.In the present embodiment, catalyst is also added in mixed solution, which is conducive to that water oxygen adsorbent material is promoted to contract
Combinate form is at absorption particle.Specifically, water oxygen adsorbent material can be PI (polyimides) material, and catalyst can be NMP (N- first
Base pyrrolidones) solution catalyst.
After forming transparent extraction layer 301, further includes: form TPU membrane 304 on transparent extraction layer 301.It is understood that
, in other embodiments, TPU membrane can also be first formed on up-protective layer, then forms transparent extraction in TPU membrane
Layer.
With reference to Fig. 4, adhesion layer 303 is formed.
In the present embodiment, the processing step for forming adhesion layer 303 includes: to provide from film layer 313；It is applied on from film layer 313
Cloth forms layer of silica gel 323.
With reference to Fig. 5, adhesion layer 303 is bonded adherency with TPU membrane 304, so that adhesion layer 303 is located at transparent extraction layer 301
The second face on, adhesion layer 303 with screen for fitting.
323 surface of layer of silica gel has viscosity, and layer of silica gel 323 and the adherency of TPU membrane 304 are got up using viscosity.
It should be noted that in other embodiments, when TPU membrane is between up-protective layer and transparent extraction layer, utilizing
Viscosity gets up layer of silica gel and the adherency of transparent extraction layer.
The manufacturing method of screen protecting film provided in this embodiment can be improved screen protecting film and the protection of screen made
With, avoid water oxygen intrusion screen in, improve the service life of screen.
It will be understood by those skilled in the art that the respective embodiments described above are to realize specific embodiments of the present invention,
And in practical applications, can to it, various changes can be made in the form and details, without departing from the spirit and scope of the present invention.
Anyone skilled in the art can be made respectively to change and modify, therefore this hair without departing from the spirit and scope of the present invention
Bright protection scope should be subject to claim restriction range.
Claims (10)
1. a kind of screen protecting film characterized by comprising
Transparent extraction layer, the transparent extraction layer have the first face and second face opposite with first face, the transparent extraction
The absorption particle for being suitable for absorbing moisture and/or wet oxygen is distributed in layer；
Up-protective layer, on the first face of the transparent extraction layer；
Adhesion layer, on the second face of the transparent extraction layer, the adhesion layer with screen for fitting.
2. screen protecting film as described in claim 1, which is characterized in that have oxygen-containing group functional group in the absorption particle；
Preferably, the absorption particle includes PI particle, PET particle or PEN particle.
3. screen protecting film as claimed in claim 1 or 2, which is characterized in that the forming material of the transparent extraction layer includes
Optical cement；Preferably, the transparent extraction layer with a thickness of 10 μm~30 μm.
4. screen protecting film as claimed in claim 1 or 2, which is characterized in that the absorption particle and the transparent extraction layer
Molar ratio be 0.25:1-0.5:1.
5. screen protecting film as described in claim 1, which is characterized in that further include: TPU membrane, the TPU membrane are arranged described
Between up-protective layer and the transparent extraction layer, alternatively, being arranged between the transparent extraction layer and the adhesion layer；It is preferred that
, the TPU membrane with a thickness of 120 μm -150 μm.
6. screen protecting film as described in claim 1, which is characterized in that the up-protective layer is the resistance to scraping coating of oil rub resistance；It is excellent
Choosing, the up-protective layer with a thickness of 5 μm -20 μm.
7. screen protecting film as described in claim 1, which is characterized in that the adhesion layer includes: from film layer and to be located at institute
It states from the layer of silica gel in film layer, and the layer of silica gel is located at the transparent extraction layer and described between film layer；Preferably, described
Layer of silica gel is the low removing layer of silica gel of high viscosity, and under the conditions of peel angle is 180 °, the peeling force of the layer of silica gel is more than or equal to
150N/mm and be less than or equal to 200N/mm；Preferably, the layer of silica gel with a thickness of 10 μm -20 μm.
8. a kind of electronic equipment characterized by comprising
Screen；
Such as the described in any item screen protecting films of claim 1-7, and the adhesion layer fits with the screen.
9. a kind of manufacturing method of screen protecting film characterized by comprising
Up-protective layer is provided；
Transparent extraction layer is formed on the up-protective layer, the transparent extraction layer has towards the first face of the up-protective layer
And second face opposite with first face, distribution is suitable for absorbing the absorption of moisture and/or wet oxygen in the transparent extraction layer
Particle；
Adhesion layer is formed, and the adhesion layer is located on the second face of the transparent extraction layer, the adhesion layer is used for and screen
It is bonding.
10. manufacturing method as claimed in claim 9, which is characterized in that the processing step for forming the transparent extraction layer includes:
Prepare optical cement presoma；Water oxygen adsorbent material is uniformly mixed in the optical cement presoma, forms mixed solution；Described
It is coated with the mixed solution on up-protective layer, and is dried, forms the transparent extraction layer；Preferably, also described
Catalyst is added in mixed solution, the catalyst is conducive to that the water oxygen adsorbent material generation polycondensation is made to form the absorption grain
Son.
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| CN201910694875.9A CN110499118A (en) | 2019-07-30 | 2019-07-30 | Screen protecting film and its manufacturing method, electronic equipment |
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