WO2024113897A1 - 保护膜、屏幕组件和电子设备 - Google Patents

保护膜、屏幕组件和电子设备 Download PDF

Info

Publication number
WO2024113897A1
WO2024113897A1 PCT/CN2023/108369 CN2023108369W WO2024113897A1 WO 2024113897 A1 WO2024113897 A1 WO 2024113897A1 CN 2023108369 W CN2023108369 W CN 2023108369W WO 2024113897 A1 WO2024113897 A1 WO 2024113897A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
protective film
impact
hole
resistant
Prior art date
Application number
PCT/CN2023/108369
Other languages
English (en)
French (fr)
Inventor
李健辉
陈晓晨
龙浩晖
肖甜
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2024113897A1 publication Critical patent/WO2024113897A1/zh

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/29—Laminated material
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B11/00—Filters or other obturators specially adapted for photographic purposes
    • G03B11/04—Hoods or caps for eliminating unwanted light from lenses, viewfinders or focusing aids
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/18—Telephone sets specially adapted for use in ships, mines, or other places exposed to adverse environment

Definitions

  • the utility model relates to the technical field of electronic equipment, in particular to a protective film, a screen assembly and an electronic equipment.
  • the present application provides a protective film to solve the technical problem in the prior art that the protective film causes the front camera to have low picture clarity.
  • the present application also provides a screen assembly and an electronic device.
  • the utility model provides a protective film for a screen assembly, the protective film comprising a laminated structure and a substrate layer, the laminated structure being laminated on the substrate layer along the thickness direction of the protective film, the laminated structure comprising at least one adhesive layer and at least one impact-resistant layer, the adhesive layer and the impact-resistant layer being alternately laminated, the adhesive layer and the impact-resistant layer both having a first surface and a second surface, the second surface of the adhesive layer being laminated and connected to the first surface of the impact-resistant layer, and the second surface of the impact-resistant layer being in contact with the substrate layer;
  • the laminated structure is provided with light-transmitting holes.
  • the protective film by providing light-transmitting holes on the laminated structure of the protective film, it is possible to prevent the impact-resistant layer or adhesive layer in the laminated structure from scattering light in the light-transmitting hole area, thereby reducing the haze in the area corresponding to the light-transmitting hole on the protective film. Since only the light-transmitting holes are provided in the laminated structure, the light-transmitting holes only penetrate the laminated structure and do not completely penetrate the protective film.
  • the protective film is attached to the screen assembly, the problem of dust accumulation in the area corresponding to the light-transmitting hole on the protective film is avoided, and the problem of glue overflow and white edges around the light-transmitting hole when the protective film is wiped with a dust-free cloth is also avoided.
  • the laminate structure includes an adhesive layer and an impact-resistant layer, the second surface of the adhesive layer is laminated and connected to the first surface of the impact-resistant layer, and the second surface of the impact-resistant layer is in contact with the substrate layer;
  • the light-transmitting hole penetrates the adhesive layer and/or the impact-resistant layer.
  • a first through hole is provided on the impact-resistant layer, and the first through hole passes through the first surface and the second surface of the impact-resistant layer;
  • a second through hole is provided on the adhesive layer, and the second through hole passes through the first surface of the adhesive layer and the second surface of the adhesive layer; the first through hole is coaxially connected with the second through hole to form the light-transmitting hole.
  • the shaft is connected, and when opening a through hole, the adhesive layer and the impact-resistant layer can be directly bonded together to perform the hole opening at one time, thereby simplifying the operation method.
  • the laminate structure includes a plurality of the adhesive layers and a plurality of the impact-resistant layers, the second surface of each of the adhesive layers is laminated and connected to the first surface of each of the impact-resistant layers, and the second surface of the impact-resistant layer is in contact with the substrate layer;
  • the light-transmitting hole penetrates at least one layer of the adhesive layer and/or at least one layer of the impact-resistant layer.
  • the laminated structure includes multiple adhesive layers and multiple impact-resistant layers, which can improve the impact resistance and extrusion resistance of the protective film.
  • the laminated structure includes multiple adhesive layers and multiple impact-resistant layers, which can improve the impact resistance and extrusion resistance of the protective film.
  • the light-transmitting hole penetrates at least one of the impact-resistant layers, and the light-transmitting hole is filled with the material of the adhesive layer.
  • the scattering of light by the anti-impact layer in the light-transmitting hole area can be eliminated, thereby reducing the haze of the light-transmitting hole area on the protective film.
  • the protective film further includes an anti-reflection layer, and along the thickness direction of the protective film, the anti-reflection layer is arranged on a side of the substrate layer away from the anti-impact layer.
  • the transmittance of the protective film to visible light can be increased, thereby improving the visual experience of the user.
  • the anti-reflection layer is made of a composite material of fluororesin and nano-silicon balls.
  • a composite material of fluororesin and nano-silicon balls is coated on the outer surface of the protective film to form an anti-reflection layer, which can make the surface of the protective film uneven, thereby increasing the light receiving area and producing diffuse reflection, thereby achieving the effect of reducing reflectivity and increasing transmittance.
  • the protective film further includes a hardening layer, and along the thickness direction of the protective film, the hardening layer is disposed between the substrate layer and the anti-reflection layer.
  • the anti-reflection layer can be supported.
  • the protective film is impacted by external force, the anti-reflection layer is not easily broken; and the adhesion of the anti-reflection layer can be improved, so that the anti-reflection layer is not easy to fall off.
  • the material of the hardened layer is a composite material of acrylic resin and hard material.
  • a composite material of acrylic resin and hard material is used as the hardening layer, which can achieve a hardening effect of the protective film.
  • the material of the substrate layer is any one of PET, PI and TPU.
  • the substrate layer is selected from any one of PET, PI and TPU, which can make the protective film have better flexibility and anti-bending ability.
  • the adhesive layer is made of OCA.
  • the transmittance of OCA is usually above 95%, the use of OCA as the bonding layer can make the protective film have a higher transmittance.
  • the impact-resistant layer is made of silicone or polyurethane material.
  • the impact-resistant layer is made of silica gel, which can make the protective film have better impact resistance and anti-extrusion performance.
  • the impact-resistant layer is made of polyurethane material, which can also make the protective film have better impact resistance and anti-extrusion performance.
  • the present application provides a screen assembly, including a cover plate, a display module, a front camera and the protective film as described above, wherein along the thickness direction of the screen assembly, the display module has a first side surface and a second side surface, and the first side surface The display module is arranged opposite to the second side surface, and a through hole penetrating the first side surface and the second side surface is provided on the display module, and the front camera is exposed from the display module through the through hole; the protective film is attached to the side of the cover plate away from the front camera;
  • the orthographic projection of the front camera on the cover plate falls within the orthographic projection of the light-transmitting hole on the cover plate.
  • the light-transmitting hole of the protective film has a lower haze.
  • the present application provides an electronic device, characterized in that it includes a shell and a screen assembly as described above, wherein the shell has an opening along the thickness direction of the electronic device, and the screen assembly is arranged at the opening of the shell to seal the opening of the shell.
  • a protective film with lower haze corresponding to the front camera area for the screen assembly and arranging the screen assembly in an electronic device on the one hand, it can meet the high-definition requirements of the front camera area on the screen assembly, and on the other hand, it can meet the display and photo-taking requirements of the electronic device.
  • the utility model can avoid the scattering of light by the impact-resistant layer or the adhesive layer in the area corresponding to the front camera by setting a light-transmitting hole in the laminated structure of the protective film, thereby reducing the haze in the area corresponding to the front camera on the protective film and reducing the impact of the protective film on the clarity of the front camera. Since only the light-transmitting hole is set in the laminated structure, the light-transmitting hole does not completely penetrate the protective film.
  • FIG1 is a schematic diagram of the structure of an electronic device provided by the present application.
  • FIG2 is a schematic diagram of a planar structure of a screen assembly of the electronic device shown in FIG1 ;
  • FIG3 is a schematic structural diagram of a first embodiment of a protective film of the screen assembly shown in FIG2 ;
  • FIG4 is a schematic diagram of the structure of the protective film shown in FIG3 used in a screen assembly
  • FIG5 a is a schematic structural diagram of a second embodiment of a protective film of the screen assembly shown in FIG2 ;
  • FIG5 b is a schematic structural diagram of a third embodiment of the protective film of the screen assembly shown in FIG2 ;
  • FIG6 is a schematic structural diagram of a fourth embodiment of a protective film of the screen assembly shown in FIG2 ;
  • FIG. 7 is a schematic diagram of the structure of the protective film shown in FIG. 6 used for a screen assembly.
  • FIG1 is a schematic diagram of the structure of an electronic device 1000 provided by the present application.
  • the present invention provides an electronic device 1000 , and specifically, the electronic device 1000 includes but is not limited to electronic products such as mobile phones, tablet computers, personal computers, and notebook computers. In the embodiment of the present invention, the electronic device 1000 is described as a mobile phone.
  • the width direction of the electronic device 1000 is defined as the X direction
  • the length direction is defined as the Y direction
  • the thickness direction is defined as the Z direction.
  • the X direction, the Y direction, and the Z direction are perpendicular to each other.
  • the electronic device 1000 includes a screen assembly 100 and a housing 200.
  • the housing 200 is provided along the thickness direction (Z-axis direction) of the electronic device.
  • the housing 200 is provided with an opening 201, and the screen assembly 100 is arranged at the opening 201 of the housing 200 to block the opening 201 of the housing 200.
  • the functional devices may include a socket, a speaker, a sensor, etc.
  • FIG. 2 is a schematic diagram of the planar structure of the screen assembly 100 of the electronic device 1000 shown in FIG. 1.
  • the screen assembly 100 includes a protective film 10, a cover plate 20, a display module 30 and a front camera 40.
  • the display module 30 and the front camera 40 are located on the same side of the cover plate 20, and the protective film 10 is attached to the side of the cover plate 20 away from the front camera 40.
  • the display module 30 has a first side 31 and a second side 32, and the first side 31 is arranged opposite to the second side 32.
  • a through hole 33 is provided on the upper edge of the display module 30, which passes through the first side 31 and the second side 32.
  • the front camera 40 exposes the display module 30 through the through hole 33. Opening a hole in the display module 30 to place the front camera 40 can reduce the space occupied by the front camera 40 in the display area of the screen assembly 100, thereby improving the screen ratio of the electronic device 1000.
  • the cover plate 20 covers the first side surface 31 of the display module 30 to protect the display module 30.
  • the protective film 10 is attached to and covers the surface of the cover plate 20 facing away from the display module 30. External light sequentially passes through the protective film 10, the cover plate 20 and the through hole 33 of the screen assembly 100 to enter the front camera 40.
  • the number of the front camera 40 can be multiple.
  • the protective film 10 includes a laminated structure and a substrate layer. Along the thickness direction of the protective film 10, the laminated structure is laminated on the substrate layer.
  • the laminated structure includes at least one adhesive layer and at least one impact-resistant layer.
  • the adhesive layer and the impact-resistant layer are alternately stacked.
  • the adhesive layer and the impact-resistant layer both have a first surface and a second surface.
  • the second surface of the adhesive layer is laminated and connected to the first surface of the impact-resistant layer, and the second surface of the impact-resistant layer is in contact with the substrate layer.
  • a light-transmitting hole (not shown) is provided on the laminated structure.
  • FIG. 3 is a schematic structural diagram of a first embodiment of the protective film 10 of the screen assembly 100 shown in FIG. 2 .
  • the protective film 10 includes an adhesive layer 12, an impact-resistant layer 11, a substrate layer 13, a hardening layer 14 and an anti-reflection layer 15, that is, the laminated structure includes an adhesive layer 12 and an impact-resistant layer 11.
  • the adhesive layer 12, the impact-resistant layer 11, the substrate layer 13, the hardening layer 14 and the anti-reflection layer 15 are stacked in sequence.
  • the adhesive layer 12 includes a first surface 121 and a second surface 122, and the first surface 121 and the second surface 122 are arranged oppositely.
  • the impact-resistant layer 11 includes a first surface 111 and a second surface 112, and the first surface 111 and the second surface 112 are arranged oppositely.
  • the second surface 122 of the adhesive layer 12 is stacked and connected with the first surface 111 of the impact-resistant layer 11, and the second surface 112 of the impact-resistant layer 11 is in contact with the substrate layer 13.
  • the first surface 121 of the adhesive layer 12 is connected to the surface of the cover plate 20.
  • the protective film 10 may not include the hardening layer 14 and the anti-reflection layer 15 , as long as the hardness and transmittance of the protective film 10 can meet the use requirements of the electronic device 1000 .
  • the first surface 121 of the adhesive layer 12 is in contact with the side of the cover plate 20 facing away from the front camera 40; when the protective film 10 is not attached to the cover plate 20, the first surface 121 of the adhesive layer 12 can also be covered with a retaining film to maintain the viscosity of the adhesive layer 12.
  • the adhesive layer 12 is used to attach the protective film 10 to the cover plate 20.
  • the adhesive layer 12 is OCA (Optically Clear Adhesive), and the material of OCA can be but is not limited to organic silicone, acrylic resin, unsaturated polyester, polyurethane, epoxy resin, etc. Since the transmittance of OCA is usually above 95%, the adhesive layer 12 uses OCA to make the protective film 10 have a higher transmittance. In other embodiments, the adhesive layer 12 can also be other double-sided adhesives.
  • the impact-resistant layer 11 is used to improve the impact resistance and extrusion resistance of the protective film 10.
  • the impact-resistant layer 11 is made of a silicone material with anti-compression deformation performance.
  • the silicone material has the characteristics of good elasticity and excellent shockproof performance, which can effectively improve the impact resistance and extrusion resistance of the protective film 10.
  • the impact-resistant layer 11 can also be a polyurethane energy-absorbing material or other types of energy-absorbing materials.
  • the substrate layer 13 is the supporting body of the protective film 10. In order to ensure that the protective film 10 does not affect the visual experience of the user, the substrate layer 13 needs to have a transmittance of at least 90%.
  • the material of the substrate layer 13 can be PET (Polyethylene
  • the substrate layer 13 is made of the above materials so that the protective film 10 has good flexibility and anti-bending ability.
  • the hardening layer 14 is used to support the anti-reflection layer 15.
  • the hardening layer 14 is a composite material of acrylic resin and hard materials.
  • the substrate layer 13 is a flexible material such as PET, PI or TPU
  • the substrate layer 13 has good flexibility and anti-bending ability, but when the anti-reflection layer 15 is directly coated or plated on the substrate layer 13, due to the low hardness of the substrate layer 13, the anti-reflection layer 15 cannot be well supported, and the anti-reflection layer 15 has a small adhesion on the substrate layer 13 and is easy to fall off.
  • the anti-reflection layer 15 By coating the composite material of acrylic resin and hard materials on the substrate layer 13 to form the hardening layer 14, due to the large hardness of the hardening layer 14, the anti-reflection layer 15 can be well supported, and the anti-reflection layer 15 has a strong adhesion on the hardening layer 14 and is not easy to fall off. In addition, since the hardening layer 14 supports the anti-reflection layer 15, when the protective film 10 is impacted by external force, the anti-reflection layer 15 is not easy to break, thereby improving the structural stability and service life of the anti-reflection layer 15.
  • the hardening layer 14 may also be a coating structure.
  • the hardening layer 14 may also be a hard film layer such as silicon nitride.
  • the anti-reflection layer 15 is used to improve the transmittance of the protective film 10 to visible light.
  • the anti-reflection layer 15 is a composite material of fluororesin and nano-silicon balls. By coating the composite material of fluororesin and nano-silicon balls on the hardening layer 14, the surface of the protective film 10 is made uneven, which not only increases the light receiving area, but also produces diffuse reflection, thereby achieving the effect of reducing reflectivity and increasing transmittance.
  • the anti-reflection layer 15 can also be a coating structure, a multi-layer polymer layer or a moth-eye film.
  • the coating structure can include at least one stack of a high refractive index layer/low refractive index layer.
  • the high refractive index layer/low refractive index layer refers to a high refractive index layer and a low refractive index layer stacked in sequence; the refractive index of the high refractive index layer is in the range of 1.9-2.7, and the refractive index of the low refractive index layer is in the range of 1.3-1.8.
  • the multi-layer polymer layer is similar to the coating structure, and the principle of achieving anti-reflection of the multi-layer polymer layer is similar to that of the coating structure.
  • the multi-layer polymer material with different refractive indices is formed into a stacked structure according to the principle of staggered distribution of high and low refractive indices to achieve the function of anti-reflection.
  • the moth-eye film utilizes the moth-eye effect, that is, when the sub-micrometer structure scale on the surface of the material is smaller than the wavelength of light, the light wave will not be able to recognize the microstructure.
  • the refractive index on the surface of the material changes continuously along the depth direction, which can reduce the reflection phenomenon caused by the sharp change of the refractive index, thereby achieving an anti-reflection effect.
  • the impact-resistant layer 11 is provided with a first through hole 113, which is circular and penetrates the first surface 111 and the second surface 112 of the impact-resistant layer 11;
  • the adhesive layer 12 is provided with a second through hole 123, which is circular and penetrates the first surface 121 and the second surface 122 of the adhesive layer 12.
  • the first through hole 113 is directly opposite to the second through hole 123;
  • the orthographic projection of the first through hole 113 on the substrate layer 13 and the orthographic projection of the second through hole 123 on the substrate layer 13 completely overlap, that is, the first through hole 113 and the second through hole 123 are coaxially connected to form a light-transmitting hole.
  • the first through hole 113 and the second through hole 123 are not limited to being circular, but may also be other shapes such as elliptical and racetrack-shaped.
  • FIG. 4 is a schematic diagram of the structure of the protective film 10 shown in FIG. 3 used for the screen assembly 100, wherein other structures except the protective film 10 are not distinguished by filling lines.
  • the protective film 10 provided in the first embodiment of the present application is subjected to pointed impact simulation, pointed extrusion simulation and haze test.
  • the test area is area A on the protective film 10 corresponding to the front camera 40, that is, the area corresponding to the light-transmitting hole on the protective film 10 is tested, and the test results are shown in Table 1.
  • a comparative protective film 10 is provided. Compared with the protective film 10 of the first embodiment, the difference of the comparative protective film 10 is that the first through hole 113 and the second through hole 123 are not provided on the impact-resistant layer 11 and the adhesive layer 12.
  • the pointed impact simulation is to attach the protective film 10 to the screen assembly 100, and use a stainless steel pointed tip to squeeze the surface of the protective film 10 away from the screen assembly 100 to simulate the strain of the screen assembly 100.
  • the pointed impact simulation is to The protective film 10 is attached to the screen assembly 100, and a stainless steel tip is dropped from a certain height onto the surface of the protective film 10 facing away from the screen assembly 100 to simulate the strain of the screen assembly 100.
  • the test and simulation conditions for the protective film 10 of the first embodiment and the comparative example are the same, including the light source of the haze test, the diameter of the tip, the extrusion force, and the height of the free fall.
  • the optical indicators and mechanical indicators of the protective film 10 of the first embodiment By comparing the optical indicators and mechanical indicators of the protective film 10 of the first embodiment and the comparative example, it can be found that: after the first through hole 113 and the second through hole 123 are opened in the anti-impact layer 11 and the adhesive layer 12, compared with the protective film 10 of the comparative example, the haze of the test area A of the protective film 10 provided in the first embodiment is reduced from 1.6% to 1.0%; for the pointed impact simulation, the strain of the screen assembly 100 corresponding to the test area A of the protective film 10 increases by 920ue; for the pointed extrusion simulation, the strain of the screen assembly 100 corresponding to the test area A of the protective film 10 increases by 31ue.
  • the impact-resistant layer 11 and the adhesive layer 12 can be prevented from scattering light in this area, thereby reducing the haze of the area corresponding to the front camera 40 on the protective film 10, and improving the clarity of the photo taken by the front camera 40.
  • the overall impact resistance and extrusion resistance of the protective film 10 decrease to a lesser extent.
  • the light-transmitting holes do not completely penetrate the protective film 10. Therefore, when the protective film 10 is used for the screen assembly 100, the problem of dust accumulation in the area corresponding to the through holes on the protective film 10 is avoided, and the problem of overflowing glue and white edges around the through holes when wiping the protective film 10 with a dust-free cloth is also avoided.
  • the manufacturing method of the protective film 10 provided in the first embodiment of the present application is as follows:
  • Step 1 coating a hardening layer 14 on the substrate layer 13, and coating an anti-reflection layer 15 on the side of the hardening layer 14 facing away from the substrate layer 13, to form a composite film layer 1;
  • Step 2 Laminating the impact-resistant layer 11 and the adhesive layer 12, punching holes in the areas of the impact-resistant layer 11 and the adhesive layer 12 corresponding to the front camera 40, so that a first through hole 113 and a second through hole 123 are formed in the impact-resistant layer 11 and the adhesive layer 12, respectively, to form a second composite film layer;
  • the impact-resistant layer 11 and the adhesive layer 12 may be laminated first, and then the area corresponding to the front camera 40 on the laminated film layer may be punched; or the areas corresponding to the front camera 40 on the impact-resistant layer 11 and the adhesive layer 12 may be punched respectively, and then the punched impact-resistant layer 11 and the adhesive layer 12 may be laminated.
  • the impact-resistant layer 11 and the solid adhesive layer 12 may be directly laminated, or the liquid adhesive layer 12 material may be applied to the impact-resistant layer 11 and then solidified into the solid adhesive layer 12. It is sufficient to make the adhesive layer 12 solid before punching holes.
  • the areas corresponding to the front camera 40 on the impact-resistant layer 11 and the solid adhesive layer 12 can be punched respectively, and then the impact-resistant layer 11 and the solid adhesive layer 12 can be laminated.
  • the first through hole 113 can be formed on the impact-resistant layer 11, and then the liquid adhesive layer 12 material can be applied to other areas of the impact-resistant layer 11 except the first through hole 113, and then the liquid adhesive layer 12 material can be cured, and only the second through hole 123 coaxial with the first through hole 113 needs to be formed on the solid adhesive layer 12.
  • the above-mentioned punching method can be punching by punching or by laser punching, and this application does not strictly limit the punching method.
  • Step 3 Lay the composite film layer 1 and the composite film layer 2 together so that the second surface 112 of the impact-resistant layer 11 contacts the side of the substrate layer 13 away from the hardening layer 14 , thereby obtaining the protective film 10 provided in the first embodiment.
  • the laminated structure in the protective film 10 may also include multiple adhesive layers 12 and multiple impact-resistant layers 11, and the adhesive layers 12 and the impact-resistant layers 11 are alternately stacked, that is, the second surface of each adhesive layer 12 is stacked and connected with the first surface of each impact-resistant layer 11, and the second surface 112 of the impact-resistant layer 11 is in contact with the substrate layer 13; it is only necessary that the hardness and transmittance of the protective film 10 can meet the use requirements of the electronic device 1000. Through holes can be opened in any one or more layers of the laminated structure on the protective film 10 to form light-transmitting holes.
  • FIG5a is a schematic diagram of the structure of the second embodiment of the protective film of the screen assembly shown in FIG2.
  • the laminated structure includes an impact-resistant layer 11 and an adhesive layer 12, and only a first through hole 113 is set on the impact-resistant layer 11 in a region corresponding to the front camera 40 to form a light-transmitting hole.
  • FIG5b is a schematic diagram of the structure of the third embodiment of the protective film of the screen assembly shown in FIG2.
  • the laminated structure includes an impact-resistant layer 11 and an adhesive layer 12, and only a second through hole 123 is set on the adhesive layer 12 in a region corresponding to the front camera 40 to form a light-transmitting hole.
  • FIG. 6 is a schematic structural diagram of a fourth embodiment of the protective film of the screen assembly shown in FIG. 2 .
  • the protective film 10 includes an adhesive layer 12, an impact-resistant layer 11, a substrate layer 13, a hardening layer 14 and an anti-reflection layer 15, that is, the laminated structure includes an adhesive layer 12 and an impact-resistant layer 11.
  • the relative positions, optional materials and formation methods of the adhesive layer 12, the impact-resistant layer 11, the substrate layer 13, the hardening layer 14 and the anti-reflection layer 15 are the same as those in the first embodiment, and will not be described in detail here.
  • the impact-resistant layer 11 is provided with a first through hole 113, which is circular and passes through the first surface 111 and the second surface 112 of the impact-resistant layer 11.
  • the first through hole 113 is filled with the adhesive layer 12 material.
  • the first through hole 113 is a light-transmitting hole.
  • the first through hole 113 is not limited to a circular shape, and may also be an elliptical shape, a racetrack shape, or other shapes.
  • FIG. 7 is a schematic diagram of the structure of the protective film 10 shown in FIG. 6 used for the screen assembly 100, in which other structures except the protective film 10 are not distinguished by filling lines.
  • the protective film 10 is attached to the cover plate 20 through the adhesive layer 12, along the thickness direction of the protective film 10 (Z-axis direction), the orthographic projection of the front camera 40 on the cover plate 20 falls within the orthographic projection of the first through hole 113 on the cover plate 20, that is, the first through hole 113 is located in the area on the impact-resistant layer 11 corresponding to the front camera 40.
  • the protective film 10 provided in the fourth embodiment of the present application is subjected to a pointed impact simulation, a pointed extrusion simulation and a haze test.
  • the test area is the area B on the protective film 10 corresponding to the front camera 40, that is, the area corresponding to the first through hole 113 (light-transmitting hole) on the protective film 10 is tested, and the test results are shown in Table 2.
  • a comparative protective film 10 is provided. Compared with the protective film 10 of the fourth embodiment, the difference of the comparative protective film 10 is that the first through hole 113 is not provided on the impact-resistant layer 11. It should be noted that in this embodiment, the test and simulation conditions of the pointed impact simulation, the pointed extrusion simulation and the haze test are the same as those in the first embodiment.
  • the optical indicators and mechanical indicators of the protective film 10 of the fourth embodiment By comparing the optical indicators and mechanical indicators of the protective film 10 of the fourth embodiment and the comparative example, it can be found that: after the first through hole 113 (light-transmitting hole) is opened in the anti-impact layer 11 and the adhesive layer 12 material is filled in the first through hole 113 (light-transmitting hole), compared with the protective film 10 of the comparative example, the haze of the test area B of the protective film 10 is reduced from 1.6% to 0.6%; for the pointed impact simulation, the strain of the screen assembly 100 corresponding to the test area B of the protective film 10 increases by 274ue; for the pointed extrusion simulation, the strain of the screen assembly 100 corresponding to the test area B of the protective film 10 increases by 9ue.
  • the scattering of light by the impact-resistant layer 11 in the area can be eliminated, and at the same time, the base
  • the interface between the material layer 13 and the adhesive layer 12 has a small scattering effect on light, so the haze of the area corresponding to the front camera 40 on the protective film 10 can be reduced, and the clarity of the photo taken by the front camera 40 can be improved.
  • the adhesive layer 12, the base material layer 13, the hardening layer 14 and the anti-reflection layer 15 are retained intact, the first through hole 113 on the impact-resistant layer 11 is filled with the adhesive layer 12 material, and the impact-resistant layer 11 material around the first through hole 113 on the impact-resistant layer 11 is still retained, the overall impact resistance and extrusion resistance of the protective film 10 decrease less.
  • the light-transmitting hole does not completely penetrate the protective film 10. Therefore, when the protective film 10 is used for the screen assembly 100, the problem of dust accumulation in the area corresponding to the light-transmitting hole on the protective film 10 is avoided, and the problem of overflowing glue and white edges around the light-transmitting hole when wiping the protective film 10 with a dust-free cloth is also avoided.
  • the manufacturing method of the protective film 10 provided in the fourth embodiment of the present application is as follows:
  • Step 1 coating a hardening layer 14 on the substrate layer 13, and coating an anti-reflection layer 15 on the side of the hardening layer 14 facing away from the substrate layer 13, to form a composite film layer 1;
  • Step 2 punching a hole in the area of the anti-impact layer 11 corresponding to the front camera 40 to form a first through hole 113 on the anti-impact layer 11, laminating the anti-impact layer 11 with the composite film layer 1, so that the second surface 112 of the anti-impact layer 11 is in contact with the side of the substrate layer 13 away from the hardening layer 14, to form a composite film layer 3;
  • the liquid anti-impact layer 11 material may be coated on the release film first, and after the liquid anti-impact layer 11 material is solidified, holes may be punched in the composite film layer of the anti-impact layer 11 and the release film, and then the composite film layer is laminated together, and the release film is torn off; or holes may be directly punched in the solid anti-impact layer 11, and then the anti-impact layer 11 is laminated together with the composite film layer.
  • Step 3 Fill the first through holes 113 on the impact-resistant layer 11 with the liquid adhesive layer 12 material and solidify it to form an adhesive layer 12 on the first surface 111 of the impact-resistant layer 11, thereby obtaining the protective film provided in the fourth embodiment.
  • a layer of liquid adhesive layer 12 material with a uniform thickness is continuously coated on the first surface 111 of the impact-resistant layer 11, and then the liquid adhesive layer 12 material in the first through hole 113 and on the first surface 111 is solidified; or the liquid adhesive layer 12 material in the first through hole 113 is solidified, and then the solid adhesive layer 12 is attached to the first surface 111 of the impact-resistant layer 11.
  • the above-mentioned punching method can be punching by punching or by laser punching, and the present application does not strictly limit the punching method.
  • the laminated structure in the protective film 10 may also include multiple adhesive layers 12 and multiple impact-resistant layers 11, the adhesive layers 12 and the impact-resistant layers 11 are alternately stacked, the second surface of each adhesive layer 12 is stacked and connected to the first surface of each impact-resistant layer 11, and the second surface of the impact-resistant layer 11 is in contact with the substrate layer 13; it is only necessary that the hardness and transmittance of the protective film 10 can meet the use requirements of the electronic device 1000.
  • Through holes can be opened in any one or more layers of the laminated structure on the protective film 10 to form light-transmitting holes, and the adhesive layer 12 material can be filled in the light-transmitting holes.
  • the protective film 10 provided in the embodiment of the present application is applied to electronic devices such as mobile phones. Since the area corresponding to the front camera 40 on the protective film 10 has a low haze, the clarity of the photos taken with the front camera 40 can be guaranteed; and the area corresponding to the front camera 40 on the protective film 10 has good impact resistance and extrusion resistance, so the protective film 10 can protect the front camera 40. Since the area corresponding to the front camera 40 on the protective film 10 is not completely perforated, the problem of dust accumulation at the front camera 40 is avoided, and the problem of glue overflow and white edges when wiping the hole area with a dust-free cloth is also avoided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Laminated Bodies (AREA)

Abstract

提供一种保护膜、屏幕组件和电子设备。其中，保护膜包括叠层结构和基材层，沿保护膜厚度方向，叠层结构层叠于基材层，叠层结构包括至少一个粘接层和至少一个抗冲击层，粘接层和抗冲击层交替叠置，粘接层和抗冲击层均具有第一表面和第二表面，粘接层的第二表面与抗冲击层的第一表面层叠并连接，抗冲击层的第二表面与基材层接触；叠层结构上设有透光孔通过在保护膜的叠层结构上设置透光孔，可以降低保护膜上对应透光孔区域的雾度，从而解决现有技术中的保护膜使前置摄像头拍照清晰度较低的技术问题。

Description

保护膜、屏幕组件和电子设备 技术领域
本实用新型涉及电子设备技术领域，尤其涉及一种保护膜、屏幕组件和电子设备。
背景技术
随着科技的发展，手机、电脑已经成为人们日常生活中必不可少的产品。目前，市面上的一些手机、电脑可以在显示屏的上方中部设置前置摄像头，此类型的手机、电脑可以通过前置摄像头进行拍照和视频拍摄。保护膜可以对手机、电脑的显示屏起到很好的保护作用，通常也会遮盖前置摄像头。但保护膜的雾度通常较高，会影响使用前置摄像头拍摄出来的照片的清晰度，特别是在逆光拍摄下，可能会使照片清晰度较低。
实用新型内容
本申请提供一种保护膜，以解决现有技术中的保护膜使前置摄像头拍照清晰度较低的技术问题。
本申请还提供一种屏幕组件和电子设备。
第一方面，本实用新型提供一种保护膜，用于屏幕组件，所述保护膜包括叠层结构和基材层，沿所述保护膜厚度方向，所述叠层结构层叠于所述基材层，所述叠层结构包括至少一个粘接层和至少一个抗冲击层，所述粘接层与所述抗冲击层交替叠置，所述粘接层和所述抗冲击层均具有第一表面和第二表面，所述粘接层的第二表面与所述抗冲击层的第一表面层叠并连接，所述抗冲击层的第二表面与所述基材层接触；
所述叠层结构上设有透光孔。
本实施例中，通过在保护膜的叠层结构上设置透光孔，可以避免叠层结构中的抗冲击层或粘接层在透光孔区域对光产生散射，从而降低保护膜上对应透光孔区域的雾度。由于只对叠层结构开设透光孔，透光孔只贯穿叠层结构，未完全贯穿保护膜，当保护膜贴合于屏幕组件时，避免了保护膜上对应透光孔的区域积灰的问题，也避免了用无尘布擦拭保护膜时透光孔周围出现溢胶和白边的问题。
一种可能的实施方式中，所述叠层结构包括一个所述粘接层和一个所述抗冲击层，所述粘接层的第二表面与所述抗冲击层的第一表面层叠并连接，所述抗冲击层的第二表面与所述基材层接触；
所述透光孔贯穿所述粘接层和/或所述抗冲击层。
本实施例中，通过在保护膜的粘接层和/或抗冲击层上开设透光孔，可以避免粘接层和/或抗冲击层在透光孔区域对光产生散射，从而降低保护膜上对应透光孔区域的雾度。
一种可能的实施方式中，所述抗冲击层上设有第一通孔，所述第一通孔贯穿所述抗冲击层的第一表面和第二表面，所述粘接层上设有第二通孔，所述第二通孔贯穿所述粘接层的第一表面和所述粘接层的第二表面，所述第一通孔与所述第二通孔同轴连通以形成所述透光孔。
本实施例中，通过同时分别在抗冲击层和粘接层上设置第一通孔和第二通孔，并使第一通孔和第二通孔同轴连通形成透光孔，可以避免粘接层和抗冲击层在第一通孔和第二通孔区域对光产生散射，从而降低保护膜上对应该重合区域的雾度。并且，第一通孔和第二通孔同 轴连通，可以在开设通孔时，直接将粘接层与抗冲击层贴合后进行一次开孔，简化操作方法。
一种可能的实施方式中，所述叠层结构包括多个所述粘接层和多个所述抗冲击层，每一所述粘接层的第二表面与每一所述抗冲击层的第一表面层叠并连接，与所述基材层接触的为所述抗冲击层的第二表面；
所述透光孔贯穿至少一层所述粘接层和/或至少一层所述抗冲击层。
本实施例中，叠层结构包括多个粘接层和多个抗冲击层，可以提高保护膜的抗冲击性能和抗挤压性能。通过在至少一层粘接层和/或至少一层抗冲击层上设置通孔以形成透光孔，可以降低保护膜上对应透光孔区域的雾度。
一种可能的实施方式中，所述透光孔贯穿至少一个所述抗冲击层，所述透光孔内填充有所述粘接层的材料。
本实施例中，通过使透光孔贯穿抗冲击层，并且在透光孔内填充粘接层材料，可以消除抗冲击层在透光孔区域对光的散射，因此，可以降低保护膜上对应透光孔区域的雾度。
一种可能的实施方式中，所述保护膜还包括减反层，沿所述保护膜厚度方向，所述减反层设于所述基材层背离所述抗冲击层的一侧。
本实施例中，通过在保护膜的外表面设置减反层，可以提高保护膜对可见光的透过率，进而提高用户的视觉体验。
一种可能的实施方式中，所述减反层的材质为氟树脂和纳米硅球的复合材料。
本实施例中，将氟树脂和纳米硅球的复合材料涂布在保护膜的外表面形成减反层，可以使保护膜表面凹凸不平，既增加了受光面积，同时产生漫反射，从而达到反射率降低、增加透过率的效果。
一种可能的实施方式中，所述保护膜还包括硬化层，沿所述保护膜厚度方向，所述硬化层设于所述基材层和所述减反层之间。
本实施例中，通过在减反层和基材层之间设置一层硬化层，可以对减反层起支撑作用，当保护膜受到外力冲击时，减反层不易破碎；并且还能提高减反层的附着力，使减反层不易脱落。
一种可能的实施方式中，所述硬化层的材质为丙烯酸树脂和硬质材料的复合材料。
本实施例中，采用丙烯酸树脂和硬质材料的复合材料作为硬化层，能够实现保护膜的硬化效果。
一种可能的实施方式中，所述基材层的材质为PET、PI与TPU中的任意一种。
本实施例中，基材层选用PET、PI与TPU中的任意一种，可以使保护膜具有较好的柔性和抗弯折能力。
一种可能的实施方式中，所述粘接层的材质为OCA。
本实施例中，由于OCA的透过率通常为95％以上，因此，粘接层选用OCA可以使保护膜有较高的透过率。
一种可能的实施方式中，所述抗冲击层的材质为硅胶或聚氨酯类材料。
本实施中，由于硅胶具有弹性好、防震性能优的特点，因此，抗冲击层选用硅胶可以使保护膜有较好的抗冲击和抗挤压性能。此外，抗冲击层采用聚氨酯类材料，也可以使保护膜有较好的抗冲击和抗挤压性能。
第二方面，本申请提供一种屏幕组件，包括盖板、显示模组、前置摄像头和如上所述的保护膜，沿所述屏幕组件厚度方向，所述显示模组具有第一侧面和第二侧面，所述第一侧面 和所述第二侧面相对设置，所述显示模组上设有贯穿所述第一侧面和所述第二侧面的通孔，所述前置摄像头通过所述通孔露出所述显示模组；所述保护膜贴合于所述盖板背离所述前置摄像头的侧面；
沿所述屏幕组件厚度方向，所述前置摄像头在所述盖板上的正投影落入所述透光孔在所述盖板上的正投影内。
本实施例中，保护膜的透光孔处具有较低的雾度，通过将保护膜贴合于屏幕组件的盖板并使透光孔与前置摄像头对应，光在通过保护膜进入前置摄像头时，保护膜上对应透光孔的区域对光的散射较少，因而，可以提高前置摄像头拍照的清晰度。
第三方面，本申请提供一种电子设备，其特征在于，包括壳体和如上所述的屏幕组件，沿所述电子设备厚度方向，所述壳体开设有开口，所述屏幕组件设于所述壳体的开口处以封堵所述壳体的开口。
本实施例中，通过将对应前置摄像头区域具有较低雾度的保护膜用于屏幕组件，并将该屏幕组件设于电子设备，一方面能够满足屏幕组件上对应前置摄像头区域的高清晰度需求，另一方面能满足电子设备的显示和拍照需求。
综上，本实用新型通过在保护膜的叠层结构上对应前置摄像头的区域设置透光孔，可以避免抗冲击层或粘接层在该区域对光产生散射，从而降低保护膜上对应前置摄像头区域的雾度，降低保护膜对前置摄像头拍照清晰度的影响。由于只对叠层结构开设透光孔，透光孔未完全贯穿保护膜，当保护膜贴合于屏幕组件时，避免了保护膜上对应透光孔的区域积灰的问题，也避免了用无尘布擦拭保护膜时透光孔周围出现溢胶和白边的问题。
附图说明
为了更清楚地说明本实用新型实施例中的技术方案，下面将对本实用新型实施例中所需要使用的附图进行说明。
图1是本申请提供的电子设备的结构示意图；
图2是图1所示电子设备的屏幕组件的平面结构示意图；
图3是图2所示屏幕组件的保护膜的第一实施例的结构示意图；
图4是图3所示保护膜用于屏幕组件的结构示意图；
图5a是图2所示屏幕组件的保护膜的第二实施例的结构示意图；
图5b是图2所示屏幕组件的保护膜的第三实施例的结构示意图；
图6是图2所示屏幕组件的保护膜的第四实施例的结构示意图；
图7是图6所示保护膜用于屏幕组件的结构示意图。
具体实施方式
下面结合本实用新型实施例中的附图对本实用新型实施例进行描述。
请参阅图1，图1是本申请提供的电子设备1000的结构示意图。本实用新型提供一种电子设备1000，具体的，电子设备1000包括但不限于手机、平板电脑、个人计算机、笔记本电脑等电子产品。本实用新型实施例中，以电子设备1000为手机为例进行说明。
为了便于描述，将电子设备1000的宽度方向定义为X方向，长度方向定义为Y方向，厚度方向定义为Z方向。X方向、Y方向和Z方向两两相互垂直。
电子设备1000包括屏幕组件100和壳体200，沿电子设备厚度方向(Z轴方向)，壳体 200开设有开口201，屏幕组件100设于壳体200开口201处以封堵壳体200的开口201。应理解，在壳体200中可以设置有电子设备的其他结构，例如，电路板、电池以及功能器件等。其中，功能器件可以包括插座、扬声器、传感器等。
请参阅图2，图2是图1所示电子设备1000的屏幕组件100的平面结构示意图。本实施例中，屏幕组件100包括保护膜10、盖板20、显示模组30和前置摄像头40。显示模组30和前置摄像头40位于盖板20的同一侧，保护膜10贴合于盖板20背离前置摄像头40的侧面。沿屏幕组件100厚度方向(Z轴方向)，显示模组30具有第一侧面31和第二侧面32，第一侧面31与第二侧面32相对设置。显示模组30上部边缘设有贯穿第一侧面31和第二侧面32的通孔33。前置摄像头40通过通孔33露出显示模组30。在显示模组30上开孔以放置前置摄像头40，可以降低前置摄像头40在屏幕组件100的显示区域占用的空间，提高了电子设备1000的屏占比。盖板20盖于显示模组30第一侧面31上，用于保护显示模组30。保护膜10贴合并覆盖所述盖板20背向显示模组30的表面。外界光线依次透过屏幕组件100的保护膜10、盖板20以及通孔33进入前置摄像头40。在其他一些实施例中，前置摄像头40的数量可以为多个。
保护膜10包括叠层结构和基材层，沿保护膜10厚度方向，叠层结构层叠于基材层，叠层结构包括至少一个粘接层和至少一个抗冲击层，粘接层和抗冲击层交替叠置，粘接层和抗冲击层均具有第一表面和第二表面，粘接层的第二表面与抗冲击层的第一表面层叠并连接，抗冲击层的第二表面与基材层接触；叠层结构上设有透光孔(图未示)。
请参阅图3，图3是图2所示屏幕组件100的保护膜10的第一实施例的结构示意图。
保护膜10包括粘接层12、抗冲击层11、基材层13、硬化层14和减反层15，即叠层结构包括一个粘接层12和一个抗冲击层11。沿保护膜10厚度方向(Z轴方向)，粘接层12、抗冲击层11、基材层13、硬化层14和减反层15依次层叠设置。粘接层12包括第一表面121和第二表面122，第一表面121和第二表面122相对设置。抗冲击层11包括第一表面111和第二表面112，第一表面111和第二表面112相对设置。粘接层12的第二表面122与抗冲击层11的第一表面111层叠并连接，抗冲击层11的第二表面112与基材层13接触。粘接层12的第一表面121与盖板20的表面连接。在其他实施例中，保护膜10也可以不包括硬化层14和减反层15，只需保护膜10的硬度和透过率能够满足电子设备1000的使用需求即可。
需要说明的是，当保护膜10贴合于盖板20时，粘接层12的第一表面121与盖板20背离前置摄像头40的侧面接触；当保护膜10未贴合于盖板20时，粘接层12的第一表面121还可以覆盖一层保持膜，以保持粘接层12的粘性。
粘接层12用于将保护膜10贴合于盖板20。具体的，粘接层12为OCA(Optically Clear Adhesive，光学胶)，OCA的材质可以为但不限于为有机硅胶、丙烯酸型树脂及不饱和聚酯、聚氨酯、环氧树脂等。由于OCA的透过率通常为95％以上，粘接层12选用OCA可以使保护膜10有较高的透过率。在其他实施例中，粘接层12也可以是其他双面胶。
抗冲击层11用于提高保护膜10的抗冲击性能和抗挤压性能。具体的，抗冲击层11由具有抗压缩变形性能的硅胶材质制成。硅胶材质具有弹性好、防震性能优的特点，可以有效提高保护膜10的抗冲击和抗挤压性能。在其他实施例中，抗冲击层11还可以是聚氨酯类吸能材料或其他种类吸能材料。
基材层13是保护膜10的支撑主体。为了使保护膜10不影响用户的视觉体验，基材层13需要具有至少90％的透过率。具体的，基材层13的材质可以为PET(Polyethylene  terephthalate，聚对苯二甲酸乙二酯)、PI(Polyimide，聚酰亚胺)以及TPU(Thermoplastic polyurethane，热塑性聚氨酯)等柔性透明材料。基材层13选用上述材质可以使保护膜10具有较好的柔性和抗弯折能力。
硬化层14用于对减反层15进行支撑。具体的，硬化层14为丙烯酸树脂和硬质材料的复合材料。当基材层13为PET、PI或TPU等柔性材料时，基材层13具有较好的柔性和抗弯折能力，但是当在基材层13上直接涂布或镀设减反层15时，由于基材层13的硬度较低，不能很好的对减反层15进行支撑，并且减反层15在基材层13上的附着力较小，容易脱落。通过将丙烯酸树脂和硬质材料的复合材料涂布在基材层13上形成硬化层14，由于硬化层14的硬度较大，因此可以很好的对减反层15进行支撑，并且减反层15在硬化层14上的附着力强，不容易脱落。另外，由于硬化层14对减反层15有支撑作用，那么当保护膜10受到外力冲击时，减反层15也不容易破碎，从而提升了减反层15的结构稳定性和使用寿命。在其他实施例中，硬化层14也可以是镀膜结构，例如，硬化层14也可以是氮化硅等硬质膜层。
减反层15用于提高保护膜10对可见光的透过率。具体的，减反层15为氟树脂和纳米硅球的复合材料，通过将氟树脂和纳米硅球的复合材料涂布在硬化层14上，使保护膜10表面凹凸不平，既增加了受光面积，同时产生漫反射，从而达到反射率降低、增加透过率的效果。在其他实施例中，减反层15也可以是镀膜结构、多层聚合物层或蛾眼膜中的一种。例如，镀膜结构可以包括至少一个高折射率层/低折射率层的叠层。其中，高折射率层/低折射率层是指按照高折射率层、低折射率层依次叠加形成；高折射率层的折射率在1.9-2.7的范围内，低折射率层的折射率在1.3-1.8的范围内。而多层聚合物层类似镀膜结构，多层聚合物层与镀膜结构实现减反射的原理类似，多层折射率不同的聚合物材料按照高、低折射率交错分布的原理构成叠层结构，实现减反射的功能。蛾眼膜利用蛾眼效应，即，当材料表面次微米结构尺度小于光波长时，将使得光波无法辨认出该微结构，于是在材料表面的折射率沿深度方向呈连续变化，可减小折射率急剧变化所造成的反射现象，从而实现增透效果。
本实施例中，抗冲击层11设有第一通孔113，第一通孔113为圆形，第一通孔113贯穿抗冲击层11的第一表面111和第二表面112；粘接层12设有第二通孔123，第二通孔123为圆形，第二通孔123贯穿粘接层12的第一表面121和第二表面122。沿保护膜10厚度方向(Z轴方向)，第一通孔113正对第二通孔123；第一通孔113在基材层13上的正投影与第二通孔123在基材层13上的正投影完全重合，即，第一通孔113和第二通孔123同轴连通，形成透光孔。在其他实施例中，第一通孔113和第二通孔123不限于为圆形，也可以是椭圆形、跑道形等其他形状。
请参阅图4，图4是图3所示保护膜10用于屏幕组件100的结构示意图，其中除了保护膜10的其他结构未进行填充线条进行区分。当保护膜10通过粘接层12贴合于盖板20时，前置摄像头40在基材层13上的正投影落入第一通孔113与第二通孔123在基材层13上的正投影内，即，前置摄像头40在基材层13上的正投影落入透光孔在基材层13上的正投影内。
对本申请第一实施例提供的保护膜10进行尖头冲击仿真、尖头挤压仿真和雾度测试，具体的，测试区域是保护膜10上对应前置摄像头40的区域A，即，对保护膜10上对应透光孔的区域进行测试，测试结果如表1所示。提供对比例的保护膜10，与第一实施例的保护膜10相比，对比例的保护膜10的区别仅在于：抗冲击层11和粘接层12上未开设第一通孔113和第二通孔123。需要说明的是，尖头冲击仿真是将保护膜10贴到屏幕组件100上，用不锈钢尖头挤压保护膜10背离屏幕组件100的表面，仿真屏幕组件100的应变。尖头冲击仿真是将 保护膜10贴到屏幕组件100上，将不锈钢尖头从一定高度自由落体砸到保护膜10背离屏幕组件100的表面，仿真屏幕组件100的应变。本申请中，针对第一实施例和对比例的保护膜10的测试和仿真条件相同，包括雾度测试的光源、尖头的直径、挤压力和自由落体的高度等。
表1：第一实施例和对比例的保护膜的光学指标和力学指标
对比第一实施例和对比例的保护膜10的光学指标和力学指标，可以发现：对抗冲击层11和粘接层12开设第一通孔113和第二通孔123后，相较于对比例的保护膜10，第一实施例中提供的保护膜10的测试区域A的雾度从1.6％降低到1.0％；对尖头冲击仿真，保护膜10的测试区域A对应的屏幕组件100的应变增大920ue；对尖头挤压仿真，保护膜10的测试区域A对应的屏幕组件100的应变增大31ue。
可以理解的是，通过在抗冲击层11和粘接层12上对应前置摄像头40的区域分别开设第一通孔113和第二通孔123，并使第一通孔113和第二通孔123同轴连通形成透光孔，可以避免抗冲击层11和粘接层12在该区域对光产生散射，从而降低保护膜10上对应前置摄像头40区域的雾度，提高前置摄像头40的拍照清晰度。同时由于保留了完整的基材层13、硬化层14和减反层15，且抗冲击层11上第一通孔113周围的抗冲击层11材料仍保留，保护膜10整体的抗冲击性能和抗挤压性能下降幅度较小。
本实施例中，由于只对抗冲击层11和粘接层12上开设通孔以形成透光孔，透光孔未完全贯穿保护膜10，因而，当保护膜10用于屏幕组件100时，避免了保护膜10上对应通孔的区域积灰的问题，也避免了用无尘布擦拭保护膜10时通孔周围出现溢胶和白边的问题。
本申请第一实施例提供的保护膜10的制作方法如下：
步骤1：将硬化层14涂布在基材层13上，将减反层15涂布在硬化层14背离基材层13的侧面上，形成复合膜层一；
步骤2：将抗冲击层11与粘接层12贴合，对抗冲击层11和粘接层12上对应前置摄像头40的区域打孔，使抗冲击层11和粘接层12上分别形成第一通孔113和第二通孔123，形成复合膜层二；
具体的，可以是先将抗冲击层11与粘接层12贴合，再对贴合形成的膜层上对应前置摄像头40的区域打孔；也可以是先分别对抗冲击层11和粘接层12上对应前置摄像头40的区域打孔，再将打孔后的抗冲击层11和粘接层12贴合。对于先贴合后打孔的方式，可以是将抗冲击层11与固态粘接层12直接贴合，也可以是将液态粘接层12材料涂布于抗冲击层11后再固化成固态粘接层12，只需在打孔前使粘接层12为固态即可。对于先打孔后贴合的方式，可以先分别对抗冲击层11和固态粘接层12上对应前置摄像头40的区域打孔，再将抗冲击层11和固态粘接层12贴合，也可以先在抗冲击层11上形成第一通孔113，再在抗冲击层11上除第一通孔113以外的其他区域涂布液态粘接层12材料，之后再对液态粘接层12材料进行固化，只需在固态粘接层12上形成与第一通孔113同轴的第二通孔123即可。上述打孔的方式可以是冲裁打孔，也可以是激光打孔，本申请不对打孔方式进行严格限制。
步骤3：将复合膜层一与复合膜层二贴合，使抗冲击层11的第二表面112与基材层13背离硬化层14的一侧接触，得到第一实施例提供的保护膜10。
需要说明的是，保护膜10中的叠层结构也可以包括多个粘接层12和多个抗冲击层11，粘接层12和抗冲击层11交替叠置，即，每一粘接层12的第二表面与每一抗冲击层11的第一表面层叠并连接，与基材层13接触的为抗冲击层11的第二表面112；只需保护膜10的硬度和透过率能够满足电子设备1000的使用需求即可。可以在保护膜10上叠层结构中的任意一层或多层开设通孔以形成透光孔。
请参阅图5a，图5a是图2所示屏幕组件的保护膜的第二实施例的结构示意图，第二实施例中，叠层结构包括一个抗冲击层11和一个粘接层12，仅在抗冲击层11上对应前置摄像头40的区域设置第一通孔113以形成透光孔。如图5b所示，图5b是图2所示屏幕组件的保护膜的第三实施例的结构示意图。第三实施例中，叠层结构包括一个抗冲击层11和一个粘接层12，仅在粘接层12上对应前置摄像头40的区域设置第二通孔123以形成透光孔。
请参阅图6，图6是图2所示屏幕组件的保护膜的第四实施例的结构示意图。
本实施例中，保护膜10包括粘接层12、抗冲击层11、基材层13、硬化层14和减反层15，即叠层结构包括一个粘接层12和一个抗冲击层11。粘接层12、抗冲击层11、基材层13、硬化层14和减反层15之间的相对位置、可选材质与形成方式均与第一实施例相同，在此不做过多赘述。
抗冲击层11设有第一通孔113，第一通孔113为圆形，第一通孔113贯穿抗冲击层11的第一表面111和第二表面112。第一通孔113内填充粘接层12材料。第一通孔113为透光孔。在其他实施例中，第一通孔113不限于为圆形，也可以是椭圆形、跑道形等其他形状。
请参阅图7，图7是图6所示保护膜10用于屏幕组件100的结构示意图，其中除了保护膜10的其他结构未进行填充线条进行区分。当保护膜10通过粘接层12贴合于盖板20时，沿保护膜10厚度方向(Z轴方向)，前置摄像头40在盖板20上的正投影落入第一通孔113在盖板20上的正投影内，即第一通孔113位于抗冲击层11上对应前置摄像头40的区域。
对本申请第四实施例提供的保护膜10进行尖头冲击仿真、尖头挤压仿真和雾度测试，具体的，测试区域是保护膜10上对应前置摄像头40的区域B，即，对保护膜10上对应第一通孔113(透光孔)的区域进行测试，测试结果如表2所示。提供对比例的保护膜10，与第四实施例的保护膜10相比，对比例的保护膜10的区别仅在于：抗冲击层11上未开设第一通孔113。需要说明的是，本实施例中，尖头冲击仿真、尖头挤压仿真和雾度测试的测试和仿真条件与第一实施例中相同。
表2：第四实施例和对比例的保护膜的光学指标和力学指标
对比第四实施例和对比例的保护膜10的光学指标和力学指标，可以发现：对抗冲击层11开设第一通孔113(透光孔)且在第一通孔113(透光孔)中填充粘接层12材料后，相较于对比例的保护膜10，保护膜10的测试区域B的雾度从1.6％降低到0.6％；对尖头冲击仿真，保护膜10的测试区域B对应的屏幕组件100的应变增大274ue；对尖头挤压仿真，保护膜10的测试区域B对应的屏幕组件100的应变增大9ue。
可以理解的是，通过在抗冲击层11上对应前置摄像头40的区域开设第一通孔113，且在第一通孔113中填充粘接层12材料，可以消除抗冲击层11在该区域对光的散射，同时基 材层13与粘接层12材料的界面对光的散射较小，因此可以降低保护膜10上对应前置摄像头40区域的雾度，提高前置摄像头40的拍照清晰度。同时由于保留了完整的粘接层12、基材层13、硬化层14和减反层15，抗冲击层11上的第一通孔113内填充粘接层12材料，且抗冲击层11上第一通孔113周围的抗冲击层11材料仍保留，保护膜10整体的抗冲击性能和抗挤压性能下降幅度较小。
本实施例中，由于只对抗冲击层11上开设通孔以形成透光孔，透光孔未完全贯穿保护膜10，因而，当保护膜10用于屏幕组件100时，避免了保护膜10上对应透光孔的区域积灰的问题，也避免了用无尘布擦拭保护膜10时透光孔周围出现溢胶和白边的问题。
本申请第四实施例提供的保护膜10的制作方法如下：
步骤1：将硬化层14涂布在基材层13上，将减反层15涂布在硬化层14背离基材层13的侧面上，形成复合膜层一；
步骤2：对抗冲击层11上对应前置摄像头40的区域打孔，使抗冲击层11上形成第一通孔113，将抗冲击层11与复合膜层一贴合，使抗冲击层11的第二表面112与基材层13背离硬化层14的一侧接触，形成复合膜层三；
具体的，可以是先将液态抗冲击层11材料涂布在离型膜上，固化液态抗冲击层11材料后，对抗冲击层11与离型膜的复合膜层进行打孔，再与复合膜层一贴合，撕掉离型膜；也可以是对固态抗冲击层11直接打孔，再将抗冲击层11与复合膜层一贴合。
步骤3：使液态粘接层12材料填满抗冲击层11上的第一通孔113并对其进行固化，在抗冲击层11的第一表面111上形成粘接层12，得到第四实施例提供的保护膜。
具体的，可以是在液态粘接层12材料填满抗冲击层11的第一通孔113后，继续在抗冲击层11的第一表面111上涂布一层厚度均匀的液态粘接层12材料，再对第一通孔113中和第一表面111上的液态粘接层12材料进行固化；也可以是对第一通孔113中的液态粘接层12材料进行固化，之后再在抗冲击层11的第一表面111上贴合固态粘接层12。上述打孔的方式可以是冲裁打孔，也可以是激光打孔，本申请不对打孔方式进行严格限制。
需要说明的是，保护膜10中的叠层结构也可以包括多个粘接层12和多个抗冲击层11，粘接层12和抗冲击层11交替叠置，每一粘接层12的第二表面与每一抗冲击层11的第一表面层叠并连接，与基材层13接触的为抗冲击层11的第二表面；只需保护膜10的硬度和透过率能够满足电子设备1000的使用需求即可。可以在保护膜10上叠层结构中的任意一层或多层开设通孔以形成透光孔，并在透光孔中填充粘接层12材料。
将本申请实施例提供的保护膜10应用于手机等电子设备，由于保护膜10上对应前置摄像头40的区域具有较低的雾度，可以保证使用前置摄像头40拍照的清晰度；且保护膜10上对应前置摄像头40的区域具有较好的抗冲击性能、抗挤压性能，因而保护膜10可以对前置摄像头40起保护作用。由于未对保护膜10上对应前置摄像头40的区域完全开孔，避免了前置摄像头40处积灰的问题，也避免了用无尘布擦拭孔区时出现溢胶和白边的问题。
以上，仅为本申请的部分实施例和实施方式，本申请的保护范围不局限于此，任何熟知本领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以权利要求的保护范围为准。

Claims (14)

  1. 一种保护膜，用于屏幕组件，其特征在于，所述保护膜包括叠层结构和基材层，沿所述保护膜厚度方向，所述叠层结构层叠于所述基材层，所述叠层结构包括至少一个粘接层和至少一个抗冲击层，所述粘接层和所述抗冲击层交替叠置，所述粘接层和所述抗冲击层均具有第一表面和第二表面，所述粘接层的第二表面与所述抗冲击层的第一表面层叠并连接，所述抗冲击层的第二表面与所述基材层接触；
    所述叠层结构上设有透光孔。
  2. 根据权利要求1所述的保护膜，其特征在于，所述叠层结构包括一个所述粘接层和一个所述抗冲击层，所述粘接层的第二表面与所述抗冲击层的第一表面层叠并连接，所述抗冲击层的第二表面与所述基材层接触；
    所述透光孔贯穿所述粘接层和/或所述抗冲击层。
  3. 根据权利要求2所述的保护膜，其特征在于，所述抗冲击层上设有第一通孔，所述第一通孔贯穿所述抗冲击层的第一表面和第二表面，所述粘接层上设有第二通孔，所述第二通孔贯穿所述粘接层的第一表面和所述粘接层的第二表面，所述第一通孔与所述第二通孔同轴连通以形成所述透光孔。
  4. 根据权利要求1所述的保护膜，其特征在于，所述叠层结构包括多个所述粘接层和多个所述抗冲击层，每一所述粘接层的第二表面与每一所述抗冲击层的第一表面层叠并连接，与所述基材层接触的为所述抗冲击层的第二表面；
    所述透光孔贯穿至少一层所述粘接层和/或至少一层所述抗冲击层。
  5. 根据权利要求1所述的保护膜，其特征在于，所述透光孔贯穿至少一个所述抗冲击层，所述透光孔内填充有所述粘接层的材料。
  6. 根据权利要求1-5任一项所述的保护膜，其特征在于，所述保护膜还包括减反层，沿所述保护膜厚度方向，所述减反层设于所述基材层背离所述抗冲击层的一侧。
  7. 根据权利要求6所述的保护膜，其特征在于，所述减反层的材质为氟树脂和纳米硅球的复合材料。
  8. 根据权利要求1-5任一项所述的保护膜，其特征在于，所述保护膜还包括硬化层，沿所述保护膜厚度方向，所述硬化层设于所述基材层和所述减反层之间。
  9. 根据权利要求8所述的保护膜，其特征在于，所述硬化层的材质为丙烯酸树脂和硬质材料的复合材料。
  10. 根据权利要求1所述的保护膜，其特征在于，所述基材层的材质为PET、PI与TPU中的任意一种。
  11. 根据权利要求1所述的保护膜，其特征在于，所述粘接层的材质为OCA。
  12. 根据权利要求1所述的保护膜，其特征在于，所述抗冲击层的材质为硅胶或聚氨酯类材料。
  13. 一种屏幕组件，其特征在于，包括盖板、显示模组、前置摄像头和如权利要求1-12任一项所述的保护膜，沿所述屏幕组件厚度方向，所述显示模组具有第一侧面和第二侧面，所述第一侧面和所述第二侧面相对设置，所述显示模组上设有贯穿所述第一侧面和所述第二侧面的通孔，所述前置摄像头通过所述通孔露出所述显示模组；所述保护膜贴合于所述盖板背离所述前置摄像头的侧面；
    沿所述屏幕组件厚度方向，所述前置摄像头在所述盖板上的正投影落入所述透光孔在所 述盖板上的正投影内。
  14. 一种电子设备，其特征在于，包括壳体和如权利要求13所述的屏幕组件，沿所述电子设备厚度方向，所述壳体开设有开口，所述屏幕组件设于所述壳体的开口处以封堵所述壳体的开口。
PCT/CN2023/108369 2022-11-30 2023-07-20 保护膜、屏幕组件和电子设备 WO2024113897A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202223218432.9U CN219429918U (zh) 2022-11-30 2022-11-30 保护膜、屏幕组件和电子设备
CN202223218432.9 2022-11-30

Publications (1)

Publication Number Publication Date
WO2024113897A1 true WO2024113897A1 (zh) 2024-06-06

Family

ID=87332624

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2023/108369 WO2024113897A1 (zh) 2022-11-30 2023-07-20 保护膜、屏幕组件和电子设备

Country Status (2)

Country Link
CN (1) CN219429918U (zh)
WO (1) WO2024113897A1 (zh)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205553487U (zh) * 2016-03-03 2016-09-07 东莞市纳利光学材料有限公司 一种抗冲击oca光学胶膜
US20170073524A1 (en) * 2015-09-11 2017-03-16 Canon Kabushiki Kaisha Optical member and method for manufacturing the same
CN209442911U (zh) * 2018-12-21 2019-09-27 深圳市摩码科技有限公司 一种abs屏幕保护膜
CN211968632U (zh) * 2020-02-24 2020-11-20 维沃移动通信有限公司 一种屏幕保护膜、显示屏幕以及电子设备
WO2021115347A1 (zh) * 2019-12-10 2021-06-17 RealMe重庆移动通信有限公司 显示屏组件及电子设备
CN113037951A (zh) * 2019-12-24 2021-06-25 宁波舜宇光电信息有限公司 保护膜、贴附有该保护膜的摄像模组及其组装方法
CN213815334U (zh) * 2020-12-25 2021-07-27 Oppo广东移动通信有限公司 柔性显示屏及电子设备
CN113583584A (zh) * 2020-04-30 2021-11-02 华为技术有限公司 一种保护膜、屏幕模组和电子设备
CN113583582A (zh) * 2020-04-30 2021-11-02 华为技术有限公司 保护膜、保护膜组件、显示屏组件及终端
CN113910690A (zh) * 2021-10-20 2022-01-11 业成科技（成都）有限公司 不透光复合层和用于不透光层的透光保护膜

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170073524A1 (en) * 2015-09-11 2017-03-16 Canon Kabushiki Kaisha Optical member and method for manufacturing the same
CN205553487U (zh) * 2016-03-03 2016-09-07 东莞市纳利光学材料有限公司 一种抗冲击oca光学胶膜
CN209442911U (zh) * 2018-12-21 2019-09-27 深圳市摩码科技有限公司 一种abs屏幕保护膜
WO2021115347A1 (zh) * 2019-12-10 2021-06-17 RealMe重庆移动通信有限公司 显示屏组件及电子设备
CN113037951A (zh) * 2019-12-24 2021-06-25 宁波舜宇光电信息有限公司 保护膜、贴附有该保护膜的摄像模组及其组装方法
CN211968632U (zh) * 2020-02-24 2020-11-20 维沃移动通信有限公司 一种屏幕保护膜、显示屏幕以及电子设备
CN113583584A (zh) * 2020-04-30 2021-11-02 华为技术有限公司 一种保护膜、屏幕模组和电子设备
CN113583582A (zh) * 2020-04-30 2021-11-02 华为技术有限公司 保护膜、保护膜组件、显示屏组件及终端
CN213815334U (zh) * 2020-12-25 2021-07-27 Oppo广东移动通信有限公司 柔性显示屏及电子设备
CN113910690A (zh) * 2021-10-20 2022-01-11 业成科技（成都）有限公司 不透光复合层和用于不透光层的透光保护膜

Also Published As

Publication number Publication date
CN219429918U (zh) 2023-07-28

Similar Documents

Publication Publication Date Title
US20200272204A1 (en) Flexible cover plate, flexible display apparatus, and flexible terminal product
EP4020141B1 (en) Flexible display device
US10823996B2 (en) Display panel and method of manufacturing the same, display device
CN110437752B (zh) 光学胶、显示面板及光学胶的制作方法
CN109148722B (zh) 一种有机发光显示面板、其制作方法及显示装置
US11169317B2 (en) Reflector plate and manufacturing method thereof, backlight module and manufacturing method thereof, display device
CN108594515B (zh) 柔性偏光盖板及其制备方法、包含它的显示面板和显示装置
EP3582064B1 (en) Display device and electronic device including the same
CN114170901B (zh) 一种显示面板及显示装置
CN206396112U (zh) 一种电子显示屏内防爆膜
CN111966244A (zh) 触控显示屏及其贴合方法
WO2021115347A1 (zh) 显示屏组件及电子设备
CN106814496A (zh) 光学膜和包括光学膜的液晶显示器
CN104540672A (zh) 包括粘结剂层的层压体及其制备方法
CN113035067A (zh) 柔性膜和显示装置
WO2024113897A1 (zh) 保护膜、屏幕组件和电子设备
CN213803605U (zh) 一种显示屏用的膜体机构
CN110941116A (zh) 背光模组及其制作方法、显示装置
CN112689864B (zh) 可折叠显示屏及其制作方法和显示装置
US20220320475A1 (en) Flexible display apparatus and fabrication method thereof
CN202808680U (zh) 用于液晶显示模组的胶带
JP2019015965A (ja) 微細凹凸積層体及びその製造方法、並びに、カメラモジュール搭載装置
CN216273877U (zh) 新型复合胶带、显示面板及显示装置
CN114038315A (zh) 显示面板和显示装置
CN202808679U (zh) 抗静电遮光反射贴膜

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23896060

Country of ref document: EP

Kind code of ref document: A1