Adhesive privacy screen protector with cutout

Abstract

Adhesive privacy screen protector with cut-out that can be freely removed and attached to the outside of an electronic device to prevent others from viewing a screen, whereby the adhesive privacy screen protector a privacy film body having a plurality of light grids inside which limit the transmitted light to a permissible viewing angle in order to define a viewing area, and a functional film having a recess on an edge of at least one side, said recess corresponding to the mounting position of a functional component of the electronic device in order to avoid part or all of the functional component being concealed or covered; and a coating layer applied to the privacy film body to cover the surface of the privacy film body and having an opening corresponding to the recess; wherein at least one adhesive element with or without its own magnetic properties is further arranged between the privacy film body and the coating layer, wherein the adhesive element is a single-layer structure with only one magnetic material layer made of a magnetic material or a multi-layer structure with at least one magnetic material layer made of a magnetic material and at least one layer made of another material; wherein the magnetic material of the adhesive element consists of at least one material selected from iron sheet, iron paper, ferromagnetic material, paramagnetic material, diamagnetic material, antiferromagnetic material, ferrimagnetic material and combinations thereof; the height LF of the coating layer, the height LN of the recess and the height LM of the adhesive element satisfy at least one of the following relationships according to equations (1), (2) and (3): LF > LM > LN; LF > LM = LN; LF = LM ≧ LN .

Description

Technical area

[0001] The present invention relates to an adhesive privacy screen protector with a cutout, in particular to an adhesive privacy screen protector with a cutout that can adhere to an electronic device in a reinforced manner. State of the art

[0002] With the increasing proliferation of electronic devices and wireless networks, modern people can easily access the internet at any time. However, the ease of use of electronic devices increases the risk of confidential data being viewed by third parties. To ensure information security, privacy screen protectors are an important option for protecting information.

[0003] These privacy screens limit the viewable area of the screen, allowing only users sitting directly in front of the screen to see the content clearly, while viewers from the side see a blurry or dark screen, thus protecting private information. As a physical protection measure, privacy screens effectively reduce the risk of shoulder surfing attacks and provide additional security, especially when entering passwords or processing confidential documents.

[0004] Typically, the screen bezels of electronic devices (especially laptops) contain metal or magnetically compatible areas. To attach or adhere privacy screen protectors to these devices, a magnetic structure or embedded magnetic material is provided along the edge or top of the film. The adhesive force of the magnetic structure or magnetic material allows privacy screen protectors to securely adhere to the screen bezels of electronic devices, preventing slipping or peeling. Compared with traditional adhesive attachment, the magnetic structure or embedded magnetic material can avoid unnecessary problems caused by adhesive residue and keep the screen clean and tidy.

[0005] However, the magnetic structure or embedded magnetic material of privacy screens can typically only be used on electronic devices with standardized screen bezels; therefore, it may not be suitable for electronic devices with non-standard screen bezels. Furthermore, if the magnetic structure lacks sufficient magnetic adhesion, especially during frequent movement or tilted use of electronic devices such as laptops, the privacy screens may easily slip or fall off.

[0006] In summary, the electronics industry is urgently striving to develop a novel privacy screen protector that can solve the above-mentioned problems. Contents of this utility model

[0007] Therefore, the inventor of the present invention invested considerable research and development energy and dedication, continuously breaking through and innovating in this field, and finally developed a screen privacy screen product that is not only free from the above-mentioned shortcomings or problems of conventional technology and unlimited in size, but also adaptable in size to electronic devices or universally applicable, and automatically repositions itself according to the magnetic polarity of the frame of the electronic device. It incorporates innovative technical means and can improve the quality of life in modern society; thus, this invention has been completed.

[0008] The object of the present invention is to provide a privacy screen protector that can adhere very securely to the outer surface or frame of the screen of an electronic device, has an adhesive element with or without inherent magnetic properties, and can be easily removed from the electronic device. Furthermore, this privacy screen protector not only effectively prevents others from viewing the screen, but also does not impair or diminish the various excellent display effects of the electronic device, such as color, image quality, and sharpness, nor does it hinder the various functions of the electronic device, such as photography, sound recording, video recording, sound playback, and radio reception.

[0009] To achieve the above object, the present invention, according to a first aspect, provides an adhesive privacy screen with a cutout that can be freely detachably attached to the exterior of an electronic device to prevent others from viewing the screen. The adhesive privacy screen comprises a privacy screen body and a coating layer. The privacy screen body has a plurality of light grids inside it that limit the transmitted light to a permissible viewing angle to define a viewing area, and a functional film that has a cutout on an edge of at least one side, the cutout corresponding to the mounting position of a functional component of the electronic device to avoid part or all of the functional component being hidden or covered.The coating layer is applied to the privacy screen body to cover the surface of the privacy screen body and has an opening corresponding to the recess.

[0010] It is preferred if at least one adhesive element with or without its own magnetic properties is arranged between the privacy film body and the coating layer.

[0011] Preferably, the height LF of the coating layer, the height LN of the recess and the height LM of the adhesive element satisfy at least one of the following relationships according to equations (1), (2) and (3): LF>LM>LN; LF>LM=LN; LF=LM≥LN.

[0012] Furthermore, to achieve the above-mentioned object, the present invention, according to a second aspect, provides an adhesive privacy screen with a cutout that can be freely detachably attached to the exterior of an electronic device to prevent others from viewing the screen. The adhesive privacy screen with a cutout comprises a privacy screen body and a coating layer. The privacy screen body has a plurality of light grids inside it that limit the transmitted light to an allowable viewing angle to define a viewing area, and a functional film that has a cutout on an edge of at least one side and is provided with at least one embedding slit, the cutout corresponding to the mounting position of a functional component of the electronic device to avoid part or all of the functional component being hidden or covered.The coating layer is applied to the privacy screen body to cover the surface of the privacy screen body and has an opening corresponding to the recess.

[0013] It is preferred if the embedding slot is arranged such that it is flush with an edge of one side of the privacy film body on at least one side; or the embedding slot is arranged such that it is not adjacent to any edge of any side of the privacy film body. Furthermore, at least one adhesive element with or without inherent magnetic properties is arranged in the embedding slot between the privacy film body and the coating layer.

[0014] Preferably, the height LF of the coating layer, the height LN of the recess, the height LM of the adhesive element and the height LS of the embedding slot satisfy at least one of the following relationships according to equations (4), (5) and (6): LF>LM>LS=LN; LF>LM=LS=LN; LF=LM>LS=LN.

[0015] Furthermore, an adhesion region on the electronic device in the present invention comprises at least one selected from iron sheet, iron paper, ferromagnetic material, paramagnetic material, diamagnetic material, antiferromagnetic material, ferrimagnetic material, and combinations thereof.

[0016] Furthermore, in one embodiment of the present invention, the adhesive element may be a single-layer structure having only one magnetic material layer or a multi-layer structure comprising at least one magnetic material layer and at least one layer of other material.

[0017] Furthermore, in one embodiment of the present invention, a magnetic material suitable for forming the magnetic material layer includes a material with or without its own magnetic properties, such as at least one selected from ferromagnetic material, paramagnetic material, diamagnetic material, antiferromagnetic material, ferrimagnetic material, and combinations thereof.

[0018] More specifically, the magnetic material in this adhesive member may be at least one ferrous material selected from disc magnet, bar magnet, flexible magnet, arc-shaped magnet, permanent magnet, non-permanent magnet, natural magnet, electromagnet, heat-resistant magnet, iron, steel, ferrite, iron oxide (FeO), magnetite (Fe3O4), nickel-zinc ferrite (NiZnFe2O4), cobalt-zinc ferrite (CoZnFe2O4); or at least one ferrous or non-ferrous alloy selected from alloy of Fe, B, Rb, Sm, graphite, Al, Mn, Cu, Mg, Na, Ni, Co, Cr, Au, Ag, Zn, Bi, Al2O3, MnO, CoO and combinations thereof.

[0019] Furthermore, in the case of the adhesive member being a multilayer structure, it may further comprise a first magnetically absorbing and conductive film and / or a second magnetically absorbing and conductive film on one or both surfaces of the upper and lower sides of the magnetic material layer. The first magnetically absorbing and conductive film and the second magnetically absorbing and conductive film each comprise at least one substrate material selected from PET film, PU film, PC film, and TAC film. Furthermore, the magnetic material suitable for the present invention may be an axial magnetic iron, a single-sided multi-pole magnetic iron, or a double-sided multi-pole magnetic iron, depending on the magnetization direction, magnetic pole distribution, and magnetic field distribution.

[0020] Furthermore, in one embodiment of the present invention, the adhesive element is formed as a circle, triangle, rectangle, square, sector, L-shape, polygon or combinations thereof.

[0021] Furthermore, in one embodiment of the present invention, the adhesive element has a thickness between 0.1 mm and 1.0 mm.

[0022] Furthermore, in one embodiment of the present invention, the number of adhesive elements is one, two, or three or more.

[0023] Furthermore, in one embodiment of the present invention, the adhesive element has a magnetic force in the range of 400 gauss to 3500 gauss.

[0024] Furthermore, in one embodiment of the present invention, the light grids are designed as a blind-like privacy protection microstructure.

[0025] Furthermore, in one embodiment of the present invention, the privacy screen protector has a frontal viewing angle between ±15° and ±75°; this frontal viewing angle refers to a maximum angular range within which the user can clearly see the screen content, usually expressed as an angle in the horizontal or vertical direction.

[0026] Furthermore, the electronic device in the present invention is a portable electronic device, a portable smart device, a smartphone, a mobile phone, a tablet, a laptop, or a desktop computer.

[0027] Furthermore, in the present invention, the functional component includes at least one of image sensing component, audio receiving and transmitting component, optical photography component, and digital transmission component.

[0028] Furthermore, in one embodiment of the present invention, the adhesive privacy screen with cutout further comprises an auxiliary accessory that can be arranged on the surface of the privacy screen body or on the frame of the electronic device, wherein this auxiliary accessory can be adhesive and / or magnetic or can be non-adhesive and / or non-magnetic. Furthermore, the auxiliary accessory can further comprise a snap device, a hanging device, or a fastening device to further secure the privacy screen body to the frame of the electronic device.

[0029] In the following, the object and effects of this invention as well as the components, structures and other features of the disclosed adhesive privacy film with cutout are explained in detail with reference to the accompanying drawings of the description of the present invention. Brief description of the drawings Fig. 1(A) to 1(F) are schematic diagrams of the adhesive privacy films with recess according to Embodiments 1-1 to 1-6 of the present invention. Fig. 2(A) to 2(H) are side views of the adhesive privacy films with recess according to Embodiments 2-1 to 2-8 of the present invention. Fig. 3(A) to 3(D) are side views of the adhesive privacy films with recess according to Embodiments 3-1 to 3-4 of the present invention. Fig. 4(A) to 4(F) are schematic diagrams of the adhesive privacy films with recess according to Embodiments 4-1 to 4-6 of the present invention. Fig. 5(A) to 5(F) are schematic diagrams of the adhesive privacy films with recess according to Embodiments 5-1 to 5-6 of the present invention. Fig. 6(A) to 6(C) are sectional views of the adhesive privacy films with recess according to Embodiments 6-1 to 6-3 of the present invention. Fig. 7(A) to 7(C) are sectional views of the adhesive privacy films with recess according to Embodiments 7-1 to 7-3 of the present invention. Fig. 8(A) to 8(C) are sectional views of the adhesive privacy films with recess according to Embodiments 8-1 to 8-3 of the present invention. Fig. 9(A) to 9(F) are side views of the adhesive privacy films with recess according to Embodiments 9-1 to 9-6 of the present invention. Fig. 10 is a side view of the adhesive privacy film with cutout according to Embodiment 10 of the present invention. Fig. 11(A) to 11(D) are sectional views of the adhesive privacy films with recess according to Embodiments 11-1 to 11-4 of the present invention. Fig. 12 is a schematic partially exploded view of the adhesive privacy film with cutout according to Embodiment 12 of the present invention. Fig. 13 is a schematic partially exploded view of the adhesive privacy film with recess according to Embodiment 13 of the present invention. Detailed embodiments

[0030] To better understand the technical features, objects, and effects of the present invention, specific embodiments of the present invention will now be explained in detail with reference to the accompanying drawings. The detailed description and technical content of the present invention will be explained with reference to the drawings as follows, wherein the accompanying drawings are for reference and explanation only and are not to be used to limit this invention.

[0031] The following refers to the Fig. 1, Fig. 2 and Fig. 3, whereby the Fig. 1(A) to 1(F) are schematic diagrams of the adhesive privacy films 1 with recess according to Embodiments 1-1 to 1-6 of the present invention; Fig. 2(A) to 2(H) are side views of the privacy adhesive films 1 with recess according to Embodiments 2-1 to 2-8 of the present invention; and Fig. 3(A) to 3(D) are side views of the recessed adhesive privacy films 1 according to Embodiments 3-1 to 3-4 of the present invention. Furthermore, the recessed adhesive privacy film 1 of the present invention includes at least a privacy film body 10 having a recess 11 and a coating layer 20 applied to the privacy film body 10 and having an opening 21 corresponding to the recess 11.

[0032] First, according to a first aspect of the present invention, the privacy film body 10 has, inside, a plurality of light grids that restrict the transmitted light to a permissible viewing angle to define a viewing area, and a functional film that has a recess 11 on an edge of at least one side, this recess 11 corresponding to the mounting position of a functional component of the electronic device to avoid that part or all of the functional component is hidden or covered.

[0033] As in the Fig. 1, Fig. 2 and Fig. 3, the recess 11 of the present invention can be arbitrarily varied depending on the user's needs, the structure and shape of the electronic device, etc. For example, the recess 11 can be square, rectangular, trapezoidal, round, oval, triangular, or polygonal. Specifically, the shape of the recess 11 is a trapezoid in Embodiments 1-1 to 1-3, 2-1 to 2-4, 3-1, and 3-3, while it is a rectangle in Embodiments 1-4 to 1-6, 2-5 to 2-8, 3-2, and 3-4. However, the present invention is not limited thereto.

[0034] Furthermore, these light curtains can be designed according to different requirements and are typically composed of multiple layers of transparent materials and black opaque strips arranged alternately to form a blind-like privacy-shielding microstructure that transmits light only at a specific angle, thus achieving a privacy-shielding effect. For example, these light curtains can be at least one of a linear light curtain, an oblique light curtain, a honeycomb light curtain, such as a hexagonal or polygonal light curtain, and combinations thereof.

[0035] Furthermore, while a narrower frontal viewing angle provides better viewing angle protection and privacy, excessively restricting the viewing angle can cause problems when viewing the screen. Therefore, users can choose a suitable angle range according to their privacy needs. For example, the frontal viewing angle of these light curtains can be between ±15° and ±75°, more preferably between ±20° and ±70°, even more preferably between ±25° and ±65°, and most preferably between ±30° and ±60°.

[0036] The electronic device for which the cutout adhesive privacy film of the present invention is suitable is not particularly limited. For example, the electronic device may be a portable electronic device, a portable smart device, a smartphone, a mobile phone, a tablet, a laptop, or a desktop computer. The functional component includes at least one of an image capture component, an audio reception and transmission component, an optical photography component, a digital transmission component, a light sensor component, and an image recognition component.

[0037] In addition, at least a portion of the frame of the electronic device typically further includes a non-magnetic part, a magnetic part, a ferrous part, or a magnetic material to which the adhesive privacy film 1 with a cutout of the present invention can adhere. The magnetic material includes a material with or without inherent magnetic properties.The non-magnetic part is ferrous metal or ferrous alloy; the magnet is, for example, at least one magnet selected from disc magnet, bar magnet, flexible magnet, arc-shaped magnet, permanent magnet, non-permanent magnet, natural magnet, electromagnet, heat-resistant magnet; the magnetic material is, for example, a magnetic material selected from iron sheet, iron paper, ferromagnetic material, paramagnetic material, diamagnetic material, antiferromagnetic material, ferrimagnetic material or combinations thereof.

[0038] Second, the coating layer 20 is applied to the privacy film body 10 to cover the surface of the privacy film body 10 and has an opening 21 corresponding to the recess 11. Furthermore, at least one adhesive element 22, with or without inherent magnetic properties, is disposed between the privacy film body 10 and the coating layer 20. The adhesive element 22 may be an axial magnetic iron, a single-sided multi-pole magnetic iron, or a double-sided multi-pole magnetic iron.

[0039] Furthermore, the coating layer 20 in the present invention may also be referred to as a protective layer; it generally refers to a thin layer, film, or sheet coated or applied on the privacy film body, the adhesive member, the substrate, the substrate material, or the privacy film to provide properties such as aging resistance, stain resistance, protection, corrosion resistance, wear resistance, water resistance, oxidation resistance, appearance improvement, heat resistance, or function enhancement. Furthermore, in the present invention, the materials and methods for forming or manufacturing the coating or protective layer are not particularly limited and can be appropriately selected according to the intended end use, the required properties, and the type of object to be covered.

[0040] For example, in the present invention, a ceramic material, a rubber material, a glass material, a nanomaterial, a metal such as zinc, aluminum, or copper, a polymer material such as epoxy resin, polyurethane, polycarbonate, polyester, or polyacrylic, or another material may be used to form or prepare the coating or protective layer. Furthermore, for example, a spraying method, dipping method, roll coating method, electroplating method, powder coating, vapor deposition method, hot-dip galvanizing, printing method, coating method, film forming method, film manufacturing method, or another method may be used to form or prepare the coating or protective layer.

[0041] In addition, the shape of the adhesive element 22 can be arbitrarily designed according to the requirements of the user or the electronic device. The shape of the adhesive element 22 can be rectangular, round, oval, or polygonal, and the number of adhesive elements 22 can be one or more. As shown in the Fig. 2(A), Fig. 2(B), Fig. 2(E) and Fig. 2(F), the adhesive element 22 may be formed in a slightly elongated appearance and have a depression near the center corresponding to the recess 11 and the opening 21; as shown in the Fig. 2(C), Fig. 2(D), Fig. 2(G), Fig. 2(H), the adhesive element 22 may be formed in a slightly rectangular appearance; and as shown in the Fig. 3(A) to 3(D), the adhesive member 22 may also be formed in a slightly rectangular shape. Furthermore, the number of adhesive members 22 is not particularly limited; it may be one or may be two or more.

[0042] As in Fig. 3(A) and Fig. 3(D), the height LF of the coating layer 20, the height LN of the recess and the height LM of the adhesive element satisfy at least one of the following relationships according to equations (1), (2) and (3): LF>LM>LN; LF>LM=LN; LF=LM≧LN.

[0043] Furthermore, in one embodiment of the present invention, the adhesive member 22 may be a single-layer structure having only one magnetic material layer or a multi-layer structure comprising at least one magnetic material layer and at least one layer of other material.

[0044] Furthermore, in one embodiment of the present invention, the magnetic material suitable for forming the magnetic material layer includes a material with or without its own magnetic properties, such as it may be at least one selected from iron sheet, iron paper, ferromagnetic material, paramagnetic material, diamagnetic material, antiferromagnetic material, ferrimagnetic material, and combinations thereof.

[0045] In the present invention, the term "ferromagnetic material" refers to a material that has strong magnetic properties, can generate permanent magnetization under the action of an external magnetic field, and can retain the magnetization even after the external magnetic field is removed. For example, it may be at least one of iron (Fe), nickel (Ni), cobalt (Co), steel, ferrite (ferrites), boron (B), rubidium (Rb), samarium (Sm), and alloys thereof.

[0046] Furthermore, the term "paramagnetic material" in the present invention refers to a material that can generate weak magnetization under the action of an external magnetic field but cannot retain magnetization after the magnetic field is removed. For example, it may be at least one of aluminum (Al), manganese (Mn), copper (Cu), magnesium (Mg), and sodium (Na).

[0047] In the present invention, the term "diamagnetic material" refers to a material that can generate weak opposite magnetization under the action of an external magnetic field and cannot retain magnetization. For example, it can be at least one of copper (Cu), gold (Au), silver (Ag), zinc (Zn), alumina (Al2O3), graphite, and bismuth (Bi).

[0048] Furthermore, the term "antiferromagnetic material" in the present invention refers to a material in which the magnetic moments point in opposite directions and cancel each other out, so that under the action of an external magnetic field, the internal magnetic moments cancel each other out and the total magnetic field is zero. For example, it may be at least one of manganese oxide (MnO), iron oxide (FeO), chromium (Cr), and cobalt oxide (CoO).

[0049] In the present invention, the term "ferrimagnetic material" refers to a material similar to an antiferromagnetic material, but in which the opposing magnetic moments are unequal, so they do not completely cancel each other out, forming a net magnetization. For example, it may be at least one of iron oxide (FeO), magnetite (Fe3O4), nickel-zinc ferrite (NiZnFe2O4), and cobalt-zinc ferrite (CoZnFe2O4).

[0050] More specifically, the magnetic material in this adhesive member may be, for example, at least one ferrous material selected from disc magnet, bar magnet, flexible magnet, arc-shaped magnet, permanent magnet, non-permanent magnet, natural magnet, electromagnet, heat-resistant magnet, iron, steel, ferrite, iron oxide (FeO), magnetite (Fe3O4), nickel-zinc ferrite (NiZnFe2O4), cobalt-zinc ferrite (CoZnFe2O4); or at least one ferrous or non-ferrous alloy selected from alloy of Fe, B, Rb, Sm, graphite, Al, Mn, Cu, Mg, Na, Ni, Co, Cr, Au, Ag, Zn, Bi, Al2O3, MnO, CoO and combinations thereof.

[0051] Furthermore, in the case of a multilayer structure, the adhesive member may further comprise a first magnetically absorbing and conductive film and / or a second magnetically absorbing and conductive film on one or both of the upper and lower surfaces of the magnetic material layer. The first magnetically absorbing and conductive film and the second magnetically absorbing and conductive film each comprise at least one substrate material selected from PET film, PU film, PC film, and TAC film.

[0052] Furthermore, in the present invention, the adhesive member may be an axial magnetic iron, a one-sided multi-pole magnetic iron, or a two-sided multi-pole magnetic iron, depending on the magnetization direction, magnetic pole distribution, and magnetic field distribution.

[0053] In addition, the so-called axially magnetized iron in the present invention typically has only two magnetic poles, with the magnetization direction running along the longitudinal axis (axial) of the object. The magnetic field extends from one end to the other and is distributed at both ends of the object, forming a simple magnetic field with a south pole (S) and a north pole (N); the magnetic field strength is uniform. The so-called unilaterally multipole magnetic iron typically has multiple magnetic poles distributed in a staggered arrangement on the same side. The magnetization direction results in a complex magnetic field with multiple magnetic poles on the same plane, with the magnetic poles and the magnetic field on the same side exhibiting local variations; the magnetic field strength is uneven. The so-called bilaterally multipole magnetic iron means that both sides of the magnetic iron are unilaterally multipole magnetic iron.

[0054] In addition, the operating temperature range of the magnet is typically below 100°C. Prolonged exposure to higher-temperature environments should be avoided to ensure magnetic stability and service life. The adhesive member 22 can be further processed on the top, bottom, left, right, and side surfaces by galvanizing, coating with epoxy resin, or applying anti-rust materials to protect it from air contact. In one embodiment, the first magnetically absorbing and conductive sheet 221 and the magnetically absorbing and conductive sheet 222 can be attached to the adhesive member 22 using a PU adhesive or an acrylic adhesive, wherein the acrylic adhesive has a thickness of 15 µm to 100 µm and an adhesive force of 30 g to 1800 g.

[0055] After the adhesive member 22 is covered with the coating layer 20, it is inevitable that the adhesive force or the magnetic force decreases, and in some cases, only about 50 to 60% of the original magnetic force can be maintained. Therefore, in order to reduce the decrease in the adhesive force or the magnetic force, the first magnetically absorbing and conductive film 221 and / or the second magnetically absorbing and conductive film 222 may be further disposed on the surface of the magnetic material, whereby the adhesive force or the magnetic force can be increased, typically from 50% to 60% to 70% to 85%. The magnetic force of the adhesive member is in the range of 400 gauss to 3500 gauss, with the magnetic force of the adhesive member preferably being in the range of 1000 gauss to 3500 gauss, more preferably in the range of 1500 gauss to 3500 gauss, and most preferably in the range of 2000 gauss to 3500 gauss.

[0056] In addition, one or more adhesive elements 22 are provided, which are arranged according to the polarity, regardless of the polarity of the screen's magnet or if the screen has no magnetic function; or one or more adhesive elements 22 are provided, which are arranged according to the polarity of the screen's magnet.

[0057] The thickness of the adhesive element 22 is between 0.1 mm and 1.0 mm. The thickness of the adhesive element 22 can be arbitrarily varied according to the requirements of the user or the electronic device. The thickness of the adhesive element 22 is preferably between 0.2 mm and 0.7 mm; more preferably between 0.3 mm and 0.6 mm; and most preferably between 0.4 mm and 0.5 mm. Since the thickness of the adhesive element 22 is between 0.1 mm and 1.0 mm, the adhesive element 22 is easily broken, chipped, or broken off during processing and attachment or due to improper use by the user, which reduces the magnetic force of the adhesive element 22 and renders it unusable.However, after applying the first magnetically absorbing and conductive film 221 and the second magnetically absorbing and conductive film 222, the adhesive member 22 can still be reliably attached even if it is broken or torn off to maintain its original magnetic function.

[0058] The shape of the adhesive element 22 can be arbitrarily varied depending on the user's requirements or the shape of the electronic device. The adhesive element can be formed as a circle, triangle, rectangle, square, sector, L-shape, polygon, or combinations thereof, although the present invention is not limited thereto. Furthermore, the number of adhesive elements 22 can be arbitrarily varied depending on the user's requirements or the shape of the electronic device. The number of adhesive elements can be one, two, or three or more, although the present invention is not limited thereto.

[0059] The following refers to the Fig. 4 and Fig. 5, whereby the Fig. 4(A) to 4(F) are schematic diagrams of the adhesive privacy films with cutouts according to Embodiments 4-1 to 4-6 of the present invention, in which both sides are slanted, all interior angles are greater than 90 degrees, and the width of the cutouts is narrow, medium, and wide, respectively. Furthermore, Fig. 5(A) to 5(F) are schematic diagrams of the privacy adhesive films with a cutout according to Embodiments 5-1 to 5-6 of the present invention, in which both sides are perpendicular, all internal angles are 90 degrees, and the width of the cutout is narrow, medium, and wide, respectively. Furthermore, the narrow, medium, and wide widths refer to relative sizes and are not specifically limited. The width can be set as needed.

[0060] In addition, the Fig. 4(A), Fig. 4(C), Fig. 4(E), Fig. 5(A), Fig. 5(C) and Fig. 5(E) are each formed such that the center of the underside of the recess is approximately at the level of the top of the screen of the electronic device, and a circumferential coating layer 20 is arranged on the edge of the privacy film body 10, which essentially has a closed frame shape and in which the width of a part of one side is smaller than the width of the other sides. Furthermore, the Fig. 4(B), Fig. 4(D), Fig. 4(F), Fig. 5(B), Fig. 5(D) and Fig. 5(F) are each configured such that the center of the bottom surface of the recess is located at a specific distance from the top surface of the screen of the electronic device, and a coating layer 20 having at least one open end is disposed on the edge of the privacy film body 10. The specific distance is not particularly limited and can be determined as needed.

[0061] As in the Fig. As shown in FIGS. 4(A) to 4(F) and 5(A) to 5(F), the recessed adhesive privacy films 1 according to Embodiments 4-1 to 4-6 and 5-1 to 5-6 of the present invention have a substantially identical overall appearance structure to the privacy films 1 according to Embodiment 1, except that the adhesive member 22 is embedded or buried in the privacy film body 10, or is located above the privacy film body 10, below the coating layer 20, and at a suitable position on the peripheral region of the privacy film body 10. Likewise, the total number of adhesive members 22 may be one, two, or more. The peripheral region refers to a region located a certain distance from each side of the privacy film 1, wherein the certain distance is generally no greater than the size of the frame of the electronic device; preferably, it corresponds to the width of the frame of the electronic device.In this embodiment, the adhesive element 22 arranged in the edge region can provide a stronger adhesive force, effectively preventing the privacy screen protector from slipping or peeling off during use of the electronic device, especially during frequent movement or tilt. Furthermore, the adhesive element 22 arranged in the edge region can be flexibly adapted to various shapes and thicknesses of device frames, increasing applicability.

[0062] The following refers to Fig. 6, whereby the Fig. 6(A) to 6(C) are sectional views of the privacy adhesive films 1 with cutout according to Embodiments 6-1 to 6-3 of the present invention. As shown in Fig. As shown in FIGS. 6(A) to 6(C), the adhesive privacy films have a substantially identical overall appearance structure to the privacy films according to Embodiment 1, except that the adhesive member 22 is located above the privacy film body 10, below the coating layer 20, and at a suitable position on a side surface of the privacy film body 10, and the total number of adhesive members 22 may be one, two, or more. Therefore, in this embodiment, the description of the privacy angle, the privacy film body 10, the coating layer 20, the structure, thickness, material, properties, size, magnetic force, etc. of the adhesive member 22 of the privacy film 1 will be omitted.

[0063] In addition, Fig. 6(A) of the embodiment 6-1 of the present invention, the coating layer 20 and the adhesive member 22 are arranged at the upper end of one of the front or rear surfaces of the privacy film body 10; in the embodiment 6-2 in Fig. 6(B), the coating layer 20 and the adhesive element 22 are arranged on the lower edge of one of the front or rear surfaces of the privacy film body 10; and in Fig. 6(C) of Embodiment 6-3, a coating layer 20 and an adhesive member 22 are respectively disposed at the upper and lower ends of one of the front or rear surfaces of the privacy film body 10.

[0064] In addition, the coating layer 20 in the present invention may also be referred to as a protective layer; in general, there are no particular restrictions, and it can be appropriately selected depending on the end use, required properties, and the type of object to be covered.

[0065] For example, in the present invention, a ceramic material, a rubber material, a glass material, a nanomaterial, a metal such as zinc, aluminum, or copper, a polymer material such as epoxy resin, polyurethane, polycarbonate, polyester, or polyacrylic, or another material may be used to form or prepare the coating or protective layer; further, for example, a spraying method, dipping method, roll coating method, electroplating method, powder coating, vapor deposition method, hot-dip galvanizing, printing method, coating method, film forming method, film manufacturing method, or another method may be used to form or prepare the coating or protective layer.

[0066] In Fig. 6(A) of Embodiment 6-1 of the present invention, due to the arrangement of the adhesive member 22 at the upper end of the privacy screen body 10, the privacy screen adhesive film 1 with recess of the present invention is able to securely adhere to the electronic device, and the user can easily attach and remove it. This is particularly suitable for situations where the lower area of the screen needs to be frequently clicked or operated, such as when the lower area is a touch function or keyboard area. Since the adhesive point is located at the top, the privacy screen is less affected by gravity and less likely to slip off.

[0067] In addition, Fig. 6(B) of Embodiment 6-2 of the present invention, due to the arrangement of the adhesive member 22 at the bottom end of the privacy screen body 10, lifting of the bottom end of the privacy screen adhesive film 1 with recess of the present invention can be prevented, complete adhesion to the screen can be ensured, and the privacy protection effect can be improved. This is particularly suitable for use with the screen facing upwards (e.g., a tablet lying on a table), because the bottom adhesion can provide more stable support. If a front camera or sensor is located on top of the screen, the bottom adhesion can prevent its function from being affected.

[0068] In addition, Fig. 6(C) of Embodiment 6-3 of the present invention, due to the arrangement of the adhesive elements 22 at the top and bottom of the privacy screen body 10, respectively, the adhesive privacy screen with recess 1 of the present invention is able to provide a more stable adhesive force, thereby preventing any shifting or lifting during use from any angle. For frequently moved laptops or tablets, this configuration can ensure that the privacy screen always remains in an optimal position. The double adhesion at the top and bottom can reduce the deformation or damage of the privacy screen under localized stress and extend its service life.

[0069] The following refers to Fig. 7, whereby the Fig. 7(A) to 7(D) are sectional views of the adhesive privacy films with cutouts according to Embodiments 7-1 to 7-3 of the present invention. As shown in Fig. As shown in FIGS. 7(A) to 7(C), the recessed adhesive privacy films 1 of the present invention have a substantially identical overall appearance structure to the privacy films according to Embodiment 6, except that the adhesive member 22 is located above the privacy film body 10, below the coating layer 20, and at a suitable position on both side surfaces of the privacy film body 10. These privacy films also have a substantially identical overall appearance structure to the privacy films according to Embodiment 1, except that the total number of arranged adhesive members 22 can be one, two, or more. Therefore, in this embodiment, the description of the privacy angle, the privacy film body 10, the coating layer 20, the structure, thickness, material, properties, size, magnetic force, etc. of the adhesive member 22 of the privacy film 1 is omitted.

[0070] In Fig. 7(A) of Embodiment 7-1, a coating layer 20 and an adhesive member 22 are each disposed at an appropriate position on the upper end of the front and rear surfaces of the privacy screen body 10. Therefore, the privacy screen adhesive film 1 with recess of the present invention can firmly adhere to the electronic device, does not easily slip off, and is suitable for situations where the lower part of the screen needs to be frequently clicked or operated, such as when the lower part is a touch function or a keyboard area.

[0071] In Fig. 7(B) of Embodiment 7-2, a coating layer 20 and an adhesive member 22 are respectively disposed at the lower end of the front and rear surfaces of the privacy screen body 10. This ensures complete adhesion of the privacy screen adhesive film 1 with cutout of the present invention to the screen, prevents the lower end from lifting off, and enhances the privacy protection effect. This is particularly suitable for use with the screen facing upward (e.g., a tablet placed on a table), because the bottom adhesion can provide more stable support.

[0072] The adhesive member 22 may have either inherent magnetic properties or no inherent magnetic properties. Furthermore, when the recessed adhesive privacy screen 1 equipped with an adhesive member 22 having inherent magnetic properties is used, the positions of the N pole and the S pole in the adhesive member 22 are automatically attracted to the corresponding pole positions of the screen frame of the electronic device due to magnetic attraction. Therefore, according to the present invention, a function of automatically positioning the privacy screen at the appropriate position of the electronic device can be achieved. Furthermore, due to the adhesive effect, the privacy screen of the present invention, the screen of the electronic device, and the keyboard can be tightly bonded to each other without leaving any gaps.Therefore, after using the electronic device, the device or screen can be closed directly.

[0073] Furthermore, since the privacy screen, the screen, and the keyboard are closely connected, and the magnet of the electronic device's screen corresponds to a sleep mechanism of the keyboard, the self-magnetic force of the adhesive privacy screen can be transmitted to the sleep switch of the keyboard. Furthermore, according to the present invention, the front and back surfaces of the adhesive privacy screen 1 with recess can be further processed to achieve slight differences in optical properties. For example, one side can be subjected to an anti-reflective treatment to obtain a non-reflective, contrast-reducing, and eye-strain-reducing anti-reflective surface (AG surface); or the other side can be subjected to a brightening treatment to obtain a brightening surface (HC surface) with higher color contrast.When using the adhesive privacy film 1 with cutout, which features both an AG surface and an HC surface, the user can choose the front or back side with slightly different optical properties as needed. For example, the anti-reflective AG surface can be selected to reduce eye strain during long word processing sessions; the brightening-treated HC surface can be used when watching movies and multimedia.

[0074] In Fig. 7(C) of Embodiment 7-3, a coating layer 20 and an adhesive member 22 are respectively disposed at the top and bottom ends of the front and back surfaces of the privacy screen body 10. The double adhesion at the top and bottom can reduce deformation or damage to the privacy screen under point load and extend its service life. Therefore, the privacy screen with recess according to the present invention is capable of providing a more stable adhesive force, preventing any movement or lifting during use from any angle. This is especially suitable for frequently moved laptops or tablets.

[0075] The following refers to Fig. 8, whereby the Fig. 8(A) to 8(C) are sectional views of the privacy adhesive films with cutouts according to embodiments 8-1 to 8-3 of the present invention. It is worth noting that in the Fig. 7 shown embodiment 7 and the one in Fig. 8, the recessed adhesive privacy films 1 according to Embodiment 7 and Embodiment 8 have a substantially identical overall appearance structure. Therefore, in Embodiment 8, the description of the privacy angle, the privacy film body 10, the coating layer 20, the structure, thickness, material, properties, size, magnetic force, etc. of the adhesive member 22 of the privacy film 1 is omitted.

[0076] The main difference between the privacy films 1 according to Embodiment 7 and Embodiment 8 is that in the privacy film 1 according to Embodiment 7, the coating layer 20 does not wrap the privacy film body 10 and at least two or more coating layers 20 are present; however, in the privacy film 1 according to Embodiment 8, at least one coating layer 20 is present, and this coating layer 20 wraps at least a part of the upper or lower end of the privacy film body 10.

[0077] In particular, in embodiment 8-1, as shown in Fig. 8(A), the coating layer 20 is arranged at the upper end of the front and rear surfaces of the privacy film body 10, wrapping the upper end of the privacy film body 10 without exposing the adhesive member 22. Therefore, in Embodiment 8-1, as shown in Fig. 8(A), the total number of coating layers 20 is at least one, and the total number of adhesive elements 22 is generally at least twice the total number of coating layers 20. In addition, in embodiment 8-2, as shown in Fig. 8(B), the coating layer 20 is arranged at the lower end of the front and rear surfaces of the privacy film body 10 and wraps the lower end of the privacy film body 10 without exposing the adhesive member 22. Therefore, in Embodiment 8-2, as shown in Fig. 8(B), the total number of coating layers 20 is at least one, and the total number of adhesive elements 22 is generally at least twice the total number of coating layers 20.

[0078] In particular, in embodiment 8-3, as shown in Fig. 8(C), the coating layers 20 are arranged at the upper and lower ends of the front and rear surfaces of the privacy film body 10, wrapping the upper and lower ends of the privacy film body 10 without exposing the adhesive members 22. Therefore, in Embodiment 8-3, as shown in Fig. 8(C), the total number of coating layers 20 is at least two, and the total number of adhesive elements 22 is generally at least twice the total number of coating layers 20.

[0079] The following refers to Fig. 9, whereby the Fig. 9(A) to 9(F) are side views of the adhesive privacy films 1 with recess according to embodiments 9-1 to 9-6 of the present invention.

[0080] In addition, the adhesive privacy film 1 with recess of the present invention comprises, as shown in the Fig. 9(A) to 9(F), an auxiliary accessory 24 may be disposed on the surface of the privacy film body 10 or on the frame of the electronic device, wherein this auxiliary accessory 24 may be adhesive and / or magnetic, or may be non-adhesive and / or non-magnetic. Furthermore, the auxiliary accessory 24 may further include a snap device, a hanging device, or a fastening device to further secure the privacy film body 10 to the frame of the electronic device.

[0081] The following refers to Fig. 10, where Fig. 10 is a side view of the adhesive privacy film with cutout according to Embodiment 10 of the present invention.

[0082] As in Fig. 10, the present invention provides an adhesive privacy screen film 1 with a cutout that can be freely detachably attached to the exterior of an electronic device to prevent others from viewing the screen. The adhesive privacy screen film 1 comprises a privacy screen body 10 and a coating layer 20. The privacy screen body 10 has a plurality of light grids inside it that limit the transmitted light to a permissible viewing angle to define a viewing area, and a functional film that has a cutout 11 on an edge of at least one side and is provided with at least one embedding slot 12, this cutout 11 corresponding to the mounting position of a functional component of the electronic device to avoid part or all of the functional component being hidden or covered.The coating layer 20 is applied to the privacy film body 10 to cover the surface of the privacy film body 10 and has an opening 21 corresponding to the recess 11; furthermore, at least one adhesive element 22 with or without inherent magnetic properties is arranged between the privacy film body 10 and the coating layer 20 in the embedding slot 12.

[0083] In addition, the height LF of the coating layer 20, the height LN of the recess 11, the height LM of the adhesive element 22 and the height LS of the embedding slot 12 satisfy at least one of the following relationships according to equations (4), (5) and (6): LF>LM>LS=LN; LF>LM=LS=LN; LF>LM>LS=LN.

[0084] An adhesive area on the electronic device to which the adhesive privacy film with cutout can be freely attached and removed comprises at least one selected from iron sheet, iron paper, ferromagnetic material, paramagnetic material, diamagnetic material, antiferromagnetic material, ferrimagnetic material, and combinations thereof.

[0085] The following refers to Fig. 11, whereby the Fig. 11(A) to 11(D) are sectional views of the cutout type adhesive privacy films 1 according to Embodiments 11-1 to 11-4 of the present invention.

[0086] In addition, the Fig. 11 shown adhesive privacy films 1 with recess have an essentially identical structure to that shown in Fig. 7, the main difference being that, as shown in Fig. 11(A), the embedding slit 12 according to Embodiment 11-1 of the present invention is arranged to be flush with an edge of one side of the privacy film body 10 on at least one side.

[0087] Furthermore, the main difference is, as in Fig. 11(B) in that the embedding slit 12 according to Embodiment 11-2 is arranged so as not to be adjacent to any edge of any side of the privacy film body 10.

[0088] Furthermore, the main difference is, as in Fig. 11(C) in that the coating layer 20 according to Embodiment 11-3 completely covers the surface of the privacy film body 10, and the embedding slit 12 is arranged to be flush with an edge of at least one arbitrary side of the privacy film body 10.

[0089] Furthermore, the main difference is, as in Fig. 11(D) in that the coating layer 20 according to Embodiment 11-4 completely covers the surface of the privacy film body 10, and the embedding slit 12 is arranged so as not to be adjacent to any edge of any side of the privacy film body 10.

[0090] The following refers to Fig. 12, whereby Fig. 12 is a schematic partially exploded view of the adhesive privacy film with cutout according to Embodiment 12 of the present invention. According to Embodiment 12 of the present invention, the embedding slot 12, as shown in Fig. 12, arranged so as to be adjacent to an edge of one side of the privacy screen body 10 on at least one side, and the adhesive member 22 is embedded in the embedding slot 12 to prevent displacement or peeling due to vibration or external forces. The adhesive member 22 is a multi-layer structure formed of at least one material selected from magnet, iron, single-sided multi-pole magnetic iron, or double-sided multi-pole magnetic iron, or combinations thereof, the first magnetically absorbing and conductive sheet 221 and / or the second magnetically absorbing and conductive sheet 222, which are respectively disposed above and below. In addition, the recessed adhesive privacy screen according to Embodiment 12 of the present invention can be further stably attached to an electronic device through an auxiliary accessory 24.

[0091] The following refers to Fig. 13, whereby Fig.13 is a schematic partially exploded view of the recessed adhesive privacy film according to Embodiment 13 of the present invention. According to Embodiment 13 of the present invention, the embedding slot 12 is disposed near an edge of one side of the privacy film body 10 and does not adjoin any edge. Furthermore, the adhesive member 22 is firmly embedded in the embedding slot 12 to prevent displacement or peeling due to vibration or external force. The adhesive member 22 is a multi-layer structure formed of at least one material selected from magnet, iron, single-sided multi-pole magnetic iron, or double-sided multi-pole magnetic iron, or combinations thereof, the first magnetically absorbing and conductive film 221, and / or the second magnetically absorbing and conductive film 222, which are disposed above and below, respectively.In addition, the adhesive privacy film with cutout according to Embodiment 12 of the present invention can be further stably attached to an electronic device through an auxiliary accessory 24.

[0092] In summary, the position of the adhesive element 22 of the privacy screen protector with cutout of the present invention can be flexibly adjusted according to requirements to ensure an optimal user experience and stability. First, when the adhesive element 22 is arranged at the upper end of the privacy screen protector body 10, the privacy screen protector can stably adhere to the surface of the device in a suspension manner. Since the adhesion point is located at the top, the privacy screen protector body is less affected by gravity and less likely to slip off. This allows the user to easily attach and remove the screen protector, making it very user-friendly. Second, when the adhesive element 22 is arranged at the lower end of the privacy screen protector body 10, lifting of the lower end can be effectively prevented, ensuring complete adhesion of the privacy screen protector to the device screen, and improving the privacy protection effect.Third, when the adhesive element 22 is simultaneously arranged at the top and bottom of the privacy screen body 10, the privacy screen is able to provide a more stable adhesive force. This further enhances the stability of the privacy screen during use and prevents any shifting or lifting, thereby ensuring long-term stability and the privacy protection effect. The design of the adhesive privacy screen with cutout of the present invention not only improves usability but also optimizes its stability and adhesion, effectively improving the user experience and the reliability of the privacy protection function.

[0093] All embodiments described in this disclosure are exemplary and should therefore not be considered limiting. The scope of the present invention is not limited to the above descriptions, but is defined by the claims and is intended to include all changes that come within the meaning and scope of the claims. List of reference symbols: 1 adhesive privacy screen protector with cutout 10 privacy film bodies 11 Recess 12 Embedding slot 20 coating layers 21 Opening 22 Adhesive element 221 first magnetically absorbing and conductive film 222 second magnetically absorbing and conductive film 24 auxiliary accessories

Claims

[1] Adhesive privacy screen protector with cut-out that can be freely removed and attached to the outside of an electronic device to prevent others from viewing a screen, whereby the adhesive privacy screen protector a privacy film body having a plurality of light grids inside which limit the transmitted light to a permissible viewing angle in order to define a viewing area, and a functional film having a recess on an edge of at least one side, said recess corresponding to the mounting position of a functional component of the electronic device in order to avoid part or all of the functional component being concealed or covered; and a coating layer applied to the privacy film body to cover the surface of the privacy film body and having an opening corresponding to the recess; wherein at least one adhesive element with or without its own magnetic properties is further arranged between the privacy film body and the coating layer, wherein the adhesive element is a single-layer structure with only one magnetic material layer made of a magnetic material or a multi-layer structure with at least one magnetic material layer made of a magnetic material and at least one layer made of another material; wherein the magnetic material of the adhesive element consists of at least one material selected from iron sheet, iron paper, ferromagnetic material, paramagnetic material, diamagnetic material, antiferromagnetic material, ferrimagnetic material and combinations thereof; the height LF of the coating layer, the height LN of the recess and the height LM of the adhesive element satisfy at least one of the following relationships according to equations (1), (2) and (3): LF>LM>LN; LF>LM=LN; LF=LM≧LN. [2] The cutout adhesive privacy film according to claim 1, wherein the adhesive member is a multilayer structure formed by stacking a first magnetically absorbent and conductive film, a first magnetic material, and a second magnetically absorbent and conductive film; wherein the first magnetically absorbing and conductive film and the second magnetically absorbing and conductive film each has at least one substrate material selected from PET film, PU film, PC film, TAC film and combinations thereof. [3] Adhesive privacy film with cutout according to claim 1, wherein the adhesive element is formed as a circle, triangle, rectangle, square, sector, L-shape, polygon or combinations thereof. [4] Adhesive privacy film with cutout according to claim 1, wherein the adhesive element has a thickness between 0.1 mm and 1.0 mm. [5] The cutout adhesive privacy film according to claim 1, wherein the number of adhesive elements is one, two, or three or more. [6] Adhesive privacy film with cutout according to claim 1, wherein the adhesive element has an adhesive force between 200 gauss and 3500 gauss. [7] Adhesive privacy film with recess according to claim 1, wherein the light grids are formed as a blind-like privacy microstructure. [8] The cutout adhesive privacy film of claim 1, wherein the cutout adhesive privacy film has a frontal viewing angle between ±15° and ±75°. [9] The cutout adhesive privacy screen protector of claim 1, further comprising an auxiliary accessory that attaches the privacy screen protector to the electronic device, wherein the auxiliary accessory is a snap device or a fastening device. [10] The cutout adhesive privacy film of claim 1, wherein the electronic device is a portable electronic device, a portable smart device, a smartphone, a mobile phone, a tablet, a laptop, or a desktop computer. [11] Adhesive privacy screen protector with cut-out that can be freely and detachably attached to the outside of an electronic device to prevent others from viewing a screen, wherein the adhesive privacy screen protector with cut-out a privacy film body having a plurality of light grids inside which restrict the passing light to a permissible viewing angle in order to define a viewing area, and a functional film which has a recess on an edge of at least one side, and is provided with at least one embedding slot, said recess corresponding to the mounting position of a functional component of the electronic device, in order to avoid that a part or the entire functional component is concealed or covered; and a coating layer applied to the privacy film body to cover the surface of the privacy film body and having an opening corresponding to the recess; wherein at least one adhesive element with or without its own magnetic properties is arranged between the privacy film body and the coating layer in the embedding slot; wherein the adhesive element is a single-layer structure with only one magnetic material layer made of a magnetic material or a multi-layer structure with at least one magnetic material layer made of a magnetic material and at least one layer made of another material; wherein the magnetic material of the adhesive element consists of at least one material selected from iron sheet, iron paper, ferromagnetic material, paramagnetic material, diamagnetic material, antiferromagnetic material, ferrimagnetic material and combinations thereof; the height LF of the coating layer, the height LN of the recess, the height LM of the adhesive element and the height LS of the embedding slot 12 satisfy at least one of the following relationships according to equations (4), (5) and (6): LF>LM>LS=LN; LF>LM=LS=LN; LF=LM>LS=LN. [12] The cutout adhesive privacy film of claim 11, wherein the embedding slot is arranged to be flush with an edge of one side of the privacy film body on at least one side; or the embedding slot is arranged to be not adjacent to any edge of any side of the privacy film body. [13] The cutout adhesive privacy film according to claim 11, wherein the adhesive member is a multi-layer structure formed by sequentially stacking a first magnetically absorbent and conductive film, a first magnetic material, and a second magnetically absorbent and conductive film; wherein the first magnetically absorbent and conductive film and the second magnetically absorbent and conductive film each comprise at least one substrate material selected from PET film, PU film, PC film, and TAC film. [14] Adhesive privacy film with cutout according to claim 11, wherein the adhesive element is formed as a circle, triangle, rectangle, square, sector, L-shape, polygon or combinations thereof. [15] Adhesive privacy film with cutout according to claim 11, wherein the adhesive element has a thickness between 0.1 mm and 1.0 mm. [16] Adhesive privacy film with cutout according to claim 11, wherein the number of adhesive elements is one, two or three or more. [17] Adhesive privacy film with cutout according to claim 11, wherein the adhesive element has an adhesive force between 200 gauss and 3500 gauss. [18] Adhesive privacy film with recess according to claim 11, wherein the light grids are formed as a blind-like privacy microstructure. [19] The cutout adhesive privacy film of claim 11, wherein the cutout adhesive privacy film has a frontal viewing angle between ±15° and ±75°. [20] The cutout adhesive privacy film of claim 11, wherein the electronic device is a portable electronic device, a portable smart device, a smartphone, a mobile phone, a tablet, a laptop, or a desktop computer. [21] The cutout adhesive privacy screen protector of claim 13, further comprising an auxiliary accessory that attaches the privacy screen protector to the electronic device, wherein the auxiliary accessory is a snap device or a fastening device.

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