WO2015050333A1

WO2015050333A1 - Display protection plate for mobile device

Info

Publication number: WO2015050333A1
Application number: PCT/KR2014/008807
Authority: WO
Inventors: 김양규; 노동수; 박찬현; 김기수; 정재용; 윤인수; 김태정
Original assignee: (주)미코씨엔씨
Priority date: 2013-10-02
Filing date: 2014-09-23
Publication date: 2015-04-09

Abstract

A protection plate, for covering a front surface of a mobile device divided into a display area formed in the center thereof so as to display a display and a non-display area of the perimeter thereof, comprises a substrate part, an adhesive part, and a transparent film part. The substrate part entirely covers the front surface thereof. The adhesive part is formed on the back side of the substrate part included in the non-display area so as to adhere the substrate part to the front surface thereof. The transparent film part has an uneven portion formed so as to come in contact with a display of the mobile device and is attached to the back side of the substrate part at the inner part of the adhesive part corresponding to the display area of the substrate part.

Description

Screen Protector for Mobile Devices

The present invention relates to a screen protector for a mobile device, and more particularly, to provide a protector for protecting a screen of a mobile device from damage or scratches caused by an external impact.

In general, a mobile device refers to a portable information processing device such as a smartphone, a smart pad, a PMP or a tablet PC. Unlike the conventional simple document writing or scheduling, the mobile device has recently been improved in performance and performance. Due to the development of wireless communication technology, its utilization is gradually increasing in various applications such as Internet search, games, or real-time video and music listening regardless of place. In particular, the recent mobile device is operated by directly touching the screen formed on the front surface, the user can easily input infinite information according to the various forms of the screen.

Such mobile devices are frequently used by attaching a protective plate having a predetermined thickness directly to the screen, because the mobile device may frequently fall and hit or fall due to frequent dropping, bumping, and the like.

In relation to such a protective plate, Korean Patent Publication No. 2009-0013593 discloses a transparent protective plate covering the surface of a liquid crystal screen as a general prior art, and the protective plate is specifically a transparent glass plate, a non-screen area of the outer edge of the edge of the mobile device. Corresponding to the opaque portion formed on the back surface of the glass plate and the adhesive portion formed on the opaque portion to be attached to the non-screen area of the mobile device.

However, since a predetermined space is inevitably formed in the screen area of the center portion of the mobile device by the opaque portion and the adhesive portion of the protective plate, the touch point is moved around when the screen of the mobile device is touched through the glass plate. Moiré may appear to be smeared.

SUMMARY OF THE INVENTION An object of the present invention is to provide a protective plate that can prevent moiré phenomena that spread around from the touch point when touching while protecting the screen of the mobile device.

In order to achieve the above object of the present invention, a protective plate for covering the front surface of the mobile device is divided into a screen area and a non-screen area formed so that the screen is displayed in the center according to one aspect of the substrate portion, the adhesive portion and the transparent film Contains wealth.

The substrate portion covers the entire surface of the substrate. The adhesive part is formed on the rear surface of the non-screen area of the substrate to attach the substrate to the front surface. The transparent film part is attached to the inner back surface of the adhesive part corresponding to the screen area of the substrate part while having an uneven part formed to contact the screen.

According to an embodiment, the transparent film part may be attached through silicon or acryl.

The substrate unit may include a transparent glass substrate and a scattering prevention film attached to a rear surface of the glass substrate to prevent scattering of the glass substrate and having the adhesive portion formed on the rear surface thereof.

The substrate part may further include a functional layer formed on one surface of the glass substrate opposite to the scattering prevention film.

The substrate unit may further include an opaque portion formed to be included in the non-screen area between the glass substrate and the scattering prevention film. In this case, the opaque portion may be formed in a wider area than the adhesive portion.

According to another embodiment of the present invention, the substrate part includes an opaque part formed to be included in the non-screen area of the backside of the anti-scattering film and a resin film having the adhesive part formed on the back side of the substrate. It may further include. In this case, the resin film may be attached through a UV epoxy resin or an optical chemical adhesive (OCA).

In order to achieve the above object of the present invention, a protective plate for covering the front surface of the mobile device is divided into a screen area and a non-screen area of the screen formed so that the screen is displayed in the center according to another feature is a transparent substrate portion, opaque portion and It includes an adhesive portion.

The transparent substrate portion covers the entire surface of the transparent substrate. The opaque portion is formed in an area including the non-screen area on the rear surface of the transparent substrate portion. The adhesive part is formed to be attached to the front surface of the back surface of the opaque part and the back surface of the transparent substrate part. Thus, the transparent substrate portion may have a stepped groove recessed to a predetermined depth on the back surface on which the opaque portion is formed.

In one embodiment, the opaque portion may be formed in the stepped groove such that a rear surface thereof is positioned on the same surface as the rear surface of the transparent substrate portion.

According to such a screen protector for a mobile device, the protector is provided on a substrate portion and a non-screen region of the substrate portion, which cover the entire surface divided into a center screen region on which the screen of the mobile device is displayed and a non-screen region outside thereof. By further comprising a transparent film portion is formed on the back surface to be included and attached to the front surface, and having an uneven portion formed in contact with the screen on the inner back surface of the adhesive portion corresponding to the screen area of the substrate portion When the user touches the screen through the protective plate, the moiré phenomenon in which the touch point is spread around by the uneven portion may be prevented.

Accordingly, by protecting the screen of the mobile device by the protection plate more securely, by preventing the reduction or failure of touch due to the moiré phenomenon of the touch screen, the user can use the mobile device more safely and conveniently.

1 is an exploded perspective view of a mobile device and a protective plate covering a front surface thereof according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along the line II ′ of FIG. 1.

3 is an enlarged view of a portion A;

4 is an enlarged view of a portion B. FIG.

FIG. 5 is a partially enlarged cross-sectional view of a protective plate having an opaque part cut along the line II ′ of FIG. 1 according to another exemplary embodiment of the mobile device shown in FIG. 1.

FIG. 6 is a cross-sectional view of the protection plate according to another exemplary embodiment of the mobile device illustrated in FIG. 1 in the same direction as the line II ′ of FIG. 1.

FIG. 7 is an enlarged view of a portion C of FIG. 6.

FIG. 8 is a cross-sectional view of the protection plate according to another exemplary embodiment of the mobile device illustrated in FIG. 1, cut in the same direction as the line II ′ of FIG. 1.

FIG. 9 is an enlarged view of a portion D of FIG. 8.

Hereinafter, a screen protector for a mobile device according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. As the inventive concept allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. In describing the drawings, similar reference numerals are used for similar elements. In the accompanying drawings, the dimensions of the structures are shown in an enlarged scale than actual for clarity of the invention.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, action, component, part, or combination thereof described on the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, parts, or combinations thereof.

On the other hand, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

1 is an exploded perspective view of a mobile device and a protective plate covering a front surface thereof according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line II ′ of FIG. 1, and FIG. 3 is A 4 is an enlarged view of the portion, and FIG. 4 is an enlarged view of the portion B. FIG.

1 to 4, the protection plate 100 according to an embodiment of the present invention covers a front surface formed on the screen 20 of the mobile device 10.

Specifically, the protection plate 100 covers the front surface divided into a screen area DA formed so that the screen 20 is displayed at the center of the mobile device 10 and a non-screen area NDA of the outer portion of the mobile device 10. Protect the screen 20 from external impact or scratches. The protective plate 100 includes a substrate part 200, an adhesive part 300, and a transparent film part 400.

The substrate unit 200 is a core component that performs the protection function of the protection plate 100. The substrate 200 entirely covers the front surface of the mobile device 10 including the screen area DA and the non-screen area NDA. The substrate unit 200 includes a transparent glass substrate 210 so that a user can see an image displayed on the screen 20 of the mobile device 10.

Accordingly, the substrate unit 200 may further include a scattering prevention film 220 attached to the rear surface of the glass substrate 210. The scattering prevention film 220 is made of polyethylene terephthalate (PET) material so that the glass substrate 210 is not scattered into a plurality of glass fragments when the glass substrate 210 is damaged by an external impact. Thus, it is possible to prevent the user or other people around him from being injured by the glass fragments. The anti-scattering film 220 may be attached through an adhesive 222 including an optical chemical adhesive (OCA). Here, the optical adhesive (OCA) is basically made of a material having a high dielectric constant, so that when the user touches the glass substrate 210 while the image of the screen 20 of the mobile device 10 is easily seen. The constant voltage may be transmitted to the screen 20 of the mobile device 10 to improve the touch feeling.

In addition, the substrate unit 200 may further include a functional layer 230 formed on one surface of the glass substrate 210 opposite to the scattering prevention film 220. The functional layer 230 is an anti-reflection layer for preventing the reflection of external light such as sunlight and the screen 20 image of the mobile device 10, or for preventing fingerprints from being generated when the user touches it. For example, the anti-fingerprint layer.

The adhesive part 300 is formed on the rear surface of the non-screen area NDA of the mobile device 10 to adhere the substrate part 200 to the front surface of the mobile device 10. Thus, the adhesive portion 300 may be formed on the rear surface of the scattering prevention film 220 attached to the glass substrate 210 of the substrate portion 200 substantially. In addition, the adhesive part 300 may include silicon or acryl having excellent adhesive strength and predetermined elasticity. Here, when the adhesive part 300 is to attach the substrate part 200 to the mobile device 10 with a stronger adhesive force, it is more preferable that the adhesive part 300 includes acryl.

As such, the adhesive part 300 adheres the substrate part 200 to the screen 20 of the mobile device 10 in the non-screen area NDA of the mobile device 10, so that it is not necessary to be limited in its transparency. In addition, even when the edge of the front surface of the smart phone is recently rounded, the substrate portion 200 may be stably adhered to the front surface of the mobile device 10 without bubbles through the predetermined elastic ability.

Meanwhile, the substrate 200 may further include an opaque part 240 formed to be included in the non-screen area NDA of the mobile device 10 to cover the adhesive part 300. The opaque part 240 may be formed between the glass substrate 210 and the scattering prevention film 220 so as not to affect the planarization of both surfaces of the substrate part 200. At this time, the opaque part 240 is the optical adhesive (OCA) in the screen area (DA) of the mobile device 10 when the anti-scattering film 220 is bonded with the optical adhesive (OCA) to the predetermined elastic capacity. It is preferably formed to a very thin thickness of micro units so that it can be naturally attached to the glass substrate 210.

Accordingly, since the opaque part 240 covers the adhesive part 300, a bad image due to the uneven adhesion surface may not be visible to the user. Thus, the opaque portion 240 is preferably formed such that its width BMW has a wider area substantially including the width AHW of the adhesive portion 300. In addition, the opaque part 240 is more preferably formed in one-to-one correspondence with the non-screen area NDA that is not related to the screen 20 image of the mobile device 10. In addition, by designing the opaque part 240 in various colors, it is possible to allow the user to select the protective plate 100 of the present invention in various ways according to the preference.

On the contrary, referring to FIG. 5, which partially shows a cross-sectional view of a protective plate having an opaque portion according to another embodiment of the mobile device shown in FIG. 1, taken along line II ′ of FIG. 1, according to another embodiment. The unit 250 may be formed to be included in the non-screen area NDA of the mobile device 10 between the substrate unit 200 and the adhesive unit 300. In this case, since the thickness of the opaque part 240 according to the exemplary embodiment of FIG. 4 (240 of FIG. 4) does not need to be very thin, the design of the opaque part 250 may be implemented in various ways. .

Referring back to FIGS. 1 to 4, the transparent film unit 400 is attached to the rear surface of the substrate unit 200 corresponding to the screen area DA of the mobile device 10. In detail, the transparent film part 400 may be attached to the back surface corresponding to the inside of the adhesive part 300 of the substrate part 200 while having the uneven part 410 formed to contact the screen 20 of the mobile device 10. Can be. In this case, like the adhesive part 300, the transparent film may be attached through a second adhesive 420 such as silicon or acryl.

As described above, the protective plate 100 covers the entire surface of the screen divided into a center screen area DA on which the screen 20 of the mobile device 10 is displayed and a non-screen area NDA on the outside thereof. ) And a screen area DA of the substrate part 200 in a state in which the adhesive part 300 is formed on the rear surface of the non-screen area NDA of the substrate part 200 and attached to the front surface of the mobile device 10. By further including a transparent film portion 400 is attached to the inner back of the adhesive portion 300 corresponding to the having a concave-convex portion 410 formed to contact the screen 20 of the mobile device 10, the user is a protective plate When the screen 20 of the mobile device 10 is touched through the 100, the moiré phenomenon of spreading the touch point around by the uneven portion 410 may be prevented.

Accordingly, while protecting the screen 20 of the mobile device 10 by the protection plate 100 more securely, by preventing a decrease or a poor touch feeling caused by the moiré phenomenon of the touch screen 20, the user is a mobile device 10 Can be used more safely and conveniently.

At this time, the uneven portion 410 is the adhesive portion 300 so that the adhesive portion 300 in a state in contact with the screen 20 of the mobile device 10 can be stably bonded to the front surface of the mobile device 10 through a predetermined elastic ability. It may be attached thinner than a thickness equal to or less than a predetermined difference. In addition, the uneven portion 410 may be uniformly formed at regular intervals in order to prevent the moiré phenomenon according to the user's touch as a whole on the screen area DA of the mobile device 10. To this end, the uneven portion 410 may be formed through an etching process or a coating process, it can be formed more simply by utilizing the etching process of these.

FIG. 6 is a cross-sectional view of the protection plate according to another exemplary embodiment of the mobile device illustrated in FIG. 1 in the same direction as the line II ′ of FIG. 1, and FIG. 7 is an enlarged view of portion C of FIG. 6.

In the present embodiment, since the rest of the configuration except for the substrate portion is the same as the configuration shown in Figs. 1 to 4, the same reference numerals are used for the same configuration, and detailed description thereof will be omitted.

6 and 7, the substrate portion 600 of the protective plate 500 according to another embodiment of the present invention may include a glass substrate 610, a scattering prevention film 620, an opaque portion 630, and a resin film ( 640).

The glass substrate 610 entirely covers the front surface of the mobile device 10 with a transparent material so that a user may view an image displayed on the screen 20 of the mobile device 10. The scattering prevention film 620 is attached to the rear surface of the glass substrate 210 through the first adhesive 622. Here, the first adhesive 622 may include an optical adhesive (OCA) or UV epoxy resin. In this case, the substrate unit 600 may further include a functional layer 650 formed on one surface of the glass substrate 610 opposite to the scattering prevention film 620. Hereinafter, since the glass substrate 610, the scattering prevention film 620, and the functional layer 650 are substantially the same as those of FIGS. 1 to 4, detailed descriptions thereof will be omitted.

The opaque part 630 is formed to be included in the non-screen area NDA on the back side of the anti-scattering film 620 similarly to the embodiment of FIG. 5. In addition, the opaque portion 630 is preferably formed such that its width BMW has a wider area substantially including the width AHW of the adhesive portion 300. In addition, the opaque part 630 may be formed in one-to-one correspondence with the non-screen area NDA as described with reference to FIGS. 1 to 4.

The resin film 640 may be attached to the back surface of the anti-scattering film 620 through the second adhesive 642 including the opaque portion 630. Thus, the second adhesive 642 may include a UV epoxy resin having optical properties while having a predetermined fluidity to be adhered even inside the opaque part 630. That is, by attaching the resin film 640 using the second adhesive 642 containing the UV epoxy resin, the influence of the step by the opaque portion 630 can be prevented. Alternatively, the second adhesive 642 may include an optical adhesive (OCA) having excellent optical properties, in which case the opaque portion 630 is formed very thin in micro units so that the step is hardly formed. The resin film 640 naturally attaches to the back surface of the anti-scattering film 620 naturally through the second adhesive 642. In addition, the resin film 640 may be made of polyethylene terephthalate (PET) material similar to the anti-scattering film 620.

As described above, the protective plate 500 according to the present embodiment attaches a separate resin film 640 to the back surface of the anti-scattering film 620 through the second adhesive 642, thereby improving the overall strength of the protective plate 500. By doing so, the screen 20 of the mobile device 10 may be more securely protected.

FIG. 8 is a cross-sectional view of the protection plate according to another exemplary embodiment of the mobile device illustrated in FIG. 1 in the same direction as the line II ′ of FIG. 1, and FIG. 9 is an enlarged view of portion D of FIG. 8.

8 and 9, the protection plate 700 according to an embodiment of the present invention covers a front surface on which the screen 20 of the mobile device 10 is formed.

In detail, the protection plate 700 covers the front surface divided by the screen area DA formed so that the screen 20 is displayed at the center of the mobile device 10 and the non-screen area NDA of the outer part of the mobile device 10. Protect the screen 20 from external impact or scratches. The protective plate 700 includes a transparent substrate portion 800, an opaque portion 900, and an adhesive portion 950.

The transparent substrate 800 is a core component that performs a protection function of the protective plate 700. The transparent substrate 800 covers the entire surface of the mobile device 10 including the screen area DA and the non-screen area NDA. The transparent substrate part 800 may be made of a transparent and strong glass material having a low probability of scratch while basically allowing a user to view an image displayed on the screen 20 of the mobile device 10.

The transparent substrate 800 has a stepped groove 810 uniformly recessed to a predetermined depth in an area including the non-screen area NDA on the rear surface thereof. In this case, the stepped groove 810 may be various control means such as a sign language speaker, a front camera, a front proximity sensor, or a home button in a non-screen area NDA where the image of the screen 20 on the front of the mobile device 10 is not substantially displayed. It is preferable to be formed in an area except these so as not to interfere with them. The stepped groove 810 may be formed using an etching method.

The opaque portion 900 is formed in the stepped groove 810 of the transparent substrate portion 800. In detail, the opaque portion 900 is formed such that the rear surface of the opaque portion 900 is located on the same surface as the rear surface of the transparent substrate portion 800 so that no step occurs on the rear surface of the transparent substrate portion 800 on which the stepped grooves 810 are formed. The opaque portion 900 formed in the stepped groove 810 is formed in a non-screen area NDA that is not related to the screen 20 of the mobile device 10 so that a bad image that may be generated in this area is not visible to the user. can do. Thus, the stepped groove 810 and the opaque portion 900 may be formed in one-to-one correspondence with the non-screen area NDA, but when they leave the non-screen area NDA, the protection plate 700 of the present invention is poorly processed. As such, they are preferably formed in areas smaller than the non-screen area NDA by a predetermined difference. In addition, by designing each of the step groove 810 and the opaque portion 900 in a variety of colors and various shapes, it is possible for the user to variously select the protective plate 700 of the present invention according to the preference.

The adhesive part 950 is formed to correspond to the rear surface of the opaque portion 900 and the transparent substrate portion 800 positioned on the same surface so that the transparent substrate portion 800 is flat on the front surface of the mobile device 10. Attach it. The adhesive part 950 may include silicon or acryl having excellent adhesive strength and predetermined elasticity.

Meanwhile, the protection plate 700 may further include a scattering prevention film 960 attached to the back surfaces between the back surface of the opaque portion 900, the back surface of the transparent substrate portion 800, and the adhesive portion 950. Thus, the adhesive portion 950 may be substantially uniformly formed on the entire back surface of the anti-scattering film 960. The anti-scattering film 960 is made of polyethylene terephthalate (PET) material so that the transparent substrate portion 800 of the tempered glass material is not scattered by a plurality of glass fragments when an external impact is broken. Thus, it is possible to prevent the user or other people around him from being injured by the glass fragments. The scattering prevention film 960 may be attached to the rear surface of the opaque portion 900 and the rear surface of the transparent substrate portion 800 through the adhesive 965. Here, the adhesive 965 is preferably made of an optical adhesive having a high transmittance and a dielectric constant. In this case, the user touches the transparent substrate portion 800 while making the image of the screen 20 of the mobile device 10 visible. When the constant voltage can be well transmitted to the screen 20 of the mobile device 10 can also improve the touch feeling.

In addition, the protective plate 700 may further include a functional layer 970 formed on one surface opposite to the scattering prevention film 960 of the transparent substrate 800. The functional layer 970 is an anti-reflection layer for preventing the reflection of external light such as sunlight and the screen 20 image of the mobile device 10, or for preventing a fingerprint from being generated when the user touches it. For example, the anti-fingerprint layer.

As described above, the transparent substrate 800 which covers the entire surface of the mobile device 10 divided into the screen area DA formed so that the screen 20 is displayed at the center and the non-screen area NDA on the outside thereof is included. A stepped groove 810 recessed to a predetermined depth is formed in an area including the non-screen area NDA on the back side, and then an opaque portion 900 is formed in the stepped groove 810, and the back surface is a transparent substrate part 800. By forming so as to be located on the same surface and the back surface of the, the opaque portion 900 of the transparent substrate portion 800 is formed to have a flat structure without a step, through the adhesive portion 950 is formed directly or indirectly uniformly on the back surface The transparent substrate 800 may be uniformly attached to the entire surface of the mobile device 10.

As a result, when the transparent substrate unit 800 is attached to the front surface of the mobile device 10, bubbles may be prevented from occurring, and the screen 20 of the mobile device 10 may be prevented through the transparent substrate unit 800. When touching the touch screen, the moiré phenomenon may be prevented from spreading around the touch point by a predetermined space such as bubbles generated above.

Accordingly, while protecting the screen 20 of the mobile device 10 by the protection plate 700 more securely, by preventing the decrease or failure of the touch feeling caused by the moiré phenomenon of the touch screen 20, the user is a mobile device 10 Can be used more safely and conveniently.

Although the detailed description of the present invention has been described with reference to the preferred embodiments of the present invention, those skilled in the art or those skilled in the art will have the idea of the present invention described in the claims to be described later. It will be understood that various modifications and variations can be made in the present invention without departing from the scope of the present invention.

As described above, the protective plate is formed on the substrate portion which covers the entire front surface divided into the center screen area where the screen of the mobile device is displayed and the non-screen area outside thereof, and the back surface included in the non-screen area of the substrate part. Moiré phenomenon of the touch screen by further attaching a transparent film portion having an uneven portion formed in contact with the screen of the mobile device on the inner back side of the adhesive portion corresponding to the screen area of the substrate portion in the state consisting of an adhesive portion attached to the front of the mobile device It can be utilized to secure the screen of the mobile device while preventing through the uneven portion.

Claims

In the protective plate for covering the front of the mobile device divided into a screen area formed so that the screen is displayed in the center and the non-screen area of the outside,

A substrate portion covering the entire surface of the substrate;

An adhesive part formed on a rear surface of the non-screen area of the substrate part to attach the substrate part to the front surface; And

And a transparent film part attached to an inner back surface of the adhesive part corresponding to the screen area of the substrate part while having an uneven part formed to contact the screen.
The screen protector of claim 1, wherein the transparent film portion is attached through silicon or acryl.
The method of claim 1, wherein the substrate portion

Transparent glass substrates; And

It is attached to the back surface of the glass substrate to prevent the scattering of the glass substrate, the screen protection plate for a mobile device, characterized in that it comprises a shatterproof film formed with the adhesive portion on the back surface.
The screen protector of claim 3, wherein the substrate unit further comprises a functional layer formed on one surface of the glass substrate opposite to the scattering prevention film.
The screen protector of claim 3, wherein the substrate unit further comprises an opaque portion formed to be included in the non-screen area between the glass substrate and the anti-scattering film.
The method of claim 3, wherein the substrate portion

An opaque portion formed to be included in the non-screen area of the back surface of the anti-scattering film; And

The back cover of the scattering prevention film including the opaque portion is attached to the whole, the screen protector for a mobile device, characterized in that further comprising a resin film formed with the adhesive portion on the back.
The screen protector of claim 5, wherein the opaque portion is formed in a wider area than the adhesive portion.
The screen protector of claim 6, wherein the resin film is attached through a UV epoxy resin or an optical adhesive.
In the protective plate for covering the front of the mobile device divided into a screen area formed so that the screen is displayed in the center and the non-screen area of the outside,

A transparent substrate portion covering the entire surface of the transparent substrate;

An opaque portion formed on an area including the non-screen area on the rear surface of the transparent substrate portion;

An adhesive part formed to be attached to the front surface of the rear surface of the opaque part and the rear surface of the transparent substrate part,

The transparent substrate is a screen protector for a mobile device, characterized in that it has a stepped groove recessed to a predetermined depth on the back surface formed with the opaque portion.
The screen protector of claim 9, wherein the opaque portion is formed in the step groove so that its rear surface is located on the same surface as the rear surface of the transparent substrate portion.