JP3183179U - Protector - Google Patents

Abstract

Provided is a protector capable of achieving both prevention of Newton ring generation and glare generation.
A protective body is disposed on a translucent sheet, a plurality of adhesive portions spaced apart at a peripheral portion of one surface of the sheet, and the Newton ring. And a plurality of protrusions 111a for preventing the occurrence of the occurrence, and the adhesive portion is adhered to a peripheral portion of a display surface for displaying an image to protect the display surface. The distance between the protrusions 111a is shorter than the wavelength of visible light.
[Selection] Figure 5

Description

  The present invention relates to a protector that is attached to a display unit that displays information and protects the display unit.

  Multi-function mobile phones (so-called smartphones) that can be operated via a touch panel and can send and receive e-mails, connect to the Internet, and execute application software, and tablet terminals that are operated via a touch panel can quickly obtain necessary information. It is generally popular because it can be acquired and transmitted.

  Smartphones and tablet terminals are configured with a flat display with a touch panel for the majority of the front to improve user visibility, and the flat display is damaged when the user touches the display for operation. There is a risk. Therefore, a permeable protective sheet for protecting the flat display has been conventionally proposed, and the flat display can be protected from damage by sticking the protective sheet to the flat display.

  When a user attaches a protective sheet to a flat display, air enters between the protective sheet and the flat display, and a part where the adhesive layer does not adhere to the flat display is generated, and air is trapped in the part, and bubbles are generated. Sometimes. Also, during the pressing operation, Newton rings may occur around the pressed portion.

  In Patent Document 1, the adhesive portion is dot-printed on the peripheral portion of the sheet, and a space through which air flows is secured between the adhesive portions to prevent generation of bubbles, and on the surface of the sheet facing the flat display. A protector that forms a rough surface and prevents the occurrence of Newton rings during a pressing operation is disclosed.

JP2012-83718

  The rough surface can be formed by applying a solution containing fine particles to a sheet and curing it, but it is difficult to adjust the distance between the protruding portions of the rough surface, and the distance is the wavelength of visible light. The light scattering property may be insufficient. As a result, there is a problem that visibility is deteriorated by reflected light and so-called glare occurs.

  This invention is made | formed in view of such a situation, and it aims at providing the protector which can make generation | occurrence | production prevention of Newton ring and generation | occurrence | production of glare compatible.

  The protector according to the present invention includes a translucent sheet, a plurality of adhesive portions spaced apart at a peripheral portion of one surface of the sheet, and the one surface of the sheet. And a protective body that protects the display surface by adhering the adhesive portion to a peripheral portion of a display surface for displaying an image, and a distance between the protrusions is shorter than a wavelength of visible light. It is characterized by that.

  In the present invention, the Newton ring is prevented from occurring by arranging one side of the sheet having projections facing the display surface, and the distance between the projections is made sufficiently smaller than the wavelength of visible light to scatter light. This makes it easy to prevent glare.

  The protector according to the present invention is characterized in that the protrusions are conical and the plurality of protrusions constitute a moth-eye structure.

  In the present invention, the protrusion constitutes a moth-eye structure, and light scattering is reliably realized.

  The protector according to the present invention is characterized in that a contamination prevention layer for preventing contamination is provided on the other side of the sheet.

  In the present invention, the contamination prevention layer is formed on the other surface (front surface) of the sheet, thereby preventing contamination of the front surface of the sheet with oil and moisture. Even when the user touches the front of the sheet with a finger, fingerprints due to oil, moisture, etc. are unlikely to occur.

  The protector according to the present invention is characterized in that a layer having an antibacterial or deodorant material is provided on the other side of the sheet.

  In the present invention, a layer having an antibacterial or deodorant material is formed on the front surface of the sheet to realize an antibacterial and deodorant function.

  The protector according to the present invention is characterized in that a self-healing layer for repairing scratches is provided on the other side of the sheet.

  In the present invention, a self-healing layer is formed on the front surface of the sheet, and even when an object scratches the front surface of the sheet and a scratch is generated, the scratch disappears with time.

  The protector according to the present invention is characterized in that a phosphorescent layer having a phosphorescent material is provided on one side or the other side of the sheet.

  In the present invention, since the phosphorescent layer is provided on the sheet, the protective body shines when the protective body is moved from a bright place to a dark place.

  The protector according to the present invention is characterized in that a half mirror layer is provided on one side or the other side of the sheet.

  In the present invention, a half mirror layer is provided on the sheet, and light from a protection object (for example, a display) of the protector is transmitted. When the display with the protective body is lit, the user visually recognizes the image displayed on the display. When the display is turned off, the half mirror layer reflects light from the opposite side of the display, so that the user can use the display with a protective body as a mirror.

  The protector according to the present invention is characterized in that the sheet transmits light that has entered at an incident angle of a predetermined angle or less.

  In the present invention, the sheet is configured so that light that has entered at an incident angle equal to or less than a predetermined angle is transmitted, and when a user places a protector on the display, a third party next to the user Cannot be seen.

  By arranging one surface of the sheet with protrusions facing the display surface, Newton rings are prevented from occurring, and by making the distance between the protrusions sufficiently smaller than the wavelength of visible light, it is easy to scatter light. Since the occurrence of sticking is prevented, it is possible to achieve both the prevention of Newton rings and the prevention of glare.

2 is a front view schematically showing a protector according to Embodiment 1. FIG. It is a rear view which outlines a protector. It is sectional drawing which made the III-III line shown in FIG. 1 the cutting line. It is an enlarged view which shows the adhesion part vicinity of a protector. FIG. 3 is an enlarged schematic view schematically showing a configuration of a sheet. It is a disassembled perspective view which shows a protector and a tablet-type terminal. It is process drawing which shows the manufacturing process of a protector. It is a rear view which shows the pattern printed on the sheet | seat original fabric and the back surface of a sheet | seat. FIG. 10 is a process diagram showing a production process of a protector according to Embodiment 2. FIG. 10 is a process diagram showing a production process of a protector according to Embodiment 3. FIG. 9 is a process diagram showing a production process of a protector according to a fourth embodiment. FIG. 10 is a process diagram showing a production process of a protector according to a fifth embodiment.

(Embodiment 1)
Hereinafter, the present invention will be described in detail with reference to the drawings showing a protector according to Embodiment 1. 1 is a front view schematically showing the protective body, FIG. 2 is a rear view schematically showing the protective body, FIG. 3 is a cross-sectional view taken along the line III-III shown in FIG. 1, and FIG. It is an enlarged view which shows the part vicinity.

  In the figure, 1 is a colorless and transparent sheet 1 arranged in front of a tablet terminal 10 (see FIG. 6 described later). In addition, the sheet | seat 1 should just have permeability | transmittance and may be colored. The sheet 1 has a shape corresponding to the shape of the front surface of the tablet terminal 10. The sheet 1 has a vertically long and substantially rectangular shape, and the four corners of the sheet 1 have an arc shape. The dimensions of the sheet 1 are appropriately set according to the dimensions of the tablet terminal 10. For example, the longitudinal dimension of the sheet 1 is about 23.6 cm, and the lateral dimension of the sheet 1 is, for example, about 18.3 cm. A cutout 1a is formed on the short side of the sheet 1, and the cutout 1a is arranged at a position aligned with an operation unit 12 of the tablet terminal 10 (see FIG. 6 described later). The notch 1a has a semi-elliptical shape in which the arc portion protrudes toward the center of the sheet 1.

  The sheet 1 can be applied not only to the tablet terminal 10 but also to other devices having a flat display such as a smartphone. When the sheet 1 is applied to another apparatus, the sheet 1 is appropriately changed. For example, when applied to a smartphone, a notch is provided at a position corresponding to the speaker of the smartphone.

  The sheet 1 may be a so-called blind sheet through which light that has entered at an incident angle equal to or smaller than a predetermined angle is transmitted. The blind sheet includes a linear transparent portion and an opaque stripe portion. The transparent portions and the opaque portions are alternately arranged so as to form stripes. The transparent part is sandwiched between opaque parts on both sides, and light entering the transparent part at an incident angle larger than a predetermined angle is blocked by the opaque part. Therefore, only the light that enters at an incident angle equal to or smaller than a predetermined angle passes through the blind.

  For example, the blind sheet transmits only light that has entered the sheet 1 at an incident angle in the range of plus 45 degrees to minus 45 degrees. Therefore, when the blind sheet is arranged on the flat display 11 (see FIG. 6 described later), a third party located next to the user cannot visually recognize the video displayed on the flat display 11 via the sheet 1. . Needless to say, the limit value of the incident angle through which light passes is not limited to 45 degrees, but may be 30 degrees or other angles.

  As shown in FIG. 2, a decorative portion 2 is provided on the entire peripheral edge portion of the back surface of the sheet 1. The decorative portion 2 has a frame shape with a predetermined width. For example, the decoration portion 2 is colored (white or black) or a design. In addition, the decoration part 2 also has the practical use of concealing the location in which the decoration part 2 is arrange | positioned, and making it invisible.

  As shown in FIGS. 2 and 3, a large number of circular bonding portions 3, 3,... 3 are arranged on the decoration portion 2 in a staggered manner with a predetermined interval. As shown in FIG. 4, the diameter of the bonding portion 3 is approximately 2 mm, and the vertical distance and horizontal distance between the bonding portions 3 are approximately 1 mm. The thickness of the bonding part 3 is 15 to 20 microns. As shown in FIGS. 2 and 3, a film 4 having substantially the same size as the sheet 1 is provided on the back side of the sheet 1, and the film 4 is in contact with the adhesive portion 3. The film 4 prevents dust from adhering to the bonding portion 3 and can be peeled off from the bonding portion 3. Even after peeling, the adhesive strength of the adhesive portion 3 does not decrease, and the user can reattach the protective body as necessary. The surface of the flat display 11 is made of a translucent member such as an acrylic plate or a glass plate.

  FIG. 5 is an enlarged schematic view schematically showing the configuration of the sheet 1. The sheet 1 includes a light transmissive film 110 and a cured resin layer 111 formed on one surface of the light transmissive film 110 (the back surface of the sheet 1).

  Examples of the material of the light transmissive film 110 include polycarbonate, polystyrene resin, polyester, polyurethane, acrylic resin, polyether sulfone, polysulfone, polyether ketone, cellulose resin (triacetyl cellulose, etc.), polyolefin, and alicyclic. Examples include polyolefin.

  The cured resin layer 111 is a film made of a cured product of the active energy ray-curable resin composition, and has a fine uneven structure on the surface. The fine concavo-convex structure includes a plurality of protrusions 111a and is formed as follows using, for example, a roll-shaped mold of anodized aluminum.

  An active energy ray-curable resin composition from a tank between a roll-shaped mold having a fine concavo-convex structure on the surface and a light-transmitting film 110 that moves along the surface of the roll-shaped mold in synchronization with the rotation of the roll-shaped mold. Supply things. The active energy ray curable resin composition is filled in the recesses of the fine concavo-convex structure, and the active energy ray curable resin composition is irradiated with the active energy ray curable resin composition through the light transmissive film 110 from the active energy ray irradiating device. By curing the energy ray curable resin composition, the cured resin layer 111 to which the fine concavo-convex structure on the surface of the roll mold is transferred is formed.

  As the fine concavo-convex structure, a so-called moth-eye structure in which a plurality of protrusions 111a having a substantially conical shape or a pyramid shape are arranged is preferable. A moth-eye structure in which the distance between the protrusions 111a is equal to or smaller than the wavelength of visible light can be an effective antireflection means by continuously increasing the refractive index from the refractive index of air to the refractive index of the material. Are known.

  The average interval between the protrusions 111a is not more than the wavelength of visible light, that is, not more than 400 nm. The anodized aluminum mold is configured such that when the protrusions 111a are formed, the average distance between the protrusions 111a is about 80 to 200 nm, and the average distance between the protrusions 111a is particularly preferably 250 nm or less.

  The average distance between the protrusions 111a is preferably 20 nm or more from the viewpoint of easy formation of the protrusions 111a. The average distance between the protrusions 111a is obtained by measuring the distance between adjacent protrusions 111a (distance from the center of the protrusion 111a to the center of the adjacent protrusion 111a) by electron microscope observation, and averaging these values. .

  The aspect ratio of the protrusion 111a (height of the protrusion 111a / average interval between the protrusions 111a) is preferably 0.8 to 5.0, more preferably 1.2 to 4.0, and 1.5 to 3.0. Particularly preferred. When the aspect ratio of the protrusion 111a is 1.0 or more, the reflectance is sufficiently low and the wavelength dependence of the reflectance is small. When the aspect ratio of the protrusion 111a is 5.0 or less, the scratch resistance of the protrusion 111a is good.

  The height of the protrusion 111a is a value obtained by measuring the distance between the top of the protrusion 111a and the bottom of the recess existing between the protrusions 111a when observed with an electron microscope at a magnification of 30000. The height of the protrusion 111a is preferably 80 to 400 nm, and more preferably 100 to 250 nm. Thereby, generation | occurrence | production of a Newton ring can be prevented.

  The shape of the protrusion 111a is such that the cross-sectional area of the protrusion 111a in the direction orthogonal to the height direction continuously increases from the outermost surface in the depth direction, that is, the cross-sectional shape of the protrusion 111a in the height direction is a triangle, trapezoid, A shape such as a bell shape is preferred.

  The difference between the refractive index of the cured resin layer 111 and the refractive index of the light transmissive film 42 is preferably 0.2 or less, more preferably 0.1 or less, and particularly preferably 0.05 or less. When the refractive index difference is 0.2 or less, reflection at the interface between the cured resin layer 111 and the film 42 is suppressed.

  FIG. 6 is an exploded perspective view showing the protector and the tablet terminal 10. The tablet terminal 10 includes a flat display 11 having a flat front surface. When arrange | positioning a protector on the flat display 11, as shown in FIG. 5, after a user peels the film 4, the back of a protector is made to oppose the front of the tablet-type terminal 10. FIG. The dimension of the decoration part 2 is substantially the same as the frame part around the flat display 11 of the tablet terminal 10. The user performs alignment so that the vertical and horizontal positions of the decorative portion 2 and the frame portion are aligned.

  Then, the protector is disposed on the flat display 11, and the decorative portion 2 is pressed to adhere the bonding portion 3 to the frame portion around the flat display 11. As shown in FIG. 6, the central portion of the sheet 1 located on the inner side of the decoration portion 2 faces the flat display 11. In addition, the adhesive part 3 is not provided in the center part of the sheet | seat 1, and the user can visually recognize the whole image | video displayed on the flat display 11 via the sheet | seat 1. FIG.

  An appropriate gap is provided between the sheet 1 and the flat display 11 by the decorative portion 2 and the bonding portion 3, and a large number of bonding portions 3, 3,... 1 and the flat display 11 and between the bonding parts 3, 3,... 3, air can flow, and no bubbles are generated on the flat display 11. Therefore, the user can clearly see the flat display 11 through the sheet 1. Moreover, the operation part 12 is located inside the notch 1a, and the user can operate the operation part 12.

Next, the manufacturing process of a protector is demonstrated. FIG. 7 is a process diagram showing the production process of the protector, and FIG. 8 is a rear view showing the pattern printed on the original sheet and the back side of the sheet.
As shown in FIG. 7A, first, a large sheet material 100 is installed. Next, as shown in FIG. 7B and FIG. 8A, the decorative portion 2 is printed in a grid pattern at positions corresponding to the frame portion around the flat display 11 on the back surface of the original sheet 100. 7C and FIG. 8A, a plurality of adhesive portions 3 are staggered by silk screen printing on the decorative portion 2 using an adhesive, and dots formed by the plurality of adhesive portions 3, 3,... Form a pattern. The dot pattern is in the form of a lattice, in other words, a plurality of annular patterns arranged in series. In addition, the dot pattern should just be an aspect provided with the some annular pattern, and does not need to be connected continuously. The adhesion part 3 printed on the decoration part 2 is fixed to the decoration part 2. Then, as shown in FIG. 7D, the film 4 is provided on the back surface of the original sheet 100.

  Then, as shown in FIGS. 7E and 8B, the original sheet 100 is punched and cut in accordance with the dot pattern, has dimensions corresponding to the vertical dimension and the horizontal dimension of the tablet terminal 10, and the peripheral edge of one surface of the sheet 1 A plurality of protectors having a plurality of adhesive portions 3 provided on the part are manufactured. When punching out the original sheet 100, a notch 1a is also formed. Note that the sheet original fabric 100 may be divided after the formation of the notches 1a, or the notches 1a may be formed after the sheet original fabric 100 is divided.

  The decorative portion 2 may be printed at a position corresponding to the frame portion around the flat display 11 on the front surface of the original sheet 100, or the decorative portion 2 may be printed on the front surface of the sheet 1. The process of printing the decorative portion 2 on the front surface of the original sheet 100 or the sheet 1 may be performed in an order suitable for manufacturing the protector in the series of processes described above. For example, it may be executed at the end of a series of steps.

(Embodiment 2)
Hereinafter, the present invention will be described in detail with reference to the drawings showing a protector according to Embodiment 2. FIG. 9 is a process diagram showing the production process of the protector.

  As shown in FIG. 9F, the protector is provided on the entire front surface of the sheet 1 and includes a transparent contamination prevention layer 6 that prevents contamination by oil and moisture. The contamination prevention layer 6 is made of one or both of a thermosetting resin and an ionizing radiation curable resin. In particular, since the coating hardness after curing is excellent, the contamination prevention layer 6 preferably contains at least an ionizing radiation curable resin. The ionizing radiation curable resin is used alone or in combination with a photopolymerizable monomer or a photopolymerizable prepolymer. The ionizing radiation curable resin may contain a compound or the like (ionizing radiation (light) polymerization initiator) that generates active radical species upon irradiation with ionizing radiation (light).

  At least an isocyanuric acid derivative is used as a photopolymerizable monomer (an example of a reactive monomer) contained in the ionizing radiation curable resin. The isocyanuric acid derivative has an isocyanuric acid skeleton, and has a structure in which a polymerizable reactive group and an alkylene oxide chain are bonded to the isocyanuric acid skeleton.

  The contamination prevention layer 6 contains an ionizing radiation curable resin, and an isocyanuric acid derivative is used as a photopolymerizable monomer as an example of a reactive monomer. Instead of or together with the ionizing radiation curable resin, a thermosetting resin may be contained. When the anti-staining layer 6 contains a thermosetting resin, a thermopolymerizable monomer or prepolymer is used alone or in combination. If necessary, a thermal polymerization initiator, that is, a compound that generates active radical species by heating, or the like is contained. In this case, an isocyanuric acid derivative may be used as the thermally polymerizable monomer.

  When fingerprints adhere to the contamination prevention layer 6, in order to make the attached fingerprints less noticeable, appropriate hydrophilicity and lipophilicity may be imparted to the surface, rather than imparting strong water repellency and oil repellency. It is valid. By using a specific isocyanuric acid derivative, moderate hydrophilicity and lipophilicity can be expressed on the surface of the cured film. By containing a specific isocyanuric acid derivative in the photopolymerizable monomer, it is possible to develop moderate hydrophilicity and lipophilicity in the cured film. Since the degree of contact of the fingerprint component (aqueous component and oil component) with the surface does not become too small, the fingerprint component spreads moderately on the surface. As a result, even when a fingerprint adheres to the surface after curing, the attached fingerprint becomes difficult to stand out. Moreover, the hardness fall of the contamination prevention layer 6 after hardening can also be prevented. Each performance of making the fingerprint inconspicuous and preventing the decrease in hardness is balanced.

  Next, the manufacturing process of a protector is demonstrated. As shown in FIG. 9A, first, the sheet material 100 is installed. Next, as shown in FIG. 9B, a liquid antifouling material is applied to the entire front surface of the original sheet 100 and cured. The cured antifouling material becomes the antifouling layer 6. Thereafter, similarly to the first embodiment, the decorative portion 2, the adhesive portion 3, and the film 4 are sequentially provided on the back surface of the original sheet 100. And the sheet | seat original fabric 100 is punched out, and the several protection body which provided the some adhesion part 3 in the peripheral part of the one surface of the sheet | seat 1 is manufactured (FIG. 9C-FIG. 9F).

  Since the contamination prevention layer 6 is formed on the front surface of the sheet 1, it is possible to prevent adhesion of oil or the like to the front surface of the sheet 1. Even when the user touches the front of the sheet 1 with a finger, fingerprints due to oil, moisture, etc. are unlikely to occur. Even if the user touches the sheet 1 for touch panel operation, the visibility of the flat display 11 can be maintained. Moreover, the designability and cleanliness can be maintained.

  Considering the permeability of the protector, the Newton ring prevention function and the strength, the pencil hardness of the surface of the sheet 1 is H to 6H (JIS standard 7105), and the transmittance of the protector is 80 to 95% (JIS standard 7105). The haze (cloudiness) is preferably set to 1.6 to 8.5% (JIS standard K5600). For example, the pencil hardness is set to 3H, the transmittance is set to 91%, and the haze is set to 6.5%. Thereby, each function of permeability, a Newton ring prevention function, and intensity is not impaired, it is exhibited in good balance, and maintenance and improvement of visibility can be aimed at. The contamination prevention layer 6 may be made of a fluorine resin.

  Next, a modification of the second embodiment will be described. In the contamination prevention layer 6 according to the modified example, a metal such as silver and an inorganic antibacterial agent supported on zeolite, silica gel, apatite and the like are mixed. In addition, a photocatalyst (deodorant active substance) containing metal oxide such as zinc oxide, tungsten trioxide, cerium oxide and titanium oxide or phthaloanine is mixed. Antibacterial and deodorizing can be realized by an inorganic antibacterial agent and a photocatalyst. The photocatalyst is preferably titanium oxide from the viewpoint of structural stability and photocatalytic activity. Since the pollution prevention layer 6 contains an inorganic antibacterial agent or a photocatalyst, it is excellent in antibacterial properties and deodorizing properties and can keep the protective body clean. Therefore, the user's hygiene can be improved.

  In addition, the structure same as Embodiment 1 among the structures of the protector which concerns on Embodiment 2 attaches | subjects the same code | symbol, and abbreviate | omits the detailed description.

(Embodiment 3)
Hereinafter, the present invention will be described in detail with reference to the drawings showing a protector according to Embodiment 3. FIG. 10 is a process diagram showing the production process of the protector.

  As shown in FIG. 10F, the protector is provided on the entire front surface of the sheet 1 and includes a transparent self-healing layer 7 that repairs scratches. The self-healing layer 7 is made of a crosslinked polyurethane resin having a high elastic coefficient. For example, it consists of a diuret or polyisocyanate burette type urethane in aliphatic or cycloaliphatic, and a cross-linked polyurethane resin such as polyurethane obtained from isocyanate. When an object scratches the self-healing layer 7, it is visually recognized as a scratch on the surface. A portion that is visually recognized as being scratched is depressed by elasticity, but is not destroyed. The recessed portion recovers with time due to the elastic restoring force, and the scratch disappears.

  Next, the manufacturing process of a protector is demonstrated. As shown in FIG. 10A, first, the sheet material 100 is installed. Next, as shown in FIG. 10B, a liquid cross-linked polyurethane resin material is applied to the entire front surface of the original sheet 100 and cured. The cured resin material becomes the self-healing layer 7. Thereafter, similarly to the first or second embodiment, the decorative portion 2, the adhesive portion 3, and the film 4 are sequentially provided on the back surface of the sheet original fabric 100. And the sheet | seat original fabric 100 is punched out, and the several protection body which provided the some adhesion part 3 in the peripheral part of the one surface of the sheet | seat 1 is manufactured (FIG. 10C-FIG. 10F).

  Since the self-healing layer 7 made of a cross-linked polyurethane resin having a high elastic coefficient is formed on the front surface of the sheet 1, even when an object scratches the front surface of the sheet 1 and a scratch is generated, the scratch disappears with time. Therefore, it is possible to prevent the visibility of the flat display 11 from being hindered by scratches.

  The self-healing layer 7 may include an inorganic antibacterial agent or a photocatalyst. In this case, the self-repairing layer 7 is excellent in antibacterial properties and deodorizing properties, and the protective body can be kept clean.

  Note that, in the configuration of the protector according to the third embodiment, the same reference numerals are given to the same configurations as those in the first or second embodiment, and detailed description thereof is omitted.

(Embodiment 4)
Hereinafter, the present invention will be described in detail with reference to the drawings showing a protector according to a fourth embodiment. FIG. 11 is a process diagram showing the production process of the protector.

As shown in FIG. 11F, a transparent phosphorescent layer 8 having a phosphorescent material is provided between the sheet 1 and the decorative portion 2 on the back surface of the sheet 1. The dimension of the phosphorescent layer 8 corresponds to the decorative portion 2, and the phosphorescent layer 8 is located on the decorative portion 2. The phosphorescent material is, for example, a combination of a phosphorescent pigment and an activation material. The phosphorescent pigment is, for example, zinc sulfide or strontium aluminate. The activator is, for example, a metal ion such as divalent europium ion (Eu ²⁺ ), trivalent dysprosium ion (Dy ³⁺ ), or neodymium ion (Nd ³⁺ ). The combination of the phosphorescent pigment and the activator is excited by light in the wavelength region of about 200 to 450 nm and emits fluorescence in the wavelength region of about 450 to 600 nm (purple blue to light yellowish green).

  Next, the manufacturing process of a protector is demonstrated. As shown in FIG. 11A, first, the sheet material 100 is installed. Next, as shown in FIG. 11B, a liquid resin mixed with a phosphorescent material is applied to a position corresponding to a frame portion around the flat display 11 and cured. The cured resin becomes the phosphorescent layer 8. Next, as shown in FIG. 11C, the decorative portion 2 is printed on the luminous layer 8 in a grid pattern. And the adhesion part 3 and the film 4 are provided in order, the sheet | seat original fabric 100 is punched out, and the several protection body which provided the some adhesion part 3 in the peripheral part of the one surface of the sheet | seat 1 is manufactured (FIG. 11D-FIG. 11F).

  Since the phosphorescent layer 8 is provided in the decorative portion 2, when the protective body moves from a bright place to a dark place, the protective body emits fluorescence. Therefore, when the tablet terminal 10 with the protector moves from a bright place to a dark place, the user can easily confirm the position of the tablet terminal 10. Moreover, the designability of the tablet-type terminal 10 can be improved.

  The phosphorescent layer 8 may be provided on the front surface of the sheet 1. A contamination prevention layer 6 or a self-healing layer 7 may be provided on the entire front surface of the sheet 1, and an inorganic antibacterial agent or a photocatalyst may be mixed in these layers. When the contamination prevention layer 6 or the self-healing layer 7 is provided on the front surface of the sheet 1, the phosphorescent layer 8 may be provided on the front surface or the back surface of these layers.

  In addition, the structure same as Embodiment 1-3 among the structure of the protector which concerns on Embodiment 4 attaches | subjects the same code | symbol, and abbreviate | omits the detailed description.

(Embodiment 5)
Hereinafter, the present invention will be described in detail with reference to the drawings showing a protector according to a fifth embodiment. FIG. 12 is a process diagram showing the production process of the protector.

As shown in FIG. 12F, the half mirror layer 9 is provided on the back surface of the sheet 1. The half mirror layer 9 is, for example, a metal half mirror deposited with a thin metal film (silver, aluminum, etc.) or a dielectric half mirror in which high refractive index films and low refractive index films are alternately stacked. The combination of the high refractive index film and the low refractive index film is, for example, a combination of a TiO ₂ film and an SiO ₂ film. The metal half mirror or the dielectric half mirror is formed by EB (Electron Beam) vapor deposition or sputtering. The half mirror layer 9 transmits light from the back side and reflects light from the front side.

  Next, the manufacturing process of a protector is demonstrated. As shown in FIG. 12A, first, the sheet material 100 is installed. Next, as shown in FIG. 12B, the half mirror layer 9 is formed. Thereafter, the decorative portion 2, the adhesive portion 3, and the film 4 are sequentially provided on the back surface of the half mirror layer 9. And the sheet | seat original fabric 100 is punched out, and the several protection body which provided the some adhesion part 3 in the peripheral part of the one surface of the sheet | seat 1 is manufactured (FIG. 12C-FIG. 12F).

  Since the half mirror layer 9 transmits light from the back side, the user can visually recognize the image displayed on the flat display 11 when the flat display 11 with the protector is on. When the flat display 11 is turned off, the half mirror layer 9 reflects light from the front side, so that the user can use the flat display 11 with a protective body as a mirror.

  The half mirror layer 9 may be provided on the entire front surface of the sheet 1. The half mirror layer 9 may be formed on a specific portion of the sheet 1. For example, you may form in the center part of the sheet | seat 1. FIG.

  A contamination prevention layer 6 or a self-healing layer 7 may be provided on the entire front surface of the sheet 1, and an inorganic antibacterial agent or a photocatalyst may be mixed in these layers. When the anti-contamination layer 6 or the self-healing layer 7 is provided on the front surface of the sheet 1, the half mirror layer 9 may be provided on the entire back surface of these layers.

  In addition, the structure same as Embodiment 1-4 among the structure of the protector which concerns on Embodiment 5 attaches | subjects the same code | symbol, and abbreviate | omits the detailed description.

  It should be thought that embodiment disclosed this time is an illustration and restrictive at no points. The technical features described in each embodiment can be combined with each other, and the scope of the present invention includes all modifications within the scope of the utility model registration request and the scope equivalent to the scope of the utility model registration request. Is intended.

DESCRIPTION OF SYMBOLS 1 Sheet 1a Notch 2 Decoration part 3 Adhesion part 4 Film 6 Contamination prevention layer 7 Self-healing layer 8 Light storage layer 9 Half mirror layer 10 Tablet-type terminal 11 Flat display 12 Operation part 110 Light transmissive film 111 Cured resin layer 111a Protrusion

Claims (8)

A sheet having translucency, a plurality of adhesive portions spaced apart from each other on one surface of the sheet, and a plurality of protrusions arranged on the one surface of the sheet to prevent the occurrence of Newton rings. In a protector that protects the display surface by adhering the adhesive portion to a peripheral portion of the display surface that displays an image,
A protector, wherein a distance between the protrusions is shorter than a wavelength of visible light. The protector according to claim 1, wherein the protrusion has a conical shape, and the plurality of protrusions constitute a moth-eye structure.   The protective body according to claim 1 or 2, wherein a contamination prevention layer for preventing contamination is provided on the other surface side of the sheet.   The protective body according to any one of claims 1 to 3, wherein a layer having an antibacterial or deodorant material is provided on the other side of the sheet.   The protective body according to any one of claims 1 to 3, wherein a self-healing layer for repairing a scratch is provided on the other surface side of the sheet.   The protective body according to any one of claims 1 to 5, wherein a phosphorescent layer having a phosphorescent material is provided on one side or the other side of the sheet.   The protective body according to claim 1, wherein a half mirror layer is provided on one side or the other side of the sheet.   The protector according to any one of claims 1 to 7, wherein the sheet transmits light that has entered at an incident angle equal to or smaller than a predetermined angle.

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