JP3675752B2 - Peep prevention body for information display body - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is used for an information display body including a mobile phone, a portable information terminal, an encryption number input terminal such as a card, etc., and an information display that makes it impossible or difficult for a third party other than the person to visually recognize the information. The present invention relates to a body peep prevention body.
[0002]
[Prior art]
An information display body including a mobile phone, a portable information terminal (for example, a PDA), an encryption number input terminal such as a card, and the like displays various types of information on a liquid crystal display that is an information display unit based on the operation of the person himself / herself. The main purpose of this information display is to convey information to the person, but when there is a third party beside the person, the information is visible to not only the person but also to the third party. It will be grasped.
[0003]
[Problems to be solved by the invention]
Since the information display body simply displays various information on the liquid crystal display as described above, if there is a third party beside the person, the information can be easily transmitted to the third party. There is a problem that information leakage cannot be effectively prevented. In addition, when operating the information display body, in order to visually recognize the information, unnecessary external light such as sunlight or fluorescent lamps may be blocked, the contrast may be improved, or the range of the visible angle may be adjusted. is there. However, in this case, unless the liquid crystal display is covered with a hand, the information display body is tilted, or the direction of the information display body is changed, good visibility cannot be ensured, which is inconvenient.
[0004]
As means for solving these problems, a method of sticking a peep prevention body made of a sheet or a film to a liquid crystal display of an information display body has been proposed. However, although a simple peeping prevention body can solve the above-mentioned problem to some extent, the visible angle of the peeping prevention body cannot be changed in a wide range, and as a result, there is a high risk of information leakage. In addition, if the degree of adhesion of the peeping prevention body to the liquid crystal display is too strong, the peeping prevention body cannot be easily peeled off in the case of misalignment or the like, and if it is peeled forcibly, the liquid crystal display may be damaged. On the other hand, if the adhesion of the peeping prevention body is too weak, the peeping prevention body peels off from the liquid crystal display within a short period of time, and information leaks.
[0005]
The present invention has been made in view of the above, and prevents leakage of information, and does not particularly cover the liquid crystal display or the like, tilt the information display body, or change the orientation of the information display body in particular. Another object of the present invention is to provide a peep prevention body for an information display body that can grasp information. Another object of the present invention is to provide a peep prevention body for an information display body that can change a visible angle in a wide range and is attached to an information display section with an appropriate force.
[0006]
[Means for Solving the Problems]
In the invention according to claim 1, in order to achieve the above-mentioned problem, an anti-glare layer, a translucent adhesive layer provided on one surface of the anti-glare layer and attached to an information display part of the information display body, Comprising a translucent layer provided on the other surface of the antiglare layer,
The antiglare layer is formed by alternately stacking and integrating transparent silicone rubber sheets and colored silicone rubber sheets, and the joint surfaces of these transparent silicone rubber sheets and colored silicone rubber sheets are made substantially parallel to each other, The sticking surface of the sticking layer is formed as a mirror-like and smooth translucent adhesive surface.
[0007]
The antiglare layer is formed to have a thickness of 0.15 to 0.25 mm, a transparency of 80% or more, a visible angle of 90 ° to 120 °, and a width of the transparent silicone rubber sheet of 100 to 200 μm. The colored silicone rubber sheet is preferably formed to have a width of 10 to 50 μm and the light transmitting layer has a thickness of 0.1 to 0.5 mm. Moreover, the adhesive strength between the information display part of the information display body and the adhesive layer is set to 0.30 to 0.80 N / 25 mm, and the specular glossiness of the light-transmitting adhesive surface of the adhesive layer is 120% or more. It is preferable to do this.
[0008]
Here, it is preferable that each of the antiglare layer, the adhesive layer, and the translucent layer in the claims is substantially a film (including both a film and a sheet). The information display body includes at least a mobile phone, a mobile information terminal, an encryption number input terminal such as a card, and the like. Further, the term “substantially parallel” includes both strictly parallel and those that are recognized as being approximately parallel. Further, the peep prevention body for the information display body is mainly formed in a square or a rectangle, but may be a polygon, a circle, an ellipse or the like. The peripheral part of the peep prevention body may be formed with a plurality of cutouts, or may be a continuous waveform or a mountain shape.
[0009]
According to the invention of claim 1, silicone rubber is excellent in transparency, heat resistance, chemical resistance and the like, and it can be colored arbitrarily by adding pigments or dyes, etc. The anti-glare layer of the peep prevention body for the display body is integrated by alternately stacking transparent silicone rubber sheets and colored silicone rubber sheets, and the joint surfaces of the transparent silicone rubber sheet and colored silicone rubber sheet are substantially parallel to each other. Therefore, unnecessary external light can be blocked. In addition, it is possible to suppress or prevent information from being transmitted to a third party other than the person by blocking various information displayed on the information display unit.
[0010]
According to the second aspect of the present invention, the transparent silicone rubber sheet is formed to have a width of 100 to 200 μm, and the colored silicone rubber sheet is formed to have a width of 10 to 50 μm. Therefore, the visible angle of the peep prevention body for the information display body can be changed in a wide range.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, a peep prevention body for an information display body according to this embodiment includes a thin antiglare layer 1 and the antiglare layer. A thin translucent layer 10 which is laminated and bonded to the back surface of 1 and a thin translucent layer which is laminated and adhered to the surface of the antiglare layer 1 via a translucent silicone adhesive layer 20. 30, the antiglare layer 1, the adhesive layer 10, and the translucent layer 30 are each made into a flexible sheet or film, and the antiglare layer 1 is colored with a plurality of transparent silicone rubber sheets 2. The silicone rubber sheet 3 is formed by alternately stacking and integrating in the horizontal direction, and the joint surfaces of the transparent silicone rubber sheet 2 and the colored silicone rubber sheet 3 are parallel to each other, and a liquid crystal of an information display (not shown) is formed. display And so as to form a smooth translucent adhesive surface 11 in a mirror-like the bonding surface of the adhesive layer 10 which is detachably adhered to.
[0012]
The antiglare layer 1 forms a transparent silicone rubber sheet 2 and a colored silicone rubber sheet 3 by molding a transparent silicone rubber composition and a colored silicone rubber composition into a sheet having a predetermined thickness. The plurality of transparent silicone rubber sheets 2 and the colored silicone rubber sheets 3 are laminated alternately and in multiple layers, and are heated by applying pressure to produce an integral block body, and the block body is sliced. This anti-glare layer 1 is formed to a thickness of 0.15 to 0.25 mm in view of the range of visible angle, translucency, handleability and the like.
[0013]
A commercially available silicone rubber compound is used as the transparent silicone rubber sheet 2. Specifically, a silicone rubber composition, generally called bull rubber, composed of a diorganopolysiloxane whose molecular chain end is blocked with a hydroxysilyl group or vinylsilyl group and an organic peroxide, vinyl bonded to a silicon atom in the molecule A so-called addition-reactive organo compound in which a diorganopolysiloxane having at least two groups is blended with an organohydrogenpolysiloxane having at least three hydrogen atoms bonded to silicon atoms (≡SiH bonds) in the molecule and a platinum catalyst. Examples include silicone rubber compositions.
[0014]
The colored silicone rubber sheet 3 is formed by coloring the silicone rubber composition in black, blue, green, red, or other colors, and is laminated on the transparent silicone rubber sheet 2 from the horizontal horizontal direction in the figure. The The colored silicone rubber sheet 3 is generally one in which a black or red pigment or dye such as carbon black or Bengal is appropriately added to the silicone rubber composition.
In addition, when a black pigment is not added, an arbitrary pigment is added to ensure light shielding properties. However, in this case, since the light shielding properties do not reach the black pigment, a predetermined white pigment is used to obtain light shielding properties. Is added. The amount of the white pigment added is selected so as to produce an arbitrary color tone while ensuring light shielding properties.
[0015]
The width (thickness in the horizontal direction in FIG. 1) of the transparent silicone rubber sheet 2 and the colored silicone rubber sheet 3 can be freely selected, but the transparency and parallel light transmittance are the width / width of the transparent silicone rubber sheet 2. In view of being determined by the ratio of the width of the colored silicone rubber sheet 3, the range of the visible angle is determined by the refractive index and width of the transparent silicone rubber sheet 2, and the thickness of the peep prevention body for the information display body. Selected. Specifically, the transparent silicone rubber sheet 2 has a width of 100 to 200 μm, preferably 120 to 150 μm. The width of the colored silicone rubber sheet 3 is 10 to 50 μm, preferably 10 to 30 μm so as not to adversely affect human vision. When the width of the transparent silicone rubber sheet 2 and the colored silicone rubber sheet 3 is a numerical value, the antiglare layer 1 is transparent and has a parallel light transmittance of about 80% or more, a maximum of 85% or more, and a visible angle of 90 ° to 120 °. Can be formed.
[0016]
As shown in FIG. 1, the adhesive layer 10 is made of, for example, a transparent silicone rubber sheet, and is vulcanized and bonded to the back surface of the antiglare layer 1. The translucent adhesive layer 10 is preferably formed by applying a calender roll or the like to a PET film in a mirror state, for example, because the adhesive surface to be adhered to the liquid crystal display of the information display body is preferably the translucent adhesive surface 11. The sheet is used for sheeting to a thickness of 10 to 30 μm, transferred to the back surface of the antiglare layer 1 and vulcanized and bonded, and then the PET film is peeled off to be integrated with the back surface of the antiglare layer 1. The adhesive strength (JIS K 6256) of the information display body of the adhesive layer 10 to the liquid crystal display is selected from 0.30 to 0.80 N / 25 mm, preferably 0.30 to 0.50 N / 25 mm. Further, the specular glossiness (the glossiness at an incident angle of 60 ° in JIS Z 8741) of the translucent adhesive surface 11 of the adhesive layer 10 is selected to be 120% or more.
[0017]
The silicone adhesive layer 20 is made of a silicone-type adhesive containing a primer. As shown in the figure, the silicone adhesive layer 20 is printed and applied to the back surface of the antiglare layer 1 by a method such as screen printing, or the light transmitting layer 30 is formed. The adhesive surface is printed and applied with a thickness of 10 to 30 μm.
[0018]
As shown in FIG. 1, the translucent layer 30 is made of a highly transparent plastic sheet or plastic film having a heat resistance of at least 120 ° C., and the surface is selectively subjected to antireflection treatment or a hard coat layer is selected. Formed. As a specific material of the translucent layer 30, a polyester having a thickness of about 0.1 to 0.5 mm, preferably about 0.1 to 0.3 mm, and more preferably about 0.1 to 0.2 mm. Polysulfone, polycarbonate and the like are used. With such a material and thickness, a sheet or film excellent in physical strength such as tensile strength and tear strength can be obtained. Moreover, by integrating with the antiglare layer 1, secondary workability such as punching is improved.
[0019]
The peep prevention body for an information display body having such a configuration is formed to a thickness of about 0.15 to 0.5 mm in view of the range of visible angles, translucency, and handleability. More preferably, it is formed in a thickness of about 0.15 to 0.3 mm because it adheres to a liquid crystal display such as a small and thin mobile phone.
[0020]
According to the said structure, since the glare-proof layer 1 of the peep prevention body for information display bodies exhibits an anti-glare effect, even if a third party exists beside the person himself, for example, on the liquid crystal display of the information display body It becomes impossible or extremely difficult for a third party to read and read various information displayed from the side. Therefore, information can be comprehended and transmitted without worrying about leakage of information to third parties and without worrying about peeping. Further, the peep prevention body for the information display body can block unnecessary external light such as sunlight and fluorescent lamps, improve the contrast, or adjust the range of the visible angle. Therefore, good visibility can be effectively secured without covering the liquid crystal display with your hand, tilting the information display, or changing the orientation of the information display, thereby greatly improving operability. It becomes possible to make it.
[0021]
Moreover, since the peep prevention body for the information display body is mainly made of silicone rubber, thermal deformation and generation of decomposition gas do not occur even at high and low temperatures. Further, the antiglare layer 1 is formed with a thickness of 0.15 to 0.25 mm, a transparency of 80% or more, a visible angle of 90 ° to 120 °, and a width of the transparent silicone rubber sheet 2 of 100 to 200 μm. The width of the colored silicone rubber sheet 3 is formed to 10 to 50 μm, so that the range of the visible angle can be adjusted freely, and when inputting from the surface of a liquid crystal display such as a portable information terminal, The touch feeling is not impaired at all, and the effect of preventing damage to the surface of the information display body and preventing peeping can be greatly expected.
[0022]
Moreover, since the peeping prevention body for the information display body is detachably adhered to the liquid crystal display of the information display body, the peeping prevention body for the information display body can be easily attached. As a result, when the surface is dirty, scratched, or when the user wants to enjoy a fashion sensation by changing the color, it can be easily replaced. For example, if the plurality of colored silicone rubber sheets 3 are colored in different colors, not only technical effects but also design effects can be obtained.
[0023]
At this time, the adhesive strength of the adhesive layer 10 to the liquid crystal display is set to 0.30 to 0.80 N / 25 mm, preferably 0.30 to 0.50 N / 25 mm, and the translucent adhesive surface 11 of the adhesive layer 10. If the specular glossiness at 120 is set to 120% or more, the adhesion of the peep prevention body to the liquid crystal display becomes extremely appropriate. Therefore, even in the case of misalignment, the peep prevention body can be easily peeled off and repeatedly attached, and the peep prevention body is not peeled off from the liquid crystal display in a short period of time. Further, when the peeping prevention body is pasted, air is not caught between the liquid crystal display and the adhesive layer 10, and the peeping prevention body can be properly adhered. Furthermore, even if dirt on the peep prevention body adheres to the sticking layer 10, if the sticking layer 10 is made of silicone rubber, the dirt immediately drops due to mirror gloss, and the dirt does not remain.
[0024]
Next, FIG. 2 shows a second embodiment of the present invention. In this case, when the antiglare layer 1 of the peep prevention body is adhered onto the liquid crystal display 40 of the information display body, The striped pattern formed by the transparent silicone rubber sheet 2 and the colored silicone rubber sheet 3 is inclined by rotating it in the direction at a predetermined bias angle.
The predetermined bias angle is preferably 0 to 45 °, and preferably 10 to 30 ° when the information display unit is the liquid crystal display 40. The other parts are the same as those in the above embodiment, and the description thereof is omitted.
[0025]
In this embodiment, the same effect as the above-described embodiment can be expected, and the stripe pattern of the transparent silicone rubber sheet 2 and the colored silicone rubber sheet 3 inclined obliquely and the display of the liquid crystal display 40 interfere with each other. It is clear that the generation of so-called moire fringes can be extremely effectively prevented.
[0026]
【Example】
Example 1
First, a transparent silicone rubber sheet having a thickness of 120 μm was molded using a highly transparent silicone compound SE-1188U (trade name, manufactured by Toray Dow Coining Silicone Co., Ltd.). After forming a transparent silicone rubber sheet, carbon black is added to silicone compound KE-981U (trade name, manufactured by Shin-Etsu Chemical Co., Ltd.) and kneaded uniformly to form a colored silicone rubber sheet having a thickness of 15 μm. The rubber sheet was seated on a transparent silicone rubber sheet, and these were alternately laminated to produce a block body.
[0027]
Next, the block body is heated, cured and cured, and this is sliced on a plane perpendicular to the laminating direction of the transparent silicone rubber sheet and the colored silicone rubber sheet, so that the transparent silicone rubber sheet and the colored silicone rubber sheet are parallel to each other and alternately. An anti-glare layer having a thickness of 2.4 mm was prepared. This antiglare layer is a silicone rubber film having a visible parallel light transmittance of 80% or more and a visible angle of 90 °.
[0028]
Next, a silicone adhesive layer comprising liquid silicone rubber KE-1934A / B [trade name, manufactured by Shin-Etsu Chemical Co., Ltd.] and primer AP-1 [trade name, manufactured by Shin-Etsu Chemical Co., Ltd.] is screened on one side of the antiglare layer. Using a printing machine, it was applied to a thickness of about 30 μm, and a highly transparent translucent layer made of polycarbonate having a thickness of 0.2 mm was integrally bonded to the silicone adhesive layer. The adhesion strength (JIS K 6256) between these antiglare layers and polycarbonate was 15 N / 25 mm.
[0029]
Then, the liquid silicone rubber KE-1934A / B [trade name, manufactured by Shin-Etsu Chemical Co., Ltd.] is applied to the mirror surface side of the PET film to a thickness of about 30 μm using a screen printer, and the other side of the antiglare layer The adhesive layer was heat vulcanized and bonded, and then the PET film was peeled off to form a mirror-like light-transmitting adhesive surface to produce a peep prevention body for an information display body. This silicone rubber, in other words, the specular glossiness (glossiness at an incident angle of 60 ° in JIS Z 8741) of the light-transmitting adhesive surface of the adhesive layer was 140%.
[0030]
When the peep prevention body was obtained in this way, it was cut according to the size of the liquid crystal display of the mobile phone, and this peep prevention body was adhered to the liquid crystal display to display information on the liquid crystal display. The adhesive strength (JIS K 6256) between the liquid crystal display of the mobile phone and the peep prevention body was 0.38 N / 25 mm.
When information was displayed on the liquid crystal display, the information displayed on the liquid crystal display could not be grasped only from the side of about 45 ° of the liquid crystal display which looked black.
On the other hand, the information displayed on the liquid crystal display can be grasped very easily and clearly from the front of the liquid crystal display, and the improvement in visibility was confirmed. Further, the work of peeling the peep prevention body from the liquid crystal display and re-adhering was performed a plurality of times, but there was no problem with the adhesion of the peep prevention body.
[0031]
In addition, when the antiglare layer of the peep prevention body is adhered to the liquid crystal display, the stripe pattern formed by the transparent silicone rubber sheet and the colored silicone rubber sheet is inclined by rotating the antiglare layer horizontally at a bias angle of 20 °. It was. As a result, it was possible to clearly grasp the information displayed on the liquid crystal display from the front without moire fringes.
[0032]
Example 2
A transparent silicone rubber sheet was formed to a thickness of 150 μm, and a colored silicone rubber sheet was formed to a thickness of 15 μm using a white pigment and a red pigment. Regarding the colored silicone rubber sheet, a white pigment and a red pigment were blended at a ratio of 10: 0.1, and kneaded into a transparent silicone rubber to a thickness of 15 μm. Further, a peep prevention body for a light pink information display body was prepared in the same manner as in Example 1 except that the polycarbonate, which is a highly transparent light-transmitting layer, had a thickness of 0.1 mm.
[0033]
After obtaining the peep prevention body for the information display body in this way, it was cut according to the size of the liquid crystal display of the information portable terminal, and this peep prevention body was adhered to the liquid crystal display, and information was displayed on the liquid crystal display. . Then, the information displayed on the liquid crystal display could not be grasped only from the side of about 60 ° of the liquid crystal display, which only appeared pink.
On the other hand, the information displayed on the liquid crystal display can be grasped very easily and clearly from the front of the liquid crystal display, and the improvement in visibility was confirmed. Moreover, although it input with the input pen attached to the portable information terminal from the top of the peep prevention body, there was no sense of incongruity, and it was possible to input with the input pen without causing problems such as malfunction. Furthermore, the surface of the polycarbonate which is a light-transmitting layer was not damaged.
[0034]
【The invention's effect】
As described above, according to the present invention, there is an effect that information leakage can be suppressed and prevented. Further, the displayed information can be grasped relatively effectively without covering the liquid crystal display or the like with a hand, tilting the information display body, or changing the orientation of the information display body. Further, the visible angle of the peep prevention body can be changed in a wide range, and the peep prevention body can be attached to the information display portion of the information display body with an appropriate force and used for a long time.
[Brief description of the drawings]
FIG. 1 is an explanatory view showing an embodiment of a peep prevention body for an information display body according to the present invention.
FIG. 2 is a plan view showing a second embodiment of a peep prevention body for an information display body according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Anti-glare layer 2 Transparent silicone rubber sheet 3 Colored silicone rubber sheet 10 Adhesion layer 11 Translucent adhesive surface 20 Silicone adhesive layer 30 Translucent layer 40 Liquid crystal display (information display part)

Claims (3)

An anti-glare layer, a translucent adhesive layer provided on one surface of the anti-glare layer and attached to an information display portion of the information display body, and a translucent layer provided on the other surface of the anti-glare layer It is a peep prevention body for an information display body consisting of
The antiglare layer is formed by alternately stacking and integrating transparent silicone rubber sheets and colored silicone rubber sheets, and the joint surfaces of these transparent silicone rubber sheets and colored silicone rubber sheets are made substantially parallel to each other, A peep prevention body for an information display body, characterized in that the sticking surface of the sticking layer is formed into a mirror-like smooth translucent adhesive surface. The antiglare layer has a thickness of 0.15 to 0.25 mm, a transparency of 80% or more, a visible angle of 90 ° to 120 °, a width of the transparent silicone rubber sheet of 100 to 200 μm, and the above 2. The peep prevention body for an information display body according to claim 1, wherein the colored silicone rubber sheet has a width of 10 to 50 [mu] m, and the light transmitting layer has a thickness of 0.1 to 0.5 mm. Claims wherein the adhesive strength between the information display part of the information display body and the adhesive layer is 0.30 to 0.80 N / 25 mm, and the specular gloss on the light-transmitting adhesive surface of the adhesive layer is 120% or more. Item 3. A peep prevention body for an information display body according to item 1 or 2.

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