JP2883061B2 - Protective plate for information display unit and device with information display unit having this protective plate - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protection plate for an information display unit and a device having the information display unit having the protection plate.

[0002]

2. Description of the Related Art A small portable electronic device such as a portable telephone, a calculator, an electronic organizer, a computer game machine and a wristwatch is provided with an information display section for generally displaying necessary information to the outside through a liquid crystal display or the like. ing. Among them, for example, in the case of a mobile phone, a liquid crystal information display unit and a push button are provided on the front side, and the push button is protected by an openable cover, but the transparent information display unit is exposed. Often.

As described above, since the information display portion is almost always exposed to the outside, there is a problem in that the information display portion is easily scratched when being taken out or stored in the portable case, which makes it difficult to display various information. . In this case, it is sufficient to replace the transparent display panel on the front side of the information display unit. However, replacing only the display panel requires a great deal of labor and increases costs.

The inventor of the present application has applied a protective plate made of a transparent synthetic resin plate to an information display portion of a portable telephone with an adhesive, and prevented the information display portion from being directly damaged by the protective plate. Has already been proposed (Jpn.
742).

[0005]

In the above prior art,
Since the protective plate is made of a flat hard plastic that hardly deforms even if force is applied by hand, air can easily enter between the display unit and the protective plate when bonding to the information display unit. Was sometimes enclosed in an adhesive, and on the contrary, the information display portion became difficult to see.

In addition, in the case of a protective plate made of hard plastic which is hardly deformed, the impact on the protective plate is transmitted to the information display section almost as it is, so that it cannot be said that the display section is protected from the impact. Was something. On the other hand, when air is sealed between the information display unit and the protection plate as described above, the protection plate may be once peeled off and re-stretched, but the conventional protection plate employs a strong adhesive that is usually used once. Therefore, if the protection plate is re-tensioned, the adhesive strength may be reduced.

In the case of a single-use strong adhesive, the same protective plate can hardly be re-stretched. If the protection plate fails to be bonded, it is necessary to re-stretch a new protective plate, which increases the cost. In addition, even if the adhesive is re-attached to a new protective plate, the adhesive of the previous protective plate may remain on the information display portion and stain the display portion. The present invention has been made in view of the above circumstances, and has been made so that a protection plate can be easily adhered to the information display unit so that air is not sealed between the information display unit and the information display unit can be protected from impact. The first purpose.

A second object of the present invention is to improve the durability of the protective plate by enabling repeated adhesion to the information display section.

[0009]

According to the present invention, the following technical measures have been taken in order to achieve the above object. That is,
The present invention includes a substrate portion made of a transparent resin material attached to an information display portion, and an adhesive portion provided on a back surface of the substrate portion, and a user of a device with an information display portion faces the substrate portion forward.
In the protective plate of the information display unit used for retrofitting the information display unit, the substrate unit has a thickness of 0.5 mm or more.
And Ri Na more deformable and capable recovery elastomer in the out-of-plane direction which is set to 3.0mm or less, the substrate section (12)
A rounded chamfered portion is formed on the outer peripheral edge of the surface of (1).

The "elastomer which can be deformed and restored in an out-of-plane direction" in the present invention is, for example, as shown in FIG. It refers to an elastomer that is elastically deformed so as to be greatly curved from a flat surface, and that the other portion after being curved is restored to the same flat plate shape. In the protection plate of the present invention, since the substrate portion is deformed as described above, if the protection plate curved so that the back surface swells is attached to the information display portion from one end to the other end, information can be obtained. It can be attached while pushing the air between the display unit and the protection plate to the other end side,
This can prevent air from being sealed in the bonding portion.

The thickness of the substrate portion that is deformed as described above is 0.5 mm or more and 3.0 mm or less,
A synthetic resin having a Shore hardness of 20 or more and 40 or less can be employed. In this case, the thickness of the substrate portion is set to 0.
The reason why the thickness is set to 5 mm or more and 3.0 mm or less is that, as a result of various experiments, if the thickness of the substrate is less than 0.5 mm, the Shore hardness becomes larger than 40 and even if the synthetic resin is harder, When the thickness of the substrate portion exceeds 3.0 mm, the Shore hardness becomes less than 20 and the soft synthetic resin becomes softer.
Similarly, it is difficult to deform and restore in the out-of-plane direction described above.

If the thickness of the substrate is not less than 0.5 mm and not more than 3.0 mm, the synthetic resin plate becomes relatively thick. It can also have the function of protecting from Also,
Examples of the material of the substrate portion that deforms as described above include, for example,
Various synthetic resins such as polyurethane resin, vinyl chloride resin, acrylic resin, and epoxy resin can be used. However, the resin has a high Shore hardness of about 35 because of its strong resistance to discoloration, flexibility, elasticity, permeability, and scratch resistance. Polyurethane resins are preferred (claim 5).

Since the substrate portion of such a material is elastically deformed also in the thickness direction, it absorbs an external impact and protects the information display portion from the impact. Furthermore, the present invention is characterized in that the adhesive portion has a tacky adhesive which can repeatedly adhere to the information display portion (claim 3). In this case, since the bonding portion is repeatedly bonded to the information display portion, even if air is sealed or a position shift occurs, and the bonding of the protection plate fails, the protection plate can be re-attached.

Various adhesive rubber-based adhesives such as urethane rubber, silicone rubber, and acrylic rubber can be used as the adhesive capable of repeated adhesion, but the adhesive force is very high and the adhesive force can be adjusted. In addition, urethane rubber is preferable because air bubbles on the adhesive surface are easily removed (claim 6). On the other hand, the adhesive portion employs a fixing film made of a transparent resin material, a sticky adhesive applied to the back surface of the fixing film, and a release sheet provided on the back surface of the sticky adhesive. In this case, by bonding the fixing film to the back surface of the substrate portion, the bonding portion and the substrate portion are integrated (claim 4).

In this case, as the fixing film, various films such as polyester, polyvinyl chloride, acrylic, glass, metal foil, and thin paper can be adopted, but the film is resistant to discoloration, has very little shrinkage due to heat and the like, and has excellent transparency. In this respect, a polyester film is preferable (claim 7). The above-mentioned protective plate can be not only colorless and transparent but also translucent in which the whole or a part is colored. Thus, “transparent” in the present specification is a broad concept including colored translucent.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. 3 and 4 show the protective plate 1 of the present invention.
Shows the mobile phone 2 to which is adhered. The mobile phone 2 has a earpiece 3, a transparent glass or synthetic resin display panel 5 covering an information display section 4 composed of a liquid crystal display on its surface, and various operation buttons 6 to be operated during a call or the like. , 7, 8, a power button (not shown), a dial button opening / closing cover 9, and a mouthpiece 10.

The information display section 4 of the display panel 5
A protective plate 1 according to the present invention is adhered by retrofitting. The protective plate 1 includes a substrate portion 12 made of a transparent resin material adhered to the information display portion 4 and a substrate portion 12 made of a transparent resin material.
And a bonding portion 13 provided on the back surface of the. FIG. 1 (a)
As shown in (b), the substrate portion 12 of the protective plate 1 is made of a transparent synthetic resin plate having a horizontally long substantially square shape and resistant to scratches, and has four rounded corners 12A.
The outer peripheral edge of the surface is a rounded chamfered portion 12B. Therefore, since the chamfered portion 12B of the protection plate 1 hardly gets caught, even if the mobile phone 2 to which the protection plate 1 is retrofitted is frequently put in and out of a pocket or a mobile case, the mobile phone 2 may come off the edge of the protection plate 1 Can be effectively prevented.

In the illustrated example, the protective plate 1 (substrate portion 12) is formed in a flat plate shape, but the surface of the protective plate 1 slightly swells toward the center to provide a magnifying lens function. It may be. In this case, when the protection plate 1 is attached, the display information (numerals, characters, etc.) of the information display unit 4 is enlarged and becomes easy to read. In the present embodiment, the substrate portion 12 is made of an elastomer having sufficient elasticity to largely deform in an out-of-plane direction and restore to a flat shape even after the deformation. That is, as shown in FIG. 1 (c), this elastomer can be elastically deformed such that a part thereof is largely adhered to the information display unit 4 while the other part is largely curved from the display unit 4. Other parts are restored to a flat shape even after bending.

As a result of various experiments, the elastically deformable substrate portion 12 has a thickness of 0.5 mm or more and 3.0 mm or less, and a Shore hardness of 20 or more and 40 or less. It has become clear that the synthetic resin should be used. The reason for this is that the thickness t of the substrate portion 12 is set to 0.
When it is less than 5 mm, even if the Shore hardness is set to be larger than 40 and the synthetic resin is harder, large elastic deformation in the out-of-plane direction as shown in FIG. If the thickness t exceeds 3.0 mm, a large elastic deformation and restoration in the out-of-plane direction as shown in FIG. Because it becomes difficult.

The material of the substrate portion 12 capable of elastic deformation as described above is, for example, a polyurethane resin,
Various synthetic resins such as a vinyl chloride resin, an acrylic resin, and an epoxy resin can be employed. In the present embodiment, a polyurethane resin having a Shore hardness of about 35 is employed. The substrate section 12 may be subjected to a UV cut processing for removing ultraviolet rays, or the surface of the substrate section 12 may be subjected to an antibacterial treatment by an antibacterial coating.

On the other hand, as shown in FIG.
Is a fixing film 14 made of a transparent resin material, and an adhesive 15 applied to the back surface of the fixing film 14.
And a release sheet 16 provided on the back surface of the adhesive 15. That is, the adhesive portion 13 is formed into a three-layered sheet by rubberizing the adhesive 15 on the fixing film 14 and then providing a release sheet 16 on the back surface of the adhesive 15. 14
Is deposited on the back surface of the substrate portion 12 so that the bonding portion 13 and the substrate portion 12 are integrated.

The tacky adhesive 15 of the bonding portion 13 has a property capable of repeatedly bonding to the information display portion 4. Examples of such a bonding agent include urethane rubber,
There are various adhesive rubber-based adhesives such as silicone rubber and acrylic rubber. In this embodiment, the adhesive strength is very high, the adhesive strength can be adjusted, and air bubbles on the adhesive surface are easily removed.
(Product name) was adopted. This product can be used not only as an adhesive but also as an anti-falling agent and as a dust remover for clothing.
In addition to being able to adhere repeatedly and repeatedly, dust and the like adhering to the adhesive surface can be easily removed by washing with water.

On the other hand, the fixing film 14 of the bonding portion 13
Various films such as polyester, polyvinyl chloride, acrylic, glass, metal foil, and thin paper can be used. In the present embodiment, a polyester film is used. This fixing film 14 can also be subjected to a UV cut treatment for removing ultraviolet rays. The release sheet 16 is made of PET.
Uses film.

In order to adhere the protective plate 1 having the above structure to the information display section 4 of the portable telephone 2, the peeling sheet 16 is peeled off from the adhesive section 13 and then the back surface is applied as shown in FIG. What is necessary is just to stick the protection plate 1 curved so that the side may expand to the information display part 4 from one end to the other end. In this case, the protection plate 1 is attached while pushing the air between the information display portion 4 and the protection plate 1 to the other end side, so that air can be prevented from being sealed in the bonding portion 13.

As described above, since the protective plate 1 of the present embodiment can be attached to the bonding portion 13 without encapsulating air by largely deforming the protective plate 1, the user of the portable telephone 2 can use the protective plate 1. Is suitable for use after being attached to the information display section 4. Further, in the present embodiment, since the adhesive 15 that can be repeatedly adhered is provided on the back surface of the substrate portion 12 that can be largely elastically deformed in the out-of-plane direction as described above, the nail is hooked on the edge of the protective plate 1. By pulling, the protection plate 1 can be peeled off while being curved as shown in FIG. 1C, so that there is also an advantage that the protection plate 1 can be peeled off with a small force.

Further, in this embodiment, the Shore hardness is 35
Since the substrate portion 12 made of a polyurethane resin having a certain degree is employed, the substrate portion 12 can be elastically deformed also in the thickness direction to absorb an external impact and protect the information display portion 4 from external impact. it can. Further, since the adhesive 15 of the bonding portion 13 is repeatedly bonded to the information display portion 4, even if air is sealed or a position shift occurs and the bonding of the protective plate 1 fails, the protective plate 1 is not bonded. Can be repainted any number of times. In addition, since the adhesive 15 of the present embodiment can wash its adhesive surface with water, even if there is dust or dirt on the adhesive surface, it can be removed and re-attached.

On the other hand, if the substrate section 12 and / or the fixing film 14 are subjected to a UV cut processing for removing ultraviolet rays, the information display section 4 which is originally susceptible to ultraviolet rays can be protected from ultraviolet rays. Also, the fixing film 14
If characters and designs are printed on the protective plate 1, the characters and designs can be sealed inside the protective plate 1. Note that the protection plate 1 of the present invention can be used not only for the mobile phone 2 but also for various low-power appliances such as a calculator, an electronic organizer, and a computer game machine as long as it has an information display section 4 composed of a liquid crystal display. . Further, the protection plate 1 of the present invention can be used as a protection plate for a glass plate of an analog wristwatch.

[0028]

As described above, according to the present invention,
Since the board is made of an elastomer that can be deformed and restored in the out-of-plane direction, air can be prevented from being sealed in the bonded part, and the protection plate can be easily attached without failure,
Ru can protect the information display unit from impacts. Also book
According to the invention, the outer peripheral edge of the surface of the substrate portion has a rounded surface.
Information display with a protection plate attached since it is a cutout
Frequently put the device in and out of your pocket or carrying case
Effectively prevents the protective plate from peeling off the edges
(Claim 1).

Further, according to the present invention, since the adhesive portion has a sticky adhesive which can be repeatedly adhered to the information display portion, air is sealed or a position shift occurs, so that the adhesion of the protective plate fails. it can be also be able to re-tension the same protective plate again, to provide a protective plate which is excellent in economical efficiency and durability (請
Claim 3 ).

[Brief description of the drawings]

FIG. 1A is a front view of a protection plate, FIG. 1B is a side view thereof, and FIG. 1C is a side view showing a curved state during bonding.

FIG. 2 is an enlarged sectional view of a protection plate.

FIG. 3 is a front view showing a mobile phone to which a protection plate is adhered.

FIG. 4 is a right side view of the mobile phone of FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Protective plate 2 Cellular phone (equipment with an information display part) 4 Information display part 12 Substrate part 13 Adhesive part 14 Fixing film 15 Adhesive adhesive 16 Peeling sheet

Continued on the front page (72) Inventor Koichi Yamada 1-2-54 Nagahata-cho, Yao-shi, Osaka Inside Success Orient Works Co., Ltd. (56) References JP-A-4-32805 (JP, A) JP-A-2 -289892 (JP, A) Japanese Utility Model Sho 59-131787 (JP, U) Registered utility model 3025389 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) G09F 9/00

Claims (8)

(57) [Claims] 1. A substrate section (12) made of a transparent resin material and attached to an information display section (4);
(2) an adhesive portion (13) provided on the back surface to display information.
The user of the device with the unit stores the board unit (12) in the information table.
In a protective plate for an information display unit used for retrofitting to a display unit (4), the substrate unit (12) has a thickness (t) of 0.5 mm or more.
One 3.0mm Ri name from elastomer capable deformation and restoration to set the out-of-plane direction below, a rounded outer peripheral edge of the surface of the substrate portion (12) chamfered
Part (12B) information display section protective plate, characterized that you have been formed. Wherein the substrate portion (12), a Shore hardness of its two
2. The protection plate for an information display unit according to claim 1, wherein the protection plate is made of a synthetic resin having a size of 0 or more and 40 or less. 3. The protection plate for an information display unit according to claim 2, wherein the adhesive unit (13) has a tacky adhesive (15) that can be repeatedly adhered to the information display unit (4). 4. The bonding portion (13) includes a fixing film (14) made of a transparent resin material and the fixing film (1).
4) A pressure-sensitive adhesive (15) applied to the back surface, and a release sheet (1) provided on the back surface of the pressure-sensitive adhesive (15)
6), and the fixing film (14) is provided on the substrate (1).
4. The protection plate for an information display unit according to claim 3, wherein the protection plate is vapor-deposited on the back surface of 2). 5. The protection plate for an information display unit according to claim 1, wherein the substrate portion (12) is made of a polyurethane resin. 6. The protection plate according to claim 1, wherein the adhesive (15) is made of urethane rubber. 7. The protection plate for an information display section according to claim 3, wherein the fixing film (14) is made of a polyester film. 8. A device with an information display, wherein the protection plate (1) according to claim 1 is attached to the information display (4).