JP5131622B2 - Surface substrate with antiglare and self-healing properties - Google Patents

Description

  The present invention relates to a surface substrate having anti-glare property and self-repairing property, which is used by being attached to the front surface of, for example, a liquid crystal display of a mobile phone.

Conventionally, as a surface material for protecting a screen of a liquid crystal display or the like of a mobile phone, for example, a glass plate or a resin plate having a hard coat layer formed on the surface is generally used.
In addition, a transparent film is also used, thereby preventing the screen of the liquid crystal display from being directly stained or damaged.
Such a film is coated with a pressure-sensitive adhesive, and can be attached and detached as needed by the user, such as replacement according to damage to the film itself.

However, such a resin plate and film have two problems.
One is that it has a function as an anti-damage material, but it cannot be repaired for its own damage. Therefore, if damage occurs frequently, the transparency of the resin plate and the film itself is lost, and the screen of the liquid crystal display Becomes difficult to see and needs to be replaced with a new film.
The other is that the transparent resin plate and film have no anti-glare property, and the liquid crystal display becomes difficult to see due to reflection with respect to vision at a predetermined angle.

In order to solve such problems, surface substrates having antiglare properties and self-repairing properties have been proposed.
That is, for example, it is a surface material that automatically repairs damage applied to the film and also has antiglare properties.
Examples of such a technique include the following documents.
JP2007-207091. JP2003-296008A.

  The surface material provided with the antiglare property and the self-repair property described in Patent Document 1 described above is provided with a soft resin layer having a self-repair property on a substrate made of a resin film, and an anti-glare layer is provided thereon. Further, the soft resin layer has a thickness of 5 to 100 μm and the antiglare layer has a thickness of 0.2 to 10 μm, and has a curability for forming a soft resin layer on a glass plate. A cured coating film of 300 μm thickness formed by applying and curing the composition and a cured coating film of the curable composition for forming an antiglare layer formed under the same conditions as that at 20 ° C. using an ultrafine hardness tester, The ratio of Martens hardness (ratio of the cured coating film of the curable composition for forming an antiglare layer to the cured coating film of the curable composition for forming a soft resin layer) as measured in an atmosphere having a relative humidity of 50% is 0. 1 to 10 and a haze value of 0.5 to 40%.

This surface material is advantageous in that it has an anti-glare property and an excellent visibility, has a good writing feeling during pen input, and is excellent in durability.
However, as described above, a soft resin layer having self-repairing properties and an antiglare layer provided thereon must be separately formed on the base material.
Therefore, since the two-layer structure is used, the number of manufacturing processes is increased and the thickness is increased. In particular, there is a problem that it is necessary to select a material in consideration of the compatibility between the antiglare layer and the soft resin layer. It was.

  In view of such problems, the present invention provides a surface base material that can be provided with an anti-glare property and a self-repairing property (not damaged by a wire brush or the like) with a simple structure that is easy to manufacture. Objective.

Here, first, self-repairability means that the surface of the surface substrate is dented once by contact with a wire brush, nail, ballpoint pen, etc. (for example, when used for a liquid crystal screen of a mobile phone) because it is soft. Occurs, but the dent is restored and restored.
Moreover, anti-glare property means the characteristic which prevents the surface from being dazzling and shining and it becomes difficult to see the lower layer, and can ensure visibility.
The term “substantially transparent” means not only complete transparency but also colored transparency that does not impair visibility.

In order to achieve the above object, the surface substrate provided with the antiglare property and the self-repairing property according to the present invention
A surface base material with antiglare and self-healing properties,
A transparent silicone resin layer (2) is provided on the back surface (1A) of the transparent synthetic resin film (1),
The synthetic resin film (1) has a self-repairing property in which the surface weight (1A) of the urethane-based resin and the silicone resin is mixed at 50 to 90 to 50 to 10 and chemically crosslinked by a curing agent. A transparent soft resin layer (4) having,
A thermosetting resin is included in the soft resin layer 4;
A protective film is provided on the back surface 2A of the silicone resin layer 2,
A film-like mat 5 is provided on the surface 4A of the soft resin layer 4,
On the back surface 5A of the mat 5, irregularities 5B having a predetermined pattern with a height difference of 1 to 10 microns are formed on the front surface 4A of the soft resin layer 4.
By pressing and curing from above the mat 5 placed on the surface 4A of the soft resin layer 4, the surface (4A) of the soft resin layer (4) has irregularities of a predetermined pattern with a height difference of 1 to 10 microns (4C ) Is fixedly formed to impart antiglare properties, and thus the single layer of the soft resin layer (4) is configured to have both antiglare properties and self-healing properties. To do.

  According to the surface base material provided with the antiglare property and the self-healing property according to the present invention, the antiglare property and the self-healing property (with a single soft resin layer 2 that is easy to manufacture (one-step application) ( A wire brush or the like is not damaged). In this way, with a single soft resin layer that is easy to manufacture (one-step application), it can be provided with antiglare properties and self-repairing properties (not damaged by a wire brush or the like), and the manufacturing cost And there is no risk of peeling between the two layers during long-term use.

Since the substrate, the soft resin layer on each side, and the silicone resin layer (function to contact the object) are simple, the overall thickness may be, for example, about 130 microns. It can be used, and there is no risk of being bulky in use, and the application is widened.
Moreover, since it is thin like this, even if a small foreign matter such as dust adheres to the silicone resin layer, it is difficult for air to enter.
On the other hand, the conventional anti-glare property and the self-repairing property are made of two separate layers and are provided with two layers, so that the anti-glare property is costly. In addition, there are many possibilities that the straightness of light caused by the two-layer structure is hindered and difficult to see, but these problems are also solved.

In the present invention , a protective film is provided on the back surface 2A of the silicone resin layer 2, a film-like mat 5 is provided on the front surface 4A of the soft resin layer 4, and the soft resin is provided on the back surface 5A of the mat 5. The unevenness 5B having a predetermined pattern is formed so as to provide the antiglare property by fixing the unevenness 4C on the surface 4A of the layer 4, and the single layer of the soft resin layer 4 has the antiglare property and the self-repairing property. It is preferable that it is comprised so that.

Thus, the presence of the protective film 3 prevents the silicone resin layer 2 from adhering to other objects during transportation and sales, and can be peeled off when adhering to the object.
Similarly, by covering the soft resin layer 4 with the mat 5, it is possible to exert a protective function that can prevent damage due to contact with other objects in the middle of conveyance and sale on the soft resin layer 4, It is convenient because it also serves to form the unevenness 4C on the surface 4A of the soft resin layer 4 by the unevenness 5B of the mat 5, that is, imparts anti-glare property, and it is sufficient if the mat 5 is peeled off at the time of use. .

Furthermore, as a form of this invention, it is preferable that the said soft resin layer 4 is comprised with the uniform polymer of urethane type resin and silicone resin.
Thereby, although the soft resin layer 4 can be used as a single layer, it can exhibit good antiglare properties and self-repair properties.

Moreover, it is preferable that the said soft resin layer 4 is a urethane-type resin and a silicone resin mixed by 50-90: 50-10 by weight ratio.
By such a mixing ratio of the materials, the soft resin layer 4 was provided with self-repairing property and could be provided at a low cost.

Furthermore, it is preferable that the soft resin layer 4 contains a thermosetting resin.
Thereby, the anti-glare property can be imparted by a simple process in which the mat 5 provided with the unevenness 5B is heated to the surface of the soft resin layer 4 under a predetermined pressure.

The soft resin layer 4 preferably contains a UV curable resin.
Thereby, the anti-glare property can be imparted to the mat 5 provided with the unevenness 5B with a simple process of simply irradiating the surface of the soft resin layer 4 with UV light under a predetermined pressure.

  Hereinafter, a preferred embodiment of a surface substrate having antiglare property and self-repairing property according to the present invention will be described in detail with reference to the drawings. Here, this surface equipment will be described as the structure of a product when being used by being attached to an object to be used (liquid crystal screen of a mobile phone) 10.

FIG. 1 is a longitudinal sectional view as a conceptual diagram of the surface equipment, and the thickness and the like are exaggerated.
The surface base material provided with the antiglare property and the self-healing property is provided with a substantially transparent silicone resin layer 2 on the back surface 1A of the substantially transparent synthetic resin film 1. A protective film 3 is provided on the back surface 2A, a substantially transparent soft resin layer 4 having self-repairing property is provided on the surface 1B of the synthetic resin film 1, and irregularities 4C are fixed to the surface 4A of the soft resin layer 4 Thus, the single layer of the soft resin layer 4 is configured to have both the antiglare property and the self-repairing property.

Here, as the synthetic resin film 1 (polyethylene terephthalate film), a film having a thickness of 50 microns is used.
The silicone resin layer 2 is applied (rolled) to a thickness of 50 microns on the lower surface of the synthetic resin film 1 here.

Here, the soft resin layer 4 is composed of a uniform polymer of a thermosetting urethane resin and a silicone resin.
The soft resin layer 4 is obtained by mixing urethane resin and silicone resin in a weight ratio of 70:30 and chemically cross-linking with a curing agent.
Here, the mixing ratio of both the urethane-based resin and the silicone resin is 70:30 by weight, but the mixing ratio of both is 50-90: 50-10 by weight. As long as it is within the range, it may be changed as appropriate. Here, the thickness of the soft resin layer 4 is 30 microns.
In addition, it is also possible to replace the existing UV curable resin instead of the urethane-based resin of the thermosetting resin.
FIG. 2 is an enlarged view of a state in which a mat 5 described later is partially peeled off.

Next, FIG. 3 shows a state before the surface base material provided with the antiglare property and the self-repairing property according to the present invention is applied to the object to be used (the liquid crystal screen of the mobile phone) 10, that is, the state of transportation and sales. The implementation state in is shown.
That is, a substantially transparent soft resin having a substantially transparent silicone resin layer 2 on the back surface 1A of the substantially transparent synthetic resin film 1 and having a self-healing property on the surface 1A of the synthetic resin film 1. The soft resin layer 4 is provided with a predetermined pattern of irregularities 4C (height difference of 2 to 10 microns) on the surface 4A of the soft resin layer 4 to impart anti-glare properties. The single layer 4 is configured to have both antiglare properties and self-healing properties, and the following configuration is added.

  First, a protective film 3 is provided on the back surface 2A of the silicone resin layer 2, and a film-like mat 5 is provided on the front surface 4A of the soft resin layer 4. The back surface 5A of the mat 5 is provided with the soft film 3A. Asperity 4C is formed on the surface 4A of the resin layer 4 in a fixed manner so as to impart antiglare property, and a predetermined pattern of unevenness 5B is formed. The single layer of the soft resin layer 4 is antiglare and self-repairing. And is configured to grant

As the protective film 3, a synthetic resin film that can be released from the silicone resin layer 2, for example, PET is used here. Of course, any other synthetic resin film may be used as long as it is another material that can be released.
As the mat 5, a releasable synthetic resin film, for example, PE is used here. In this embodiment, at least the back surface 5A of the mat 5 is embossed (or can be sandblasted or etched) by pressurization and heating in another processing step. In addition, a predetermined pattern, for example, satin-like irregularities 5B (1 to 10 microns in height difference) as in the embodiment is formed.
Therefore, when the mat 5 is placed on the surface 4A of the soft resin layer 4 and pressed to form a surface base material, the surface of the soft resin layer 4 is hardened and the surface 4A has a textured surface 4C (height difference of 1 micron or more). Thus, when the mat 5 is peeled off when it is attached to the object 10 to be used, the light can be interfered in irregular reflection or unevenness, resulting in the soft resin layer 4. The antiglare property can be imparted to the surface.

  Since it is such a structure, the protective film 3 is peeled off from the surface base material of the above-mentioned conveyance and sales process, and is attached to the object 10 (liquid crystal screen of a mobile phone). In a state where the surface 4A of the soft resin layer 4 has irregularities 4C (altitude difference of 1 to 10 microns) having a predetermined pattern (pear texture), it is peeled off from the soft resin layer 4 and used.

  The surface base material of the present invention is a simple single layer anti-glare function while fully functioning as a protective film for liquid crystal screens of mobile phones, personal computers, and other electronic devices that require other screens. And a self-repairing structure, it can be applied to screens of various electronic devices where surface damage is a concern.

It is a vertical side view which shows typically the structure of the surface base material concerning this invention. It is an expansion perspective view of the principal part which shows typically the structure of the surface base material concerning this invention. It is a vertical side view which shows typically the use condition of the surface base material concerning this invention.

Explanation of symbols

1: Synthetic resin film 1A: Back surface of synthetic resin film 1B: Surface of synthetic resin film 2: Silicone resin layer 2A: Back surface of silicone resin layer 3: Protective film 4: Soft resin layer 4A: Surface of soft resin layer 4C: Concavity and convexity 5: Mat 5A: Back surface of mat 5B: Concavity and convexity of mat

Claims (1)

A surface base material with antiglare and self-healing properties,
A transparent silicone resin layer (2) is provided on the back surface (1A) of the transparent synthetic resin film (1),
The synthetic resin film (1) has a self-repairing property in which the surface weight (1A) of the urethane-based resin and the silicone resin is mixed at 50 to 90 to 50 to 10 and chemically crosslinked by a curing agent. A transparent soft resin layer (4) having,
A thermosetting resin is included in the soft resin layer 4;
A protective film is provided on the back surface 2A of the silicone resin layer 2,
A film-like mat 5 is provided on the surface 4A of the soft resin layer 4,
On the back surface 5A of the mat 5, irregularities 5B having a predetermined pattern with a height difference of 1 to 10 microns are formed on the front surface 4A of the soft resin layer 4.
By pressing and curing from above the mat 5 placed on the surface 4A of the soft resin layer 4, the surface (4A) of the soft resin layer (4) has irregularities of a predetermined pattern with a height difference of 1 to 10 microns (4C ) Is fixedly formed to impart antiglare properties, and thus the single layer of the soft resin layer (4) is configured to have both antiglare properties and self-healing properties. Surface substrate with antiglare and self-healing properties.

Images