JP2019112609A - Transparent face material with adhesive layer, and display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transparent surface material with an adhesive layer, which can easily carry out a laminating work or a peeling work of a display device. A transparent surface material with an adhesive layer of the present invention is provided with a transparent surface material having a first surface and a second surface, a first adhesive layer provided on the first surface, and a second surface. A second adhesive layer, and the transparent surface material includes an exposed portion where the first surface is exposed from the first adhesive layer at the peripheral portion of the first surface, and a second adhesive layer from the second adhesive layer at the peripheral portion of the second surface. At least one of the exposed parts whose surface is exposed is provided. [Selection diagram] Figure 1

Description

  The present invention relates to a transparent surface material with an adhesive layer and a display device.

  In recent years, as one usage form of a display device, a form in which the display device is bonded to a shop window of a store, a wall glass of an office, or the like so that the display surface faces the outside has been considered. According to this aspect, since the passerby can visually recognize the display through the glass from the outside of the store or the office, the display device can be used for a signboard, an advertisement or the like. For example, Patent Document 1 below discloses a configuration in which a display device main body such as a liquid crystal panel is bonded to a window glass via a transparent surface material with an adhesive layer provided with adhesive layers on both sides.

International Publication No. 2015/072380

  However, when performing a bonding operation of the display device using the transparent surface material with the adhesive layer described in Patent Document 1, for example, when the operator holds the end of the transparent surface material with the adhesive layer by hand, the adhesive material Adheres to the hand, which reduces the workability of the bonding operation. Alternatively, even when a worker uses a jig such as a holder for holding a transparent surface material with an adhesive layer when the worker performs a bonding operation, the adhesive material adheres to the jig and the bonding operation is performed. There was a problem that the workability decreased.

  Moreover, after using a display apparatus, for example for the signboard of a shop, an advertisement, etc., a display apparatus may be removed from a window glass depending on the case, and the original condition restoration in a shop may be required. In that case, there is a problem that it is difficult for the worker to peel off the transparent surface material with the adhesive layer from the window glass.

  One aspect of the present invention is a transparent surface with an adhesive layer which can easily perform a bonding operation when bonding a display device to a transparent support such as glass or a peeling operation when peeling from a transparent support. Provide materials. Moreover, one aspect of this invention is provided with the transparent surface material with an adhesion layer, and provides the display apparatus excellent in the display quality.

  The transparent surface material with an adhesive layer according to one aspect of the present invention is provided with a transparent surface material having a first surface and a second surface, a first adhesive layer provided on the first surface, and the second surface. And the transparent surface material is an exposed portion where the first surface is exposed from the first adhesive layer at the peripheral portion of the first surface, and a peripheral portion of the second surface. At least one of the exposed portions where the second surface is exposed from the second adhesive layer is provided.

  In the transparent surface material with an adhesive layer according to one aspect of the present invention, the planar shape of the transparent surface material viewed from the normal direction of the first surface may be rectangular, and the exposed portion is the rectangular It may be a region along at least two of the four sides, and may be provided on a part of each of the two sides.

  In the transparent surface material with an adhesive layer according to one aspect of the present invention, the exposed portion is a region along two mutually opposing sides of the rectangle, and is provided on a part of each of the two sides. Good.

  In the transparent surface material with an adhesive layer according to one aspect of the present invention, the planar shape of the transparent surface material viewed from the normal direction of the first surface may be rectangular, and the exposed portion is the rectangular It may be a region along two long sides facing each other, and may be provided on a part of each of the two sides.

  In the pressure-sensitive adhesive layer-attached transparent surface material according to one aspect of the present invention, the exposed portion may be a region along the four sides of the rectangle, and may be provided on a part of each of the four sides.

  In the transparent surface material with an adhesive layer according to one aspect of the present invention, the planar shape of the transparent surface material viewed from the normal direction of the first surface may be rectangular, and the exposed portion is the rectangular It may be provided at the corner.

  In the transparent surface material with an adhesive layer according to one aspect of the present invention, the first surface is a first flat surface located at a central portion of the transparent surface material and the first flat surface at a peripheral portion of the transparent surface material. And a first inclined surface in contact with an end face perpendicular to the first flat surface, and the second surface is a second flat surface located at a central portion of the transparent surface material; The peripheral portion of the transparent surface material may have a second inclined surface which is inclined with respect to the second flat surface and in contact with an end face perpendicular to the second flat surface, and the exposed portion is the second It may be provided on one inclined surface and the second inclined surface.

  In the pressure-sensitive adhesive layer-carrying transparent surface material according to one aspect of the present invention, the light shielding portion may be provided on any one of the peripheral portion of the first surface and the peripheral portion of the second surface.

  The display device according to one aspect of the present invention comprises a transparent surface material with an adhesive layer according to one aspect of the present invention, a transparent support bonded to the first surface of the transparent surface material with the adhesive layer, and the adhesive And a display device body bonded to the second surface of the layered transparent surface material.

  In the display device according to one aspect of the present invention, the exposed portion may be provided on at least the first surface.

  According to one aspect of the present invention, a pressure-sensitive adhesive layer capable of easily performing a bonding operation when bonding a display device to a transparent support such as a glass plate, or a peeling operation when peeling from a transparent support Can provide a transparent surface material. Further, according to one aspect of the present invention, it is possible to provide a display device having a transparent surface material with an adhesive layer and having excellent display quality.

It is a top view of the transparent surface material with the adhesion layer of 1st Embodiment. It is sectional drawing which follows the A-A 'line | wire of FIG. It is the top view which looked at the transparent surface material with an adhesion layer from the side of the 1st surface. It is sectional drawing of a display apparatus containing the transparent surface material with the adhesion layer of 1st Embodiment. It is an expanded sectional view of B part of FIG. It is the top view which looked at the transparent surface material with the adhesion layer of 2nd Embodiment from the side of the 1st surface. It is a figure which shows an example of the method of bonding a transparent surface material with an adhesion layer to a transparent support body. It is a figure which shows the other example of the method of bonding a transparent surface material with an adhesion layer to a transparent support body. It is the top view which looked at the transparent surface material with the adhesion layer of 3rd Embodiment from the side of the 1st surface. It is the top view which looked at the transparent surface material with the adhesion layer of 4th Embodiment from the side of the 1st surface. It is a figure which shows the problem at the time of manufacture of the conventional transparent surface material with an adhesion layer. It is sectional drawing of the transparent surface material with the adhesion layer of 5th Embodiment. It is a figure which shows the problem at the time of use of the conventional transparent surface material with an adhesion layer.

First Embodiment
Hereinafter, a first embodiment of the present invention will be described using FIGS. 1 to 5.
In each of the following drawings, in order to make each component easy to see, the scale of dimensions may be shown differently depending on the component.

  In the present specification, "transparent" means that all or a part of the display image of the display main body is optically distorted after the face material and the display surface of the display main body are bonded without a gap through the adhesive layer. It means an aspect that can be viewed through the face material with little acceptance. Therefore, even if the surface material absorbs or reflects part of light incident on the surface material from the display main body, or the visible light transmittance of the surface material is low due to optical phase change, etc., the surface If it is possible to visually recognize the image of the display main body with almost no optical distortion through the material, it can be said to be "transparent".

<Transparent surface material with adhesive layer>
FIG. 1 is a plan view of a transparent surface material with an adhesive layer according to a first embodiment. FIG. 2 is a cross-sectional view taken along the line AA 'of FIG. FIG. 3: is the top view which looked at the transparent surface material with an adhesion layer from the side of the 1st surface. In addition, FIG. 3 has shown the state which peeled the 1st protective film and the 2nd protective film from the transparent surface material with the adhesion layer shown in FIG. 1 and FIG.

  As shown in FIG. 1 and FIG. 2, the transparent layer with adhesive layer 1 according to the first embodiment includes the transparent layer 2, the light shielding portion 3, the first adhesive layer 4, the second adhesive layer 5, and the first A first protective film 6 and a second protective film 7 are provided. The light shielding portion 3 is provided at the peripheral portion of the second surface 2 b of the transparent surface material 2. The first adhesive layer 4 is provided on the first surface 2 a of the transparent surface material 2. The second adhesive layer 5 is provided on the second surface 2 b of the transparent surface material 2. The area of the second adhesive layer 5 is smaller than the area of the first adhesive layer 4.

(Transparent material)
The transparent surface material 2 is a member to be a core material of the transparent surface material 1 with the adhesive layer, and is interposed between the display device and the transparent support when the display device main body described later is bonded to the transparent support. It is a plate-like member. Examples of the transparent surface material 2 include a glass plate, a resin plate and the like. Transparent surface materials from the viewpoint of having high light resistance, low birefringence, high planar accuracy, surface scratch resistance, and high mechanical strength, as well as being highly transparent to light emitted from the display device and reflected light It is most preferable to use a glass plate as 2. The use of a glass plate is also preferable from the viewpoint of having high transmittance to light for curing the photocurable resin composition constituting the first adhesive layer 4 and the second adhesive layer 5 as the transparent surface material 2.

  Examples of the glass plate include glass materials such as soda lime glass. Furthermore, as the glass plate, high-permeability glass (white sheet glass) having lower iron content and less bluish color is more preferable. In order to enhance the safety, tempered glass may be used as a surface material. In particular, when using a thin glass plate, it is preferable to use a chemically strengthened glass plate. When bonding the transparent surface material 2 to the transparent support via the first adhesive layer 4, the whole or a part of the transparent surface material 2 may be curved as described later. In that case, it is preferable to use a glass plate to which chemical strengthening has been applied, from the viewpoint of preventing breakage of the transparent surface material 2. Examples of the resin plate include highly transparent resin materials such as polycarbonate and polymethyl methacrylate.

  The transparent surface material 2 may be subjected to surface treatment for improving the interfacial adhesion with the first adhesive layer 4 and the second adhesive layer 5. As a method of surface treatment, for example, a method of treating the surface of the transparent face material 2 with a silane coupling agent, a method of forming a silicon oxide thin film by an oxidation flame with a flame burner, etc. may be mentioned.

  The shape of the transparent surface material 2 may be determined in accordance with the planar shape of the display device main body to be bonded, and as shown in FIG. 1, it is rectangular as an example, and further rectangular. The thickness of the transparent surface material 2 is preferably about 0.1 to 30 mm, more preferably 0.1 to 20 mm, and more preferably 0.2 to 2 mm as long as it is a glass plate from the viewpoint of mechanical strength, transparency and the like. About 0 mm is more preferable. The thickness of the transparent surface material 2 is more preferably about 0.2 to 0.7 mm in order not to make the observer strongly feel the sense that the display is drawn backwards (sense of depth). If it is a resin plate, as for the thickness of the transparent surface material 2, about 0.1-1.0 mm is preferable. The thickness of the transparent surface material 2 is more preferably about 0.1 to 0.3 mm in order to prevent the viewer from feeling the sense of depth of display strongly.

(Light blocking part)
The light shielding portion 3 is a region other than the image display region of the display device main body (region outside the image display region, when the transparent surface material with the adhesive layer of this embodiment is used for bonding the display device main body and the transparent surface material ) Has a function of hiding accessories such as a flexible printed wiring board connected to the display body so as not to be visible.
In the case of the present embodiment, the light shielding portion 3 is provided on the second surface 2 b which is the surface to which the display device main body is to be bonded, of the two surfaces 2 a and 2 b of the transparent surface material 2. As shown in FIG. 1, when viewed in the normal direction of the first surface 2 a of the transparent surface material 2, the light shielding portion 3 is formed in a frame shape along the four edges of the rectangular transparent surface material 2. . The opening area 3h inside the light shielding portion 3 substantially coincides with the image display area of the display body when the display body is bonded. In the case of the present embodiment, there is a possibility that external light may be incident through the exposed portion 2c where the peripheral portion of the first surface and / or the second surface of the transparent surface material 2 is exposed, as shown in FIG. Since it is provided to completely cover the exposed portion 2c, it is possible to prevent external light from being seen by the observer.

  When the transparent surface material 2 is a glass plate, it is preferable to form the light shielding portion 3 using a printing method such as ceramic printing containing a black pigment in that the light shielding property is high. In the case where a chemically strengthened glass plate is used as the transparent surface material 2, the baking temperature of the transparent surface material 2 at the time of printing can be lowered by using an organic material as the light shielding ink. However, the light shielding portion 3 may not necessarily be formed by the printing method. For example, the light shielding portion 3 and the transparent surface material 2 separately manufactured may be bonded. Besides, the light shielding portion 3 can be formed using various thin film forming methods.

(First adhesive layer)
The first adhesive layer 4 bonds the transparent surface material 1 with an adhesive layer to a transparent support such as a window glass. As shown in FIG. 2, the first adhesive layer 4 is provided on the first surface 2 a of the two surfaces 2 a and 2 b of the transparent surface material 2, which is the surface to be bonded to the transparent support. The first adhesive layer 4 is made of a transparent resin sheet obtained by curing a liquid photocurable resin composition or the like described later. A touch sensor (not shown) may be provided between the transparent surface material 1 and the first adhesive layer 4.

  As shown in FIG. 3, the first adhesive layer 4 does not cover the entire area of the first surface 2 a of the transparent surface material 2 and is not provided in a partial region of the first surface 2 a. Specifically, two portions 2c in which the first adhesive layer 4 does not exist are provided in a part of a region along each of two opposing long sides of a rectangular shape having a planar shape of the first surface 2a. There is. Therefore, the transparent surface material 2 has the four parts 2c which the 1st surface 2a exposed from the 1st adhesion layer 4 in the peripheral part of the 1st surface 2a. In the present specification, it is a region where the first adhesive layer 4 does not exist, and a portion 2c where the first surface 2a is exposed from the first adhesive layer 4 and a region where the second adhesive layer 5 described later does not exist The portion 2c where the second surface 2b is exposed from the adhesive layer 5 is referred to as an exposed portion 2c. In FIG. 3, two exposed portions 2 c are provided apart from each other along the upper long side of the first surface 2 a. Similarly, two exposed portions 2c are provided apart from each other along the lower long side of the first surface 2a.

  The width W of the exposed portion 2c (the dimension in the short side direction of the first surface) is, for example, about 1 to 5 mm. The length L of the exposed portion 2c (the dimension in the long side direction of the first surface) is, for example, about 10 to 30 mm. The size of the exposed portion 2c is such that the finger does not touch the first adhesive layer 4 much when an operator handling the adhesive layer provided transparent surface material 1 puts the hand on the end face 2f of the adhesive layer provided transparent surface material 2 It is desirable that Further, in the present embodiment, the shape of the exposed portion 2c is a rectangular shape, but may be another shape such as a polygonal shape or a semicircular shape, or may be an irregular shape.

  The first adhesive layer 4 is obtained by curing the photocurable resin composition, the thermosetting resin composition, the light and thermosetting resin composition, and the like. The "photocurable resin composition" means a resin composition which can be cured by exposure to light. The "thermosetting resin composition" means a resin composition which can be cured by heating. The "light and thermosetting resin composition" means a resin composition that can be cured by exposure and heating. "Exposure" means irradiation with light such as ultraviolet light. As the curable composition, a photocurable resin composition is preferable in that it can be cured at a low temperature and the curing rate is fast.

The storage shear modulus at 25 ° C. and a frequency of 1 Hz of the first adhesive layer 4 is preferably in the range of 5 × 10 ² to 1 × 10 ⁷ Pa, and in the range of 1 × 10 ³ to 1 × 10 ⁶ Pa It is more preferable that If the storage shear elastic modulus of the first adhesive layer 4 is 5 × 10 ² Pa or more, it is easy to maintain the shape of the first adhesive layer 4. If the storage shear elastic modulus of the first adhesive layer 4 is 5 × 10 ² Pa or more, the transparent surface material 2 and the member bonded to the second adhesive layer 5 of the transparent surface material 2 can be used as a transparent support. It is preferable in that it can be sufficiently fixed, and when bonding the transparent surface material 1 with the pressure-sensitive adhesive layer and the transparent support, the first pressure-sensitive adhesive layer 4 is not easily deformed by pressure or the like at the time of bonding. On the other hand, if the storage shear elastic modulus of the first adhesive layer 4 is 1 × 10 ⁷ Pa or less, even if air bubbles are generated during bonding of the transparent surface material 1 with the adhesive layer to the transparent support, the air bubbles are short. It is preferable at the point which lose | disappears in time and is hard to remain | survive.

  About 0.1-2.0 mm is preferable and, as for the thickness of the 1st adhesion layer 4, about 0.2-1.0 mm is more preferable. If the thickness of the first adhesive layer 4 is 0.1 mm or more, the first adhesive layer 4 can effectively buffer an impact or the like due to an external force from the transparent support side, thereby protecting the display device main body. In addition, even if foreign matter not exceeding the thickness of the first adhesive layer 4 is mixed between the transparent support and the transparent surface material 1 with the adhesive layer, the thickness of the first adhesive layer 4 does not change significantly. , Less impact on light transmission performance. If the thickness of the first adhesive layer 4 is 2.0 mm or less, it is easy to bond the transparent surface material 2 to the transparent support via the first adhesive layer 4 and the entire thickness of the display device is unnecessarily thick. It does not.

The photocurable resin composition is preferably a non-solvent type in that it is not necessary to carry out heating for removing the solvent. The "solvent-free type" means that the solvent is not contained or the content ratio of the solvent is 5% by mass or less based on the total mass (100% by mass) of the photocurable resin composition. The term "solvent" means a liquid having a boiling point of 150 ° C. or less (volatile diluent).
It is most preferable that the photocurable resin composition does not contain a solvent in that the drying step can be omitted and the time and energy can be saved.
The curable composition typically contains a curable compound (A) having a curable group and a photopolymerization initiator (B). If necessary, other non-curable components other than the photopolymerization initiator (B) may be included. Examples of the non-curable component include non-curable polymer (C), chain transfer agent (D), and other additives.
As a curable compound (A), compounds, such as an acryl type, silicone type, urethane acrylate type, an epoxy type, are mentioned. Among them, the curable compound (A) is preferably a silicone type or a urethane acrylate type in that the storage elastic modulus G ′ of the adhesive layer 30 can be easily adjusted to 5 × 10 ² to 1 × 10 ⁷ Pa. Furthermore, as for a curable compound (A), a urethane acrylate type is more preferable at the point which is easy to adjust the gel fraction of the adhesion layer 30 to 1 to 50%.

(2nd adhesive layer)
The second adhesive layer 5 bonds the transparent layer 1 with adhesive layer to the display device main body. The second adhesive layer 5 is provided on the second surface 2 b of the two surfaces 2 a and 2 b of the transparent surface material 2, which is the surface to be bonded to the display device main body. As described above, the area of the second adhesive layer 5 is smaller than the area of the first adhesive layer 4. Specifically, while the first adhesive layer 4 is provided on the entire area of the first surface 2a excluding the four exposed portions 2c, the second adhesive layer 5 has a rectangular shape having a planar shape of the second surface 2b. It is provided at the center of the frame and not at the peripheral edge along the four sides of the rectangle.

  The constituent material of the second adhesive layer 5 may be the same as the constituent material of the first adhesive layer 4 or may be different from the constituent material of the first adhesive layer 4. Since the second adhesive layer 5 is bonded to the display panel of the display device, it is preferable that the second adhesive layer 5 can be bonded without leaving a void at a smaller bonding pressure so as not to adversely affect the display panel. Therefore, methods such as increasing the content of the non-hardening component in the curable compound, adjusting the content of the chain transfer agent, etc. are adopted. Further, the second adhesive layer 5 may contain an ultraviolet absorber smaller in amount than the first adhesive layer 4 because external light transmitted through the first adhesive layer 4 and the transparent surface material 2 is incident.

  The thickness of the second adhesive layer 5 may be the same as the thickness of the first adhesive layer 4 or may be different from the thickness of the first adhesive layer 4. Specifically, the second adhesive layer 5 may be thinner than the first adhesive layer 4, and for example, the thickness of the second adhesive layer 5 is about half of the thickness of the first adhesive layer 4. May be The reason is that the second adhesive layer 5 interposed between the display device main body and the transparent surface material is, for example, buffer of about the first adhesive layer 4 interposed between the transparent support such as window glass and the transparent surface material. Sex is not required.

  The storage shear modulus of the second adhesive layer 5 may be the same as the storage shear modulus of the first adhesive layer 4 or may be different from the storage shear modulus of the first adhesive layer 4. Since the second adhesive layer 5 is in direct contact with the display device, when there is a possibility that the uniformity of the displayed image may be impaired when bonding the transparent surface material to the display surface, as in a liquid crystal display device of IPS mode, for example. It is preferable to take measures such as increasing the thickness of the second adhesive layer 5 using a constituent material capable of forming an adhesive layer having a smaller elastic modulus.

  As shown in FIG. 2, the second adhesive layer 5 planarly overlaps a part of the second surface 2 b of the transparent surface material 2 surrounded by the frame-shaped light shielding portion 3 and a part of the light shielding portion 3. It is provided over the area. Since the second adhesive layer 5 is bonded to a portion corresponding to the image display area of the display device main body, the second adhesive layer 5 is provided only in the area surrounded by the light shielding portion 3, that is, only in the area inside the light shielding portion 3 Good. However, as in the present embodiment, when the second adhesive layer 5 planarly overlaps with a portion of the light shielding portion 3, the region in which the second adhesive layer 5 planarly overlaps with a portion of the light shielding portion 3 is the second It functions as an alignment margin when aligning the adhesive layer 5 and the light shielding portion 3. Therefore, even if the positional alignment between the second adhesive layer 5 and the light shielding portion 3 is somewhat shifted, the second adhesive layer 5 is easily formed in the region surrounded by the light shielding portion 3. As a result, the display device main body is fixed to the transparent surface material 2 with sufficiently high strength, and the edge of the second adhesive layer 5 is hidden by the light shielding portion 3 and the edge of the second adhesive layer 5 is visible. Does not occur.

(First protective film and second protective film)
The first protective film 6 protects the first adhesive layer 4 when the transparent surface material 1 with an adhesive layer is not in use, and is peeled from the first adhesive layer 4 when in use. Similarly, the second protective film 7 protects the second adhesive layer 5 when the transparent surface material 1 with an adhesive layer is not in use, and is peeled from the second adhesive layer 5 when in use. Therefore, the first protective film 6 and the second protective film 7 are required to be in close contact with each other to such an extent that they can be easily peeled off from the first adhesive layer 4 or the second adhesive layer 5. From this point, as the first protective film 6 and the second protective film 7, a base film having relatively low adhesiveness made of polyethylene, polypropylene, fluorine resin or the like contacts the first adhesive layer 4 or the second adhesive layer 5. It is preferable to use a protective film.

  The adhesive force of the adhesive surface of the first protective film 6 and the second protective film 7 is preferably 0.01 to 1 N in a 50 mm wide test body in a 180 degree peeling test at a peeling speed of 300 mm / min against an acrylic plate, 0 More preferred is .02 to 0.6N. Although the suitable thickness of the first protective film 6 or the second protective film 7 varies depending on the resin used, it is preferably 0.03 to 0.2 mm when using a relatively flexible film such as polyethylene, polypropylene, etc. More preferably, .06 to 0.1 mm. When the thickness is 0.04 mm or more, deformation of the protective film can be suppressed when peeling the protective film from the adhesive layer. When the thickness is 0.2 mm or less, the protective film is easily bent at the time of peeling and easily peeled.

  In order to further facilitate peeling from the first adhesive layer 4 and the second adhesive layer 5, the first protective film 6 and the second protective film 7 do not adversely affect the first adhesive layer 4 and the second adhesive layer 5. Within the range, a release agent such as silicone may be applied. The first protective film 6 having a size larger than that of the transparent surface material 2 so that the end portions of the first protective film 6 and the second protective film 7 can be easily held at the time of peeling from the first adhesive layer 4 and the second adhesive layer 5. It is preferable to use the second protective film 7 and the second protective film 7.

(Display device)
FIG. 4 is a cross-sectional view of a display including the adhesive layer-attached transparent surface material 1 of the first embodiment. FIG. 5 is an enlarged cross-sectional view of a portion B of FIG.

As shown in FIGS. 4 and 5, the display device 10 according to the first embodiment includes a display device main body 11, a transparent surface material 1 with an adhesive layer, and a transparent support 12. The transparent support 12 is bonded to the first surface 1 a of the pressure-sensitive adhesive layer-carrying transparent surface material 1 provided with the first pressure-sensitive adhesive layer 4. The display device main body 11 is bonded to the second surface 1 b of the transparent surface material 1 with the adhesive layer.
In the first embodiment, the transparent support 12 is not particularly limited as long as it has a certain supporting force. For example, a window glass used for a store, an office, etc. is used. The display device main body 11 is, for example, a liquid crystal display device. In the pressure-sensitive adhesive layer-carrying transparent surface material 1, the first protective film 6 and the second protective film 7 are peeled from the pressure-sensitive adhesive layer-carrying transparent surface material 1 shown in FIG. 2. The transparent surface material 2 is bonded to the transparent support 12 via the first adhesive layer 4. The display device main body 11 is bonded to the transparent surface material 2 via the second adhesive layer 5. In addition, you may use the transparent surface material 1 with the adhesion layer which provided the touch sensor (not shown) in the transparent support 12 side of the transparent surface material 2. FIG. In that case, the display device 10 can be operated by touching the transparent support 12 from the outside.
At this time, a lenticular sheet may be used as the transparent support 12. The lenticular sheet has a lenticular lens on the surface on the light incident side (the first adhesive layer 4 side), and is a diffusion sheet for spreading the display light in the direction perpendicular to the surface on the light emission side (observer side) Is generally used. By using a lenticular sheet as the transparent support 12, it is possible to control the spread of a display image, and also to give a stereoscopic effect to the display image.

  As shown in FIG. 5, the display device main body 11 includes a liquid crystal panel 14, a pair of polarizing plates 15 and 16, a backlight 17 (illumination device), a frame 18, and a case 19. The liquid crystal panel 14 includes a pair of glass substrates 21 and 22 and a liquid crystal (not shown) sealed between the glass substrates 21 and 22. The driving method of the liquid crystal panel 14 is not particularly limited, and examples thereof include a liquid crystal panel of a lateral electric field type such as In-Plane Switching. The pair of glass substrates 21 and 22 is composed of a TFT element substrate provided with thin film transistors (TFTs) and a color filter substrate provided with a color filter.

  The pair of polarizing plates 15 and 16 are bonded to both sides of the liquid crystal panel 14 so as to sandwich the liquid crystal panel 14. In addition, an optical film such as a retardation plate may be disposed between the polarizing plates 15 and 16 and the liquid crystal panel 14. Of the pair of polarizing plates 15 and 16, the polarizing plate 16 located on the opposite side to the backlight 17 is bonded to the transparent surface material 2 via the second adhesive layer 5, whereby the liquid crystal panel 14 is a transparent support It is fixed to twelve.

  The backlight 17 includes a light emitting element 23 such as a light emitting diode (LED), a light guide plate 24, a plurality of optical films 25 such as a prism sheet and a light diffusion sheet, and a mirror 26. The light emitted from the light emitting element 23 is incident on the light guide plate 24 and is reflected by the mirror 26 while being guided inside, and is emitted toward the liquid crystal panel 14 through the plurality of optical films 25. The plurality of optical films 25 have a function of equalizing the intensity of light emitted from the light guide plate 24. Therefore, the plurality of optical films 25 and the liquid crystal panel 14 are arranged at intervals.

  The liquid crystal panel 14 is supported by the transparent support 12 by bonding the portion of the image display area of the liquid crystal panel 14 to the transparent support 12 through the adhesive layer-attached transparent surface member 1 because the liquid crystal panel 14 is relatively lightweight. Ru. However, since the weight of the backlight 17 is large, even if the liquid crystal panel 14 and the backlight 17 are fixed, the entire display main body 11 is transparent only by bonding the liquid crystal panel 14 to the transparent support 12. It is difficult to support the support 12. Therefore, among the components of the display device main body 11, the backlight 17 needs to be supported by the transparent support 12 separately from the liquid crystal panel 14.

  In the case of the first embodiment, the backlight 17 is fixed to the transparent surface material 1 with the adhesive layer by the angle 28 (supporting member) having an L-shaped cross section as a configuration for supporting the backlight 17 on the transparent support 12 There is. In detail, the angle 28 for fixing the backlight 17 is fixed to the light shielding portion 3 on the second surface 2 b of the transparent surface material 2 by the double-sided adhesive tape 29. The back light 17 is fixed to the frame 18, and the frame 18 is fixed to the case 19. The case 19 is fixed to the angle 28 by a bolt 30. With the above configuration, the backlight 17 is fixed to the transparent support 12 via the transparent surface material 1 with the adhesive layer. As described above, by adopting a configuration in which the angle 28 is fixed to the light shielding portion 3 by the double-sided adhesive tape 29 after exposing a part of the light shielding portion 3, the display device main body 11 including the backlight 17 is firmly fixed. it can.

  As a procedure for bonding the display device main body 11 to the transparent support 12, the first protective film 6 was peeled from the transparent surface material 1 with the adhesive layer, and the transparent surface material 1 with the adhesive layer was bonded to the transparent support 12 Thereafter, the second protective film 7 may be peeled off, and the display device main body 11 may be bonded onto the adhesive layer-attached transparent surface material 1 bonded to the transparent support 12. Alternatively, after peeling the second protective film 7 from the adhesive layer provided transparent surface material 1 and bonding the adhesive layer provided transparent surface material 1 to the display device main body 11, the first protective film 6 is peeled off, and the adhesive layer provided transparent The display device main body 11 to which the face material 1 is bonded may be bonded to the transparent support 12.

  At the time of bonding to the transparent support 12, the transparent surface material 1 with an adhesive layer or the transparent surface material 1 with an adhesive layer to which the display device main body 11 is bonded may be bonded while being curved entirely or locally. is there. In that case, it is more preferable to bond only the transparent surface material 1 with an adhesive layer to the transparent support 12 first from the ease of curvature.

  On the other hand, there are also cases where it is desired to peel off the display main body 11 bonded to the transparent support 12 from the transparent support 12. Also in such a case, the bonded product may be peeled while being curved, and the display device main body 11 is first peeled from the transparent surface material 1 with the adhesive layer, and then the transparent surface material 1 with the adhesive layer is transparent support 12 You may peel from this. Therefore, the interfacial adhesion between the first adhesive layer 4 and the transparent support 12 and between the first adhesive layer 4 and the transparent surface material 2 is determined by the second adhesive layer and the display main body 11, and the second adhesive layer and the transparent surface material. It is preferable to make it larger than the interfacial adhesion force of 2. Or you may peel the transparent surface material 1 with the adhesion layer by which the display apparatus main body 11 was first bonded from the transparent support body 12, and peel the transparent surface material 1 with the adhesion layer from the display main body 11 after that.

  Moreover, after peeling the transparent surface material 1 with the adhesive layer, the first adhesive layer 4 does not remain on the transparent support 12, and before the transparent support 12, that is, the window glass bonds the display body 11. It is preferable to be able to recover to the state of For that purpose, the interfacial adhesion between the first adhesive layer 4 and the transparent support 12 is preferably smaller than the interfacial adhesion between the first adhesive layer 4 and the transparent surface material 2. In order to realize such a large and small relationship of adhesion, as a constituent material of the first adhesive layer 4 and the second adhesive layer 5, the ratio of the monomer component in the curable compound (A), the uncured component and the chain It can be adjusted by the content of the transfer agent. When the adherend is a glass plate, the interfacial adhesion can be increased by a method such as suppressing the content of the non-hardening component. In addition, the adhesion to the glass surface can be increased by increasing the content of the chain transfer agent.

(Action and effect)
In the transparent surface material 1 with the adhesive layer of the first embodiment, two exposed portions 2c are provided apart from each other along each of two mutually opposing long sides of the first surface 2a of the transparent surface material 2 There is. Therefore, when performing the work of bonding the transparent surface material 1 with the adhesive layer to the transparent support 12, the work efficiency is improved compared to the conventional case, and the bonding work can be easily performed. For example, when bonding a large adhesive layer-attached transparent surface material 1 to a window glass, it may be considered that two workers hold the first surface 2 a of the adhesive layer-attached transparent surface material 1 downward by hand. . In this case, one worker holds the transparent surface material 1 with the adhesive layer so that a finger is placed on the two exposed portions 2c on the right side shown in FIG. 3, and the other worker works on the two left sides shown in FIG. By holding the transparent surface material 1 with the adhesive layer so that a finger is placed on the exposed portion 2c, there is little possibility that the adhesive will adhere to the operator's hand, and work efficiency can be improved. Thus, the adhesive layer provided transparent surface material 1 of the first embodiment can improve the handling property at the time of transportation, at the time of operation, etc., as compared with the conventional adhesive layer provided transparent surface material.

  In addition, when performing the work of peeling the transparent surface material 1 with the adhesive layer from the transparent support 12, the work efficiency is improved as compared with the prior art, and the peeling work can be easily performed. For example, since the first adhesive layer 4 is provided on the entire area of the first surface 2 a of the transparent surface material 2 in the conventional transparent surface material with the adhesive layer, the work between the transparent surface material 2 and the transparent support 12 There was no space for a person to put in a jig or finger for peeling, and it took time and effort for peeling work. On the other hand, according to the transparent surface material 1 with the adhesive layer of the first embodiment, there is a gap between the transparent surface material 2 and the transparent support 12 in the exposed portion 2c. A tool or a finger can be inserted to peel off the transparent surface material 1 with the adhesive layer from the transparent support 12.

  The display device 10 of the present embodiment is excellent in display quality because it includes the transparent surface material 1 with the adhesive layer, the transparent support 12 and the display device main body 11 described above.

  Further, according to the display device 10 of the first embodiment, since the light shielding portion 3 surrounding the periphery of the image display area is provided in the transparent surface material 1 with the adhesive layer, the liquid crystal panel is not newly provided. It is possible to hide accessories such as wiring members connected to 14. Particularly in the case of the first embodiment, since the light shielding portion 3 is provided on the second surface 2b of the transparent surface material 2, the distance in the depth direction between the light shielding portion 3 and the image display surface is short. Therefore, the display does not look backward with respect to the frame portion formed of the light shielding portion 3, and it is possible to prevent the reduction in the visibility of the display due to the step between the frame portion and the image display surface.

  Note that, instead of the configuration of the first embodiment, for example, the second adhesive layer 5 may be provided over the entire area of the second surface 2 b of the transparent surface material 2. Even in this case, as in the first embodiment described above, if the first surface 2 a of the transparent surface material 2 is provided with the exposed portion, the handling property can be improved.

Second Embodiment
Hereinafter, a second embodiment of the present invention will be described with reference to FIGS.
The basic configuration of the pressure-sensitive adhesive layer-attached transparent surface material of the second embodiment is the same as that of the first embodiment, and the configuration of the exposed portion is different from that of the first embodiment.
FIG. 6: is the top view which looked at the transparent surface material with the adhesion layer of 2nd Embodiment from the 1st surface side. Moreover, FIG. 6 has shown the state which peeled the 1st protective film and the 2nd protective film from the transparent surface material with an adhesion layer. FIG. 7: is a figure which shows one example of the method of bonding a transparent surface material with an adhesion layer to a transparent support body. FIG. 8 is a view showing another example of a method of bonding a transparent surface material with an adhesive layer to a transparent support.
6-8, the same code | symbol is attached | subjected to the same component as drawing used in 1st Embodiment, and detailed description is abbreviate | omitted.

  As shown in FIG. 6, in the transparent surface material 31 with an adhesive layer of the second embodiment, two exposed portions 2c are separated from each other along each of the two long sides of the first surface 2a of the transparent surface material 2 Provided. Further, two exposed portions 2 j are provided apart from each other along one short side of the first surface 2 a of the transparent surface material 2. The shape, size, etc. of the exposed portion 2j along the short side may be the same as the shape, size, etc. of the exposed portion 2c along the long side, or may be different from each other. The other configuration of the transparent surface material 31 with the adhesive layer is the same as that of the first embodiment.

  As one method of bonding the transparent surface material 31 with the adhesive layer to the transparent support 12, as shown in FIG. 7, the transparent surface material 31 with the adhesive layer is curved while being supported by an arbitrary method. There is a method of bonding while pressing on the support 12. In the example of FIG. 7, one end side of the first surface 2 a of the transparent surface material 31 with an adhesive layer is bonded to the transparent support 12 first, and the other end of the first surface 2 a is held by the holder 33 for transparent support By moving the roller 34 in the long side direction from one end of the first surface 2 a to the other end while floating from the body 12, the adhesive layer provided transparent surface material 31 is pressed and bonded to the transparent support 12.

  According to such a method, the entry of air bubbles into the interface between the transparent surface material 31 with the adhesive layer and the transparent support 12 is suppressed, and the transparent surface material 31 with the adhesive layer is uniformly adhered to the transparent support 12 Can match. The direction of moving the roller 34 may be either the long side direction or the short side direction of the transparent surface material 31 with an adhesive layer, but in terms of easy bending of the transparent surface material 31 with an adhesive layer, transparent with an adhesive layer. It is preferable to set it as the long side direction of the face material 31.

  As in the first embodiment, in the transparent surface material 31 with the adhesive layer of the second embodiment, two exposed portions 2c are provided along each of two mutually opposing long sides of the first surface 2a of the transparent surface material 2 Since it is provided, the handling property of the transparent surface material 31 with an adhesive layer can be improved as in the first embodiment.

  Furthermore, since two exposed portions 2j are provided along one short side of the first surface 2a of the transparent surface material 2, as shown in FIG. 7, when the holder 33 is hooked on the exposed portion 2j The adhesion of the adhesive to the holder 33 can be suppressed. Thereby, the bonding operation | work by said method can be done easily.

  Further, even when peeling the adhesive layer provided transparent surface material 31 from the transparent support 12, a jig or a finger is hooked on the exposed portions 2 c and 2 j to apply a force to bend the adhesive layer provided transparent surface material 31. It can be peeled off from the transparent support 12. Also in this case, the adhesive can be prevented from adhering to the jig or the finger, and the peeling operation can be easily performed.

  As another method of bonding the transparent surface material 31 with the adhesive layer to the transparent support, as shown in FIG. 8, the transparent surface material 31 with the adhesive layer is adsorbed to the adsorption jig 35 and the transparent surface with the adhesive layer There is a method of pressing the material 31 together with the suction jig 35 against the transparent support 12 and bonding it. In the case where the suction jig 35 is used, it is preferable that the exposed portion 2 c be provided on the first surface 2 a of the transparent surface material 2 according to the method of causing the transparent surface material 31 with the adhesive layer to be adsorbed to the suction jig 35. In some cases, it is preferable that the exposed portion be provided on the second surface 2 b of the transparent surface material 2.

  When suctioning the transparent surface material 31 with the adhesive layer to the adsorption jig 35, the operator places the transparent surface material 31 with the adhesive layer, for example, on a desk, and removes the adhesive from above the transparent surface material 31 with the adhesive layer. There are a method in which the tool 35 is abutted, and a method in which an operator places the suction jig 35 on a desk, for example, and places the transparent surface material 31 with the adhesive layer on the suction jig 35.

  In the former case, when the adhesive layer provided transparent surface material 31 is placed on a desk, a holder, a finger or the like is in contact with the lower surface of the adhesive layer provided transparent surface material 31, as shown in FIG. The exposed portion 2 c is preferably provided on the surface of the transparent surface material 31 with the adhesive layer opposite to the side facing the suction jig 35, that is, the first surface 2 a of the transparent surface material 2. On the other hand, in the latter case, when mounting the transparent surface material 31 with the adhesive layer on the adsorption jig 35, a holder, a finger or the like is in contact with the lower surface of the transparent surface material 31 with the adhesive layer. In order to do this, the exposed portion is preferably provided on the surface of the transparent surface material 31 with the adhesive layer facing the suction jig 35, that is, the second surface 2b of the transparent surface material 2.

  Regardless of which method is used, the exposed portions 2c and 2j are surfaces opposite to the side facing the suction jig 35 of the transparent surface material 31 with an adhesive layer (transparent It is preferable that at least the first surface 2 a of the transparent surface material 2 is provided on the side facing the support 12).

Third Embodiment
Hereinafter, a third embodiment of the present invention will be described with reference to FIG.
The basic configuration of the adhesive layer-attached transparent surface material of the third embodiment is the same as that of the first embodiment, and the configuration of the exposed portion is different from that of the first embodiment.
FIG. 9: is the top view which looked at the transparent surface material with the adhesion layer of 3rd Embodiment from the 1st surface side. Moreover, FIG. 9 has shown the state which peeled the 1st protective film and the 2nd protective film from the transparent surface material with an adhesion layer.
In FIG. 9, the same components as those in the drawing used in the first embodiment are given the same reference numerals, and the detailed description is omitted.

  As shown in FIG. 9, in the transparent surface material 41 with an adhesive layer of the third embodiment, the exposed portion 2 k sandwiches one long side among four corner portions of the first surface 2 a of the transparent surface material 2. Provided at each of the two corners located at. The exposed portion 2 k has a triangular shape surrounded by long sides and short sides constituting each corner and straight lines forming an angle of 45 ° with these sides. However, the shape of the exposed portion 2k is not limited to a triangle, and may be, for example, a rectangular shape, a fan shape, or the like. Also, the dimensions of the exposed portion 2k are not particularly limited. The other structure of the transparent surface material 41 with an adhesive layer is the same as that of 1st Embodiment.

  In the transparent surface material 41 with an adhesive layer of the third embodiment, since the exposed portions 2k are respectively provided at two corner portions positioned across one long side of the first surface 2a of the transparent surface material 2 The worker can apply a force by hooking a jig or a finger on these exposed portions 2k, and in particular, the workability at the time of performing the peeling operation can be improved.

Fourth Embodiment
Hereinafter, a fourth embodiment of the present invention will be described using FIG. 10 and FIG.
The basic configuration of the pressure-sensitive adhesive layer-attached transparent surface material of the fourth embodiment is the same as that of the first embodiment, and the configuration of the exposed portion is different from that of the first embodiment.
FIG. 10: is the top view which looked at the transparent surface material with the adhesion layer of 4th Embodiment from the side of the 1st surface. Moreover, FIG. 10 has shown the state which peeled the 1st protective film and the 2nd protective film from the transparent surface material with an adhesion layer.
In FIG. 10, the same reference numerals are given to constituent elements common to the drawings used in the first embodiment, and the detailed description will be omitted.

  As shown in FIG. 10, in the transparent surface material 51 with an adhesive layer of the fourth embodiment, the exposed portion 2m is provided in the region along the four sides of the first surface 2a of the transparent surface material 2. The width W1 of the exposed portion on the long side and the width W2 of the exposed portion on the short side may be equal to or different from each other. The other configuration of the transparent surface material 51 with the adhesive layer is the same as that of the first embodiment.

  Also in the present embodiment, the handling property of the transparent surface material 51 with the adhesive layer is improved, and the bonding operation and the peeling operation of the transparent surface material 51 with the adhesive layer can be easily performed. The same effect is obtained.

Moreover, the transparent surface material 51 with an adhesion layer of 4th Embodiment has the following special effects.
When manufacturing the transparent surface material 51 with the adhesive layer, as described in the first embodiment, the first adhesive layer 4 made of a transparent resin sheet is separately prepared, and the first adhesive layer 4 and the transparent surface material 2 Paste together. Here, as shown in FIG. 11, assuming that the exposed portion is not provided, since the first adhesive layer 104 and the transparent surface material 2 have the same size, the first adhesive layer 104 and the transparent surface material 2 are provided. When the first pressure-sensitive adhesive layer 104 and the transparent surface material 2 are misaligned at the time of bonding, there arises a problem that the first pressure-sensitive adhesive layer 104 protrudes to the outside of the transparent surface material 2.

  On the other hand, in the transparent surface material 51 with the adhesive layer of the fourth embodiment, the exposed portion 2m is provided in the region along the four sides of the first surface 2a of the transparent surface material 2, so the exposed portion 2m When the widths W1 and W2 of the first adhesive layer 4 and the transparent surface material 2 are set to be equal to or greater than the alignment error between the first adhesive layer 4 and the transparent surface material 2, the first adhesive layer 4 is bonded to the transparent surface material 2. The first adhesive layer 4 does not protrude to the outside of the transparent surface material 2 even if misalignment between the transparent surface material 2 and 4 occurs in any of the long side direction, the short side direction, or the rotational direction. . In addition to the alignment error between the first adhesive layer 4 and the transparent surface material 2, the first adhesive layer 4 may be a transparent surface material 2 even if a dimensional error occurs in the first adhesive layer 4 or the transparent surface material 2. It can be suppressed outside of the By these effects, the productivity of the transparent surface material 51 with an adhesive layer is improved.

Fifth Embodiment
Hereinafter, a fifth embodiment of the present invention will be described using FIGS. 12 and 13.
The basic configuration of the transparent layer with adhesive layer of the fifth embodiment is the same as that of the first embodiment, and the configurations of the transparent layer and the exposed portion are different from those of the first embodiment.
FIG. 12: is sectional drawing which shows the edge part of the transparent surface material with the adhesion layer of 5th Embodiment.
In FIG. 12, the same components as those in the first embodiment are given the same reference numerals, and the detailed description is omitted.

  As shown in FIG. 12, in the transparent surface material 61 with an adhesive layer of the fifth embodiment, the first surface 9 a of the transparent surface material 9 is transparent with the first flat surface 9 a 1 located at the center of the transparent surface material 9. A first inclined surface 9a2 which is inclined with respect to the first flat surface 9a1 and in contact with the end face 9f perpendicular to the first flat surface 9a1 at the peripheral portion of the face material 9 is provided. Similarly, the second surface 9 b of the transparent surface material 9 is inclined with respect to the second flat surface 9 b 1 at the peripheral portion of the transparent surface material 9 and the second flat surface 9 b 1 located at the central portion of the transparent surface material 9. And a second inclined surface 9b2 in contact with the end face 9f perpendicular to the second flat surface 9b1. In other words, corner portions of the transparent surface material 9 configured by the first surface 9 a and the second surface 9 b of the transparent surface material 9 and the end surface 9 f are chamfered in a planar shape. In addition, although the example of a planar chamfer is shown here, the chamfer in which the corner | angular part was rounded off to curved surface shape may be given to the transparent surface material 9. As shown in FIG.

  In the present embodiment, the exposed portion 9c of the transparent surface material 9 is provided on the first inclined surface 9a2 and the second inclined surface 9b2. That is, the first adhesive layer 4 is provided on the first flat surface 9a1 and not provided on the first inclined surface 9a2. The second adhesive layer 5 is provided on the second flat surface 9b1 and not provided on the second inclined surface 9b2. Therefore, although the illustration of the plan view is omitted in this embodiment, when the transparent surface material 61 with the adhesive layer is viewed from the normal direction of the first flat surface 9a1, the exposed portion 9c is the first surface of the transparent surface material 9. It is provided in the area | region along 4 sides of 9a, and the area | region along 4 sides of the 2nd surface 9b. The other structure of the transparent surface material 61 with the adhesive layer is the same as that of the first embodiment.

  Also in the fifth embodiment, the handling property of the transparent surface material 61 with the adhesive layer is improved, and the bonding operation and the peeling operation of the transparent surface material 61 with the adhesive layer can be easily performed. The same effect as the form can be obtained.

Moreover, the transparent surface material 61 with an adhesion layer of 5th Embodiment has the following special effects.
When using the transparent surface material 61 with the adhesive layer, as described above, the first protective film 6 and the second protective film 7 are peeled off from the transparent surface material 9. Under the present circumstances, as shown in FIG. 13, in the transparent surface material 161 with the adhesion layer of a comparative example, the end surface of the 1st adhesion layer 204 and the 2nd adhesion layer 205 makes a position which makes the same plane as the end surface 9f of the transparent surface material 9. Suppose that it was provided. In this case, when the second protective film 7 is to be peeled off, the second adhesive layer 205 peels off from the transparent surface material 9 in the state of being attached to the second protective film 7 side, and the end of the transparent surface material 9 The second adhesive layer 205 may be lifted from the transparent surface material 9. This problem occurs because the second adhesive layer 205 is not bonded to the transparent surface material 9 at the position where the peeling of the second protective film 7 is to be started (position of reference D). As a result, there occur problems such as a decrease in bonding strength and a deterioration in appearance at the peripheral portion of the transparent surface material 161 with an adhesive layer.

  On the other hand, in the transparent surface material 61 with the adhesive layer of the fifth embodiment, since the exposed portion 9c is provided on the first inclined surface 9a2 and the second inclined surface 9b2 of the transparent surface material 9, the second protection The second adhesive layer 5 is bonded to the transparent surface material 9 at a position where the peeling of the film 7 starts (position of reference D). Therefore, it is suppressed that it peels from the transparent surface material 9 in the state which the 2nd adhesive layer 5 adhered to the 2nd protective film 7 side, and only the 2nd protective film 7 peels from the 2nd adhesive layer 5. As shown in FIG. As a result, it is possible to improve the problems such as a decrease in bonding strength and a deterioration in appearance at the peripheral portion of the transparent surface material 61 with an adhesive layer.

The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the scope of the present invention.
For example, although the example in which the exposed portion of the transparent surface material is mainly provided on the first surface is shown in the above embodiment, the same exposed portion may be provided on the second surface, and the exposed portion is the first It may be provided on both the surface and the second surface.

  Further, in the first embodiment, as shown in FIG. 3, an example is described in which the exposed portion is provided in the region along the two opposing long sides of the transparent surface material, but the transparent surface material faces each other The exposed portion may be provided in the region along the two short sides. Furthermore, the regions do not necessarily have to be the regions along the two opposing sides, and for example, the exposed portions may be provided in the regions along the two adjacent sides. In the case of a large-sized transparent layer with a pressure-sensitive adhesive layer, it is preferable that an exposed portion be provided in the region along two opposing sides, but in the case of a small-sized transparent layer with a pressure-sensitive adhesive layer, two adjacent ones It is also possible to handle the transparent surface material with the adhesive layer using the exposed part of the region along the side of the book.

  Moreover, although the example by which the light-shielding part was provided in the surface at the side of the display apparatus main body of a transparent surface material was given, the light-shielding part may be provided in the surface at the side of the transparent support body of a transparent surface material. In addition, for example, light shielding portions may be provided along two opposing upper and lower or left and right sides.

  Moreover, although the example of the window glass used for a shop or an office etc. was mentioned as a transparent support which comprises a display apparatus, it replaces with a window glass, for example, movable members, such as a glass partition which divides indoors, a transparent support The display main body may be pasted to this as. Furthermore, a lenticular sheet may be used as a transparent support, and the display main body may be bonded to this to configure a stereoscopic image display.

  In addition to the liquid crystal display, an organic EL display, a plasma display, an electronic paper display, or the like may be used as the display device body. In addition, the shape, the number, the arrangement, the material, and the like of each component of the transparent surface material with the adhesive layer and the display device can be appropriately changed without being limited to the above embodiment.

  INDUSTRIAL APPLICABILITY The present invention can be used for various display devices such as liquid crystal displays, organic EL displays, plasma displays, electronic paper displays, and transparent surface materials with an adhesive layer used when pasting them on a transparent support.

  1, 31, 41, 51, 61 ... Transparent surface material with adhesive layer, 2, 9 ... Transparent surface material, 2a, 9a ... 1st surface (of transparent surface material), 2b, 9b ... 1st (of transparent surface material) 2 surface, 2c, 2j, 2k, 2m, 9c ... exposed portion, 3 ... light shielding portion, 4 ... first adhesive layer, 5 ... second adhesive layer, 9a 1 ... first flat surface, 9a 2 ... first inclined surface, 9b 1 ... 2nd flat surface, 9b 2 ... 2nd inclined surface, 10 ... display device, 11 ... display device main body, 12 ... transparent support.

Claims (10)

A transparent surface material having a first surface and a second surface;
A first adhesive layer provided on the first surface;
And a second adhesive layer provided on the second surface,
The transparent surface material is an exposed portion where the first surface is exposed from the first adhesive layer at the peripheral portion of the first surface, and the second surface from the second adhesive layer at the peripheral portion of the second surface A transparent surface material with an adhesive layer comprising at least one of exposed exposed portions. The planar shape of the transparent surface material viewed from the normal direction of the first surface is a rectangle,
The pressure-sensitive adhesive layer-carrying transparent surface material according to claim 1, wherein the exposed portion is a region along at least two of four sides of the rectangle, and is provided on a part of each of the two sides.   The adhesive layer provided transparent surface material according to claim 2, wherein the exposed portion is a region along two mutually opposing sides of the rectangle, and is provided on a part of each of the two sides. The planar shape of the transparent surface material viewed from the normal direction of the first surface is a rectangle,
The pressure-sensitive adhesive layer-carrying transparent surface material according to claim 3, wherein the exposed portion is a region along two mutually opposing long sides of the rectangle and is provided on a part of each of the two sides.   The pressure-sensitive adhesive layer-carrying transparent surface material according to claim 2, wherein the exposed portion is a region along the four sides of the rectangle and is provided on a part of each of the four sides. The planar shape of the transparent surface material viewed from the normal direction of the first surface is a rectangle,
The adhesive layer provided transparent surface material according to claim 1, wherein the exposed portion is provided at a corner of the rectangle. The first surface is a first flat surface located at the central portion of the transparent surface material, and an end face which is inclined with respect to the first flat surface at the peripheral portion of the transparent surface material and is perpendicular to the first flat surface And a first inclined surface in contact with the
The second surface is a second flat surface located at a central portion of the transparent surface material, and an end face which is inclined with respect to the second flat surface at a peripheral portion of the transparent surface material and is perpendicular to the second flat surface And a second inclined surface in contact with the
The adhesive layer provided transparent surface material according to any one of claims 1 to 6, wherein the exposed portion is provided on the first inclined surface and the second inclined surface.   The transparent surface according to any one of claims 1 to 7, wherein a light shielding portion is provided on any one of the peripheral portion of the first surface and the peripheral portion of the second surface. Material. A transparent surface material with an adhesive layer according to claim 8;
A transparent support bonded to the first surface of the transparent surface material with the adhesive layer;
And a display device body bonded to the second surface of the transparent surface material with the adhesive layer.   The display device according to claim 9, wherein the exposed portion is provided at least on the first surface.

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