JP2017021444A - Transparent substrate with display device, and table - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transparent substrate with a display unit, configured to enhance strength without reducing sensitivity of a touch panel.SOLUTION: A transparent substrate includes: a first transparent substrate 11; a touch panel 20 joined to the first transparent substrate 11 via a layer formed of transparent resin 40; a second transparent substrate 12 joined to a surface of the touch panel 20, opposite the first transparent substrate 11, via a layer formed of transparent resin 41; and a display device 30. A surface of the second transparent substrate 12, opposite the touch panel 20, faces a display unit 30a of the display device 30.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a transparent substrate with a display device and a table.

  For example, a configuration in which a display device is bonded to a transparent substrate such as a window glass with an adhesive or the like is disclosed (for example, see Patent Document 1).

JP 2006-132206 A

  In the configuration according to Patent Document 1 described above, for example, when a transparent substrate to which a display device is bonded is used as a table top, the transparent substrate may be bent by the weight of the display device. Therefore, for example, if the transparent substrate is thickened so as not to be bent by the weight of the display device, the sensitivity of the touch panel may be lowered when the touch panel is provided between the transparent substrate and the display device.

  This invention is made | formed in view of the above, Comprising: It aims at raising the intensity | strength of a transparent substrate with a display apparatus, without reducing the sensitivity of a touch panel in a transparent substrate with a display apparatus.

  According to the transparent substrate with a display device of one embodiment of the present invention, the first transparent substrate, the touch panel bonded to the first transparent substrate through a layer made of a transparent resin, and the first transparent substrate of the touch panel, Has a second transparent substrate joined to the opposite surface via a layer made of transparent resin, and a display device, and the surface of the second transparent substrate opposite to the touch panel is the display device. Facing the display.

  According to the transparent substrate with a display device of another aspect of the present invention, a transparent substrate having a thickness of 2 mm or more and 10 mm or less, a touch panel bonded to the transparent substrate, and a display on the opposite side of the transparent substrate of the touch panel. The touch panel and the display unit are bonded via a layer made of a transparent resin having a relative dielectric constant of 4 or more and 6 or less.

  According to the embodiment of the present invention, the strength of the transparent substrate with a display device can be increased without reducing the sensitivity of the touch panel in the transparent substrate with a display device.

It is a figure which illustrates the structure of the transparent substrate with a display apparatus in 1st Embodiment. It is a figure which illustrates other composition of a transparent substrate with a display device in a 1st embodiment. It is a cross-sectional schematic diagram which illustrates the transparent substrate with a display apparatus in 2nd Embodiment. It is a cross-sectional schematic diagram which illustrates the transparent substrate with a display apparatus in 3rd Embodiment. It is a perspective view which illustrates the table in a 4th embodiment.

  Hereinafter, embodiments for carrying out the invention will be described with reference to the drawings. In the drawings, the same components are denoted by the same reference numerals, and redundant description may be omitted.

[First embodiment]
<Transparent substrate with display device>
FIG. 1 is a diagram illustrating a configuration of a transparent substrate 100 with a display device according to the first embodiment. FIG. 1A is a top view of a transparent substrate 100 with a display device. FIG. 1B is a schematic cross-sectional view taken along the line AA in FIG.

  As illustrated in FIG. 1, the transparent substrate 100 with a display device includes a first transparent substrate 11, a second transparent substrate 12, a touch panel 20, and a display device 30. In the following description, the transparent substrate with display 100 may be described with the first transparent substrate 11 side as the upper side and the display device 30 side as the lower side.

(First transparent substrate)
The first transparent substrate 11 is, for example, soda lime glass, aluminosilicate glass, aluminoborosilicate glass, inorganic glass such as alkali-free glass, or organic glass made of polycarbonate resin, acrylic resin, or the like. Moreover, the 1st transparent substrate 11 may be the laminated glass by which the some glass plate was bonded together.

  When the first transparent substrate 11 is inorganic glass, for example, a strengthening process such as a chemical strengthening process or a physical strengthening process may be performed. Further, the surface of the inorganic glass may be subjected to an etching treatment such as hydrofluoric acid to impart antireflection ability.

  The first transparent substrate 11 may be provided with a functional film. Examples of the functional film include an antireflection film made of a silicate, a metal oxide thin film, or a film on which a similar thin film is formed. The antireflection film may be directly formed on the surface of the first transparent substrate 11 by a sputtering method, a vapor deposition method, a wet coating method, or the like, and is formed on the surface of the first transparent substrate 11 by attaching the above-described film. May be. Reflection is suppressed by the antireflection film, and an image displayed on the display device 30 can be seen more clearly from the upper surface side of the transparent substrate 100 with a display device.

  Moreover, as a functional film, it has functions, such as antifouling, water repellency, and oil repellency, which are formed on the surface of the first transparent substrate 11 through vapor deposition, an adhesive layer, etc., as a resin thin film such as fluororesin or silicone resin. It may be a membrane. In particular, a functional film having a fluororesin in the outermost layer is preferable because it can impart antifouling performance and easy cleanliness to the first transparent substrate 11.

  Moreover, the colored layer may be provided in the area | region except the part which opposes the display part 30a of the display apparatus 30 on the 1st transparent substrate 11, for example. The colored layer is formed in at least one predetermined region of the upper surface and the lower surface of the first transparent substrate 11 by, for example, screen printing or the like. In addition, a colored layer may be formed by different methods, such as inkjet printing, for example, and may be formed by bonding a film etc.

  By providing the colored layer on the first transparent substrate 11, for example, the wiring portion of the touch panel 20 and the display device 30 can be hidden so as not to be seen from the upper side of the first transparent substrate 11. Moreover, the designability of the transparent substrate 100 with a display device can be improved by the color and shape of the colored layer.

  In addition, although the 1st transparent substrate 11 in this embodiment is a rectangle, arbitrary shapes other than a rectangle may be sufficient. In addition, the thickness T1 of the first transparent substrate 11 is equal to or greater than the thickness capable of protecting the surface of the touch panel 20 and is less than the thickness that allows the touch panel 20 to function via the first transparent substrate 11. Has been. Specifically, the thickness T1 of the first transparent substrate 11 is preferably not less than 0.5 mm and not more than 5 mm, for example.

  As for the 1st transparent substrate 11, it is preferable that the area of the main surface (upper and lower surfaces in FIG. 1 (B)) is 1.2 times or more of the area of the display part 30a of the display apparatus 30. FIG. By setting the first transparent substrate 11 to such a size, the transparent substrate 100 with a display device can be used in various forms such as a table and a window.

(Touch panel)
The touch panel 20 has substantially the same rectangular shape as the display device 30 when viewed from above. The upper surface of the touch panel 20 is bonded to the lower surface of the first transparent substrate 11 by the transparent resin 40, and the lower surface is bonded to the upper surface of the second transparent substrate 12 by the transparent resin 41.

  The touch panel 20 detects, for example, a position where the operator touches the upper surface of the first transparent substrate 11 with a finger, a touch pen, or the like by using a capacitance method. Note that the touch panel 20 may be another system such as a resistive film system or an electromagnetic induction system, as long as the contact position of the operator can be detected.

(Second transparent substrate)
The second transparent substrate 12 is, for example, soda lime glass, aluminosilicate glass, aluminoborosilicate glass, inorganic glass such as alkali-free glass, or organic glass made of polycarbonate resin, acrylic resin, or the like. Moreover, the 2nd transparent substrate 12 may be the laminated glass by which the some glass plate was bonded together.

  Similar to the first transparent substrate 11, the second transparent substrate 12 may be subjected to a surface strengthening process such as a chemical strengthening process or a physical strengthening process, for example, when it is inorganic glass. Further, the second transparent substrate 12 may be provided with a functional film in the same manner as the first transparent substrate 11.

  The thickness T <b> 2 of the second transparent substrate 12 is not less than a thickness that holds the touch panel 20 and the display device 30 and does not bend, and from the upper surface side of the first transparent substrate 11 to the display unit 30 a of the display device 30. It is formed less than a thickness that makes it difficult to see the displayed image.

  Further, the thickness T2 of the second transparent substrate 12 is greater than or equal to a thickness that allows the touch panel 20 and the display device 30 to be separated from each other, and noise generated in the touch panel 20 due to, for example, the display device 30 or the drive device of the display device 30 can be reduced. It is preferable to be formed.

  Specifically, the thickness T2 of the second transparent substrate 12 is not less than the thickness T1 of the first transparent substrate 11 and is preferably 3 mm or more and 10 mm or less, more preferably 4 mm or more and 8 mm or less. .

  In addition, the second transparent substrate 12 has an area of the main surface (upper and lower surfaces in FIG. 1B) that is 1.2 times or more the area of the display portion 30a of the display device 30, and It is preferable that it is not more than the area of the main surface.

(Display device)
As shown in FIG. 1B, the display device 30 is bonded to the lower surface of the second transparent substrate 12 through a layer made of a transparent resin 42. The display device 30 is, for example, a liquid crystal display device, an organic EL display device, a plasma display device, or the like. The display device 30 displays, for example, an image stored in a storage device (not shown) or an image transmitted from a computer connected via a network or the like on the display unit 30a.

  The display unit 30a of the display device 30 according to the present embodiment is rectangular and has a size of 21.5 inches or more diagonally. The display unit 30a of the display device 30 may have an arbitrary shape different from the rectangle.

(Transparent resin)
The transparent resins 40, 41, and 42 are, for example, a cured product of a liquid or film-like curable resin composition. For example, after the uncured liquid curable resin composition is applied to the lower surface of the first transparent substrate 11 and the touch panel 20 is disposed, the liquid curable resin composition is cured, thereby making the touch panel 20 the first transparent substrate. 11 can be bonded to the lower surface of the substrate 11 via a transparent resin 40. The same applies to the case where the touch panel 20 and the second transparent substrate 12 are bonded via the transparent resin 41, and the case where the second transparent substrate 12 and the display device 30 are bonded via the transparent resin 42.

  The first transparent substrate 11, the second transparent substrate 12, and the display device 30 are filled with transparent resins 40, 41, and 42 so that the first transparent substrate 11, the second transparent substrate 12, and the display device 30 are filled with the transparent resin 40, 41, 42. The refraction difference of light transmitted through the touch panel 20 is reduced, and light diffusion in the display unit 30a of the display device 30 is suppressed. Therefore, the image displayed on the display unit 30a of the display device 30 can be clearly seen from the outside.

  The relative dielectric constants of the transparent resins 40, 41, and 42 may all be the same or different. In order to reduce the noise generated in the touch panel 20 due to the display device 30 and the driving device of the display device 30 while increasing the sensitivity of the touch panel 20, the relative dielectric constant of the transparent resin 40 is the relative dielectric constant of the transparent resins 41 and 42. Is preferably larger.

  The transparent resin 40 preferably has a relative dielectric constant of 4 or more and 6 or less in order to increase the sensitivity of the touch panel 20. Further, the transparent resins 41 and 42 preferably have a relative dielectric constant of 1 or more and 4 or less in order to reduce noise generated in the touch panel 20 due to the display device 30 or the driving device of the display device 30. The relative dielectric constant is measured according to JIS C 2138 appendix JA. This is a value measured by the automatic balancing bridge method in accordance with 2.1.

The transparent resins 40, 41, and 42 preferably each have an elastic modulus at 25 ° C. of 10 ³ Pa to 10 ⁵ Pa. Since the transparent resins 40, 41, and 42 have such an elastic modulus, it is relatively easy to form a gap generated in the bonding between the first transparent substrate 11 and the touch panel 20 or the bonding between the second transparent substrate 12 and the display device 30. It is possible to disappear.

Further, when the elastic modulus at 25 ° C. of the transparent resins 40, 41, and 42 is 10 ³ Pa or more, the shape of the applied transparent resin is easily maintained. Therefore, even when the transparent resin is applied relatively thickly, the thickness is kept uniform throughout the transparent resin, and it is difficult for voids to be generated at the interface between the second transparent substrate 12 and the display device 30. In addition, the transparent resins 40, 41, and 42 have a modulus of elasticity of 10 ⁵ Pa or less at 25 ° C., between the first transparent substrate 11 and the touch panel 20, or between the second transparent substrate 12 and the display device 30. This improves the adhesion.

  As thickness of transparent resin 40, 41, 42, 0.03 mm or more and 5 mm or less are respectively preferable, and 0.1 mm or more and 2 mm or less are more preferable. If the thickness of the transparent resins 40, 41, 42 is 0.03 mm or more, for example, when an external force is applied from the upper surface of the first transparent substrate 11, the transparent resin 40 sufficiently reduces the impact due to the external force, and the touch panel. 20 etc. can be protected. Moreover, even if a foreign substance having a dimension less than the thickness of the transparent resins 40, 41, 42 is mixed between the first transparent substrate 11 and the touch panel 20 or between the second transparent substrate 12 and the display device 30. In addition, since the thickness of the transparent resins 40, 41, and 42 does not change, the influence on the visibility due to the mixing of foreign matters is suppressed. Moreover, since the visibility of the display part 30a of the display apparatus 30 falls, it is preferable that the thickness of transparent resin 40, 41, 42 is 5 mm or less.

  As described above, according to the transparent substrate 100 with a display device according to the first embodiment, the strength is improved by having the first transparent substrate 11 and the second transparent substrate 12, and the touch panel 20 and the display device 30 are improved. Deflection due to weight such as is reduced. In addition, by supporting the touch panel 20 and the display device 30 on the second transparent substrate 12, the sensitivity of the touch panel 20 can be maintained by thinning the first transparent substrate 11 covering the touch panel 20. Furthermore, since the 2nd transparent substrate 12 is provided between the touch panel 20 and the display apparatus 30, the noise of the touch panel 20 resulting from the display apparatus 30 reduces, and the position detection precision of the touch panel 20, etc. are maintained.

  In addition, as shown in FIG. 2, the transparent substrate 100 with a display device may be provided with a plurality of touch panels and display devices. FIG. 2A is a top view of the transparent substrate 100 with a display device in which a plurality of touch panels and display devices are provided. 2B and 2C are cross-sectional views taken along line BB in FIG. 2A, respectively.

  In the transparent substrate 100 with a display device shown in FIG. 2, a first display device 31 having a display portion 31 a and a second display device 32 having a display portion 32 a are formed on the lower surface of the second transparent substrate 12 by a transparent resin 40. It is joined.

  The second transparent substrate 12 may be a single substrate as shown in FIG. 2B, or may be provided for each display device as shown in FIG. 2C. Good.

  In the configuration shown in FIG. 2 (B), the second touch panel 21 is positioned on the upper surface of one second transparent substrate 12 at a position corresponding to the first display device 31 and the second position at a position corresponding to the second display device 32. The touch panels 22 are joined to each other. The first transparent substrate 11 is bonded to the upper surfaces of the first touch panel 21 and the second touch panel 22 with a transparent resin 40.

  2C, the second transparent substrate 12 is provided between the first touch panel 21 and the first display device 31 and between the second touch panel 22 and the second display device 32, respectively. Is provided.

  Thus, even if it is the structure with which the touch panel and the display apparatus were provided with two or more, by providing a 2nd transparent substrate between a touch panel and a display apparatus, without reducing the sensitivity of a touch panel in a transparent substrate with a display apparatus. Strength can be increased.

  Furthermore, the transparent substrate 100 with a display device may be provided with, for example, a third transparent substrate between the second transparent substrate 12 and the display device 30, or may be composed of three or more transparent substrates. In such a configuration, it is preferable that the transparent substrates or the transparent substrate and the display surface of the display device 30 are bonded via the layer made of the transparent resin as described above.

[Second Embodiment]
<Transparent substrate with display device>
A second embodiment will be described with reference to the drawings. In addition, about the same component as embodiment already demonstrated, the same code | symbol may be attached | subjected and description may be abbreviate | omitted.

  FIG. 3 is a schematic cross-sectional view illustrating a transparent substrate 200 with a display device according to the second embodiment.

  As illustrated in FIG. 3, the display-equipped transparent substrate 200 includes a transparent substrate 10, a touch panel 20, and a display device 30. Note that a plurality of touch panels and display devices may be provided.

(Transparent substrate)
The transparent substrate 10 is, for example, soda lime glass, aluminosilicate glass, aluminoborosilicate glass, inorganic glass such as non-alkali glass, or organic glass made of polycarbonate resin, acrylic resin, or the like. The transparent substrate 10 may be a laminated glass in which a plurality of glass plates are bonded.

  When the transparent substrate 10 is an inorganic glass, similarly to the first transparent substrate 11 in the first embodiment, a surface strengthening process such as a chemical strengthening process or a physical strengthening process may be performed. The transparent substrate 10 may be provided with a functional film, a colored layer, and the like.

  The plate thickness T3 of the transparent substrate 10 in the second embodiment is preferably 2 mm or more and 10 mm or less. By setting the plate thickness T3 of the transparent substrate 10 within the above range, the deflection of the transparent substrate 10 due to the weight of the display device 30 can be reduced and the touch panel 20 can function.

  The transparent substrate 10 preferably has an area of the main surface (upper and lower surfaces in FIG. 3) that is 1.2 times or more the area of the display unit 30 a of the display device 30. Since the transparent substrate 10 has such a size, the transparent substrate 100 with a display device can be used in various forms such as a table and a window.

  In addition, although the transparent substrate 10 in this embodiment is a rectangle, the transparent substrate 10 may be any shape other than a rectangle.

(Transparent resin)
The transparent substrate 10 and the display device 30 are joined to each other through a transparent resin 43 between the transparent substrate 10 and the display device 30 including at least the display unit 30a. By setting it as such a structure, refraction of the light which permeate | transmits the transparent substrate 10 and the touch panel 20, and the reflected light in the display part 30a of the display apparatus 30 are suppressed. Therefore, it is possible to clearly see the image displayed on the display unit 30 a of the display device 30 from the upper surface side of the transparent substrate 10. Note that the material, physical properties, and the like of the transparent resin 43 are preferably the same as those of the transparent resins 40, 41, and 42 in the first embodiment.

  As described above, according to the transparent substrate 200 with a display device according to the second embodiment, the transparent substrate 10 is not bent by the weight of the display device 30, and the touch panel 20 functions via the transparent substrate 10. Can be made. In addition, it is possible to clearly see the image displayed on the display unit 30a of the display device 30 from the outside.

[Third embodiment]
<Transparent substrate with display device>
A third embodiment will be described with reference to the drawings. In addition, about the same component as embodiment already demonstrated, the same code | symbol may be attached | subjected and description may be abbreviate | omitted.

  FIG. 4 is a schematic cross-sectional view illustrating a transparent substrate 300 with a display device according to the third embodiment.

  In the transparent substrate 300 with a display device according to the third embodiment, a display unit 30a for displaying an image of the display device 30 and a touch panel unit 30b having a touch panel function are integrally provided by, for example, an on-cell method or an in-cell method. Yes. Note that a plurality of display devices may be provided.

  As shown in FIG. 4, in the transparent substrate 300 with a display device, the display device 30 having a display unit 30 a and a touch panel unit 30 b is bonded to the lower surface of the transparent substrate 10 by a transparent resin 43.

  With such a configuration, an image displayed on the display unit 30 a of the display device 30 can be clearly seen from the upper surface side of the transparent substrate 10.

  As described above, in the transparent substrate 300 with a display device according to the third embodiment, the transparent resin 43 is filled between the transparent substrate 10 and the display device 30 so that light is refracted or reflected. It is suppressed. Therefore, the transparent substrate 300 with a display device can display an image clearly using the display device 30.

[Fourth Embodiment]
Next, a fourth embodiment will be described based on the drawings. In addition, about the same component as embodiment already demonstrated, the same code | symbol may be attached | subjected and description may be abbreviate | omitted.

<Table>
FIG. 5 is a perspective view illustrating a table 400 according to the fourth embodiment. The table 400 includes the transparent substrate 100 with a display device according to the first embodiment as a top plate.

  In the transparent substrate 100 with a display device, the second transparent substrate 12 is supported by a plurality of legs 50 so that the display device 30 is disposed on the lower side.

  Note that the shape, number, position, and the like of the legs 50 are not limited to the configuration illustrated in FIG. The table 400 may be provided with a support member that supports the display device 30 in order to prevent the display device 30 from falling.

  The table 400 may include the transparent substrate 200 with a display device according to the second embodiment and the transparent substrate 300 with a display device according to the third embodiment as a top plate. Further, the transparent substrates 100, 200, 300 with a display device provided as a top plate on the table 400 may be provided with a plurality of at least one of the touch panel 20 and the display device 30, respectively.

  As described above, according to the table 400 according to the fourth embodiment, the display device 30 is held without the transparent substrate with the display device being bent, and the touch panel function of the display device 30 is used from the top surface of the top plate. be able to. In the table 400, the display device 30 is joined to the transparent substrate by the transparent resin 40, light refraction and reflected light are suppressed, and the user can clearly see the image displayed on the display device 30 from above. Is possible.

  Although the transparent substrate with a display device and the table according to the embodiments have been described above, the present invention is not limited to the above embodiments, and various modifications and improvements can be made within the scope of the present invention.

DESCRIPTION OF SYMBOLS 10 Transparent substrate 11 1st transparent substrate 12 2nd transparent substrate 20 Touch panel 30 Display apparatus 30a Display part 40,41,42 Transparent resin 100,200,300 Transparent substrate 400 with a display apparatus Table

Claims (9)

A first transparent substrate;
A touch panel bonded to the first transparent substrate via a layer made of a transparent resin;
A second transparent substrate bonded to a surface of the touch panel opposite to the first transparent substrate via a layer made of a transparent resin;
A display device,
A transparent substrate with a display device, wherein a surface of the second transparent substrate opposite to the touch panel faces a display unit of the display device. The transparent substrate with a display device according to claim 1, wherein a thickness of the first transparent substrate is thinner than a thickness of the second transparent substrate. 3. The transparent substrate with a display device according to claim 1, wherein an area of each of the first transparent substrate and the second transparent substrate is 1.2 times or more of an area of the display unit. A transparent substrate having a thickness of 2 mm to 10 mm;
A touch panel bonded to the transparent substrate;
A display device having a display unit bonded to the opposite side of the transparent substrate of the touch panel,
The said touch panel and the said display part are joined through the layer which consists of transparent resin whose dielectric constant is 4-6, The transparent substrate with a display apparatus characterized by the above-mentioned. A transparent substrate having a thickness of 2 mm to 10 mm;
A display unit having a touch panel function bonded to the transparent substrate,
The transparent substrate with a display device, wherein the transparent substrate and the display section are bonded via a layer made of a transparent resin having a relative dielectric constant of 4 or more and 6 or less. 6. The transparent substrate with a display device according to claim 4, wherein an area of the transparent substrate is 1.2 times or more of an area of the display unit. The display device according to claim 1, wherein the transparent resin has an elastic modulus at 25 ° C. of 1.0 × 10 ³ Pa or more and 1.0 × 10 ⁵ Pa or less. Transparent substrate. The transparent substrate with a display device according to any one of claims 1 to 7, wherein the transparent resin has a thickness of 0.03 mm to 5 mm. A table comprising the transparent substrate with a display device according to claim 1.

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