Glass laminate and image display device

Abstract

To provide a glass laminate capable of improving designability when applied to an image display device and improving the detection accuracy of an infrared sensor.SOLUTION: A glass laminate 1 includes a glass base material 11, a scattering prevention film 12 and an infrared transmission layer 13. The scattering prevention film 12 is stuck on the glass base material 11; the infrared transmission layer 13 is arranged on the opposite side of the scattering prevention film 12 to the glass base material 11; the infrared transmission layer 13 has a light transmittance of less than 0.1% in a wavelength of 380-780 nm and a light transmittance of 80% or more in a wavelength of 820-1500 nm; and the scattering prevention film 12 has a haze value of 0% or more and 6% or less in a wavelength of 380-780 nm and a haze value of 0% or more and 4.5% or less in a wavelength of 820-1500 nm.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a glass laminate and an image display device. [Background technology]

[0002] Known image display devices include in-vehicle information devices (e.g., car navigation systems, audio devices), mobile communication devices, digital signage, etc. Such image display devices typically include a cover glass for protecting the image display panel from external impact. In recent years, the incorporation of an infrared sensor into an image display device has been considered. This enables communication and object detection using infrared rays. In this case, the infrared sensor is disposed inside the image display device so as to face the cover glass. In such a configuration, the infrared sensor is visible through the cover glass from the outside of the image display device, so there is room for improvement in terms of design. In view of this, it has been proposed to provide an infrared-transmitting layer that blocks visible light on the cover glass to hide the infrared sensor (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-49469 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, the infrared transmission layer described in Patent Document 1 does not have sufficient visible light blocking properties, and there is a risk that the infrared sensor may be visible when external light is incident on the infrared transmission layer. In addition, it is desirable to attach a shatterproof film to the cover glass to prevent glass fragments from scattering when the glass breaks. However, if a shatterproof film and an infrared-transmitting layer are provided on the cover glass, the detection accuracy of the infrared sensor may decrease, which may cause malfunction and / or errors of the infrared sensor. The present invention has been made to solve the above-mentioned problems in the conventional art, and a main object of the present invention is to provide a glass laminate which, when applied to an image display device, can improve the design and can also improve the detection accuracy of an infrared sensor. [Means for solving the problem]

[0005] [1] A glass laminate according to an embodiment of the present invention includes a glass substrate, a shatterproof film, and an infrared-transmitting layer. The shatterproof film is attached to the glass substrate. The infrared-transmitting layer is disposed on the opposite side of the glass substrate from the shatterproof film. The infrared-transmitting layer has a transmittance of less than 0.1% for light having a wavelength of 380 nm to 780 nm, and a transmittance of 80% or more for light having a wavelength of 820 nm to 1500 nm. The shatterproof film has a haze value of 0% or more and 6% or less for light having a wavelength of 380 nm to 780 nm, and a haze value of 0% or more and 4.5% or less for light having a wavelength of 820 nm to 1500 nm. [2] In the glass laminate described in the above [1], the infrared transmitting layer may have a thickness of 8 μm or more and 20 μm or less. [3] The glass laminate according to [1] or [2] above may further include a light-shielding layer. The light-shielding layer is disposed on the opposite side of the glass substrate from the shatterproof film. The light-shielding layer has a transmittance of less than 0.1% for light having a wavelength of 380 nm to 780 nm. The light-shielding layer may have a first opening in which the infrared-transmitting layer is disposed. [4] The glass laminate described in [3] above may include a first area and a second area. In the first area, the shatterproof film, the glass substrate, and the infrared-transmitting layer are arranged in this order in the thickness direction of the glass substrate. In the second area, the shatterproof film, the glass substrate, and the light-shielding layer are arranged in this order in the thickness direction of the glass substrate. The L of reflected light of light incident from the shatterproof film side * a * b * In color space, the absolute value of the color difference ΔE(SCE) between the first area and the second area may be 2.0 or less. [5] In the glass laminate according to any one of the above [1] to [4], the infrared-transmitting layer may contain Pigment Blue. [6] An image display device according to another aspect of the present invention includes the glass laminate according to any one of [1] to [5] above, and an infrared sensor. The infrared sensor is located on the opposite side of the infrared transmission layer from the glass substrate. The infrared sensor is capable of receiving infrared light transmitted through the infrared transmission layer. [7] The image display device according to [6] above may further include an infrared emitting section capable of emitting infrared rays. The infrared emitting section may be located on the opposite side of the infrared transmitting layer to the glass substrate and may face the infrared transmitting layer. Effect of the Invention

[0006] Advantageous Effects of Invention When the glass laminate according to the embodiment of the present invention is applied to an image display device equipped with an infrared sensor, the design of the image display device can be improved and the detection accuracy of the infrared sensor can be improved. [Brief description of the drawings]

[0007] [Figure 1] FIG. 1 is a front view of an image display device including a glass laminate according to one embodiment of the present invention. [Diagram 2] FIG. 2 is a cross-sectional view taken along line II-II' of the image display device of FIG. [Diagram 3] FIG. 3 is a front view of an image display device according to another embodiment of the present invention. [Figure 4] FIG. 4 is a schematic diagram of a shatterproof film provided in the glass laminate of FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] Representative embodiments of the present invention will be described below, but the present invention is not limited to these embodiments. In addition, in order to clarify the description, the width, thickness, shape, etc. of each part may be shown in a schematic manner compared to the embodiment, but these are merely examples and do not limit the interpretation of the present invention.

[0009] A. Overall configuration of glass laminate FIG. 1 is a front view of an image display device including a glass laminate according to one embodiment of the present invention; FIG. 2 is a cross-sectional view taken along line II-II' of the image display device of FIG. The glass laminate 1 of the illustrated example is typically applied to an image display device 100 including an infrared sensor 2 as a cover glass. Representative examples of the image display device 100 include a liquid crystal display device and an organic EL display device. Applications of such an image display device 100 include, for example, in-vehicle information devices, mobile communication devices, and digital signage, preferably in-vehicle information devices, and more preferably in car navigation systems.

[0010] In the illustrated example, the glass laminate 1 includes a glass substrate 11, a shatterproof film 12, and an infrared-transmitting layer 13. The shatterproof film 12 is typically attached to the glass substrate 11 via a first adhesive layer 16. The infrared-transmitting layer 13 is disposed on the opposite side of the glass substrate 11 from the shatterproof film 12. The infrared-transmitting layer 13 may be located at any appropriate location according to the design of the image display device. In the infrared-transmitting layer 13, the transmittance of light having a wavelength of 380 nm to 780 nm (hereinafter, referred to as visible light) is less than 0.1%, and the transmittance of light having a wavelength of 820 nm to 1500 nm (hereinafter, referred to as infrared light) is 80% or more. In the shatterproof film 12, the haze value for visible light is 0% or more and 6% or less, and the haze value for infrared light is 0% or more and 4.5% or less. According to this configuration, the visible light transmittance of the infrared transmission layer is less than 0.1%, so that the visible light (external light) incident on the glass substrate from the shatterproof film side can be sufficiently suppressed from passing through the infrared transmission layer. Therefore, when the glass laminate is applied to an image display device equipped with an infrared sensor, the infrared sensor can be sufficiently suppressed from being visible from outside the image display device. In particular, when the glass laminate is applied to an in-vehicle information device, even if strong external light such as the setting sun is incident on the in-vehicle information device, the infrared sensor can be sufficiently suppressed from being visible. In addition, since the infrared transmittance of the infrared-transmitting layer is 80% or more and the haze value for infrared in the shatterproof film is 4.5% or less, in an image display device equipped with a glass laminate, the infrared sensor can clearly detect the detection target, thereby improving the detection accuracy of the infrared sensor. Therefore, when such a glass laminate is applied to an image display device, the design can be improved and the detection accuracy of the infrared sensor can be improved. In addition, since the haze value of the shatterproof film for visible light is within the above range, the image display device can be provided with excellent display performance.

[0011] The visible light transmittance (total light transmittance) of the infrared transmitting layer 13 is preferably 1% or less, and more preferably 0.1% or less. On the other hand, the lower limit of the visible light transmittance (total light transmittance) of the infrared transmitting layer 13 is typically 0%. The light transmittance is measured, for example, in accordance with JIS K 7375:2008. If the visible light transmittance of the infrared transmitting layer is within this range, when the glass laminate is applied to an image display device, the infrared sensor can be stably prevented from being visible from outside the image display device.

[0012] The infrared transmittance (wavelength 940 nm) of the infrared transmitting layer 13 is preferably 80% or more, and more preferably 90% or more. On the other hand, the upper limit of the infrared transmittance (wavelength 940 nm) of the infrared transmitting layer 13 is typically 100%. If the infrared transmittance of the infrared transmitting layer falls within this range, then when the glass laminate is applied to an image display device, the detection accuracy of the infrared sensor can be stably improved.

[0013] The thickness of the infrared transmission layer 13 is, for example, 5 μm or more, preferably 8 μm or more, and more preferably 10 μm or more. When the infrared transmission layer has such a thickness, the visible light transmittance of the infrared transmission layer can be stably adjusted to be within the above range. On the other hand, the thickness of the infrared transmitting layer 13 is, for example, 20 μm or less, and preferably 15 μm or less. If the infrared transmitting layer has such a thickness, the infrared transmittance of the infrared transmitting layer can be stably adjusted to be within the above range.

[0014] The haze value of the shatterproof film 12 for visible light is preferably 4.5% or less, and more preferably 0.5% or less. On the other hand, the lower limit of the haze value for visible light in the shatterproof film 12 is typically 0%. The haze value is calculated, for example, by the following formula (1). Haze = Diffuse transmittance / Total light transmittance × 100 (1) If the haze value of the shatterproof film for visible light falls within this range, the transparency of the glass laminate can be sufficiently ensured, and excellent display performance can be stably imparted to the image display device. The total light transmittance of the shatterproof film 12 for visible light is, for example, 80% to 100%, and preferably 90% to 100%. The diffuse transmittance of the shatterproof film 12 for visible light is, for example, 0.5% to 12%.

[0015] The haze value of the shatterproof film 12 against infrared rays (wavelength 940 nm) is preferably 3% or less, and more preferably 2% or less. On the other hand, the lower limit of the haze value of the shatterproof film 12 against infrared rays is typically 1%. If the haze value of the shatterproof film with respect to infrared rays (wavelength 940 nm) is within this range, the detection accuracy of the infrared sensor can be improved more stably when the glass laminate is applied to an image display device. The shatterproof film 12 has an infrared transmittance (wavelength 940 nm) of, for example, 80% to 100%, and preferably 90% to 100%. The shatterproof film 12 has an infrared diffuse transmittance of, for example, 0.5% to 4.5%.

[0016] The shatterproof film 12 has a thickness of, for example, 60 μm or more, and preferably 80 μm or more. A shatterproof film having such a thickness can sufficiently prevent glass fragments from shattering. The haze value of the shatterproof film 12 can be appropriately adjusted by, for example, changing the surface roughness of the shatterproof film 12, the particle size and / or content of the particles contained in the shatterproof film 12, or the like.

[0017] In one embodiment, the glass laminate 1 further includes a light-shielding layer 14. The light-shielding layer 14 is disposed on the opposite side of the shatterproof film 12 with respect to the glass substrate 11. The light-shielding layer 14 is disposed so as not to overlap the infrared transmission layer 13 in the thickness direction of the glass substrate 11. The light-shielding layer 14 is formed in any appropriate pattern according to the purpose, and is formed in a frame shape at least along the peripheral portion of the glass substrate 11. In the light-shielding layer 14, the visible light transmittance (total light transmittance) is, for example, less than 0.1%. When the glass laminate includes such a light-shielding layer, wiring (not shown) and the like included in the image display device can be hidden, and the design of the image display device can be further improved. In addition, when the image display device is a liquid crystal display device, the light-shielding layer can block illumination light from a backlight, thereby suppressing leakage of illumination light from the periphery of the image display device.

[0018] In one embodiment, the light-shielding layer 14 has a first opening 14a and a second opening 14b. In the illustrated example, the light-shielding layer 14 is provided directly on the entire surface of the glass substrate 11 opposite the shatterproof film 12, except for the first opening 14a and the second opening 14b. Each of the first opening 14a and the second opening 14b exposes a part of the surface of the glass substrate 11 from the light-shielding layer 14.

[0019] The first opening 14a corresponds to the infrared transmission layer 13. In the illustrated example, the infrared transmission layer 13 is disposed in the first opening 14a and is provided directly on the surface of the glass substrate 11. The shape of the first opening 14a as viewed from the thickness direction of the glass substrate 11 is not particularly limited. Examples of the shape of the first opening 14a as viewed from the thickness direction of the glass substrate 11 include a polygonal shape, a circular shape, an elliptical shape, and other irregular shapes. In the illustrated example, the first opening 14a has a rectangular shape.

[0020] The second opening 14b corresponds to the display region of the image display device 100. The second opening 14b is located away from the first opening 14a. The shape of the second opening 14b as viewed from the thickness direction of the glass substrate 11 is not particularly limited. The opening area of ​​the second opening 14b is, for example, 10 to 50 times the opening area of ​​the first opening 14a.

[0021] In one embodiment, the glass laminate 1 includes a first area E1 and a second area E2. In the first area E1, the shatterproof film 12, the glass substrate 11, and the infrared transparent layer 13 are arranged in this order in the thickness direction of the glass substrate 11. In the second area E2, the shatterproof film 12, the glass substrate 11, and the light-shielding layer 14 are arranged in this order in the thickness direction of the glass substrate 11. The L of the reflected light of the light incident from the shatterproof film 12 side * a * b * In the color space, the absolute value of the color difference ΔE (SCE) between the first area E1 and the second area E2 is, for example, 2 or less, preferably 1 or less, and more preferably 0.5 or less. When the color difference ΔE between the first area and the second area is reduced in this manner, the glass laminate can achieve a seamless state between the first area and the second area, that is, a state in which the boundary between the areas cannot be visually recognized. The color difference ΔE is measured, for example, by a CM-2600d manufactured by Konica Minolta. In the illustrated example, the glass laminate 1 includes a third area E3 in addition to the first area E1 and the second area E2. The third area E3 corresponds to a display area of ​​the image display device and is an area overlapping with the second opening 14b in the thickness direction of the glass base material 11.

[0022] B. Overall configuration of image display device Next, an image display device 100 according to another aspect of the present invention will be described. The above-described glass laminate 1 is typically applied to an image display device 100 including an infrared sensor 2. As shown in FIG. 2, the image display device 100 includes a glass laminate 1 and an infrared sensor 2. The infrared sensor 2 is located on the opposite side of the infrared transmission layer 13 from the glass substrate 11. In the illustrated example, the infrared sensor 2 faces the infrared transmission layer 13 with a gap therebetween. The infrared sensor 2 can receive infrared light that has passed through the infrared transmission layer 13. The infrared sensor 2 can have any appropriate configuration. As a result, the infrared sensor 2 can impart various functions to the image display device 100. Examples of functions that the infrared sensor 2 can impart to the image display device 100 include a driver monitoring function, a fingerprint detection function, a touch sensor function, and a gesture sensing function.

[0023] As shown in FIG. 1, in one embodiment, the image display device 100 further includes an infrared emitting unit 3. The infrared emitting unit 3 can emit infrared rays. More specifically, the infrared emitting unit 3 can emit infrared rays toward a detection target of the infrared sensor 2. The infrared emitting unit 3 is located on the opposite side of the infrared transmitting layer 13 to the glass substrate 11, and faces the infrared transmitting layer 13 with a gap therebetween. The infrared emitting unit 3 can have any appropriate configuration. The infrared rays emitted from the infrared emitting unit 3 are transmitted through the infrared transmitting layer 13, the glass substrate 11, and the shatterproof film 12 in this order, reach the detection target, and are reflected. Thereafter, the infrared rays reflected by the detection target are transmitted through the shatterproof film 12, the glass substrate 11, and the infrared transmitting layer 13 in this order, and are received by the infrared sensor 2. This allows the infrared sensor 2 to accurately detect the detection target.

[0024] In the illustrated example, the infrared sensor 2 and the infrared emitter 3 are disposed in the same first area E1 and face the same infrared transmissive layer 13. The arrangement of the infrared sensor 2 and the infrared emitter 3 is not limited to this. 3, the glass laminate 1 may include a plurality of first areas E1. That is, the glass laminate 1 may have a plurality of infrared transmitting layers 13. In this case, among the plurality of first areas E1, the infrared sensor 2 may be arranged in one first area E1, and the infrared emission unit 3 may be arranged in another first area E1.

[0025] 2, in one embodiment, the image display device 100 further includes an image display panel 5. The image display panel 5 is located on the opposite side of the glass substrate 11 from the shatterproof film 12. In the illustrated example, the image display panel 5 is attached via a second adhesive layer 17 to the surface of the glass substrate 11 exposed from the second opening 14b. Examples of the image display panel 5 include a liquid crystal display panel and an organic EL display panel. In the illustrated example, the image display panel 5 is a liquid crystal display panel. The liquid crystal display panel 5 includes a liquid crystal layer 5a and polarizing plates 5b provided on both sides of the liquid crystal layer 5a. Each of the liquid crystal layer 5a and the polarizing plates 5b may have any appropriate configuration. When the image display panel is a liquid crystal display panel, the image display device 100 may further include a backlight 4. The backlight 4 is typically disposed on the opposite side of the liquid crystal display panel 5 from the glass substrate 11.

[0026] C. Glass Laminate Details Hereinafter, each member constituting the glass laminate will be described.

[0027] C-1. Glass substrate The glass substrate 11 has a rigidity sufficient to protect the image display panel 5. The glass substrate 11 typically does not have an opening. Examples of materials for the glass substrate 11 include soda glass, alkali glass, and non-alkali glass. The surface of the glass substrate 11 may be provided with a compressive stress layer.

[0028] The outer shape of the glass substrate 11 is not particularly limited. Examples of the outer shape of the glass substrate 11 as viewed in the thickness direction include a polygonal shape, a circular shape, an elliptical shape, and other irregular shapes. In the illustrated example, the glass substrate 11 has a rectangular outer shape.

[0029] The visible light transmittance (total light transmittance) of the glass substrate 11 is, for example, 80% to 100%, and preferably 90% to 100%. The infrared ray transmittance (wavelength 940 nm) of the glass substrate 11 is, for example, 80% to 100%, and preferably 90% to 100%. The glass substrate 11 may have any appropriate thickness. The thickness of the glass substrate 11 is, for example, 0.7 mm to 2 mm, or, for example, 1.1 mm to 1.3 mm.

[0030] C-2. Shatterproof film As described above, the shatterproof film 12 is attached to the surface of the glass substrate 11 via the first adhesive layer 16, and has the property of preventing glass fragments from shattering. The shatterproof film 12 preferably has optical properties in addition to the shatterproof property. Examples of the optical properties of the shatterproof film include anti-reflection properties and anti-glare properties. In one embodiment, the shatterproof film 12 is an anti-reflection film having anti-reflection properties.

[0031] There is no particular limitation on the outer shape of the shatterproof film 12. Examples of the outer shape of the shatterproof film 12 as viewed in the thickness direction include the same outer shape as that of the glass substrate 11 described above. In one embodiment, the shatterproof film 12 has a similar shape to but smaller than the glass substrate 11. In the illustrated example, the shatterproof film 12 is attached so that the center of the shatterproof film 12 approximately coincides with the center of the glass substrate 11. The distance L between the edge of the shatterproof film 12 and the edge of the glass substrate 11 (hereinafter referred to as the edge-to-edge distance L) is, for example, 0.8 mm or less, preferably 0.4 mm or less, more preferably 0.10 mm or less, and further preferably 0.08 mm or less. When the edge-to-edge distance L between the shatterproof film and the glass substrate is adjusted in this manner, the sense of unity between the shatterproof film and the glass substrate can be improved, and the design of the glass laminate can be improved. On the other hand, the edge-to-edge distance L between the shatterproof film 12 and the glass substrate 11 is, for example, 0 mm or more, or, for example, 0.04 mm or more.

[0032] The shatterproof film 12 may have a single-layer structure or a laminated structure. As shown in Fig. 4, in one embodiment, the shatterproof film 12 has a laminated structure. In the illustrated example, the shatterproof film 12 includes a substrate 121 and a functional layer 122.

[0033] The substrate 121 is typically a resin film that supports the functional layer 122. The substrate 121 may be made of any appropriate transparent resin. Examples of the transparent resin include cycloolefin (COP) resins such as polynorbornene resins; polyester resins such as polyethylene terephthalate (PET) resins; cellulose resins such as triacetyl cellulose (TAC); polycarbonate (PC) resins; (meth)acrylic resins; polyvinyl alcohol resins; polyamide resins; polyimide resins; polyethersulfone resins; polysulfone resins; polystyrene resins; polyolefin resins; and acetate resins. Among the transparent resins, cellulose resins are preferable. The thickness of the substrate 121 is, for example, 20 μm to 140 μm.

[0034] The functional layer 122 is typically provided on the surface of the substrate 121 opposite to the glass substrate 11. Examples of the functional layer 122 include a hard coat layer, an anti-reflection layer, an anti-sticking layer, an anti-glare layer, and an anti-fingerprint layer. The functional layer 122 may be a single layer or may have a laminated structure of two or more layers. In the illustrated example, the functional layer 122 includes a hard coat layer 122a, an anti-reflection layer 122b, and an anti-fingerprint layer 122c laminated in this order from the substrate 121 side. Each of the hard coat layer 122a, the anti-reflection layer 122b, and the anti-fingerprint layer 122c may have any appropriate configuration.

[0035] C-3. Light shielding layer 2, the light-shielding layer 14 has a light-shielding property as described above. The light-shielding layer 14 is typically colored with a coloring material. Note that the light-shielding layer 14 may have a predetermined design. Light-shielding layer 14 L * a * b * In color space, L * is, for example, 50 or less, preferably 20 or less. * a * b * In color space, a * The value is, for example, +10 to -10, preferably +5 to -5. * a * b * In color space, b * The value is, for example, +10 to -10, preferably +5 to -5. Representative examples of the color of the light-shielding layer 14 include deep dark colors, preferably black, blue, navy blue, purple, and brown, and more preferably black. When the light-shielding layer is black, it can stably hide components (e.g., wiring, terminals, and backlight) arranged inside the image display device.

[0036] Any suitable pigment may be used as the coloring material. Examples of the coloring material include black pigments, blue pigments, dark blue pigments, purple pigments, and brown pigments. The coloring materials may be used alone or in combination. Among the coloring materials, black pigments are preferred. A representative example of the black pigment is carbon black.

[0037] The light-shielding layer 14 may contain a resin material in addition to the coloring material. Examples of the resin material include (meth)acrylic resins. In this specification, "(meth)acrylic" includes acrylic and methacrylic. The resin materials may be used alone or in combination. Among the resin materials, (meth)acrylic resins are preferable.

[0038] The thickness of the light-shielding layer 14 is, for example, 5 μm to 20 μm, or, for example, 10 μm to 15 μm.

[0039] To form such a light-shielding layer 14, typically, a composition for forming a light-shielding layer is printed on a predetermined portion of the glass substrate 11 by any appropriate printing method. Thereafter, the coating of the composition for forming a light-shielding layer is heat-treated (for example, at 120°C for 30 minutes) as necessary. The light-shielding layer 14 may be formed by repeating the printing and heat treatment. The composition for forming the light-shielding layer contains, for example, the above-mentioned colorant, a monomer component that is the raw material for the above-mentioned resin material, a curing agent, and an organic solvent (e.g., isophorone, ethyl acetate) in any appropriate content ratio. Examples of printing methods include gravure printing, offset printing, screen printing, and transfer printing from a transfer sheet.

[0040] C-4.Infrared transmission layer The infrared-transmitting layer 13 overlaps with the shatterproof film 12 when viewed from the thickness direction of the glass substrate 11. The infrared-transmitting layer 13 typically contains a blue pigment. Examples of blue pigments include copper phthalocyanines, and preferably pigment blue. When the infrared-transmitting layer contains such a blue pigment, the above-mentioned light transmittance can be stably achieved.

[0041] The infrared transmission layer 13 may contain a resin material in addition to the blue pigment. Examples of the resin material include the same resin materials that may be contained in the light-shielding layer 14, and preferably, (meth)acrylic resins.

[0042] To form such an infrared-transmitting layer 13, typically, a composition for forming an infrared-transmitting layer is printed on a predetermined portion of the glass substrate 11 by any appropriate printing method. Thereafter, the coating of the composition for forming an infrared-transmitting layer is heat-treated (for example, at 150° C. for 30 minutes) as necessary. The printing and heat treatment may be repeated to form the infrared-transmitting layer 13. The composition for forming an infrared-transmitting layer contains, for example, the above-mentioned blue pigment, a monomer component that is a raw material for the above-mentioned resin material, a curing agent, and an organic solvent (e.g., isophorone, ethyl acetate) in any appropriate content ratio. Examples of printing methods include gravure printing, offset printing, screen printing, and transfer printing from a transfer sheet.

[0043] C-5. Adhesive layer The first adhesive layer 16 attaches the shatterproof film 12 to the glass substrate 11. The second adhesive layer 17 attaches the image display panel 5 to the glass substrate 11. The first adhesive layer 16 and the second adhesive layer 17 may be made of any suitable transparent adhesive. Examples of transparent adhesives include (meth)acrylic adhesives, rubber adhesives, silicone adhesives, polyester adhesives, urethane adhesives, epoxy adhesives, and polyether adhesives. By adjusting the type, number, combination, and compounding ratio of monomers forming the base resin of the adhesive, as well as the compounding amount of the crosslinking agent, reaction temperature, reaction time, etc., an adhesive having desired properties according to the purpose can be prepared. The base resin of the adhesive may be used alone or in combination.

[0044] The first pressure-sensitive adhesive layer 16 and the second pressure-sensitive adhesive layer 17 each have a visible light transmittance (total light transmittance) of, for example, 80% to 100%, and preferably 90% to 100%. The first pressure-sensitive adhesive layer 16 and the second pressure-sensitive adhesive layer 17 each have an infrared transmittance (wavelength 940 nm) of, for example, 80% to 100%, and preferably 90% to 100%. The thickness of each of the first pressure-sensitive adhesive layer 16 and the second pressure-sensitive adhesive layer 17 is, for example, 5 μm to 40 μm, and for example, 10 μm to 30 μm. [Industrial Applicability]

[0045] The glass laminate according to the embodiment of the present invention can be suitably applied to image display devices (typically, liquid crystal display devices and organic EL display devices). [Explanation of symbols]

[0046] 1 Glass laminate 11 Glass substrate 12 Shatterproof film 13 Infrared-transmitting layer 14 Light blocking layer 2. Infrared Sensor 3 Infrared emitter 100 Image display device

Claims

1. A glass substrate; A shatterproof film attached to the glass substrate; an infrared transmitting layer disposed on the opposite side of the glass substrate from the shatterproof film; the infrared transmitting layer has a transmittance of less than 0.1% for light having a wavelength of 380 nm to 780 nm and a transmittance of 80% or more for light having a wavelength of 820 nm to 1500 nm; The glass laminate of the above shatterproof film, wherein the haze value for light with a wavelength of 380 to 780 nm is 0% or more and 6% or less, and the haze value for light with a wavelength of 820 nm to 1500 nm is 0% or more and 4.5% or less.

2. The glass laminate according to claim 1 , wherein the infrared transmitting layer has a thickness of 8 μm or more and 20 μm or less.

3. Further, the glass substrate further includes a light-shielding layer disposed on the opposite side of the shatterproof film with respect to the glass substrate, the light-shielding layer having a transmittance of light having a wavelength of 380 nm to 780 nm of less than 0.1%, The glass laminate according to claim 1 , wherein the light-shielding layer has a first opening in which the infrared-transmitting layer is disposed.

4. The glass laminate comprises: a first area in which the shatterproof film, the glass substrate, and the infrared transmissive layer are arranged in this order in a thickness direction of the glass substrate; a second area in which the shatterproof film, the glass substrate, and the light-shielding layer are arranged in this order in a thickness direction of the glass substrate; The L of reflected light of light incident from the shatterproof film side ＊ a ＊ b ＊ 4. The glass laminate according to claim 3, wherein an absolute value of a color difference ΔE (SCE) between the first area and the second area in a color space is 2.0 or less.

5. 10. The glass laminate of claim 1, wherein the infrared transmissive layer comprises Pigment Blue.

6. The glass laminate according to any one of claims 1 to 5, an infrared sensor located on an opposite side of the infrared transmission layer from the glass substrate, the infrared sensor being capable of receiving infrared light that has passed through the infrared transmission layer.

7. Further comprising an infrared emitting unit capable of emitting infrared rays, The image display device according to claim 6 , wherein the infrared radiating section is located on an opposite side of the infrared transmitting layer from the glass substrate and faces the infrared transmitting layer.

Images