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EP-4742220-A1 - GLASS LAMINATE, DISPLAY DEVICE, AND METHOD FOR PRODUCING GLASS LAMINATE

EP4742220A1EP 4742220 A1EP4742220 A1EP 4742220A1EP-4742220-A1

Abstract

A glass laminate 10 according to the present invention includes: a glass substrate 20 having a first main surface 20A and a second main surface 20B; a colored layer 40 provided on the second main surface 20B side of the glass substrate 20 and containing a pearl pigment; a transmittance adjustment layer 50 provided on the second main surface 20B side of the glass substrate 20; and an anti-reflection layer provided on the first main surface 20A side of the glass substrate 20. The average brightness L ave * , which is an average value of the brightness measured on the first main surface 20A, is 22 to 43.

Inventors

  • FUJIE, YOHEI

Assignees

  • AGC INC.

Dates

Publication Date
20260513
Application Date
20240701

Claims (17)

  1. A glass laminate comprising: a glass substrate comprising a first main surface and a second main surface; a colored layer comprising a pearl pigment and provided on a second main surface side of the glass substrate; a transmittance adjustment layer provided on the second main surface side of the glass substrate; and an antireflection layer provided on a first main surface side of the glass substrate, wherein the glass laminate has an average brightness L ave * , which is an average value of brightness L* in an L * a * b * color system measured on the first main surface, of 22 or more and 43 or less.
  2. A glass laminate comprising: a glass substrate comprising a first main surface and a second main surface; a colored layer comprising a pearl pigment and provided on a second main surface side of the glass substrate; and a transmittance adjustment layer provided on the second main surface side of the glass substrate, wherein the glass laminate does not comprise an antireflection layer, and the glass laminate has an average brightness L ave * , which is an average value of brightness L * in an L * a * b * color system measured on the first main surface, of 32 or more and 49 or less.
  3. The glass laminate according to claim 1 or 2, wherein in a case where a color difference ΔE measured on the first main surface is represented by the following equation (1), a color difference ΔE max , which is a maximum value of the color difference ΔE, is 2 or more and 15 or less, ΔE = Δa * 2 + Δb * 2 + ΔL * 2 0.5 where Δa * , Δb * , and ΔL * are differences in values of a * , b * , and L * between two points, respectively.
  4. The glass laminate according to claim 1 or 2, further comprising an antiglare layer provided on the first main surface side of the glass substrate, wherein a DOI on a main surface of the glass laminate on a side where the antiglare layer is provided is 95 or less.
  5. The glass laminate according to claim 1 or 2, wherein a display panel is provided on the second main surface side of the glass laminate, and a transmittance with respect to light having a wavelength of 550 nm in a region overlapping the display panel in the entire main surface of the glass laminate is lower than a transmittance with respect to light having a wavelength of 550 nm in a region not overlapping the display panel in the entire main surface of the glass laminate.
  6. The glass laminate according to claim 1 or 2, further comprising an adhesive layer provided between the second main surface of the glass substrate and the layer of the colored layer and the transmittance adjustment layer that is on a glass substrate side, wherein the adhesive layer comprises a cured resin, which is a cured product of a curable resin and a curing agent, and the adhesive layer further comprises at least one selected from the group consisting of methyl ethyl ketoxime, diethyl malonate, epsilon-caprolactam, 3,5-dimethylpyrazole, and acetoxime.
  7. The glass laminate according to claim 1 or 2, further comprising a pressure sensitive adhesive layer provided between the second main surface of the glass substrate and the layer of the colored layer and the transmittance adjustment layer that is on a glass substrate side, wherein the pressure sensitive adhesive layer comprises an acrylic resin or a silicone-based resin.
  8. The glass laminate according to claim 1 or 2, wherein the pearl pigment comprises a core member transparent to visible light, and a film member covering the core member and made of a metal oxide having a higher refractive index to visible light than the core member.
  9. The glass laminate according to claim 8, wherein the core member comprises at least one selected from the group consisting of natural mica, synthetic mica, silica, alumina, a glass, and a polysilicate, and the film member comprises at least one selected from the group consisting of titanium oxide, zirconium oxide, zinc oxide, iron oxide, and tin oxide.
  10. The glass laminate according to claim 1 or 2, wherein the transmittance adjustment layer does not comprise the pearl pigment.
  11. The glass laminate according to claim 1 or 2, wherein a transmittance with respect to light having a wavelength of 550 nm is 10% or more and 70% or less.
  12. The glass laminate according to claim 1 or 2, wherein the glass substrate is curved.
  13. The glass laminate according to claim 1 or 2, wherein the glass substrate is a chemically strengthened glass.
  14. A display device comprising: the glass laminate according to claim 1 or 2; and a display panel provided on the second main surface side of the glass laminate.
  15. The display device according to claim 14, wherein a transmittance with respect to light having a wavelength of 550 nm in a region overlapping the display panel in the entire main surface of the glass laminate is lower than a transmittance with respect to light having a wavelength of 550 nm in a region not overlapping the display panel in the entire main surface of the glass laminate.
  16. A method for producing the glass laminate according to claim 1 or 2, the method comprising: preparing a glass substrate having a first main surface and a second main surface; preparing a film provided with a colored layer comprising a pearl pigment and a transmittance adjustment layer; and placing the film on a second main surface side of the glass substrate.
  17. A method for producing the glass laminate according to claim 1 or 2, the method comprising: preparing a glass substrate having a first main surface and a second main surface; preparing a transfer sheet in which a colored layer comprising a pearl pigment and a transmittance adjustment layer are provided on a transfer substrate; and forming the colored layer comprising a pearl pigment and the transmittance adjustment layer on a second main surface side of the glass substrate by placing and transferring the transfer sheet on the second main surface of the glass substrate.

Description

TECHNICAL FIELD The present invention relates to a glass laminate, a display device, and a method for producing a glass laminate. BACKGROUND ART As a display device that displays an image, an icon, or the like, a display device that allows a pattern portion to be visually recognized in a state where no image is displayed is known. For example, Patent Literature 1 discloses that a decorative sheet including a pattern portion and a plurality of transmission portions is provided on a display surface of a display device. According to Patent Literature 1, an image is visually recognized through the transmission portions in a state where the image is displayed, and the pattern portion is visually recognized in a state where no image is displayed. CITATION LIST PATENT LITERATURE Patent Literature 1: WO 2020/040195 SUMMARY OF INVENTION TECHNICAL PROBLEM In such a display device, it is required to appropriately display an image while improving designability. An object of the present invention is to provide a glass laminate, a display device, and a method for producing a glass laminate capable of appropriately displaying an image while improving designability. SOLUTION TO PROBLEM A glass laminate according to the present disclosure includes: a glass substrate having a first main surface and a second main surface; a colored layer containing a pearl pigment and provided on a second main surface side of the glass substrate; a transmittance adjustment layer provided on the second main surface side of the glass substrate; and an antireflection layer provided on a first main surface side of the glass substrate, in which the glass laminate has an average brightness Lave*, which is an average value of brightness L* in an L*a*b* color system measured on the first main surface, of 22 or more and 43 or less. A glass laminate according to the present disclosure includes: a glass substrate having a first main surface and a second main surface; a colored layer containing a pearl pigment and provided on a second main surface side of the glass substrate; and a transmittance adjustment layer provided on the second main surface side of the glass substrate, in which the glass laminate does not include an antireflection layer, and has an average brightness Lave*, which is an average value of brightness L* in an L*a*b* color system measured on the first main surface, of 32 or more and 49 or less. A display device according to the present disclosure includes: the above glass laminate; and a display panel provided on the second main surface side of the glass laminate. A method for producing a glass laminate according to the present disclosure is a method for producing the above glass laminate, the method including: preparing a glass substrate having a first main surface and a second main surface; preparing a film provided with a colored layer containing a pearl pigment and a transmittance adjustment layer; and placing the film on a second main surface side of the glass substrate. A method for producing a glass laminate according to the present disclosure is a method for producing the above glass laminate, the method including: preparing a glass substrate having a first main surface and a second main surface; preparing a transfer sheet in which a colored layer containing a pearl pigment and a transmittance adjustment layer are provided on a transfer substrate; and forming the colored layer containing a pearl pigment and the transmittance adjustment layer on a second main surface side of the glass substrate by placing and transferring the transfer sheet on the second main surface of the glass substrate. ADVANTAGEOUS EFFECTS OF INVENTION According to the present invention, an image can be appropriately displayed while improving the designability. BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a schematic diagram showing a display device according to the present embodiment.FIG. 2 is a schematic cross-sectional view of the display device according to the present embodiment.FIG. 3A is a schematic diagram showing a state of the display device when no image is displayed on the display panel.FIG. 3B is a schematic diagram showing a state of the display device when an image is displayed on the display panel.FIG. 4 is a schematic diagram showing another example of a colored layer.FIG. 5 is a schematic cross-sectional view showing a procedure of forming the colored layer by transfer decoration.FIG. 6 is a schematic cross-sectional view showing the procedure of forming the colored layer by transfer decoration. DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention are described in detail with reference to the accompanying drawings. Note that, the present invention is not limited to the embodiment and, in the case where there are a plurality of embodiments, also includes a combination of the embodiments. In addition, numerical values include rounding ranges. <First Embodiment> <Display Device> FIG. 1 is a schematic diagram showi