# US 2025/0093552 A1 · Antiglare layer-equipped transparent substrate, production method for antiglare layer-equipped transparent substrate, and image display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0093552 A1 - Document ID: US20250093552A1 - Status: Published application - Kind: A1 - Application number: 18/962,964 - Filed: 2024-11-27 - Published: 2025-03-20 - Earliest claimed: 2022-05-31 - Assignees: AGC Inc. - Applicants: AGC Inc. - Inventors: Yasuhisa NISHIKAWA; Kazuya Takemoto; Hideaki Takahoshi; Tamotsu Morimoto - Web page: https://patentgrep.com/patent/US20250093552A1 ## CPC - G02B 1/118: having sub-optical wavelength surface structures designed to provide an enhanced transmittance, e.g. moth-eye structures - B32B 9/00: Layered products comprising a {layer of a} particular substance not covered by groups B32B11/00 - B32B29/00 - B32B 33/00: Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class - C03C 17/42: at least one coating of an organic material and at least one non-metal coating - G02B 1/115: Multilayers - G02B 1/18: Coatings for keeping optical surfaces clean, e.g. hydrophobic or photo-catalytic films (G02B1/16 takes precedence) - G02B 5/02: Diffusing elements; Afocal elements - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - C03C: CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS ## Abstract An antiglare layer-attached transparent substrate includes: a transparent substrate comprising two main surfaces; and an antiglare layer and an anti-reflective layer in this order on at least one main surface of the transparent substrate. The antiglare layer-attached transparent substrate has a haze value of 30% or more, and a skewness Ssk of 0.4 or less on a surface having the antiglare layer, and the antiglare layer contains fine particles, and a difference between a thickness of the antiglare layer and an average particle diameter of the fine particles is 4 μm or less. ## Claims ### Claim 1 An antiglare layer-attached transparent substrate comprising: a transparent substrate comprising two main surfaces; and an antiglare layer and an anti-reflective layer in this order on at least one main surface of the transparent substrate, wherein the antiglare layer-attached transparent substrate has a haze value of 30% or more, and a skewness Ssk of 0.4 or less on a surface having the antiglare layer, and the antiglare layer comprises fine particles, and a difference between a thickness of the antiglare layer and an average particle diameter of the fine particles is 4 μm or less. ### Claim 2 (depends on 1) The antiglare layer-attached transparent substrate according to claim 1, wherein a dynamic friction coefficient on the surface having the antiglare layer is 0.3 or less. ### Claim 3 (depends on 1) The antiglare layer-attached transparent substrate according to claim 1, wherein the fine particles are spherical. ### Claim 4 (depends on 1) The antiglare layer-attached transparent substrate according to claim 1, wherein the fine particles comprise resin particles. ### Claim 5 (depends on 1) The antiglare layer-attached transparent substrate according to claim 1, wherein the fine particles comprise silica particles. ### Claim 6 (depends on 1) The antiglare layer-attached transparent substrate according to claim 1, wherein the anti-reflective layer has a laminated structure in which at least two dielectric layers having different refractive indices are laminated. ### Claim 7 (depends on 6) The antiglare layer-attached transparent substrate according to claim 6, wherein at least one layer of the dielectric layers is mainly formed of an oxide containing at least one element selected from the group consisting of Si, Nb, Ti, Zr, Ta, Al, Sn, and In, or a nitride containing at least one element selected from the group consisting of Si and Al. ### Claim 8 (depends on 6) The antiglare layer-attached transparent substrate according to claim 6, wherein at least one layer of the dielectric layers is mainly formed of a Si oxide, at least another layer among the layers in the laminated structure is mainly formed of a mixed oxide of an oxide containing at least one element selected from the group A consisting of Mo and W and an oxide containing at least one element selected from the group B consisting of Si, Nb, Ti, Zr, Ta, Al, Sn, and In, and a content of elements of the group B contained in the mixed oxide is 65 mass % or less with respect to a total of elements of the group A contained in the mixed oxide and the elements of the group B contained in the mixed oxide. ### Claim 9 (depends on 1) The antiglare layer-attached transparent substrate according to claim 1, further comprising an antifouling film on the anti-reflective layer. ### Claim 10 (depends on 1) The antiglare layer-attached transparent substrate according to claim 1, wherein the transparent substrate comprises a glass. ### Claim 11 (depends on 1) The antiglare layer-attached transparent substrate according to claim 1, wherein the transparent substrate comprises a resin. ### Claim 12 (depends on 1) A method for producing the antiglare layer-attached transparent substrate according to claim 1, the method comprising: forming an antiglare layer on at least one surface of a transparent substrate; and forming an anti-reflective layer on a surface of the antiglare layer by using a dry method. ### Claim 13 (depends on 1) A method for producing the antiglare layer-attached transparent substrate according to claim 1, the method comprising: forming an antiglare layer on at least one surface of a transparent substrate; and forming an anti-reflective layer on a surface of the antiglare layer by using a wet method. ### Claim 14 (depends on 1) An image display device comprising the antiglare layer-attached transparent substrate according to claim 1.