# US 11,899,317 B2 · Laminated glass, and method for manufacturing laminated glass > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,899,317 B2 - Document ID: US11899317B2 - Status: Granted - Kind: B2 - Application number: 18/106,790 - Filed: 2023-02-07 - Published: 2023-06-08 - Granted: 2024-02-13 - Earliest claimed: 2020-08-21 - Assignees: AGC Inc. - Applicants: AGC Inc. - Inventors: Junichi Kakuta; Takashi Shibuya; Risa Kimura; Yuhei Gima - Web page: https://patentgrep.com/patent/US11899317B2 ## CPC - B32B 17/10: of synthetic resin - G02F 1/1339: Gaskets; Spacers; Sealing of cells - B32B 1/00: Layered products having a non-planar shape - B32B 7/12: using interposed adhesives or interposed materials with bonding properties - B32B 17/06: comprising glass as the main or only constituent of a layer, next to another layer of a specific {material} - B32B 17/10036: {comprising two outer glass sheets} - B32B 17/10293: {Edge features, e.g. inserts or holes} - B32B 17/10302: {Edge sealing} - B32B 17/10376: {Laminated safety glass or glazing containing metal wires} - B32B 17/10504: {Liquid crystal layer} - B32B 17/1055: {characterized by the resin layer, i.e. interlayer} - B32B 17/10678: {comprising UV absorbers or stabilizers, e.g. antioxidants} - B32B 17/10743: {containing acrylate (co)polymers or salts thereof} - B32B 17/10761: {containing vinyl acetal} - B32B 17/10798: {containing silicone} - B32B 17/10871: {in combination with particular heat treatment} - B32B 17/10899: {by introducing interlayers of synthetic resin} - B32B 17/10908: {in liquid form} - B32B 17/10935: {as a preformed layer, e.g. formed by extrusion} - B32B 27/08: of synthetic resin - B32B 27/30: comprising vinyl {(co)polymers; comprising acrylic (co)polymers} - B60J 3/04: adjustable in transparency - C03C 17/245: by deposition from the vapour phase - C03C 27/10: with the aid of adhesive specially adapted for that purpose - C09J 7/38: Pressure-sensitive adhesives [PSA] - E06B 3/66: Units comprising two or more parallel glass or like panes permanently secured together {(reforming and uniting glass sheets by fusing C03B23/00; joining glass to glass or to other materials C03C27/00; laminated glass B32B17/10)} - E06B 9/24: Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; {Slat blinds}(operating, guiding or securing devices or arrangements for roll-type closures E06B9/56; free-hanging flexible screens A47H23/00) - G02F 1/1334: based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals - B32B 17/10091: {thermally hardened} - B32B 17/10348: {comprising an obscuration band} - B32B 17/10357: {comprising a tinted intermediate film} - B32B 17/10816: {by pressing} - B32B 17/10862: {using pressing-rolls} - B32B 2250/02: 2 layers - B32B 2250/03: 3 layers - B32B 2307/402: Coloured - B32B 2307/412: Transparent - B32B 2307/542: Shear strength - B32B 2307/712: Weather resistant - B32B 2307/732: Dimensional properties - B32B 2307/7376: Thickness - B60J 1/001: {Double glazing for vehicles} - C03C 2217/231: In2O3/SnO2 - C03C 2217/24: Doped oxides - C09J 2301/124: the adhesive layer being present on both sides of the carrier, e.g. double-sided adhesive tape - C09J 2301/302: the adhesive being pressure-sensitive, i.e. tacky at temperatures inferior to 30°C - G02F 2202/28: Adhesive materials or arrangements - G02F 2203/48: Variable attenuator - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS - B60J: WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES (fastening, suspending, closing, or opening of such devices E05) - 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 - C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H) - E06B: FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES (shades or blinds for greenhouses A01G9/22; curtains A47H; lids for car boots or bonnets B62D25/10; skylights E04B7/18; sunshades, awnings E04F10/00) ## Abstract To provide a laminated glass in which color shading of an optical member is reduced, and a method for producing it. A laminated glass comprising a first glass plate, a second glass plate facing the first glass plate, and between the first glass plate and the second glass plate, a light control member to which a power feeder is connected, a bonding portion and a sealing member, wherein the sealing member overlaps with at least a part of the periphery of the first glass plate, in a plan view, the bonding portion is in contact with the first glass plate, the second glass plate, and a first principal surface, a second principal surface and side surfaces of the light control member, and the bonding portion contains a curable transparent resin. ## Claims ### Claim 1 A laminated glass comprising a first glass plate, a second glass plate facing the first glass plate, and between the first glass plate and the second glass plate, a light control member to which a power feeder is connected, a bonding portion and a sealing member, wherein the sealing member overlaps with at least a part of the periphery of the first glass plate, in a plan view, the bonding portion is in contact with the first glass plate, the second glass plate, and a first principal surface, a second principal surface and side surfaces of the light control member, and the bonding portion contains a curable transparent resin. ### Claim 2 (depends on 1) The laminated glass according to claim 1, wherein the sealing member is in contact with at least one of the first glass plate and the second glass plate. ### Claim 3 (depends on 1) The laminated glass according to claim 1, wherein the bonding portion has a first adhesive layer, the curable transparent resin in the bonding portion is contained in the first adhesive layer, and the first adhesive layer is in contact with the first glass plate, the sealing member, and a first principal surface and side surfaces of the light control member. ### Claim 4 (depends on 3) The laminated glass according to claim 3, wherein the first adhesive layer is in contact with the second glass plate. ### Claim 5 (depends on 3) The laminated glass according to claim 3, wherein the first adhesive layer has a thickness of 1 μm or more and 1000 μm or less. ### Claim 6 (depends on 3) The laminated glass according to claim 3, wherein the first adhesive layer has a shear modulus at 25° C. of 1.0×103 Pa or more and 2.0×105 Pa or less. ### Claim 7 (depends on 3) The laminated glass according to claim 3, wherein the bonding portion has a second adhesive layer, the second adhesive layer has a transparent pressure-sensitive adhesive sheet, and the second adhesive layer is in contact with the first adhesive layer, a second principal surface of the light control member and the second glass plate. ### Claim 8 (depends on 3) The laminated glass according to claim 3, wherein the bonding portion has a second adhesive layer and a third adhesive layer, the second adhesive layer has a transparent pressure-sensitive adhesive sheet, and between the second adhesive layer and the third adhesive layer, there is a resin film, the second adhesive layer is in contact with the resin film and the second glass plate, and the third adhesive layer is in contact with the resin film and a second principal surface of the light control member. ### Claim 9 (depends on 7) The laminated glass according to claim 7, wherein the second adhesive layer is in contact with the sealing member. ### Claim 10 (depends on 7) The laminated glass according to claim 7, wherein the second adhesive layer has a thickness of 1 μm or more and 1000 μm or less. ### Claim 11 (depends on 7) The laminated glass according to claim 7, wherein the second adhesive layer has a shear modulus at 25° C. of 1.0×103 Pa or more and 2.0×105 Pa or less. ### Claim 12 (depends on 1) The laminated glass according to claim 1, wherein the bonding portion has an ultraviolet absorber. ### Claim 13 (depends on 12) The laminated glass according to claim 12, wherein the ultraviolet absorber contains at least one member selected from the group consisting of a benzophenone compound, a benzotriazole compound, a triazine compound, an azomethine compound, an indole compound, a dibenzoyl resorcinol derivative, a benzodithiol compound and an oxazolone compound. ### Claim 14 (depends on 12) The laminated glass according to claim 12, wherein the ultraviolet absorber is an ultraviolet absorber having a moiety with high compatibility with the curable transparent resin bonded. ### Claim 15 (depends on 12) The laminated glass according to claim 12, wherein the curable transparent resin contains a silicone curable transparent resin, and the ultraviolet absorber contains a silicone-modified ultraviolet absorber. ### Claim 16 (depends on 12) The laminated glass according to claim 12, wherein the bonding portion has a transmittance for ultraviolet light having a wavelength of 380 nm of 0% or more and 20% or less. ### Claim 17 (depends on 1) The laminated glass according to claim 1, wherein both the first glass plate and the second glass plate have a curved shape. ### Claim 18 (depends on 1) The laminated glass according to claim 1, wherein the light control member has a light control device containing a liquid crystal. ### Claim 19 (depends on 18) The laminated glass according to claim 18, wherein the light control device has a rotational viscosity at 25° C. of 2000 mPa·s or less. ### Claim 20 A method for producing a laminated glass comprising a first glass plate, a second glass plate facing the first glass plate, and between the first glass plate and the second glass plate, a light control member to which a power feeder is connected, a bonding portion and a sealing member, which comprises a forming step of forming the sealing member on at least a part of the periphery of at least one of the first glass plate and the second glass plate in a plan view and forming the bonding portion containing a curable transparent resin on a principal surface of at least one of the first glass plate and the second glass plate, a laminating step of forming a laminate in which the first glass plate, the bonding portion and the second glass plate are laminated in this order, and the bonding portion is in contact with the first glass plate, the second glass plate, and a first principal surface, a second principal surface and side surfaces of a light control member to which a power feeder is connected, and a bonding step of bonding the first glass plate, the bonding portion, the second glass plate and the sealing member with one another in the laminate. ### Claim 21 (depends on 20) The method for producing a laminated glass according to claim 20, wherein in the bonding step, the absolute pressure applied to the bonding portion is less than 0.5 MPa and the temperature applied to the bonding portion is less than 120° C. ### Claim 22 (depends on 21) The method for producing a laminated glass according to claim 21, wherein in the bonding step, the temperature applied to the bonding portion is less than 100° C.