# US 12,595,205 B2 · Glass substrate, cover glass, assembly, assembly manufacturing method, in-vehicle display device, and in-vehicle display device manufacturing method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,595,205 B2 - Document ID: US12595205B2 - Status: Granted - Kind: B2 - Application number: 18/426,403 - Filed: 2024-01-30 - Published: 2024-05-23 - Granted: 2026-04-07 - Earliest claimed: 2019-07-10 - Assignees: AGC Inc. - Applicants: AGC Inc. - Inventors: Izuru Kashima; Yusuke Fujiwara - Web page: https://patentgrep.com/patent/US12595205B2 ## CPC - C03C 27/06: Joining glass to glass by processes other than fusing (fusing C03B23/20; units for use as elements for closing wall or like openings and comprising two or more parallel glass panes in spaced relationship, the panes being permanently secured together E06B3/66) - B32B 3/26: characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids {(foam layer B32B5/18; layer of synthetic resin characterised by fillers that create voids or cavities B32B27/205); characterised by an apertured layer} - B32B 3/30: characterised by a layer formed with recesses or projections, e.g. {hollows, grooves, protuberances, ribs (apertured layer B32B3/266; layer with cavities or internal voids B32B3/26)} - B32B 7/08: by mechanical means - 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 17/10: of synthetic resin - B32B 27/36: comprising polyesters - B60K 35/10: Input arrangements, i.e. from user to vehicle, associated with vehicle functions or specially adapted therefor - B60K 35/22: Display screens - B60K 35/50: Instruments characterised by their means of attachment to or integration in the vehicle (B60K35/231 takes precedence) - B60K 35/60: Instruments characterised by their location or relative disposition in or on vehicles (arrangements of lighting devices on dashboards B60Q3/10) - C03B 23/023: by bending - C03C 15/00: Surface treatment of glass, not in the form of fibres or filaments, by etching (etching or surface-brightening compositions, in general C09K13/00) - C03C 21/002: {to perform ion-exchange between alkali ions (C03C21/005 takes precedence)} - B32B 2457/20: Displays, e.g. liquid crystal displays, plasma displays - B32B 2605/00: Vehicles - B60K 2360/1438: Touch screens - B60K 2360/1523: Matrix displays - C03C 2218/32: After-treatment - C03C 2218/34: Masking - 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 - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES - C03B: MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES ## Abstract A glass substrate includes a thin portion having a first surface and a second surface opposed to the first surface, a thick portion having a first surface and a second surface opposed to the first surface and having a sheet thickness t3 that is larger than a sheet thickness t2 of the thin portion, a connection portion having a first connection surface and a second connection surface, the first connection surface connecting the first surface of the thin portion to the first surface of the thick portion, the second connection surface connecting the second surface of the thin portion to the second surface of the thick portion. The first connection surface has a curvature radius of more than or equal to 400 μm. ## Claims ### Claim 1 An assembly comprising: an uneven structure; a glass substrate that is assembled to the uneven structure; and two to four display panels, wherein the glass substrate comprises: a thin portion having a first surface and a second surface opposed to the first surface; a thick portion having a first surface and a second surface opposed to the first surface and having a sheet thickness t3 that is larger than a sheet thickness t2 of the thin portion; and a connection portion having a first connection surface and a second connection surface, the first connection surface connecting the first surface of the thin portion to the first surface of the thick portion, the second connection surface connecting the second surface of the thin portion to the second surface of the thick portion, wherein the uneven structure includes a recess and, in an assembled state, the glass substrate is elastically deformed such that the thin portion extends into the recess, wherein, in the assembled state, only the thin portion faces the recess, wherein at least a first of the display panels is disposed to face the thin portion, and at least a second of the display panels is disposed to face the thick portion, wherein in a state where the glass substrate is not elastically deformed, the second surface of the thin portion, the second connection surface of the connection portion, and the second surface of the thick portion lie flush with each other, and wherein the first connection surface has a curvature radius of more than or equal to 400 μm. ### Claim 2 (depends on 1) The assembly according to claim 1, wherein a sheet thickness t4 of the connection portion is less than or equal to 0.5 mm. ### Claim 3 (depends on 1) The assembly according to claim 1, wherein the sheet thickness t2 of the thin portion is 0.05 mm or more and 0.8 mm or less, and the sheet thickness t3 of the thick portion is 0.5 mm or more and 2.5 mm or less. ### Claim 4 (depends on 1) The assembly according to claim 1, wherein the connection portion comprises an overhang part. ### Claim 5 (depends on 1) The assembly according to claim 1, wherein the glass substrate is a chemically strengthened glass. ### Claim 6 (depends on 1) A method of manufacturing an assembly, the method comprising assembling the glass substrate as defined in claim 1 to an uneven structure, wherein the thin portion of the glass substrate is elastically deformed according to a shape of the uneven structure and assembled to the uneven structure. ### Claim 7 (depends on 1) An in-vehicle display device comprising: an instrument cluster provided in front of a driving seat; a center information display provided in front of an area between the driving seat and a passenger seat; and the glass substrate as defined in claim 1, wherein the instrument cluster comprises an uneven structure, wherein the thin portion of the glass substrate is assembled to the uneven structure with the thin portion elastically deformed according to a shape of the uneven structure, and wherein the thick portion of the glass substrate is assembled to the center information display. ### Claim 8 (depends on 1) A method of manufacturing an in-vehicle display, the method comprising assembling the glass substrate as defined in claim 1 to an instrument cluster provided in front of a driving seat and a center information display provided in front of an area between the driving seat and a passenger seat, wherein the instrument cluster comprises uneven structure, wherein the thin portion of the glass substrate is elastically deformed according to a shape of the uneven structure and assembled to the uneven structure, and wherein the thick portion of the glass substrate is assembled to the center information display.