# US 12,109,780 B2 · Carrier glass and method for producing same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,109,780 B2 - Document ID: US12109780B2 - Status: Granted - Kind: B2 - Application number: 16/607,403 - Filed: 2018-04-24 - Published: 2020-04-30 - Granted: 2024-10-08 - Earliest claimed: 2017-04-27 - Assignees: Nippon Electric Glass Co., Ltd. - Applicants: Nippon Electric Glass Co., Ltd. - Inventors: Atsuki Saito - Web page: https://patentgrep.com/patent/US12109780B2 ## CPC - B32B 17/10018: {comprising only one glass sheet} - B32B 17/10: of synthetic resin - C03B 5/027: by passing an electric current between electrodes immersed in the glass bath, i.e. by direct resistance heating - C03B 17/06: Forming glass sheets - C03B 17/064: {by the overflow downdraw fusion process; Isopipes therefor} - C03C 3/087: containing calcium oxide, e.g. common sheet or container glass - C03C 3/091: containing aluminium - B32B 2250/02: 2 layers - B32B 2457/206: Organic displays, e.g. OLED - C03B 5/43: Use of materials for furnace walls, e.g. fire-bricks - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - C03B: MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES - 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 A carrier glass of the present invention is a carrier glass for carrying an organic resin substrate, wherein the carrier glass has a flat sheet shape having a thickness of from 0.1 mm to 1.2 mm, wherein the carrier glass has a content of iron in glass in terms of Fe2O3 of from 45 ppm by mass to 130 ppm by mass, and wherein the carrier glass has a transmittance at a wavelength of 308 nm in a thickness direction of from 71% to 81%. ## Claims ### Claim 1 A carrier glass for carrying an organic resin substrate, wherein the carrier glass has a flat sheet shape having a thickness of from 0.1 mm to 1.2 mm, wherein the carrier glass has a content of iron in glass in terms of Fe2O3 of from 45 ppm by mass to 130 ppm by mass, wherein the carrier glass has a transmittance at a wavelength of 308 nm in a thickness direction of from 71%to 81%, wherein the carrier glass has a ratio of (MgO+CaO+SrO+BaO)/Al2O3 in terms of mass % of from 0.90 to 1.40, wherein the carrier glass has a specific Young's modulus that is greater than 29.5 GPa/g·cm-3, and wherein the carrier glass comprises as a glass composition, in terms of mass %, 0% to 6% of B2O3, and 0% to 6% of MgO, and is free of P2O5. ### Claim 2 (depends on 1) The carrier glass according to claim 1, wherein the carrier glass has a content of Li2O+Na2O+K2O in a glass composition of less than 0.20 mass %. ### Claim 3 (depends on 1) The carrier glass according to claim 1, wherein the carrier glass has a β-OH value of 0.20/mm or less. ### Claim 4 (depends on 1) The glass carrier glass according to claim 1, wherein the carrier glass comprises as a glass composition, in terms of mass % on a basis of the following oxides, 55% to 65% of SiO2, 15% to 23% of Al2O3, 0% to 6% of B2O3, 0% to less than 0.20% of Li2O+Na2O+K2O, 0% to 6% of MgO, 0.1% to 10% of CaO, 0% to 10% of SrO, 0% to 13% of BaO, 60 ppm to 130 ppm of Fe2O3, 0% to less than 0.010% of As2O3, and 0% to less than 0.010% of Sb2O3. ### Claim 5 (depends on 1) The carrier glass according to claim 1, wherein the carrier glass has a thermal compaction rate of 20 ppm or less when the carrier glass is increased in temperature from normal temperature at a rate of 5° C./min, kept at 500° C. for 1 hour, and decreased in temperature at a rate of 5° C./min. ### Claim 6 (depends on 1) The carrier glass according to claim 1, wherein the carrier glass has a liquidus temperature of 1,300° C. or less. ### Claim 7 (depends on 1) The carrier glass according to claim 1, wherein the carrier glass has a temperature at a viscosity at high temperature of 102.5 dPa·s of 1,700° C. or less. ### Claim 8 (depends on 1) A glass-resin laminate, comprising a carrier glass and an organic resin substrate laminated on each other, wherein the carrier glass comprises the carrier glass of claim 1. ### Claim 9 (depends on 2) The carrier glass according to claim 2, wherein the carrier glass has a β-OH value of 0.20/mm or less. ### Claim 10 (depends on 2) A glass-resin laminate, comprising a carrier glass and an organic resin substrate laminated on each other, wherein the carrier glass comprises the carrier glass of claim 2. ### Claim 11 (depends on 3) A glass-resin laminate, comprising a carrier glass and an organic resin substrate laminated on each other, wherein the carrier glass comprises the carrier glass of claim 3. ### Claim 12 (depends on 4) A glass-resin laminate, comprising a carrier glass and an organic resin substrate laminated on each other, wherein the carrier glass comprises the carrier glass of claim 4. ### Claim 13 (depends on 5) A glass-resin laminate, comprising a carrier glass and an organic resin substrate laminated on each other, wherein the carrier glass comprises the carrier glass of claim 5. ### Claim 14 (depends on 6) A glass-resin laminate, comprising a carrier glass and an organic resin substrate laminated on each other, wherein the carrier glass comprises the carrier glass of claim 6. ### Claim 15 (depends on 7) A glass-resin laminate, comprising a carrier glass and an organic resin substrate laminated on each other, wherein the carrier glass comprises the carrier glass of claim 7. ### Claim 16 (depends on 1) The carrier glass according to claim 1, wherein the carrier glass has a content of B2O3 that is 0.72 mass % or less. ### Claim 17 (depends on 1) The carrier glass according to claim 1, wherein the carrier glass has a content of BaO is 7.64 mass % to 13 mass %.