# US 12,005,677 B2 · Article comprising puncture resistant laminate with ultra-thin glass layer > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,005,677 B2 - Document ID: US12005677B2 - Status: Granted - Kind: B2 - Application number: 17/270,916 - Filed: 2019-08-13 - Published: 2021-06-17 - Granted: 2024-06-11 - Earliest claimed: 2018-08-24 - Assignees: Corning Incorporated - Applicants: Corning Incorporated - Inventors: Shinu Baby; Kuan-Ting Kuo; Yousef Kayed Qaroush; Robert Lee Smith, III - Web page: https://patentgrep.com/patent/US12005677B2 ## CPC - 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} - G02F 1/133305: {Flexible substrates, e.g. plastics, organic film} - G06F 1/1626: {with a single-body enclosure integrating a flat display, e.g. Personal Digital Assistants [PDAs]} - G06F 1/1637: {Details related to the display arrangement, including those related to the mounting of the display in the housing} - G06F 1/1656: {Details related to functional adaptations of the enclosure, e.g. to provide protection against EMI, shock, water, or to host detachable peripherals like a mouse or removable expansions units like PCMCIA cards, or to provide access to internal components for maintenance or to removable storage supports like CDs or DVDs, or to mechanically mount accessories (mounting of accessories to a computer display G06F1/1607; display hoods G06F1/1603; cooling arrangements for portable computers G06F1/203)} - H10K 59/871: {Self-supporting sealing arrangements} - B32B 2307/558: Impact strength, toughness - B32B 2307/581: Resistant to cut - B32B 2307/584: Scratch resistance - B32B 2457/20: Displays, e.g. liquid crystal displays, plasma displays - B32B 2571/00: Protective equipment - G02F 1/133311: {Environmental protection, e.g. against dust or humidity} - G02F 1/133331: {Cover glasses} - 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 - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract An article including a laminate having a substrate and an ultra-thin cover glass layer bonded to atop surface of the substrate. The ultra-thin cover glass layer has a thickness in the range of 1 micron to 49 microns. The ultra-thin cover glass layer is bonded to the top surface of the substrate with an optically transparent adhesive layer having a thickness in the range of 5 microns to 50 microns. ## Claims ### Claim 1 An article comprising: a laminate comprising: a substrate; a cover glass layer bonded to a top surface of the substrate, the cover glass layer comprising a thickness in a range of 1 micron to 30 microns; and an optically transparent adhesive layer comprising a thickness in a range of 5 microns to 50 microns that bonds a bottom surface of the cover glass layer to the top surface of the substrate, wherein the cover glass layer comprises an alkali-containing aluminosilicate glass comprising SnO2 at a mol % of 0.08 mol % or less, wherein the laminate achieves a bend radius of 3 mm, and wherein the laminate comprises an impact resistance defined by the capability of the cover glass layer to avoid failure at a puncture load of 2.25 kilograms-force or more in a Puncture Test. ### Claim 2 (depends on 1) The article of claim 1, wherein the optically transparent adhesive layer comprises a thickness in the range of 25 microns to 50 microns. ### Claim 3 (depends on 1) The article of claim 1, wherein the cover glass layer is directly bonded to the top surface of the substrate with the optically transparent adhesive layer. ### Claim 4 (depends on 1) The article of claim 1, wherein the laminate comprises an impact resistance defined by the capability of the cover glass layer to avoid failure at a pen drop height of 8 centimeters or more, wherein the pen drop height is measured according to a Pen Drop Test. ### Claim 5 (depends on 1) The article of claim 1, wherein the cover glass layer is a redrawn glass layer drawn to the thickness of the cover glass layer. ### Claim 6 (depends on 1) The article of claim 1, wherein the cover glass layer comprises: 55 mol % to 70 mol % SiO2; 10 mol % to 20 mol % Al2O3; and 10 mol % to 20 mol % Na2O. ### Claim 7 (depends on 1) The article of claim 1, wherein the cover glass layer comprises a compressive stress at least at one of a top surface or the bottom surface of the cover glass layer, and a concentration of metal oxide that is different at least at two points through the thickness of the cover glass layer. ### Claim 8 (depends on 1) The article of claim 1, wherein the substrate comprises an electronic display comprising a display surface defining at least a portion of the top surface of the substrate. ### Claim 9 (depends on 1) The article of claim 1, comprising a coating layer disposed on a top surface of the cover glass layer. ### Claim 10 (depends on 9) The article of claim 9, wherein the coating layer comprises a coating layer selected from the group consisting of: an anti-reflection coating layer, an anti-glare coating layer, an anti-fingerprint coating layer, an anti-splinter coating layer, and an anti-microbial coating layer. ### Claim 11 (depends on 1) The article of claim 1, wherein the laminate is devoid of a polymeric hard-coating layer disposed on a top surface of the cover glass layer. ### Claim 12 (depends on 1) The article of claim 1, wherein the article is a consumer electronic product and the substrate comprises an electronic display, the consumer electronic product comprising: a housing comprising a front surface, a back surface and side surfaces; and electrical components positioned at least partially within the housing, the electrical components comprising a controller, a memory, and the electronic display, the electronic display at or adjacent the front surface of the housing, wherein the cover glass layer forms at least a portion of the housing. ### Claim 13 (depends on 1) The article of claim 1, wherein the alkali-containing aluminosilicate glass comprises 0.04 mol % to 0.08 mol % SnO2. ### Claim 14 A method of making a laminate, the method comprising: bonding a cover glass layer to a top surface of a substrate, the cover glass layer comprising a thickness in the range of 1 microns to 30 microns, wherein a bottom surface of the cover glass layer is bonded to the top surface of the substrate with an optically transparent adhesive layer comprising a thickness in a range of 5 microns to 50 microns, wherein the cover glass layer comprises an alkali-containing aluminosilicate glass comprising SnO2 at a mol % of 0.08 mol % or less, wherein the laminate achieves a bend radius of 3 mm, and wherein the laminate comprises an impact resistance defined by the capability of the cover glass layer to avoid failure at a puncture load of 2.25 kilograms-force or more in a Puncture Test. ### Claim 15 (depends on 14) The method of claim 14, further comprising forming the cover glass layer with a redrawing process, wherein the redrawing process comprises redrawing the cover glass layer to the thickness of the cover glass layer. ### Claim 16 (depends on 14) The method of claim 14, further comprising coating a top surface of the cover glass layer with a coating layer.