# US 10,310,648 B2 · Method for fabricating reinforced glass substrate, method for fabricating display device and the display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,310,648 B2 - Document ID: US10310648B2 - Status: Granted - Kind: B2 - Application number: 15/472,498 - Filed: 2017-03-29 - Published: 2017-10-05 - Granted: 2019-06-04 - Earliest claimed: 2016-03-30 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Seung Kim; Hoikwan Lee; Seungho Kim; Jeongwoo Park - Web page: https://patentgrep.com/patent/US10310648B2 ## CPC - G06F 3/0412: {Digitisers structurally integrated in a display} - G06F 3/0443: {using a single layer of sensing electrodes} - G06F 3/0445: {using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer} - H10D 86/0212: {comprising manufacture, treatment or coating of substrates} - H10D 86/411: {characterised by materials, geometry or structure of the substrates} - H10D 86/60: wherein the TFTs are in active matrices - H10K 77/10: Substrates, e.g. flexible substrates - G06F 2203/04103: Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices - H10K 59/12: Active-matrix OLED [AMOLED] displays - H10K 59/40: OLEDs integrated with touch screens - Y02E 10/549: Organic PV cells - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A method for fabricating a reinforced glass substrate includes forming a plurality of groove patterns in at least one surface of a plate glass, applying an ion exchange paste to the at least one surface in which the groove patterns are formed, applying an electric field to the plate glass coated with the ion exchange paste to form a reinforced plate glass, and cutting the reinforced plate glass to form a reinforced glass substrate. ## Claims ### Claim 1 A method for fabricating a reinforced glass substrate, the method comprising: forming a plurality of groove patterns in at least one surface of a plate glass; applying an ion exchange paste to the at least one surface in which the groove patterns are formed such that the ion exchange paste covers the at least one surface and fills the groove patterns; applying an electric field to the plate glass coated with the ion exchange paste to form a reinforced plate glass; and cutting the reinforced plate glass to form a reinforced glass substrate. ### Claim 2 (depends on 1) The method as claimed in claim 1, wherein forming the groove patterns is performed by applying laser or heat energy to the at least one surface. ### Claim 3 (depends on 1) The method as claimed in claim 1, wherein forming the groove patterns includes forming a plurality of first groove patterns that extend in a first direction and that are spaced apart from each other in a second direction crossing the first direction on a first surface of the plate glass. ### Claim 4 (depends on 3) The method as claimed in claim 3, wherein each of the first groove patterns is formed to be concave when viewed from an upper side of the plate glass. ### Claim 5 (depends on 3) The method as claimed in claim 3, wherein forming the groove patterns further includes forming a plurality of second groove patterns on a second surface of the plate glass, the second surface being an opposite surface of the plate glass from the first surface. ### Claim 6 (depends on 5) The method as claimed in claim 5, wherein forming the second groove patterns includes forming the second groove patterns to extend in the first direction and to be spaced apart from each other in the second direction. ### Claim 7 (depends on 5) The method as claimed in claim 5, wherein each of the second groove patterns is formed to be concave, when viewed from a lower side of the plate glass. ### Claim 8 (depends on 5) The method as claimed in claim 5, wherein each of the second groove patterns is formed to overlap a respective one of the first groove patterns. ### Claim 9 (depends on 5) The method as claimed in claim 5, wherein applying the ion exchange paste includes: applying the ion exchange paste to contact the first surface in which the first groove patterns are formed, thereby forming a first ion exchange paste layer; and applying the ion exchange paste to contact the second surface in which the second groove patterns are formed, thereby forming a second ion exchange paste layer. ### Claim 10 (depends on 9) The method as claimed in claim 9, wherein forming the reinforced plate glass includes: connecting the first ion exchange paste layer to a first electrode; connecting the second ion exchange paste layer to a second electrode; and applying a voltage to at least one of the first electrode and the second electrode. ### Claim 11 (depends on 1) The method claim 1, wherein the ion exchange paste as applied contains K+ ions. ### Claim 12 (depends on 1) The method as claimed in claim 1, wherein forming the reinforced glass substrate includes applying laser energy or a cutting wheel to cut the reinforced plate glass, thereby forming the reinforced glass substrate. ### Claim 13 (depends on 1) The method as claimed in claim 1, wherein forming the reinforced glass substrate includes cutting the reinforced plate glass along a cutting reference line that overlaps at least one of the groove patterns to form the reinforced glass substrate. ### Claim 14 (depends on 1) The method as claimed in claim 1, wherein, the reinforced glass substrate includes: a tensile stress layer that receives a tensile stress; a first compressive stress layer that contacts one surface of the tensile stress layer to receive a compressive stress; and a second compressive stress layer that contacts another surface of the tensile stress layer to receive a compressive stress. ### Claim 15 (depends on 1) The method as claimed in claim 1, wherein forming the reinforced glass substrate includes forming the reinforced glass substrate to have at least one end having a thickness that is less than a thickness of a region adjacent to a center of gravity of the reinforced glass substrate. ### Claim 16 (depends on 1) The method as claimed in claim 1, further including cleaning the reinforced plate glass. ### Claim 17 A method for fabricating a display device, the method comprising: forming a plurality of groove patterns in at least one surface of a plate glass; applying ion exchange paste to the at least one surface in which the groove patterns are formed such that the ion exchange paste covers the at least one surface and fills the groove patterns; applying an electric field to the plate glass coated with the ion exchange paste to form a reinforced plate glass; cutting the reinforced plate glass to form a reinforced glass substrate; and forming a display device including the reinforced glass substrate. ### Claim 18 (depends on 17) The method as claimed in claim 17, wherein forming the display device includes at least one of: forming a window member; forming a touch sensing unit; and forming a display panel. ### Claim 19 (depends on 17) The method claim 17, wherein forming the groove patterns is performed by applying laser or heat energy to the at least one surface. ### Claim 20 (depends on 17) The method as claimed in claim 17, wherein forming the reinforced glass substrate includes providing laser energy or a cutting wheel to cut the reinforced plate glass, thereby forming the reinforced glass substrate.