| (19) |  |
| (11) | EP 4 234 504 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
| (88) | Date of publication A3: | | 13.09.2023 Bulletin 2023/37 |
| (43) | Date of publication A2: | | 30.08.2023 Bulletin 2023/35 |
| (22) | Date of filing: 13.02.2017 |
| | (51) | International Patent Classification (IPC): |
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| (84) | Designated Contracting States: | | AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
| (30) | Priority: | 22.02.2016 US 201662298246 P
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| (62) | Application number of the earlier application in accordance with Art. 76 EPC: | | 17706943.2 / 3419940 |
| (71) | Applicant: Corning Incorporated | | Corning, New York 14831 (US) |
| | (72) | Inventors: | | - ELLISON, Adam James
New York, 14830 (US) - GOMEZ, Sinue
New York, 14830 (US) - KATO, Yoshiaki
111 Shih Lin (TW)
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| (74) | Representative: Elkington and Fife LLP | | Prospect House
8 Pembroke Road
Sevenoaks, Kent TN13 1XR
Sevenoaks, Kent TN13 1XR (GB) |
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| (54) | ALKALI-FREE BOROALUMINO SILICATE GLASSES |
(57) Described herein are alkali-free, boroalumino silicate glasses exhibiting desirable physical and chemical properties for use as substrates in flat panel display devices, such as, active matrix liquid crystal displays (AMLCDs) and active matrix organic light emitting diode displays (AMOLEDs). In accordance with certain of its aspects, the glasses possess good dimensional stability as a function of temperature.