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1. (WO2012026290) COVER GLASS FOR FLAT PANEL DISPLAYS AND PRODUCTION METHOD
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Latest bibliographic data on file with the International Bureau   
Pub. No.:    WO/2012/026290    International Application No.:    PCT/JP2011/067626
Publication Date: 01.03.2012 International Filing Date: 01.08.2011
IPC:
C03C 3/085 (2006.01), C03C 3/083 (2006.01), C03C 3/087 (2006.01), G02F 1/1335 (2006.01)
C CHEMISTRY; METALLURGY
03
GLASS; MINERAL OR SLAG WOOL
C
CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
3
Glass compositions
04
containing silica
076
with 40% to 90% silica by weight
083
containing aluminium oxide or an iron compound
085
containing an oxide of a divalent metal
C CHEMISTRY; METALLURGY
03
GLASS; MINERAL OR SLAG WOOL
C
CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
3
Glass compositions
04
containing silica
076
with 40% to 90% silica by weight
083
containing aluminium oxide or an iron compound
C CHEMISTRY; METALLURGY
03
GLASS; MINERAL OR SLAG WOOL
C
CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
3
Glass compositions
04
containing silica
076
with 40% to 90% silica by weight
083
containing aluminium oxide or an iron compound
085
containing an oxide of a divalent metal
087
containing calcium oxide, e.g. common sheet or container glass
G PHYSICS
02
OPTICS
F
DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1
Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
01
for the control of the intensity, phase, polarisation or colour
13
based on liquid crystals, e.g. single liquid crystal display cells
133
Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
1333
Constructional arrangements
1335
Structural association of optical devices, e.g. polarisers, reflectors, with the cell
Applicants: Asahi Glass Company, Limited. [JP/JP]; 5-1, Marunouchi 1-chome, Chiyoda-ku, Tokyo 1008405 (JP) (For All Designated States Except US).
ONO Kazutaka [JP/JP]; (JP) (For US Only).
AKIBA Shusaku [JP/JP]; (JP) (For US Only).
KUROKI Yuichi [JP/JP]; (JP) (For US Only)
Inventors: ONO Kazutaka; (JP).
AKIBA Shusaku; (JP).
KUROKI Yuichi; (JP)
Agent: OGURI Shohei; Eikoh Patent Firm, Toranomon East Bldg. 10F, 7-13, Nishi-Shimbashi 1-chome, Minato-ku, Tokyo 1050003 (JP)
Priority Data:
2010-187523 24.08.2010 JP
Title (EN) COVER GLASS FOR FLAT PANEL DISPLAYS AND PRODUCTION METHOD
(FR) VERRE DE COUVERTURE POUR AFFICHAGES À ÉCRANS PLATS ET SON PROCÉDÉ DE PRODUCTION
(JA) フラットパネルディスプレイ用カバーガラスおよび製造方法
Abstract: front page image
(EN)The present invention provides glass for cover glass for large display devices, said glass: having a surface compressive stress comparable to that when chemical strengthening has been conducted at a low temperature even when ion exchange has been conducted at a high temperature; undergoing little change in compressive stress even when a temperature change has occurred; and providing excellent productivity. The present invention pertains to a cover glass for flat panel displays obtained by chemically strengthening glass, and the molar ratio of Na20, Al2O3, MgO and ZrO2 in the glass before chemical strengthening satisfies formula (1). (Na20/2)/(Al2O3/2 + MgO + ZrO2) ≤ 0.85...formula (1)
(FR)Cette invention concerne un verre de couverture pour dispositifs à large affichage, ledit verre : ayant une contrainte de compression superficielle comparable à celle obtenue quand un renforcement chimique a été mis en œuvre à basse température, même si l'échange d'ions s'est opéré à une température élevée ; subissant une variation de la contrainte de compression qui reste petite, même dans le cas où un changement de température s'est produit ; et manifestant une excellente productivité. Cette invention concerne un verre de couverture pour affichages à écrans plats obtenu par renforcement chimique du verre, et ayant un rapport molaire de Na2O, Al2O3, MgO et ZrO2 dans le verre avant le renforcement chimique qui satisfait la formule (1). (Na2O/2)/(Al2O3/ 2 + MgO + ZrO2) ≤ 0,85...formule (1).
(JA)　本発明は、高温でイオン交換を行った場合でも低温で化学強化を行った場合と同程度の表面圧縮応力を有し、温度変化が生じた場合でも圧縮応力の変化が小さい、生産性に優れた大型ディスプレイ装置用カバーガラス用のガラスを提供する。本発明は、ガラスを化学強化して得られるフラットパネルディスプレイ用カバーガラスであって、化学強化前のガラスにおけるＮａ２Ｏ、Ａｌ２Ｏ３、ＭｇＯおよびＺｒＯ２のモル比が式（１）を満たすフラットパネルディスプレイ用カバーガラスに関する。 （Ｎａ２Ｏ／２）／（Ａｌ２Ｏ３／２＋ＭｇＯ＋ＺｒＯ２）≦０．８５　…式（１）
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Org. (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (EAPO) (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (OAPI) (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)