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1. WO2012026290 - COVER GLASS FOR FLAT PANEL DISPLAYS AND PRODUCTION METHOD

Publication Number WO/2012/026290
Publication Date 01.03.2012
International Application No. PCT/JP2011/067626
International Filing Date 01.08.2011
IPC
C03C 3/085 2006.1
CCHEMISTRY; METALLURGY
03GLASS; MINERAL OR SLAG WOOL
CCHEMICAL 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
3Glass compositions
04containing silica
076with 40% to 90% silica by weight
083containing aluminium oxide or an iron compound
085containing an oxide of a divalent metal
C03C 3/083 2006.1
CCHEMISTRY; METALLURGY
03GLASS; MINERAL OR SLAG WOOL
CCHEMICAL 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
3Glass compositions
04containing silica
076with 40% to 90% silica by weight
083containing aluminium oxide or an iron compound
C03C 3/087 2006.1
CCHEMISTRY; METALLURGY
03GLASS; MINERAL OR SLAG WOOL
CCHEMICAL 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
3Glass compositions
04containing silica
076with 40% to 90% silica by weight
083containing aluminium oxide or an iron compound
085containing an oxide of a divalent metal
087containing calcium oxide, e.g. common sheet or container glass
G02F 1/1335 2006.1
GPHYSICS
02OPTICS
FDEVICES 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
1Devices 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
01for the control of the intensity, phase, polarisation or colour
13based on liquid crystals, e.g. single liquid crystal display cells
133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
1333Constructional arrangements
1335Structural association of cells with optical devices, e.g. polarisers or reflectors
CPC
C03C 21/002
CCHEMISTRY; METALLURGY
03GLASS; MINERAL OR SLAG WOOL
CCHEMICAL 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
21Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface
001in liquid phase, e.g. molten salts, solutions
002to perform ion-exchange between alkali ions
C03C 3/085
CCHEMISTRY; METALLURGY
03GLASS; MINERAL OR SLAG WOOL
CCHEMICAL 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
3Glass compositions
04containing silica
076with 40% to 90% silica, by weight
083containing aluminium oxide or an iron compound
085containing an oxide of a divalent metal
G02F 1/133308
GPHYSICS
02OPTICS
FDEVICES 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
1Devices 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
01for the control of the intensity, phase, polarisation or colour 
13based on liquid crystals, e.g. single liquid crystal display cells
133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
1333Constructional arrangements; ; Manufacturing methods
133308Support structures for LCD panels, e.g. frames or bezels
G02F 1/133331
GPHYSICS
02OPTICS
FDEVICES 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
1Devices 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
01for the control of the intensity, phase, polarisation or colour 
13based on liquid crystals, e.g. single liquid crystal display cells
133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
1333Constructional arrangements; ; Manufacturing methods
133308Support structures for LCD panels, e.g. frames or bezels
133331Cover glasses
Applicants
  • 旭硝子株式会社 Asahi Glass Company, Limited. [JP]/[JP] (AllExceptUS)
  • 小野 和孝 ONO Kazutaka [JP]/[JP] (UsOnly)
  • 秋葉 周作 AKIBA Shusaku [JP]/[JP] (UsOnly)
  • 黒木 有一 KUROKI Yuichi [JP]/[JP] (UsOnly)
Inventors
  • 小野 和孝 ONO Kazutaka
  • 秋葉 周作 AKIBA Shusaku
  • 黒木 有一 KUROKI Yuichi
Agents
  • 小栗 昌平 OGURI Shohei
Priority Data
2010-18752324.08.2010JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
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
(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NaO、Al、MgOおよびZrO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。 (NaO/2)/(Al/2+MgO+ZrO)≦0.85 …式(1)
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