Schott Glass Technologies (suzhou) Co. Ltd.

Schott Ag

Feng He

Ning Da

Pengxiang Qian

Jose Zimmer

José Zimmer

Wei Xiao

Rainer Liebald

Markus Heiss-Chouquet

Chong Wang

Jiaqi Meng

Ulrich Peuchert

Andreas Ortner

Clemens Ottermann

Kurt Nattermann

Andreas Habeck

Jürgen Vogt

Junming Xue

Gerhard Lautenschlaeger

Thomas Wiegel

Armin Vogl

Huiyan Fan

Michael Drisch

Yunfei Hou

Julia Weisshuhn

Wentao Ju

Xi Wang

Mathew Shan

Inge Burger

An ultrathin chemically toughened and subsequently etched glass article is provided. The article has a thickness of less than or equal to 0.4 mm and a breakage height (given in mm) of more than 200 multiplied by the thickness (t given in mm)). Further, the article has a breakage bending radius (given in mm) of less than 100000 multiplied by the thickness (t given in mm) and divided by a surface compressive stress (in MPa) measured at a first surface.

Ultrathin glass with high impact resistance

The present disclosure relates to bendable elements. The bendable elements can be used in display covers for electronic devices such as smart phones. The elements have reduced delayed elastic deformation or creep when released from the influence of persistent mechanical stresses, e.g. unfolded from a folded position. The present disclosure also relates to covers for color filters, filter printed electronics, sensors for touch control panels, fingerprint sensors, mobile electronic devices, bendable/foldable displays that include the bendable elements as substrates, or other applications where a combination of high chemical stability, temperature stability, low gas permeability, flexibility, high strength, low thickness and premium cosmetic appearance is necessary. Besides consumer and industrial electronics the present disclosure could also be used for protection applications in industrial production or metrology.

Bendable element

A chemically toughened glass article is provided that has a thickness (t) of equal to or less than 0.4 mm, a first surface, a second surface, and a compressive stress region that is defined by a compressive stress (CS) of at least 100 MPa and at least one edge connecting the first surface and the second surface. The at least one edge has at least one chamfer with a chamfer width (A) and a chamfer height (B). The chamfer has a ratio of chamfer width/chamfer height (A/B) of between 1.5-20 and the chamfer has a ratio of chamfer width/glass thickness (A/t) of at least 0.5.

Ultrathin glass with special chamfer shape and high strength

A chemically toughenable or toughened glass has, before chemical toughening, a thickness t of at most 1100 μm. The glass comprises the following components: 45-75 mol-% SiO; 10-25 mol-% AlO; >1-11 mol-% LiO; 0-15 mol-% PO; 0-8 mol-% BO; and 0-5 mol-% TiO. The average number of bridging oxygen per polyhedron (BO) calculated as 2*4−2*(c(O)/(c(Si)+c(Al)+c(B)+c(P)+c(Ti))) is higher than 3.55. Upon chemical toughening, the linear dimension variation in the unit of percentage (V) is so low that the overall geometry variation (OGV) calculated as (DoL/t)/Vis higher than 0.8. DoL is the total depth of all ion-exchange layers on one side of the glass and DoL is more than 1 μm, when the glass is chemically toughened with NaNOonly, KNOonly or with both KNOand NaNO.

Lithium containing aluminosilicate glass with low expansion after chemical toughening

A method for chemical toughening a thin glass article with a thickness of at most 0.07 mm is provided. The method includes immersing the glass article into a bath of molten salt having a certain toughening temperature for a certain toughening time to form a toughened glass article; lifting the toughened glass article out of the bath of molten salt; post-toughening dwelling the toughened glass article for a certain dwelling time at a dwelling temperature that is higher than a melting point of the bath of molten salt and lower than a transition temperature (Tg) of the toughened glass article; and cooling and cleaning the toughened glass article.

Chemically toughened glass article having no optical orange skin and method for producing same

An ultrathin chemically toughened glass article has a thickness of no more than 0.4 mm. In order to improve the sharp impact resistance, the glass article has a breakage height (given in mm) of more than 50 multiplied by the thickness (t) of the glass article (given in mm). Further, it has a breakage bending radius (given in mm) of less than 100000 multiplied by the thickness (t) of the glass article (given in mm) and divided by the figure of the surface compressive stress (in MPa) measured at the first surface.

Flexible ultrathin glass with high contact resistance

An ultrathin glass article has a thickness of less than or equal to 0.5 mm. The glass has a low TTV and a large threshold diffusivity. The glass has a working point Tof more than 1100&#xb0; C. and a linear thermal expansion coefficient CTE of more than 6*10-6/&#xb0; C. in the temperature range between 25&#xb0; C. and 300&#xb0; C. A method for producing the article as well as the use of the article is also provided. The glass article can be chemically strengthened and forms surface compressive stress layers on surfaces and center tension layer in the center. The toughened ultrathin glass sheet is more flexible and has extraordinary thermal shock resistance which makes it easier to handle for processing.

High strength ultrathin glass and method of making the same

A method for making a bonded article, wherein a thin glass substrate is bonded on a support substrate in the absence of any interlayer by an electrostatic adhesion process with the assistance of external pressure, the pressure is applied constantly or stepwise during the adhesion process by use of a tool such as a roll or a wheel or other movable device with curved surface. The bonded article has no defects, e.g. bubbles or inclusions, in the bonded interface, which benefits transportation of the thin glass substrate and its post-processing as well. Such defect-free bonded article is also disclosed. Pressure supported electrostatic adhesion, initiated by electrostatic charges adhesion of a two members, e.g. a substrate member and a support member, is enabled to minimize, prevent and exclude defects, distortion between the adhered surfaces.

Bonded article of thin glass on support substrate, preparation method and use thereof

A method for producing an ultrathin chemically toughened glass article is provided that includes: providing an ultrathin glass sheet with a first surface and a second surface joined by at least one edge, having a thickness between the first and the second surface, chemically toughening the ultrathin glass sheet to produce an ultrathin toughened glass article. The method includes applying an edge pre-treatment to the at least one edge, preferably all edges, of the ultrathin glass sheet prior to the chemical toughening in order to reduce and/or blunt edge defects and to increase resistance to breakage of the ultrathin glass sheet during the chemical toughening.

Ultrathin chemically toughened glass article and method for the production of such a glass article

A shaped glass article is provided that is ultrathin, has two surfaces and one or more edges joining the two surfaces, and a thickness between the two surfaces. The shaped ultrathin glass article has at least one curved area with a non-vanishing surface curvature with a minimal curvature radius R if no external forces are applied. A method for producing a shaped glass article is also provided that includes providing an ultrathin glass with two surfaces and one or more edges joining the two surfaces, having a thickness between the two surfaces and shaping the ultrathin glass to a shaped ultrathin glass article by forming at least one curved area having a non-vanishing surface curvature with a minimal curvature radius R if no external forces are applied to the shaped ultrathin glass article.

Shaped glass article and method for producing such a shaped glass article

A glass ribbon in the form of a glass roll is provided that is optimized with respect to the requirements of a long service life and at the same time compact dimensions. A bending radius on the inner side of the thin glass roll is determined by performing breakage tests on samples of the glass material, statistical parameters are determined on the basis of the breakage tests, and the statistical parameters are converted into a range of bending radii which meet the requirements on service life and the most compact dimensions possible of the thin glass roll.

Thin glass roll and method for producing same

An electronic device structure and an ultra-thin glass sheet used therein. The electronic device structure includes a functional device and an ultra-thin glass above the functional device. The ultra-thin glass has a thickness of no more than 0.4 mm and also has a toughening layer, of which the thickness does not exceed 50% of the thickness of the ultra-thin glass. The ultra-thin glass has a total thickness variation of no more than 20 &#x3bc;m. The ultra-thin glass used in the electronic device structure according to the present invention provides quality assurance for subsequent potential processes, such as cutting, drilling, coating, screen-printing, laminating, gluing and the like, due to the toughening layer. Moreover, the ultra-thin glass improves functionality of the electronic device structure, in particular of the device, due to its small total thickness variation.

Electronic device glass structure

A chemically toughened ultrathin glass is provided. The glass has a thickness less than 500 &#x3bc;m and a surface compressive layer having a depth of at most 30 &#x3bc;m. The toughened ultrathin glass sheet is more flexible and has extraordinary thermal shock resistance with the glass being easier to handle for processing.

Chemically toughened flexible ultrathin glass

A thin lithium-aluminosilicate glass is provided. The glass is suitable for three dimensional precision molding and suitable for toughening, wherein after toughening, the glass has a center tension smaller than 50 Mpa, a surface compressive stress of 600-1200 Mpa, and a bending strength of up to 500 MPa. The glass also has a transition point lower than 550&#xb0; C.

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Jiangsu, China

Feng He