Schott Glass Technologies (Suzhou) Co. Ltd.

Chong Wang

Feng He

Jose Zimmer

Huiyan Fan

José Zimmer

Rainer Liebald

Ning Da

Junming Xue

Pengxiang Qian

Gerhard Lautenschlaeger

Armin Vogl

Yunfei Hou

Wenliang Ping

An ultrathin glass-ceramic article is provided having an article thickness (t) of equal to or less than 0.3 mm and an outer surface followed towards the inside of the article by an outer layer and a central part. The glass-ceramic has a crystal phase and an amorphous phase and the outer layer includes the crystal phase. The article has a gradient structure or a layered structure.

Ultrathin glass ceramic article and method for producing an ultrathin glass ceramic article

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

The present invention is directed to a kind of machinable glass ceramic which can be chemically toughened. The machinable and chemically toughenable glass ceramic, which comprises, as represented by weight percentage based on the following compositions, 25-75 wt % of SiO, 6-30 wt % of AlO, 0.1-30 wt % of NaO, 0-15 wt % of KO, 0-30 wt % of BO, 4-35 wt % of MgO, 0-4 wt % of CaO, 1-20 wt % of F, 0-10 wt % of ZrO, 0.1-10 wt % of PO, 0-1 wt % of CeOand 0-1 wt % of SnO, wherein PO+NaO&#x3e;3 wt %, and AlO+NaO+PO&#x3e;17 wt %. Mica crystalline phase can be formed in the glass ceramic and the glass ceramic can be chemically toughened by one step, two steps or multiple steps with depth of K-ion layer of at least 15 &#x3bc;m and surface compress stress of at least 300 MPa. The profile on depth of the ion exchange layer follows the complementary error function. Hardness can be improved by at least 20% after chemical toughening. The dimension deviation ratio is less than 0.06% by ion-exchanging.

Machinable and chemically toughenable fluorine glass-ceramic

An aluminosilicate glass for touch screens is provided. The glass includes, calculated based on weight percentage: SiO, 55 to 65%; NaO, 12 to 17%; AlO, 15 to 20%; KO, 2 to 6%; MgO, 3.9 to 10%; ZrO, 0 to 5%; ZnO, 0 to 4%; CaO, 0 to 4%; NaO+KO+MgO+ZnO+CaO, 15 to 28%; SnO, 0 to 1%; TiO+CeO, &#x2266;1%. A chemical strengthening method for glass also provided that includes ion exchange strengthening in a 100% KNOsalt bath, wherein a preheating temperature ranges from 370&#xb0; C. to 430&#xb0; C. and the treatment time is from 0.5 to 16 hours.

Aluminosilicate glass for touch screen

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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Suzhou, China

Chong Wang