Patents by Inventor Pengxiang Qian
Pengxiang Qian has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11846786Abstract: A diffractive optical element is provided that includes at least two layers with different etching speeds for dry etching process. The diffractive optical element has a substrate of glass and a microstructure layer arranged on the substrate. The ratio of dry etching speed in thickness direction of the substrate to that of the microstructure layer is no more than 1:2 so that the substrate functions as an etching stop layer. The ratio of dry etching speed in horizontal direction of the substrate is substantially equal to that of the microstructure layer. The composition of glass includes, but is not limited to, Al2O3, alkaline material (M2O) and alkaline earth material (MO), where the weight percentage of Al2O3+M2O+MO>=5%.Type: GrantFiled: July 1, 2020Date of Patent: December 19, 2023Assignee: SCHOTT GLASS TECHNOLOGIES (SUZHOU) CO. LTD.Inventors: Yanquan Shan, Guangjun Zhang, Pengxiang Qian, Thomas Wiegel
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Patent number: 11827562Abstract: The present disclosure relates to glass articles, a method of making the glass articles, and uses of the glass articles. The glass article has a UV-transmittance of more than 90% at 350 nm and at 500 nm and a total amount of Si2, B2O3 and Al2O3 of at least 75 mol %. The article is preferably used in the fields of biotechnology, MEMS, CIS, MEMS-like pressure sensor, display, micro array, electronic devices, microfluidics, semiconductor, high precision equipment, camera imaging, display technologies, sensor/semicon, electronic devices, home appliance, diagnostic product, and/or medical device.Type: GrantFiled: June 19, 2020Date of Patent: November 28, 2023Assignee: SCHOTT GLASS TECHNOLOGIES (SUZHOU) CO. LTDInventors: Huiyan Fan, Junming Xue, Pengxiang Qian, Matthias Jotz, Fredrik Prince
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Patent number: 11225057Abstract: 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.Type: GrantFiled: December 21, 2015Date of Patent: January 18, 2022Assignee: SCHOTT GLASS TECHNOLOGIES (SUZHOU) CO. LTD.Inventors: Pengxiang Qian, Chong Wang, Feng He, Yunfei Hou, Rainer Liebald
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Publication number: 20210321805Abstract: A drinking implement includes a first end section with a first opening and a second end section with a second opening. A wall made of glass extends from the first opening to the second opening. At least one of the first end section or the second end section is designed as a specific end section having at least partially a ridge, an outer edge, and an inner edge. An outer transition angle and an inner transition angle both have absolute values of less than 90 degrees.Type: ApplicationFiled: June 23, 2021Publication date: October 21, 2021Applicants: Schott AG, SCHOTT Glass Technologies (Suzhou) Co. Ltd.Inventors: Fritz Wintersteller, Bernd Hoppe, Thomas Wedlich, Markus Riedl, Gottfried Haas, Pengxiang Qian, Junming Xue, Folker Steden, Takahisa Uchida, Csaba Debreczeny
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Patent number: 11059738Abstract: A low CTE boro-aluminosilicate glass having a low brittleness for use in wafer-level-packaging (WLP) applications is disclosed. The glass comprises a composition in mol-% of SiO2: 60-85, Al2O3: 1-17, B2O3: 8-20, Na2O: 0-5, K2O: 0-5, MgO: 0-10, CaO: 0-10, SrO: 0-10, and BaO: 0-10. An average number of non-bridging oxygen per polyhedron (NBO) is equal to or larger than ?0.2 and a ratio B2O3/Al2O3 is equal to or larger than 0.5. The NBO is defined as NBO=2×Omol/(Simol+Almol+Bmol)?4. A glass carrier wafer made from the low CTE boro-aluminosilicate glass and a use thereof as a glass carrier wafer for the processing of a silicon substrate are also disclosed, as well as a method for providing a low CTE boro-aluminosilicate glass.Type: GrantFiled: August 1, 2018Date of Patent: July 13, 2021Assignee: Schott Glass Technologies (Suzhou) Co. LtdInventors: Pengxiang Qian, Yunfei Hou, Junming Xue, Rainer Liebald, Hiroshi Kuroki
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Patent number: 10974990Abstract: 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.Type: GrantFiled: March 10, 2017Date of Patent: April 13, 2021Assignee: SCHOTT GLASS TECHNOLOGIES (SUZHOU) CO. LTD.Inventors: Ning Da, Feng He, Pengxiang Qian
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Patent number: 10941067Abstract: 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.Type: GrantFiled: September 20, 2017Date of Patent: March 9, 2021Assignee: SCHOTT GLASS TECHNOLOGIES (SUZHOU) CO. LTD.Inventors: Feng He, Ning Da, Pengxiang Qian
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Publication number: 20210003855Abstract: A diffractive optical element is provided that includes at least two layers with different etching speeds for dry etching process. The diffractive optical element has a substrate of glass and a microstructure layer arranged on the substrate. The ratio of dry etching speed in thickness direction of the substrate to that of the microstructure layer is no more than 1:2 so that the substrate functions as an etching stop layer. The ratio of dry etching speed in horizontal direction of the substrate is substantially equal to that of the microstructure layer. The composition of glass includes, but is not limited to, Al2O3, alkaline material (M2O) and alkaline earth material (MO), where the weight percentage of Al2O3+M2O+MO>=5%.Type: ApplicationFiled: July 1, 2020Publication date: January 7, 2021Applicant: SCHOTT Glass Technologies (Suzhou) Co. Ltd.Inventors: Yanquan SHAN, Guangjun ZHANG, Pengxiang QIAN, Thomas WIEGEL
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Publication number: 20200317559Abstract: The present disclosure relates to glass articles, a method of making the glass articles, and uses of the glass articles. The glass article has a UV-transmittance of more than 90% at 350 nm and at 500 nm and a total amount of Si2, B2O3 and Al2O3 of at least 75 mol %. The article is preferably used in the fields of biotechnology, MEMS, CIS, MEMS-like pressure sensor, display, micro array, electronic devices, microfluidics, semiconductor, high precision equipment, camera imaging, display technologies, sensor/semicon, electronic devices, home appliance, diagnostic product, and/or medical device.Type: ApplicationFiled: June 19, 2020Publication date: October 8, 2020Inventors: Huiyan FAN, Junming XUE, Pengxiang QIAN, Matthias JOTZ, Fredrik PRINCE
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Patent number: 10730792Abstract: 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.Type: GrantFiled: March 10, 2017Date of Patent: August 4, 2020Assignee: SCHOTT AGInventors: Clemens Ottermann, Rainer Liebald, Andreas Habeck, Kurt Nattermann, Markus Heiss-Chouquet, Jürgen Vogt, Thomas Wiegel, Andreas Ortner, Ning Da, Feng He, Pengxiang Qian
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Publication number: 20200196785Abstract: A drinking implement includes: a first opening; a lumen; a second opening fluidly coupled to the first opening and the lumen; and a wall including a glass and extending from the first opening to the second opening and surrounding the lumen. The wall has an inner surface facing toward the lumen and an outer surface facing away from the lumen. The wall has a first compressive stress layer extending from the inner surface to a first depth within the wall, a second compressive stress layer extending from the outer surface to a second depth within the wall, and a tensile stress layer disposed within the wall at a depth between the first compressive stress layer and the second compressive stress layer. The second depth is from 0.05% to 25% of a thickness of the wall.Type: ApplicationFiled: December 20, 2019Publication date: June 25, 2020Applicant: SCHOTT Glass Technologies (Suzhou) Co. Ltd.Inventors: Pengxiang Qian, Junming Xue, Fritz Wintersteller, Folker Steden, Takahisa Uchida, Csaba Debreczeny
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Publication number: 20200095163Abstract: A thin glass article is provided that has a first face, a second face, one or more edges joining the first and second faces, and a thickness between the first and second faces, where the faces and the one or more edges together form an outer surface of the thin glass article. The thin glass article has an ion-exchanged surface layer on its outer surface. The ion-exchanged surface layer is non-uniform, wherein the non-uniform ion-exchanged surface layer has an associated compressive surface stress which varies between a minimum and a maximum value over the outer surface and/or a depth of layer which varies between a minimum and a maximum value over the outer surface. A method for producing a thin glass article and a use of a thin glass article are also provided.Type: ApplicationFiled: November 26, 2019Publication date: March 26, 2020Applicant: SCHOTT GLASS TECHNOLOGIES (SUZHOU) CO. LTD.Inventors: Xiaodong LUO, Chong WANG, Pengxiang QIAN, Feng HE, Aiming HUANG, Dengke HOU, Rainer LIEBALD, Jose ZIMMER
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Publication number: 20180339932Abstract: A low CTE boro-aluminosilicate glass having a low brittleness for use in wafer-level-packaging (WLP) applications is disclosed. The glass comprises a composition in mol-% of SiO2: 60-85, Al2O3: 1-17, B2O3: 8-20, Na2O: 0-5, K2O: 0-5, MgO: 0-10, CaO: 0-10, SrO: 0-10, and BaO: 0-10. An average number of non-bridging oxygen per polyhedron (NBO) is equal to or larger than ?0.2 and a ratio B2O3/Al2O3 is equal to or larger than 0.5. The NBO is defined as NBO=2×Omol/(Simol+Almol+Bmol)?4. A glass carrier wafer made from the low CTE boro-aluminosilicate glass and a use thereof as a glass carrier wafer for the processing of a silicon substrate are also disclosed, as well as a method for providing a low CTE boro-aluminosilicate glass.Type: ApplicationFiled: August 1, 2018Publication date: November 29, 2018Applicant: SCHOTT Glass Technologies (Suzhou) Co. Ltd.Inventors: Pengxiang Qian, Yunfei Hou, Junming Xue, Rainer Liebald, Hiroshi Kuroki
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Publication number: 20180009697Abstract: 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.Type: ApplicationFiled: September 20, 2017Publication date: January 11, 2018Applicant: SCHOTT GLASS TECHNOLOGIES (SUZHOU) CO. LTD.Inventors: Feng HE, Ning DA, Pengxiang QIAN
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Publication number: 20180009706Abstract: A thin glass article is provided that has a first face, a second face, one or more edges joining the first and second faces, and a thickness between the first and second faces, where the faces and the one or more edges together form an outer surface of the thin glass article. The thin glass article has an ion-exchanged surface layer on its outer surface. The ion-exchanged surface layer is non-uniform, wherein the non-uniform ion-exchanged surface layer has an associated compressive surface stress which varies between a minimum and a maximum value over the outer surface and/or a depth of layer which varies between a minimum and a maximum value over the outer surface. A method for producing a thin glass article and a use of a thin glass article are also provided.Type: ApplicationFiled: September 20, 2017Publication date: January 11, 2018Applicant: SCHOTT GLASS TECHNOLOGIES (SUZHOU) CO. LTD.Inventors: Xiaodong LUO, Chong WANG, Pengxiang QIAN, Feng HE, Aiming HUANG, Dengke HOU, Rainer LIEBALD, Jose ZIMMER
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Publication number: 20170183259Abstract: 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.Type: ApplicationFiled: March 10, 2017Publication date: June 29, 2017Applicant: SCHOTT Glass Technologies (Suzhou) Co. Ltd.Inventors: Ning DA, Feng HE, Pengxiang QIAN
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Publication number: 20170183258Abstract: 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.Type: ApplicationFiled: March 10, 2017Publication date: June 29, 2017Applicant: SCHOTT AGInventors: Clemens OTTERMANN, Rainer LIEBALD, Andreas HABECK, Kurt NATTERMANN, Markus HEISS-CHOUQUET, Jürgen VOGT, Thomas WIEGEL, Andreas ORTNER, Ning DA, Feng HE, Pengxiang QIAN
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Publication number: 20160114565Abstract: 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.Type: ApplicationFiled: December 21, 2015Publication date: April 28, 2016Applicant: SCHOTT Glass Technologies (Suzhou) Co. Ltd.Inventors: Pengxiang Qian, Chong Wang, Feng He, Yunfei Hou, Rainer Liebald