公开(公告)号：US10370290B2

公开(公告)日：2019-08-06

申请号：US16075796

申请日：2017-05-03

Applicant: Ferro Corporation

Inventor： Srinivasan Sridharan ,  John J. Maloney ,  George E. Sakoske ,  Gregory R. Prinzbach ,  David Widlewski ,  Jackie Davis ,  Bradford Smith

IPC: H01L21/02 ,  C03C4/16 ,  C03C3/066 ,  C03C8/24 ,  H01L23/29 ,  H01L23/31 ,  C03C3/062 ,  C03C3/108 ,  C03C3/072 ,  C03C8/04 ,  C03C8/10 ,  C03C8/22

Abstract: A passivation glass coating composition is provided for forming a fired passivation glass layer on a semiconductor substrate having p-n junction. The passivation glass coating composition includes a glass component that is lead free, cadmium free, alkali metal oxides free, and colored transition metal oxides (i.e. metal oxides of V, Fe, Co, Ni, Cr, Cu, Mn) free. The glass component includes bismuth based glasses, and provides a firing temperature range of 500° C. to 900° C., and controlled devitrification. Once fired to a semiconductor device, the fired passivation glass layer provides exceptional device performance including no cracking of the fired passivation glass layer, excellent thermal expansion matching to silicon, good chemical resistance to acid and base, and improved device performance.

公开(公告)号：US09776911B2

公开(公告)日：2017-10-03

申请号：US14911035

申请日：2014-10-06

Applicant: Ferro Corporation

Inventor： Srinivasan Sridharan ,  Orville W. Brown ,  George E. Graddy, Jr.

IPC: H01B3/08 ,  C03C3/00 ,  C03C8/16 ,  C09K5/14 ,  H05K1/03 ,  H05K1/05 ,  H05K3/20 ,  C03C3/097 ,  C03C8/08 ,  C03C8/14

CPC classification number: C03C8/16 ,  C03C3/097 ,  C03C8/08 ,  C03C8/14 ,  C03C2204/00 ,  C03C2207/08 ,  C09K5/14 ,  H01B3/087 ,  H05K1/0306 ,  H05K1/05 ,  H05K3/20

Abstract: High thermal conductivity dielectric materials systems or pastes are useful on aluminum alloy substrates for LED and high power circuitry applications.

公开(公告)号：US09565772B2

公开(公告)日：2017-02-07

申请号：US14907590

申请日：2014-07-22

Applicant: Ferro Corporation

Inventor： George E. Sakoske ,  Phil Maitland ,  Dietrich Speer ,  Frank Walter ,  Robert P. Blonski ,  Srinivasan Sridharan

IPC: H05K1/09 ,  H05K1/00 ,  H05K3/10 ,  H05K3/12 ,  H05K1/02 ,  H05K1/03 ,  H05K1/11 ,  H05K3/38

CPC classification number: H05K3/1291 ,  H05K1/0296 ,  H05K1/0306 ,  H05K1/092 ,  H05K1/115 ,  H05K3/282 ,  H05K3/388 ,  H05K3/389 ,  H05K2201/0338 ,  H05K2203/1126

Abstract: The present subject matter provides for a multi-layer conductive trace. The trace can be formed by digital printing the individual layers and firing. The individual layers each impart functional characteristics to the conductive trace and each layer has components that can be adjusted to affect the performance characteristics of that particular layer without detrimentally affecting the performance characteristics of the remaining layers.

Abstract translation: 本主题提供多层导电迹线。 痕迹可以通过数字印刷单独的层和烧制形成。 各个层各自赋予导电迹线功能特征，并且每个层具有可被调整以影响该特定层的性能特征的组分，而不会有害地影响剩余层的性能特征。

公开(公告)号：US20220119315A1

公开(公告)日：2022-04-21

申请号：US17434232

申请日：2021-02-04

Applicant: Ferro Corporation

Inventor： Ellen S. Tormey ,  Peter Marley ,  Chao Ma ,  John Maloney ,  Yi Yang ,  Orville W. Brown ,  Srinivasan Sridharan

IPC: C04B35/20 ,  H01B3/10

Abstract: LTCC devices are produced from dielectric compositions include a mixture of precursor materials that, upon firing, forms a dielectric material having a magnesium-silicon oxide host. An associated Ag system for LTCC conductors is also described.

公开(公告)号：US11174170B2

公开(公告)日：2021-11-16

申请号：US16071629

申请日：2017-01-23

Applicant: Ferro Corporation

Inventor： George E. Sakoske ,  John J. Maloney ,  Cody Gleason ,  Srinivasan Sridharan

IPC: C01G37/00 ,  C03C8/00 ,  C09C1/00 ,  C01G37/14 ,  C09D7/61 ,  C01G45/12 ,  C01G49/00 ,  C03C1/04 ,  C03C8/14 ,  C09C1/34 ,  C09C1/40 ,  C09C3/04

Abstract: Modified copper chromite spinel pigments exhibit lower coefficients of thermal expansion than unmodified structures. Three methods exist to modify the pigments: (1) the incorporation of secondary modifiers into the pigment core composition, (2) control of the pigment firing profile, including both the temperature and the soak time, and (3) control of the pigment core composition.

公开(公告)号：US20180186687A1

公开(公告)日：2018-07-05

申请号：US15740102

申请日：2016-12-02

Applicant: Ferro Corporation

Inventor： Srinivasan Sridharan ,  George E. Sakoske ,  John J. Maloney ,  Cody Gleason ,  Gregory R. Prinzbach ,  Bradford Smith ,  Chih Cheng Wang

IPC: C03C10/00 ,  C03C4/02

CPC classification number: C03C10/0045 ,  C03C3/064 ,  C03C3/066 ,  C03C4/02 ,  C03C8/02 ,  C03C8/04 ,  C03C14/00 ,  C04B33/13 ,  C04B33/14 ,  C04B35/18 ,  C04B2235/36 ,  C04B2235/365 ,  C04B2235/5292

Abstract: A sintered machinable glass-ceramic is provided. The machinable glass-ceramic is formed by mixing phyllosilicate material having a sheet structure, with a glass fit and firing the mixture at relatively low temperatures to sinter the phyllosilicate, while maintaining the sheet-like morphology of the phyllosilicate and its associated cleaving properties. The sintered machinable glass-ceramic can be machined with conventional metal working tools and includes the electrical properties of the phyllosilicate. Producing the sintered machinable glass-ceramic does not require the relatively high-temperature bulk nucleation and crystallization needed to form sheet phyllosilicate phases in situ.

公开(公告)号：US20220234942A1

公开(公告)日：2022-07-28

申请号：US17613545

申请日：2020-07-15

Applicant: Ferro Corporation

Inventor： Enos A. Axtell ,  Anthony Polizzi ,  Srinivasan Sridharan ,  George E. Sakoske

IPC: C03C4/02 ,  C03C8/02 ,  C03C8/04 ,  C03C8/16 ,  C03C3/091 ,  C03C3/093 ,  C03C3/064 ,  C03C3/066 ,  C03C1/04 ,  C03C17/02 ,  C23D5/02

Abstract: Glass frits and enamel compositions from the glass frits for use in automotive application. The enamel composition includes one or more glass frits with reduced amount of bismuth and/or zinc compared to reference enamel compositions available. The glass frits include one or more transition metal oxides. The glass frits exhibit improved chemical durability, reduced glass density, lower L-value, or optimized optical density for an end user depending on the applications.

公开(公告)号：US20220225501A1

公开(公告)日：2022-07-14

申请号：US17272736

申请日：2019-09-06

Applicant: Ferro Corporation

Inventor： Umesh Kumar ,  John J. Maloney ,  Bradford Smith ,  Ponnusamy Palanisamy ,  Srinivasan Sridharan ,  George E. Sakoske, Jr. ,  George E. Graddy, Jr.

IPC: H05K1/09 ,  B33Y80/00 ,  B22F1/00 ,  B22F7/04 ,  B33Y10/00 ,  B22F10/10 ,  B41M1/12 ,  B41M1/34 ,  B41M5/00 ,  C09D5/24 ,  C09D17/00

Abstract: Conductive thick film compositions compatible to aluminum nitride, alumina and silicon nitride substrates for microelectronic circuit application. The conductive thick film composition includes first copper powder, second copper powder, and glass component. The conductive thick film composition further includes CU2O, Ag, and at least one metal element selected from Ti, V, Zr, Mn, Cr, Co, and Sn. After firing, the conductive thick film composition exhibit improved sheet resistivity, and improved adhesion with underlying substrate.

公开(公告)号：US20210198119A1

公开(公告)日：2021-07-01

申请号：US16071629

申请日：2017-01-23

Applicant: Ferro Corporation

Inventor： George E. Sakoske ,  John J. Maloney ,  Cody Gleason ,  Srinivasan Sridharan

IPC: C01G45/12 ,  C01G49/00 ,  C09C1/34 ,  C09C1/40 ,  C09C3/04 ,  C03C8/14 ,  C03C1/04

Abstract: Modified copper chromite spinel pigments exhibit lower coefficients of thermal expansion than unmodified structures. Three methods exist to modify the pigments: (1) the incorporation of secondary modifiers into the pigment core composition, (2) control of the pigment firing profile, including both the temperature and the soak time, and (3) control of the pigment core composition.

公开(公告)号：US20190135683A1

公开(公告)日：2019-05-09

申请号：US16180096

申请日：2018-11-05

Applicant: Ferro Corporation

Inventor： Cody J. Gleason ,  John J. Maloney ,  Srinivasan Sridharan ,  George E. Sakoske ,  Peter Marley ,  Mohammed H. Megherhi ,  Yie-Shein Her ,  Orville W. Brown ,  Jackie D. Davis ,  Thomas J. Coffey ,  Ellen S. Tormey ,  Stanley Wang ,  David L. Widlewski

IPC: C03C10/00 ,  C03C4/16

Abstract: A low K value, high Q value, low firing dielectric material and method of forming a fired dielectric material. The dielectric material can be fired below 950° C. or below 1100° C., has a K value of less than about 8 at 10-30 GHz and a Q value of greater than 500 or greater than 1000 at 10-30 GHz. The dielectric material includes, before firing a solids portion including 10-95 wt % or 10-99 wt % silica powder and 5-90 wt % or 1-90 wt % glass component. The glass component includes 50-90 mole % SiO2, 5-35 mole % or 0.1-35 mole % B2O3, 0.1-10 mole % or 0.1-25 mole % Al2O3, 0.1-10 mole % K2O, 0.1-10 mole % Na2O, 0.1-20 mole % Li2O, 0.1-30 mole % F. The total amount of Li2O+Na2O+K2O is 0.1-30 mole % of the glass component. The silica powder can be amorphous or crystalline.