Jackie L Davis

US Patent:

20120174974, Jul 12, 2012

Filed:

Dec 30, 2011

Appl. No.:

13/340840

Inventors:

Chandrashekhar S. Khadilkar - Broadview Heights OH, US
Srinivasan Sridharan - Strongsville OH, US
Nazarali Merchant - San Diego CA, US
Jackie Davis - Cleveland OH, US
Aziz S. Shaikh - San Diego CA, US
Hong Jiang - Irvine CA, US

Assignee:

FERRO CORPORATION - Mayfield Heights OH

International Classification:

H01L 31/0224
H01L 31/18

US Classification:

136256, 438 57, 257E31119

Abstract:

Solar cell contacts having good electrical performance are made by a process involving: (a) providing a silicon wafer substrate; (b) providing a paste comprising: (i) aluminum, (ii) glass frit, and (iii) a separate and distinct amount of at least one oxide, such that, together with the aluminum, the glass frit and oxide forms a paste having an exothermic reaction peak, at a temperature of at least 660 C. to less than 900 C., (c) applying the paste to the silicon wafer substrate to form a coated substrate, and (d) firing the coated substrate for a time and at a temperature sufficient to sinter the aluminum and fuse the glass frit and oxide.

US Patent:

20130164466, Jun 27, 2013

Filed:

Jul 22, 2011

Appl. No.:

13/808422

Inventors:

Chandrashekhar S. Khadilkar - Broadview Heights OH, US
Robert P. Blonski - North Royalton OH, US
Srinivasan Sridharan - Strongsville OH, US
Jackie D. Davis - Cleveland OH, US
John J. Maloney - Solon OH, US
James D. Walker - Chagrin Falls OH, US

Assignee:

FERRO CORPORATION - Mayfield Heights OH

International Classification:

B32B 37/12
B05D 3/00

US Classification:

428 345, 427384, 156326, 427386, 427560, 427558, 427553, 427559, 427554, 427547, 4272556, 42725528, 4273855, 427544, 205162

Abstract:

A glass-flake loaded organic sealant system is useful for sealing active layers such as those in electronic devices and solar cells.

US Patent:

20200388730, Dec 10, 2020

Filed:

Jun 3, 2020

Appl. No.:

16/891527

Inventors:

- Mayfield Heights OH, US
Srinivasan Sridharan - Strongsville OH, US
George E. Sakoske - Independence OH, US
Ellen S. Tomey - Princeton Junction NJ, US
Chao Ma - Collegeville PA, US
Jackie D. Davis - Cleveland OH, US
Yi Yang - Fort Washington PA, US
Stanley Wang - Taipei City, TW

International Classification:

H01L 33/50

Abstract:

A phosphor in glass (PiG) cover is provided to modulate the color emitted from an LED chip. The PiG cover includes an active layer including glass and phosphor, and a secondary layer including glass and free of phosphor. The active layer is stacked on the secondary layer to form the PiG cover. Alternately the PiG includes an active layer sandwiched between two secondary layers. Two or more active layers can be stacked to each other or disposed side-by-side. An LED chip is arranged under the PiG cover to form an LED package.

US Patent:

20190055155, Feb 21, 2019

Filed:

May 3, 2017

Appl. No.:

16/075796

Inventors:

- Mayfield Heights OH, US
John J. Maloney - Solon OH, US
George E. Sakoske - Independence OH, US
Gregory R. Prinzbach - Brecksville OH, US
David Widlewski - Parma Heights OH, US
Jackie Davis - Cleveland OH, US
Bradford Smith - North Ridgeville OH, US

International Classification:

C03C 4/16
C03C 3/066
C03C 3/072
C03C 3/108
C03C 8/22
C03C 8/04
C03C 8/10
H01L 23/29
H01L 23/31

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.

US Patent:

20180186120, Jul 5, 2018

Filed:

Feb 26, 2018

Appl. No.:

15/904524

Inventors:

- Mayfield Heights OH, US
Chandrashekhar S. Khadilkar - Broadview Heights OH, US
Srinivasan Sridharan - Strongsville OH, US
George E. Sakoske - Independence OH, US
Jackie Davis - Cleveland OH, US

International Classification:

B32B 7/04
C03C 27/10
C03C 27/08
B23K 35/02
B23K 35/365
B32B 37/12
B23K 35/22
C03C 27/04
B23K 35/36

Abstract:

The present invention describes a new method for creating hybrid edge seals using metal, alloy, powder coated metal and other conductive surfaces in between two substrates. The methods utilize various materials, seal designs, and geometries of hybrid seals based on polymeric powder coatings and glass powder coatings.

US Patent:

20160225966, Aug 4, 2016

Filed:

Jan 27, 2016

Appl. No.:

15/007364

Inventors:

- Mayfield Heights OH, US
Srinivasan Sridharan - Strongsville OH, US
Jackie D. Davis - Cleveland OH, US
Gregory R. Prinzbach - Brecksville OH, US
George E. Sakoske - Independence OH, US

International Classification:

H01L 33/58
H01L 33/50

Abstract:

The glass composites include glass frit, that when sintered produce a phosphor-containing layer, suitable for use in optical applications. The glass composites can include a crystallizing glass frit, such that phosphor crystals precipitate from the frit composite during sintering, or can include a non-crystallizing glass composition, such that phosphor is added to the frit composite before sintering. The sintering temperatures of the glass are relatively low so that fluorescence of the phosphors will not substantially degrade during sintering. The resulting phosphor-containing layer can be used in various optical applications including those for converting blue light into various color temperatures of white light.