US2020161054A1PendingUtilityA1

Glass dielectric capacitors and manufacturing processes for glass dielectric capacitors

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Assignee: GENERAL ATOMICSPriority: Dec 21, 2017Filed: Jan 22, 2020Published: May 21, 2020
Est. expiryDec 21, 2037(~11.4 yrs left)· nominal 20-yr term from priority
Inventors:James Ross MacdonaldEsteban Balarezo BagdyMark Aoraha CacauseMark A. Schneider
B32B 38/0008H01J 37/32B32B 2309/105H01G 4/30H01G 13/006H01G 4/105B32B 37/12H01G 4/232H01G 4/01B32B 17/06B32B 2457/16B32B 2255/26B32B 2307/202H01J 2237/335
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Claims

Abstract

A method for making a glass dielectric capacitor may include providing a plurality of foil sheets, cutting each of the plurality of foil sheets with a laser beam by melting each of the plurality of foil sheets, forming a respective smooth foil edge on each of said plurality of foil sheets during the cutting, providing a plurality of glass sheets, and stacking the plurality of foil sheets in alternating layers with the plurality of glass sheets.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A system for making glass dielectric capacitors, wherein the system includes mechanical components configured to:
 provide a plurality of foil sheets of 4 micrometers to 25 micrometers thickness;   cut each of the plurality of foil sheets with a laser beam by melting each of the plurality of foil sheets;   form a respective smooth foil edge on each of said plurality of foil sheets during the cutting;   provide a plurality of glass sheets; and   stack the plurality of foil sheets in alternating layers with the plurality of glass sheets.   
     
     
         2 . The system of  claim 1 , wherein:
 said stacking comprises stacking two or more of said plurality of foil sheets between alternating layers of the plurality of glass sheets.   
     
     
         3 . The system of  claim 1 , wherein the system is further configured to:
 deposit a metalized layer on both sides of each one of the plurality of glass sheets prior to said stacking of said plurality of foil sheets in alternating layers with said plurality of glass sheets.   
     
     
         4 . The system of  claim 3 , wherein:
 said depositing of said metalized layer comprises depositing said metalized layer on an area of each of said plurality of glass sheets that extends beyond an area of each of said plurality of glass sheets juxtaposed respectively to one of said plurality of foil sheets.   
     
     
         5 . The system of  claim 4 , wherein:
 said stacking comprises stacking said plurality of foil sheets in alternating layers with the plurality of glass sheets with said plurality of foil sheets extending out beyond a respective edge of each of said plurality of glass sheets, wherein an extended portion of each of said plurality of foil sheets allows for attachment of a terminal.   
     
     
         6 . The system of  claim 1 , wherein:
 said stacking comprises stacking said plurality of foil sheets in alternating layers with said plurality of glass sheets with said plurality of glass sheets offset from one another.   
     
     
         7 . The system of  claim 6 , wherein the system is further configured to:
 deposit metal on a side of the plurality of glass sheets having been stacked.   
     
     
         8 . The system of  claim 6 , wherein the system is further configured to:
 deposit electrically conductive epoxy on a side of the plurality of glass sheets having been stacked.   
     
     
         9 . The system of  claim 6 , wherein the system is further configured to:
 deposit a conductive layer on a side of the plurality of glass sheets having been stacked.   
     
     
         10 . The system of  claim 9 , wherein the system is further configured to:
 couple a terminal to said conductive layer.   
     
     
         11 . The system of  claim 10 , wherein the system is further configured to:
 submerge the glass sheets having been stacked in an electrical insulating liquid.   
     
     
         12 . The system of  claim 11 , wherein:
 said submerging comprises submerging under vacuum.   
     
     
         13 . The system of  claim 11 , wherein:
 said submerging comprises submerging said glass sheets having been stacked in a liquid selected from the group of liquids comprising: silicone fluid, mineral oil, synthetic ester, vegetable oil, rapeseed oil, aromatic insulating fluid (such as biphenyls) and combinations thereof.   
     
     
         14 . The system of  claim 1 , wherein the system is further configured to:
 apply a voltage across separate ones of said plurality of foil sheets.   
     
     
         15 . The system of  claim 14 , wherein the system is further configured to:
 apply said voltage across said separate ones of said plurality of foil sheets by pulsing said voltage.   
     
     
         16 . The system of  claim 14 , wherein the system is further configured to:
 apply said voltage under vacuum.   
     
     
         17 . The system of  claim 1 , wherein the system is further configured to:
 coat each of said plurality of glass sheets with polymer coating prior to said stacking.   
     
     
         18 . The system of  claim 1 , wherein the system is further configured to:
 coat each of said plurality of glass sheets with inorganic ceramic coating prior to said stacking.   
     
     
         19 . The system of  claim 1 , wherein the system is further configured to:
 plasma cleaning the plurality of glass sheets and the plurality of foil sheets having been stacked.   
     
     
         20 . The system of  claim 1 , wherein the system is further configured to:
 place into a vacuum furnace the plurality of glass sheets and the plurality of foil sheets having been stacked.   
     
     
         21 . The system of  claim 1 , wherein the system is further configured to:
 clean the plurality of glass sheets prior to said stacking.   
     
     
         22 . The system of  claim 1 , wherein the system is further configured to:
 clean the plurality of foil sheets prior to said stacking.   
     
     
         23 . An apparatus for making glass dielectric capacitors, comprising:
 means for providing a plurality of foil sheets of 4 micrometers to 25 micrometers thickness;   means for cutting each of the plurality of foil sheets with a laser beam by melting each of the plurality of foil sheets;   means for forming a respective smooth foil edge on each of said plurality of foil sheets during the cutting;   means for providing a plurality of glass sheets; and   means for stacking the plurality of foil sheets in alternating layers with the plurality of glass sheets.   
     
     
         24 . The apparatus of  claim 23 , wherein:
 said stacking comprises stacking two or more of said plurality of foil sheets between alternating layers of the plurality of glass sheets.   
     
     
         25 . The apparatus of  claim 23 , further comprising:
 means for depositing a metalized layer on both sides of each one of the plurality of glass sheets prior to said stacking of said plurality of foil sheets in alternating layers with said plurality of glass sheets.   
     
     
         26 . The apparatus of  claim 25 , wherein:
 said depositing of said metalized layer comprises depositing said metalized layer on an area of each of said plurality of glass sheets that extends beyond an area of each of said plurality of glass sheets juxtaposed respectively to one of said plurality of foil sheets.   
     
     
         27 . The apparatus of  claim 26 , wherein:
 said stacking comprises stacking said plurality of foil sheets in alternating layers with the plurality of glass sheets with said plurality of foil sheets extending out beyond a respective edge of each of said plurality of glass sheets, wherein an extended portion of each of said plurality of foil sheets allows for attachment of a terminal.   
     
     
         28 . The apparatus of  claim 23 , wherein:
 said stacking comprises stacking said plurality of foil sheets in alternating layers with said plurality of glass sheets with said plurality of glass sheets offset from one another.   
     
     
         29 . The apparatus of  claim 28 , further comprising:
 means for depositing metal on a side of the plurality of glass sheets having been stacked.   
     
     
         30 . The apparatus of  claim 28 , further comprising:
 means for depositing electrically conductive epoxy on a side of the plurality of glass sheets having been stacked.   
     
     
         31 . The apparatus of  claim 28 , further comprising:
 means for depositing a conductive layer on a side of the plurality of glass sheets having been stacked.   
     
     
         32 . The apparatus of  claim 31 , further comprising:
 means for coupling a terminal to said conductive layer.   
     
     
         33 . The apparatus of  claim 32 , further comprising:
 means for submerging the glass sheets having been stacked in an electrical insulating liquid.   
     
     
         34 . The apparatus of  claim 33 , wherein:
 said submerging comprises submerging under vacuum.   
     
     
         35 . The apparatus of  claim 33 , wherein:
 said submerging comprises submerging said glass sheets having been stacked in a liquid selected from the group of liquids comprising: silicone fluid, mineral oil, synthetic ester, vegetable oil, rapeseed oil, aromatic insulating fluid (such as biphenyls) and combinations thereof.   
     
     
         36 . The apparatus of  claim 23 , further comprising:
 means for applying a voltage across separate ones of said plurality of foil sheets.   
     
     
         37 . The apparatus of  claim 36 , further comprising:
 means for applying said voltage across said separate ones of said plurality of foil sheets by pulsing said voltage.   
     
     
         38 . The apparatus of  claim 36 , further comprising:
 means for applying said voltage under vacuum.   
     
     
         39 . The apparatus of  claim 23 , further comprising:
 means for coating each of said plurality of glass sheets with polymer coating prior to said stacking.   
     
     
         40 . The apparatus of  claim 23 , further comprising:
 means for coating each of said plurality of glass sheets with inorganic ceramic coating prior to said stacking.   
     
     
         41 . The apparatus of  claim 23 , further comprising:
 means for plasma cleaning the plurality of glass sheets and the plurality of foil sheets having been stacked.   
     
     
         42 . The apparatus of  claim 23 , further comprising:
 means for placing into a vacuum furnace the plurality of glass sheets and the plurality of foil sheets having been stacked.   
     
     
         43 . The apparatus of  claim 23 , further comprising:
 means for cleaning the plurality of glass sheets prior to said stacking.   
     
     
         44 . The apparatus of  claim 23 , further comprising:
 means for cleaning the plurality of foil sheets prior to said stacking.

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