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EP0215462A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Paste for bonding semi-conductors to ceramic underlayers

Assignee: Evonik Operations GmbH
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Filing: 1986-09-13
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Granted: —
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Expires: 2006-09-13
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Abstract

Abstract Translated from German Zum Verbinden von Halbleitern mit keramischen Unterlagen verwendet man Silber-Glas-Pasten. Eine gute Haftfestigkeit bereits bei Brenntemperaturen von rund 380° C erhält man mit Pasten, deren Glaskomponente aus 75 bis 85 Gew. % Bleioxid, 8 bis 15 Gew. % Boroxid, 0,75 bis 2,5 Gew. % Siliziumoxid, 0 bis 10 Gew. % Zinkoxid, 0 bis 5 Gew. % Wismutoxid, 0 bis 3 Gew. % Aluminiumoxid, 0,5 bis 5,5 Gew. % Kupferoxid und einem nichtflüchtigen Metallfluorid als Rest besteht, wobei das Molverhältnis Kupferoxid zu Fluoridgehalt zwishchen 1 : 0,25 und 1 : 10 liegen muß. Silver-glass pastes are used to connect semiconductors to ceramic substrates. Good adhesive strength is achieved even at firing temperatures of around 380 ° C with pastes whose glass components consist of 75 to 85% by weight of lead oxide, 8 to 15% by weight of boron oxide, 0.75 to 2.5% by weight of silicon oxide, 0 to 10 % By weight zinc oxide, 0 to 5% by weight bismuth oxide, 0 to 3% by weight aluminum oxide, 0.5 to 5.5% by weight copper oxide and a non-volatile metal fluoride as the remainder, the molar ratio of copper oxide to fluoride content being between 1: 0 , 25 and 1:10 must be.

Inventors

  • 👤 Maurice E. Dumesnill
  • 👤 Karl Dr. Starz
  • 👤 Leonid Finkelshteyn

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-07 07:54
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/622; C04B35/626; C04B35/62605; C04B35/62645; C04B35/62655; C03; C03C; C03C8/00; C03C8/24; C03C8/245; C04B35/63; C04B35/632; C04B35/634; C04B35/63404; C04B35/63424; C04B35/636; C04B35/6365; H; H10; H10W; H10W20/00; H10W20/40; C04B2237/00; C04B2237/02; C04B2237/04; C04B2237/06; C04B2237/062; C04B2237/064; C04B2237/12; C04B2237/122; C04B2237/125; C04B2237/126; C04B2237/30; C04B2237/32; C04B2237/34; C04B2237/343; C04B2237/50; C04B2237/70; C04B2237/708; C04B2237/72; H10W72/00; H10W72/071; H10W72/073; H10W72/07331; H10W72/07337; H10W72/30; H10W72/321; H10W72/325; H10W72/351; H10W72/352; H10W90/00; H10W90/701; H10W90/731; H10W90/734

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