Invention Grant
- Patent Title: Thick film conductor case compositions for LTCC tape
- Patent Title (中): LTCC胶带厚膜导体盒组合物
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Application No.: US11873866Application Date: 2007-10-17
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Publication No.: US07731812B2Publication Date: 2010-06-08
- Inventor: Yueli Wang , Christopher R. Needes , Patricia J. Ollivier
- Applicant: Yueli Wang , Christopher R. Needes , Patricia J. Ollivier
- Applicant Address: US DE Wilmington
- Assignee: E.I. du Pont de Nemours and Company
- Current Assignee: E.I. du Pont de Nemours and Company
- Current Assignee Address: US DE Wilmington
- Main IPC: C03B29/00
- IPC: C03B29/00 ; H01B1/02 ; H01B1/22 ; B32B15/00 ; B32B17/00 ; H05K1/09

Abstract:
Methods of forming a multilayer circuit comprising: a) forming a patterned array of vias in a plurality of layers of green tape; b) filling the vias in one or more of the green tape layers from (a); c) printing over at least one surface of the green tape layers from step (b) with at least one patterned layer of a thick film composition consisting essentially of: i) electrically conductive powder; ii) an inorganic binder wherein the inorganic binder is selected from TiO2 and any compounds that can generate TiO2 during firing and any one of the following compounds: Sb2O3, Co3O4, PbO, Fe2O3, SnO2, MnO, CuO and mixtures thereof; and iii) an organic medium, wherein the total inorganic binder is in the range of 0.6 wt. % to about 2 wt. % of the total composition. d) laminating the printed green tape layers from step (d) to form an assemblage comprising a plurality of unfired interconnected functional layers separated by unfired green tape; and e) cofiring the assemblage from step (d).
Public/Granted literature
- US20080029202A1 THICK FILM CONDUCTOR CASE COMPOSITIONS FOR LTCC TAPE Public/Granted day:2008-02-07
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