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Accession Number DE2012-1042651
Title Fully Integrated Applications of Thin Films on Low Temperature Cofired Ceramic (LTCC).
Publication Date Apr 2012
Media Count 3p
Personal Author A. Wolf B. Kuhn K. Peterson M. O'Keefe W. Huebner
Abstract Thin film multilayers have previously been introduced on multilayer low temperature cofired ceramic (LTCC), as well as initial thin film capacitors on LTCC. The ruggedness of a multipurpose Ti-Cu-Pt-Au stack for connectivity and RF conductivity has continued to benefit fabrication and reliability in state of-the-art modules, while the capacitors have followed the traditional Metal-Insulator-Metal (MIM) style. The full integration of thin film passives with thin film connectivity traces is presented. Certain passives, such as capacitors, require specifically tailored and separately patterned thin film (multi-)layers, including a dielectric. Different capacitance values are achieved by variation of both the insulator layer thickness and the active area of the capacitor. Other passives, such as filters, require only the conductor - a single thin film multilayer. This can be patterned from the same connectivity thin film material (Ti-Cu-Pt-Au), or a specially tailored thin film material (e.g. Ti-Cu-Au) can be deposited. Both versions are described, including process and integration details. Examples are discussed, ranging from patterning for maximum tolerances, to space and performance-optimized designs. Cross-sectional issues associated with integration are also highlighted in the discussion.
Keywords Capacitance
Capacitors
Ceramics
Fabrication
Low temperature cofired ceramic (LTCC)
Photovoltaic power supplies
Reliability
Thickness
Thin films

 
Source Agency Technical Information Center Oak Ridge Tennessee
NTIS Subject Category 71D - Ceramics, Refractories, & Glass
97N - Solar Energy
Corporate Author National Nuclear Security Administration, Kansas City, MO. Kansas City Plant.
Document Type Technical report
Title Note N/A
NTIS Issue Number 1226
Contract Number DE-AC04-01AL66850

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