Method and Apparatus for Producing Controlled Stresses and Stress Gradients in Sputtered Films

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United States of America Patent

APP PUB NO 20130186746A1
SERIAL NO

13785588

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An enhanced sputtered film processing system and associated method comprises one or more sputter deposition sources each having a sputtering target surface and one or more side shields extending therefrom, to increase the relative collimation of the sputter deposited material, such as about the periphery of the sputtering target surface, toward workpiece substrates. One or more substrates are provided, wherein the substrates have a front surface and an opposing back surface, and may have one or more previously applied layers, such as an adhesion or release layer. The substrates and the deposition targets are controllably moved with respect to each other. The relatively collimated portion of the material sputtered from the sputtering target surface travels beyond the side shields and is deposited on the front surface of the substrates. The increase in relative collimation results in deposited films with desirable properties including but not limited to high levels of both readily controllable compressive stress and mechanical integrity without the use of ion bombardment.

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ADVANTEST (SINGAPORE) PTE LTD1YISHUN AVENUE 7 SINGAPORE 768923

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chong, Fu Chiung Saratoga, US 32 1471
Giauque, Pierre H San Francisco, US 2 0
Smith, Donald Bolinas, US 57 926
Swiatowiec, Frank San Jose, US 5 166

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