Nonwoven fabric, hygroscopic member, method and apparatus for producing nonwoven fabric and organic electroluminescence display
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United States of America Patent
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-
Oct 10, 2006
Grant Date -
Mar 11, 2004
app pub date -
Aug 27, 2003
filing date -
Aug 28, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An organic electroluminescence display includes a transparent glass substrate, an ITO anode layer, a positive hole transition layer, an RGB luminescence layer, an electron transition layer and a metallic cathode layer. Highly pressurized N.sub.2 gas is sealed in the interior of the display. To absorb and retain the moisture in the sealed gas, a hygroscopic member is disposed between a sealing member and the cathode layer. The hygroscopic member includes a nonwoven fabric including a fiber layer made of fibers bonding to each other and a hygroscopic agent adhering to one surface of the fiber layer and an air-permeable sheet covering the nonwoven fabric as a whole.
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