Nonwoven fabric, hygroscopic member, method and apparatus for producing nonwoven fabric and organic electroluminescence display
AssigneesYamaichi Electronics Co., Ltd., Matty Co., Ltd.
InventorMasato Jimbo
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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 N2 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.
Claims6
A method for producing a nonwoven fabric by bonding fibers to each other, comprising the steps of:
- supplying raw material of said fibers to a first centrifugal separator;
- ejecting fibers from said first centrifugal separator by a centrifugal force;
- and
- supplying a hygroscopic agent onto said fibers ejected from said first centrifugal separator so that said hygroscopic agent adheres to at least part of said fibers, wherein the hygroscopic agent comprises a calcium oxide and porous particles of silicon dioxide adhering to the periphery of said calcium oxide.
A method for producing a nonwoven fabric by bonding fibers to each other, comprising the steps of:
- (a) supplying raw material of fibers to a centrifugal separator;
- (b) ejecting fibers from said centrifugal separator by a centrifugal force and forming a fiber layer by bonding said ejected fibers to each other;
- and
- (c) adhering a hygroscopic agent to said fiber layer, wherein the hygroscopic agent comprises a calcium oxide and porous particles of silicon dioxide adhering to the periphery of said calcium oxide.
Dependencies are inferred from the claim text.