Electroluminescence display device having a desiccant
AssigneeSanyo Electric Co., Ltd.
InventorsTsutomu Yamada, Naoaki Komiya
Life of this patent
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Abstract
Powder desiccant is mixed into a seal which adheres a first substrate to a second substrate, thereby sealing a display region. Almost no moisture permeates through the outer surfaces of the substrates sandwiching the display region, while moisture permeating through the seal is adsorbed by the desiccant. An emissive layer is thereby prevented from deterioration due to moisture. By covering the display region with a resin sealing layer composed of resin having desiccant mixed therein, the display region can reliably be protected from moisture. By forming a groove in the substrate and placing a desiccant therein, moisture can be further reliably adsorbed.
Claims44
An organic electroluminescent display device in which a display region having an organic electroluminescent element is formed between a pair of substrates, wherein
- said organic electroluminescent element comprises a first electrode, a second electrode, and an organic electroluminescent layer formed between said first and second electrodes, said organic electroluminescent layer emitting light when electric current flows between said first and second electrodes, and
- a resin having a desiccant mixed therein is disposed between said pair of substrates, wherein
- said pair of substrates are adhered to one another by a sealing material disposed surrounding at least said display region, so as to seal said display region including said organic electroluminescent element.
An organic electroluminescent display device in which a display region having an organic electroluminescent element is formed between a pair of substrates, wherein
- said organic electroluminescent element comprises a first electrode, a second electrode, and an organic electroluminescent layer formed between said first and second electrodes, said organic electroluminescent layer emitting light when electric current flows between said first and second electrodes, and
- a resin having a desiccant mixed therein is disposed between said pair of substrates, wherein
- said resin is disposed surrounding said display region.
A display device in which a display region having a self-emissive element is formed between a pair of substrates, wherein
- a resin having a desiccant mixed therein is disposed between said pair of substrates, and
- said resin having said desiccant mixed therein is located in a gap between said pair of substrates and covers at least said display region.
A display device in which a display region having a self-emissive element is formed between a pair of substrates, wherein
- said pair of substrates are adhered to one another by a sealing material disposed surrounding at least said display region, so as to seal said display region;
- a groove is formed in at least one of said pair of substrates on a side facing the other substrate in a location where said sealing material is disposed;
- and
- a desiccant is filled in said groove.
A light-emitting device in which an emissive region having a self-emissive element is formed between a pair of substrates, wherein
- said pair of substrates are adhered to one another by a sealing material disposed surrounding at least said emissive region, so as to seal said emissive region;
- a groove is formed in at least one of said pair of substrates on a side facing the other substrate in a location where said sealing material is disposed;
- and
- a desiccant is filled in said groove.
A display device in which a display region having a self-emissive element is formed between a pair of substrates, wherein
- said self-emissive element comprises a first electrode, a second electrode, and an emissive layer formed between said first and second electrodes, and
- a resin having a desiccant mixed therein is disposed between said pair of substrates such that said resin surrounds said self-emissive element comprising said first electrode, said emissive layer, and said second electrode.
Dependencies are inferred from the claim text.