Emissive element and display device using such element
AssigneeSanyo Electric Co., Ltd.
InventorTsutomu Yamada
Life of this patent
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Abstract
An EL element (60) comprises an anode (61), a cathode (67), and an emissive element layer (66) interposed between the two electrodes. A TFT is connected to the anode (61) at its source electrode (33s). The peripheral portion of the anode (61) and the entire region over the TFT are covered with a planarizing insulating film (17), and a part of the exposed portion of the anode (61) is connected to the emissive element layer (66). According to the above arrangement, it is possible to prevent disconnection of the emissive element layer (66) which may be caused by an uneven surface created by the thickness of the anode (61), and to avoid formation of a short circuit between the anode (61) and the cathode (67).
Claims49
An emissive element comprising a first electrode, an emissive element layer, a second electrode, and an insulating film wherein:
- said insulating film is disposed on at least a peripheral portion of said first electrode for separating said first electrode from said emissive element layer and/or said second electrode, and said insulating film has a planarized surface.
An emissive element, comprising a first electrode, an emissive element layer, and a second electrode, wherein:
- an insulating film is disposed on at least a peripheral portion of said first electrode for separating said first electrode from said emissive element layer and/or said second electrode;
- and
- said first electrode is connected to a thin-film transistor, and said first electrode is located in a layer over said thin-film transistor with an insulating film for interlayer isolation disposed between said first electrode and said thin-film transistor.
An emissive element, comprising a first electrode, an emissive element layer, and a second electrode, wherein:
- an insulating film is disposed on at least a peripheral portion of said first electrode for separating said first electrode from said emissive element layer and/or said second electrode wherein:
- said film possess a light-shielding property and/or a light-absorbing property;
- and
- a thin-film transistor is connected to said first electrode and disposed in a layer below said first electrode;
- and
- in addition to covering a peripheral portion of said first electrode, said insulating film covers a region where said thin-film transistor is formed.
A display device, comprising
- an emissive element comprising a first electrode, an emissive element layer, a second electrode, and an insulating film, wherein:
- said insulating film is disposed on at least a peripheral portion of said first electrode for separating said first electrode from said emissive element layer and/or said second electrode, and said insulating film has a planarized surface.
A display device, comprising an emissive element including a first electrode, an emissive element layer, and a second electrode, wherein:
- an insulating film is disposed on at least a peripheral portion of said first electrode for separating said first electrode from said emissive element layer and/or said second electrode;
- and
- said first electrode is connected to a thin-film transistor;
- and
- said first electrode is located in a layer over said thin-film transistor with an insulating film for interlayer isolation disposed between said first electrode and said thin-film transistor.
A display device, comprising an emissive element including a first electrode, an emissive element layer, and a second electrode, wherein:
- an insulating film is disposed on at least a peripheral portion of said first electrode for separating said first electrode form said emissive element layer and/or said second electrode;
- and
- said insulating film possesses a light-shielding property and/or a light-absorbing property;
- and
- a thin-film transistor is connected to said first electrode and disposed in a layer below said first electrode;
- and
- in addition to covering a peripheral portion of said first electrode, said insulating film disposed between said first electrode and said emissive element layer covers a region where said thin-film transistor is formed.
An emissive element comprising a first electrode, an emissive element layer, a second electrode, an insulating film, and a planarizing insulating film, wherein:
- said insulating film is disposed on at least a peripheral portion of said first electrode for separating said first electrode from said emissive element layer and/or said second electrode;
- and
- said planarizing insulating film is disposed under said first electrode for planarizing an upper surface thereof.
A display device comprising:
- an emissive element including a first electrode, an emissive element layer, a second electrode, an insulating film, and a planarizing insulating film, wherein:
- said insulating film is disposed on at least a peripheral portion of said first electrode for separating said first electrode from said emissive element layer and/or said second electrode;
- and
- said planarizing insulating film is disposed under said first electrode.
The display device defined in claim, 37, wherein:
- said insulating film possesses a light-shielding property and/or a light-absorbing property.
Dependencies are inferred from the claim text.