Organic EL display and electronic apparatus
View Patent ↗Disclosed herein is an organic EL display device in which pixels each including an organic EL element formed by interposing an organic layer between an anode electrode and a cathode electrode are arranged in a matrix, the organic EL display device including: a common layer configured to be included in the organic EL element and be formed in the organic layer in common to the pixels; and a metal interconnect configured to surround periphery of the anode electrode and be electrically connected to the organic layer, wherein potential of the metal interconnect is set to a potential lower than potential of the anode electrode in a non-light-emission state of the organic EL element.
1. An organic electroluminescence display device comprising:
a plurality of pixels arranged in a matrix, each of the plurality of pixels including an organic electroluminescence element comprising an organic layer interposed between an anode electrode and a cathode electrode, where the organic layer of the organic electroluminescence element of each of the plurality of pixels comprises one or more constituent-layers;
a driving section configured to selectively drive the plurality of pixels to emit light;
metal interconnects corresponding respectively to the plurality of pixels, each of the metal interconnects being configured so as to encircle an anode region of its corresponding pixel and being directly electrically connected to the organic layer of its corresponding pixel; and
a physically-unitary common layer, portions of which comprise at least one constituent-layer of the organic layer of the organic electroluminescence element of each of the plurality of pixels,
wherein the driving section is configured to apply a first potential to the cathode electrode of each of the plurality of pixels when the respective pixels are driven to emit light and to apply a second potential to each of the metal interconnects, where the second potential is such that the organic electroluminescence element of a given pixel of the plurality of pixels does not emit light when the second potential is applied to the anode electrode of the given pixel while the first potential is applied to the cathode electrode of the given pixel.
2. The organic electroluminescence display device according to claim 1 ,
wherein the organic electroluminescence element of each of the plurality of pixels is configured to emit white light, and
the organic electroluminescence display device includes a color filter that produces light of a plurality of colors from the white light emitted by the plurality of pixels.
3. The organic electroluminescence display device according to claim 2 ,
wherein the organic electroluminescence element of each of the plurality of pixels has a tandem structure, where the tandem structure comprises a plurality of light emitting units that emit non-white light coupled a series manner with a connecting layer between adjacent light emitting units.
4. The organic electroluminescence display device according to claim 3 ,
wherein said at least one constituent-layer of the organic layer of the organic electroluminescence element of each of the plurality of pixels that is part of the physically-unitary common layer is a charge injection layer that injects a charge to a light emitting layer included in the organic layer of the respective pixel.
5. The organic electroluminescence display device according to claim 4 ,
wherein each of the metal interconnects is directly electrically connected to the charge injection layer of its corresponding pixel via a contact hole formed in a window insulating film over which the organic electroluminescence element is provided.
6. The organic electroluminescence display device according to claim 3 ,
wherein said at least one constituent-layer of the organic layer of the organic electroluminescence element of each of the plurality of pixels that is part of the physically-unitary common layer is the connecting layer.
7. The organic electroluminescence display device according to claim 1 ,
wherein each of the metal interconnects is formed at the same layer as a layer of the anode electrode of each of the plurality of pixels.
8. The organic electroluminescence display device according to claim 1 ,
wherein each of the metal interconnects is formed by the same material as a material of the anode electrode of each of the plurality of pixels.
9. The organic electroluminescence display device according to claim 1 ,
wherein the second potential is the same as the first potential.
10. The organic electroluminescence display device according to claim 1 ,
wherein the organic electroluminescence element of each of the plurality of pixels has a masked structure in which at least some of the constituent layers of the respective organic electroluminescence element are physically separated from at least some of the constituent layers of every other organic electroluminescence element, and
said at least one constituent-layer of the organic layer of the organic electroluminescence element of each of the plurality of pixels that is part of the physically-unitary common layer is a charge injection layer that injects a charge to a light emitting layer included in the organic layer of the respective pixel.
11. The organic electroluminescence display device according to claim 1 ,
wherein the metal interconnects are connected one to another so as to form a physically unitary lattice structure.
12. An electronic apparatus having the organic electroluminescence display device of claim 1 .
13. An organic electroluminescence display device comprising:
a plurality of pixels arranged in a matrix, each of the plurality of pixels including an organic electroluminescence element comprising an organic layer interposed between an anode electrode and a cathode electrode, where the organic layer of the organic electroluminescence element of each of the plurality of pixels comprises one or more constituent-layers;
a driving section configured to selectively drive the plurality of pixels to emit light;
a physically-unitary common layer, portions of which comprise at least one constituent-layer of the organic layer of the organic electroluminescence element of each of the plurality of pixels,
metal interconnects corresponding respectively to the plurality of pixels, each of the metal interconnects being configured so as to encircle an anode region of its corresponding pixel and being directly electrically connected to the physically-unitary common layer; and
wherein the driving section is configured to apply a first potential to the cathode electrode of each of the plurality of pixels when the respective pixels are driven to emit light and to apply a second potential to each of the metal interconnects, where the second potential is such that the organic electroluminescence element of a given pixel of the plurality of pixels does not emit light when the second potential is applied to the anode electrode of the given pixel while the first potential is applied to the cathode electrode of the given pixel.