Organic light-emitting display with vertically stacked capacitor and capacitive feedback
First Claim
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1. An organic light-emitting display device comprising:
- a plurality of scanning lines; and
a plurality of pixels,each pixel of the plurality of pixels comprises;
a first electrode formed from a same layer and in a same plane as the scanning lines, and the first electrode is formed of a same material as the scanning lines;
a plurality of insulating layers sequentially disposed on the first electrode, a contact hole is formed through the plurality of insulating layers to expose a part of a surface of the first electrode;
an organic light-emitting diode (OLED), which includesa pixel electrode disposed on the plurality of insulating layers,a second electrode facing the pixel electrode and contacting the first electrode through the contact hole, andan organic emissive layer disposed between the pixel electrode and the second electrode; and
a driving circuit, which includesa first thin-film transistor (TFT) includinga gate electrode disposed on one of the scanning lines,an active layer on the gate electrode, andsource and drain electrodes which contact source and drain areas, respectively, of the active layer;
a second TFT; and
a capacitor includinga first capacitor electrode disposed on a same layer as the scanning lines,a second capacitor electrode disposed on a same layer as the gate electrode of the second TFT, anda third capacitor electrode disposed on a same layer as the source and drain electrodes of the second TFT.
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Abstract
An organic light-emitting display device includes a first electrode disposed on a substrate; a plurality of insulating layers which are sequentially disposed on the first electrode, and on which a contact hole for exposing a part of a surface of the first electrode is formed; and an organic light-emitting diode which includes a pixel electrode disposed on the plurality of insulating layers, a second electrode facing the pixel electrode and contacting the first electrode through the contact hole, and an organic emissive layer disposed between the pixel electrode and the second electrode.
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Citations
14 Claims
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1. An organic light-emitting display device comprising:
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a plurality of scanning lines; and a plurality of pixels, each pixel of the plurality of pixels comprises; a first electrode formed from a same layer and in a same plane as the scanning lines, and the first electrode is formed of a same material as the scanning lines; a plurality of insulating layers sequentially disposed on the first electrode, a contact hole is formed through the plurality of insulating layers to expose a part of a surface of the first electrode; an organic light-emitting diode (OLED), which includes a pixel electrode disposed on the plurality of insulating layers, a second electrode facing the pixel electrode and contacting the first electrode through the contact hole, and an organic emissive layer disposed between the pixel electrode and the second electrode; and a driving circuit, which includes a first thin-film transistor (TFT) including a gate electrode disposed on one of the scanning lines, an active layer on the gate electrode, and source and drain electrodes which contact source and drain areas, respectively, of the active layer; a second TFT; and a capacitor including a first capacitor electrode disposed on a same layer as the scanning lines, a second capacitor electrode disposed on a same layer as the gate electrode of the second TFT, and a third capacitor electrode disposed on a same layer as the source and drain electrodes of the second TFT. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An organic light-emitting display device, comprising:
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a scanning line; a first electrode formed from a same layer and in a same plane as the scanning line; a driving circuit; an OLED including a pixel electrode, an organic emissive layer, a second electrode; and a plurality of insulating layers sequentially disposed on the first electrode, wherein a second electrode is disposed on an uppermost insulating layer among the plurality of insulating layers, and contacts the first electrode through a contact hole formed through the plurality of insulating layers, and the driving circuit comprises; a first thin-film transistor (TFT) which includes a gate electrode disposed on the scanning line, an active layer on the gate electrode, and source and drain electrodes which contact source and drain areas, respectively, of the active layer, a second TFT, and a capacitor which includes a first capacitor electrode formed of a same layer as the scanning lines, a second capacitor electrode formed of a same layer as a gate electrode of the second TFT, and a third capacitor electrode formed of a same layer as source and drain electrodes of the second TFT. - View Dependent Claims (10, 11, 12, 13, 14)
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Specification
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Current AssigneeSamsung Display Company Limited (Samsung Electronics Co. Ltd.)
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Original AssigneeSamsung Display Company Limited (Samsung Electronics Co. Ltd.)
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InventorsIm, Ki-Ju, Choi, Chaun-Gi
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Primary Examiner(s)Smoot, Stephen W
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Assistant Examiner(s)IVANOV, PAVEL G
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Application NumberUS14/026,828Publication NumberTime in Patent Office802 DaysField of Search257/40, 257/E27.131, 438/34US Class Current1/1CPC Class CodesH10K 2102/3026 Top emissionH10K 50/824 combined with auxiliary ele...H10K 59/1213 the pixel elements being TFTsH10K 59/1216 the pixel elements being ca...H10K 59/1315 comprising structures speci...H10K 59/80522 combined with auxiliary ele...
