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US 8,558,253 B2Granted
Organic EL display device and electronic apparatus
AssigneeSony Corporation
InventorKeisuke Omoto
Life of this patent
Estimating the term…
Abstract
An organic EL display device includes organic EL elements provided for respective pixels. Each organic EL element has first and second electrodes between which an organic layer is provided and has a region that contributes to light emission and a region that does not contribute to light emission. A capacitor is formed between the first and second electrodes in the region that does not contribute to light emission and is used as a capacitance element in a drive circuit for the organic EL element.
Claims20
An organic electroluminescent display device comprising:
- organic electroluminescent elements provided for respective pixels, at least one of the organic electroluminescent elements having first and second electrodes between which an organic layer is provided and having a region that contributes to light emission and a region that does not contribute to light emission,
- wherein a first capacitor is formed between the first and second electrodes in the region that does not contribute to light emission and, the first and second electrodes being configured such that the first capacitor is a capacitance element in a drive circuit for the organic electroluminescent element,
- wherein the drive circuit comprises:
- a write transistor that writes a signal voltage of a video signal to the corresponding pixel;
- a second capacitor that stores at least a portion of the signal voltage written by the write transistor;
- and
- a drive transistor that drives the organic electroluminescent element in accordance with the voltage stored by at least the second capacitor, and
- wherein a first terminal of the first capacitor is connected to the first electrode and a second terminal of the first capacitor is connected to a gate electrode of the drive transistor.
5 more elements
An electronic apparatus comprising:
- an organic electroluminescent display device that includes organic electroluminescent elements provided for respective pixels, at least one of the organic electroluminescent elements having first and second electrodes between which an organic layer is provided and having a region that contributes to light emission and a region that does not contribute to light emission,
- wherein a first capacitor is formed between the first and second electrodes in the region that does not contribute to light emission and, the first and second electrodes being configured such that the first capacitor is a capacitance element in a drive circuit for the organic electroluminescent element
- wherein the drive circuit further comprises:
- a write transistor that writes a signal voltage of a video signal to the corresponding pixel;
- a second capacitor that stores at least a portion of the signal voltage written by the write transistor;
- and
- a drive transistor that drives the organic electroluminescent element in accordance with the voltage stored by at least the second capacitor, and
- wherein a first terminal of the first capacitor is connected to the first electrode and a second terminal of the first capacitor is connected to a gate electrode of the drive transistor.
5 more elements
Dependencies are inferred from the claim text.