Organic electroluminescent element, panel and apparatus using the same
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsTakahiro Komatsu, Akira Gyotoku, Takafumi Hamano, Shinichiro Kaneko
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Abstract
An organic electroluminescent (OEL) element includes a scanning electrode and a signal electrode, which crosses the scanning electrode at right angles, on a substrate. The signal electrodes are formed of N-layer electrodes laminated like steps, where respective layers are insulated from each other. The scanning electrodes are formed on the signal electrodes via an organic thin film layer. As a result, a display area is divided into sections corresponding to laminated numbers, and the divided each section is scanned independently. A duty ratio for driving the OEL element becomes large and less power consumption thus can be expected.
Claims18
An organic electroluminescent (OEL) element comprising:
- (a) a signal electrode;
- (b) a scanning electrode;
- and
- (c) an organic thin film disposed between said signal electrode and said scanning electrode;
- said signal electrode, said organic thin film and said scanning electrode disposed on a substrate,
- wherein said signal electrodes are formed of N-layer electrodes laminated, the layers being insulated from each other,
- wherein a layer M electrode is formed on a layer (M−1) electrode via the insulator, an area of layer M electrode being smaller than an area of layer (M−1) electrode,
- wherein M is an integer not more than integer N and greater than 1.
An organic electroluminescence (OEL) apparatus comprising:
- (A) an OEL element including;
- (a) a signal electrode;
- (b) a scanning electrode;
- (c) an organic thin film disposed between said signal electrode and said scanning electrode;
- said signal electrode, said organic thin film and said scanning electrode disposed on a substrate,
- wherein said signal electrodes (c) are formed of N-layer electrodes laminated, the layers being insulated from each other,
- wherein a layer M electrode is formed on layer (M−1) electrode via the insulator, an area of layer M electrode being smaller than an area of layer (M−1) electrode,
- wherein M is an integer not more than integer N and greater than 1.
- wherein said scanning electrode (a) and said organic thin film (b) are formed on layer N electrode and on layer (M−1) electrode not covered with layer M electrode, and
- (B) driving means for driving said OEL element.
Dependencies are inferred from the claim text.