Organic Rectifier

• US 20080225564A1
• Filed: 12/20/2005
• Published: 09/18/2008
• Est. Priority Date: 12/23/2004
• Status: Active Grant

• Current Assignee: PolyIC GmbH & Co. KG (Leonhard KURZ Stiftung & Company KG)
• Original Assignee: PolyIC GmbH & Co. KG (Leonhard KURZ Stiftung & Company KG)
• Inventors: Ullmann, Andreas, Zipperer, Dietmar, Lorenz, Markus, Bohm, Markus
• Granted Patent: US 7,724,550 B2
• Time in Patent Office: Days
• US Class Current: 363/126
• CPC Class Codes: H02M 3/07 using capacitors charged and discharged alternately by semiconductor devices with control electrode , e.g. charge pumps

Abstract

The invention relates to an electronic device (5) in the form of a flexible multilayer film body, in particular an RFID transponder, and to a rectifier (52) for such an electronic device. The rectifier (52) has at least two organic diodes or organic field effect transistors each having at least one electrical functional layer composed of a semiconducting organic material. The rectifier (52) furthermore has two or more charging or charge-reversal capacitors which are connected up to the two or more organic diodes or organic field effect transistors in such a way that the charging or charge-reversal capacitors can be charged via different current paths.

Claims

1. A rectifier (1, 2, 3, 4, 6) for converting an AC voltage present between two input terminals (E11, E12;

E21, E22;

E31, E32;

E41, E42;

E61, E62) of the rectifier into a DC voltage, in particular a rectifier for an RFID transponder 5, the rectifier having at least two organic diodes (OD1, OD2) and/or organic field effect transistors (OF1, OF2, OF3, OF4) each having at least one electrical functional layer composed of a semiconducting organic material, characterized

in that the rectifier furthermore has two or more charging or charge-reversal capacitors (C1, C2, CS1, C32, CU) which are connected up to the two or more organic diodes and/or organic field effect transistors in such a way that the charging or charge-reversal capacitors can be charged via different current paths.

2. The rectifier (1) as claimed in claim 1, characterized

in that a first charging capacitor (C1) and a first organic diode (OD1) are arranged in a first conducting line branch, in that a second charging capacitor (C2) and a second organic diode (OD2) are arranged in a second conducting line branch, in that the first and the second conducting line branch are coupled in a parallel arrangement to the input (E1) of the rectifier (1), and in that the first and the second organic diode (OD1, OD2) are connected up in a back-to-back arrangement of the respective anode and cathode in the first and the second conducting line branch.

3. The rectifier (2, 3, 4, 6) as claimed in claim 1, characterized

in that a first organic diode (OD1) and a second organic diode (OD2) are connected in a back-to-back arrangement of the respective anode and cathode via a charge-reversal capacitor (C1) to the first input terminal (E21, E31, E41, E61) of the rectifier, in that the first organic diode (OD1) is connected to the second input terminal (E22, E32, E42, E62) of the rectifier and the second organic diode (OD2) is connected via a charging capacitor (C2) to the second input terminal (E22, E32, E42, E62) of the rectifier.

4. The rectifier (2) as claimed in claim 3, characterized

in that the cathode of the first organic diode (OD1) and the anode of the second organic diode (OD2) are connected via the charge-reversal capacitor (C1) to the first input terminal (C21), in that the anode of the first organic diode (OD1) and the cathode of the second organic diode (OD2) are connected to one another via the charging capacitor (C2), and in that the anode of the first organic diode (OD1) is connected to the second input terminal (E22).

5. The rectifier (3) as claimed in claim 3, characterized

in that the anode of the first organic diode (OD1) and the cathode of the second organic diode (OD2) are connected via the charge-reversal capacitor (C1) to the first input terminal (E21), in that the cathode of the first organic diode (OD1) and the anode of the second organic diode (OD2) are connected to one another via the charging capacitor (C2), and in that the anode of the first organic diode (OD1) is connected to the second input terminal (E32).

6. The rectifier (4, 5) as claimed in claim 1, characterized

in that the rectifier is constructed from two or more stages (S41, S42, S64, S63, S61, S62) which are connected up to one another and which have in each case two charging or charge-reversal capacitors and two organic diodes which are connected up in such a way that the charging or charge-reversal capacitors can be charged via different current paths, and which have in each case two input terminals (E41, E42, E43, E44;

E61 to E66) and two coupling terminals (B41, B42, B43, B44;

B61 to B68) for coupling input terminals of a further stage.

7. The rectifier (4, 6) as claimed in claim 6, characterized

in that, in a first stage (S41, S42;

S61, S62), the cathode of the first organic diode and the anode of the second organic diode are connected to the first coupling terminal (B41, B43;

B61, B63) of the first stage and via the charge-reversal capacitor to the first input terminal (E41, E43;

E61, E63) of the first stage, in that the anode of the first organic diode and the cathode of the second organic diode are connected to one another via the charging capacitor, and in that the anode of the first organic diode is connected to the second input terminal (E42, E44;

E62, E64) of the first stage and the cathode of the second organic diode is connected to the second coupling terminal (B42, B44;

B62, B64) of the first stage.

8. The rectifier (4) as claimed in claim 7, characterized

in that the rectifier has two or more first stages (S41, S42), the first and the second input terminal (E41, E42) of the foremost first stage (S41) forming the first and respectively the second input terminal of the rectifier (4), the first and the second coupling terminal (B41, B42) of the respective first stage (S41) being connected to the first and respectively second input terminal (E43, E44) of the downstream first stage, provided that the respective first stage does not form the last stage of the rectifier, and the output (A4) of the rectifier being formed by the second input terminal (E42) of the foremost first stage and by the second coupling terminal (B44) of the last first stage (S42).

9. The rectifier (6) as claimed in claim 6, characterized

in that, in a second stage (S63, S564), the anode of the first organic diode and the cathode of the second organic diode are connected to the first coupling terminal (B65, B67) of the second stage and via the charge-reversal capacitor to the first input terminal (E61, E65) of the second stage, in that the cathode of the first organic diode and the anode of the second organic diode are connected to one another via the charging capacitor, and in that the cathode of the first organic diode is connected to the second input terminal (E62, E66) of the second stage and the anode of the second organic diode is connected to the second coupling terminal (B66, B68) of the second stage.

10. The rectifier as claimed in claim 9, characterized

in that the rectifier has two or more second stages, the first and the second input terminal of the foremost second stage forming the first and respectively the second input terminal of the rectifier, the first and the second coupling terminal of the respective second stage being connected to the first and respectively second input terminal of the downstream second stage, provided that the respective second stage does not form the last stage of the rectifier, and the output of the rectifier being formed by the second input terminal of the foremost second stage and by the second coupling terminal of the last second stage.

11. The rectifier (6) as claimed in claims 7 and 9, characterized

in that the rectifier has one or a plurality of first stages (S61, S62) and one or a plurality of second stages (S63, S64), in that the first and the second input terminal (E61, E62) of the foremost first stage (S61) are connected to the first and respectively second input terminal (E61, E62) of the foremost second stage (S63) and form the first and respectively the second input terminal of the rectifier (6), and in that the output of the rectifier is formed by the second coupling terminal (B64) of the last first stage (S62) and by the second coupling terminal (B68) of the last second stage (S64).

12. The rectifier as claimed in one of the preceding claims,

characterized

in that one or a plurality of the organic diodes are formed by organic field effect transistors whose gate electrode is connected to the source or drain electrode.

13. The rectifier as claimed in one of claims 1 to 12, characterized

in that one or a plurality of the organic diodes has an interlayer for lowering the parasitic capacitance of the organic diode.

14. The rectifier as claimed in claim 1, characterized

in that the first and/or the second input terminal of the rectifier is connected via one or a plurality of first organic field effect transistors (OF1, OF3, OF2) to the charge-reversal capacitor (CS1, CS2), in that the charge-reversal capacitor (CS1, CS2) is connected via one or a plurality of second field effect transistors (OF4) to the charging capacitor (CO), and in that the one or the plurality of first field effect transistors are driven by a logic circuit (72).

15. An electronic device (5, 7, 8) in the form of a flexible, multilayer film body, in particular an RFID transponder (5),

characterized

in that the electronic device has a voltage source (51, 71, 81) and a rectifier (53, 83) as claimed in one of the preceding claims, said rectifier being fed by the voltage source.

16. The electronic device (5) as claimed in claim 15, characterized

in that the voltage source (51) has a resonant circuit comprising an antenna and a capacitor which is suitable for coupling in an electromagnetic radiation radiated onto the electronic device.

17. The electronic device (8) as claimed in claim 15, characterized

in that the voltage source has a ring oscillator (82).

18. The electronic device (7) as claimed in claim 15, characterized

in that the electronic device comprises a logic circuit (72) for applying an alternating voltage to a charge-reversal capacitor (CS1, CS2) of the rectifier.

19. The electronic device (5) as claimed in claim 15, characterized

in that the electronic device comprises an electronic circuit (53) based on one or a plurality of active or passive organic components which is fed by the rectifier (52).