Electronic devices including dual-function electronic components, radiation-emitting components, radiation-sensing components, or any combination thereof

• US 20060145053A1
• Filed: 12/30/2004
• Published: 07/06/2006
• Est. Priority Date: 12/30/2004
• Status: Abandoned Application

• Current Assignee: E. I. du Pont de Nemours and Company (Corteva, Inc.)
• Original Assignee: E. I. du Pont de Nemours and Company (Corteva, Inc.)
• Inventors: Yu, Gang, Stevenson, Matthew
• Application Number:
  US11/027,658
• Publication Number:
  US 20060145053A1
• Time in Patent Office: Days
• US Class Current: 250/205
• CPC Class Codes: G01J 1/32 adapted for automatic variation of the measured or reference value regulation of light intensity G05D25/00
• CPC Class Codes: G01J 1/44 Electric circuits for command of an exposure part G03B7/02

Abstract

An electronic device can include circuitry that compensates for the emission intensity of a display, including a radiation-emitting component, in response to ambient radiation. In one embodiment, the circuitry includes a low-pass filter that can help to reduce the effect of quick changes in intensity of ambient radiation. In another embodiment, an electronic device includes a dual-function electronic component and a switch. The switch is configured to be closed at least during a portion of time while the dual-function electronic component is between an emission mode and a sensing mode. In still another embodiment, the circuitry includes a current amplifier that is configured to amplify a current from a radiation-sensing component to produce an amplified current. In yet another embodiment, the circuitry includes an I-V converter and a voltage amplifier. The I-V converter converts a current from a sensor to a voltage, and the voltage amplifier amplifies that voltage.

Claims

1. An electronic device comprising:

a low-pass filter configured to receive an output signal from a radiation-sensing component or a first derived signal derived from the output signal to produce a filtered signal, wherein the output signal corresponds to an intensity of ambient radiation sensed by the radiation-sensing component; and

a first radiation-emitting component designed to emit a first radiation based at least in part on the filtered signal or a second derived signal derived from the filtered signal.

2. The electronic device of claim 1, further comprising a first controller, wherein:

the electronic device is configured such that the output signal from the radiation-sensing component or the first derived signal passes through the low-pass filter before reaching the first controller; and

the first controller is configured to control an intensity of the first radiation emitted from the first radiation-emitting component at least partially in response to the filtered signal or the second derived signal.

3. The electronic device of claim 2, further comprising an amplifier configured to amplify the output signal from the radiation-sensing component or a third derived signal derived from the output signal to produce the first derived signal.

4. The electronic device of claim 3, further comprising an I-V converter configured to convert the output signal, which is a current, to the third derived signal, which is a voltage, wherein the amplifier is configured to receive the third derived signal.

5. The electronic device of claim 2, wherein the first radiation-emitting component comprises a first organic active layer.

6. The electronic device of claim 5, further comprising other radiation-emitting components substantially identical to the first radiation-emitting component, wherein the first controller is configured to control intensities of the first radiation emitted from the other radiation-emitting components at least partially in response to the filtered signal.

7. The electronic device of claim 5, further comprising a second radiation-emitting component and a third radiation-emitting component, wherein:

the first radiation has a first emission maximum at a first wavelength;

the second radiation-emitting component is designed to emit a second radiation having a second emission maximum at a second wavelength;

the third radiation-emitting component is designed to emit a third radiation having a third emission maximum at a third wavelength; and

the first, second, and third wavelengths are different compared to one another.

8. The electronic device of claim 7, further comprising a second controller and a third controller, wherein:

the second controller is configured to control an intensity of the second radiation emitted from the second radiation-emitting component at least partially in response to the filtered signal; and

the third controller is configured to control an intensity of the third radiation emitted from the third radiation-emitting component at least partially in response to the filtered signal.

9. The electronic device of claim 7, wherein:

the second radiation-emitting component comprises a second organic active layer;

the third radiation-emitting component comprises a third organic active layer; and

the first, second, and third organic active layers are different compared to one another.

10. The electronic device of claim 5, wherein the radiation-sensing component comprises a second organic active layer.

11. The electronic device of claim 1, wherein the low-pass filter has an input terminal and an output terminal, wherein the low-pass filter comprises:

a resistive electronic component having a first terminal and a second terminal, wherein the first terminal is connected to the input terminal, and the second terminal is connected to the output terminal; and

a capacitive electronic component having a first electrode and a second electrode, wherein the first electrode is connected to the input terminal, and the second electrode is designed to be at a substantially constant voltage during at least a portion of time when the electronic device operates.

12. An electronic device comprising:

a first dual-function electronic component having a first terminal and a second terminal, wherein the first dual-function electronic component is designed to emit a first radiation while in a first mode and to sense ambient radiation while in a second mode; and

a first switch having a first terminal and a second terminal, wherein;

the first terminal of the first switch is connected to the first terminal of the first dual-function electronic component;

the second terminal of the first switch is connected to the second terminal of the first dual-function electronic component; and

the first switch is configured to be;

closed at least during a portion of time while the first dual-function electronic component is between the first and second modes;

open at least during a portion of time while the first dual-function electronic component is in the first mode; and

open at least during a portion of time while the first dual-function electronic component is in the second mode.

13. The electronic device of claim 12, further comprising a first controller and a second switch, wherein:

the second switch has a first terminal connected to the first terminal of the first dual-function electronic component and a second terminal connected to an output of the first controller; and

the first controller is configured, when the second switch is closed, to control an intensity of the first radiation emitted from the first dual-function component.

14. The electronic device of claim 13, further comprising an amplifier and a third switch, wherein:

the third switch has a first terminal connected to the first terminal of the first dual-function electronic component and a second terminal coupled to an input of the amplifier; and

the amplifier is configured, when the third switch is closed, to amplify an output signal from the dual-function electronic component or a first derived signal derived from the output signal to produce an amplified signal.

15. The electronic device of claim 14, further comprising an I-V converter configured to convert the output signal, which is a current, to the first derived signal, which is a voltage.

16. The electronic device of claim 15, wherein the first controller is configured to receive the amplified signal or a second derived signal from the amplified signal.

17. The electronic device of claim 16, further comprising other dual-function electronic components substantially identical to the first dual-function electronic component, wherein the first controller is configured to control intensities of the first radiation emitted from the other dual-function electronic components.

18. The electronic device of claim 12, wherein the first dual-function electronic component comprises a first organic active layer.

19. The electronic device of claim 18, further comprising a second dual-function electronic component and a third dual-function electronic component, wherein:

the first radiation has a first emission maximum at a first wavelength;

the second dual-function electronic component is designed to emit a second radiation having a second emission maximum at a second wavelength;

the third dual-function electronic component is designed to emit a third radiation having a third emission maximum at a third wavelength; and

the first, second, and third wavelengths are different compared to one another.

20. The electronic device of claim 19, wherein:

the second dual-function electronic component comprises a second organic active layer;

the third dual-function electronic component comprises a third organic active layer; and

the first, second, and third organic active layers are different compared to one another.

21. An electronic device comprising:

a current amplifier that is configured to amplify an output current from a radiation-sensing component to produce an amplified current, wherein the output current corresponds to an intensity of ambient radiation sensed by the radiation-sensing component; and

a first radiation-emitting component configured to emit a first radiation based at least in part on the amplified current.

22. The electronic device of claim 21, further comprising a controller that is configured to control an intensity of the first radiation emitted from the first radiation-emitting component.

23. The electronic device of claim 22, further comprising a low-pass filter configured to receive the amplified current to produce a filtered current to be received by the controller.

24. The electronic device of claim 22, wherein the first radiation-emitting component comprises a first organic active layer.

25. The electronic device of claim 24, further comprising other radiation-emitting components substantially identical to the first radiation-emitting component, wherein the controller is configured to control intensities of the first radiation emitted from the other radiation-emitting components.

26. The electronic device of claim 24, further comprising a second radiation-emitting component and a third radiation-emitting component, wherein:

the first radiation has a first emission maximum at a first wavelength;

the second radiation-emitting component is designed to emit a second radiation having a second emission maximum at a second wavelength;

the third radiation-emitting component is designed to emit a third radiation having a third emission maximum at a third wavelength; and

the first, second, and third wavelengths are different compared to one another.

27. The electronic device of claim 26, wherein:

the second radiation-emitting component comprises a second organic active layer;

the third radiation-emitting component comprises a third organic active layer; and

the first, second, and third organic active layers are different compared to one another.

28. An electronic device comprising:

an I-V converter configured to convert an output current from a radiation-sensing component to a converted voltage, wherein the output current corresponds to an intensity of ambient radiation sensed by the radiation-sensing component;

a voltage amplifier that is connected in series with the I-V converter, wherein the voltage amplifier is configured to amplify the converted voltage from the I-V converter to produce an amplified voltage; and

a first radiation-emitting component configured to emit a first radiation based at least in part on the amplified voltage or a first derived signal derived from the amplified voltage.

29. The electronic device of claim 28, further comprising a controller, wherein the controller is configured to control an intensity of the first radiation emitted from the first radiation-emitting component at least partially in response to the amplified voltage or the first derived signal.

30. The electronic device of claim 29, wherein the first radiation-emitting component comprises a first organic active layer.

31. The electronic device of claim 30, further comprising other radiation-emitting components substantially identical to the first radiation-emitting component, wherein the controller is configured to control intensities of the first radiation emitted from the other radiation-emitting components.

32. The electronic device of claim 30, further comprising a second radiation-emitting component and a third radiation-emitting component, wherein:

the first radiation has a first emission maximum at a first wavelength;

the second radiation-emitting component is designed to emit a second radiation having a second emission maximum at a second wavelength;

the third radiation-emitting component is designed to emit a third radiation having a third emission maximum at a third wavelength; and

the first, second, and third wavelengths are different compared to one another.

33. The electronic device of claim 32, wherein:

the second radiation-emitting component comprises a second organic active layer;

the third radiation-emitting component comprises a third organic active layer; and

the first, second, and third organic active layers are different compared to one another.

34. The electronic device of claim 30, wherein the radiation-sensing component comprises a second organic active layer.

35. The electronic device of claim 28, further comprising a low-pass filter configured to receive the amplified voltage to produce a filtered signal, wherein the filtered signal is the first derived signal.