Organic Light Emitting Diode Phototherapy Lighting System

• US 20100179469A1
• Filed: 01/05/2010
• Published: 07/15/2010
• Est. Priority Date: 01/05/2009
• Status: Abandoned Application

• Current Assignee: Plextronics Incorporated (Rhodia Incorporated)
• Original Assignee: Plextronics Incorporated (Rhodia Incorporated)
• Inventors: Naik, Sujit, Pattison, Lisa, Hammond, Troy
• Application Number:
  US12/652,359
• Publication Number:
  US 20100179469A1
• Time in Patent Office: Days
• US Class Current: 604/20
• CPC Class Codes: A61B 2017/00061 spectrum
• CPC Class Codes: A61B 2017/00066 intensity
• CPC Class Codes: A61B 2017/00084 Temperature
• CPC Class Codes: A61B 2018/00791 Temperature
• CPC Class Codes: A61N 2005/0611 Vagina
• CPC Class Codes: A61N 2005/0645 Applicators worn by the patient
• CPC Class Codes: A61N 2005/0647 the applicator adapted to be worn on the head
• CPC Class Codes: A61N 2005/0653 Organic light emitting diodes
• CPC Class Codes: A61N 5/0603 for treatment of body cavities
• CPC Class Codes: A61N 5/0613 Apparatus adapted for a specific treatment
• CPC Class Codes: A61N 5/0616 Skin treatment other than tanning
• CPC Class Codes: A61N 5/0618 Psychological treatment
• CPC Class Codes: A61N 5/062 Photodynamic therapy, i.e. excitation of an agent
• CPC Class Codes: A61N 5/0621 Hyperbilirubinemia, jaundice treatment
• CPC Class Codes: A61N 5/0624 for eliminating microbes, germs, bacteria on or in the body

Abstract

A lighting system includes a plurality of organic light emitting diode (OLED) devices. By selecting the plurality of OLED devices, or by selectively controlling the plurality of OLED devices, the color characteristics of the lighting system can be tuned. The lifespan of the lighting system can be improved.

Claims

1. A phototherapy device, comprising:

at least one organic light emitting diode emitting at least one therapeutic wavelength; and

a control module to control at least one organic light emitting diode based upon a temperature, a desired intensity of light emitted, activation and deactivation of at least a portion of the organic light emitting diodes, input from a sensor, the desired spectrum of the emitted light, the length of the treatment, area of illumination or combinations thereof.

2. The phototherapy device of claim 1, wherein the phototherapy device is capable of being used for the treatment of one or more medical conditions selected from the group consisting of acne, psoriasis, eczema, cancer, pre-cancer, depression, bulimia, actinic keratosis, thyroid disorders, seasonal affective disorders, and circadian rhythm maintenance disorders, neuropathy, wrinkles, cellulite, sleep disorders, tremors associated with Parkinson'"'"'s disease, poor hair growth, poor fertility, obesity, wounds, poor circulation, irritable bowel syndrome, colic, inflammation, arthritis, Reynaud'"'"'s syndrome, and infections.

3. The phototherapy device of claim 1, wherein the phototherapy device is capable of treating neonatal jaundice.

4. The phototherapy device of claim 3, wherein the OLED is capable of emitting a wavelength for activating a pharmaceutical compound.

5. The phototherapy device of claim 4, further comprising the pharmaceutical compound to be activated by said organic light emitting diode for photodynamic therapy treatment.

6. The phototherapy device of claim 1, wherein the phototherapy device is capable of being used for teeth whitening, weight loss, hair growth, wrinkle reduction, evening skin tone, or for reducing the appearance of cellulite.

7. The phototherapy device of claim 1, wherein the organic light emitting diode comprises an OLED device substrate;

an anode;

a cathode;

an active region comprising an organic material, wherein the active region is electrically coupled to the anode and the cathode; and

an encapsulation over the organic light emitting diode.

8. The phototherapy device of claim 7, wherein at least one of the anode and cathode is transparent.

9. The phototherapy device of claim 7, wherein the anode, cathode, and OLED device substrate are substantially transparent such that the at least one organic light emitting diode is configured to emit light in both the anode and cathode directions.

10. The phototherapy device of claim 7, wherein the active region is configured to emit a broadband emission spectrum with a full width at half maximum larger than about 50 nm.

11. The phototherapy device of claim 7, wherein the active region is a continuous region forming a single emitter.

12. The phototherapy device of claim 7, wherein the active region comprises a plurality of light emitters.

13. The phototherapy device of claim 12, wherein the control module controls activation, deactivation, and activation levels of at least a portion of the light emitters.

14. The phototherapy device of claim 12, wherein the control module controls the level of intensity of the light emitters.

15. The phototherapy device of claim 7, wherein the active region further comprises an inorganic light emitter.

16. The phototherapy device of claim 15, wherein the inorganic light emitter is quantum dots or an inorganic phosphorescent material.

17. The phototherapy device of claim 7, wherein the active region comprises at least one of a polymer emitter or a small molecule emitter.

18. The phototherapy device of claim 7 or 12, wherein the active region comprises a plurality of vertically stacked light emitting layers.

19. The phototherapy device of claim 18, wherein at least two of the plurality of vertically stacked light emitting layers are configured to emit light of different colors.

20. The phototherapy device of claim 7, wherein the active region comprises at least one of a fluorescent emitter or a phosphorescent emitter.

21. The phototherapy device of claim 7, wherein the organic light emitting diode further comprises at least one hole injection layer.

22. The phototherapy device of claim 21, wherein at least one hole injection layer comprise at least one polythiophene.

23. The phototherapy device of claim 22, wherein at least one hole injection comprises at least one planarizing agent.

24. The phototherapy device of claim 7, wherein the organic light emitting diode further comprises at least one electron transport layer.

25. The phototherapy device of claim 7, further comprising one or more of a hole blocking layer, electron blocking layer, hole transport layer, electron transport layer, hole injection layer, or electron injection layer.

26. The phototherapy device of claim 7, wherein the encapsulation comprises a water and air barrier material with oxygen and water vapor transmission rates such that the phototherapy device is capable of performing for less than 100 hours of therapeutic use.

27. The phototherapy device of claim 7, wherein the encapsulation comprises a water and air barrier material with oxygen and water vapor transmission rates such that the phototherapy device is capable of performing for less than 1000 hours of therapeutic use.

28. The phototherapy device of claim 7, wherein the encapsulation comprises a water and air barrier material with oxygen and water vapor transmission rates such that the phototherapy device is capable of performing for a single therapeutic use.

29. The phototherapy device of claim 7, wherein the active region has an emissive area greater than 0.1 cm².

30. The phototherapy device of claim 7, wherein the active region has an emissive area less than 1 m².

31. The phototherapy device of claim 7, wherein the active region has an emissive area of greater than about 0.1 cm².

32. The phototherapy device of claim 1, wherein the at least one organic light emitting diode is a quantum dot organic light emitting diode.

33. The phototherapy device of claim 1, further comprising a transparent or semitransparent covering.

34. The phototherapy device of claim 33, wherein the transparent or semitransparent covering is one of a woven fabric, nonwoven fabric, or plastic film.

35. The phototherapy device of claim 1, wherein the phototherapy device is a pad, chamber, garment, bandage, mask, wrap, bassinet, body covering, probe, wand, or a handheld, freestanding, hanging, or mounted illumination source.

36. The phototherapy device of claim 1, wherein the at least one organic light emitting diode is positioned to form a non-planar emitting surface.

37. The phototherapy device of claim 36, wherein the non-planar emitting surface is cylindrical.

38. The phototherapy device of claim 1, wherein at least a portion of the at least one organic light emitting diodes are vertically stacked.

39. The phototherapy device of claim 1, wherein at least a portion of the organic light emitting diodes emit a therapeutic spectrum for the treatment of hyperbilirubinemia.

40. The phototherapy device of claim 39, wherein the spectrum comprises wavelengths substantially in the range of 410 nm to 550 nm.

41. The phototherapy device of claim 39, wherein the OLEDs are incorporated into a mattress, pad, bed sheet, robe, pants, shirt, torso wrap, or crib sheet, crib siding, crib cover, or bassinet.

42. The phototherapy device of claim 41, wherein the robe or shirt comprises sleeves.

43. The phototherapy device of claim 1, wherein the at least one organic light emitting diode emits light in the near infrared spectrum.

44. The phototherapy device of claim 1, wherein the at least one organic light emitting diode emits light in the visible spectrum.

45. The phototherapy device of claim 1, wherein the at least one organic light emitting diode emits light in the ultraviolet spectrum.

46. The phototherapy device of claim 1, wherein at least one organic light emitting diode is a chip.

47. The phototherapy device of claim 46, wherein one or more organic light emitting diode chips are disposed on a flexible phototherapy device substrate.

48. The phototherapy device of claim 47, wherein the flexible phototherapy device substrate is a woven fabric or cloth.

49. The phototherapy device of claim 48, wherein the flexible phototherapy device substrate comprises natural fiber, synthetic fibers or a combination of natural and synthetic fibers.

50. The phototherapy device of claim 47, wherein the flexible phototherapy device substrate is a plastic film.

51. The phototherapy device of claim 47, wherein the flexible phototherapy device substrate is a nonwoven fabric.

52. The phototherapy device of claim 46, wherein the one or more organic light emitting diode chips are disposed on a phototherapy device substrate that is a rigid substrate, a conformable substrate, a flexible substrate, or combinations thereof.

53. The phototherapy device of claim 1, wherein the at least one organic light emitting diode is in the shape of a disc or a polygon.

54. The phototherapy device of claim 1, wherein the at least one organic light emitting diodes form an array of organic light emitting diodes disposed on a a phototherapy device substrate that is a rigid substrate, a conformable substrate, a flexible substrate, or combinations thereof.

55. A device of claim 54, wherein the OLED device substrate is one of a rigid substrate, a conformable substrate, or flexible substrate.

56. The phototherapy device of claim 1, further comprising a power supply.

57. The phototherapy device of claim 56, wherein the power supply is portable.

58. The phototherapy device of claim 1, further comprising a portion adapted to contact the skin of a patient.

59. The phototherapy device of claim 58, further comprising a heat management system comprising an insulation layer between the portion adapted to contact the skin of a patient and at least one organic light emitting diode.

60. The phototherapy device of claim 1, further comprising holes to provide ventilation.

61. The phototherapy device of claim 1, further comprising a heat management system.

62. The phototherapy device of claim 61, wherein the heat management system comprises an air movement device.

63. The phototherapy device of claim 62, wherein the air movement device is a fan.

64. The phototherapy device of claim 61, further comprising a temperature sensor.

65. The phototherapy device of claim 61, wherein at least one organic light emitting diode is a chip and wherein the heat management system controls the output of at least one organic light emitting diode chip.

66. The phototherapy device of claim 64, wherein the temperature sensor senses a temperature on or near the skin of the patient, an illuminated surface, the at least one organic light emitting diode, or a power supply.

67. The phototherapy device of claim 65, wherein the heat management system controls the output of the organic light emitting diode chips by activating and deactivating the organic light emitting diode chips.

68. The phototherapy device of claim 65, wherein the heat management system controls the output of the organic light emitting diode chips by controlling the intensity output of the organic light emitting diode chips.

69. The phototherapy device of claim 61, wherein the heat management system comprises a heat sink.

70. The phototherapy device of claim 61, wherein the heat management system is a fluid-based cooling system.

71. The phototherapy device of claim 61, wherein the heat management system comprises a thermoelectrical cooling system.

72. The phototherapy device of claim 61, wherein the heat management system comprises an electro-mechanical cooling system.

73. The phototherapy device of claim 1, further comprising optics to distribute or focus light.

74. The phototherapy device of claim 1, wherein the control module is configured to selectively drive at least some of the organic light emitting diode devices to different activation levels to compensate for degradation of some of the organic light emitting diode devices thereby maintaining the desired output color characteristics.

75. The phototherapy device of claim 1, wherein the control module is further configured to tune a color of light emitted from the phototherapy device by selectively driving at least one of the organic light emitting diodes at activation levels different from other organic light emitting diodes.

76. The phototherapy device of claim 1, wherein the control module controls at least one of the intensity, spectrum output by the organic light emitting diodes, and the number of light emitting diodes that are activated.

77. The phototherapy device of claim 1, wherein the light emitting diodes are at least one light emitting diode selected from red organic light emitting diodes, green organic light emitting diodes, blue organic light emitting diodes, yellow organic light emitting diodes, white organic light emitting diodes, and combinations thereof.

78. The phototherapy device of claim 77, wherein the control module controls the number of each color of organic light emitting diodes that are activated and the intensity of the organic light emitting diodes.

79. The phototherapy device of claim 1, wherein the control module varies at least one of a voltage, current, a pulse width, or a pulse frequency to control at least one organic light emitting diode.

80. The phototherapy device of claim 1, further comprising at least one sensor to provide feedback to the control module.

81. The phototherapy device of claim 80, wherein at least one sensor detects a temperature, oxygen level, carbon monoxide level, carbon dioxide level, bilirubin level, skin color, blood content, bodily fluid content, blood sugar content, light intensity, or spectral characteristic.

82. The phototherapy device of claim 1, further comprising a timer.

83. The phototherapy device of claim 82, wherein the timer measures a session time, a total treatment time, or both.

84. A method of carrying out phototherapy, comprising:

diagnosing a condition that can be treated with phototherapy,

determining at least one area of the body to be exposed to phototherapeutic light,

determining at least one therapeutic wavelength to treat said condition, and

irradiating said at least one area of the body with said at least one therapeutic wavelength, said at least one therapeutic wavelength being produced by the phototherapy device of claim 1.

85. A method of carrying out phototherapy, comprising:

diagnosing a condition that can be treated by stimulation of the retina with a therapeutic spectrum,

determining the treatment protocol,

determining at least one therapeutic wavelength to treat said condition, and

positioning a light source emitting said at least one therapeutic wavelength near a patient such that said at least one therapeutic wavelength is visible with a therapeutic intensity by the patient, said light source comprising the phototherapy device of claim 1.

86. The method of carrying out phototherapy of claim 84 or 85, wherein the area of the body to be exposed to phototherapeutic light is an internal portion of the body.

87. The method of carrying out phototherapy of any of claims 84, 85, and 86, further comprising the application of photosensitive medication to the area of the body to be exposed to phototherapeutic light 86. The method of carrying out phototherapy of claim 84, wherein the condition to be treated is hyperbilirubinemia, and the at least one therapeutic wavelength is in the range of 410 to 550 nm.

88. The phototherapy device of claim 6, further comprising a light out coupling component.

89. The phototherapy device of claim 88, wherein the light out coupling component comprises a lens, an array of lenses, a roughened OLED device substrate or interface, a grid, a grating, a low refractive index layer, or a photonic crystal.