NOVEL AMOLED DISPLAY ARCHITECTURE
First Claim
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1. A device, comprising:
- a first organic light emitting device that emits light having a peak wavelength in the visible spectrum of 600-700 nm, further comprising a first emissive layer having a first emissive material;
a second organic light emitting device that emits light having a peak wavelength in the visible spectrum of 500-600 nm, further comprising a second emissive layer having a second emissive material;
a third organic light emitting device that emits light having a peak wavelength in the visible spectrum of 400-500 nm, further comprising a third emissive layer having a third emissive material;
a fourth organic light emitting device that emits light having a peak wavelength in the visible spectrum of 400 to 500 nm, further comprising a fourth emissive layer having a fourth emissive material;
the first organic light emitting device comprises an emissive layer having a phosphorescent emissive material,the second organic light emitting device comprises an emissive layer having a phosphorescent emissive material,the third organic light emitting device comprises an emissive layer having a fluorescent emissive material,and the peak wavelength in the visible spectrum of light emitted by the fourth organic light emitting device is at least 4 nm less than the peak wavelength in the visible spectrum of light emitted by the third organic light emitting device.
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Abstract
A device that may be used as a multi-color pixel is provided. The device has a first organic light emitting device, a second organic light emitting device, a third organic light emitting device, and a fourth organic light emitting device. The device may be a pixel of a display having four sub-pixels. The first device may emit red light, the second device may emit green light, the third device may emit light blue light and the fourth device may emit deep blue light.
64 Citations
18 Claims
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1. A device, comprising:
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a first organic light emitting device that emits light having a peak wavelength in the visible spectrum of 600-700 nm, further comprising a first emissive layer having a first emissive material; a second organic light emitting device that emits light having a peak wavelength in the visible spectrum of 500-600 nm, further comprising a second emissive layer having a second emissive material; a third organic light emitting device that emits light having a peak wavelength in the visible spectrum of 400-500 nm, further comprising a third emissive layer having a third emissive material; a fourth organic light emitting device that emits light having a peak wavelength in the visible spectrum of 400 to 500 nm, further comprising a fourth emissive layer having a fourth emissive material; the first organic light emitting device comprises an emissive layer having a phosphorescent emissive material, the second organic light emitting device comprises an emissive layer having a phosphorescent emissive material, the third organic light emitting device comprises an emissive layer having a fluorescent emissive material, and the peak wavelength in the visible spectrum of light emitted by the fourth organic light emitting device is at least 4 nm less than the peak wavelength in the visible spectrum of light emitted by the third organic light emitting device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A device, comprising:
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a first organic light emitting device that emits light having a peak wavelength in the visible spectrum of 600-700 nm, further comprising a first emissive layer having a first emissive material; a second organic light emitting device that emits light having a peak wavelength in the visible spectrum of 500-600 nm, further comprising a second emissive layer having a second emissive material; a third organic light emitting device that emits light having a CIE y coordinate less than 0.25, further comprising a third emissive layer having a third emissive material; and a fourth organic light emitting device that emits light having a CIE y coordinate at least 0.02 less than that of light emitted by the third organic light emitting device, further comprising a fourth emissive layer having a fourth emissive material; wherein at least one of the first, second and third light emitting device comprises an emissive layer having a fluorescent emissive material;
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17. A method of operating a device having first, second, third and fourth organic light emitting devices such that the device emits light having a desired CIE coordinate, wherein
the first organic light emitting device emits light having a peak wavelength in the visible spectrum of 600-700 nm, and further comprises a first emissive layer having a first emissive material; -
the second organic light emitting device that emits light having a peak wavelength in the visible spectrum of 500-600 nm, and further comprises a second emissive layer having a second emissive material; the third organic light emitting device that emits light having a peak wavelength in the visible spectrum of 400-500 nm, and further comprises a third emissive layer having a third emissive material; the fourth organic light emitting device that emits light having a peak wavelength in the visible spectrum of 400 to 500 nm, and further comprises a fourth emissive layer having a fourth emissive material; wherein at least one of the first, second and third light emitting device comprises an emissive layer having a fluorescent emissive material, and the peak wavelength in the visible spectrum of light emitted by the fourth organic light emitting device is at least 4 nm less than the peak wavelength in the visible spectrum of light emitted by the third organic light emitting device; the CIE coordinates of light emitted by the first, second and third devices define a first triangle in the CIE space; the CIE coordinates of light emitted by the first, second and fourth devices define a second triangle in the CIE space; the CIE coordinates of light emitted by the second, third and fourth devices define a third triangle in the CIE space; the method comprising; emitting light from the first, second and third devices, but not the fourth device, to achieve emission of light with the desired CIE coordinates, if the desired CIE coordinates fall within the first triangle; emitting light from the first, second and fourth devices, but not the third device, to achieve emission of light with the desired CIE coordinates, if the desired CIE coordinates fall within the second triangle, and do not fall within the first triangle; emitting light from the second, third and fourth devices, but not the first device, to achieve emission of light with the desired CIE coordinates, if the desired CIE coordinates fall within the third triangle, and do not fall within the first triangle or second triangle;
or emitting light from the first, third and fourth devices, but not the second device, to achieve emission of light with the desired CIE coordinates, if the desired CIE coordinates fall within the third triangle, and do not fall within the first or second triangle; - View Dependent Claims (18)
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Specification