Efficient white-light OLED display with filters
First Claim
1. A white light-emitting OLED device comprising:
- a) an anode and a cathode;
b) at least four light-emitting layers provided between the anode and the cathode, wherein each of the four light-emitting layers produces a different emission spectrum when current passes between the anode and cathode, and such spectra combine to form white light; and
c) wherein the four light-emitting layers include a red light-emitting layer, a yellow light-emitting layer, a blue light-emitting layer, and a green light-emitting layer, arranged such that;
i) each of the light-emitting layers is in contact with at least one other light-emitting layer, ii) the blue light-emitting layer is in contact with the green light-emitting layer, and iii) the red light-emitting layer is in contact with only one other light-emitting layer.
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Accused Products
Abstract
A white light-emitting OLED device comprising: an anode and a cathode; at least four light-emitting layers provided between the anode and the cathode, wherein each of the four light-emitting layers produces a different emission spectrum when current passes between the anode and cathode, and such spectra combine to form white light; and wherein the four light-emitting layers include a red light-emitting layer, a yellow light-emitting layer, a blue light-emitting layer, and a green light-emitting layer, arranged such that: i) each of the light-emitting layers is in contact with at least one other light-emitting layer, ii) the blue light-emitting layer is in contact with the green light-emitting layer, and iii) the red light-emitting layer is in contact with only one other light-emitting layer.
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Citations
32 Claims
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1. A white light-emitting OLED device comprising:
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a) an anode and a cathode;
b) at least four light-emitting layers provided between the anode and the cathode, wherein each of the four light-emitting layers produces a different emission spectrum when current passes between the anode and cathode, and such spectra combine to form white light; and
c) wherein the four light-emitting layers include a red light-emitting layer, a yellow light-emitting layer, a blue light-emitting layer, and a green light-emitting layer, arranged such that;
i) each of the light-emitting layers is in contact with at least one other light-emitting layer, ii) the blue light-emitting layer is in contact with the green light-emitting layer, and iii) the red light-emitting layer is in contact with only one other light-emitting layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 29, 30)
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10. A white light-emitting OLED display comprising:
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a) an array of first, second, third, and fourth light-emitting pixels, each pixel having an anode, a cathode, and at least four light-emitting layers provided between the anode and the cathode, wherein each of the four light-emitting layers produces a different emission spectrum when current passes between the anode and cathode;
b) wherein the four light-emitting layers include a red light-emitting layer, a yellow light-emitting layer, a blue light-emitting layer, and a green light-emitting layer, arranged such that;
i) each of the light-emitting layers is in contact with at least one other light-emitting layer, ii) the blue light-emitting layer is in contact with the green light-emitting layer, and iii) the red light-emitting layer is in contact with only one other light-emitting layer; and
c) an array of at least three different color filters in operative association with the first, second, and third light-emitting pixels, such filters being selected to receive white light to produce different colored light. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A tandem white light-emitting OLED device comprising:
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a) a spaced anode and cathode;
b) at least two white light-emitting units that are disposed between the electrodes and that produce emission spectra corresponding to white light and each white light-emitting unit having four light-emitting layers including a red light-emitting layer, a yellow light-emitting layer, a blue light-emitting layer, and a green light-emitting layer, arranged such that;
i) each of the light-emitting layers of a white light-emitting unit is in contact with at least one other light-emitting layer of that unit, ii) the blue light-emitting layer of a white light-emitting unit is in contact with the green light-emitting layer of that unit, and iii) the red light-emitting layer of a white light-emitting unit is in contact with only one other light-emitting layer of that unit; and
c) an intermediate connector disposed between the white light-emitting units. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 31, 32)
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Specification