Display devices using feedback enhanced light emitting diode
First Claim
1. A display device, comprising:
- a first feedback layer adapted to receive and reflect light;
one or more first electrode strips formed over the first feedback layer;
one or more semiconducting layers formed over the first electrode strips, at least one of the one or more semiconducting layers comprising at least a luminescent material;
one or more second electrode strips formed over the luminescent material the second electrode strips being formed such that they overlay one or more of the first electrode strips, wherein an area where the first electrode strip and the second electrode strip overlap comprises a segment area capable of being driven via the first electrode strips and the second electrode strips;
a second feedback layer adapted to receive and reflect light disposed over the one or more second electrode strips; and
an imaging element disposed proximate to one of the first feedback layer and the second feedback layer.
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Accused Products
Abstract
Display devices using feedback-enhanced light emitting diodes are disclosed. The display devices include but are not limited to active and passive matrix displays and projection displays. A light emissive element disposed between feedback elements is used as light emitting element in the display devices. The light emissive element may include organic or non-organic material. The feedback elements coupled to an emissive element allow the emissive element to emit collimated light by stimulated emission. In one aspect, feedback elements that provide this function include, but are not limited to, holographic reflectors with refractive index variations that are continuous.
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Citations
117 Claims
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1. A display device, comprising:
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a first feedback layer adapted to receive and reflect light;
one or more first electrode strips formed over the first feedback layer;
one or more semiconducting layers formed over the first electrode strips, at least one of the one or more semiconducting layers comprising at least a luminescent material;
one or more second electrode strips formed over the luminescent material the second electrode strips being formed such that they overlay one or more of the first electrode strips, wherein an area where the first electrode strip and the second electrode strip overlap comprises a segment area capable of being driven via the first electrode strips and the second electrode strips;
a second feedback layer adapted to receive and reflect light disposed over the one or more second electrode strips; and
an imaging element disposed proximate to one of the first feedback layer and the second feedback layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117)
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80. A method of fabricating a display device, comprising:
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forming pixel drive circuits on a substrate;
forming a first feedback layer having continuously varying refractive index profile on the substrate with pixel drive circuits;
forming a first conductive layer on the first feedback layer;
patterning the first conductive layer into first electrodes;
forming interconnections from the pixel drive circuits to the first electrodes;
forming a light emitting diode structure comprising at least one emissive layer on the first feedback layer and first electrodes;
forming a second conductive layer on the light emitting diode structure;
patterning the second conductive layer into second electrodes; and
forming a second feedback layer over the light emitting diode structure. - View Dependent Claims (81, 82, 83, 84, 85, 86, 87)
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88. A method of fabricating a display device, comprising:
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forming a substrate;
forming a first feedback layer having a continuously varying refractive index profile on the substrate;
forming one or more first electrode strips on the first feedback layer;
forming an OLED device comprising at least one layer of emissive material over the first electrode strips;
forming one or more second electrode strips over the OLED device overlaying the first electrode strips, wherein areas of the OLED device where the first electrode strip and the second electrode strip overlap form pixel areas capable of being driven via the first electrode strips and the second electrode strips; and
forming a second feedback layer over the one or more second electrode strips. - View Dependent Claims (89, 90)
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91. A display device, comprising:
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a first feedback layer;
a second feedback layer;
an luminescent device comprising at least one layer of semiconductor material disposed between the first feedback layer and the second feedback layer, the at least one layer of the semiconducting material comprising an luminescent material;
a projection lens disposed proximate to a light emitting portion of the second feedback layer. - View Dependent Claims (92, 93, 104)
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94. A display device, comprising:
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a first feedback layer;
a second feedback layer;
an luminescent device comprising at least one layer of semiconductor material disposed between the first feedback layer and the second feedback layer;
the at least one layer of the semiconducting material comprising at least an luminescent material;
a rear projection screen proximate to an emissive surface of the first feedback layer. - View Dependent Claims (95, 96, 97, 98, 99, 100, 101, 102, 103)
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Specification