BUFFER LAYER FOR ORGANIC LIGHT EMITTING DEVICES AND METHOD OF MAKING THE SAME
First Claim
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1. A device comprising:
- a substrate;
an organic light emitting device (OLED) disposed over the substrate, the OLED comprising a cathode, an anode, and an organic emissive material disposed between the cathode and the anode;
a buffer layer disposed over the OLED; and
a first barrier layer disposed over the buffer layer, the first barrier layer comprising one or more materials selected from the group consisting of;
a metal oxide, a hybrid organic-inorganic oxide, a metal nitride, a metal oxy-nitride, a metal carbide, a metal oxy-boride barrier material, and a combination thereof;
wherein the buffer layer consists essentially of one or more materials that is fabricable without the use of an oxygen-containing gas.
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Abstract
A buffer layer is provided that can be fabricated over an OLED without the use of any oxygen-containing gas. The buffer layer reduces the possibility of damage to the underlying OLED due to use of oxygen-containing materials during deposition of subsequent barrier layers, and thereby allows for deposition of barrier layers without reducing the flexibility of the device.
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Citations
27 Claims
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1. A device comprising:
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a substrate; an organic light emitting device (OLED) disposed over the substrate, the OLED comprising a cathode, an anode, and an organic emissive material disposed between the cathode and the anode; a buffer layer disposed over the OLED; and a first barrier layer disposed over the buffer layer, the first barrier layer comprising one or more materials selected from the group consisting of;
a metal oxide, a hybrid organic-inorganic oxide, a metal nitride, a metal oxy-nitride, a metal carbide, a metal oxy-boride barrier material, and a combination thereof;wherein the buffer layer consists essentially of one or more materials that is fabricable without the use of an oxygen-containing gas. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. -16. (canceled)
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17. A method comprising:
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depositing a buffer layer over an OLED disposed on a substrate; and depositing a first barrier layer over the buffer layer, the first barrier layer comprising one or more materials selected from the group consisting of;
a metal oxide, a hybrid organic-inorganic oxide, a metal nitride, a metal oxy-nitride, a metal carbide, a metal oxy-boride barrier material, and a combination thereof;wherein the buffer layer consists essentially of one or more materials that is fabricable without the use of an oxygen-containing gas. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 26)
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25. (canceled)
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27. (canceled)
Specification