Light emitting device, lighting device, and display device having light emitting device
AssigneeHitachi, Ltd.
InventorsMasaya Adachi, Hajime Murakami
Life of this patent
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Abstract
A light emitting device includes an organic light emitting layer disposed on a substrate and first and second electrodes between which the organic light emitting layer is disposed on the substrate. The second electrode is formed on the opposite side to the substrate of the organic light emitting layer. A buffer layer is disposed between the second electrode and the organic light emitting layer and is mainly made of oxide having a smaller quantity of oxygen generated in decomposition upon formation of the buffer layer than that of oxygen generated in decomposition upon formation of the second electrode. Further, the substrate is made of metal.
Claims18
A light emitting device including an organic light emitting layer disposed on a substrate and first and second electrodes between which said organic light emitting layer is disposed on said substrate, comprising:
- said first electrode formed on the side of said substrate of said organic light emitting layer;
- said second electrode being formed on the opposite side to said substrate of said organic light emitting layer;
- and
- a buffer layer disposed between said second electrode and said organic light emitting layer and mainly made of oxide having a smaller quantity of oxygen generated in decomposition upon formation of said buffer layer than that of oxygen generated in decomposition upon formation of said second electrode;
- said substrate being made of metal.
A lighting device including an organic light emitting layer disposed on a substrate and first and second electrodes between which said organic light emitting layer is disposed on said substrate, comprising:
- said first electrode formed on the side of said substrate of said organic light emitting layer;
- said second electrode being transmissible to visible light and formed on the opposite side to said substrate of said organic light emitting layer;
- said substrate made of metal;
- and
- a convex portion formed on the side where said organic light emitting layer is formed, of said substrate at periphery of an area where said organic light emitting layer is formed;
- said metal substrate being bonded to a transparent sealing member at said convex portion.
A display device including a display panel for forming image by controlling a transmission factor of light coming from at least the back thereof and a light emitting device disposed at the back of said display panel, wherein
- said display panel includes a transparent substrate having the light transmission characteristic, and
- said light emitting device includes an organic light emitting layer disposed on a substrate and first and second electrodes between which said organic light emitting layer is disposed on said substrate, said first electrode being formed on the side of said substrate of said organic light emitting layer, said second electrode being transmissible to visible light and formed on light out-coupling side corresponding to the opposite side to said substrate of said light emitting layer,
- a light scattering layer being disposed on the light out-coupling side of said light emitting layer and having an average refractive index smaller than that of said light emitting layer,
- said substrate on which said light emitting layer is formed being bonded to said transparent substrate of said display panel so that vacant space is formed between said light scattering layer and said transparent substrate of said display panel.
A light emitting device including an organic light emitting layer disposed on a substrate and first and second electrodes between which said organic light emitting layer is disposed on said substrate, comprising:
- said first electrode formed on the side of said substrate of said organic light emitting layer;
- said second electrode formed on the opposite side to said substrate of said organic light emitting layer;
- said substrate made of metal;
- and
- uneven portion having height of 0.5 to 5 μm and formed on the surface of said substrate.
A light emitting device including an organic light emitting layer disposed on a substrate and first and second electrodes between which said organic light emitting layer is disposed on said substrate, comprising:
- said first electrode formed on the side of said substrate of said organic light emitting layer;
- said second electrode formed on the opposite side to said substrate of said organic light emitting layer;
- said substrate made of metal;
- uneven portion formed on the surface of said substrate;
- and
- an insulating film formed into laminated structure of an insulating layer made of organic material and an insulating layer made of inorganic material and disposed between said first electrode and said substrate.
A light emitting device including a first electrode, an insulating layer having a plurality of openings, an organic light emitting device and a second electrode formed into laminated structure on a substrate, comprising
- a microlens array formed on said second electrode and having the centers of lenses thereof aligned with said openings of said insulating layer as observed from the front of said device.
Dependencies are inferred from the claim text.