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US 7,547,563 B2Granted
Method of manufacturing a light emitting device
AssigneeSemicondutor Energy Laboratory Co., Ltd.
InventorsShunpei Yamazaki, Yasuyuki Arai
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AssigneeSemicondutor Energy Laboratory Co., Ltd.
InventorsShunpei Yamazaki, Yasuyuki Arai
Estimating the term…
A technique capable of efficient, high speed processing for the formation of an organic compound layer by using an ink jet method is provided. In the method of forming an organic compound layer by using the ink jet method, a composition containing an organic compound having light emitting characteristics is discharged from an ink head, forming a continuous organic compound layer. The organic compound layer is formed on pixel electrodes aligned in a matrix shape, and is formed in a continuous manner over a plurality of pixel electrodes. A light emitting device is manufactured using organic light emitting elements in accordance with this manufacturing method.
A manufacturing method of a light emitting device comprising:
A manufacturing method of a light emitting device comprising:
A manufacturing method of a light emitting device comprising:
A manufacturing method of a light emitting device comprising:
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed: for marking on special material
Ink supply systems ; Circuit parts therefor: ink pumps, ink valves
OLED displays: active-matrix OLED [AMOLED] displays
Devices specially adapted for multicolour light emission: comprising red-green-blue [RGB] subpixels
Term ended 3 Jul 2022 (estimated)
1. Field of the Invention
The present invention relates to a method of manufacturing a light emitting device that uses an organic compound as a light emitter, in particular, a method of manufacturing a light emitting device by using an ink jet method.
2. Description of the Related Art
In the accompanying drawings:
FIG. 1 is a view for explaining the concept of forming an organic compound layer continuously by an ink jet method of the present invention;
FIG. 2 is a view for explaining the structure of a printing apparatus of an ink jet method;
An embodiment mode of the present invention is explained with reference to FIGS. 1 through 11C. FIG. 1 shows a stage at which a data line driver circuit 104 is formed on a substrate 101, and organic compound layers are formed on a pixel portion 102 by an ink jet method. Stripe shape partitions 105 are formed in the pixel portion 102, and the organic compound layer is formed between the partitions. The partitions 105 are formed in order to prevent adjacent organic compound layers from mixing with each other when forming the organic compound layers by the ink jet method.
Organic compound layers 106 are formed by discharging a composition containing an organic compound material that has light emitting characteristics from an ink head 107. The composition is discharged continuously from the ink head, forming a linear shape pattern. There are no particular limitations placed on the organic compound layer material, but in order to perform color display organic compound layers 106R, 106G, and 106B which emit light in the colors red, green, and blue, respectively, are formed.
A single layer structure may be used when forming the organic compound layer using a high molecular weight material suitable for the ink jet method. A laminate structure having two or more layers may also be formed preferably in order to further increase the efficiency of light emission. A typical laminate structure has a hole transporting layer and a light emitting layer laminated together.