Organic electroluminescent device
An electroluminescent layer, electroluminescent technology, applied in electroluminescent light sources, electric light sources, light sources, etc., and can solve problems such as structural limitations
Inactive Publication Date: 2009-04-29
INTELLECTUAL DISCOVERY CO LTD
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- Application Information
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Problems solved by technology
[0010] Although a method for enhancing the contrast of an organic electroluminescent device having the above-mentioned general structure has been discussed and developed, the technical development for enhancing the contrast is limited due to the structure of the device and the characteristics of the materials used.
Method used
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[0023] Hereinafter, embodiments of the present invention will be specifically described with reference to these drawings.
[0024] image 3 is a partial sectional view of the organic electroluminescence device according to the first embodiment of the present invention, which corresponds to figure 2 Part "B" of .
[0025] The whole structure of the organic electroluminescence device in this example is the same as figure 1 with figure 2 as shown. Therefore, only the characteristic part of the organic electroluminescent device in this embodiment is enlarged and shown in image 3 middle.
[0026] Refer below image 3 The procedure for manufacturing the organic electroluminescence device and its structure are described.
[0027] First, an ITO layer 12 is formed on a glass substrate 11 by a vacuum deposition method, and the ITO layer 12 is patterned by a photolithography method to form an ITO electrode. Then, an insulating layer 16 is formed in certain regions of the ITO l...
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The present invention is characterized in having the structure which can reduce reflection ratio of exterior light when the device is not operating, that is, when light is not emitted from the device. To this end, the structural elements formed on the non-emitting areas are formed with dark color black matrix material. To have the structure, the present organic electroluminescent device comprises indium-tin-oxide (ITO) layers formed on a glass substrate; insulating layers formed on non-emitting area of the ITO layers, each insulating layer being formed with dark colored material; a plurality of walls formed on the insulating layers; and organic electroluminescence layers and metal layers formed sequentially on the entire structure including the walls, the organic electroluminescence layers and metal layers being separated from adjacent organic electroluminescence layers and metal layers by the walls. Each insulating layer is consisted of a black matrix film formed on the ITO layer and an insulating film formed on the black matrix film in the shape of wrapping the black matrix material layer. In another embodiment, each insulating layer formed below the wall is consisted of an insulating layer formed on the ITO layer and a black matrix film formed on the insulating film. Also, in the present organic electroluminescent device, the walls can be formed with back matrix material.
Description
technical field [0001] The present invention relates to an organic electroluminescent device, and more particularly, to an organic electroluminescent device whose contrast can be enhanced by forming structural parts on non-light-emitting regions with black matrix materials . Background technique [0002] Organic electroluminescence is a phenomenon in which excitons are formed in a thin film of (low-molecular or high-molecular) organic material by recombination of holes injected from the anode and electrons injected from the cathode, and by The energy produces light of a specific wavelength. [0003] figure 1 is a plan view of an organic electroluminescent device, and figure 2 is along figure 1 Sectional view taken along the midline A-A. These figures schematically show the basic structure of an organic electroluminescent device to which the above-mentioned phenomenon is applied. [0004] The basic structure of an organic electroluminescence device includes a glass sub...
Claims
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IPC IPC(8): H05B33/00H05B33/14
CPCH05B33/22H10K59/173H10K50/865
Inventor 尹明姬
Owner INTELLECTUAL DISCOVERY CO LTD