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Organic electroluminescence device, process of producing organic electroluminescence device, and electronic apparatus

An electroluminescence device and electroluminescence technology, which are applied to electroluminescence light sources, electric light sources, lighting devices, etc., can solve the problems of cracking, low reliability of organic EL devices, and inability to follow the inorganic compound layer, and achieve high reliability. Effect

Inactive Publication Date: 2010-01-27
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, in the case where the inorganic compound layer is laminated on the resin layer, when the inorganic compound layer is provided on the resin layer, due to the expansion and contraction of the resin layer due to temperature changes, etc., the inorganic compound layer at the end of the resin layer may be damaged. fails to follow the stretch and breaks
If the resin layer is not used, it is difficult to flatten the unevenness near the light-emitting element, and the unevenness that is easy to break the inorganic compound layer remains, so the reliability of the manufactured organic EL device is low.

Method used

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  • Organic electroluminescence device, process of producing organic electroluminescence device, and electronic apparatus
  • Organic electroluminescence device, process of producing organic electroluminescence device, and electronic apparatus
  • Organic electroluminescence device, process of producing organic electroluminescence device, and electronic apparatus

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Effect test

no. 1 approach

[0047] Below, refer to Figure 1 to Figure 6 , the organic electroluminescent device (organic EL device) according to the first embodiment of the present invention will be described. However, in all the following drawings, the film thicknesses and dimensional ratios of the respective constituent elements are suitably different in order to facilitate viewing of the drawings.

[0048] figure 1 It is a cross-sectional view schematically showing the organic EL device 1 . The organic EL device 1 of the present invention is a so-called "top emission type" organic EL device. Since the top emission method extracts light not from the substrate side where the organic EL element is arranged but from the opposite substrate side, the light-emitting area is not affected by the size of various circuits arranged on the element substrate, and it has the advantage of ensuring a large light-emitting area. Effect. Therefore, luminance can be ensured while suppressing voltage and current, and ...

no. 2 approach

[0145] Figure 7 It is an explanatory diagram of the organic EL device according to the second embodiment of the present invention. The organic EL device of this embodiment is partially shared with the organic EL device of the first embodiment. The difference is that the auxiliary wiring is not provided with a function as a protective layer of the cathode, but an electrode protective layer for protecting the cathode is provided. Therefore, the same reference numerals are assigned to the same components in this embodiment as those in the first embodiment, and detailed description thereof will be omitted.

[0146] like Figure 7 As shown in (a), an auxiliary cathode wiring 24 for supplying electricity to the auxiliary cathode 11 and the cathode wiring 22A is provided at the end of the cathode 11, and covers the entire surface of the cathode 11, the cathode wiring 22A, and the auxiliary cathode wiring 24. An electrode protection layer 17 is formed. With this electrode protect...

Embodiment

[0159] Embodiments of the present invention will be described below. In this example, in order to confirm the effect of the invention, a test body for evaluation which is a substitute of an organic EL device was prepared and evaluated.

[0160] In the test body used in this example, a magnesium film (Mg film) was formed on a glass support substrate, and a thin-film sealing layer composed of an electrode protective layer (SiON) / organic buffer layer / gas barrier layer was formed to cover the Mg film. Furthermore, a glass counter substrate is bonded on the thin film sealing layer. The electrode protection layer is formed so as to be in contact with the supporting substrate and has a structure to seal the Mg film. Furthermore, it is formed so that the electrode protective layer is in contact with the gas barrier layer, and has a structure that seals the organic buffer layer.

[0161] In the test body used, the thicknesses of the respective components were set to Mg film: 50 nm, e...

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Abstract

An organic electroluminescence device includes a substrate, a plurality of light-emitting elements arranged on the substrate, each including a pair of electrodes and an organic light-emitting layer disposed between the electrodes, an organic buffer layer covering the plurality of light-emitting elements, and a gas barrier layer covering the organic buffer layer. The gas barrier layer has a structure wherein first inorganic films and second inorganic films are alternately stacked. The first inorganic films contain a silicon compound containing nitrogen, the second inorganic films contain an oxide of the formation material of the first inorganic films and each have a thickness smaller than that of each first inorganic film. The numbers of the first inorganic films and the second inorganic films are each at least two.

Description

technical field [0001] The present invention relates to an organic electroluminescent device, a method for manufacturing the organic electroluminescent device, and electronic equipment. Background technique [0002] Along with the diversification of information devices, etc., the demand for light-weight flat-panel display devices with low power consumption is increasing. As one of such flat-panel display devices, an organic electroluminescence device (hereinafter referred to as "organic EL device") provided with an organic light-emitting layer is known. [0003] An organic EL device includes a plurality of organic light emitting elements (organic EL elements) configured by interposing functional layers such as an organic light emitting layer (light emitting layer) and an electron injection layer between an anode and a cathode. Among them, since the cathode and the electron injection layer are formed of materials having the property of easily releasing electrons, they are li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/32H01L23/29H01L21/56
CPCH01L51/5237H10K59/8722H10K59/8731H05B33/04H10K2102/103H10K50/8445H10K50/8426
Inventor 林建二
Owner SEIKO EPSON CORP
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