Light-emitting device and manufacturing method thereof

Abstract

Disclosed is a light-emitting device that has a structure wherein the film thickness of a heat conductive member can be made thinner. The light-emitting device is provided with a supporting substrate; an organic electroluminescence element arranged on the supporting substrate; a sealing substrate for sealing the organic electroluminescence element, and which has a protrusion section protruding towards the organic electroluminescence element; and the heat conductive member that is formed between the organic electroluminescence element and the protrusion section. The organic electroluminescence element and the protrusion section are adhered together with the heat conductive member intervened therebetween, and a portion or all of the protrusion section is superimposed onto the organic electroluminescence element, when viewed from one direction in the thickness direction of the supporting substrate, and the area wherein the protrusion section is superimposed onto the organic electroluminescence element is smaller than the area of the organic electroluminescence element.

Description

technical field [0001] The invention relates to a light emitting device and a manufacturing method thereof. Background technique [0002] An organic electroluminescent element (hereinafter, sometimes referred to as an "organic EL element") is a light-emitting element that emits light by applying a voltage. Currently, light-emitting devices such as lighting devices and display devices that use the organic EL element as a light source are being paid. Various practicalities. [0003] The organic EL element generates heat during use, and its temperature rises. The increase in temperature of the organic EL element during use increases the deterioration of the element, and therefore various characteristics of the element deteriorate. For example, the brightness half-life becomes shorter. For this reason, various measures against heat generation for reducing the temperature during use have been studied. [0004] An organic EL element is usually provided on a support substrate, ...

AI Technical Summary

Problems solved by technology

When the gap is filled with a predetermined gas or is vacuumed, there is a problem that the heat generated in the organic EL element cannot be efficiently released from the sealing substrate due to poor heat conduction from the organic EL element to the sealing substrate.

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