JP2003036969A5 - - Google Patents

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JP2003036969A5
JP2003036969A5 JP2001328011A JP2001328011A JP2003036969A5 JP 2003036969 A5 JP2003036969 A5 JP 2003036969A5 JP 2001328011 A JP2001328011 A JP 2001328011A JP 2001328011 A JP2001328011 A JP 2001328011A JP 2003036969 A5 JP2003036969 A5 JP 2003036969A5
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light emitting
light
layer
refractive index
emitting region
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少なくとも、発光領域を有する発光層を備えた積層構造である発光素子であって、
前記発光素子中に屈折率が略１の層を有し、且つ前記発光領域における前記屈折率が略１の層側の面と前記屈折率が略１の層における前記発光領域側の面との距離が、光のピーク波長の５０％以下となるように規制されることを特徴とする発光素子。At least a light emitting element having a laminated structure including a light emitting layer having a light emitting region,
The light emitting element includes a layer having a refractive index of approximately 1, and a surface of the light emitting region on the layer side having a refractive index of approximately 1 and a surface of the layer having a refractive index of approximately 1 on the side of the light emitting region. A light-emitting element characterized in that the distance is regulated to be 50% or less of the peak wavelength of light. 請求項１に記載の発光素子であって、
基板上に、光反射性の第１の電極層と、前記発光領域を有する発光層と、透明な第２の電極層と、前記屈折率が略１の層とがこの順で設けられていることを特徴とする発光素子。The light emitting device according to claim 1,
On the substrate, a light-reflective first electrode layer, a light-emitting layer having the light-emitting region, a transparent second electrode layer, and a layer having a refractive index of approximately 1 are provided in this order. A light emitting element characterized by the above. 請求項２に記載の発光素子であって、
前記屈折率が略１の層の膜上に保護層が形成されていることを特徴とする発光素子。The light emitting device according to claim 2,
A light-emitting element, wherein a protective layer is formed on a film having a refractive index of about 1. 請求項１に記載の発光素子であって、
基板上に、反射層と、透明な第１の電極層と、発光領域を有する発光層と、透明な第２の電極層と、前記屈折率が略１の層とがこの順で設けられていることを特徴とする発光素子。The light emitting device according to claim 1,
On the substrate, a reflective layer, a transparent first electrode layer, a light emitting layer having a light emitting region, a transparent second electrode layer, and a layer having a refractive index of about 1 are provided in this order. A light emitting element characterized by comprising: 請求項４に記載の発光素子であって、
前記屈折率が略１の層の膜上に保護層が形成されていることを特徴とする発光素子。The light emitting device according to claim 4,
A light-emitting element, wherein a protective layer is formed on a film having a refractive index of about 1. 請求項１に記載の発光素子であって、
前記発光領域における前記屈折率が略１の層側の面と前記屈折率が略１の層における前記発光領域側の面との距離が、光のピーク波長の３０％以下となるように規制されることを特徴とする発光素子。The light emitting device according to claim 1,
The distance between the surface on the layer side having the refractive index of about 1 in the light emitting region and the surface on the side of the light emitting region in the layer having the refractive index of about 1 is regulated to be 30% or less of the peak wavelength of light. A light-emitting element. 請求項２に記載の発光素子であって、
前記発光領域における前記屈折率が略１の層側の面と前記屈折率が略１の層における前記発光領域側の面との距離が、光のピーク波長の３０％以下となるように規制されることを特徴とする発光素子。The light emitting device according to claim 2,
The distance between the surface on the layer side having the refractive index of about 1 in the light emitting region and the surface on the side of the light emitting region in the layer having the refractive index of about 1 is regulated to be 30% or less of the peak wavelength of light. A light-emitting element. 請求項３に記載の発光素子であって、
前記発光領域における前記屈折率が略１の層側の面と前記屈折率が略１の層における前記発光領域側の面との距離が、光のピーク波長の３０％以下となるように規制されることを特徴とする発光素子。The light emitting device according to claim 3,
The distance between the surface on the layer side having the refractive index of about 1 in the light emitting region and the surface on the side of the light emitting region in the layer having the refractive index of about 1 is regulated to be 30% or less of the peak wavelength of light. A light-emitting element. 請求項４に記載の発光素子であって、
前記発光領域における前記屈折率が略１の層側の面と前記屈折率が略１の層における前記発光領域側の面との距離が、光のピーク波長の３０％以下となるように規制されることを特徴とする発光素子。The light emitting device according to claim 4,
The distance between the surface on the layer side having the refractive index of about 1 in the light emitting region and the surface on the side of the light emitting region in the layer having the refractive index of about 1 is regulated to be 30% or less of the peak wavelength of light. A light-emitting element. 請求項５に記載の発光素子であって、
前記発光領域における前記屈折率が略１の層側の面と前記屈折率が略１の層における前記発光領域側の面との距離が、光のピーク波長の３０％以下となるように規制されることを特徴とする発光素子。The light emitting device according to claim 5,
The distance between the surface on the layer side having the refractive index of about 1 in the light emitting region and the surface on the side of the light emitting region in the layer having the refractive index of about 1 is regulated to be 30% or less of the peak wavelength of light. A light-emitting element. 請求項１に記載の発光素子であって、
前記発光領域における前記屈折率が略１の層側の面と前記屈折率が略１の層における前記発光領域側の面との距離が、光のピーク波長の２０％以下となるように規制されることを特徴とする発光素子。The light emitting device according to claim 1,
The distance between the surface on the layer side having the refractive index of about 1 in the light emitting region and the surface on the side of the light emitting region in the layer having the refractive index of about 1 is regulated to be 20% or less of the peak wavelength of light. A light-emitting element. 請求項２に記載の発光素子であって、
前記発光領域における前記屈折率が略１の層側の面と前記屈折率が略１の層における前記発光領域側の面との距離が、光のピーク波長の２０％以下となるように規制されることを特徴とする発光素子。The light emitting device according to claim 2,
The distance between the surface on the layer side having the refractive index of approximately 1 in the light emitting region and the surface on the light emitting region side of the layer having the refractive index of approximately 1 is regulated to be 20% or less of the peak wavelength of light. A light-emitting element. 請求項３に記載の発光素子であって、
前記発光領域における前記屈折率が略１の層側の面と前記屈折率が略１の層における前記発光領域側の面との距離が、光のピーク波長の２０％以下となるように規制されることを特徴とする発光素子。The light emitting device according to claim 3,
The distance between the surface on the layer side having the refractive index of approximately 1 in the light emitting region and the surface on the light emitting region side of the layer having the refractive index of approximately 1 is regulated to be 20% or less of the peak wavelength of light. A light-emitting element. 請求項４に記載の発光素子であって、
前記発光領域における前記屈折率が略１の層側の面と前記屈折率が略１の層における前記発光領域側の面との距離が、光のピーク波長の２０％以下となるように規制されることを特徴とする発光素子。The light emitting device according to claim 4,
The distance between the surface on the layer side having the refractive index of approximately 1 in the light emitting region and the surface on the light emitting region side of the layer having the refractive index of approximately 1 is regulated to be 20% or less of the peak wavelength of light. A light-emitting element. 請求項５に記載の発光素子であって、
前記発光領域における前記屈折率が略１の層側の面と前記屈折率が略１の層における前記発光領域側の面との距離が、光のピーク波長の２０％以下となるように規制されることを特徴とする発光素子。The light emitting device according to claim 5,
The distance between the surface on the layer side having the refractive index of approximately 1 in the light emitting region and the surface on the light emitting region side of the layer having the refractive index of approximately 1 is regulated to be 20% or less of the peak wavelength of light. A light-emitting element. 請求項１に記載の発光素子であって、
前記発光領域における前記屈折率が略１の層側の面と前記屈折率が略１の層における前記発光領域側の面との距離が、光のピーク波長の１０％以下となるように規制されることを特徴とする発光素子。The light emitting device according to claim 1,
The distance between the surface on the layer side having the refractive index of about 1 in the light emitting region and the surface on the side of the light emitting region in the layer having the refractive index of about 1 is regulated to be 10% or less of the peak wavelength of light. A light-emitting element. 請求項２に記載の発光素子であって、
前記発光領域における前記屈折率が略１の層側の面と前記屈折率が略１の層における前記発光領域側の面との距離が、光のピーク波長の１０％以下となるように規制されることを特徴とする発光素子。The light emitting device according to claim 2,
The distance between the surface on the layer side having a refractive index of about 1 in the light emitting region and the surface on the side of the light emitting region in the layer having a refractive index of about 1 is regulated to be 10% or less of the peak wavelength of light. A light-emitting element. 請求項３に記載の発光素子であって、
前記発光領域における前記屈折率が略１の層側の面と前記屈折率が略１の層における前記発光領域側の面との距離が、光のピーク波長の１０％以下となるように規制されることを特徴とする発光素子。The light emitting device according to claim 3,
The distance between the surface on the layer side having the refractive index of about 1 in the light emitting region and the surface on the side of the light emitting region in the layer having the refractive index of about 1 is regulated to be 10% or less of the peak wavelength of light. A light-emitting element. 請求項４に記載の発光素子であって、
前記発光領域における前記屈折率が略１の層側の面と前記屈折率が略１の層における前記発光領域側の面との距離が、光のピーク波長の１０％以下となるように規制されることを特徴とする発光素子。The light emitting device according to claim 4,
The distance between the surface on the layer side having the refractive index of about 1 in the light emitting region and the surface on the side of the light emitting region in the layer having the refractive index of about 1 is regulated to be 10% or less of the peak wavelength of light. A light-emitting element. 請求項５に記載の発光素子であって、
前記発光領域における前記屈折率が略１の層側の面と前記屈折率が略１の層における前記発光領域側の面との距離が、光のピーク波長の１０％以下となるように規制されることを特徴とする発光素子。The light emitting device according to claim 5,
The distance between the surface on the layer side having the refractive index of about 1 in the light emitting region and the surface on the side of the light emitting region in the layer having the refractive index of about 1 is regulated to be 10% or less of the peak wavelength of light. A light-emitting element. 請求項１に記載の発光素子であって、
前記反射層と前記境界面との間の距離ｔが５００μｍ以下であることを特徴とする発光素子。The light emitting device according to claim 1,
A light emitting element having a distance t between the reflective layer and the boundary surface of 500 μm or less. 請求項２に記載の発光素子であって、
前記反射層と前記境界面との間の距離ｔが５００μｍ以下であることを特徴とする発光素子。The light emitting device according to claim 2,
Emitting element you wherein the distance t between the reflective layer and the boundary surface is 500μm or less. 請求項３に記載の発光素子であって、
前記反射層と前記境界面との間の距離ｔが５００μｍ以下であることを特徴とする発光素子。The light emitting device according to claim 3,
A light emitting element having a distance t between the reflective layer and the boundary surface of 500 μm or less. 請求項４に記載の発光素子であって、
前記反射層と前記境界面との間の距離ｔが５００μｍ以下であることを特徴とする発光素子。The light emitting device according to claim 4,
A light emitting element having a distance t between the reflective layer and the boundary surface of 500 μm or less. 請求項５に記載の発光素子であって、
前記反射層と前記境界面との間の距離ｔが５００μｍ以下であることを特徴とする発光素子。The light emitting device according to claim 5,
A light emitting element having a distance t between the reflective layer and the boundary surface of 500 μm or less. 発光層と、前記発光層で発光する光を取り出す光取り出し面と、前記発光層と対向するように設けられ前記発光層から発光する光を反射する反射層と、前記発光層から光を取り出す方向に屈折率が大から小に変化する境界面と、少なくとも前記反射層表面、前記境界面に接する部位、又は、前記反射層と前記発光層との間に設けられた光散乱部と、を備えた積層構造を有する発光素子であって、
前記反射層と前記境界面との間の距離をｔ、前記発光素子の面内方向の任意の二点間距離のうち最も長い距離をＬ、前記境界面における臨界角をθ、前記発光層の屈折率をｎとした場合、下記の式（１）を満たしていることを特徴とする発光素子。
ｔ＜（ｎｃｏｓθ／２）×Ｌ ... （１）A light emitting layer, a light extraction surface for extracting light emitted from the light emitting layer, a reflective layer provided to face the light emitting layer and reflecting light emitted from the light emitting layer, and a direction for extracting light from the light emitting layer A boundary surface whose refractive index changes from large to small, and at least the surface of the reflective layer, a portion in contact with the boundary surface, or a light scattering portion provided between the reflective layer and the light emitting layer. A light emitting device having a laminated structure,
The distance between the reflective layer and the boundary surface is t, the longest distance between any two points in the in-plane direction of the light emitting element is L, the critical angle at the boundary surface is θ, and the light emitting layer A light emitting element satisfying the following formula (1), where n is a refractive index.
t <(n cos θ / 2) × L (1) 少なくとも、発光領域を有する発光層と、前記発光領域で発光した光を反射する反射層とを備えた積層構造であり、前記発光領域と離隔した光取り出し面より前記発光領域で発光する光を取り出す発光素子であって、
前記反射層の一部に、光散乱部が存在していることを特徴とする発光素子。It has a laminated structure including at least a light emitting layer having a light emitting region and a reflective layer that reflects light emitted from the light emitting region, and light emitted from the light emitting region is extracted from a light extraction surface separated from the light emitting region. A light emitting device,
A light-emitting element, wherein a light scattering portion is present in a part of the reflective layer.
JP2001328011A 2000-10-25 2001-10-25 Light emitting element, and display unit and illumination device using the same Withdrawn JP2003036969A (en)

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