JP2015144106A5 - - Google Patents

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JP2015144106A5
JP2015144106A5 JP2014023926A JP2014023926A JP2015144106A5 JP 2015144106 A5 JP2015144106 A5 JP 2015144106A5 JP 2014023926 A JP2014023926 A JP 2014023926A JP 2014023926 A JP2014023926 A JP 2014023926A JP 2015144106 A5 JP2015144106 A5 JP 2015144106A5
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light
layer
emitting element
peak
spectrum
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JP2015144106A (en
JP6463891B2 (en
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第１の発光素子、第２の発光素子、第３の発光素子、および第４の発光素子は、いずれも第１の電極と、第２の電極とを有する一対の電極間に、第１のＥＬ層および第２のＥＬ層を有し、
前記第１の電極は、光反射機能を有し、
前記第２の電極は、光反射機能と、光透過機能とを有し、
前記第１のＥＬ層は、前記第２のＥＬ層と、電荷発生層を介して積層され、
前記第１のＥＬ層は、第１の発光層を有し、
前記第２のＥＬ層は、第２の発光層と、第３の発光層とが積層された構造を有し、
前記第２の発光層と、前記第３の発光層との間には、界面を有し、
前記第２の電極から前記界面までの光学距離は、λ／４未満であり、
前記第１の発光素子は、４５０ｎｍ以上４７０ｎｍ以下の範囲にスペクトルのピークを有する発光を呈し、
前記第２の発光素子は、５２０ｎｍ以上５５５ｎｍ以下の範囲にスペクトルのピークを有する発光を呈し、
前記第３の発光素子は、６００ｎｍ以上６２０ｎｍ以下の範囲にスペクトルのピークを有する発光を呈し、
前記第４の発光素子から得られる白色発光は、５２５ｎｍ以上５５５ｎｍ以下の範囲にスペクトルのピークを有し、かつ前記第４の発光素子から得られるスペクトルのピークは、前記第２の発光素子から得られるスペクトルのピークよりも長波長であることを特徴とする発光素子。 First light-emitting element, the second light-emitting element, the third light-emitting element, and the fourth light-emitting element are each a first electrode, between a pair of electrodes and a second electrode, the first Having an EL layer and a second EL layer;
The first electrode has a light reflecting function,
The second electrode has a light reflection function and a light transmission function,
The first EL layer is stacked with the second EL layer via a charge generation layer,
The first EL layer has a first light emitting layer,
The second EL layer has a structure in which a second light emitting layer and a third light emitting layer are stacked ,
There is an interface between the second light emitting layer and the third light emitting layer,
Optical distance from said second electrode before Symbol boundary surface is less than lambda / 4,
The first light emitting element emits light having a spectrum peak in a range of 450 nm to 470 nm,
The second light emitting element emits light having a spectrum peak in a range of 520 nm to 555 nm,
The third light emitting element emits light having a spectrum peak in a range of 600 nm to 620 nm;
The fourth white light emission derived from the light emitting element has a peak of the spectrum to 555nm below the range of 525 nm, and the fourth peak of the resulting spectra from the light-emitting element of from the second light emitting element A light-emitting element having a wavelength longer than a peak of an obtained spectrum. 第１の発光素子、第２の発光素子、第３の発光素子、および第４の発光素子は、いずれも第１の電極と、第２の電極とを有する一対の電極間に、第１のＥＬ層および第２のＥＬ層を有し、
前記第１の電極は、光反射機能を有し、
前記第２の電極は、光反射機能と、光透過機能とを有し、
前記第１のＥＬ層は、前記第２のＥＬ層と、電荷発生層を介して積層され、
前記第１のＥＬ層は、第１の発光層を有し、
前記第２のＥＬ層は、第２の発光層と、第３の発光層とが積層された構造を有し、
前記第２の発光層と、前記第３の発光層との間には、界面を有し、
前記第２の電極から前記界面までの光学距離は、λ／４未満であり、
前記第１の発光素子は、４５０ｎｍ以上４７０ｎｍ以下の範囲にスペクトルのピークを有する発光を呈し、
前記第２の発光素子は、５２０ｎｍ以上５５５ｎｍ以下の範囲にスペクトルのピークを有する発光を呈し、
前記第３の発光素子は、６００ｎｍ以上６２０ｎｍ以下の範囲にスペクトルのピークを有する発光を呈し、
前記第４の発光素子から得られる白色発光は、複数のスペクトルのピークを有し、
前記複数のスペクトルのピークのうち５２５ｎｍ以上５５５ｎｍ以下の範囲にあるピークは、前記第２の発光素子から得られるスペクトルのピークよりも長波長であることを特徴とする発光素子。 First light-emitting element, the second light-emitting element, the third light-emitting element, and the fourth light-emitting element are each a first electrode, between a pair of electrodes and a second electrode, the first Having an EL layer and a second EL layer;
The first electrode has a light reflecting function,
The second electrode has a light reflection function and a light transmission function,
The first EL layer is stacked with the second EL layer via a charge generation layer,
The first EL layer has a first light emitting layer,
The second EL layer has a structure in which a second light emitting layer and a third light emitting layer are stacked ,
There is an interface between the second light emitting layer and the third light emitting layer,
Optical distance from said second electrode before Symbol boundary surface is less than lambda / 4,
The first light emitting element emits light having a spectrum peak in a range of 450 nm to 470 nm,
The second light emitting element emits light having a spectrum peak in a range of 520 nm to 555 nm,
The third light emitting element emits light having a spectrum peak in a range of 600 nm to 620 nm;
The white light emission obtained from the fourth light emitting element has a plurality of spectral peaks,
Wherein the plurality of peaks in the range of not less than 525nm or 555nm of peak of the spectrum, the light-emitting element which is a longer wavelength than the peak of the spectrum obtained from the second light emitting element. 第１の発光素子、第２の発光素子、第３の発光素子、および第４の発光素子は、いずれも第１の電極と、第２の電極とを有する一対の電極間に、第１のＥＬ層および第２のＥＬ層を有し、
前記第１の電極は、光反射機能を有し、
前記第２の電極は、光反射機能と、光透過機能とを有し、
前記第１のＥＬ層は、前記第２のＥＬ層と、電荷発生層を介して積層され、
前記第１のＥＬ層は、第１の発光層を有し、
前記第２のＥＬ層は、第２の発光層と、第３の発光層とが積層された構造を有し、
前記第２の発光層と、前記第３の発光層との間には、界面を有し、
前記第２の電極から前記界面までの光学距離は、λ／４未満であり、
前記第１の発光素子は、４５０ｎｍ以上４７０ｎｍ以下の範囲にスペクトルのピークを有する発光を呈し、
前記第２の発光素子は、５２０ｎｍ以上５５５ｎｍ以下の範囲にスペクトルのピークを有する発光を呈し、
前記第３の発光素子は、６００ｎｍ以上６２０ｎｍ以下の範囲にスペクトルのピークを有する発光を呈し、
前記第４の発光素子から得られる白色発光は、６００ｎｍ以上６２０ｎｍ以下の範囲にスペクトルのピークを有し、かつ前記第４の発光素子から得られるスペクトルのピークは、前記第３の発光素子から得られるスペクトルのピークよりも短波長であることを特徴とする発光素子。 First light-emitting element, the second light-emitting element, the third light-emitting element, and the fourth light-emitting element are each a first electrode, between a pair of electrodes and a second electrode, the first Having an EL layer and a second EL layer;
The first electrode has a light reflecting function,
The second electrode has a light reflection function and a light transmission function,
The first EL layer is stacked with the second EL layer via a charge generation layer,
The first EL layer has a first light emitting layer,
The second EL layer has a structure in which a second light emitting layer and a third light emitting layer are stacked ,
There is an interface between the second light emitting layer and the third light emitting layer,
Optical distance from said second electrode before Symbol boundary surface is less than lambda / 4,
The first light-emitting element exhibits a light emission with a peak of the spectrum to 470nm below the range of 450 nm,
Said second light-emitting element exhibits a light emission with a peak of the spectrum in the 555nm the range above 520 nm,
The third light-emitting element exhibits a light emission with a peak of the spectrum in the range of 600nm or more 620 nm,
From the fourth white light emission derived from the light emitting element has a peak of the spectrum in the range of 600nm or more 620 nm, and the fourth peak of the resulting spectra from the light-emitting element of the third light emitting element A light-emitting element having a wavelength shorter than a peak of an obtained spectrum. 第１の発光素子、第２の発光素子、第３の発光素子、および第４の発光素子は、いずれも第１の電極と、第２の電極とを有する一対の電極間に、第１のＥＬ層および第２のＥＬ層を有し、
前記第１の電極は、光反射機能を有し、
前記第２の電極は、光反射機能と、光透過機能とを有し、
前記第１のＥＬ層は、前記第２のＥＬ層と、電荷発生層を介して積層され、
前記第１のＥＬ層は、第１の発光層を有し、
前記第２のＥＬ層は、第２の発光層と、第３の発光層とが積層された構造を有し、
前記第２の発光層と、前記第３の発光層との間には、界面を有し、
前記第２の電極から前記界面までの光学距離は、λ／４未満であり、
前記第１の発光素子は、４５０ｎｍ以上４７０ｎｍ以下の範囲にスペクトルのピークを有する発光を呈し、
前記第２の発光素子は、５２０ｎｍ以上５５５ｎｍ以下の範囲にスペクトルのピークを有する発光を呈し、
前記第３の発光素子は、６００ｎｍ以上６２０ｎｍ以下の範囲にスペクトルのピークを有する発光を呈し、
前記第４の発光素子から得られる白色発光は、複数のスペクトルのピークを有し、
前記複数のスペクトルのピークのうち６００ｎｍ以上６２０ｎｍ以下の範囲にあるピークは、前記第３の発光素子から得られるスペクトルのピークよりも短波長であることを特徴とする発光素子。 First light-emitting element, the second light-emitting element, the third light-emitting element, and the fourth light-emitting element are each a first electrode, between a pair of electrodes and a second electrode, the first Having an EL layer and a second EL layer;
The first electrode has a light reflecting function,
The second electrode has a light reflection function and a light transmission function,
The first EL layer is stacked with the second EL layer via a charge generation layer,
The first EL layer has a first light emitting layer,
The second EL layer has a structure in which a second light emitting layer and a third light emitting layer are stacked ,
There is an interface between the second light emitting layer and the third light emitting layer,
Optical distance from said second electrode before Symbol boundary surface is less than lambda / 4,
The first light-emitting element exhibits a light emission with a peak of the spectrum to 470nm below the range of 450 nm,
Said second light-emitting element exhibits a light emission with a peak of the spectrum in the 555nm the range above 520 nm,
The third light-emitting element exhibits a light emission with a peak of the spectrum in the range of 600nm or more 620 nm,
The white light emission obtained from the fourth light emitting element has a plurality of spectral peaks,
Wherein the plurality of peaks in the range of 600nm or more 620nm or less of the peak of the spectrum, the light emitting device characterized by than the peak of the third spectrum obtained from the light-emitting element is a short wavelength. 請求項１乃至請求項４のいずれかに記載の発光素子を用いた発光装置。 Light-emitting device using a light-emitting device according to any one of claims 1 to 4. 請求項５に記載の発光装置を用いた電子機器。 An electronic apparatus using the light emitting device according to claim 5 . 請求項５に記載の発光装置を用いた照明装置。 An illumination device using the light-emitting device according to claim 5 .
JP2014023926A 2013-12-26 2014-02-11 LIGHT EMITTING DEVICE, ELECTRONIC DEVICE, AND LIGHTING DEVICE Active JP6463891B2 (en)

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JP2017059537A (en) * 2015-09-17 2017-03-23 Cbc株式会社 White light-emitting organic el lighting system
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