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Light-emitting device, electronic device, and lighting device

專利號(hào)
US11800734B2
公開日期
2023-10-24
申請(qǐng)人
Semiconductor Energy Laboratory Co., Ltd.
發(fā)明人
Shunpei Yamazaki; Takeyoshi Watabe; Tomohiro Kubota; Airi Ueda; Satoshi Seo; Nobuharu Ohsawa; Yuko Kubota
IPC分類
H01L51/50; H10K50/115; H10K50/16; H10K50/17; H10K85/60
技術(shù)領(lǐng)域
emitting,light,layer,skeleton,phenyl,in,group,oxide,yl,9h
地域： Kanagawa-ken

摘要

A light-emitting apparatus with low power consumption is provided. A light-emitting apparatus including a first light-emitting device and a first color conversion layer. The first light-emitting device includes an anode, a cathode, and an EL layer positioned between the anode and the cathode. The EL layer includes a layer including a material with a refractive index lower than or equal to 1.75 at 467 nm. The first color conversion layer includes a first substance capable of emission by absorbing light. Light emitted from the first light-emitting device enters the first color conversion layer.

說(shuō)明書

In the general formulae (G2) to (G4), it is preferable that R10 to R14 and R20 to R24 be each any of hydrogen, a tert-butyl group, and a cyclohexyl group to lower the refractive index. In addition, in the general formulae (G2) to (G4), at least three of R10 to R14 and at least three of R20 to R24 are preferably hydrogen not to lower the carrier-transport property.

Furthermore, it is preferable that R10, R11, R13, R14, R20, R21, R23, and R24 be each hydrogen and R12 and R22 be each a cyclohexyl group.

It is also preferable that R10, R12, R14, R20, R21, R23, and R24 be each hydrogen, R11 and R13 be each a tert-butyl group, and R22 be a cyclohexyl group.

It is also preferable that R10, R12, R14, R20, R22, and R24 be each hydrogen, and R11, R13, R21, and R23 be each a tert-butyl group.

權(quán)利要求

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