発光装置および電子機器

Japanese Patent JP5741221

B2

PROBLEM TO BE SOLVED: To reduce irregularities at pixel parts as much as possible and suppress color mixture due to reflection from a vertical conduction part while maintaining high light extraction efficiency, in a top emission type light emitting device comprising a combination of a white organic EL element and a resonance structure.SOLUTION: A light emitting device E1 has an optical structure in which an expression of D={(2πm+φ+φ)/4π}λ is satisfied, where D represents a distance between a reflective layer 12 and a counter electrode 22, φrepresents a phase shift in reflection at the reflective layer 12, φrepresents a phase shift in reflection at the counter electrode 22, λ represents a peak wavelength of a standing wave generated between the reflective layer 12 and the counter electrode 22, and m represents an integer of 2 or less. In the light emitting device E1, a length from an interface between a pixel electrode 15 and a vertical conduction part 330 to the counter electrode 22 is set to a value from the distance D at which a red peak wavelength can be obtained when m is equal to 0 in the expression to the distance D at which a blue peak wavelength can be obtained when m is equal to 1 in the expression.

Yukiya Shiratori

JP2011121791A

July 01, 2015

May 31, 2011

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Seiko Epson Corporation

H05B33/24; H01L51/50; H05B33/06; H05B33/22; H05B33/28

JP2007207460A
JP2011096379A
JP2006253015A
JP2005197011A
JP2010056017A
JP2005116516A

US20090251051
US20060158403

Akira Obayashi
Yashiro Hitoshi
Taro Takahashi

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