| 摘要 |
PROBLEM TO BE SOLVED: To provide a top-emission light-emitting device which achieves a narrower-band emission spectrum or an increased amount of outgoing light. SOLUTION: The light-emitting device includes a substrate 11, an optical reflection layer 13 formed on the substrate 11 for reflecting a light, a transparent layer 1 formed on the optical reflection layer 13 for light transmission, a transparent electrode 14 formed on the transparent layer 1 for light transmission, a light-emitting layer 15 formed on the transparent electrode 14 for light emission, and a semi-reflection electrode 16 formed on the light-emitting layer 15 for transmitting some portions of the light from the light-emitting layer 15 and reflecting any other portions of the light. The transparent layer 1 is formed with materials having the extinction factor lower than that of the transparent electrode 14. The semi-reflection electrode 16 has a work function of 4 electron volts or less. COPYRIGHT: (C)2008,JPO&INPIT
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