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Light emitting device and electronic equipment including a light reflection layer, an insulation layer, and a plurality of pixel electrodes

專利號
US12178080B2
公開日期
2024-12-24
申請人
SEIKO EPSON CORPORATION(JP Tokyo)
發(fā)明人
Takeshi Koshihara; Ryoichi Nozawa
IPC分類
H10K59/121; H10K50/00; H10K50/805; H10K50/818; H10K50/824; H10K50/852; H10K50/856; H10K59/12; H10K59/123; H10K59/124; H10K59/126; H10K59/30; H10K59/35; H10K59/38; H10K102/00
技術(shù)領(lǐng)域
insulation,electrode,pixel,film,light,layer,emission,emitting,in,relay
地域: Tokyo

摘要

A light emitting device includes a transistor, a light reflection layer, a first insulation layer that includes a first layer thickness part, a second layer thickness part, and a third layer thickness part, a pixel electrode that is provided on the first insulation layer, a second insulation layer that covers a peripheral section of the pixel electrode, a light emission functional layer, a facing electrode, and a conductive layer that is provided on the first layer thickness part. The pixel electrode includes a first pixel electrode which is provided in the first layer thickness part, a second pixel electrode which is provided in the second layer thickness part, and a third pixel electrode which is provided in the third layer thickness part. The first pixel electrode, the second pixel electrode, and the third pixel electrode are connected to the transistor through the conductive layer.

說明書

The light emitting device which is manufactured using the manufacturing method according to the application example includes a configuration in which the light reflection layer, the first insulation layer, the pixel electrode, the light emission functional layer, and the facing electrode are laminated. Light, which is emitted from the light emission functional layer, reciprocates between the light reflection layer and the facing electrode, resonates according to the optical distance between the light reflection layer and the facing electrode, and light, which has a specific wavelength, is amplified. The optical distance varies according to the layer thicknesses of the first insulation layer. Since the first insulation layer is formed to have three layer thicknesses, light of three types of specific wavelengths is emitted. For example, if the first insulation layer is formed such that light of three types of wavelengths, that is, blue, green, and red is selectively amplified, it is possible to enhance the color purity of the blue, green, and red light which is emitted from the light emission functional layer.

權(quán)利要求

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