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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(hào)
US12178080B2
公開日期
2024-12-24
申請(qǐng)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(shuō)明書

The sealing substrate 70 is a translucent insulation substrate, and a quartz substrate, a glass substrate, or the like can be used as the sealing substrate 70. The sealing substrate 70 has a function to protect the organic EL elements 30 which are arranged in the display area E from being damaged, and is widely provided instead of the display area E. The resin layer 71 has a function to cause the element substrate 10 to adhere to the sealing substrate 70, and, for example, an epoxy resin, an acrylic resin, or the like can be used as the resin layer 71.

The element substrate 10 includes the pixel circuit (the first transistor 21, the second transistor 22, the third transistor 23, the storage capacitor 24, and the organic EL element 30), a sealing layer 40, a color filter 50, and the like.

Light, which is emitted from the light emitting pixel 20, passes through the color filter 50 and is emitted from a side of the sealing substrate 70. That is, the organic EL apparatus 100 includes a top emission structure. Since the organic EL apparatus 100 includes the top emission structure, an opaque ceramic substrate or a semiconductor substrate can be used as a base material 10s of the element substrate 10 in addition to the transparent quartz substrate and the glass substrate. In the embodiment, a semiconductor substrate, for example, a silicon substrate is used as the base material 10s.

權(quán)利要求

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