Light emitting device

US6528824B2 · kind B2 · utility

Assignee

• Semiconductor Energy Laboratory Co., Ltd. · JP

Inventors

• Hirokazu Yamagata · Tokyo, JP
• Junya Maruyama · Ebina, JP

Key dates

• Filing date: Jun 27, 2001
• Grant date: Mar 4, 2003
• Expiry date: Jun 27, 2021

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K59/8792

Abstract

In a light-emitting device wherein a light shield portion is disposed in touch with a transparent electrode included in a pixel, the light shield portion (105 in FIG. 1) is disposed at the peripheral part of the transparent electrode (101), whereby that part of light (visible light) emitted in an EL layer (102) which escapes from the peripheral part of the transparent electrode (101) can be intercepted or reflected. Thus, the loss of the light emitted in the EL layer (102) and the leakage thereof to an adjacent pixel can be prevented, and the efficiency of deriving the light can be sharply heightened.