Light-emitting device, display panel and preparation method of light-emitting device

The invention discloses a light-emitting device, a display panel and a preparation method thereof, and belongs to the technical field of electroluminescence, the light-emitting device comprises a substrate, the substrate is divided into a main device area and an auxiliary device area, at least one top emission structure electroluminescent device is formed on the main device area, and at least one top emission structure electroluminescent device is formed on the auxiliary device area. And at least one bottom emission structure electroluminescent device is formed on the auxiliary device region. According to the invention, the intrinsic wavelength test which is not influenced by the microcavity can be realized on the light-emitting device taking top emission as a main body. 本申请公开一种发光器件、显示面板及其制备方法，属于电致发光技术领域，本申请的发光器件包括基板，基板划分有主器件区域与副器件区域，主器件区域上形成有至少一个顶发射结构电致发光器件，副器件区域上形成有至少一个底发射结构电致发光器件。本申请可在顶发射为主体的发光器件上也能实现不受微腔影响的本征波长测试。