Top-OLEDs with multilayer output coupling unit and flat panel display devices using the same

    公开(公告)号:US10461279B2

    公开(公告)日:2019-10-29

    申请号:US15543992

    申请日:2017-06-23

    发明人: Wei Yuan

    IPC分类号: H01L51/52 H01L27/32

    摘要: The present disclosure relates to a flat panel display device and a top organic light emitting diode (Top-OLED). The Top-OLED includes: a light emitting unit and a light output coupling unit configured on a light output surface of the light emitting unit, wherein the light output coupling unit is configured with a first light emitting coupling layer and a second first light emitting coupling layer configured on the light output surface of the light emitting unit in sequence A refractive index of the first light emitting coupling layer is greater than a refractive index of the second light emitting coupling layer. The light emitting coupling layers configured on the light output surface of the light emitting unit having the refractive index being configured to be decreased gradually, so as to enhance the external quantum efficiency and to increase the amount of outputting light beams.

    LED display panel
    2.
    发明授权

    公开(公告)号:US10276756B2

    公开(公告)日:2019-04-30

    申请号:US15541368

    申请日:2017-05-27

    摘要: The present disclosure discloses an LED display panel including at least a thin film transistor array layer, a quantum dot light emitting layer, and an LED array layer arranged between the thin film transistor array layer and the quantum dot light emitting layer, when the LED array layer emits excitation light, the excited quantum dot emits light to emit at least two colors of light. The present disclosure can reduce the production cost and greatly improve the production yield, and can effectively reduce the energy consumption of the display panel and improve the service life.

    TANDEM ORGANIC ELECTROLUMINESCENT ELEMENT
    3.
    发明申请

    公开(公告)号:US20180269419A1

    公开(公告)日:2018-09-20

    申请号:US15540033

    申请日:2017-02-15

    发明人: Aiguo Tu Wei Yuan

    IPC分类号: H01L51/50 H01L51/52

    摘要: Provided is a tandem organic electroluminescent element, comprising a first electrode, a first light emitting unit, a third electron transporting layer, a second electron transporting layer, a first electron transporting layer, a charge generation layer, a second light emitting unit and a second electrode which are stacked up from bottom to top; both the first electron transporting layer and the second electron transporting layer comprising n type dopant, and a concentration of the n type dopant in the first electron transporting layer being larger than a concentration of the n type dopant in the second electron transporting layer, and the third electron transporting layer comprising no n type dopant; the arrangement of the first, the second and the third electron transporting layers can reduce the energy barrier of injecting electrons into the first light emitting unit by the charge generation layer to make the electrons easy to be injected.

    Tandem organic electroluminescent element

    公开(公告)号:US10147899B2

    公开(公告)日:2018-12-04

    申请号:US15540033

    申请日:2017-02-15

    发明人: Aiguo Tu Wei Yuan

    IPC分类号: H01L51/52 H01L27/32 H01L51/50

    摘要: Provided is a tandem organic electroluminescent element, comprising a first electrode, a first light emitting unit, a third electron transporting layer, a second electron transporting layer, a first electron transporting layer, a charge generation layer, a second light emitting unit and a second electrode which are stacked up from bottom to top; both the first electron transporting layer and the second electron transporting layer comprising n type dopant, and a concentration of the n type dopant in the first electron transporting layer being larger than a concentration of the n type dopant in the second electron transporting layer, and the third electron transporting layer comprising no n type dopant; the arrangement of the first, the second and the third electron transporting layers can reduce the energy barrier of injecting electrons into the first light emitting unit by the charge generation layer to make the electrons easy to be injected.