Organic Light Emitting Device and Display Apparatus

    公开(公告)号:US20230255045A1

    公开(公告)日:2023-08-10

    申请号:US17608749

    申请日:2021-01-22

    CPC classification number: H10K50/121 H10K50/181 H10K50/13 H10K2101/40

    Abstract: Provided is an organic light emitting device, including a first electrode, second electrode, and first and second emitting layers that are disposed between first and second electrodes. The first emitting layer is located on a side of the second emitting layer close to the first electrode. The first emitting layer includes a first host material and first dopant material. The second emitting layer includes a second host material different from the first host material, and second dopant material. An electron block layer disposed between first emitting layer and first electrode, first emitting layer and second emitting layer satisfy:


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    ELECTROLUMINESCENT DEVICE AND METHOD FOR PREPARING THE SAME, DISPLAY PANEL AND DISPLAY DEVICE

    公开(公告)号:US20220115614A1

    公开(公告)日:2022-04-14

    申请号:US17334466

    申请日:2021-05-28

    Abstract: The present disclosure provides an electroluminescent device and a method for preparing the same, a display panel and a display device. The electroluminescent device includes a light emitting layer, a cathode layer, and an electron transport layer arranged between the light emitting layer and the cathode layer. The electron transport layer includes at least a first electron transport material and a second electron transport material that have different LUMO energy levels, and a ratio EM1/EM2 of the weight content of the first electron transport material to that of the second electron transport material decreases in a direction from a surface thereof proximate to the cathode layer to a surface thereof proximate to the light emitting layer. The electroluminescent device of the present disclosure can improve its efficiency and lifetime.

    ORGANIC LIGHT-EMITTING DIODE DEVICE, MANUFACTURING METHOD THEREOF, AND DISPLAY DEVICE

    公开(公告)号:US20200220112A1

    公开(公告)日:2020-07-09

    申请号:US15751703

    申请日:2017-08-15

    Abstract: The present disclosure discloses an organic light-emitting diode device, a manufacturing method thereof and a display device. The organic light-emitting diode device comprises: a substrate (100); an organic light-emitting diode layer (200) on a side of the substrate (100); and a barrier layer (510) configured to block ultraviolet rays from entering the organic light-emitting diode layer, wherein the barrier layer is on a side of the organic light-emitting diode layer away from the substrate or on a side of the organic light-emitting diode layer close to the substrate. The organic light-emitting diode device can solve the technical problem of short service life due to the influence of ultraviolet rays in the sunlight.

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