Light extraction apparatus and OLED displays

    公开(公告)号:US11805673B2

    公开(公告)日:2023-10-31

    申请号:US15734788

    申请日:2018-06-06

    CPC classification number: H10K50/852 H10K2102/3026 H10K2102/3035

    Abstract: A light extraction apparatus for an organic light-emitting diode (OLED) includes an OLED emitter (100), a plurality of tapered reflectors (210), and a spacer layer (202). Each tapered reflector includes a first surface (212), a second surface (214) opposite to the first surface and comprising a surface area larger than a surface area of the first surface, and at least one side surface (216) extending between the first surface and the second surface. The spacer layer (202) includes a first surface coupled to the OLED emitter and a second surface coupled to the first surface of each of the plurality of tapered reflectors. Light emitted from the OLED passes through the spacer layer and into the plurality of tapered reflectors. The at least one side surface of each of the plurality of tapered reflectors includes a slope to redirect light into an escape cone and out of the second surface of the corresponding tapered reflector.

    LIGHT-COUPLING APPARATUS AND METHODS FOR LIGHT-DIFFUSING OPTICAL FIBERS
    4.
    发明申请
    LIGHT-COUPLING APPARATUS AND METHODS FOR LIGHT-DIFFUSING OPTICAL FIBERS 有权
    光耦合装置和用于光扩散光纤的方法

    公开(公告)号:US20150055915A1

    公开(公告)日:2015-02-26

    申请号:US13974580

    申请日:2013-08-23

    Abstract: Light-coupling apparatus and methods for light-diffusing optical fibers are disclosed. The light-coupling apparatus includes a light-diffusing fiber bundle having an end section made up of tightly packed cores by removing the claddings. The spaces between the cores are filled with a material having a refractive index equal to or less than that of the cores. A light-emitting diode light source can be butt-coupled to the bundled-core end of the light-diffusing fiber bundle or can be coupled thereto via a reflective concentrator. A method of forming a flat and smooth end on a cleaved fiber that has a rough end is also disclosed.

    Abstract translation: 公开了用于光漫射光纤的光耦合装置和方法。 光耦合装置包括通过去除包层而具有由紧密包装的芯构成的端部的光漫射纤维束。 芯之间的空间用折射率等于或小于芯的折射率的材料填充。 发光二极管光源可以对接耦合到光扩散光纤束的束芯端,或者可以通过反射聚光器与其耦合。 还公开了一种在具有粗糙端的切割纤维上形成平坦且光滑的端部的方法。

    LIGHT EXTRACTION APPARATUS AND OLED DISPLAYS

    公开(公告)号:US20210234131A1

    公开(公告)日:2021-07-29

    申请号:US15734788

    申请日:2018-06-06

    Abstract: A light extraction apparatus for an organic light-emitting diode (OLED) includes an OLED emitter (100), a plurality of tapered reflectors (210), and a spacer layer (202). Each tapered reflector includes a first surface (212), a second surface (214) opposite to the first surface and comprising a surface area larger than a surface area of the first surface, and at least one side surface (216) extending between the first surface and the second surface. The spacer layer (202) includes a first surface coupled to the OLED emitter and a second surface coupled to the first surface of each of the plurality of tapered reflectors. Light emitted from the OLED passes through the spacer layer and into the plurality of tapered reflectors. The at least one side surface of each of the plurality of tapered reflectors includes a slope to redirect light into an escape cone and out of the second surface of the corresponding tapered reflector.

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