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    Non-Blocked Phosphorescent OLEDs
    31.
    发明申请
    Non-Blocked Phosphorescent OLEDs 审中-公开
    非阻塞磷光OLED

    公开(公告)号：US20140231768A1

    公开(公告)日：2014-08-21

    申请号：US14174456

    申请日：2014-02-06

    Applicant: Universal Display Corporation

    Inventor： Vadim Adamovich ,  Michael Stuart Weaver ,  Raymond Kwong

    IPC: H01L51/50

    CPC classification number: H01L51/5016 ,  H01L51/0052 ,  H01L51/0085 ,  H01L51/5048 ,  H01L51/5056 ,  H01L51/5072 ,  Y10S428/917 ,  Y10T428/24942

    Abstract: An organic light emitting diode (OLED) architecture in which efficient operation is achieved without requiring a blocking layer by locating the recombination zone close to the hole transport side of the emissive layer. Aryl-based hosts and Ir-based dopants with suitable concentrations result in an efficient phosphorescent OLED structure. Previously, blocking layer utilization in phosphorescent OLED architectures was considered essential to avoid exciton and hole leakage from the emissive layer, and thus keep the recombination zone inside the emissive layer to provide high device efficiency and a pure emission spectrum.

    Abstract translation: 一种有机发光二极管（OLED）结构，其中通过将复合区定位在靠近发射层的空穴传输侧的方式实现高效的操作而不需要阻挡层。 基于芳基的主体和具有合适浓度的Ir基掺杂剂导致有效的磷光OLED结构。 以前，磷光OLED结构中的阻挡层利用被认为是避免发射层发生激子和空穴泄漏的关键因素，因此保持发射层内部的复合区域，以提供高的器件效率和纯发射光谱。

    Display correction scheme using an under-display camera
    32.
    发明授权
    Display correction scheme using an under-display camera 有权

    公开(公告)号：US12211414B2

    公开(公告)日：2025-01-28

    申请号：US17382412

    申请日：2021-07-22

    Applicant: Universal Display Corporation

    Inventor： Michael Hack ,  Michael Stuart Weaver

    IPC: G09G3/20 ,  G09G3/3208

    Abstract: Embodiments of the disclosed subject matter provide a device that includes a full color display. A camera may be disposed below the full color display. A controller may modify a video signal applied to one or more sub-pixels of the full color display based on a predicted degradation of the one or more sub-pixels, such that the modification is updated by the controller based on luminance data for the one or more subpixels acquired by the camera.

    Means to reduce OLED transient response
    33.
    发明授权
    Means to reduce OLED transient response 有权

    公开(公告)号：US12183280B2

    公开(公告)日：2024-12-31

    申请号：US17845125

    申请日：2022-06-21

    Applicant: Universal Display Corporation

    Inventor： Michael Hack ,  Michael Stuart Weaver ,  Nicholas J. Thompson ,  Michael O'Connor

    IPC: G09G3/3233

    Abstract: Embodiments of the disclosed subject matter provide a device that includes an organic light emitting device (OLED), and a drive circuit to control the operation of the OLED, comprising a response time accelerator thin film transistor (TFT) configured to short or reverse bias the OLED for a predetermined period of time during a frame time. Other embodiments include an OLED having a plurality of sub-pixels, where one or more of sub-pixels configured to emit light of at least a first color comprises a first emissive area and a second emissive area that are independently controllable, where the first emissive area is larger than the second emissive area. The controller is configured to control the second emissive area to have (i) a higher brightness, and/or (ii) a higher current density than the first emissive area for a first sub-pixel luminance level that is less than a maximum luminance.

    Non-blocked phosphorescent OLEDs
    37.
    发明授权
    Non-blocked phosphorescent OLEDs 有权

    公开(公告)号：US11594697B2

    公开(公告)日：2023-02-28

    申请号：US17145710

    申请日：2021-01-11

    Applicant: Universal Display Corporation

    Inventor： Vadim Adamovich ,  Michael Stuart Weaver ,  Raymond Kwong

    IPC: H01L51/50 ,  H01L51/00

    Abstract: An organic light emitting diode (OLED) architecture in which efficient operation is achieved without requiring a blocking layer by locating the recombination zone close to the hole transport side of the emissive layer. Aryl-based hosts and Ir-based dopants with suitable concentrations result in an efficient phosphorescent OLED structure. Previously, blocking layer utilization in phosphorescent OLED architectures was considered essential to avoid exciton and hole leakage from the emissive layer, and thus keep the recombination zone inside the emissive layer to provide high device efficiency and a pure emission spectrum.

    Three stack hybrid white OLED for enhanced efficiency and lifetime
    38.
    发明授权
    Three stack hybrid white OLED for enhanced efficiency and lifetime 有权

    公开(公告)号：US11177452B2

    公开(公告)日：2021-11-16

    申请号：US15401258

    申请日：2017-01-09

    Applicant: Universal Display Corporation

    Inventor： Michael Stuart Weaver ,  Julia J. Brown

    IPC: H01L29/08 ,  H01L35/24 ,  H01L51/00 ,  H01L51/50 ,  H01L51/52 ,  H01L27/32

    Abstract: OLEDs containing a stacked hybrid architecture including a phosphorescent organic emissive unit and two fluorescent organic emissive units are disclosed. The stacked hybrid architecture includes a plurality of electrodes and a hybrid emissive stacked disposed between at least two of the electrodes. The stack contains at least three emissive units and at least two charge generation layers. At least one of the three emissive units is a phosphorescent organic emissive unit and at least two of the three emissive units are fluorescent organic emissive units. More specifically, the two fluorescent organic emissive units may be blue organic emissive units that emit light from the same or different color regions.

    Organic electroluminescent devices containing a near-infrared down-conversion layer
    39.
    发明授权
    Organic electroluminescent devices containing a near-infrared down-conversion layer 有权

    公开(公告)号：US11139444B2

    公开(公告)日：2021-10-05

    申请号：US16217104

    申请日：2018-12-12

    Applicant: Universal Display Corporation

    Inventor： Eric A. Margulies ,  Nicholas J. Thompson ,  Michael Stuart Weaver

    IPC: H01L51/50 ,  H01L27/32

    Abstract: Embodiments of the disclosed subject matter provide a device having a substrate, at least one organic light-emitting layer disposed over the substrate, and at least one down-conversion layer. The at least one down-conversion layer may generate the NIR emission by absorbing at least a portion of the light emitted by the at least one organic light emitting layer, and re-emitting light at a longer NIR wavelength or range of wavelengths having a peak NIR emission that may be greater than 700 nm, greater than 750 nm, or greater than 800 nm. An out-of-plane optical density of the at least one down-conversion layer may be less than 0.1 for all wavelengths of light in a range from 400 nm to 600 nm.

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