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    Organic Light-Emitting Diode Display with Single Anti-Node Optical Cavities
    5.
    发明申请
    Organic Light-Emitting Diode Display with Single Anti-Node Optical Cavities 有权

    公开(公告)号：US20220271254A1

    公开(公告)日：2022-08-25

    申请号：US17569384

    申请日：2022-01-05

    Applicant: Apple Inc.

    Inventor： Niva A. Ran ,  Michelle C. Sherrott ,  Steven J. Brewer ,  Ping Kuen Daniel Tsang ,  KiBeom Kim ,  Hui Lu ,  Siddharth Harikrishna Mohan

    IPC: H01L51/52

    Abstract: An electronic device may have a display such as an organic light-emitting diode (OLED) display. The OLED display may have an array of OLED pixels that each have OLED layers interposed between a cathode and an anode. The pixels may be microcavity OLED pixels having optical cavities. The optical cavities may be defined by a partially transparent cathode layer and a reflective anode structure. The distance between the partially transparent cathode layer and the reflective anode structure for a pixel may be selected such that light at the wavelength emitted by the pixel forms a standing wave between the anode and the cathode. The standing wave may have only one anti-node and the emissive layer for the pixel may be aligned with that one anti-node. To mitigate short circuits, a roughness reduction layer and/or short-circuit-reducing layer having a high sheet resistance may be formed between the anode the OLED layers.

    Light-Emitting Device
    6.
    发明申请
    Light-Emitting Device 审中-公开

    公开(公告)号：US20180374423A1

    公开(公告)日：2018-12-27

    申请号：US15747097

    申请日：2016-06-23

    Applicant: Apple Inc.

    Inventor： KiBeom Kim ,  Kwang Ohk Cheon ,  Rui Liu ,  Cheng Chen

    IPC: G09G3/3233 ,  H01L51/52 ,  H01L27/32

    CPC classification number: H01L51/5215 ,  H01L27/3209 ,  H01L51/5209 ,  H01L51/5212 ,  H01L51/5225 ,  H01L51/5228 ,  H01L51/5234 ,  H01L2251/5323 ,  H01L2251/5361 ,  H01L2251/558

    Abstract: An organic light-emitting diode may have transparent electrodes. An organic emissive layer may be interposed between the electrodes. The emissive layer may emit light in response to current injected from the electrodes. The organic light-emitting diode electrodes may cover an electrode area. The electrode area may be square or may have other shapes. To enhance brightness uniformity, portions of the electrodes in a peripheral region (H1, H2) of the electrode area may have higher sheet resistances than a central portion of the electrode area. The electrode area may be square and may have four corners. The higher sheet resistances may be associated with regions of the electrode area adjacent to the corners. Elevated sheet resistances may be produced by forming the electrodes with different thicknesses in different areas or by providing supplemental conductive structures (104) in selected areas of the electrode area.

    Electronic device with display apertures
    7.
    发明授权
    Electronic device with display apertures 有权

    公开(公告)号：US11068089B1

    公开(公告)日：2021-07-20

    申请号：US15675566

    申请日：2017-08-11

    Applicant: Apple Inc.

    Inventor： KiBeom Kim ,  Cheng Chen ,  Meng-Huan Ho ,  Rui Liu

    IPC: G06F3/041 ,  G06F21/32 ,  G06K9/00

    Abstract: An electronic device may have a display such as an organic light-emitting diode display. The display may have an active area formed from an array of pixels with light-emitting diodes. The light-emitting diodes may be formed from an organic layer containing emissive material between an anode layer and a cathode layer. Apertures may be formed in the active area of the display. The apertures may allow light to pass to light-sensitive components under the display. A polarizer may overlap the display and may have a bleached area that forms part of a camera aperture. Light may pass through the camera aperture to a camera under the display. The display may have an array of apertures that allow light to pass to a light-sensitive fingerprint sensor under the display.

    Organic Light-Emitting Diode Display With Structured Electrode
    9.
    发明申请
    Organic Light-Emitting Diode Display With Structured Electrode 审中-公开

    公开(公告)号：US20200035951A1

    公开(公告)日：2020-01-30

    申请号：US16521837

    申请日：2019-07-25

    Applicant: Apple Inc.

    Inventor： Kwang Ohk Cheon ,  Aleksandr N. Polyakov ,  Chen-Yue Li ,  Chuan-Jung Lin ,  KiBeom Kim ,  Nai-Chih Kao ,  Rui Liu ,  Wendi Chang

    IPC: H01L51/52 ,  H01L51/50 ,  H01L51/56

    Abstract: A display may have an array of organic light-emitting diode (OLED) pixels that each have OLED layers interposed between a cathode and an anode. Voltage may be applied to the anode of each pixel to control the magnitude of emitted light. The conductivity of the OLED layers may allow leakage current to pass between neighboring anodes in the display. To reduce leakage current and cross-talk, the thickness of at least one of the OLED layers may be reduced. To maintain the optical cavity of the pixels, transparent optical spacer structures may be inserted. Alternatively, the thickness of the anodes can be increased. To accommodate a common prime layer within the OLED layers, the optical spacers or anodes may be separately patterned to have different thicknesses. Grating structures and photonic crystal structures may be embedded as part of the optical spacers to help control emission at selected viewing angles.

    Organic light-emitting diode display with structured electrode
    10.
    发明授权
    Organic light-emitting diode display with structured electrode 有权

    公开(公告)号：US11211587B2

    公开(公告)日：2021-12-28

    申请号：US16521837

    申请日：2019-07-25

    Applicant: Apple Inc.

    Inventor： Kwang Ohk Cheon ,  Aleksandr N. Polyakov ,  Chen-Yue Li ,  Chuan-Jung Lin ,  KiBeom Kim ,  Nai-Chih Kao ,  Rui Liu ,  Wendi Chang

    IPC: H01L51/52 ,  H01L51/50 ,  H01L51/56 ,  H01L27/32

    Abstract: A display may have an array of organic light-emitting diode (OLED) pixels that each have OLED layers interposed between a cathode and an anode. Voltage may be applied to the anode of each pixel to control the magnitude of emitted light. The conductivity of the OLED layers may allow leakage current to pass between neighboring anodes in the display. To reduce leakage current and cross-talk, the thickness of at least one of the OLED layers may be reduced. To maintain the optical cavity of the pixels, transparent optical spacer structures may be inserted. Alternatively, the thickness of the anodes can be increased. To accommodate a common prime layer within the OLED layers, the optical spacers or anodes may be separately patterned to have different thicknesses. Grating structures and photonic crystal structures may be embedded as part of the optical spacers to help control emission at selected viewing angles.

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