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    Light-Emitting Device
    1.
    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.

    Organic Light-Emitting Diode Display With Reduced Lateral Leakage
    2.
    发明申请
    Organic Light-Emitting Diode Display With Reduced Lateral Leakage 有权
    有机发光二极管显示屏具有减少的侧向泄漏

    公开(公告)号：US20150379938A1

    公开(公告)日：2015-12-31

    申请号：US14747719

    申请日：2015-06-23

    Applicant: Apple Inc.

    Inventor： Jae Won Choi ,  John Z. Zhong ,  Kwang Ohk Cheon ,  Shih Chang Chang ,  Young Bae Park

    IPC: G09G3/32 ,  G09G5/02

    CPC classification number: G09G3/3291 ,  G09G3/3233 ,  G09G2300/0426 ,  G09G2300/0861 ,  G09G2310/0251 ,  G09G2320/0209 ,  G09G2320/043 ,  H01L27/3276 ,  H01L51/5088

    Abstract: A display may have an array of pixels. Each pixel may have a light-emitting diode that emits light under control of a drive transistor. The organic light-emitting diodes may have a common cathode layer, a common electron layer, individual red, green, and blue emissive layers, a common hole layer, and individual anodes. The hole layer may have a hole injection layer stacked with a hole transport layer. Pixel circuits for controlling the diodes may be formed from a layer of thin-film transistor circuitry on a substrate. A planarization layer may cover the thin-film transistor layer. Lateral leakage current between adjacent diodes can be blocked by shorting the common hole layer to a metal line such as a bias electrode that is separate from the anodes. The metal line may be laterally interposed between adjacent pixels and may be formed on the planarization layer or embedded within the planarization layer.

    Abstract translation: 显示器可以具有像素阵列。 每个像素可以具有在驱动晶体管的控制下发光的发光二极管。 有机发光二极管可以具有公共阴极层，公共电子层，单独的红色，绿色和蓝色发射层，公共空穴层和单个阳极。 空穴层可以具有层叠有空穴传输层的空穴注入层。 用于控制二极管的像素电路可以由衬底上的薄膜晶体管电路层形成。 平坦化层可以覆盖薄膜晶体管层。 可以通过将公共空穴层短路到诸如与阳极分离的偏置电极的金属线来阻止相邻二极管之间的横向漏电流。 金属线可以横向插入相邻像素之间，并且可以形成在平坦化层上或嵌入在平坦化层内。

    Organic Light-Emitting Diode Display With Structured Electrode
    4.
    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 reduced lateral leakage
    5.
    发明授权
    Organic light-emitting diode display with reduced lateral leakage 有权
    有机发光二极管显示屏具有减少的横向泄漏

    公开(公告)号：US09542892B2

    公开(公告)日：2017-01-10

    申请号：US14747719

    申请日：2015-06-23

    Applicant: Apple Inc.

    Inventor： Jae Won Choi ,  John Z. Zhong ,  Kwang Ohk Cheon ,  Shih Chang Chang ,  Young Bae Park

    IPC: G09G3/32 ,  H01L51/50 ,  H01L27/32

    CPC classification number: G09G3/3291 ,  G09G3/3233 ,  G09G2300/0426 ,  G09G2300/0861 ,  G09G2310/0251 ,  G09G2320/0209 ,  G09G2320/043 ,  H01L27/3276 ,  H01L51/5088

    Abstract: A display may have an array of pixels. Each pixel may have a light-emitting diode that emits light under control of a drive transistor. The organic light-emitting diodes may have a common cathode layer, a common electron layer, individual red, green, and blue emissive layers, a common hole layer, and individual anodes. The hole layer may have a hole injection layer stacked with a hole transport layer. Pixel circuits for controlling the diodes may be formed from a layer of thin-film transistor circuitry on a substrate. A planarization layer may cover the thin-film transistor layer. Lateral leakage current between adjacent diodes can be blocked by shorting the common hole layer to a metal line such as a bias electrode that is separate from the anodes. The metal line may be laterally interposed between adjacent pixels and may be formed on the planarization layer or embedded within the planarization layer.

    Abstract translation: 显示器可以具有像素阵列。 每个像素可以具有在驱动晶体管的控制下发光的发光二极管。 有机发光二极管可以具有公共阴极层，公共电子层，单独的红色，绿色和蓝色发射层，公共空穴层和单个阳极。 空穴层可以具有层叠有空穴传输层的空穴注入层。 用于控制二极管的像素电路可以由衬底上的薄膜晶体管电路层形成。 平坦化层可以覆盖薄膜晶体管层。 可以通过将公共空穴层短路到诸如与阳极分离的偏置电极的金属线来阻止相邻二极管之间的横向漏电流。 金属线可以横向插入相邻像素之间，并且可以形成在平坦化层上或嵌入在平坦化层内。

    Organic light-emitting diode display with structured electrode
    6.
    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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