Displays with Redundant Bent Signal Lines and Neutral Plane Adjustment Layers

    公开(公告)号:US20180374912A1

    公开(公告)日:2018-12-27

    申请号:US15994858

    申请日:2018-05-31

    申请人: Apple Inc.

    IPC分类号: H01L27/32 G06F3/041 H01L51/00

    摘要: A display may have an array of organic light-emitting diodes that form an active area on a flexible substrate. Display driver circuitry such as a display driver integrated circuit may be coupled to an inactive area of the flexible substrate. Metal traces may extend across a bent region of the flexible substrate between the active area and inactive area. Metal traces may have zigzag shapes to reduce stress when bending. Adjacent pairs of parallel segments in the metal traces may be shorted together by a bridging segment that extends perpendicular to the two parallel segments. The bridging segment may be offset from corners to avoid clusters of stress zones in the metal trace. Neutral plane adjustment layers in the bent region may include a metal layer to help counteract the bending force of the flexible substrate and the relaxation of an upper polymer coating.

    Electronic Devices With Displays
    6.
    发明申请

    公开(公告)号:US20170294495A1

    公开(公告)日:2017-10-12

    申请号:US15251612

    申请日:2016-08-30

    申请人: Apple Inc.

    IPC分类号: H01L27/32 G06F3/041

    摘要: An electronic device may have a flexible portion that allows the device to be folded. The device may have a flexible display. The flexible display may have edge portions that are joined along a flexible middle portion. The flexible middle portion may overlap a bend axis and may be bent about the bend axis. Flexibility enhancement regions may be formed in a backing layer, polarizer layer, organic-light-emitting display layer, and other display layers to enhance flexibility for the middle portion. The device may have a display with a flexible tail that is bent about a bend axis. Metal trace on the flexible display may include metal trace strips that serve as power lines. Flexibility enhancement regions such as slot-shaped openings or other openings may be formed in the metal trace strips to enhance flexibility.

    Flexible circuit substrate with temporary supports and equalized lateral expansion

    公开(公告)号:US10199323B2

    公开(公告)日:2019-02-05

    申请号:US15415496

    申请日:2017-01-25

    申请人: Apple Inc.

    摘要: An item may have a flexible support structure and may include a flexible component. The flexible component may have electrical components mounted on component mounting regions in a flexible circuit substrate. The component mounting regions may be interconnected by serpentine interconnect paths or other flexible interconnect paths. The flexible circuit substrate and component mounting regions may extend along a longitudinal axis of the flexible component or may form a two-dimensional array. Two-dimensional mesh-shaped flexible circuit substrates may be used in forming displays. The mesh-shaped flexible circuit substrates may be auxetic substrates that widen when stretched (e.g., structures with a negative Poisson's ratio that become thicker perpendicular to applied force when stretched) and that therefore reduce image distortion. Temporary tethers may help hold flexible circuit substrates together until intentionally broken following assembly of a flexible component into the flexible support structure.