Displays with Ramped Light Guide Layers and Multidirectional Light-Emitting Diodes

    公开(公告)号:US20170371087A1

    公开(公告)日:2017-12-28

    申请号:US15260904

    申请日:2016-09-09

    Applicant: Apple Inc.

    Abstract: A display such as a liquid crystal display may have an array of pixels that is illuminated using backlight illumination from a backlight. The backlight may have a light guide plate that distributes light from light-emitting diodes across the display. The light-emitting diodes may be overlapped by the light guide plate and may emit light into portions of the light guide plate that have ramped profiles. Light-emitting diodes for the backlight may have multiple light-emitting diode dies mounted on common package substrates. Reflective walls may be formed between the light-emitting diode dies on a substrate. Phosphor may cover the dies. The light-emitting diodes may contain four light-emitting diode dies that emit light in four different directions. Two or more of the dies may emit light of different colors. Light may be emitted into the corners of rectangular light distribution regions of a light guide plate.

    Display backlight with adhesive attachment layers

    公开(公告)号:US09835793B2

    公开(公告)日:2017-12-05

    申请号:US14716448

    申请日:2015-05-19

    Applicant: Apple Inc.

    CPC classification number: G02B6/0091 G02B6/0068 G02B6/0073 G02B6/0083

    Abstract: A display may have a backlight. The display backlight may have a light guide plate. An array of light-emitting diodes may emit light into the edge of the light guide plate. The array of light-emitting diodes may be mounted to a flexible printed circuit. A layer of adhesive tape may attach the light guide plate to the flexible printed circuit. The tape layer may have upper and lower adhesive layers on a carrier film. The carrier film may be formed from a metal-coated polymer layer, a high-low dielectric stack, a metal foil, or other reflective or non-reflective structures. A stiffener may be provided to facilitate handling of the adhesive tape.

Patent Agency Ranking