Abstract: An electronic device may have a display panel for displaying images. A display cover layer having curved portions may overlap the display panel. An image transport layer having an input surface that receives light from the display panel may convey the light from the input surface to an output surface adjacent to an inner surface of the display cover layer. The image transport layer may include fibers with different lengths to form a region of the output surface with a curved profile. Each fiber in the coherent fiber bundle may have a respective output face. The output face of each fiber in the curved edge region of the image transport layer may be parallel to the display panel or may be angled towards the center of the image transport layer. Image distortion control circuitry may modify image data to control the perceived distortion of the display.

Abstract: An electronic device may have a display overlapped by a cover layer. Portions of the surface of the display and cover layer may have curved profiles. The display may include a flexible substrate and may have bent edge portions protruding from a central region. Gaps may be formed between regions of pixels on a common substrate or between separate display panels. An image transport layer formed from a coherent fiber bundle or a layer of Anderson localization material configured to exhibit two-dimensional transverse Anderson localization of light may have an input surface that receives an image from adjacent display pixels and an output surface on which the image is displayed. The output surface may have a curved profile and may exhibit compound curvature. The input surface may have a profile with curved portions or other shapes. Image transport layers can be used to cover gaps between sets of pixels.

Abstract: A plurality of fibers may be included in an electronic device display to allow the display to have a curved output surface. Each fiber may guide light from one or more display pixels on the display panel to a display output surface. The fibers may be bent, allowing light from the display pixels to be displayed on a three-dimensional display output surface of any desired shape. The fibers may be formed from a high refractive index core surrounded by a cladding. The fibers may be formed from an activated photoactive material. The fibers may cover the entire display panel, the periphery of the display panel, or the corners of the display panel. The display panel may have one or more bends. Polarizing fibers may be used to both guide light from the display panel and serve as a linear polarizer for the display.

Abstract: Display structures for controlling viewing angle color shift are described. In various embodiments, polarization sensitive diffusers, independent controlled cathode thicknesses, filtermasks, touch detection layers, and color filters are described.

Abstract: A light guiding layer may be incorporated into an electronic device with multiple displays to create a seamless display surface between the adjacent displays. The light guiding layer may have a first portion that overlaps the active area of a first display panel, a second portion that overlaps the active area of a second, adjacent display panel, and a third portion that overlaps the inactive areas of the first and second display panels. The light guiding layer may redirect light from the active area of each display panel to the region above the inactive areas of the display panels where it is emitted towards the viewer. The light guiding layer therefore effectively hides the border between the two display panels by emitting light in that region. The light guiding layer may include light leakage promotion structures to ensure light is emitted in the border region.

Abstract: Display structures for controlling viewing angle color shift are described. In various embodiments, polarization sensitive diffusers, independent controlled cathode thicknesses, filtermasks, and color filters are described.

Abstract: An organic light-emitting diode display may have thin-film transistor circuitry formed on a substrate. The substrate may have rounded corners, a first tail portion along a lower edge, and a second tail portion along an additional edge. A first plurality of signal paths for the display may be routed to the first tail portion and a second plurality of signal paths for the display may be routed to the second tail portion. The second tail portion may be formed within a pixel-free notched region of the substrate. One or more data lines, power supply lines, touch sensor signal lines, and other signal lines may be routed to the second tail portion. Each tail portion of the substrate may be planar or may be bent. Vertical data lines at the edge of the display may be coupled to data line extensions that are routed through the active area of the display.

Abstract: Display structures for controlling viewing angle color shift are described. In various embodiments, polarization sensitive diffusers, independent controlled cathode thicknesses, filtermasks, and color filters are described.

Abstract: Display structures for controlling viewing angle color shift are described. In various embodiments, polarization sensitive diffusers, independent controlled cathode thicknesses, filtermasks, touch detection layers, and color filters are described.

Abstract: Systems, methods, and computer-readable media for determining the temperature of a light-generating component of a display assembly using a voltage of the light-generating component are provided. In one embodiment, a method for operating an electronic device, which may include an external surface and a light-emitting diode operative to emit light for illuminating the external surface, may include detecting the forward voltage of the light-emitting diode, calculating the temperature of the light-emitting diode using the detected forward voltage of the light-emitting diode, and altering the performance of the electronic device based on the calculated temperature of the light-emitting diode. Additional embodiments are also provided.

Abstract: An electronic device may have a housing in which components are mounted that produce heat. The heat producing components may be light-emitting diodes mounted on a flexible printed circuit in a display backlight, may be integrated circuits, or may be other devices that generate heat during operation. A heat spreading layer such as a layer of graphite may be attached to the backlight unit or other structures in the electronic device using adhesive. The adhesive may be patterned to form an unbonded area between at least some of the backlight unit or other structures to which the heat spreading layer is being attached and the heat spreading layer. The heat spreading layer may be mounted adjacent to a housing structure such as a metal midplate member that is attached to housing walls in the housing.

Abstract: An electronic device may be provided with electrical components mounted in an electronic device housing. A display module may be attached to a display cover layer with a layer of adhesive to form a display module assembly. The display module assembly and a backlight unit assembly may together form a display that is mounted within an electronic device housing. A support structure that supports the display cover layer may be integrated with the backlight unit assembly. The support structure may have an upper surface to which the display cover layer is attached and a lower portion that is molded to a metal chassis that supports the backlight unit. The lower portion of the support structure may form a plastic chassis that surrounds the backlight unit. In this way, an integrated support structure may be used to support both the display module and the backlight unit.

Abstract: Systems, methods, and computer-readable media for determining the temperature of a light-generating component of a display assembly using a voltage of the light-generating component are provided. In one embodiment, a method for operating an electronic device, which may include an external surface and a light-emitting diode operative to emit light for illuminating the external surface, may include detecting the forward voltage of the light-emitting diode, calculating the temperature of the light-emitting diode using the detected forward voltage of the light-emitting diode, and altering the performance of the electronic device based on the calculated temperature of the light-emitting diode. Additional embodiments are also provided.

Abstract: A display may be provided with display layers and a backlight unit. The display layers may include a thin-film transistor layer having a ledge. The display layers may include an upper polarizer layer and a lower polarizer layer. A color filter layer, liquid crystal layer, and the thin-film transistor layer may be interposed between the upper and lower polarizer layers. A display cover layer may overlap the display layers to serve as a protective layer. Gap filler may be placed between the thin-film transistor ledge and the display cover layer to help prevent the ledge from bending upwards. Support structures may be placed between the thin-film transistor structures and the backlight unit to help prevent the ledge from bending downwards. The support structures may include an extended edge portion of the lower polarizer, a stiffener layer, gap filler, adhesive layers, and other supporting structures.

Abstract: Systems, methods, and computer-readable media for determining the temperature of a light-generating component of a display assembly using a voltage of the light-generating component are provided. In one embodiment, a method for operating an electronic device, which may include an external surface and a light-emitting diode operative to emit light for illuminating the external surface, may include detecting the forward voltage of the light-emitting diode, calculating the temperature of the light-emitting diode using the detected forward voltage of the light-emitting diode, and altering the performance of the electronic device based on the calculated temperature of the light-emitting diode. Additional embodiments are also provided.

Abstract: An electronic device may be provided with electrical components mounted in an electronic device housing. A display module may be attached to a display cover layer with a layer of adhesive to form a display module assembly. The display module assembly and a backlight unit assembly may together form a display that is mounted within an electronic device housing. A support structure that supports the display cover layer may be integrated with the backlight unit assembly. The support structure may have an upper surface to which the display cover layer is attached and a lower portion that is molded to a metal chassis that supports the backlight unit. The lower portion of the support structure may form a plastic chassis that surrounds the backlight unit. In this way, an integrated support structure may be used to support both the display module and the backlight unit.

Abstract: Systems, methods, and computer-readable media for determining the temperature of a light-generating component of a display assembly using a voltage of the light-generating component are provided. In one embodiment, a method for operating an electronic device, which may include an external surface and a light-emitting diode operative to emit light for illuminating the external surface, may include detecting the forward voltage of the light-emitting diode, calculating the temperature of the light-emitting diode using the detected forward voltage of the light-emitting diode, and altering the performance of the electronic device based on the calculated temperature of the light-emitting diode. Additional embodiments are also provided.

Abstract: An electronic device may have a housing in which components are mounted that produce heat. The heat producing components may be light-emitting diodes mounted on a flexible printed circuit in a display backlight, may be integrated circuits, or may be other devices that generate heat during operation. A heat spreading layer such as a layer of graphite may be attached to the backlight unit or other structures in the electronic device using adhesive. The adhesive may be patterned to form an unbonded area between at least some of the backlight unit or other structures to which the heat spreading layer is being attached and the heat spreading layer. The heat spreading layer may be mounted adjacent to a housing structure such as a metal midplate member that is attached to housing walls in the housing.