FIELD

This relates generally to electronic devices, and, more particularly, to electronic devices with displays.

BACKGROUND

Electronic devices such as cellular telephones, tablet computers, and other electronic equipment may include displays for presenting images to a user.

If care is not taken, electronic devices with displays may not have a desired appearance or may be difficult to use satisfactorily. For example, displays may be bulky and unattractive or may distort images.

SUMMARY

An electronic device may have a display for displaying images. A display cover layer may overlap the display. Portions of the surface of the display and cover layer may have curved profiles. For example, the edge of the display may be bend and the cover layer may have corresponding curved edge profiles.

The display may include a flexible substrate and may have bent edge portions protruding from a central region. For example, the display may be an organic light-emitting diode display formed on a flexible substrate. The organic light-emitting diode display may have elongated protrusions that run along the edges of a rectangular central region. The protrusions may be bent along axes that run parallel to the peripheral edges of the display to form curved display edges. Display structures in the device may cover a front face, rear face, and/or sidewalls portions of a device.

Gaps may be formed between regions of display pixels on a common substrate and gaps may be formed between separate display panels in the electronic device. 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 display pixels that are adjacent to the input surface. The image transport layer may also have an output surface on which the image is displayed after being transported through the image transport layer while being laterally confined within the image transport layer.

The output surface of the image transport layer 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 configured to form multiple input surfaces separated by gaps. These image transport layers may be used to merge images from sets of pixels that are separated by gaps so that a unitary merged image is displayed on the output surface.

Touch sensor circuitry such as two-dimensional capacitive touch sensor circuitry may be incorporated into the displays. For example, a two-dimensional touch sensor formed on a separate touch sensor panel may overlap an array of display pixels. If desired, a two-dimensional touch sensor may be formed from circuitry on the same panel as the display pixels of the display.

