Abstract: Electronic devices including a display layer and a cover layer including a foldable region are disclosed herein. The display layer and the cover layer are configured to be moved between a folded configuration and an unfolded configuration by bending the cover layer along the foldable region. Methods of making a cover layer for an electronic device are also disclosed.

Abstract: Electronic devices including a display layer and a cover layer including a foldable region are disclosed herein. The display layer and the cover layer are configured to be moved between a folded configuration and an unfolded configuration by bending the cover layer along the foldable region. Methods of making a cover layer for an electronic device are also disclosed.

Abstract: A strengthened foldable cover may include a cover member formed from a glass material. A hinge of the cover member defines a bend in the folded configuration of the foldable cover. One or more portions of the cover member that define the hinge may be strengthened differently than other portions of the cover member in order to facilitate bending of the cover member while providing damage resistance and minimizing distortion of graphical output from the display assembly.

Abstract: A strengthened foldable cover may include a cover member formed from a glass material. A hinge of the cover member defines a bend in the folded configuration of the foldable cover. One or more portions of the cover member that define the hinge may be strengthened differently than other portions of the cover member in order to facilitate bending of the cover member while providing damage resistance and minimizing distortion of graphical output from the display assembly.

Abstract: A foldable electronic device may bend about a bend axis. The device may include a flexible display panel and a display cover layer overlapping the flexible display panel. The flexible display panel and the display cover layer may bend along the bend axis as the device is folded. The display cover layer may be formed from first and second glass layers. The first glass layer may have first and second planar portions joined by a third portion that bends about the bend axis. The second glass layer may have third and fourth portions that respectively overlap the first and second planar portions and that are separated by a gap overlapping the bend axis. The second glass layer may have a higher modulus of elasticity, lower compressive stress, and/or a greater thickness than the first glass layer to provide additional display protection.

Abstract: A foldable electronic device may include a flexible display panel and a display cover layer that fold along a bend axis. The display cover layer may be formed from one or more glass layers. For example, a thin glass layer may form an outer surface of the display and may extend across the bend axis. The glass layer may exhibit a crack initiation load of at least 10 kgf to help prevent sharp objects from causing median cracks in the cover layer that might lead to failure. An ion exchange process may be used to impart regions of compressive stress in the glass and to further increase the force required to cause failure in the cover layer. To allow the glass to bend, the glass may have a bendable region with a thickness of 200 microns or less.

Abstract: A glass sheet having asymmetric chemical strengthening is disclosed and described. The examples described herein are directed to a cover glass for an electronic device and other glass components that may be used as enclosure elements or may form an enclosure. Within the glass component, localized compressive stress regions may be formed on opposite sides of the glass component, which may help arrest or redirect propagating cracks or defects in the glass. The opposing compressive stress regions may also help maintain the overall flatness of the component while increasing strength and/or impact resistance of the component.

Abstract: An optical lens includes a first transparent portion, a second transparent portion, and an opaque metal barrier separating the first transparent portion from the second transparent portion. The opaque metal barrier is bonded directly to the first transparent portion and the second transparent portion via aluminum-oxide bonds. The optical lens can include a transition zone between the opaque metal barrier and adjacent transparent portions. The transition zone can include the aluminum-oxide bonds and have a thickness.

Abstract: A shaft for a gas turbine engine includes a composite tube including a plurality of grooves extending along a longitudinal axis of the shaft. The shaft has a load fuse mechanism that has at least one metallic coupling that has a plurality of splines extending along the longitudinal axis of the shaft. Each of the plurality of splines is received within and engages with a corresponding groove of the composite tube to form a preloaded interference fit between the load fuse mechanism and the composite tube. The at least one metallic coupling includes a first portion defining a first diameter and a second portion extending from the first portion along the longitudinal axis. The second portion defines a second diameter that is greater than the first diameter. The second portion has a smooth annular outer surface devoid of any splines.

Abstract: A hybrid transmission component for a gas turbine engine has a composite body, and a metallic coupling joined with the composite body and defining a longitudinal axis along its length. The metallic coupling includes a plurality of spline teeth extending from a circumferential surface and angularly separated from each other about the longitudinal axis. Each spline tooth from the plurality of spline teeth extends radially from a root to a tip with respect to the longitudinal axis and extends axially from the leading end along the longitudinal axis. The leading end of each spline tooth includes a curved surface extending from the root and a planar surface extending from the curved surface to the tip. The planar surface is inclined obliquely to the longitudinal axis by a rake angle.

Abstract: A head-mountable device can facilitate comfort, guidance, and alertness of the user by inducing the user to blink, move, or adjust the user's eyes. Such actions can be encouraged in response to detections of the user's movement, physical features of the environment, and/or the conditions of the eye, including moisture of the eye. The actions can be performed by an output of the head-mountable device, such as a display, a speaker, a haptic feedback device, a blower, and/or another output device that interacts with the user.

Abstract: A glass sheet having asymmetric chemical strengthening is disclosed and described. The examples described herein are directed to a cover glass for an electronic device and other glass components that may be used as enclosure elements or may form an enclosure. Within the glass component, localized compressive stress regions may be formed on opposite sides of the glass component, which may help arrest or redirect propagating cracks or defects in the glass. The opposing compressive stress regions may also help maintain the overall flatness of the component while increasing strength and/or impact resistance of the component.

Abstract: An electronic device display may have an inner layer with a pixel array for displaying images and an outer layer with an array of light modulator cells operable in transparent and light-blocking modes. Force sensor and touch sensor circuitry may be used to gather user input such as information on finger pressure or stylus input applied to a location on the display. A block of the cells may be placed into a transparent mode to form a transparent window based on information from the sensor circuitry. Images on the pixel array may be viewed through the window. In another mode of operation, images can be displayed by adjusting the cells of the light modulator layer and backlight illumination may be provided by the pixel array. A camera and a flash or other optical components may be overlapped by an adjustable shutter.

Abstract: An electronic device can include a housing defining an aperture, and an electromagnetic radiation emitter and an electromagnetic radiation detector disposed in the housing. An optical component can be disposed in the aperture and can include a first region of a first material having a first index of refraction, the first region aligned with the electromagnetic radiation emitter, a second region of the first material, the second region aligned with the electromagnetic radiation detector, and a bulk region surrounding a periphery of the first region and a periphery of the second region, the bulk region including a second material having a second index of refraction that is lower than the first index of refraction.

Abstract: Electronic devices including a display layer and a cover layer including a foldable region are disclosed herein. The display layer and the cover layer are configured to be moved between a folded configuration and an unfolded configuration by bending the cover layer along the foldable region. Methods of making a cover layer for an electronic device are also disclosed.

Abstract: A shaft for a gas turbine engine includes a composite tube including a plurality of grooves extending along a longitudinal axis of the shaft. The shaft has a load fuse mechanism that has at least one metallic coupling that has a plurality of splines extending along the longitudinal axis of the shaft. Each of the plurality of splines is received within and engages with a corresponding groove of the composite tube to form a preloaded interference fit between the load fuse mechanism and the composite tube. The at least one metallic coupling includes a first portion defining a first diameter and a second portion extending from the first portion along the longitudinal axis. The second portion defines a second diameter that is greater than the first diameter. The second portion has a smooth annular outer surface devoid of any splines.

Abstract: An electronic device can include a housing defining an aperture, and an electromagnetic radiation emitter and an electromagnetic radiation detector disposed in the housing. An optical component can be disposed in the aperture and can include a first region of a first material having a first index of refraction, the first region aligned with the electromagnetic radiation emitter, a second region of the first material, the second region aligned with the electromagnetic radiation detector, and a bulk region surrounding a periphery of the first region and a periphery of the second region, the bulk region including a second material having a second index of refraction that is lower than the first index of refraction.

Abstract: Electronic devices including a display layer and a cover layer including a foldable region are disclosed herein. The display layer and the cover layer are configured to be moved between a folded configuration and an unfolded configuration by bending the cover layer along the foldable region. Methods of making a cover layer for an electronic device are also disclosed.

Abstract: A system such as a vehicle may have adjustable structures such as adjustable windows. Adjustable windows may have adjustable layers such as adjustable tint layers, adjustable reflectivity layers, and adjustable haze layers. Adjustable window layers may be incorporated into a window with one or more transparent structural layers such as a pair of glass window layers. Adjustable components such as adjustable reflectivity layers, adjustable haze layers, and adjustable tint layers may be interposed between the pair of glass window layers. Fixed partially reflective mirrors, fixed tint layers, and/or fixed haze layers may be used in place of adjustable tint, haze, and reflectivity layers and/or may be incorporated into windows in addition to adjustable tint, haze, and reflectivity layers.

Abstract: An electronic device may have a display and may be configured to fold about a bend axis that overlaps the display. The display may have a display cover layer having first, second, and third portions that are joined side-by-side. The second portion may have a strip shape that extends along the bend axis and may be configured to bend as the first and third portions are folded towards each other. The second portion may be formed from a different material than the first and third portions to facilitate bending. The second portion may also be characterized by a compressive stress layer that is shallower than compressive stress layers on the first and third portions.