Abstract: A method for measuring an element concentration of a material includes: a material sample is irradiated with first electromagnetic waves; second electromagnetic waves radiated by the material sample are obtained under the action of the first electromagnetic waves; material property parameters of the material sample are determined by detecting the second electromagnetic waves; and an element concentration of the material sample is determined according to the material property parameters.

Abstract: An electronic device may have a hinge that allows the device to be flexed about a bend axis. A display may span the bend axis. The device may have a stainless steel and/or carbon fiber reinforced polymer layer with slots. The slots may overlap the bend axis. The slots may have at least one property that varies in a non-linear manner as a function of position on the layer. The device may include an adhesive layer with a cutout that overlaps the slots. An interface that defines the cutout may have a plurality of recesses with varying depths. A flexible printed circuit may be attached to an edge of the display panel. The display cover layer may overlap a bonding region between the flexible printed circuit and the edge of the display panel. A UV-curable gap filler may be interposed between the flexible printed circuit and the display cover layer.

Abstract: This document describes methods and systems for an antenna system integrated with side-keys of an electronic device. The antenna system enables antenna integration in a metal frame using a metal support structure and fastener(s) to route antenna signals around side-key modules embedded in the frame without encountering or causing interference with the side-key modules. By using these techniques to integrate antennas on areas around the side-key modules, more antennas can be implemented on the electronic device, leading to improved capabilities supporting additional wireless standards and a better user experience in terms of improved communication quality.

Abstract: The invention relates to a power tool that can be held with one hand for reversing, comprising: a casing having a grip part and a manipulation port; a driving device having a control member; the control member is capable of controlling an actuation direction of the driving device; a power source disposed below the driving device and capable of driving the driving device; a reversing assembly disposed at a periphery of the power source and having a reversing member; the reversing member controls the control member to generate changes of displacement, a driving direction of the driving device is changed by action of turning the reversing assembly that is away from the driving device, and there is an appropriate manipulating distance between the grip part and the manipulation port, so that a user is capable of manipulating by holding and reversing the power tool with one hand at a same position, and the control member is capable of being driven to perform reversing when the driving device is driven.

Abstract: An electronic device may have pixels that form an active area for a flexible display layer. An inactive area that is free of pixels may surround the active area. One or more edges of the flexible display layer may be bent around respective bend axes. The display layer may also have one or more unbent edges in which the inactive area and active area of the display have a planar shape. An image transport layer may have an input surface that receives the image and an output surface to which the image is transported. The image transport layer may be formed from a coherent fiber bundle or a layer of Anderson localization material. The coherent fiber bundle may have straight fibers that run parallel to each other in a vertical direction that is parallel to a surface normal of a central portion of the display layer.

Abstract: An electronic device may have a display with pixels configured to display an image. The pixels may be overlapped by a cover layer. The display may have peripheral edges with curved cross-sectional profiles. An inactive area in the display may be formed along a peripheral edge of the display or may be surrounded by the pixels. Electrical components such as optical components may be located in the inactive area. An image transport layer may be formed from a coherent fiber bundle or Anderson localization material. The image transport layer may overlap the pixels, may have an opening that overlaps portions of the inactive area, may have an output surface that overlap portions of the inactive area, and/or may convey light associated with optical components in the electronic device.

Abstract: This document describes methods and systems for an antenna system integrated with side-keys of an electronic device. The antenna system enables antenna integration in a metal frame using a metal support structure and fastener(s) to route antenna signals around side-key modules embedded in the frame without encountering or causing interference with the side-key modules. By using these techniques to integrate antennas on areas around the side-key modules, more antennas can be implemented on the electronic device, leading to improved capabilities supporting additional wireless standards and a better user experience in terms of improved communication quality.

Abstract: An electronic device may have a display with pixels configured to display an image. The pixels may be overlapped by a cover layer. The display may have peripheral edges with curved cross-sectional profiles. An inactive area in the display may be formed along a peripheral edge of the display or may be surrounded by the pixels. Electrical components such as optical components may be located in the inactive area. An image transport layer may be formed from a coherent fiber bundle or Anderson localization material. The image transport layer may overlap the pixels, may have an opening that overlaps portions of the inactive area, may have an output surface that overlap portions of the inactive area, and/or may convey light associated with optical components in the electronic device.

Abstract: A Dynamic Random Access Memory (DRAM) capacitor and a preparation method therefor are provided. The DRAM capacitor includes a dielectric layer, and the dielectric layer includes a high dielectric material layer, and low dielectric loss material layers provided on both side surfaces of the high dielectric material layer.

Abstract: A conductive ink may include an ultraviolet-curable resin and high-aspect-ratio conductors, such as nanowires or carbon nanotubes, dispersed in the ultraviolet-curable resin. The conductive ink may be fully curable at room temperature in under a minute with a curing depth of at least 100 microns, without heat, moisture, or a secondary curing step. The conductive ink may also have pigment and/or dyes within the ultraviolet-curable resin, and the conductive ink may be opaque at infrared wavelengths and transparent at ultraviolet wavelengths. The conductive ink may ground the cover glass of an electronic device display to a metal structure within the electronic device, such as a metal plate of the display, to prevent an accumulation of charge at the cover glass.

Abstract: An electronic device includes a housing that defines an aperture, and a display assembly positioned in the aperture. The display assembly can include a display layer having a first portion, and a second portion bending at least partially below the first portion. The first portion and the second portion can define a bend volume, and a potting material can be disposed in the bend volume, such that the potting material contacts the first portion and the second portion. An internal enclosure can be contoured to the display assembly.

Abstract: An electronic device may have a display overlapped by an image transport layer such as a coherent fiber bundle or layer of Anderson localization material. The image transport layer may have an input surface that receives an image from the display and a corresponding output surface to which the image is transported. The input surface and output surface may have different shapes. During fabrication of the image transport layer, molding techniques, grinding and polishing techniques, and other processes may be used to deform the image transport layer and the shape of the output surface. To help reduce ambient light reflections and stray light, light-absorbing structures may be incorporated into the image transport layer and other structures overlapping the display.

Abstract: An electronic device may have pixels. The pixels may form one or more displays. The displays may be flexible organic light-emitting diode displays or other displays. The electronic device may have first and second display layers that face away from each other and display images in different directions. Image transport layers may overlap the display layers and may have curved edges that overlap a sidewall portion of the electronic device. Image transport layers receive images at input surfaces and transport the received images to corresponding output surfaces. Image transport layers may be provided with hemispherical shapes and other shapes having output surfaces of compound curvature. A folding device may have first and second displays that are overlapped by respective first and second image transport layers that join over a hinge to block the hinge from view. A wristwatch device may have links or other structures with an image transport layer.

Abstract: An electronic device may have a display layer for displaying images. An optical coupling layer having an input surface that receives light from the display panel may convey the light from the input surface to an output surface. The output surface may have different dimensions than the display layer and may have any desired shape. To account for the displacement of light between the active area and the outer surface of the optical coupling layer and to ensure the output image is perceived with the desired distortion, image data may be rendered for the output surface then modified to account for the distortion and displacement that will occur later when the image is transported by the optical coupling layer from the display active area to the output surface of the optical coupling layer. Image distortion control circuitry may modify the rendered image data based on a distortion map.

Abstract: Conductive traces may be conformally wrapped around the side of a display panel that includes an array of display pixels. The conductive traces may electrically connect contacts on an upper surface of the display panel to corresponding contacts on a flexible printed circuit that is attached to a lower surface of the display panel. The side-wrapped conductive traces may be interposed between first and second insulating layers. The flexible printed circuit may have a multi-step interface that is electrically connected to the side-wrapped conductive traces. A system-in-package including a display driver integrated circuit may be mounted to the flexible printed circuit. The system-in-package may include a plurality of redistribution layers that electrically connect contacts on the display driver integrated circuit to contacts on the flexible printed circuit.

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 with bent edge portions protruding from a central region. Gaps may be formed between regions of pixels on a common display substrate or between separate display substrates. A light source may emit light through a gap. Optical components such as sensors may be aligned with windows in the display. The windows may be formed from transparent portions of a display layer that are surrounded by pixels. A frame may be used to support the flexible substrate. The frame may have a metal portion and a polymer portion molded to the metal portion. Openings and other structures in the frame may accommodate components such as optical sensors. Components may be aligned with frame openings and display windows.

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 with bent edge portions protruding from a central region. Gaps may be formed between regions of pixels on a common display substrate or between separate display substrates. A light source may emit light through a gap. Optical components such as sensors may be aligned with windows in the display. The windows may be formed from transparent portions of a display layer that are surrounded by pixels. A frame may be used to support the flexible substrate. The frame may have a metal portion and a polymer portion molded to the metal portion. Openings and other structures in the frame may accommodate components such as optical sensors. Components may be aligned with frame openings and display windows.

Abstract: An electronic device may have a display with pixels configured to display an image. The pixels may be overlapped by a cover layer. The display may have peripheral edges with curved cross-sectional profiles. An inactive area in the display may be formed along a peripheral edge of the display or may be surrounded by the pixels. Electrical components such as optical components may be located in the inactive area. An image transport layer may be formed from a coherent fiber bundle or Anderson localization material. The image transport layer may overlap the pixels, may have an opening that overlaps portions of the inactive area, may have an output surface that overlap portions of the inactive area, and/or may convey light associated with optical components in the electronic device.

Abstract: An electronic device may have a display with pixels configured to display an image. The pixels may be overlapped by a cover layer. The display may have peripheral edges with curved cross-sectional profiles. An inactive area in the display may be formed along a peripheral edge of the display or may be surrounded by the pixels. Electrical components such as optical components may be located in the inactive area. An image transport layer may be formed from a coherent fiber bundle or Anderson localization material. The image transport layer may overlap the pixels, may have an opening that overlaps portions of the inactive area, may have an output surface that overlap portions of the inactive area, and/or may convey light associated with optical components in the electronic device.

Abstract: An electronic device may have a display that displays an image. The image may be viewed through a display cover layer that overlaps the display. The display cover layer may include an optical coupling layer such as a coherent fiber bundle. A pixel expansion layer such as a diffractive layer may be incorporated between the optical coupling layer and a protective layer. The diffractive layer may create duplicate pixels to occupy otherwise non-light-emitting areas on the output surface of the display cover layer. The diffractive layer may also create duplicate pixels that overlap adjacent pixels to allow for brightness averaging. An adhesive layer or the protective layer may be used to form diffractive elements for the diffractive layer. An adhesive layer having a high index of refraction may be interposed between the optical coupling layer and the display panel to mitigate undesired reflections of ambient light.