Provided is a display device including: a backlight module; a first display panel disposed on the backlight module and including a first polarizer; and a second display panel disposed on the backlight module and including a second polarizer, wherein the first polarizer has a first projection, the second polarizer has a second projection, and an area of an overlap between the first projection and the second projection accounts for 10% or less of an area of the second projection, wherein the first display panel comprises a non-display area, and the second display panel corresponds in position to the non-display area.

One embodiment of the present disclosure is directed to a wearable electronic device. The wearable electronic device includes an enclosure having a sidewall with a button aperture defined therethrough, a display connected to the enclosure, and a processing element in communication with the display. The device also includes a sensing element in communication with the processing element and an input button at least partially received within the button aperture and in communication with the sensing element, the input button configured to receive two types of user inputs. During operation, the sensing element tracks movement of the input button to determine the two types of user inputs.

One embodiment of the present disclosure is directed to a wearable electronic device. The wearable electronic device includes an enclosure having a sidewall with a button aperture defined therethrough, a display connected to the enclosure, and a processing element in communication with the display. The device also includes a sensing element in communication with the processing element and an input button at least partially received within the button aperture and in communication with the sensing element, the input button configured to receive two types of user inputs. During operation, the sensing element tracks movement of the input button to determine the two types of user inputs.

Disclosed are a magnetic roller damping device and an implementing method thereof. The device includes a magnetic roller and a magnetic damping mechanism. The magnetic roller includes a first multipole magnet that includes at least one pair of magnetic poles with opposite polarities. The magnetic damping mechanism uses a magnetic damping magnet or metal attractable to the first multipole magnet, the magnetic damping magnet or metal is positioned in a magnetic field of the first multipole magnet, and a distance between the magnetic damping magnet or metal and the magnetic roller is adjustable.

Disclosed are a magnetic roller damping device and an implementing method thereof. The device includes a magnetic roller and a magnetic damping mechanism. The magnetic roller includes a first multipole magnet that includes at least one pair of magnetic poles with opposite polarities. The magnetic damping mechanism uses a magnetic damping magnet or metal attractable to the first multipole magnet, the magnetic damping magnet or metal is positioned in a magnetic field of the first multipole magnet, and a distance between the magnetic damping magnet or metal and the magnetic roller is adjustable.

A computer input device includes a housing having an opening, a ball holder supported relative to the housing and being concentric with the opening, a ball positioned within the ball holder and extending through the opening in the housing, and a scroll ring concentric with and rotatable relative to the ball holder. The ball is movable relative to the ball holder. The ball holder has a track, and the scroll ring has at least one projection received in the track of the ball holder to guide the scroll ring.

A computer input device includes a housing having an opening, a ball holder supported relative to the housing and being concentric with the opening, a ball positioned within the ball holder and extending through the opening in the housing, and a scroll ring concentric with and rotatable relative to the ball holder. The ball is movable relative to the ball holder. The ball holder has a track, and the scroll ring has at least one projection received in the track of the ball holder to guide the scroll ring.

A magnetorheological braking device with a fixed mount and with two braking components. One of the two braking components is non-rotatably affixed to the mount and the two braking components are continuously rotatable relative to one another. A first braking component extends in the axial direction. The second braking component has a hollow shell part that extends around the first braking component. A peripheral gap is filled with a magnetorheological medium. The first braking component has an electric coil and a core made from a magnetically conductive material. Magnetic field concentrators on the core and/or magnetic field concentrators on the shell part protrude into the gap, which results in a peripheral gap with a variable gap height. A magnetic field of the electric coil runs through the core and the magnetic field concentrators and through the gap into a wall of the shell part.

An exemplary embodiment of a circuit for determining information about the position, attitude, or orientation of a magnet comprises an input interface configured to receive components of a magnetic field produced by the magnet. An evaluation logic unit corresponds to at least one trained neural network and is configured to determine the information about the position, attitude, or orientation of the magnet on the basis of the received components.

A reluctance haptic engine for an electronic device includes a core, an attractor plate, and mechanical suspension. The core and/or the attractor plate may be coupled to an input structure, such as a button cap, a trackpad cover, or a touchscreen cover. In an unactuated configuration, flexible support members maintain a gap between the core and the attractor plate. An electrical current may be applied to one or more conduction loops of the core to actuate the reluctance haptic engine and provide a haptic output by moving the input structure. The electrical current may cause a magnetic flux that results in a reluctance force that pulls the attractor and the core together and causes the input structure to move to produce a haptic output.