In a method for dust removal in a rollable display device, a control module activates rolling mechanisms and a dust removal mechanism of the rollable display device. The control module determines a first amount of dust particles on a display surface of the rollable display device using data from a dust detection mechanisms. When the first amount of dust particles is determined to exceed a threshold, the control module engages magnetic locks to lock the rolling mechanisms, and the dust removal mechanism continues to remove the dust from the display surface. The control module determines a second amount of dust particles on the display surface. When the second amount of dust particles is determined to fall below the threshold, the control module disengages the magnetic locks to release the rolling mechanisms. Dust removal mechanism may include piezoelectric strips or an ultrasound haptic effect generation module.

In a method for dust removal in a rollable display device, a control module activates rolling mechanisms and a dust removal mechanism of the rollable display device. The control module determines a first amount of dust particles on a display surface of the rollable display device using data from a dust detection mechanisms. When the first amount of dust particles is determined to exceed a threshold, the control module engages magnetic locks to lock the rolling mechanisms, and the dust removal mechanism continues to remove the dust from the display surface. The control module determines a second amount of dust particles on the display surface. When the second amount of dust particles is determined to fall below the threshold, the control module disengages the magnetic locks to release the rolling mechanisms. Dust removal mechanism may include piezoelectric strips or an ultrasound haptic effect generation module.

A structural element fixing structure is provided. A flange of a first fixing element is connected with a side surface of a first shaft of the first fixing element. A first structure is fixed on the first fixing element. A second fixing element clamps the flange. An accommodating portion of the second fixing element is connected with a groove portion of the second fixing element. The accommodating portion has an accommodating space configured to accommodate the flange. A second shaft of the second fixing element is connected with the accommodating portion and is on a side of the accommodating portion facing away from the groove portion. A second structure is fixed on the second shaft of the second fixing element. The second fixing element separates the second structure and the first fixing element.

A charger for attachment to a mobile device. A housing with a device side surface contains a wireless charger including at least one coil. A first arrangement of magnetic material has a first region exposing a first polarity magnetic field at the device side surface and a second immediately adjacent region exposing an opposite polarity magnetic field at the device side surface. In use, the arrangement magnetically couples the housing to a mobile device and causes the housing to adopt a specific axial orientation on the mobile device thereby assuring substantial axial alignment of the at least one coil with a corresponding coil associated with the mobile device.

The present subject matter discloses a display device having a stand mounting wall in an outer covering of the display device. The display device may further include a stand receptacle within the stand mounting wall. The stand receptacle having receptacle walls partially protruding from the stand mounting wall of the outer covering. Each of the receptacle walls may include a first end along an outer surface of the stand mounting wall. The first ends of the receptacle walls forming a first opening of the stand receptacle. Each of the receptacle walls may further include a second end forming a second opening of the stand receptacle. The display device may further include a receptacle covering movably disposed within the stand receptacle to conceal the first opening of stand receptacle.

A mounting base structure used for a photographic lamp or monitor comprises a first connecting rod having an end rotatably connected with one side of a photographic lamp or monitor and an end provided with a connecting part. A second connecting rod to be attached to the first connecting rod is hinged to the connecting part. A first threaded hole to be connected with a connecting bolt on a digital video camera is horizontally formed in the side face of the other end of the second connecting rod. The mounting base structure used for the photographic lamp or monitor is simple and compact and facilitates the connection of the photographic lamp or monitor with the digital video camera.

A mobile device accessory comprising a base that affixes to a mobile device, and a rotating element, such as a rotary ball-bearing disc, coupled to said base allowing for the device to spin along the axis of the rotating element. The accessory may further comprise hinged or extendable arms. The accessory may further comprise a power source or motor for rotating the accessory. The accessory may further comprise a control circuit coupled to a software application capable of controlling the rotation of the spinning element.

An articulating sensor bracket assembly including a first member having a body with a first end defining a ball arrangement and a second end defining an elongated section and a bracket pivotally connected to the elongated section of the first member at a pivot point. The bracket includes a locking member located adjacent to the pivot point. The locking member is configured for selectively preventing a movement of the bracket relative to the first member. The bracket further includes at least one mounting point. Each mounting point is configured for mounting a sensor.

A foldable electronic device including a first body having a first side and a second side, a second body rotatably connected to the first side of the first body, at least one sliding structure disposed in the first body and adjacent to the second side, a first screen rotatably connected to the second body and movably disposed at the at least one sliding structure, at least one hinge structure disposed in the first body and connected to the at least one sliding structure, and a second screen disposed at the at least one hinge structure and located at the second side is provided. The second body is adapted to rotate relative to the first body and driving the first screen to move along the at least one sliding structure to switch to a closed state or an unfolding state.

A grip and support accessory for attachment to a mobile phone or other electronic device is provided. The accessory assists a user in maintaining a grip on a handheld device and may also be used as a stand to support the handheld device in a vertical or horizontal viewing orientation for hands-free viewing. The accessory includes a base configured for attachment to the handheld device, a grip movably attached to the base, and an arm operably attached to the base and the grip, where the arm is operable to move the grip from a closed position to multiple extended positions.