Abstract: An oscillation frequency control method and system and a display device are provided. The oscillation frequency control system (3) is for a display device including a communication component (2) and a display driver component (1). The display driver component (3) includes at least one oscillator. The oscillation frequency control system (3) includes: an acquisition component (31) configured to acquire current operating information of the communication component (2); a determination component (32) configured to determine an oscillation operating frequency corresponding to each oscillator according to the current operating information; and a control component (33) configured to control each oscillator to operate at a corresponding oscillation operating frequency, wherein a frequency of a harmonic wave generated when each oscillator operates at the corresponding oscillation operating frequency falls outside a communication operating frequency band in which the communication component (2) currently operates.

Abstract: A method for adjusting a gamma voltage of a display module is provided. The method includes: obtaining a gamma voltage of the display module at a basic refresh frequency; obtaining an associated relationship between the gamma voltage of the display module at the basic refresh frequency and a gamma voltage of the display module at a target refresh frequency; and determining the gamma voltage of the display module at the target refresh frequency based on the gamma voltage of the display module at the basic refresh frequency and the associated relationship.

Abstract: A display module, including: a protective cover, a flexible display panel, and a metal heat-dissipation layer. The protective cover includes a main body portion in the shape of a circular plate and a bending portion distributed around the main body portion. The bending portion is fixedly connected to an edge of the main body portion. A light-exit side of the flexible display panel is attached to the protective cover. An orthographic projection of an edge portion of the flexible display panel on the protective cover is within the bending portion. The metal heat-dissipation layer is attached to a side, going away from the protective cover, of the flexible display panel. An orthographic projection of an edge portion of the metal heat-dissipation layer on the protective cover is within the bending portion. The edge portion of the metal heat-dissipation layer has a plurality of hollowed-out grooves arranged in arrays.

Abstract: Provided is a display module. The display module includes a protective cover plate and a flexible display panel. The protective cover plate includes a body portion in a shape of a circular plate and a bent portion disposed around the body portion, the bent portion being fixedly connected to an edge of the body portion; and a light exit side of the flexible display panel faces the protective cover plate, and the flexible display panel includes a first panel portion attached to the body portion and a second panel portion disposed around the first panel portion, an orthographic projection of the second panel portion on the protective cover plate being within the bent portion.

Abstract: The present disclosure relates to a flexible printed circuit board comprising a first region extending along a first direction, wherein the first region comprises a binding area and a track area arranged adjacent to each other along the first direction, at least one side of the binding area is provided with a conductive functional area along a second direction, the conductive functional area is electrically connected to a grounding wire in the track area for grounding, and the second direction is arranged at an angle to the first direction; the flexible printed circuit board comprises a substrate layer, and the conductive functional area comprises two conductive layers located on at least one side of the substrate layer, and the two conductive layers are electrically connected with each other through a via hole. The present disclosure also relates to a display module and a display device.

Abstract: A display apparatus is provided. The display apparatus includes a display panel; a main printed circuit configured to be electrically connected to an array of subpixels in the display panel; a touch control structure on the display panel; and a touch printed circuit configured to be electrically connected to touch electrodes in the touch control structure. The display apparatus includes a slot defining a cavity configured to receive at least a first portion of the touch printed circuit. A thickness of the touch printed circuit is less than or equal to a depth of the slot.

Abstract: A method for adjusting a gamma voltage of a display module is provided. The method includes: obtaining a gamma voltage of the display module at a basic refresh frequency; obtaining an associated relationship between the gamma voltage of the display module at the basic refresh frequency and a gamma voltage of the display module at a target refresh frequency; and determining the gamma voltage of the display module at the target refresh frequency based on the gamma voltage of the display module at the basic refresh frequency and the associated relationship.

Abstract: Provided is a method for driving a display module. The method includes: generating a frame reference signal in response to a display instruction; transmitting a light emission control signal to a plurality of pixels in the display screen based on the frame reference signal, wherein the light emission control signal at a first level is configured to control the plurality of pixels to emit light, and the light emission control signal at a second level is configured to control the plurality of pixels not to emit light; and transmitting a turn-on signal to the sensor based on the frame reference signal, wherein the turn-on signal is configured to control the sensor to collect the target parameter, and the turn-on signal is not overlapped with a period when the light emission control signal is at the first level.

Abstract: A display module includes a display panel having a fingerprint identification area and a light-transmitting protective film located on a back surface of the display panel. The light-transmitting protective film includes a protective layer, a light-shielding pattern located on a side of the protective layer, and a light-transmitting adhesive layer located on a side of the light-shielding pattern away from the protective layer. The protective layer has a target area. At least the target area is a light-transmitting area, and the target area at least partially overlaps with the fingerprint identification area. The light-shielding pattern defines a plurality of imaging apertures, the plurality of imaging apertures are arranged at intervals, and orthogonal projection of the plurality of imaging apertures on the protective layer are at least located in the target area. A surface of the light-transmitting adhesive layer away from the light-shielding pattern is in contact with the display panel.

Abstract: The present disclosure provides a display panel and a manufacturing method therefor, and the display device. The display panel comprises a display area and a binding area, the binding area comprises a bending area and a composite circuit area which are sequentially arranged in a direction away from the display area, and the bending area is configured to turn the composite circuit area to the back of the display area by bending; a first functional hole is formed in the display area, a second functional hole is formed in the binding area, and the orthographic projection of the first functional hole on the plane of the display area at least partially overlaps the orthographic projection of the second functional hole on the plane of the display area.

Abstract: A display apparatus is provided. The display apparatus includes a display panel; a main printed circuit configured to be electrically connected to an array of subpixels in the display panel; a touch control structure on the display panel; and a touch printed circuit configured to be electrically connected to touch electrodes in the touch control structure. The display apparatus includes a slot defining a cavity configured to receive at least a first portion of the touch printed circuit. A thickness of the touch printed circuit is less than or equal to a depth of the slot.

Abstract: Disclosed are a foldable screen and a display device. The foldable screen includes: a flexible display panel and a plurality of elastic portions, wherein each of the elastic portions includes each of elastic support members and two connecting rods fixedly connected to each of the elastic support members; wherein the two connecting rods are respectively connected to two flat portions of the flexible display panel, and the elastic support members are configured to supply a support force to the foldable portion in the case that a display surface of the foldable portion of the flexible display panel is coplanar with those of the flat portions.

Abstract: A bracket for a flexible display module is provided. The flexible display module includes a flexible display panel and a transparent cover plate. The flexible display panel includes a display region, a binding region opposite to the display region and a bending region connecting the display region and the binding region. The transparent cover plate is fixed to the display region of the flexible display panel. The bracket includes a first body and a second body fixedly connected with each other. An inner surface of the first body is provided with an accommodating region for accommodating the bending region of the flexible display panel. The second body is fixedly and detachably connected to a back of the flexible display panel.

Abstract: A rotational speed sensor, a manufacturing method thereof, a driving method thereof, and an electronic device are provided. The rotational speed sensor includes liquid crystal cell, rotational speed sensing module and rotational speed determining module; rotational speed sensing module is configured to convert rotational speed into voltage signal and apply voltage signal to liquid crystal cell; and at least a part of optical signal propagation module of rotational speed determining module is located in liquid crystal cell.

Abstract: A halogen-free flame retardant thermoplastic polyurethane elastomer composition and product and flame retardant package thereof comprised thermoplastic polyurethane and halogen-free flame retardant package. The halogen-free flame retardant comprises inorganic phosphorus-based flame retardant and can further comprise expandable graphite, melamine or derivatives thereof and organic phosphorus-based flame retardant. The composition is environmentally friendly and safe, the comprehensive mechanical properties thereof are excellent, does not drip during the burning test, passed UL94 with rating of V0?1.5 mm, and the limiting oxygen index thereof can be up to 35%.

Abstract: This disclosure discloses a light-emitting diode chip, a method for fabricating the same, a backlight module, and a display device. The light-emitting diode chip includes: a transparent base substrate; at least one light-emitting diode located on one side of the base substrate; and a dimming structure located on a side of the base substrate away from the light-emitting diode, wherein the light-emitting diode is configured to emit light from double sides thereof; and the dimming structure is configured to adjust the intensity of light emitted from the side of the base substrate away from the light-emitting diode.

Abstract: A bracket for a flexible display module is provided. The flexible display module includes a flexible display panel and a transparent cover plate. The flexible display panel includes a display region, a binding region opposite to the display region and a bending region connecting the display region and the binding region. The transparent cover plate is fixed to the display region of the flexible display panel. The bracket includes a first body and a second body fixedly connected with each other. An inner surface of the first body is provided with an accommodating region for accommodating the bending region of the flexible display panel. The second body is fixedly and detachably connected to a back of the flexible display panel.

Abstract: Disclosed are a foldable screen and a display device. The foldable screen includes: a flexible display panel and a plurality of elastic portions, wherein each of the elastic portions includes each of elastic support members and two connecting rods fixedly connected to each of the elastic support members; wherein the two connecting rods are respectively connected to two flat portions of the flexible display panel, and the elastic support members are configured to supply a support force to the foldable portion in the case that a display surface of the foldable portion of the flexible display panel is coplanar with those of the flat portions.

Abstract: A fiber optic sensor, a manufacturing method thereof and a motion sensing device relating to the field of sensors are provided. The fiber optic sensor includes a bushing, a magnetic mass block and a sensing optical fiber. The magnetic mass block is located in the bushing, and a magnetic fluid is adsorbed onto an outer surface, opposite to an inner wall of the bushing, of the magnetic mass block, such that the magnetic mass block is capable of being suspended in the bushing and moving along an axis of the bushing. One end of the sensing optical fiber is in a first end opening of the bushing. A surface, opposite to the sensing optical fiber, of the magnetic mass block is a reflecting surface. The sensing optical fiber is configured to provide incident light for the reflecting surface and to receive measuring light from the reflecting surface.

Abstract: A finger exoskeleton robot includes a support plate, at least one finger mechanism, and a temperature control system. Each of the finger mechanisms includes a plurality of finger sleeves and joint drivers. The sleeves of the finger mechanism are sequentially arranged at a distance and configured to be correspondingly worn on a plurality of knuckles of the user's fingers. Every two finger sleeves adjacent to each other of the finger mechanism are connected by one joint driver. The support plate and one of the finger sleeves closest to the support plate are connected by one joint driver. The joint driver is switched between a flat state and a curved state when the temperature of the joint drivers is higher than or lower than a phase change temperature value. A temperature control system is electrically connected to the respective joint drives and respectively controls the temperature of the joint drivers.