Abstract: The present disclosure provides a phase shifting device and a base station antenna. The phase shifting device comprises a driving module, a transmission rack plate, and a plurality of annular phase shifters. The driving module comprises a transmission rod. The transmission rack plate comprises a transmission nut, through which the transmission rack plate is pivotally connected to the transmission rod of the driving module. The plurality of annular phase shifters are disposed on the periphery of the transmission rack plate at intervals and are respectively engaged with the transmission rack plate. The rotation of the transmission rod drives the transmission nut to move back and forth on the transmission rod, and along with the back and forth movement of the transmission nut, the transmission rack plate drives the plurality of annular phase shifters to rotate.

Abstract: A PIN creation method includes sending, by a user equipment, networking request information to a PIN server, where the networking request information is used to request to create a PIN; and receiving, by the user equipment, networking response information from the PIN server. The networking response information includes creation success information or creation failure information, the creation success information indicates that the PIN is successfully created, and the creation failure information indicates that the PIN fails to be created.

Abstract: Disclosed is a base station antenna, which includes a substrate and an antenna sub-array. The antenna sub-array includes a feeding plate, a plurality of radiation units, and two metal baffles. The feeding plate is disposed on the substrate. The plurality of radiation units are disposed on the feeding plate along a first direction and electrically connected to the feeding plate. The two metal baffles are respectively disposed on two sides of the feeding plate along a second direction perpendicular to the first direction, and each metal baffle extends along the first direction. Each metal baffle is provided with an opening slot, and the length of the opening slot along the first direction corresponds to a wavelength of a center frequency of the base station antenna. Therefore, the base station antenna can achieve the technical effects of converging the horizontal beam width and optimizing the cross polarization ratio.

Abstract: A dispatching method for an electric-hydrogen energy system considering flexible hydrogen demand includes establishing an electric load flexibility equation, a power purchase and sale constraint equation, a renewable energy output constraint equation, a hydrogen load flexibility equation, an electricity-to-hydrogen production safety operation constraint equation and an electric power balance constraint equation, establishing an electric-hydrogen energy system dispatching model with the lowest operating cost of the electric-hydrogen energy system within the dispatching cycle as an objective function, and solving the electric-hydrogen energy system dispatching model to obtain an optimal dispatching result. As compared with the prior art, the present invention can effectively solve the problem of coordination between electric and hydrogen energy flows, while taking into account the flexibility of electric and hydrogen loads, further providing additional flexibility to the operation of the system.

Abstract: The present disclosure discloses a display substrate, a control method thereof and a display device, and relates to the field of display technologies. The display substrate includes: a first substrate, a second substrate, a liquid crystal layer, a plurality of pixel electrodes, and a plurality of light-emitting elements. The plurality of pixel electrodes and the plurality of light-emitting elements are both disposed on a side, proximal to the liquid crystal layer, of the first substrate. When external ambient light is weak, the plurality of light-emitting elements in the display substrate may supply auxiliary light sources to the display substrate, such that the display substrate normally emits light to ensure a display effect.

Abstract: An apparatus for continuous preparation of carbon nanotubes, based on a fluidized bed reactor. The fluidized bed reactor comprises an annular varying diameter zone, a raw material gas inlet, a catalyst feeding port, a protective gas inlet, and a pulse gas controller. The annular varying diameter zone is located at a zone from a ¼ position starting from the bottom to the top. The pulse gas controller is disposed at the arc-shaped top portion of the annular varying diameter zone. The catalyst feeding port is located at the top of the fluidized bed reactor. The raw material gas inlet and the protective gas inlet are located at the bottom of the fluidized bed reactor. The device is also provided with a product outlet and a tail gas outlet.

Abstract: A method of continuously producing carbon nanotubes and hydrogencomprising: preparing a catalyst precursor, and pre-reducing the catalyst precursor; adding a height of carbon nanotubes in a reactor as a stacked bed and electrically heating the carbon nanotubes to the reaction temperature of a vapor deposition furnace in the presence of a protective gas; putting the pre-reduced catalyst or unreduced catalyst precursor into the reactor; under the condition of stirring the solid materials in the reactor, introducing a carbon source gas, reacting same by means of the vapor deposition furnace to generate new carbon nanotubes and hydrogen, continuously discharging a part of carbon nanotubes and a part of hydrogen, and repeating these steps to achieve the continuous preparation of carbon nanotubes. The device has a high utilization rate of raw materials, can manufacture a large batch of carbon nanotubes with a high purity at one time, and is suitable for large-scale industrial production.

Abstract: A dispatching method for an electric-hydrogen energy system considering flexible hydrogen demand includes establishing an electric load flexibility equation, a power purchase and sale constraint equation, a renewable energy output constraint equation, a hydrogen load flexibility equation, an electricity-to-hydrogen production safety operation constraint equation and an electric power balance constraint equation, establishing an electric-hydrogen energy system dispatching model with the lowest operating cost of the electric-hydrogen energy system within the dispatching cycle as an objective function, and solving the electric-hydrogen energy system dispatching model to obtain an optimal dispatching result. As compared with the prior art, the present invention can effectively solve the problem of coordination between electric and hydrogen energy flows, while taking into account the flexibility of electric and hydrogen loads, further providing additional flexibility to the operation of the system.

Abstract: A display module and an electronic device are provided, the display module including: an upper substrate including a first electrode provided on the substrate, and a plurality of projections provided on a first surface of the upper substrate and arranged in a matrix; a lower substrate including a second electrode provided on the lower substrate, and a plurality of grooves provided on a first surface of the lower substrate; and an inverted emulsion. The first surface of the upper substrate is on the first surface of the lower substrate, each projection matches a groove corresponding thereto to form an accommodating space, and the inverted emulsion is filled in the accommodating space.

Abstract: The present disclosure relates to the field of LED display technologies, and provides an LED chip, an LED light emitting substrate, a display device and a control method thereof. Specifically, the LED chip comprises: an N-type semiconductor layer, a P-type semiconductor layer, as well as a quantum well layer between the N-type semiconductor layer and the P-type semiconductor layer. The quantum well layer is made of indium gallium nitride, wherein indium atoms have a molar ratio of greater than or equal to 0.3 in the indium gallium nitride.

Abstract: The present disclosure belongs to the field of display technology, and particularly relates to a 3D display panel, a method for driving the same and a display apparatus. The 3D display panel is divided into a plurality of pixel regions and comprises a light emitting unit, and the light emitting unit includes a plurality of light emitting devices arranged in the plurality of pixel regions. The plurality of light emitting devices are configured to form a barrier pattern of alternating bright and dark bands during display of the 3D display panel.

Abstract: A thin film transistor and a manufacturing method thereof, an array substrate and a manufacturing method thereof, and a display panel are provided. The thin film transistor includes an active layer and a wire grid which is disposed at least on a surface of an active region of the active layer and is made of a conductive material. The active layer includes a source region, a drain region, and the channel region between the source region and the drain region. The wire grid includes a plurality of wire grid sections which are spaced apart from each other, and in a direction from the source region to the drain region, a length of the channel region is longer than a length of the wire grid section.

Abstract: A display system and a display control method of the display system are provided. The display system includes a display device, at least two layers of liquid crystal cells on a light-emitting side of the display device, and a controller device. The display device is configured to display a display picture; the at least two lavers of liquid crystal cells are configured to control an exit angle of light of the display picture; the controller device is configured to control positions and/or widths of light-transmitting regions and light-shielding regions of each layer of the liquid crystal cells to control a display mode of the display picture. The display system can control the positions and widths of the light-transmitting regions and the light-shielding regions formed on each liquid crystal cell according to actual needs, thereby realizing switching among various display modes.

Abstract: An anti-peeping device, an anti-peeping method thereof and a display device are disclosed. The anti-peeping device comprises: an upper substrate and a lower substrate which are arranged opposite to each other, and an electrophoresis layer filled between the upper substrate and the lower substrate; an electrode layer is arranged on a side, facing the electrophoresis layer, of at least one of the upper substrate and the lower substrate; the electrode layer includes a plurality of first sub-electrodes distributed along a first direction; and the electrophoresis layer includes charged particles with an electric property opposite to that of the first sub-electrodes to absorb light rays.

Abstract: An apparatus for continuous preparation of carbon nanotubes, based on a fluidized bed reactor. The fluidized bed reactor comprises an annular varying diameter zone, a raw material gas inlet, a catalyst feeding port, a protective gas inlet, and a pulse gas controller. The annular varying diameter zone is located at a zone from a ¼ position starting from the bottom to the top. The pulse gas controller is disposed at the arc-shaped top portion of the annular varying diameter zone. The catalyst feeding port is located at the top of the fluidized bed reactor. The raw material gas inlet and the protective gas inlet are located at the bottom of the fluidized bed reactor. The device is also provided with a product outlet and a tail gas outlet.

Abstract: A three-dimensional display system includes: an LED array and a light control layer disposed on a base substrate; wherein the LED array is used to form polarized lights of different polarization directions; the light control layer is used to control a light emission order of the polarized lights of different polarization directions.

Abstract: The present application discloses a peep-proof apparatus for switching a viewing angle of a display panel between a first viewing angle and a second viewing angle. The peep-proof apparatus includes a base substrate; a first liquid crystal layer on the base substrate; a second liquid crystal layer on a side of the first liquid crystal layer distal to the base substrate; a first controller configured to control the first liquid crystal layer to switch between being light transmissive and being light blocking in a plurality of first regions spaced apart from each other while other regions in the first liquid crystal layer being light transmissive; and a second controller configured to control the second liquid crystal layer to switch between being light transmissive and being light blocking in a plurality of second regions spaced apart from each other while other regions in the second liquid crystal layer being light transmissive.

Abstract: The present application discloses a peep-proof apparatus for switching a viewing angle of a display panel between a first viewing angle and a second viewing angle. The peep-proof apparatus includes a base substrate; a first liquid crystal layer on the base substrate; a second liquid crystal layer on a side of the first liquid crystal layer distal to the base substrate; a first controller configured to control the first liquid crystal layer to switch between being light transmissive and being light blocking in a plurality of first regions spaced apart from each other while other regions in the first liquid crystal layer being light transmissive; and a second controller configured to control the second liquid crystal layer to switch between being light transmissive and being light blocking in a plurality of second regions spaced apart from each other while other regions in the second liquid crystal layer being light transmissive.

Abstract: The present disclosure belongs to the field of display technology, and particularly relates to a 3D display panel, a method for driving the same and a display apparatus. The 3D display panel is divided into a plurality of pixel regions and comprises a light emitting unit, and the light emitting unit includes a plurality of light emitting devices arranged in the plurality of pixel regions. The plurality of light emitting devices are configured to form a barrier pattern of alternating bright and dark bands during display of the 3D display panel.

Abstract: A three-dimensional display system includes: an LED array and a light control layer disposed on a base substrate; wherein the LED array is used to form polarized lights of different polarization directions; the light control layer is used to control a light emission order of the polarized lights of different polarization directions.